diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index 6fb9a4d..b37a457 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -1195,6 +1195,11 @@
     bool traceStream = false;
     bool onlyUserspace = false;
 
+    fprintf(stderr,
+            "** Warning: atrace will end vendor support in the next Android Release. **\n"
+            "** Perfetto is the suggested replacement tool. It will gain vendor      **\n"
+            "** support. See https://perfetto.dev/docs/quickstart/android-tracing    **\n\n");
+
     if (argc == 2 && 0 == strcmp(argv[1], "--help")) {
         showHelp(argv[0]);
         exit(0);
diff --git a/cmds/dumpstate/DumpstateInternal.cpp b/cmds/dumpstate/DumpstateInternal.cpp
index 3091f6b..6f7fea3 100644
--- a/cmds/dumpstate/DumpstateInternal.cpp
+++ b/cmds/dumpstate/DumpstateInternal.cpp
@@ -162,17 +162,16 @@
         return 0;
     }
     bool newline = false;
+    int poll_timeout_ms = 30 * 1000;
     while (true) {
-        uint64_t start_time = Nanotime();
         pollfd fds[] = { { .fd = fd, .events = POLLIN } };
-        int ret = TEMP_FAILURE_RETRY(poll(fds, arraysize(fds), 30 * 1000));
+        int ret = TEMP_FAILURE_RETRY(poll(fds, arraysize(fds), poll_timeout_ms));
         if (ret == -1) {
             dprintf(out_fd, "*** %s: poll failed: %s\n", path, strerror(errno));
             newline = true;
             break;
-        } else if (ret == 0) {
-            uint64_t elapsed = Nanotime() - start_time;
-            dprintf(out_fd, "*** %s: Timed out after %.3fs\n", path, (float)elapsed / NANOS_PER_SEC);
+        } else if (ret == 0 && poll_timeout_ms != 0) {
+            dprintf(out_fd, "*** %s: Timed out after %ds\n", path, poll_timeout_ms / 1000 );
             newline = true;
             break;
         } else {
@@ -189,6 +188,7 @@
                 break;
             }
         }
+        poll_timeout_ms = 0;
     }
 
     if (!newline) dprintf(out_fd, "\n");
diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp
index 942a17e..f759674 100644
--- a/cmds/dumpstate/dumpstate.cpp
+++ b/cmds/dumpstate/dumpstate.cpp
@@ -15,6 +15,7 @@
  */
 
 #define LOG_TAG "dumpstate"
+#define ATRACE_TAG ATRACE_TAG_ALWAYS
 
 #include <dirent.h>
 #include <errno.h>
@@ -76,6 +77,7 @@
 #include <cutils/native_handle.h>
 #include <cutils/properties.h>
 #include <cutils/sockets.h>
+#include <cutils/trace.h>
 #include <debuggerd/client.h>
 #include <dumpsys.h>
 #include <dumputils/dump_utils.h>
@@ -3098,7 +3100,9 @@
     TEMP_FAILURE_RETRY(dup2(dup_stdout_fd, fileno(stdout)));
 
     // Zip the (now complete) .tmp file within the internal directory.
+    ATRACE_BEGIN("FinalizeFile");
     FinalizeFile();
+    ATRACE_END();
 
     // Share the final file with the caller if the user has consented or Shell is the caller.
     Dumpstate::RunStatus status = Dumpstate::RunStatus::OK;
@@ -3409,6 +3413,9 @@
         duration_fd_(duration_fd) {
     if (!title_.empty()) {
         started_ = Nanotime();
+        if (title_.find("SHOW MAP") == std::string::npos) {
+            ATRACE_ASYNC_BEGIN(title_.c_str(), 0);
+        }
     }
 }
 
@@ -3423,6 +3430,9 @@
             dprintf(duration_fd_, "------ %.3fs was the duration of '%s' ------\n",
                     elapsed, title_.c_str());
         }
+        if (title_.find("SHOW MAP") == std::string::npos) {
+            ATRACE_ASYNC_END(title_.c_str(), 0);
+        }
     }
 }
 
diff --git a/cmds/installd/utils.cpp b/cmds/installd/utils.cpp
index 45aeab6..4d9b710 100644
--- a/cmds/installd/utils.cpp
+++ b/cmds/installd/utils.cpp
@@ -1184,8 +1184,8 @@
 int wait_child_with_timeout(pid_t pid, int timeout_ms) {
     int pidfd = pidfd_open(pid, /*flags=*/0);
     if (pidfd < 0) {
-        PLOG(ERROR) << "pidfd_open failed for pid " << pid;
-        kill(pid, SIGKILL);
+        PLOG(ERROR) << "pidfd_open failed for pid " << pid
+                    << ", waiting for child process without timeout";
         return wait_child(pid);
     }
 
diff --git a/cmds/lshal/libprocpartition/Android.bp b/cmds/lshal/libprocpartition/Android.bp
index cbfbdc9..af85666 100644
--- a/cmds/lshal/libprocpartition/Android.bp
+++ b/cmds/lshal/libprocpartition/Android.bp
@@ -35,5 +35,6 @@
     ],
     export_include_dirs: [
         "include",
-    ]
+    ],
+    min_sdk_version: "30",
 }
diff --git a/cmds/servicemanager/main.cpp b/cmds/servicemanager/main.cpp
index 2fb9c2b..1d458b7 100644
--- a/cmds/servicemanager/main.cpp
+++ b/cmds/servicemanager/main.cpp
@@ -121,6 +121,8 @@
 
     const char* driver = argc == 2 ? argv[1] : "/dev/binder";
 
+    LOG(INFO) << "Starting sm instance on " << driver;
+
     sp<ProcessState> ps = ProcessState::initWithDriver(driver);
     ps->setThreadPoolMaxThreadCount(0);
     ps->setCallRestriction(ProcessState::CallRestriction::FATAL_IF_NOT_ONEWAY);
diff --git a/include/input/OWNERS b/include/input/OWNERS
new file mode 100644
index 0000000..c88bfe9
--- /dev/null
+++ b/include/input/OWNERS
@@ -0,0 +1 @@
+include platform/frameworks/base:/INPUT_OWNERS
diff --git a/include/input/PropertyMap.h b/include/input/PropertyMap.h
index 451918b..b1e3f85 100644
--- a/include/input/PropertyMap.h
+++ b/include/input/PropertyMap.h
@@ -18,10 +18,8 @@
 #define _UTILS_PROPERTY_MAP_H
 
 #include <android-base/result.h>
-#include <utils/Errors.h>
-#include <utils/KeyedVector.h>
-#include <utils/String8.h>
 #include <utils/Tokenizer.h>
+#include <unordered_map>
 
 namespace android {
 
@@ -58,30 +56,27 @@
     /* Adds a property.
      * Replaces the property with the same key if it is already present.
      */
-    void addProperty(const String8& key, const String8& value);
-
-    /* Returns true if the property map contains the specified key. */
-    bool hasProperty(const String8& key) const;
+    void addProperty(const std::string& key, const std::string& value);
 
     /* Gets the value of a property and parses it.
      * Returns true and sets outValue if the key was found and its value was parsed successfully.
      * Otherwise returns false and does not modify outValue.  (Also logs a warning.)
      */
-    bool tryGetProperty(const String8& key, String8& outValue) const;
-    bool tryGetProperty(const String8& key, bool& outValue) const;
-    bool tryGetProperty(const String8& key, int32_t& outValue) const;
-    bool tryGetProperty(const String8& key, float& outValue) const;
+    bool tryGetProperty(const std::string& key, std::string& outValue) const;
+    bool tryGetProperty(const std::string& key, bool& outValue) const;
+    bool tryGetProperty(const std::string& key, int32_t& outValue) const;
+    bool tryGetProperty(const std::string& key, float& outValue) const;
 
     /* Adds all values from the specified property map. */
     void addAll(const PropertyMap* map);
 
-    /* Gets the underlying property map. */
-    inline const KeyedVector<String8, String8>& getProperties() const { return mProperties; }
-
     /* Loads a property map from a file. */
     static android::base::Result<std::unique_ptr<PropertyMap>> load(const char* filename);
 
 private:
+    /* Returns true if the property map contains the specified key. */
+    bool hasProperty(const std::string& key) const;
+
     class Parser {
         PropertyMap* mMap;
         Tokenizer* mTokenizer;
@@ -95,11 +90,11 @@
         status_t parseType();
         status_t parseKey();
         status_t parseKeyProperty();
-        status_t parseModifier(const String8& token, int32_t* outMetaState);
+        status_t parseModifier(const std::string& token, int32_t* outMetaState);
         status_t parseCharacterLiteral(char16_t* outCharacter);
     };
 
-    KeyedVector<String8, String8> mProperties;
+    std::unordered_map<std::string, std::string> mProperties;
 };
 
 } // namespace android
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index f2395ba..5e9f540 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -60,27 +60,19 @@
 //
 // Currently, these are only on system android (not vendor, not host)
 // TODO(b/183654927) - move these into separate libraries
-libbinder_device_interface_sources = [
-    "IPermissionController.cpp",
-    "PermissionCache.cpp",
-    "PermissionController.cpp",
-]
 
-cc_library {
-    name: "libbinder",
+filegroup {
+    name: "libbinder_device_interface_sources",
+    srcs: [
+        "IPermissionController.cpp",
+        "PermissionCache.cpp",
+        "PermissionController.cpp",
+    ],
+}
 
-    version_script: "libbinder.map",
-
-    // for vndbinder
-    vendor_available: true,
-    vndk: {
-        enabled: true,
-    },
-    recovery_available: true,
-    double_loadable: true,
+cc_defaults {
+    name: "libbinder_defaults",
     host_supported: true,
-    // TODO(b/153609531): remove when no longer needed.
-    native_bridge_supported: true,
 
     // TODO(b/31559095): get headers from bionic on host
     include_dirs: [
@@ -88,72 +80,32 @@
         "bionic/libc/kernel/uapi/",
     ],
 
-    // libbinder does not offer a stable wire protocol.
-    // if a second copy of it is installed, then it may break after security
-    // or dessert updates. Instead, apex users should use libbinder_ndk.
-    apex_available: [
-        "//apex_available:platform",
-    ],
-
     srcs: [
         "Binder.cpp",
         "BpBinder.cpp",
-        "BufferedTextOutput.cpp",
         "Debug.cpp",
         "FdTrigger.cpp",
         "IInterface.cpp",
-        "IMemory.cpp",
-        "IPCThreadState.cpp",
         "IResultReceiver.cpp",
-        "IServiceManager.cpp",
-        "IShellCallback.cpp",
-        "LazyServiceRegistrar.cpp",
-        "MemoryBase.cpp",
-        "MemoryDealer.cpp",
-        "MemoryHeapBase.cpp",
+        "OS.cpp",
         "Parcel.cpp",
-        "ParcelableHolder.cpp",
         "ParcelFileDescriptor.cpp",
-        "PersistableBundle.cpp",
-        "ProcessState.cpp",
         "RpcSession.cpp",
         "RpcServer.cpp",
         "RpcState.cpp",
         "RpcTransportRaw.cpp",
-        "Static.cpp",
         "Stability.cpp",
         "Status.cpp",
         "TextOutput.cpp",
         "Utils.cpp",
-        ":libbinder_aidl",
     ],
 
     target: {
-        android: {
-            srcs: libbinder_device_interface_sources,
-
-            // NOT static to keep the wire protocol unfrozen
-            static: {
-                enabled: false,
-            },
-        },
-        vendor: {
-            exclude_srcs: libbinder_device_interface_sources,
-        },
-        darwin: {
-            enabled: false,
-        },
         host: {
             srcs: [
-                "ServiceManagerHost.cpp",
                 "UtilsHost.cpp",
             ],
         },
-        recovery: {
-            exclude_header_libs: [
-                "libandroid_runtime_vm_headers",
-            ],
-        },
     },
 
     aidl: {
@@ -161,7 +113,6 @@
     },
 
     cflags: [
-        "-Wall",
         "-Wextra",
         "-Wextra-semi",
         "-Werror",
@@ -224,10 +175,126 @@
         "performance*",
         "portability*",
     ],
+}
+
+cc_defaults {
+    name: "libbinder_kernel_defaults",
+    srcs: [
+        "BufferedTextOutput.cpp",
+        "IPCThreadState.cpp",
+        "IServiceManager.cpp",
+        "ProcessState.cpp",
+        "Static.cpp",
+        ":libbinder_aidl",
+        ":libbinder_device_interface_sources",
+    ],
+    target: {
+        vendor: {
+            exclude_srcs: [
+                ":libbinder_device_interface_sources",
+            ],
+        },
+        host: {
+            srcs: [
+                "ServiceManagerHost.cpp",
+            ],
+        },
+    },
+    cflags: [
+        "-DBINDER_WITH_KERNEL_IPC",
+    ],
+}
+
+cc_library {
+    name: "libbinder",
+    defaults: [
+        "libbinder_defaults",
+        "libbinder_kernel_defaults",
+    ],
+
+    version_script: "libbinder.map",
+
+    // for vndbinder
+    vendor_available: true,
+    vndk: {
+        enabled: true,
+    },
+    recovery_available: true,
+    double_loadable: true,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
+
+    // libbinder does not offer a stable wire protocol.
+    // if a second copy of it is installed, then it may break after security
+    // or dessert updates. Instead, apex users should use libbinder_ndk.
+    apex_available: [
+        "//apex_available:platform",
+    ],
+
+    srcs: [
+        "IMemory.cpp",
+        "IShellCallback.cpp",
+        "LazyServiceRegistrar.cpp",
+        "MemoryBase.cpp",
+        "MemoryDealer.cpp",
+        "MemoryHeapBase.cpp",
+        "ParcelableHolder.cpp",
+        "PersistableBundle.cpp",
+    ],
+
+    target: {
+        android: {
+            // NOT static to keep the wire protocol unfrozen
+            static: {
+                enabled: false,
+            },
+        },
+        darwin: {
+            enabled: false,
+        },
+        recovery: {
+            exclude_header_libs: [
+                "libandroid_runtime_vm_headers",
+            ],
+        },
+    },
 
     afdo: true,
 }
 
+cc_library_static {
+    name: "libbinder_rpc_no_kernel",
+    defaults: ["libbinder_defaults"],
+    visibility: [
+        ":__subpackages__",
+    ],
+}
+
+cc_library_static {
+    name: "libbinder_rpc_single_threaded",
+    defaults: [
+        "libbinder_defaults",
+        "libbinder_kernel_defaults",
+    ],
+    cflags: [
+        "-DBINDER_RPC_SINGLE_THREADED",
+    ],
+    visibility: [
+        ":__subpackages__",
+    ],
+}
+
+cc_library_static {
+    name: "libbinder_rpc_single_threaded_no_kernel",
+    defaults: ["libbinder_defaults"],
+    cflags: [
+        "-DBINDER_RPC_SINGLE_THREADED",
+    ],
+    visibility: [
+        ":__subpackages__",
+    ],
+}
+
 cc_defaults {
     name: "libbinder_tls_shared_deps",
     shared_libs: [
@@ -364,6 +431,7 @@
 
 cc_library {
     name: "libbatterystats_aidl",
+    host_supported: true,
     srcs: [
         "IBatteryStats.cpp",
     ],
@@ -376,6 +444,7 @@
 
 cc_library {
     name: "libprocessinfoservice_aidl",
+    host_supported: true,
     srcs: [
         "IProcessInfoService.cpp",
         "ProcessInfoService.cpp",
diff --git a/libs/binder/Binder.cpp b/libs/binder/Binder.cpp
index e2db1a3..532bacb 100644
--- a/libs/binder/Binder.cpp
+++ b/libs/binder/Binder.cpp
@@ -38,6 +38,7 @@
 #include <linux/sched.h>
 #endif
 
+#include "BuildFlags.h"
 #include "RpcState.h"
 
 namespace android {
@@ -164,6 +165,10 @@
         ALOGW("setRpcClientDebug disallowed because RPC is not enabled");
         return INVALID_OPERATION;
     }
+    if (!kEnableKernelIpc) {
+        ALOGW("setRpcClientDebug disallowed because kernel binder is not enabled");
+        return INVALID_OPERATION;
+    }
 
     BBinder* local = this->localBinder();
     if (local != nullptr) {
@@ -515,6 +520,10 @@
         ALOGW("%s: disallowed because RPC is not enabled", __PRETTY_FUNCTION__);
         return INVALID_OPERATION;
     }
+    if (!kEnableKernelIpc) {
+        ALOGW("setRpcClientDebug disallowed because kernel binder is not enabled");
+        return INVALID_OPERATION;
+    }
     uid_t uid = IPCThreadState::self()->getCallingUid();
     if (uid != AID_ROOT) {
         ALOGE("%s: not allowed because client %" PRIu32 " is not root", __PRETTY_FUNCTION__, uid);
@@ -540,6 +549,10 @@
         ALOGW("%s: disallowed because RPC is not enabled", __PRETTY_FUNCTION__);
         return INVALID_OPERATION;
     }
+    if (!kEnableKernelIpc) {
+        ALOGW("setRpcClientDebug disallowed because kernel binder is not enabled");
+        return INVALID_OPERATION;
+    }
 
     const int socketFdForPrint = socketFd.get();
     LOG_RPC_DETAIL("%s(fd=%d)", __PRETTY_FUNCTION__, socketFdForPrint);
@@ -635,13 +648,14 @@
             for (int i = 0; i < argc && data.dataAvail() > 0; i++) {
                args.add(data.readString16());
             }
-            sp<IShellCallback> shellCallback = IShellCallback::asInterface(
-                    data.readStrongBinder());
+            sp<IBinder> shellCallbackBinder = data.readStrongBinder();
             sp<IResultReceiver> resultReceiver = IResultReceiver::asInterface(
                     data.readStrongBinder());
 
             // XXX can't add virtuals until binaries are updated.
-            //return shellCommand(in, out, err, args, resultReceiver);
+            // sp<IShellCallback> shellCallback = IShellCallback::asInterface(
+            //        shellCallbackBinder);
+            // return shellCommand(in, out, err, args, resultReceiver);
             (void)in;
             (void)out;
             (void)err;
diff --git a/libs/binder/BpBinder.cpp b/libs/binder/BpBinder.cpp
index 1eb2ffd..82ebdd7 100644
--- a/libs/binder/BpBinder.cpp
+++ b/libs/binder/BpBinder.cpp
@@ -28,6 +28,8 @@
 
 #include <stdio.h>
 
+#include "BuildFlags.h"
+
 //#undef ALOGV
 //#define ALOGV(...) fprintf(stderr, __VA_ARGS__)
 
@@ -115,6 +117,11 @@
 // ---------------------------------------------------------------------------
 
 sp<BpBinder> BpBinder::create(int32_t handle) {
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return nullptr;
+    }
+
     int32_t trackedUid = -1;
     if (sCountByUidEnabled) {
         trackedUid = IPCThreadState::self()->getCallingUid();
@@ -177,6 +184,11 @@
 }
 
 BpBinder::BpBinder(BinderHandle&& handle, int32_t trackedUid) : BpBinder(Handle(handle)) {
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return;
+    }
+
     mTrackedUid = trackedUid;
 
     ALOGV("Creating BpBinder %p handle %d\n", this, this->binderHandle());
@@ -303,6 +315,11 @@
             status = rpcSession()->transact(sp<IBinder>::fromExisting(this), code, data, reply,
                                             flags);
         } else {
+            if constexpr (!kEnableKernelIpc) {
+                LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+                return INVALID_OPERATION;
+            }
+
             status = IPCThreadState::self()->transact(binderHandle(), code, data, reply, flags);
         }
         if (data.dataSize() > LOG_TRANSACTIONS_OVER_SIZE) {
@@ -328,6 +345,11 @@
 {
     if (isRpcBinder()) return UNKNOWN_TRANSACTION;
 
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return INVALID_OPERATION;
+    }
+
     Obituary ob;
     ob.recipient = recipient;
     ob.cookie = cookie;
@@ -336,6 +358,14 @@
     LOG_ALWAYS_FATAL_IF(recipient == nullptr,
                         "linkToDeath(): recipient must be non-NULL");
 
+    if (ProcessState::self()->getThreadPoolMaxTotalThreadCount() == 0) {
+        ALOGW("Linking to death on %s but there are no threads (yet?) listening to incoming "
+              "transactions. See ProcessState::startThreadPool and "
+              "ProcessState::setThreadPoolMaxThreadCount. Generally you should setup the binder "
+              "threadpool before other initialization steps.",
+              String8(getInterfaceDescriptor()).c_str());
+    }
+
     {
         AutoMutex _l(mLock);
 
@@ -366,6 +396,11 @@
 {
     if (isRpcBinder()) return UNKNOWN_TRANSACTION;
 
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return INVALID_OPERATION;
+    }
+
     AutoMutex _l(mLock);
 
     if (mObitsSent) {
@@ -401,6 +436,11 @@
 {
     LOG_ALWAYS_FATAL_IF(isRpcBinder(), "Cannot send obituary for remote binder.");
 
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return;
+    }
+
     ALOGV("Sending obituary for proxy %p handle %d, mObitsSent=%s\n", this, binderHandle(),
           mObitsSent ? "true" : "false");
 
@@ -469,12 +509,16 @@
     return this;
 }
 
-BpBinder::~BpBinder()
-{
-    ALOGV("Destroying BpBinder %p handle %d\n", this, binderHandle());
-
+BpBinder::~BpBinder() {
     if (CC_UNLIKELY(isRpcBinder())) return;
 
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return;
+    }
+
+    ALOGV("Destroying BpBinder %p handle %d\n", this, binderHandle());
+
     IPCThreadState* ipc = IPCThreadState::self();
 
     if (mTrackedUid >= 0) {
@@ -505,21 +549,31 @@
     }
 }
 
-void BpBinder::onFirstRef()
-{
-    ALOGV("onFirstRef BpBinder %p handle %d\n", this, binderHandle());
+void BpBinder::onFirstRef() {
     if (CC_UNLIKELY(isRpcBinder())) return;
+
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return;
+    }
+
+    ALOGV("onFirstRef BpBinder %p handle %d\n", this, binderHandle());
     IPCThreadState* ipc = IPCThreadState::self();
     if (ipc) ipc->incStrongHandle(binderHandle(), this);
 }
 
-void BpBinder::onLastStrongRef(const void* /*id*/)
-{
-    ALOGV("onLastStrongRef BpBinder %p handle %d\n", this, binderHandle());
+void BpBinder::onLastStrongRef(const void* /*id*/) {
     if (CC_UNLIKELY(isRpcBinder())) {
         (void)rpcSession()->sendDecStrong(this);
         return;
     }
+
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return;
+    }
+
+    ALOGV("onLastStrongRef BpBinder %p handle %d\n", this, binderHandle());
     IF_ALOGV() {
         printRefs();
     }
@@ -552,6 +606,11 @@
     // RPC binder doesn't currently support inc from weak binders
     if (CC_UNLIKELY(isRpcBinder())) return false;
 
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return false;
+    }
+
     ALOGV("onIncStrongAttempted BpBinder %p handle %d\n", this, binderHandle());
     IPCThreadState* ipc = IPCThreadState::self();
     return ipc ? ipc->attemptIncStrongHandle(binderHandle()) == NO_ERROR : false;
diff --git a/libs/binder/BuildFlags.h b/libs/binder/BuildFlags.h
new file mode 100644
index 0000000..3e9d1c2
--- /dev/null
+++ b/libs/binder/BuildFlags.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace android {
+
+#ifdef BINDER_RPC_SINGLE_THREADED
+constexpr bool kEnableRpcThreads = false;
+#else
+constexpr bool kEnableRpcThreads = true;
+#endif
+
+#ifdef BINDER_WITH_KERNEL_IPC
+constexpr bool kEnableKernelIpc = true;
+#else  // BINDER_WITH_KERNEL_IPC
+constexpr bool kEnableKernelIpc = false;
+#endif // BINDER_WITH_KERNEL_IPC
+
+} // namespace android
diff --git a/libs/binder/Debug.cpp b/libs/binder/Debug.cpp
index e4ac4b4..c6e4fb3 100644
--- a/libs/binder/Debug.cpp
+++ b/libs/binder/Debug.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "Debug.h"
+#include "BuildFlags.h"
 
 #include <binder/ProcessState.h>
 
@@ -301,6 +302,11 @@
 }
 
 ssize_t getBinderKernelReferences(size_t count, uintptr_t* buf) {
+    if constexpr (!kEnableKernelIpc) {
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return 0;
+    }
+
     sp<ProcessState> proc = ProcessState::selfOrNull();
     if (proc.get() == nullptr) {
         return 0;
diff --git a/libs/binder/FdTrigger.cpp b/libs/binder/FdTrigger.cpp
index 5e22593..d123fd1 100644
--- a/libs/binder/FdTrigger.cpp
+++ b/libs/binder/FdTrigger.cpp
@@ -28,25 +28,45 @@
 
 std::unique_ptr<FdTrigger> FdTrigger::make() {
     auto ret = std::make_unique<FdTrigger>();
+#ifndef BINDER_RPC_SINGLE_THREADED
     if (!android::base::Pipe(&ret->mRead, &ret->mWrite)) {
         ALOGE("Could not create pipe %s", strerror(errno));
         return nullptr;
     }
+#endif
     return ret;
 }
 
 void FdTrigger::trigger() {
+#ifdef BINDER_RPC_SINGLE_THREADED
+    mTriggered = true;
+#else
     mWrite.reset();
+#endif
 }
 
 bool FdTrigger::isTriggered() {
+#ifdef BINDER_RPC_SINGLE_THREADED
+    return mTriggered;
+#else
     return mWrite == -1;
+#endif
 }
 
 status_t FdTrigger::triggerablePoll(base::borrowed_fd fd, int16_t event) {
+#ifdef BINDER_RPC_SINGLE_THREADED
+    if (mTriggered) {
+        return DEAD_OBJECT;
+    }
+#endif
+
     LOG_ALWAYS_FATAL_IF(event == 0, "triggerablePoll %d with event 0 is not allowed", fd.get());
-    pollfd pfd[]{{.fd = fd.get(), .events = static_cast<int16_t>(event), .revents = 0},
-                 {.fd = mRead.get(), .events = 0, .revents = 0}};
+    pollfd pfd[]{
+            {.fd = fd.get(), .events = static_cast<int16_t>(event), .revents = 0},
+#ifndef BINDER_RPC_SINGLE_THREADED
+            {.fd = mRead.get(), .events = 0, .revents = 0},
+#endif
+    };
     int ret = TEMP_FAILURE_RETRY(poll(pfd, arraysize(pfd), -1));
     if (ret < 0) {
         return -errno;
@@ -55,6 +75,7 @@
 
     // At least one FD has events. Check them.
 
+#ifndef BINDER_RPC_SINGLE_THREADED
     // Detect explicit trigger(): DEAD_OBJECT
     if (pfd[1].revents & POLLHUP) {
         return DEAD_OBJECT;
@@ -68,6 +89,7 @@
 
     // pfd[1].revents is 0, hence pfd[0].revents must be set, and only possible values are
     // a subset of event | POLLHUP | POLLERR | POLLNVAL.
+#endif
 
     // POLLNVAL: invalid FD number, e.g. not opened.
     if (pfd[0].revents & POLLNVAL) {
diff --git a/libs/binder/FdTrigger.h b/libs/binder/FdTrigger.h
index a545d6c..5c7102e 100644
--- a/libs/binder/FdTrigger.h
+++ b/libs/binder/FdTrigger.h
@@ -55,7 +55,11 @@
     [[nodiscard]] status_t triggerablePoll(base::borrowed_fd fd, int16_t event);
 
 private:
+#ifdef BINDER_RPC_SINGLE_THREADED
+    bool mTriggered = false;
+#else
     base::unique_fd mWrite;
     base::unique_fd mRead;
+#endif
 };
 } // namespace android
diff --git a/libs/binder/IServiceManager.cpp b/libs/binder/IServiceManager.cpp
index fd2d868..fd47783 100644
--- a/libs/binder/IServiceManager.cpp
+++ b/libs/binder/IServiceManager.cpp
@@ -167,7 +167,7 @@
     }
 }
 
-#if !defined(__ANDROID_VNDK__) && defined(__ANDROID__)
+#if !defined(__ANDROID_VNDK__)
 // IPermissionController is not accessible to vendors
 
 bool checkCallingPermission(const String16& permission)
diff --git a/libs/binder/OS.cpp b/libs/binder/OS.cpp
new file mode 100644
index 0000000..6eb7272
--- /dev/null
+++ b/libs/binder/OS.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "OS.h"
+
+#include <android-base/file.h>
+#include <string.h>
+
+using android::base::ErrnoError;
+using android::base::Result;
+
+namespace android {
+
+Result<void> setNonBlocking(android::base::borrowed_fd fd) {
+    int flags = TEMP_FAILURE_RETRY(fcntl(fd.get(), F_GETFL));
+    if (flags == -1) {
+        return ErrnoError() << "Could not get flags for fd";
+    }
+    if (int ret = TEMP_FAILURE_RETRY(fcntl(fd.get(), F_SETFL, flags | O_NONBLOCK)); ret == -1) {
+        return ErrnoError() << "Could not set non-blocking flag for fd";
+    }
+    return {};
+}
+
+status_t getRandomBytes(uint8_t* data, size_t size) {
+    int ret = TEMP_FAILURE_RETRY(open("/dev/urandom", O_RDONLY | O_CLOEXEC | O_NOFOLLOW));
+    if (ret == -1) {
+        return -errno;
+    }
+
+    base::unique_fd fd(ret);
+    if (!base::ReadFully(fd, data, size)) {
+        return -errno;
+    }
+    return OK;
+}
+
+} // namespace android
diff --git a/libs/binder/OS.h b/libs/binder/OS.h
new file mode 100644
index 0000000..e802e9c
--- /dev/null
+++ b/libs/binder/OS.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <stddef.h>
+#include <cstdint>
+
+#include <android-base/result.h>
+#include <android-base/unique_fd.h>
+#include <utils/Errors.h>
+
+namespace android {
+
+android::base::Result<void> setNonBlocking(android::base::borrowed_fd fd);
+
+status_t getRandomBytes(uint8_t* data, size_t size);
+
+} // namespace android
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index e67dd7b..537527e 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -20,15 +20,14 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
-#include <linux/sched.h>
 #include <pthread.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/mman.h>
+#include <sys/resource.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <sys/resource.h>
 #include <unistd.h>
 
 #include <binder/Binder.h>
@@ -40,6 +39,7 @@
 #include <binder/Status.h>
 #include <binder/TextOutput.h>
 
+#include <android-base/scopeguard.h>
 #include <cutils/ashmem.h>
 #include <cutils/compiler.h>
 #include <utils/Flattenable.h>
@@ -51,12 +51,27 @@
 #include "RpcState.h"
 #include "Static.h"
 #include "Utils.h"
+
+// A lot of code in this file uses definitions from the
+// Linux kernel header for Binder <linux/android/binder.h>
+// which is included indirectly via "binder_module.h".
+// Non-Linux OSes do not have that header, so libbinder should be
+// built for those targets without kernel binder support, i.e.,
+// without BINDER_WITH_KERNEL_IPC. For this reason, all code in this
+// file that depends on kernel binder, including the header itself,
+// is conditional on BINDER_WITH_KERNEL_IPC.
+#ifdef BINDER_WITH_KERNEL_IPC
+#include <linux/sched.h>
 #include "binder_module.h"
+#else  // BINDER_WITH_KERNEL_IPC
+// Needed by {read,write}Pointer
+typedef uintptr_t binder_uintptr_t;
+#endif // BINDER_WITH_KERNEL_IPC
 
 #define LOG_REFS(...)
-//#define LOG_REFS(...) ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)
+// #define LOG_REFS(...) ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)
 #define LOG_ALLOC(...)
-//#define LOG_ALLOC(...) ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)
+// #define LOG_ALLOC(...) ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)
 
 // ---------------------------------------------------------------------------
 
@@ -99,6 +114,7 @@
     BLOB_ASHMEM_MUTABLE = 2,
 };
 
+#ifdef BINDER_WITH_KERNEL_IPC
 static void acquire_object(const sp<ProcessState>& proc, const flat_binder_object& obj,
                            const void* who) {
     switch (obj.hdr.type) {
@@ -151,6 +167,11 @@
 
     ALOGE("Invalid object type 0x%08x", obj.hdr.type);
 }
+#endif // BINDER_WITH_KERNEL_IPC
+
+static int toRawFd(const std::variant<base::unique_fd, base::borrowed_fd>& v) {
+    return std::visit([](const auto& fd) { return fd.get(); }, v);
+}
 
 Parcel::RpcFields::RpcFields(const sp<RpcSession>& session) : mSession(session) {
     LOG_ALWAYS_FATAL_IF(mSession == nullptr);
@@ -178,9 +199,11 @@
     return OK;
 }
 
+#ifdef BINDER_WITH_KERNEL_IPC
 static constexpr inline int schedPolicyMask(int policy, int priority) {
     return (priority & FLAT_BINDER_FLAG_PRIORITY_MASK) | ((policy & 3) << FLAT_BINDER_FLAG_SCHED_POLICY_SHIFT);
 }
+#endif // BINDER_WITH_KERNEL_IPC
 
 status_t Parcel::flattenBinder(const sp<IBinder>& binder) {
     BBinder* local = nullptr;
@@ -205,6 +228,7 @@
         return finishFlattenBinder(binder);
     }
 
+#ifdef BINDER_WITH_KERNEL_IPC
     flat_binder_object obj;
 
     int schedBits = 0;
@@ -261,6 +285,10 @@
     if (status != OK) return status;
 
     return finishFlattenBinder(binder);
+#else  // BINDER_WITH_KERNEL_IPC
+    LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+    return INVALID_OPERATION;
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
 status_t Parcel::unflattenBinder(sp<IBinder>* out) const
@@ -290,6 +318,7 @@
         return finishUnflattenBinder(binder, out);
     }
 
+#ifdef BINDER_WITH_KERNEL_IPC
     const flat_binder_object* flat = readObject(false);
 
     if (flat) {
@@ -307,6 +336,10 @@
         }
     }
     return BAD_TYPE;
+#else  // BINDER_WITH_KERNEL_IPC
+    LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+    return INVALID_OPERATION;
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
 // ---------------------------------------------------------------------------
@@ -471,6 +504,7 @@
     err = NO_ERROR;
 
     if (auto* kernelFields = maybeKernelFields()) {
+#ifdef BINDER_WITH_KERNEL_IPC
         auto* otherKernelFields = parcel->maybeKernelFields();
         LOG_ALWAYS_FATAL_IF(otherKernelFields == nullptr);
 
@@ -530,6 +564,67 @@
                 }
             }
         }
+#else
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return INVALID_OPERATION;
+#endif // BINDER_WITH_KERNEL_IPC
+    } else {
+        auto* rpcFields = maybeRpcFields();
+        LOG_ALWAYS_FATAL_IF(rpcFields == nullptr);
+        auto* otherRpcFields = parcel->maybeRpcFields();
+        if (otherRpcFields == nullptr) {
+            return BAD_TYPE;
+        }
+        if (rpcFields->mSession != otherRpcFields->mSession) {
+            return BAD_TYPE;
+        }
+
+        const size_t savedDataPos = mDataPos;
+        base::ScopeGuard scopeGuard = [&]() { mDataPos = savedDataPos; };
+
+        rpcFields->mObjectPositions.reserve(otherRpcFields->mObjectPositions.size());
+        if (otherRpcFields->mFds != nullptr) {
+            if (rpcFields->mFds == nullptr) {
+                rpcFields->mFds = std::make_unique<decltype(rpcFields->mFds)::element_type>();
+            }
+            rpcFields->mFds->reserve(otherRpcFields->mFds->size());
+        }
+        for (size_t i = 0; i < otherRpcFields->mObjectPositions.size(); i++) {
+            const binder_size_t objPos = otherRpcFields->mObjectPositions[i];
+            if (offset <= objPos && objPos < offset + len) {
+                size_t newDataPos = objPos - offset + startPos;
+                rpcFields->mObjectPositions.push_back(newDataPos);
+
+                mDataPos = newDataPos;
+                int32_t objectType;
+                if (status_t status = readInt32(&objectType); status != OK) {
+                    return status;
+                }
+                if (objectType != RpcFields::TYPE_NATIVE_FILE_DESCRIPTOR) {
+                    continue;
+                }
+
+                if (!mAllowFds) {
+                    return FDS_NOT_ALLOWED;
+                }
+
+                // Read FD, duplicate, and add to list.
+                int32_t fdIndex;
+                if (status_t status = readInt32(&fdIndex); status != OK) {
+                    return status;
+                }
+                const auto& oldFd = otherRpcFields->mFds->at(fdIndex);
+                // To match kernel binder behavior, we always dup, even if the
+                // FD was unowned in the source parcel.
+                rpcFields->mFds->emplace_back(
+                        base::unique_fd(fcntl(toRawFd(oldFd), F_DUPFD_CLOEXEC, 0)));
+                // Fixup the index in the data.
+                mDataPos = newDataPos + 4;
+                if (status_t status = writeInt32(rpcFields->mFds->size() - 1); status != OK) {
+                    return status;
+                }
+            }
+        }
     }
 
     return err;
@@ -584,7 +679,7 @@
 bool Parcel::hasFileDescriptors() const
 {
     if (const auto* rpcFields = maybeRpcFields()) {
-        return false;
+        return rpcFields->mFds != nullptr && !rpcFields->mFds->empty();
     }
     auto* kernelFields = maybeKernelFields();
     if (!kernelFields->mFdsKnown) {
@@ -596,6 +691,7 @@
 std::vector<sp<IBinder>> Parcel::debugReadAllStrongBinders() const {
     std::vector<sp<IBinder>> ret;
 
+#ifdef BINDER_WITH_KERNEL_IPC
     const auto* kernelFields = maybeKernelFields();
     if (kernelFields == nullptr) {
         return ret;
@@ -615,40 +711,43 @@
     }
 
     setDataPosition(initPosition);
+#endif // BINDER_WITH_KERNEL_IPC
+
     return ret;
 }
 
 std::vector<int> Parcel::debugReadAllFileDescriptors() const {
     std::vector<int> ret;
 
-    const auto* kernelFields = maybeKernelFields();
-    if (kernelFields == nullptr) {
-        return ret;
+    if (const auto* kernelFields = maybeKernelFields()) {
+#ifdef BINDER_WITH_KERNEL_IPC
+        size_t initPosition = dataPosition();
+        for (size_t i = 0; i < kernelFields->mObjectsSize; i++) {
+            binder_size_t offset = kernelFields->mObjects[i];
+            const flat_binder_object* flat =
+                    reinterpret_cast<const flat_binder_object*>(mData + offset);
+            if (flat->hdr.type != BINDER_TYPE_FD) continue;
+
+            setDataPosition(offset);
+
+            int fd = readFileDescriptor();
+            LOG_ALWAYS_FATAL_IF(fd == -1);
+            ret.push_back(fd);
+        }
+        setDataPosition(initPosition);
+#else
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+#endif
+    } else if (const auto* rpcFields = maybeRpcFields(); rpcFields && rpcFields->mFds) {
+        for (const auto& fd : *rpcFields->mFds) {
+            ret.push_back(toRawFd(fd));
+        }
     }
 
-    size_t initPosition = dataPosition();
-    for (size_t i = 0; i < kernelFields->mObjectsSize; i++) {
-        binder_size_t offset = kernelFields->mObjects[i];
-        const flat_binder_object* flat =
-                reinterpret_cast<const flat_binder_object*>(mData + offset);
-        if (flat->hdr.type != BINDER_TYPE_FD) continue;
-
-        setDataPosition(offset);
-
-        int fd = readFileDescriptor();
-        LOG_ALWAYS_FATAL_IF(fd == -1);
-        ret.push_back(fd);
-    }
-
-    setDataPosition(initPosition);
     return ret;
 }
 
 status_t Parcel::hasFileDescriptorsInRange(size_t offset, size_t len, bool* result) const {
-    const auto* kernelFields = maybeKernelFields();
-    if (kernelFields == nullptr) {
-        return BAD_TYPE;
-    }
     if (len > INT32_MAX || offset > INT32_MAX) {
         // Don't accept size_t values which may have come from an inadvertent conversion from a
         // negative int.
@@ -659,20 +758,38 @@
         return BAD_VALUE;
     }
     *result = false;
-    for (size_t i = 0; i < kernelFields->mObjectsSize; i++) {
-        size_t pos = kernelFields->mObjects[i];
-        if (pos < offset) continue;
-        if (pos + sizeof(flat_binder_object) > offset + len) {
-            if (kernelFields->mObjectsSorted) {
+    if (const auto* kernelFields = maybeKernelFields()) {
+#ifdef BINDER_WITH_KERNEL_IPC
+        for (size_t i = 0; i < kernelFields->mObjectsSize; i++) {
+            size_t pos = kernelFields->mObjects[i];
+            if (pos < offset) continue;
+            if (pos + sizeof(flat_binder_object) > offset + len) {
+                if (kernelFields->mObjectsSorted) {
+                    break;
+                } else {
+                    continue;
+                }
+            }
+            const flat_binder_object* flat =
+                    reinterpret_cast<const flat_binder_object*>(mData + pos);
+            if (flat->hdr.type == BINDER_TYPE_FD) {
+                *result = true;
                 break;
-            } else {
-                continue;
             }
         }
-        const flat_binder_object* flat = reinterpret_cast<const flat_binder_object*>(mData + pos);
-        if (flat->hdr.type == BINDER_TYPE_FD) {
-            *result = true;
-            break;
+#else
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return INVALID_OPERATION;
+#endif // BINDER_WITH_KERNEL_IPC
+    } else if (const auto* rpcFields = maybeRpcFields()) {
+        for (uint32_t pos : rpcFields->mObjectPositions) {
+            if (offset <= pos && pos < limit) {
+                const auto* type = reinterpret_cast<const RpcFields::ObjectType*>(mData + pos);
+                if (*type == RpcFields::TYPE_NATIVE_FILE_DESCRIPTOR) {
+                    *result = true;
+                    break;
+                }
+            }
         }
     }
     return NO_ERROR;
@@ -716,6 +833,7 @@
     }
 }
 
+#ifdef BINDER_WITH_KERNEL_IPC
 #if defined(__ANDROID_VNDK__)
 constexpr int32_t kHeader = B_PACK_CHARS('V', 'N', 'D', 'R');
 #elif defined(__ANDROID_RECOVERY__)
@@ -723,6 +841,7 @@
 #else
 constexpr int32_t kHeader = B_PACK_CHARS('S', 'Y', 'S', 'T');
 #endif
+#endif // BINDER_WITH_KERNEL_IPC
 
 // Write RPC headers.  (previously just the interface token)
 status_t Parcel::writeInterfaceToken(const String16& interface)
@@ -732,12 +851,17 @@
 
 status_t Parcel::writeInterfaceToken(const char16_t* str, size_t len) {
     if (auto* kernelFields = maybeKernelFields()) {
+#ifdef BINDER_WITH_KERNEL_IPC
         const IPCThreadState* threadState = IPCThreadState::self();
         writeInt32(threadState->getStrictModePolicy() | STRICT_MODE_PENALTY_GATHER);
         updateWorkSourceRequestHeaderPosition();
         writeInt32(threadState->shouldPropagateWorkSource() ? threadState->getCallingWorkSourceUid()
                                                             : IPCThreadState::kUnsetWorkSource);
         writeInt32(kHeader);
+#else  // BINDER_WITH_KERNEL_IPC
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        return INVALID_OPERATION;
+#endif // BINDER_WITH_KERNEL_IPC
     }
 
     // currently the interface identification token is just its name as a string
@@ -794,6 +918,7 @@
                               IPCThreadState* threadState) const
 {
     if (auto* kernelFields = maybeKernelFields()) {
+#ifdef BINDER_WITH_KERNEL_IPC
         // StrictModePolicy.
         int32_t strictPolicy = readInt32();
         if (threadState == nullptr) {
@@ -819,6 +944,11 @@
                   header);
             return false;
         }
+#else  // BINDER_WITH_KERNEL_IPC
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+        (void)threadState;
+        return false;
+#endif // BINDER_WITH_KERNEL_IPC
     }
 
     // Interface descriptor.
@@ -1293,13 +1423,43 @@
     return err;
 }
 
-status_t Parcel::writeFileDescriptor(int fd, bool takeOwnership)
-{
-    if (isForRpc()) {
-        ALOGE("Cannot write file descriptor to remote binder.");
-        return BAD_TYPE;
+status_t Parcel::writeFileDescriptor(int fd, bool takeOwnership) {
+    if (auto* rpcFields = maybeRpcFields()) {
+        std::variant<base::unique_fd, base::borrowed_fd> fdVariant;
+        if (takeOwnership) {
+            fdVariant = base::unique_fd(fd);
+        } else {
+            fdVariant = base::borrowed_fd(fd);
+        }
+        if (!mAllowFds) {
+            return FDS_NOT_ALLOWED;
+        }
+        switch (rpcFields->mSession->getFileDescriptorTransportMode()) {
+            case RpcSession::FileDescriptorTransportMode::NONE: {
+                return FDS_NOT_ALLOWED;
+            }
+            case RpcSession::FileDescriptorTransportMode::UNIX: {
+                if (rpcFields->mFds == nullptr) {
+                    rpcFields->mFds = std::make_unique<decltype(rpcFields->mFds)::element_type>();
+                }
+                size_t dataPos = mDataPos;
+                if (dataPos > UINT32_MAX) {
+                    return NO_MEMORY;
+                }
+                if (status_t err = writeInt32(RpcFields::TYPE_NATIVE_FILE_DESCRIPTOR); err != OK) {
+                    return err;
+                }
+                if (status_t err = writeInt32(rpcFields->mFds->size()); err != OK) {
+                    return err;
+                }
+                rpcFields->mObjectPositions.push_back(dataPos);
+                rpcFields->mFds->push_back(std::move(fdVariant));
+                return OK;
+            }
+        }
     }
 
+#ifdef BINDER_WITH_KERNEL_IPC
     flat_binder_object obj;
     obj.hdr.type = BINDER_TYPE_FD;
     obj.flags = 0x7f | FLAT_BINDER_FLAG_ACCEPTS_FDS;
@@ -1307,6 +1467,12 @@
     obj.handle = fd;
     obj.cookie = takeOwnership ? 1 : 0;
     return writeObject(obj, true);
+#else  // BINDER_WITH_KERNEL_IPC
+    LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+    (void)fd;
+    (void)takeOwnership;
+    return INVALID_OPERATION;
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
 status_t Parcel::writeDupFileDescriptor(int fd)
@@ -1460,6 +1626,7 @@
     auto* kernelFields = maybeKernelFields();
     LOG_ALWAYS_FATAL_IF(kernelFields == nullptr, "Can't write flat_binder_object to RPC Parcel");
 
+#ifdef BINDER_WITH_KERNEL_IPC
     const bool enoughData = (mDataPos+sizeof(val)) <= mDataCapacity;
     const bool enoughObjects = kernelFields->mObjectsSize < kernelFields->mObjectsCapacity;
     if (enoughData && enoughObjects) {
@@ -1502,6 +1669,12 @@
     }
 
     goto restart_write;
+#else  // BINDER_WITH_KERNEL_IPC
+    LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+    (void)val;
+    (void)nullMetaData;
+    return INVALID_OPERATION;
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
 status_t Parcel::writeNoException()
@@ -1519,6 +1692,7 @@
         return OK;
     }
 
+#ifdef BINDER_WITH_KERNEL_IPC
     // Don't allow non-object reads on object data
     if (kernelFields->mObjectsSorted || kernelFields->mObjectsSize <= 1) {
     data_sorted:
@@ -1571,6 +1745,10 @@
     kernelFields->mNextObjectHint = 0;
     kernelFields->mObjectsSorted = true;
     goto data_sorted;
+#else  // BINDER_WITH_KERNEL_IPC
+    (void)upperBound;
+    return NO_ERROR;
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
 status_t Parcel::read(void* outData, size_t len) const
@@ -2038,8 +2216,32 @@
     return h;
 }
 
-int Parcel::readFileDescriptor() const
-{
+int Parcel::readFileDescriptor() const {
+    if (const auto* rpcFields = maybeRpcFields()) {
+        if (!std::binary_search(rpcFields->mObjectPositions.begin(),
+                                rpcFields->mObjectPositions.end(), mDataPos)) {
+            ALOGW("Attempt to read file descriptor from Parcel %p at offset %zu that is not in the "
+                  "object list",
+                  this, mDataPos);
+            return BAD_TYPE;
+        }
+
+        int32_t objectType = readInt32();
+        if (objectType != RpcFields::TYPE_NATIVE_FILE_DESCRIPTOR) {
+            return BAD_TYPE;
+        }
+
+        int32_t fdIndex = readInt32();
+        if (rpcFields->mFds == nullptr || fdIndex < 0 ||
+            static_cast<size_t>(fdIndex) >= rpcFields->mFds->size()) {
+            ALOGE("RPC Parcel contains invalid file descriptor index. index=%d fd_count=%zu",
+                  fdIndex, rpcFields->mFds ? rpcFields->mFds->size() : 0);
+            return BAD_VALUE;
+        }
+        return toRawFd(rpcFields->mFds->at(fdIndex));
+    }
+
+#ifdef BINDER_WITH_KERNEL_IPC
     const flat_binder_object* flat = readObject(true);
 
     if (flat && flat->hdr.type == BINDER_TYPE_FD) {
@@ -2047,10 +2249,13 @@
     }
 
     return BAD_TYPE;
+#else  // BINDER_WITH_KERNEL_IPC
+    LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+    return INVALID_OPERATION;
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
-int Parcel::readParcelFileDescriptor() const
-{
+int Parcel::readParcelFileDescriptor() const {
     int32_t hasComm = readInt32();
     int fd = readFileDescriptor();
     if (hasComm != 0) {
@@ -2203,6 +2408,8 @@
 
     return err;
 }
+
+#ifdef BINDER_WITH_KERNEL_IPC
 const flat_binder_object* Parcel::readObject(bool nullMetaData) const
 {
     const auto* kernelFields = maybeKernelFields();
@@ -2268,24 +2475,29 @@
     }
     return nullptr;
 }
+#endif // BINDER_WITH_KERNEL_IPC
 
 void Parcel::closeFileDescriptors() {
-    auto* kernelFields = maybeKernelFields();
-    if (kernelFields == nullptr) {
-        return;
-    }
-    size_t i = kernelFields->mObjectsSize;
-    if (i > 0) {
-        //ALOGI("Closing file descriptors for %zu objects...", i);
-    }
-    while (i > 0) {
-        i--;
-        const flat_binder_object* flat =
-                reinterpret_cast<flat_binder_object*>(mData + kernelFields->mObjects[i]);
-        if (flat->hdr.type == BINDER_TYPE_FD) {
-            //ALOGI("Closing fd: %ld", flat->handle);
-            close(flat->handle);
+    if (auto* kernelFields = maybeKernelFields()) {
+#ifdef BINDER_WITH_KERNEL_IPC
+        size_t i = kernelFields->mObjectsSize;
+        if (i > 0) {
+            // ALOGI("Closing file descriptors for %zu objects...", i);
         }
+        while (i > 0) {
+            i--;
+            const flat_binder_object* flat =
+                    reinterpret_cast<flat_binder_object*>(mData + kernelFields->mObjects[i]);
+            if (flat->hdr.type == BINDER_TYPE_FD) {
+                // ALOGI("Closing fd: %ld", flat->handle);
+                close(flat->handle);
+            }
+        }
+#else  // BINDER_WITH_KERNEL_IPC
+        LOG_ALWAYS_FATAL("Binder kernel driver disabled at build time");
+#endif // BINDER_WITH_KERNEL_IPC
+    } else if (auto* rpcFields = maybeRpcFields()) {
+        rpcFields->mFds.reset();
     }
 }
 
@@ -2331,6 +2543,7 @@
     kernelFields->mObjectsSize = kernelFields->mObjectsCapacity = objectsCount;
     mOwner = relFunc;
 
+#ifdef BINDER_WITH_KERNEL_IPC
     binder_size_t minOffset = 0;
     for (size_t i = 0; i < kernelFields->mObjectsSize; i++) {
         binder_size_t offset = kernelFields->mObjects[i];
@@ -2361,10 +2574,17 @@
         minOffset = offset + sizeof(flat_binder_object);
     }
     scanForFds();
+#else  // BINDER_WITH_KERNEL_IPC
+    LOG_ALWAYS_FATAL_IF(objectsCount != 0,
+                        "Non-zero objects count passed to Parcel with kernel driver disabled");
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
-void Parcel::rpcSetDataReference(const sp<RpcSession>& session, const uint8_t* data,
-                                 size_t dataSize, release_func relFunc) {
+status_t Parcel::rpcSetDataReference(
+        const sp<RpcSession>& session, const uint8_t* data, size_t dataSize,
+        const uint32_t* objectTable, size_t objectTableSize,
+        std::vector<std::variant<base::unique_fd, base::borrowed_fd>>&& ancillaryFds,
+        release_func relFunc) {
     // this code uses 'mOwner == nullptr' to understand whether it owns memory
     LOG_ALWAYS_FATAL_IF(relFunc == nullptr, "must provide cleanup function");
 
@@ -2373,9 +2593,29 @@
     freeData();
     markForRpc(session);
 
+    auto* rpcFields = maybeRpcFields();
+    LOG_ALWAYS_FATAL_IF(rpcFields == nullptr); // guaranteed by markForRpc.
+
     mData = const_cast<uint8_t*>(data);
     mDataSize = mDataCapacity = dataSize;
     mOwner = relFunc;
+
+    if (objectTableSize != ancillaryFds.size()) {
+        ALOGE("objectTableSize=%zu ancillaryFds.size=%zu", objectTableSize, ancillaryFds.size());
+        freeData(); // don't leak mData
+        return BAD_VALUE;
+    }
+
+    rpcFields->mObjectPositions.reserve(objectTableSize);
+    for (size_t i = 0; i < objectTableSize; i++) {
+        rpcFields->mObjectPositions.push_back(objectTable[i]);
+    }
+    if (!ancillaryFds.empty()) {
+        rpcFields->mFds = std::make_unique<decltype(rpcFields->mFds)::element_type>();
+        *rpcFields->mFds = std::move(ancillaryFds);
+    }
+
+    return OK;
 }
 
 void Parcel::print(TextOutput& to, uint32_t /*flags*/) const
@@ -2388,6 +2628,7 @@
     } else if (dataSize() > 0) {
         const uint8_t* DATA = data();
         to << indent << HexDump(DATA, dataSize()) << dedent;
+#ifdef BINDER_WITH_KERNEL_IPC
         if (const auto* kernelFields = maybeKernelFields()) {
             const binder_size_t* OBJS = kernelFields->mObjects;
             const size_t N = objectsCount();
@@ -2399,6 +2640,7 @@
                    << TypeCode(flat->hdr.type & 0x7f7f7f00) << " = " << flat->binder;
             }
         }
+#endif // BINDER_WITH_KERNEL_IPC
     } else {
         to << "NULL";
     }
@@ -2413,6 +2655,7 @@
         return;
     }
 
+#ifdef BINDER_WITH_KERNEL_IPC
     size_t i = kernelFields->mObjectsSize;
     if (i == 0) {
         return;
@@ -2425,6 +2668,7 @@
         const flat_binder_object* flat = reinterpret_cast<flat_binder_object*>(data + objects[i]);
         release_object(proc, *flat, this);
     }
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
 void Parcel::acquireObjects()
@@ -2434,6 +2678,7 @@
         return;
     }
 
+#ifdef BINDER_WITH_KERNEL_IPC
     size_t i = kernelFields->mObjectsSize;
     if (i == 0) {
         return;
@@ -2446,6 +2691,7 @@
         const flat_binder_object* flat = reinterpret_cast<flat_binder_object*>(data + objects[i]);
         acquire_object(proc, *flat, this);
     }
+#endif // BINDER_WITH_KERNEL_IPC
 }
 
 void Parcel::freeData()
@@ -2558,6 +2804,9 @@
         kernelFields->mObjectsSorted = false;
         kernelFields->mHasFds = false;
         kernelFields->mFdsKnown = true;
+    } else if (auto* rpcFields = maybeRpcFields()) {
+        rpcFields->mObjectPositions.clear();
+        rpcFields->mFds.reset();
     }
     mAllowFds = true;
 
@@ -2573,17 +2822,26 @@
     }
 
     auto* kernelFields = maybeKernelFields();
+    auto* rpcFields = maybeRpcFields();
 
     // If shrinking, first adjust for any objects that appear
     // after the new data size.
-    size_t objectsSize = kernelFields ? kernelFields->mObjectsSize : 0;
-    if (kernelFields && desired < mDataSize) {
+    size_t objectsSize =
+            kernelFields ? kernelFields->mObjectsSize : rpcFields->mObjectPositions.size();
+    if (desired < mDataSize) {
         if (desired == 0) {
             objectsSize = 0;
         } else {
-            while (objectsSize > 0) {
-                if (kernelFields->mObjects[objectsSize - 1] < desired) break;
-                objectsSize--;
+            if (kernelFields) {
+                while (objectsSize > 0) {
+                    if (kernelFields->mObjects[objectsSize - 1] < desired) break;
+                    objectsSize--;
+                }
+            } else {
+                while (objectsSize > 0) {
+                    if (rpcFields->mObjectPositions[objectsSize - 1] < desired) break;
+                    objectsSize--;
+                }
             }
         }
     }
@@ -2604,7 +2862,7 @@
         }
         binder_size_t* objects = nullptr;
 
-        if (objectsSize) {
+        if (kernelFields && objectsSize) {
             objects = (binder_size_t*)calloc(objectsSize, sizeof(binder_size_t));
             if (!objects) {
                 free(data);
@@ -2620,6 +2878,12 @@
             acquireObjects();
             kernelFields->mObjectsSize = oldObjectsSize;
         }
+        if (rpcFields) {
+            if (status_t status = truncateRpcObjects(objectsSize); status != OK) {
+                free(data);
+                return status;
+            }
+        }
 
         if (mData) {
             memcpy(data, mData, mDataSize < desired ? mDataSize : desired);
@@ -2649,6 +2913,7 @@
 
     } else if (mData) {
         if (kernelFields && objectsSize < kernelFields->mObjectsSize) {
+#ifdef BINDER_WITH_KERNEL_IPC
             // Need to release refs on any objects we are dropping.
             const sp<ProcessState> proc(ProcessState::self());
             for (size_t i = objectsSize; i < kernelFields->mObjectsSize; i++) {
@@ -2677,6 +2942,14 @@
             kernelFields->mObjectsSize = objectsSize;
             kernelFields->mNextObjectHint = 0;
             kernelFields->mObjectsSorted = false;
+#else  // BINDER_WITH_KERNEL_IPC
+            LOG_ALWAYS_FATAL("Non-zero numObjects for RPC Parcel");
+#endif // BINDER_WITH_KERNEL_IPC
+        }
+        if (rpcFields) {
+            if (status_t status = truncateRpcObjects(objectsSize); status != OK) {
+                return status;
+            }
         }
 
         // We own the data, so we can just do a realloc().
@@ -2734,6 +3007,35 @@
     return NO_ERROR;
 }
 
+status_t Parcel::truncateRpcObjects(size_t newObjectsSize) {
+    auto* rpcFields = maybeRpcFields();
+    if (newObjectsSize == 0) {
+        rpcFields->mObjectPositions.clear();
+        if (rpcFields->mFds) {
+            rpcFields->mFds->clear();
+        }
+        return OK;
+    }
+    while (rpcFields->mObjectPositions.size() > newObjectsSize) {
+        uint32_t pos = rpcFields->mObjectPositions.back();
+        rpcFields->mObjectPositions.pop_back();
+        const auto type = *reinterpret_cast<const RpcFields::ObjectType*>(mData + pos);
+        if (type == RpcFields::TYPE_NATIVE_FILE_DESCRIPTOR) {
+            const auto fdIndex =
+                    *reinterpret_cast<const int32_t*>(mData + pos + sizeof(RpcFields::ObjectType));
+            if (rpcFields->mFds == nullptr || fdIndex < 0 ||
+                static_cast<size_t>(fdIndex) >= rpcFields->mFds->size()) {
+                ALOGE("RPC Parcel contains invalid file descriptor index. index=%d fd_count=%zu",
+                      fdIndex, rpcFields->mFds ? rpcFields->mFds->size() : 0);
+                return BAD_VALUE;
+            }
+            // In practice, this always removes the last element.
+            rpcFields->mFds->erase(rpcFields->mFds->begin() + fdIndex);
+        }
+    }
+    return OK;
+}
+
 void Parcel::initState()
 {
     LOG_ALLOC("Parcel %p: initState", this);
@@ -2760,6 +3062,7 @@
     kernelFields->mFdsKnown = true;
 }
 
+#ifdef BINDER_WITH_KERNEL_IPC
 size_t Parcel::getBlobAshmemSize() const
 {
     // This used to return the size of all blobs that were written to ashmem, now we're returning
@@ -2792,6 +3095,7 @@
     }
     return openAshmemSize;
 }
+#endif // BINDER_WITH_KERNEL_IPC
 
 // --- Parcel::Blob ---
 
diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index 7faff47..1f311ac 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -19,6 +19,7 @@
 #include <binder/ProcessState.h>
 
 #include <android-base/result.h>
+#include <android-base/scopeguard.h>
 #include <android-base/strings.h>
 #include <binder/BpBinder.h>
 #include <binder/IPCThreadState.h>
@@ -420,6 +421,9 @@
 }
 
 size_t ProcessState::getThreadPoolMaxTotalThreadCount() const {
+    pthread_mutex_lock(&mThreadCountLock);
+    base::ScopeGuard detachGuard = [&]() { pthread_mutex_unlock(&mThreadCountLock); };
+
     // may actually be one more than this, if join is called
     if (mThreadPoolStarted) {
         return mCurrentThreads < mKernelStartedThreads
diff --git a/libs/binder/RpcServer.cpp b/libs/binder/RpcServer.cpp
index 528341e..096d5cc 100644
--- a/libs/binder/RpcServer.cpp
+++ b/libs/binder/RpcServer.cpp
@@ -32,7 +32,9 @@
 #include <log/log.h>
 #include <utils/Compat.h>
 
+#include "BuildFlags.h"
 #include "FdTrigger.h"
+#include "OS.h"
 #include "RpcSocketAddress.h"
 #include "RpcState.h"
 #include "RpcWireFormat.h"
@@ -122,28 +124,36 @@
     mProtocolVersion = version;
 }
 
+void RpcServer::setSupportedFileDescriptorTransportModes(
+        const std::vector<RpcSession::FileDescriptorTransportMode>& modes) {
+    mSupportedFileDescriptorTransportModes.reset();
+    for (RpcSession::FileDescriptorTransportMode mode : modes) {
+        mSupportedFileDescriptorTransportModes.set(static_cast<size_t>(mode));
+    }
+}
+
 void RpcServer::setRootObject(const sp<IBinder>& binder) {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     mRootObjectFactory = nullptr;
     mRootObjectWeak = mRootObject = binder;
 }
 
 void RpcServer::setRootObjectWeak(const wp<IBinder>& binder) {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     mRootObject.clear();
     mRootObjectFactory = nullptr;
     mRootObjectWeak = binder;
 }
 void RpcServer::setPerSessionRootObject(
         std::function<sp<IBinder>(const void*, size_t)>&& makeObject) {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     mRootObject.clear();
     mRootObjectWeak.clear();
     mRootObjectFactory = std::move(makeObject);
 }
 
 sp<IBinder> RpcServer::getRootObject() {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     bool hasWeak = mRootObjectWeak.unsafe_get();
     sp<IBinder> ret = mRootObjectWeak.promote();
     ALOGW_IF(hasWeak && ret == nullptr, "RpcServer root object is freed, returning nullptr");
@@ -151,7 +161,7 @@
 }
 
 std::vector<uint8_t> RpcServer::getCertificate(RpcCertificateFormat format) {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     return mCtx->getCertificate(format);
 }
 
@@ -160,15 +170,17 @@
 }
 
 void RpcServer::start() {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     LOG_ALWAYS_FATAL_IF(mJoinThread.get(), "Already started!");
-    mJoinThread = std::make_unique<std::thread>(&joinRpcServer, sp<RpcServer>::fromExisting(this));
+    mJoinThread =
+            std::make_unique<RpcMaybeThread>(&joinRpcServer, sp<RpcServer>::fromExisting(this));
+    rpcJoinIfSingleThreaded(*mJoinThread);
 }
 
 void RpcServer::join() {
 
     {
-        std::lock_guard<std::mutex> _l(mLock);
+        RpcMutexLockGuard _l(mLock);
         LOG_ALWAYS_FATAL_IF(!mServer.ok(), "RpcServer must be setup to join.");
         LOG_ALWAYS_FATAL_IF(mShutdownTrigger != nullptr, "Already joined");
         mJoinThreadRunning = true;
@@ -196,24 +208,31 @@
         LOG_RPC_DETAIL("accept4 on fd %d yields fd %d", mServer.get(), clientFd.get());
 
         {
-            std::lock_guard<std::mutex> _l(mLock);
-            std::thread thread =
-                    std::thread(&RpcServer::establishConnection, sp<RpcServer>::fromExisting(this),
-                                std::move(clientFd), addr, addrLen);
-            mConnectingThreads[thread.get_id()] = std::move(thread);
+            RpcMutexLockGuard _l(mLock);
+            RpcMaybeThread thread = RpcMaybeThread(&RpcServer::establishConnection,
+                                                   sp<RpcServer>::fromExisting(this),
+                                                   std::move(clientFd), addr, addrLen);
+
+            auto& threadRef = mConnectingThreads[thread.get_id()];
+            threadRef = std::move(thread);
+            rpcJoinIfSingleThreaded(threadRef);
         }
     }
     LOG_RPC_DETAIL("RpcServer::join exiting with %s", statusToString(status).c_str());
 
-    {
-        std::lock_guard<std::mutex> _l(mLock);
+    if constexpr (kEnableRpcThreads) {
+        RpcMutexLockGuard _l(mLock);
         mJoinThreadRunning = false;
+    } else {
+        // Multi-threaded builds clear this in shutdown(), but we need it valid
+        // so the loop above exits cleanly
+        mShutdownTrigger = nullptr;
     }
     mShutdownCv.notify_all();
 }
 
 bool RpcServer::shutdown() {
-    std::unique_lock<std::mutex> _l(mLock);
+    RpcMutexUniqueLock _l(mLock);
     if (mShutdownTrigger == nullptr) {
         LOG_RPC_DETAIL("Cannot shutdown. No shutdown trigger installed (already shutdown?)");
         return false;
@@ -224,10 +243,16 @@
     for (auto& [id, session] : mSessions) {
         (void)id;
         // server lock is a more general lock
-        std::lock_guard<std::mutex> _lSession(session->mMutex);
+        RpcMutexLockGuard _lSession(session->mMutex);
         session->mShutdownTrigger->trigger();
     }
 
+    if constexpr (!kEnableRpcThreads) {
+        // In single-threaded mode we're done here, everything else that
+        // needs to happen should be at the end of RpcServer::join()
+        return true;
+    }
+
     while (mJoinThreadRunning || !mConnectingThreads.empty() || !mSessions.empty()) {
         if (std::cv_status::timeout == mShutdownCv.wait_for(_l, std::chrono::seconds(1))) {
             ALOGE("Waiting for RpcServer to shut down (1s w/o progress). Join thread running: %d, "
@@ -255,7 +280,7 @@
 }
 
 std::vector<sp<RpcSession>> RpcServer::listSessions() {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     std::vector<sp<RpcSession>> sessions;
     for (auto& [id, session] : mSessions) {
         (void)id;
@@ -265,7 +290,7 @@
 }
 
 size_t RpcServer::numUninitializedSessions() {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     return mConnectingThreads.size();
 }
 
@@ -292,7 +317,7 @@
     if (status == OK) {
         iovec iov{&header, sizeof(header)};
         status = client->interruptableReadFully(server->mShutdownTrigger.get(), &iov, 1,
-                                                std::nullopt);
+                                                std::nullopt, /*ancillaryFds=*/nullptr);
         if (status != OK) {
             ALOGE("Failed to read ID for client connecting to RPC server: %s",
                   statusToString(status).c_str());
@@ -307,7 +332,7 @@
                 sessionId.resize(header.sessionIdSize);
                 iovec iov{sessionId.data(), sessionId.size()};
                 status = client->interruptableReadFully(server->mShutdownTrigger.get(), &iov, 1,
-                                                        std::nullopt);
+                                                        std::nullopt, /*ancillaryFds=*/nullptr);
                 if (status != OK) {
                     ALOGE("Failed to read session ID for client connecting to RPC server: %s",
                           statusToString(status).c_str());
@@ -338,7 +363,7 @@
 
             iovec iov{&response, sizeof(response)};
             status = client->interruptableWriteFully(server->mShutdownTrigger.get(), &iov, 1,
-                                                     std::nullopt);
+                                                     std::nullopt, nullptr);
             if (status != OK) {
                 ALOGE("Failed to send new session response: %s", statusToString(status).c_str());
                 // still need to cleanup before we can return
@@ -346,12 +371,12 @@
         }
     }
 
-    std::thread thisThread;
+    RpcMaybeThread thisThread;
     sp<RpcSession> session;
     {
-        std::unique_lock<std::mutex> _l(server->mLock);
+        RpcMutexUniqueLock _l(server->mLock);
 
-        auto threadId = server->mConnectingThreads.find(std::this_thread::get_id());
+        auto threadId = server->mConnectingThreads.find(rpc_this_thread::get_id());
         LOG_ALWAYS_FATAL_IF(threadId == server->mConnectingThreads.end(),
                             "Must establish connection on owned thread");
         thisThread = std::move(threadId->second);
@@ -396,6 +421,19 @@
             session->setMaxIncomingThreads(server->mMaxThreads);
             if (!session->setProtocolVersion(protocolVersion)) return;
 
+            if (header.fileDescriptorTransportMode <
+                        server->mSupportedFileDescriptorTransportModes.size() &&
+                server->mSupportedFileDescriptorTransportModes.test(
+                        header.fileDescriptorTransportMode)) {
+                session->setFileDescriptorTransportMode(
+                        static_cast<RpcSession::FileDescriptorTransportMode>(
+                                header.fileDescriptorTransportMode));
+            } else {
+                ALOGE("Rejecting connection: FileDescriptorTransportMode is not supported: %hhu",
+                      header.fileDescriptorTransportMode);
+                return;
+            }
+
             // if null, falls back to server root
             sp<IBinder> sessionSpecificRoot;
             if (server->mRootObjectFactory != nullptr) {
@@ -486,7 +524,7 @@
     LOG_RPC_DETAIL("Dropping session with address %s",
                    base::HexString(id.data(), id.size()).c_str());
 
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     auto it = mSessions.find(id);
     LOG_ALWAYS_FATAL_IF(it == mSessions.end(), "Bad state, unknown session id %s",
                         base::HexString(id.data(), id.size()).c_str());
@@ -500,17 +538,17 @@
 }
 
 bool RpcServer::hasServer() {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     return mServer.ok();
 }
 
 unique_fd RpcServer::releaseServer() {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     return std::move(mServer);
 }
 
 status_t RpcServer::setupExternalServer(base::unique_fd serverFd) {
-    std::lock_guard<std::mutex> _l(mLock);
+    RpcMutexLockGuard _l(mLock);
     if (mServer.ok()) {
         ALOGE("Each RpcServer can only have one server.");
         return INVALID_OPERATION;
diff --git a/libs/binder/RpcSession.cpp b/libs/binder/RpcSession.cpp
index 8edc78f..80f6a37 100644
--- a/libs/binder/RpcSession.cpp
+++ b/libs/binder/RpcSession.cpp
@@ -21,7 +21,6 @@
 #include <dlfcn.h>
 #include <inttypes.h>
 #include <poll.h>
-#include <pthread.h>
 #include <unistd.h>
 
 #include <string_view>
@@ -38,6 +37,7 @@
 #include <utils/String8.h>
 
 #include "FdTrigger.h"
+#include "OS.h"
 #include "RpcSocketAddress.h"
 #include "RpcState.h"
 #include "RpcWireFormat.h"
@@ -60,7 +60,7 @@
 RpcSession::~RpcSession() {
     LOG_RPC_DETAIL("RpcSession destroyed %p", this);
 
-    std::lock_guard<std::mutex> _l(mMutex);
+    RpcMutexLockGuard _l(mMutex);
     LOG_ALWAYS_FATAL_IF(mConnections.mIncoming.size() != 0,
                         "Should not be able to destroy a session with servers in use.");
 }
@@ -77,7 +77,7 @@
 }
 
 void RpcSession::setMaxIncomingThreads(size_t threads) {
-    std::lock_guard<std::mutex> _l(mMutex);
+    RpcMutexLockGuard _l(mMutex);
     LOG_ALWAYS_FATAL_IF(!mConnections.mOutgoing.empty() || !mConnections.mIncoming.empty(),
                         "Must set max incoming threads before setting up connections, but has %zu "
                         "client(s) and %zu server(s)",
@@ -86,12 +86,12 @@
 }
 
 size_t RpcSession::getMaxIncomingThreads() {
-    std::lock_guard<std::mutex> _l(mMutex);
+    RpcMutexLockGuard _l(mMutex);
     return mMaxIncomingThreads;
 }
 
 void RpcSession::setMaxOutgoingThreads(size_t threads) {
-    std::lock_guard<std::mutex> _l(mMutex);
+    RpcMutexLockGuard _l(mMutex);
     LOG_ALWAYS_FATAL_IF(!mConnections.mOutgoing.empty() || !mConnections.mIncoming.empty(),
                         "Must set max outgoing threads before setting up connections, but has %zu "
                         "client(s) and %zu server(s)",
@@ -100,7 +100,7 @@
 }
 
 size_t RpcSession::getMaxOutgoingThreads() {
-    std::lock_guard<std::mutex> _l(mMutex);
+    RpcMutexLockGuard _l(mMutex);
     return mMaxOutgoingThreads;
 }
 
@@ -113,7 +113,7 @@
         return false;
     }
 
-    std::lock_guard<std::mutex> _l(mMutex);
+    RpcMutexLockGuard _l(mMutex);
     if (mProtocolVersion && version > *mProtocolVersion) {
         ALOGE("Cannot upgrade explicitly capped protocol version %u to newer version %u",
               *mProtocolVersion, version);
@@ -125,10 +125,18 @@
 }
 
 std::optional<uint32_t> RpcSession::getProtocolVersion() {
-    std::lock_guard<std::mutex> _l(mMutex);
+    RpcMutexLockGuard _l(mMutex);
     return mProtocolVersion;
 }
 
+void RpcSession::setFileDescriptorTransportMode(FileDescriptorTransportMode mode) {
+    mFileDescriptorTransportMode = mode;
+}
+
+RpcSession::FileDescriptorTransportMode RpcSession::getFileDescriptorTransportMode() {
+    return mFileDescriptorTransportMode;
+}
+
 status_t RpcSession::setupUnixDomainClient(const char* path) {
     return setupSocketClient(UnixSocketAddress(path));
 }
@@ -201,7 +209,7 @@
 }
 
 bool RpcSession::shutdownAndWait(bool wait) {
-    std::unique_lock<std::mutex> _l(mMutex);
+    RpcMutexUniqueLock _l(mMutex);
     LOG_ALWAYS_FATAL_IF(mShutdownTrigger == nullptr, "Shutdown trigger not installed");
 
     mShutdownTrigger->trigger();
@@ -214,6 +222,7 @@
     }
 
     _l.unlock();
+
     mRpcBinderState->clear();
 
     return true;
@@ -248,7 +257,7 @@
 
 status_t RpcSession::readId() {
     {
-        std::lock_guard<std::mutex> _l(mMutex);
+        RpcMutexLockGuard _l(mMutex);
         LOG_ALWAYS_FATAL_IF(mForServer != nullptr, "Can only update ID for client.");
     }
 
@@ -274,7 +283,7 @@
     mCv.notify_all();
 }
 
-void RpcSession::WaitForShutdownListener::waitForShutdown(std::unique_lock<std::mutex>& lock,
+void RpcSession::WaitForShutdownListener::waitForShutdown(RpcMutexUniqueLock& lock,
                                                           const sp<RpcSession>& session) {
     while (session->mConnections.mIncoming.size() > 0) {
         if (std::cv_status::timeout == mCv.wait_for(lock, std::chrono::seconds(1))) {
@@ -285,11 +294,11 @@
     }
 }
 
-void RpcSession::preJoinThreadOwnership(std::thread thread) {
-    LOG_ALWAYS_FATAL_IF(thread.get_id() != std::this_thread::get_id(), "Must own this thread");
+void RpcSession::preJoinThreadOwnership(RpcMaybeThread thread) {
+    LOG_ALWAYS_FATAL_IF(thread.get_id() != rpc_this_thread::get_id(), "Must own this thread");
 
     {
-        std::lock_guard<std::mutex> _l(mMutex);
+        RpcMutexLockGuard _l(mMutex);
         mConnections.mThreads[thread.get_id()] = std::move(thread);
     }
 }
@@ -396,8 +405,8 @@
 
     sp<RpcSession::EventListener> listener;
     {
-        std::lock_guard<std::mutex> _l(session->mMutex);
-        auto it = session->mConnections.mThreads.find(std::this_thread::get_id());
+        RpcMutexLockGuard _l(session->mMutex);
+        auto it = session->mConnections.mThreads.find(rpc_this_thread::get_id());
         LOG_ALWAYS_FATAL_IF(it == session->mConnections.mThreads.end());
         it->second.detach();
         session->mConnections.mThreads.erase(it);
@@ -430,7 +439,7 @@
 status_t RpcSession::setupClient(const std::function<status_t(const std::vector<uint8_t>& sessionId,
                                                               bool incoming)>& connectAndInit) {
     {
-        std::lock_guard<std::mutex> _l(mMutex);
+        RpcMutexLockGuard _l(mMutex);
         LOG_ALWAYS_FATAL_IF(mConnections.mOutgoing.size() != 0,
                             "Must only setup session once, but already has %zu clients",
                             mConnections.mOutgoing.size());
@@ -492,7 +501,11 @@
         return status;
     }
 
+#ifdef BINDER_RPC_SINGLE_THREADED
+    constexpr size_t outgoingThreads = 1;
+#else  // BINDER_RPC_SINGLE_THREADED
     size_t outgoingThreads = std::min(numThreadsAvailable, mMaxOutgoingThreads);
+#endif // BINDER_RPC_SINGLE_THREADED
     ALOGI_IF(outgoingThreads != numThreadsAvailable,
              "Server hints client to start %zu outgoing threads, but client will only start %zu "
              "because it is preconfigured to start at most %zu outgoing threads.",
@@ -606,6 +619,7 @@
     RpcConnectionHeader header{
             .version = mProtocolVersion.value_or(RPC_WIRE_PROTOCOL_VERSION),
             .options = 0,
+            .fileDescriptorTransportMode = static_cast<uint8_t>(mFileDescriptorTransportMode),
             .sessionIdSize = static_cast<uint16_t>(sessionId.size()),
     };
 
@@ -614,8 +628,8 @@
     }
 
     iovec headerIov{&header, sizeof(header)};
-    auto sendHeaderStatus =
-            server->interruptableWriteFully(mShutdownTrigger.get(), &headerIov, 1, std::nullopt);
+    auto sendHeaderStatus = server->interruptableWriteFully(mShutdownTrigger.get(), &headerIov, 1,
+                                                            std::nullopt, nullptr);
     if (sendHeaderStatus != OK) {
         ALOGE("Could not write connection header to socket: %s",
               statusToString(sendHeaderStatus).c_str());
@@ -625,8 +639,9 @@
     if (sessionId.size() > 0) {
         iovec sessionIov{const_cast<void*>(static_cast<const void*>(sessionId.data())),
                          sessionId.size()};
-        auto sendSessionIdStatus = server->interruptableWriteFully(mShutdownTrigger.get(),
-                                                                   &sessionIov, 1, std::nullopt);
+        auto sendSessionIdStatus =
+                server->interruptableWriteFully(mShutdownTrigger.get(), &sessionIov, 1,
+                                                std::nullopt, nullptr);
         if (sendSessionIdStatus != OK) {
             ALOGE("Could not write session ID ('%s') to socket: %s",
                   base::HexString(sessionId.data(), sessionId.size()).c_str(),
@@ -645,14 +660,14 @@
 }
 
 status_t RpcSession::addIncomingConnection(std::unique_ptr<RpcTransport> rpcTransport) {
-    std::mutex mutex;
-    std::condition_variable joinCv;
-    std::unique_lock<std::mutex> lock(mutex);
-    std::thread thread;
+    RpcMutex mutex;
+    RpcConditionVariable joinCv;
+    RpcMutexUniqueLock lock(mutex);
+    RpcMaybeThread thread;
     sp<RpcSession> thiz = sp<RpcSession>::fromExisting(this);
     bool ownershipTransferred = false;
-    thread = std::thread([&]() {
-        std::unique_lock<std::mutex> threadLock(mutex);
+    thread = RpcMaybeThread([&]() {
+        RpcMutexUniqueLock threadLock(mutex);
         std::unique_ptr<RpcTransport> movedRpcTransport = std::move(rpcTransport);
         // NOLINTNEXTLINE(performance-unnecessary-copy-initialization)
         sp<RpcSession> session = thiz;
@@ -668,6 +683,7 @@
 
         RpcSession::join(std::move(session), std::move(setupResult));
     });
+    rpcJoinIfSingleThreaded(thread);
     joinCv.wait(lock, [&] { return ownershipTransferred; });
     LOG_ALWAYS_FATAL_IF(!ownershipTransferred);
     return OK;
@@ -687,9 +703,9 @@
 status_t RpcSession::addOutgoingConnection(std::unique_ptr<RpcTransport> rpcTransport, bool init) {
     sp<RpcConnection> connection = sp<RpcConnection>::make();
     {
-        std::lock_guard<std::mutex> _l(mMutex);
+        RpcMutexLockGuard _l(mMutex);
         connection->rpcTransport = std::move(rpcTransport);
-        connection->exclusiveTid = base::GetThreadId();
+        connection->exclusiveTid = rpcGetThreadId();
         mConnections.mOutgoing.push_back(connection);
     }
 
@@ -699,10 +715,7 @@
                 mRpcBinderState->sendConnectionInit(connection, sp<RpcSession>::fromExisting(this));
     }
 
-    {
-        std::lock_guard<std::mutex> _l(mMutex);
-        connection->exclusiveTid = std::nullopt;
-    }
+    clearConnectionTid(connection);
 
     return status;
 }
@@ -729,7 +742,7 @@
 
 sp<RpcSession::RpcConnection> RpcSession::assignIncomingConnectionToThisThread(
         std::unique_ptr<RpcTransport> rpcTransport) {
-    std::lock_guard<std::mutex> _l(mMutex);
+    RpcMutexLockGuard _l(mMutex);
 
     if (mConnections.mIncoming.size() >= mMaxIncomingThreads) {
         ALOGE("Cannot add thread to session with %zu threads (max is set to %zu)",
@@ -747,7 +760,7 @@
 
     sp<RpcConnection> session = sp<RpcConnection>::make();
     session->rpcTransport = std::move(rpcTransport);
-    session->exclusiveTid = base::GetThreadId();
+    session->exclusiveTid = rpcGetThreadId();
 
     mConnections.mIncoming.push_back(session);
     mConnections.mMaxIncoming = mConnections.mIncoming.size();
@@ -756,7 +769,7 @@
 }
 
 bool RpcSession::removeIncomingConnection(const sp<RpcConnection>& connection) {
-    std::unique_lock<std::mutex> _l(mMutex);
+    RpcMutexUniqueLock _l(mMutex);
     if (auto it =
                 std::find(mConnections.mIncoming.begin(), mConnections.mIncoming.end(), connection);
         it != mConnections.mIncoming.end()) {
@@ -773,6 +786,15 @@
     return false;
 }
 
+void RpcSession::clearConnectionTid(const sp<RpcConnection>& connection) {
+    RpcMutexUniqueLock _l(mMutex);
+    connection->exclusiveTid = std::nullopt;
+    if (mConnections.mWaitingThreads > 0) {
+        _l.unlock();
+        mAvailableConnectionCv.notify_one();
+    }
+}
+
 std::vector<uint8_t> RpcSession::getCertificate(RpcCertificateFormat format) {
     return mCtx->getCertificate(format);
 }
@@ -783,8 +805,8 @@
     connection->mConnection = nullptr;
     connection->mReentrant = false;
 
-    uint64_t tid = base::GetThreadId();
-    std::unique_lock<std::mutex> _l(session->mMutex);
+    uint64_t tid = rpcGetThreadId();
+    RpcMutexUniqueLock _l(session->mMutex);
 
     session->mConnections.mWaitingThreads++;
     while (true) {
@@ -902,12 +924,7 @@
     // is using this fd, and it retains the right to it. So, we don't give up
     // exclusive ownership, and no thread is freed.
     if (!mReentrant && mConnection != nullptr) {
-        std::unique_lock<std::mutex> _l(mSession->mMutex);
-        mConnection->exclusiveTid = std::nullopt;
-        if (mSession->mConnections.mWaitingThreads > 0) {
-            _l.unlock();
-            mSession->mAvailableConnectionCv.notify_one();
-        }
+        mSession->clearConnectionTid(mConnection);
     }
 }
 
diff --git a/libs/binder/RpcState.cpp b/libs/binder/RpcState.cpp
index 419df86..0ae75cd 100644
--- a/libs/binder/RpcState.cpp
+++ b/libs/binder/RpcState.cpp
@@ -21,6 +21,7 @@
 #include <android-base/hex.h>
 #include <android-base/macros.h>
 #include <android-base/scopeguard.h>
+#include <android-base/stringprintf.h>
 #include <binder/BpBinder.h>
 #include <binder/IPCThreadState.h>
 #include <binder/RpcServer.h>
@@ -35,7 +36,7 @@
 
 namespace android {
 
-using base::ScopeGuard;
+using base::StringPrintf;
 
 #if RPC_FLAKE_PRONE
 void rpcMaybeWaitToFlake() {
@@ -43,13 +44,22 @@
     [[clang::no_destroy]] static std::mutex m;
     unsigned num;
     {
-        std::lock_guard<std::mutex> lock(m);
+        RpcMutexLockGuard lock(m);
         num = r();
     }
     if (num % 10 == 0) usleep(num % 1000);
 }
 #endif
 
+static bool enableAncillaryFds(RpcSession::FileDescriptorTransportMode mode) {
+    switch (mode) {
+        case RpcSession::FileDescriptorTransportMode::NONE:
+            return false;
+        case RpcSession::FileDescriptorTransportMode::UNIX:
+            return true;
+    }
+}
+
 RpcState::RpcState() {}
 RpcState::~RpcState() {}
 
@@ -78,7 +88,7 @@
         return INVALID_OPERATION;
     }
 
-    std::lock_guard<std::mutex> _l(mNodeMutex);
+    RpcMutexLockGuard _l(mNodeMutex);
     if (mTerminated) return DEAD_OBJECT;
 
     // TODO(b/182939933): maybe move address out of BpBinder, and keep binder->address map
@@ -154,7 +164,7 @@
         return BAD_VALUE;
     }
 
-    std::lock_guard<std::mutex> _l(mNodeMutex);
+    RpcMutexLockGuard _l(mNodeMutex);
     if (mTerminated) return DEAD_OBJECT;
 
     if (auto it = mNodeForAddress.find(address); it != mNodeForAddress.end()) {
@@ -189,7 +199,7 @@
     // extra reference counting packets now.
     if (binder->remoteBinder()) return OK;
 
-    std::unique_lock<std::mutex> _l(mNodeMutex);
+    RpcMutexUniqueLock _l(mNodeMutex);
     if (mTerminated) return DEAD_OBJECT;
 
     auto it = mNodeForAddress.find(address);
@@ -217,17 +227,17 @@
 }
 
 size_t RpcState::countBinders() {
-    std::lock_guard<std::mutex> _l(mNodeMutex);
+    RpcMutexLockGuard _l(mNodeMutex);
     return mNodeForAddress.size();
 }
 
 void RpcState::dump() {
-    std::lock_guard<std::mutex> _l(mNodeMutex);
+    RpcMutexLockGuard _l(mNodeMutex);
     dumpLocked();
 }
 
 void RpcState::clear() {
-    std::unique_lock<std::mutex> _l(mNodeMutex);
+    RpcMutexUniqueLock _l(mNodeMutex);
 
     if (mTerminated) {
         LOG_ALWAYS_FATAL_IF(!mNodeForAddress.empty(),
@@ -310,9 +320,11 @@
     mData.reset(new (std::nothrow) uint8_t[size]);
 }
 
-status_t RpcState::rpcSend(const sp<RpcSession::RpcConnection>& connection,
-                           const sp<RpcSession>& session, const char* what, iovec* iovs, int niovs,
-                           const std::optional<android::base::function_ref<status_t()>>& altPoll) {
+status_t RpcState::rpcSend(
+        const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+        const char* what, iovec* iovs, int niovs,
+        const std::optional<android::base::function_ref<status_t()>>& altPoll,
+        const std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds) {
     for (int i = 0; i < niovs; i++) {
         LOG_RPC_DETAIL("Sending %s (part %d of %d) on RpcTransport %p: %s",
                        what, i + 1, niovs, connection->rpcTransport.get(),
@@ -321,7 +333,8 @@
 
     if (status_t status =
                 connection->rpcTransport->interruptableWriteFully(session->mShutdownTrigger.get(),
-                                                                  iovs, niovs, altPoll);
+                                                                  iovs, niovs, altPoll,
+                                                                  ancillaryFds);
         status != OK) {
         LOG_RPC_DETAIL("Failed to write %s (%d iovs) on RpcTransport %p, error: %s", what, niovs,
                        connection->rpcTransport.get(), statusToString(status).c_str());
@@ -332,11 +345,14 @@
     return OK;
 }
 
-status_t RpcState::rpcRec(const sp<RpcSession::RpcConnection>& connection,
-                          const sp<RpcSession>& session, const char* what, iovec* iovs, int niovs) {
+status_t RpcState::rpcRec(
+        const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+        const char* what, iovec* iovs, int niovs,
+        std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds) {
     if (status_t status =
                 connection->rpcTransport->interruptableReadFully(session->mShutdownTrigger.get(),
-                                                                 iovs, niovs, std::nullopt);
+                                                                 iovs, niovs, std::nullopt,
+                                                                 ancillaryFds);
         status != OK) {
         LOG_RPC_DETAIL("Failed to read %s (%d iovs) on RpcTransport %p, error: %s", what, niovs,
                        connection->rpcTransport.get(), statusToString(status).c_str());
@@ -356,7 +372,7 @@
                                           const sp<RpcSession>& session, uint32_t* version) {
     RpcNewSessionResponse response;
     iovec iov{&response, sizeof(response)};
-    if (status_t status = rpcRec(connection, session, "new session response", &iov, 1);
+    if (status_t status = rpcRec(connection, session, "new session response", &iov, 1, nullptr);
         status != OK) {
         return status;
     }
@@ -377,7 +393,8 @@
                                       const sp<RpcSession>& session) {
     RpcOutgoingConnectionInit init;
     iovec iov{&init, sizeof(init)};
-    if (status_t status = rpcRec(connection, session, "connection init", &iov, 1); status != OK)
+    if (status_t status = rpcRec(connection, session, "connection init", &iov, 1, nullptr);
+        status != OK)
         return status;
 
     static_assert(sizeof(init.msg) == sizeof(RPC_CONNECTION_INIT_OKAY));
@@ -449,20 +466,12 @@
 status_t RpcState::transact(const sp<RpcSession::RpcConnection>& connection,
                             const sp<IBinder>& binder, uint32_t code, const Parcel& data,
                             const sp<RpcSession>& session, Parcel* reply, uint32_t flags) {
-    if (!data.isForRpc()) {
-        ALOGE("Refusing to send RPC with parcel not crafted for RPC call on binder %p code "
-              "%" PRIu32,
-              binder.get(), code);
-        return BAD_TYPE;
+    std::string errorMsg;
+    if (status_t status = validateParcel(session, data, &errorMsg); status != OK) {
+        ALOGE("Refusing to send RPC on binder %p code %" PRIu32 ": Parcel %p failed validation: %s",
+              binder.get(), code, &data, errorMsg.c_str());
+        return status;
     }
-
-    if (data.objectsCount() != 0) {
-        ALOGE("Parcel at %p has attached objects but is being used in an RPC call on binder %p "
-              "code %" PRIu32,
-              &data, binder.get(), code);
-        return BAD_TYPE;
-    }
-
     uint64_t address;
     if (status_t status = onBinderLeaving(session, binder, &address); status != OK) return status;
 
@@ -478,7 +487,7 @@
     uint64_t asyncNumber = 0;
 
     if (address != 0) {
-        std::unique_lock<std::mutex> _l(mNodeMutex);
+        RpcMutexUniqueLock _l(mNodeMutex);
         if (mTerminated) return DEAD_OBJECT; // avoid fatal only, otherwise races
         auto it = mNodeForAddress.find(address);
         LOG_ALWAYS_FATAL_IF(it == mNodeForAddress.end(),
@@ -494,9 +503,11 @@
         }
     }
 
-    // objectTable always empty for now. Will be populated from `data` soon.
-    std::vector<uint32_t> objectTable;
-    Span<const uint32_t> objectTableSpan = {objectTable.data(), objectTable.size()};
+    auto* rpcFields = data.maybeRpcFields();
+    LOG_ALWAYS_FATAL_IF(rpcFields == nullptr);
+
+    Span<const uint32_t> objectTableSpan = Span<const uint32_t>{rpcFields->mObjectPositions.data(),
+                                                                rpcFields->mObjectPositions.size()};
 
     uint32_t bodySize;
     LOG_ALWAYS_FATAL_IF(__builtin_add_overflow(sizeof(RpcWireTransaction), data.dataSize(),
@@ -532,25 +543,25 @@
             {const_cast<uint8_t*>(data.data()), data.dataSize()},
             objectTableSpan.toIovec(),
     };
-    if (status_t status = rpcSend(connection, session, "transaction", iovs, arraysize(iovs),
-                                  [&] {
-                                      if (waitUs > kWaitLogUs) {
-                                          ALOGE("Cannot send command, trying to process pending "
-                                                "refcounts. Waiting %zuus. Too "
-                                                "many oneway calls?",
-                                                waitUs);
-                                      }
+    if (status_t status = rpcSend(
+                connection, session, "transaction", iovs, arraysize(iovs),
+                [&] {
+                    if (waitUs > kWaitLogUs) {
+                        ALOGE("Cannot send command, trying to process pending refcounts. Waiting "
+                              "%zuus. Too many oneway calls?",
+                              waitUs);
+                    }
 
-                                      if (waitUs > 0) {
-                                          usleep(waitUs);
-                                          waitUs = std::min(kWaitMaxUs, waitUs * 2);
-                                      } else {
-                                          waitUs = 1;
-                                      }
+                    if (waitUs > 0) {
+                        usleep(waitUs);
+                        waitUs = std::min(kWaitMaxUs, waitUs * 2);
+                    } else {
+                        waitUs = 1;
+                    }
 
-                                      return drainCommands(connection, session,
-                                                           CommandType::CONTROL_ONLY);
-                                  });
+                    return drainCommands(connection, session, CommandType::CONTROL_ONLY);
+                },
+                rpcFields->mFds.get());
         status != OK) {
         // TODO(b/167966510): need to undo onBinderLeaving - we know the
         // refcount isn't successfully transferred.
@@ -581,18 +592,26 @@
 
 status_t RpcState::waitForReply(const sp<RpcSession::RpcConnection>& connection,
                                 const sp<RpcSession>& session, Parcel* reply) {
+    std::vector<std::variant<base::unique_fd, base::borrowed_fd>> ancillaryFds;
     RpcWireHeader command;
     while (true) {
         iovec iov{&command, sizeof(command)};
-        if (status_t status = rpcRec(connection, session, "command header (for reply)", &iov, 1);
+        if (status_t status = rpcRec(connection, session, "command header (for reply)", &iov, 1,
+                                     enableAncillaryFds(session->getFileDescriptorTransportMode())
+                                             ? &ancillaryFds
+                                             : nullptr);
             status != OK)
             return status;
 
         if (command.command == RPC_COMMAND_REPLY) break;
 
-        if (status_t status = processCommand(connection, session, command, CommandType::ANY);
+        if (status_t status = processCommand(connection, session, command, CommandType::ANY,
+                                             std::move(ancillaryFds));
             status != OK)
             return status;
+
+        // Reset to avoid spurious use-after-move warning from clang-tidy.
+        ancillaryFds = decltype(ancillaryFds)();
     }
 
     const size_t rpcReplyWireSize = RpcWireReply::wireSize(session->getProtocolVersion().value());
@@ -614,21 +633,33 @@
             {&rpcReply, rpcReplyWireSize},
             {data.data(), data.size()},
     };
-    if (status_t status = rpcRec(connection, session, "reply body", iovs, arraysize(iovs));
+    if (status_t status = rpcRec(connection, session, "reply body", iovs, arraysize(iovs), nullptr);
         status != OK)
         return status;
+
     if (rpcReply.status != OK) return rpcReply.status;
 
     Span<const uint8_t> parcelSpan = {data.data(), data.size()};
+    Span<const uint32_t> objectTableSpan;
     if (session->getProtocolVersion().value() >=
         RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE) {
         Span<const uint8_t> objectTableBytes = parcelSpan.splitOff(rpcReply.parcelDataSize);
-        LOG_ALWAYS_FATAL_IF(objectTableBytes.size > 0, "Non-empty object table not supported yet.");
+        std::optional<Span<const uint32_t>> maybeSpan =
+                objectTableBytes.reinterpret<const uint32_t>();
+        if (!maybeSpan.has_value()) {
+            ALOGE("Bad object table size inferred from RpcWireReply. Saw bodySize=%" PRId32
+                  " sizeofHeader=%zu parcelSize=%" PRId32 " objectTableBytesSize=%zu. Terminating!",
+                  command.bodySize, rpcReplyWireSize, rpcReply.parcelDataSize,
+                  objectTableBytes.size);
+            return BAD_VALUE;
+        }
+        objectTableSpan = *maybeSpan;
     }
 
     data.release();
-    reply->rpcSetDataReference(session, parcelSpan.data, parcelSpan.size, cleanup_reply_data);
-    return OK;
+    return reply->rpcSetDataReference(session, parcelSpan.data, parcelSpan.size,
+                                      objectTableSpan.data, objectTableSpan.size,
+                                      std::move(ancillaryFds), cleanup_reply_data);
 }
 
 status_t RpcState::sendDecStrongToTarget(const sp<RpcSession::RpcConnection>& connection,
@@ -639,7 +670,7 @@
     };
 
     {
-        std::lock_guard<std::mutex> _l(mNodeMutex);
+        RpcMutexLockGuard _l(mNodeMutex);
         if (mTerminated) return DEAD_OBJECT; // avoid fatal only, otherwise races
         auto it = mNodeForAddress.find(addr);
         LOG_ALWAYS_FATAL_IF(it == mNodeForAddress.end(),
@@ -671,13 +702,17 @@
                                         const sp<RpcSession>& session, CommandType type) {
     LOG_RPC_DETAIL("getAndExecuteCommand on RpcTransport %p", connection->rpcTransport.get());
 
+    std::vector<std::variant<base::unique_fd, base::borrowed_fd>> ancillaryFds;
     RpcWireHeader command;
     iovec iov{&command, sizeof(command)};
-    if (status_t status = rpcRec(connection, session, "command header (for server)", &iov, 1);
+    if (status_t status =
+                rpcRec(connection, session, "command header (for server)", &iov, 1,
+                       enableAncillaryFds(session->getFileDescriptorTransportMode()) ? &ancillaryFds
+                                                                                     : nullptr);
         status != OK)
         return status;
 
-    return processCommand(connection, session, command, type);
+    return processCommand(connection, session, command, type, std::move(ancillaryFds));
 }
 
 status_t RpcState::drainCommands(const sp<RpcSession::RpcConnection>& connection,
@@ -693,28 +728,33 @@
     return OK;
 }
 
-status_t RpcState::processCommand(const sp<RpcSession::RpcConnection>& connection,
-                                  const sp<RpcSession>& session, const RpcWireHeader& command,
-                                  CommandType type) {
+status_t RpcState::processCommand(
+        const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+        const RpcWireHeader& command, CommandType type,
+        std::vector<std::variant<base::unique_fd, base::borrowed_fd>>&& ancillaryFds) {
+#ifdef BINDER_WITH_KERNEL_IPC
     IPCThreadState* kernelBinderState = IPCThreadState::selfOrNull();
     IPCThreadState::SpGuard spGuard{
             .address = __builtin_frame_address(0),
-            .context = "processing binder RPC command",
+            .context = "processing binder RPC command (where RpcServer::setPerSessionRootObject is "
+                       "used to distinguish callers)",
     };
     const IPCThreadState::SpGuard* origGuard;
     if (kernelBinderState != nullptr) {
         origGuard = kernelBinderState->pushGetCallingSpGuard(&spGuard);
     }
-    ScopeGuard guardUnguard = [&]() {
+
+    base::ScopeGuard guardUnguard = [&]() {
         if (kernelBinderState != nullptr) {
             kernelBinderState->restoreGetCallingSpGuard(origGuard);
         }
     };
+#endif // BINDER_WITH_KERNEL_IPC
 
     switch (command.command) {
         case RPC_COMMAND_TRANSACT:
             if (type != CommandType::ANY) return BAD_TYPE;
-            return processTransact(connection, session, command);
+            return processTransact(connection, session, command, std::move(ancillaryFds));
         case RPC_COMMAND_DEC_STRONG:
             return processDecStrong(connection, session, command);
     }
@@ -728,8 +768,10 @@
     (void)session->shutdownAndWait(false);
     return DEAD_OBJECT;
 }
-status_t RpcState::processTransact(const sp<RpcSession::RpcConnection>& connection,
-                                   const sp<RpcSession>& session, const RpcWireHeader& command) {
+status_t RpcState::processTransact(
+        const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+        const RpcWireHeader& command,
+        std::vector<std::variant<base::unique_fd, base::borrowed_fd>>&& ancillaryFds) {
     LOG_ALWAYS_FATAL_IF(command.command != RPC_COMMAND_TRANSACT, "command: %d", command.command);
 
     CommandData transactionData(command.bodySize);
@@ -737,10 +779,12 @@
         return NO_MEMORY;
     }
     iovec iov{transactionData.data(), transactionData.size()};
-    if (status_t status = rpcRec(connection, session, "transaction body", &iov, 1); status != OK)
+    if (status_t status = rpcRec(connection, session, "transaction body", &iov, 1, nullptr);
+        status != OK)
         return status;
 
-    return processTransactInternal(connection, session, std::move(transactionData));
+    return processTransactInternal(connection, session, std::move(transactionData),
+                                   std::move(ancillaryFds));
 }
 
 static void do_nothing_to_transact_data(Parcel* p, const uint8_t* data, size_t dataSize,
@@ -752,9 +796,10 @@
     (void)objectsCount;
 }
 
-status_t RpcState::processTransactInternal(const sp<RpcSession::RpcConnection>& connection,
-                                           const sp<RpcSession>& session,
-                                           CommandData transactionData) {
+status_t RpcState::processTransactInternal(
+        const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+        CommandData transactionData,
+        std::vector<std::variant<base::unique_fd, base::borrowed_fd>>&& ancillaryFds) {
     // for 'recursive' calls to this, we have already read and processed the
     // binder from the transaction data and taken reference counts into account,
     // so it is cached here.
@@ -798,7 +843,7 @@
             (void)session->shutdownAndWait(false);
             replyStatus = BAD_VALUE;
         } else if (oneway) {
-            std::unique_lock<std::mutex> _l(mNodeMutex);
+            RpcMutexUniqueLock _l(mNodeMutex);
             auto it = mNodeForAddress.find(addr);
             if (it->second.binder.promote() != target) {
                 ALOGE("Binder became invalid during transaction. Bad client? %" PRIu64, addr);
@@ -845,11 +890,21 @@
         Span<const uint8_t> parcelSpan = {transaction->data,
                                           transactionData.size() -
                                                   offsetof(RpcWireTransaction, data)};
-        if (session->getProtocolVersion().value() >=
+        Span<const uint32_t> objectTableSpan;
+        if (session->getProtocolVersion().value() >
             RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE) {
             Span<const uint8_t> objectTableBytes = parcelSpan.splitOff(transaction->parcelDataSize);
-            LOG_ALWAYS_FATAL_IF(objectTableBytes.size > 0,
-                                "Non-empty object table not supported yet.");
+            std::optional<Span<const uint32_t>> maybeSpan =
+                    objectTableBytes.reinterpret<const uint32_t>();
+            if (!maybeSpan.has_value()) {
+                ALOGE("Bad object table size inferred from RpcWireTransaction. Saw bodySize=%zu "
+                      "sizeofHeader=%zu parcelSize=%" PRId32
+                      " objectTableBytesSize=%zu. Terminating!",
+                      transactionData.size(), sizeof(RpcWireTransaction),
+                      transaction->parcelDataSize, objectTableBytes.size);
+                return BAD_VALUE;
+            }
+            objectTableSpan = *maybeSpan;
         }
 
         Parcel data;
@@ -857,47 +912,53 @@
         // only holds onto it for the duration of this function call. Parcel will be
         // deleted before the 'transactionData' object.
 
-        data.rpcSetDataReference(session, parcelSpan.data, parcelSpan.size,
-                                 do_nothing_to_transact_data);
+        replyStatus =
+                data.rpcSetDataReference(session, parcelSpan.data, parcelSpan.size,
+                                         objectTableSpan.data, objectTableSpan.size,
+                                         std::move(ancillaryFds), do_nothing_to_transact_data);
+        // Reset to avoid spurious use-after-move warning from clang-tidy.
+        ancillaryFds = std::remove_reference<decltype(ancillaryFds)>::type();
 
-        if (target) {
-            bool origAllowNested = connection->allowNested;
-            connection->allowNested = !oneway;
+        if (replyStatus == OK) {
+            if (target) {
+                bool origAllowNested = connection->allowNested;
+                connection->allowNested = !oneway;
 
-            replyStatus = target->transact(transaction->code, data, &reply, transaction->flags);
+                replyStatus = target->transact(transaction->code, data, &reply, transaction->flags);
 
-            connection->allowNested = origAllowNested;
-        } else {
-            LOG_RPC_DETAIL("Got special transaction %u", transaction->code);
+                connection->allowNested = origAllowNested;
+            } else {
+                LOG_RPC_DETAIL("Got special transaction %u", transaction->code);
 
-            switch (transaction->code) {
-                case RPC_SPECIAL_TRANSACT_GET_MAX_THREADS: {
-                    replyStatus = reply.writeInt32(session->getMaxIncomingThreads());
-                    break;
-                }
-                case RPC_SPECIAL_TRANSACT_GET_SESSION_ID: {
-                    // for client connections, this should always report the value
-                    // originally returned from the server, so this is asserting
-                    // that it exists
-                    replyStatus = reply.writeByteVector(session->mId);
-                    break;
-                }
-                default: {
-                    sp<RpcServer> server = session->server();
-                    if (server) {
-                        switch (transaction->code) {
-                            case RPC_SPECIAL_TRANSACT_GET_ROOT: {
-                                sp<IBinder> root = session->mSessionSpecificRootObject
-                                        ?: server->getRootObject();
-                                replyStatus = reply.writeStrongBinder(root);
-                                break;
+                switch (transaction->code) {
+                    case RPC_SPECIAL_TRANSACT_GET_MAX_THREADS: {
+                        replyStatus = reply.writeInt32(session->getMaxIncomingThreads());
+                        break;
+                    }
+                    case RPC_SPECIAL_TRANSACT_GET_SESSION_ID: {
+                        // for client connections, this should always report the value
+                        // originally returned from the server, so this is asserting
+                        // that it exists
+                        replyStatus = reply.writeByteVector(session->mId);
+                        break;
+                    }
+                    default: {
+                        sp<RpcServer> server = session->server();
+                        if (server) {
+                            switch (transaction->code) {
+                                case RPC_SPECIAL_TRANSACT_GET_ROOT: {
+                                    sp<IBinder> root = session->mSessionSpecificRootObject
+                                            ?: server->getRootObject();
+                                    replyStatus = reply.writeStrongBinder(root);
+                                    break;
+                                }
+                                default: {
+                                    replyStatus = UNKNOWN_TRANSACTION;
+                                }
                             }
-                            default: {
-                                replyStatus = UNKNOWN_TRANSACTION;
-                            }
+                        } else {
+                            ALOGE("Special command sent, but no server object attached.");
                         }
-                    } else {
-                        ALOGE("Special command sent, but no server object attached.");
                     }
                 }
             }
@@ -923,7 +984,7 @@
         // downside: asynchronous transactions may drown out synchronous
         // transactions.
         {
-            std::unique_lock<std::mutex> _l(mNodeMutex);
+            RpcMutexUniqueLock _l(mNodeMutex);
             auto it = mNodeForAddress.find(addr);
             // last refcount dropped after this transaction happened
             if (it == mNodeForAddress.end()) return OK;
@@ -969,11 +1030,22 @@
         replyStatus = flushExcessBinderRefs(session, addr, target);
     }
 
+    std::string errorMsg;
+    if (status_t status = validateParcel(session, reply, &errorMsg); status != OK) {
+        ALOGE("Reply Parcel failed validation: %s", errorMsg.c_str());
+        // Forward the error to the client of the transaction.
+        reply.freeData();
+        reply.markForRpc(session);
+        replyStatus = status;
+    }
+
+    auto* rpcFields = reply.maybeRpcFields();
+    LOG_ALWAYS_FATAL_IF(rpcFields == nullptr);
+
     const size_t rpcReplyWireSize = RpcWireReply::wireSize(session->getProtocolVersion().value());
 
-    // objectTable always empty for now. Will be populated from `reply` soon.
-    std::vector<uint32_t> objectTable;
-    Span<const uint32_t> objectTableSpan = {objectTable.data(), objectTable.size()};
+    Span<const uint32_t> objectTableSpan = Span<const uint32_t>{rpcFields->mObjectPositions.data(),
+                                                                rpcFields->mObjectPositions.size()};
 
     uint32_t bodySize;
     LOG_ALWAYS_FATAL_IF(__builtin_add_overflow(rpcReplyWireSize, reply.dataSize(), &bodySize) ||
@@ -998,7 +1070,8 @@
             {const_cast<uint8_t*>(reply.data()), reply.dataSize()},
             objectTableSpan.toIovec(),
     };
-    return rpcSend(connection, session, "reply", iovs, arraysize(iovs), std::nullopt);
+    return rpcSend(connection, session, "reply", iovs, arraysize(iovs), std::nullopt,
+                   rpcFields->mFds.get());
 }
 
 status_t RpcState::processDecStrong(const sp<RpcSession::RpcConnection>& connection,
@@ -1014,11 +1087,12 @@
 
     RpcDecStrong body;
     iovec iov{&body, sizeof(RpcDecStrong)};
-    if (status_t status = rpcRec(connection, session, "dec ref body", &iov, 1); status != OK)
+    if (status_t status = rpcRec(connection, session, "dec ref body", &iov, 1, nullptr);
+        status != OK)
         return status;
 
     uint64_t addr = RpcWireAddress::toRaw(body.address);
-    std::unique_lock<std::mutex> _l(mNodeMutex);
+    RpcMutexUniqueLock _l(mNodeMutex);
     auto it = mNodeForAddress.find(addr);
     if (it == mNodeForAddress.end()) {
         ALOGE("Unknown binder address %" PRIu64 " for dec strong.", addr);
@@ -1055,6 +1129,50 @@
     return OK;
 }
 
+status_t RpcState::validateParcel(const sp<RpcSession>& session, const Parcel& parcel,
+                                  std::string* errorMsg) {
+    auto* rpcFields = parcel.maybeRpcFields();
+    if (rpcFields == nullptr) {
+        *errorMsg = "Parcel not crafted for RPC call";
+        return BAD_TYPE;
+    }
+
+    if (rpcFields->mSession != session) {
+        *errorMsg = "Parcel's session doesn't match";
+        return BAD_TYPE;
+    }
+
+    uint32_t protocolVersion = session->getProtocolVersion().value();
+    if (protocolVersion < RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE &&
+        !rpcFields->mObjectPositions.empty()) {
+        *errorMsg = StringPrintf("Parcel has attached objects but the session's protocol version "
+                                 "(%" PRIu32 ") is too old, must be at least %" PRIu32,
+                                 protocolVersion,
+                                 RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE);
+        return BAD_VALUE;
+    }
+
+    if (rpcFields->mFds && !rpcFields->mFds->empty()) {
+        switch (session->getFileDescriptorTransportMode()) {
+            case RpcSession::FileDescriptorTransportMode::NONE:
+                *errorMsg =
+                        "Parcel has file descriptors, but no file descriptor transport is enabled";
+                return FDS_NOT_ALLOWED;
+            case RpcSession::FileDescriptorTransportMode::UNIX: {
+                constexpr size_t kMaxFdsPerMsg = 253;
+                if (rpcFields->mFds->size() > kMaxFdsPerMsg) {
+                    *errorMsg = StringPrintf("Too many file descriptors in Parcel for unix "
+                                             "domain socket: %zu (max is %zu)",
+                                             rpcFields->mFds->size(), kMaxFdsPerMsg);
+                    return BAD_VALUE;
+                }
+            }
+        }
+    }
+
+    return OK;
+}
+
 sp<IBinder> RpcState::tryEraseNode(std::map<uint64_t, BinderNode>::iterator& it) {
     sp<IBinder> ref;
 
diff --git a/libs/binder/RpcState.h b/libs/binder/RpcState.h
index 9cbe187..6fb2e4a 100644
--- a/libs/binder/RpcState.h
+++ b/libs/binder/RpcState.h
@@ -19,6 +19,7 @@
 #include <binder/IBinder.h>
 #include <binder/Parcel.h>
 #include <binder/RpcSession.h>
+#include <binder/RpcThreads.h>
 
 #include <map>
 #include <optional>
@@ -181,26 +182,36 @@
     [[nodiscard]] status_t rpcSend(
             const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
             const char* what, iovec* iovs, int niovs,
-            const std::optional<android::base::function_ref<status_t()>>& altPoll);
-    [[nodiscard]] status_t rpcRec(const sp<RpcSession::RpcConnection>& connection,
-                                  const sp<RpcSession>& session, const char* what, iovec* iovs,
-                                  int niovs);
+            const std::optional<android::base::function_ref<status_t()>>& altPoll,
+            const std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds =
+                    nullptr);
+    [[nodiscard]] status_t rpcRec(
+            const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+            const char* what, iovec* iovs, int niovs,
+            std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds = nullptr);
 
     [[nodiscard]] status_t waitForReply(const sp<RpcSession::RpcConnection>& connection,
                                         const sp<RpcSession>& session, Parcel* reply);
-    [[nodiscard]] status_t processCommand(const sp<RpcSession::RpcConnection>& connection,
-                                          const sp<RpcSession>& session,
-                                          const RpcWireHeader& command, CommandType type);
-    [[nodiscard]] status_t processTransact(const sp<RpcSession::RpcConnection>& connection,
-                                           const sp<RpcSession>& session,
-                                           const RpcWireHeader& command);
-    [[nodiscard]] status_t processTransactInternal(const sp<RpcSession::RpcConnection>& connection,
-                                                   const sp<RpcSession>& session,
-                                                   CommandData transactionData);
+    [[nodiscard]] status_t processCommand(
+            const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+            const RpcWireHeader& command, CommandType type,
+            std::vector<std::variant<base::unique_fd, base::borrowed_fd>>&& ancillaryFds);
+    [[nodiscard]] status_t processTransact(
+            const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+            const RpcWireHeader& command,
+            std::vector<std::variant<base::unique_fd, base::borrowed_fd>>&& ancillaryFds);
+    [[nodiscard]] status_t processTransactInternal(
+            const sp<RpcSession::RpcConnection>& connection, const sp<RpcSession>& session,
+            CommandData transactionData,
+            std::vector<std::variant<base::unique_fd, base::borrowed_fd>>&& ancillaryFds);
     [[nodiscard]] status_t processDecStrong(const sp<RpcSession::RpcConnection>& connection,
                                             const sp<RpcSession>& session,
                                             const RpcWireHeader& command);
 
+    // Whether `parcel` is compatible with `session`.
+    [[nodiscard]] static status_t validateParcel(const sp<RpcSession>& session,
+                                                 const Parcel& parcel, std::string* errorMsg);
+
     struct BinderNode {
         // Two cases:
         // A - local binder we are serving
@@ -258,7 +269,7 @@
     // false - session shutdown, halt
     [[nodiscard]] bool nodeProgressAsyncNumber(BinderNode* node);
 
-    std::mutex mNodeMutex;
+    RpcMutex mNodeMutex;
     bool mTerminated = false;
     uint32_t mNextId = 0;
     // binders known by both sides of a session
diff --git a/libs/binder/RpcTransportRaw.cpp b/libs/binder/RpcTransportRaw.cpp
index f9b73fc..7cc58cd 100644
--- a/libs/binder/RpcTransportRaw.cpp
+++ b/libs/binder/RpcTransportRaw.cpp
@@ -18,6 +18,7 @@
 #include <log/log.h>
 
 #include <poll.h>
+#include <stddef.h>
 
 #include <binder/RpcTransportRaw.h>
 
@@ -28,6 +29,9 @@
 
 namespace {
 
+// Linux kernel supports up to 253 (from SCM_MAX_FD) for unix sockets.
+constexpr size_t kMaxFdsPerMsg = 253;
+
 // RpcTransport with TLS disabled.
 class RpcTransportRaw : public RpcTransport {
 public:
@@ -85,15 +89,7 @@
 
         bool havePolled = false;
         while (true) {
-            msghdr msg{
-                    .msg_iov = iovs,
-                    // posix uses int, glibc uses size_t.  niovs is a
-                    // non-negative int and can be cast to either.
-                    .msg_iovlen = static_cast<decltype(msg.msg_iovlen)>(niovs),
-            };
-            ssize_t processSize =
-                    TEMP_FAILURE_RETRY(sendOrReceiveFun(mSocket.get(), &msg, MSG_NOSIGNAL));
-
+            ssize_t processSize = sendOrReceiveFun(iovs, niovs);
             if (processSize < 0) {
                 int savedErrno = errno;
 
@@ -145,16 +141,121 @@
 
     status_t interruptableWriteFully(
             FdTrigger* fdTrigger, iovec* iovs, int niovs,
-            const std::optional<android::base::function_ref<status_t()>>& altPoll) override {
-        return interruptableReadOrWrite(fdTrigger, iovs, niovs, sendmsg, "sendmsg", POLLOUT,
-                                        altPoll);
+            const std::optional<android::base::function_ref<status_t()>>& altPoll,
+            const std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds)
+            override {
+        bool sentFds = false;
+        auto send = [&](iovec* iovs, int niovs) -> ssize_t {
+            if (ancillaryFds != nullptr && !ancillaryFds->empty() && !sentFds) {
+                if (ancillaryFds->size() > kMaxFdsPerMsg) {
+                    // This shouldn't happen because we check the FD count in RpcState.
+                    ALOGE("Saw too many file descriptors in RpcTransportCtxRaw: %zu (max is %zu). "
+                          "Aborting session.",
+                          ancillaryFds->size(), kMaxFdsPerMsg);
+                    errno = EINVAL;
+                    return -1;
+                }
+
+                // CMSG_DATA is not necessarily aligned, so we copy the FDs into a buffer and then
+                // use memcpy.
+                int fds[kMaxFdsPerMsg];
+                for (size_t i = 0; i < ancillaryFds->size(); i++) {
+                    fds[i] = std::visit([](const auto& fd) { return fd.get(); },
+                                        ancillaryFds->at(i));
+                }
+                const size_t fdsByteSize = sizeof(int) * ancillaryFds->size();
+
+                alignas(struct cmsghdr) char msgControlBuf[CMSG_SPACE(sizeof(int) * kMaxFdsPerMsg)];
+
+                msghdr msg{
+                        .msg_iov = iovs,
+                        .msg_iovlen = static_cast<decltype(msg.msg_iovlen)>(niovs),
+                        .msg_control = msgControlBuf,
+                        .msg_controllen = sizeof(msgControlBuf),
+                };
+
+                cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
+                cmsg->cmsg_level = SOL_SOCKET;
+                cmsg->cmsg_type = SCM_RIGHTS;
+                cmsg->cmsg_len = CMSG_LEN(fdsByteSize);
+                memcpy(CMSG_DATA(cmsg), fds, fdsByteSize);
+
+                msg.msg_controllen = CMSG_SPACE(fdsByteSize);
+
+                ssize_t processedSize = TEMP_FAILURE_RETRY(
+                        sendmsg(mSocket.get(), &msg, MSG_NOSIGNAL | MSG_CMSG_CLOEXEC));
+                if (processedSize > 0) {
+                    sentFds = true;
+                }
+                return processedSize;
+            }
+
+            msghdr msg{
+                    .msg_iov = iovs,
+                    // posix uses int, glibc uses size_t.  niovs is a
+                    // non-negative int and can be cast to either.
+                    .msg_iovlen = static_cast<decltype(msg.msg_iovlen)>(niovs),
+            };
+            return TEMP_FAILURE_RETRY(sendmsg(mSocket.get(), &msg, MSG_NOSIGNAL));
+        };
+        return interruptableReadOrWrite(fdTrigger, iovs, niovs, send, "sendmsg", POLLOUT, altPoll);
     }
 
     status_t interruptableReadFully(
             FdTrigger* fdTrigger, iovec* iovs, int niovs,
-            const std::optional<android::base::function_ref<status_t()>>& altPoll) override {
-        return interruptableReadOrWrite(fdTrigger, iovs, niovs, recvmsg, "recvmsg", POLLIN,
-                                        altPoll);
+            const std::optional<android::base::function_ref<status_t()>>& altPoll,
+            std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds) override {
+        auto recv = [&](iovec* iovs, int niovs) -> ssize_t {
+            if (ancillaryFds != nullptr) {
+                int fdBuffer[kMaxFdsPerMsg];
+                alignas(struct cmsghdr) char msgControlBuf[CMSG_SPACE(sizeof(fdBuffer))];
+
+                msghdr msg{
+                        .msg_iov = iovs,
+                        .msg_iovlen = static_cast<decltype(msg.msg_iovlen)>(niovs),
+                        .msg_control = msgControlBuf,
+                        .msg_controllen = sizeof(msgControlBuf),
+                };
+                ssize_t processSize =
+                        TEMP_FAILURE_RETRY(recvmsg(mSocket.get(), &msg, MSG_NOSIGNAL));
+                if (processSize < 0) {
+                    return -1;
+                }
+
+                for (cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); cmsg != nullptr;
+                     cmsg = CMSG_NXTHDR(&msg, cmsg)) {
+                    if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
+                        // NOTE: It is tempting to reinterpret_cast, but cmsg(3) explicitly asks
+                        // application devs to memcpy the data to ensure memory alignment.
+                        size_t dataLen = cmsg->cmsg_len - CMSG_LEN(0);
+                        LOG_ALWAYS_FATAL_IF(dataLen > sizeof(fdBuffer)); // sanity check
+                        memcpy(fdBuffer, CMSG_DATA(cmsg), dataLen);
+                        size_t fdCount = dataLen / sizeof(int);
+                        ancillaryFds->reserve(ancillaryFds->size() + fdCount);
+                        for (size_t i = 0; i < fdCount; i++) {
+                            ancillaryFds->emplace_back(base::unique_fd(fdBuffer[i]));
+                        }
+                        break;
+                    }
+                }
+
+                if (msg.msg_flags & MSG_CTRUNC) {
+                    ALOGE("msg was truncated. Aborting session.");
+                    errno = EPIPE;
+                    return -1;
+                }
+
+                return processSize;
+            }
+            msghdr msg{
+                    .msg_iov = iovs,
+                    // posix uses int, glibc uses size_t.  niovs is a
+                    // non-negative int and can be cast to either.
+                    .msg_iovlen = static_cast<decltype(msg.msg_iovlen)>(niovs),
+            };
+            return TEMP_FAILURE_RETRY(recvmsg(mSocket.get(), &msg, MSG_NOSIGNAL));
+        };
+        return interruptableReadOrWrite(fdTrigger, iovs, niovs, recv, "recvmsg", POLLIN, altPoll);
     }
 
 private:
diff --git a/libs/binder/RpcTransportTls.cpp b/libs/binder/RpcTransportTls.cpp
index ad5cb0f..09b5c17 100644
--- a/libs/binder/RpcTransportTls.cpp
+++ b/libs/binder/RpcTransportTls.cpp
@@ -282,10 +282,13 @@
     status_t pollRead(void) override;
     status_t interruptableWriteFully(
             FdTrigger* fdTrigger, iovec* iovs, int niovs,
-            const std::optional<android::base::function_ref<status_t()>>& altPoll) override;
+            const std::optional<android::base::function_ref<status_t()>>& altPoll,
+            const std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds)
+            override;
     status_t interruptableReadFully(
             FdTrigger* fdTrigger, iovec* iovs, int niovs,
-            const std::optional<android::base::function_ref<status_t()>>& altPoll) override;
+            const std::optional<android::base::function_ref<status_t()>>& altPoll,
+            std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds) override;
 
 private:
     android::base::unique_fd mSocket;
@@ -313,7 +316,10 @@
 
 status_t RpcTransportTls::interruptableWriteFully(
         FdTrigger* fdTrigger, iovec* iovs, int niovs,
-        const std::optional<android::base::function_ref<status_t()>>& altPoll) {
+        const std::optional<android::base::function_ref<status_t()>>& altPoll,
+        const std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds) {
+    (void)ancillaryFds;
+
     MAYBE_WAIT_IN_FLAKE_MODE;
 
     if (niovs < 0) return BAD_VALUE;
@@ -356,7 +362,10 @@
 
 status_t RpcTransportTls::interruptableReadFully(
         FdTrigger* fdTrigger, iovec* iovs, int niovs,
-        const std::optional<android::base::function_ref<status_t()>>& altPoll) {
+        const std::optional<android::base::function_ref<status_t()>>& altPoll,
+        std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* ancillaryFds) {
+    (void)ancillaryFds;
+
     MAYBE_WAIT_IN_FLAKE_MODE;
 
     if (niovs < 0) return BAD_VALUE;
diff --git a/libs/binder/RpcWireFormat.h b/libs/binder/RpcWireFormat.h
index 7e2aa79..ff1b01a 100644
--- a/libs/binder/RpcWireFormat.h
+++ b/libs/binder/RpcWireFormat.h
@@ -45,7 +45,8 @@
 struct RpcConnectionHeader {
     uint32_t version; // maximum supported by caller
     uint8_t options;
-    uint8_t reservered[9];
+    uint8_t fileDescriptorTransportMode;
+    uint8_t reservered[8];
     // Follows is sessionIdSize bytes.
     // if size is 0, this is requesting a new session.
     uint16_t sessionIdSize;
@@ -108,6 +109,10 @@
 
 // serialization is like:
 // |RpcWireHeader|struct desginated by 'command'| (over and over again)
+//
+// When file descriptors are included in out-of-band data (e.g. in unix domain
+// sockets), they are always paired with the RpcWireHeader bytes of the
+// transaction or reply the file descriptors belong to.
 
 struct RpcWireHeader {
     uint32_t command; // RPC_COMMAND_*
diff --git a/libs/binder/TEST_MAPPING b/libs/binder/TEST_MAPPING
index 0232f50..c91d56c 100644
--- a/libs/binder/TEST_MAPPING
+++ b/libs/binder/TEST_MAPPING
@@ -28,9 +28,6 @@
       "name": "binderLibTest"
     },
     {
-      "name": "binderRpcTest"
-    },
-    {
       "name": "binderStabilityTest"
     },
     {
@@ -84,7 +81,21 @@
       "name": "rustBinderSerializationTest"
     }
   ],
- "hwasan-presubmit": [
+  "presubmit-large": [
+    {
+      "name": "binderRpcTest"
+    },
+    {
+      "name": "binderRpcTestNoKernel"
+    },
+    {
+      "name": "binderRpcTestSingleThreaded"
+    },
+    {
+      "name": "binderRpcTestSingleThreadedNoKernel"
+    }
+  ],
+  "hwasan-presubmit": [
     {
       "name": "binderLibTest"
     }
diff --git a/libs/binder/Utils.cpp b/libs/binder/Utils.cpp
index b0289a7..0314b0f 100644
--- a/libs/binder/Utils.cpp
+++ b/libs/binder/Utils.cpp
@@ -16,40 +16,12 @@
 
 #include "Utils.h"
 
-#include <android-base/file.h>
 #include <string.h>
 
-using android::base::ErrnoError;
-using android::base::Result;
-
 namespace android {
 
 void zeroMemory(uint8_t* data, size_t size) {
     memset(data, 0, size);
 }
 
-Result<void> setNonBlocking(android::base::borrowed_fd fd) {
-    int flags = TEMP_FAILURE_RETRY(fcntl(fd.get(), F_GETFL));
-    if (flags == -1) {
-        return ErrnoError() << "Could not get flags for fd";
-    }
-    if (int ret = TEMP_FAILURE_RETRY(fcntl(fd.get(), F_SETFL, flags | O_NONBLOCK)); ret == -1) {
-        return ErrnoError() << "Could not set non-blocking flag for fd";
-    }
-    return {};
-}
-
-status_t getRandomBytes(uint8_t* data, size_t size) {
-    int ret = TEMP_FAILURE_RETRY(open("/dev/urandom", O_RDONLY | O_CLOEXEC | O_NOFOLLOW));
-    if (ret == -1) {
-        return -errno;
-    }
-
-    base::unique_fd fd(ret);
-    if (!base::ReadFully(fd, data, size)) {
-        return -errno;
-    }
-    return OK;
-}
-
 } // namespace android
diff --git a/libs/binder/Utils.h b/libs/binder/Utils.h
index 7dcb70e..7c6d6f1 100644
--- a/libs/binder/Utils.h
+++ b/libs/binder/Utils.h
@@ -15,11 +15,10 @@
  */
 
 #include <stddef.h>
+#include <sys/uio.h>
 #include <cstdint>
 #include <optional>
 
-#include <android-base/result.h>
-#include <android-base/unique_fd.h>
 #include <log/log.h>
 #include <utils/Errors.h>
 
@@ -36,10 +35,6 @@
 // avoid optimizations
 void zeroMemory(uint8_t* data, size_t size);
 
-android::base::Result<void> setNonBlocking(android::base::borrowed_fd fd);
-
-status_t getRandomBytes(uint8_t* data, size_t size);
-
 // View of contiguous sequence. Similar to std::span.
 template <typename T>
 struct Span {
@@ -60,6 +55,17 @@
         size = offset;
         return rest;
     }
+
+    // Returns nullopt if the byte size of `this` isn't evenly divisible by sizeof(U).
+    template <typename U>
+    std::optional<Span<U>> reinterpret() const {
+        // Only allow casting from bytes for simplicity.
+        static_assert(std::is_same_v<std::remove_const_t<T>, uint8_t>);
+        if (size % sizeof(U) != 0) {
+            return std::nullopt;
+        }
+        return Span<U>{reinterpret_cast<U*>(data), size / sizeof(U)};
+    }
 };
 
 }   // namespace android
diff --git a/libs/binder/include/binder/IInterface.h b/libs/binder/include/binder/IInterface.h
index 1576c94..dc572ac 100644
--- a/libs/binder/include/binder/IInterface.h
+++ b/libs/binder/include/binder/IInterface.h
@@ -72,9 +72,9 @@
 public:
     virtual sp<IInterface>      queryLocalInterface(const String16& _descriptor);
     virtual const String16&     getInterfaceDescriptor() const;
+    typedef INTERFACE BaseInterface;
 
 protected:
-    typedef INTERFACE           BaseInterface;
     virtual IBinder*            onAsBinder();
 };
 
@@ -85,9 +85,9 @@
 {
 public:
     explicit                    BpInterface(const sp<IBinder>& remote);
+    typedef INTERFACE BaseInterface;
 
 protected:
-    typedef INTERFACE           BaseInterface;
     virtual IBinder*            onAsBinder();
 };
 
diff --git a/libs/binder/include/binder/IPCThreadState.h b/libs/binder/include/binder/IPCThreadState.h
index cd6a274..8ce3bc9 100644
--- a/libs/binder/include/binder/IPCThreadState.h
+++ b/libs/binder/include/binder/IPCThreadState.h
@@ -28,6 +28,10 @@
 // ---------------------------------------------------------------------------
 namespace android {
 
+/**
+ * Kernel binder thread state. All operations here refer to kernel binder. This
+ * object is allocated per-thread.
+ */
 class IPCThreadState
 {
 public:
diff --git a/libs/binder/include/binder/Parcel.h b/libs/binder/include/binder/Parcel.h
index 0345a5d..91febbd 100644
--- a/libs/binder/include/binder/Parcel.h
+++ b/libs/binder/include/binder/Parcel.h
@@ -608,8 +608,12 @@
     size_t              ipcObjectsCount() const;
     void ipcSetDataReference(const uint8_t* data, size_t dataSize, const binder_size_t* objects,
                              size_t objectsCount, release_func relFunc);
-    void rpcSetDataReference(const sp<RpcSession>& session, const uint8_t* data, size_t dataSize,
-                             release_func relFunc);
+    // Takes ownership even when an error is returned.
+    status_t rpcSetDataReference(
+            const sp<RpcSession>& session, const uint8_t* data, size_t dataSize,
+            const uint32_t* objectTable, size_t objectTableSize,
+            std::vector<std::variant<base::unique_fd, base::borrowed_fd>>&& ancillaryFds,
+            release_func relFunc);
 
     status_t            finishWrite(size_t len);
     void                releaseObjects();
@@ -620,6 +624,7 @@
     status_t            restartWrite(size_t desired);
     // Set the capacity to `desired`, truncating the Parcel if necessary.
     status_t            continueWrite(size_t desired);
+    status_t truncateRpcObjects(size_t newObjectsSize);
     status_t            writePointer(uintptr_t val);
     status_t            readPointer(uintptr_t *pArg) const;
     uintptr_t           readPointer() const;
@@ -1179,10 +1184,20 @@
         c->clear(); // must clear before resizing/reserving otherwise move ctors may be called.
         if constexpr (is_pointer_equivalent_array_v<T>) {
             // could consider POD without gaps and alignment of 4.
-            auto data = reinterpret_cast<const T*>(
-                    readInplace(static_cast<size_t>(size) * sizeof(T)));
+            size_t dataLen;
+            if (__builtin_mul_overflow(size, sizeof(T), &dataLen)) {
+                return -EOVERFLOW;
+            }
+            auto data = reinterpret_cast<const T*>(readInplace(dataLen));
             if (data == nullptr) return BAD_VALUE;
-            c->insert(c->begin(), data, data + size); // insert should do a reserve().
+            // std::vector::insert and similar methods will require type-dependent
+            // byte alignment when inserting from a const iterator such as `data`,
+            // e.g. 8 byte alignment for int64_t, and so will not work if `data`
+            // is 4 byte aligned (which is all Parcel guarantees). Copying
+            // the contents into the vector directly, where possible, circumvents
+            // this.
+            c->resize(size);
+            memcpy(c->data(), data, dataLen);
         } else if constexpr (std::is_same_v<T, bool>
                 || std::is_same_v<T, char16_t>) {
             c->reserve(size); // avoids default initialization
@@ -1279,6 +1294,23 @@
 
         // Should always be non-null.
         const sp<RpcSession> mSession;
+
+        enum ObjectType : int32_t {
+            TYPE_BINDER_NULL = 0,
+            TYPE_BINDER = 1,
+            // FD to be passed via native transport (Trusty IPC or UNIX domain socket).
+            TYPE_NATIVE_FILE_DESCRIPTOR = 2,
+        };
+
+        // Sorted.
+        std::vector<uint32_t> mObjectPositions;
+
+        // File descriptors referenced by the parcel data. Should be indexed
+        // using the offsets in the parcel data. Don't assume the list is in the
+        // same order as `mObjectPositions`.
+        //
+        // Boxed to save space. Lazy allocated.
+        std::unique_ptr<std::vector<std::variant<base::unique_fd, base::borrowed_fd>>> mFds;
     };
     std::variant<KernelFields, RpcFields> mVariantFields;
 
diff --git a/libs/binder/include/binder/ProcessState.h b/libs/binder/include/binder/ProcessState.h
index e17a76c..9679a5f 100644
--- a/libs/binder/include/binder/ProcessState.h
+++ b/libs/binder/include/binder/ProcessState.h
@@ -29,6 +29,10 @@
 
 class IPCThreadState;
 
+/**
+ * Kernel binder process state. All operations here refer to kernel binder. This
+ * object is allocated per process.
+ */
 class ProcessState : public virtual RefBase {
 public:
     static sp<ProcessState> self();
@@ -126,7 +130,7 @@
     void* mVMStart;
 
     // Protects thread count and wait variables below.
-    pthread_mutex_t mThreadCountLock;
+    mutable pthread_mutex_t mThreadCountLock;
     // Broadcast whenever mWaitingForThreads > 0
     pthread_cond_t mThreadCountDecrement;
     // Number of binder threads current executing a command.
diff --git a/libs/binder/include/binder/RpcServer.h b/libs/binder/include/binder/RpcServer.h
index dba8dd6..9318c27 100644
--- a/libs/binder/include/binder/RpcServer.h
+++ b/libs/binder/include/binder/RpcServer.h
@@ -18,6 +18,7 @@
 #include <android-base/unique_fd.h>
 #include <binder/IBinder.h>
 #include <binder/RpcSession.h>
+#include <binder/RpcThreads.h>
 #include <binder/RpcTransport.h>
 #include <utils/Errors.h>
 #include <utils/RefBase.h>
@@ -114,6 +115,15 @@
     void setProtocolVersion(uint32_t version);
 
     /**
+     * Set the supported transports for sending and receiving file descriptors.
+     *
+     * Clients will propose a mode when connecting. If the mode is not in the
+     * provided list, the connection will be rejected.
+     */
+    void setSupportedFileDescriptorTransportModes(
+            const std::vector<RpcSession::FileDescriptorTransportMode>& modes);
+
+    /**
      * The root object can be retrieved by any client, without any
      * authentication. TODO(b/183988761)
      *
@@ -193,18 +203,22 @@
     const std::unique_ptr<RpcTransportCtx> mCtx;
     size_t mMaxThreads = 1;
     std::optional<uint32_t> mProtocolVersion;
+    // A mode is supported if the N'th bit is on, where N is the mode enum's value.
+    std::bitset<8> mSupportedFileDescriptorTransportModes = std::bitset<8>().set(
+            static_cast<size_t>(RpcSession::FileDescriptorTransportMode::NONE));
     base::unique_fd mServer; // socket we are accepting sessions on
 
-    std::mutex mLock; // for below
-    std::unique_ptr<std::thread> mJoinThread;
+    RpcMutex mLock; // for below
+    std::unique_ptr<RpcMaybeThread> mJoinThread;
     bool mJoinThreadRunning = false;
-    std::map<std::thread::id, std::thread> mConnectingThreads;
+    std::map<RpcMaybeThread::id, RpcMaybeThread> mConnectingThreads;
+
     sp<IBinder> mRootObject;
     wp<IBinder> mRootObjectWeak;
     std::function<sp<IBinder>(const void*, size_t)> mRootObjectFactory;
     std::map<std::vector<uint8_t>, sp<RpcSession>> mSessions;
     std::unique_ptr<FdTrigger> mShutdownTrigger;
-    std::condition_variable mShutdownCv;
+    RpcConditionVariable mShutdownCv;
 };
 
 } // namespace android
diff --git a/libs/binder/include/binder/RpcSession.h b/libs/binder/include/binder/RpcSession.h
index e76b140..a2b28db 100644
--- a/libs/binder/include/binder/RpcSession.h
+++ b/libs/binder/include/binder/RpcSession.h
@@ -18,13 +18,13 @@
 #include <android-base/threads.h>
 #include <android-base/unique_fd.h>
 #include <binder/IBinder.h>
+#include <binder/RpcThreads.h>
 #include <binder/RpcTransport.h>
 #include <utils/Errors.h>
 #include <utils/RefBase.h>
 
 #include <map>
 #include <optional>
-#include <thread>
 #include <vector>
 
 namespace android {
@@ -95,6 +95,18 @@
     [[nodiscard]] bool setProtocolVersion(uint32_t version);
     std::optional<uint32_t> getProtocolVersion();
 
+    enum class FileDescriptorTransportMode : uint8_t {
+        NONE = 0,
+        // Send file descriptors via unix domain socket ancillary data.
+        UNIX = 1,
+    };
+
+    /**
+     * Set the transport for sending and receiving file descriptors.
+     */
+    void setFileDescriptorTransportMode(FileDescriptorTransportMode mode);
+    FileDescriptorTransportMode getFileDescriptorTransportMode();
+
     /**
      * This should be called once per thread, matching 'join' in the remote
      * process.
@@ -206,10 +218,10 @@
     public:
         void onSessionAllIncomingThreadsEnded(const sp<RpcSession>& session) override;
         void onSessionIncomingThreadEnded() override;
-        void waitForShutdown(std::unique_lock<std::mutex>& lock, const sp<RpcSession>& session);
+        void waitForShutdown(RpcMutexUniqueLock& lock, const sp<RpcSession>& session);
 
     private:
-        std::condition_variable mCv;
+        RpcConditionVariable mCv;
     };
     friend WaitForShutdownListener;
 
@@ -232,7 +244,7 @@
     //
     // transfer ownership of thread (usually done while a lock is taken on the
     // structure which originally owns the thread)
-    void preJoinThreadOwnership(std::thread thread);
+    void preJoinThreadOwnership(RpcMaybeThread thread);
     // pass FD to thread and read initial connection information
     struct PreJoinSetupResult {
         // Server connection object associated with this
@@ -264,6 +276,7 @@
     sp<RpcConnection> assignIncomingConnectionToThisThread(
             std::unique_ptr<RpcTransport> rpcTransport);
     [[nodiscard]] bool removeIncomingConnection(const sp<RpcConnection>& connection);
+    void clearConnectionTid(const sp<RpcConnection>& connection);
 
     [[nodiscard]] status_t initShutdownTrigger();
 
@@ -313,7 +326,7 @@
     // For a more complicated case, the client might itself open up a thread to
     // serve calls to the server at all times (e.g. if it hosts a callback)
 
-    wp<RpcServer> mForServer; // maybe null, for client sessions
+    wp<RpcServer> mForServer;                      // maybe null, for client sessions
     sp<WaitForShutdownListener> mShutdownListener; // used for client sessions
     wp<EventListener> mEventListener; // mForServer if server, mShutdownListener if client
 
@@ -327,13 +340,14 @@
 
     std::unique_ptr<RpcState> mRpcBinderState;
 
-    std::mutex mMutex; // for all below
+    RpcMutex mMutex; // for all below
 
     size_t mMaxIncomingThreads = 0;
     size_t mMaxOutgoingThreads = kDefaultMaxOutgoingThreads;
     std::optional<uint32_t> mProtocolVersion;
+    FileDescriptorTransportMode mFileDescriptorTransportMode = FileDescriptorTransportMode::NONE;
 
-    std::condition_variable mAvailableConnectionCv; // for mWaitingThreads
+    RpcConditionVariable mAvailableConnectionCv; // for mWaitingThreads
 
     struct ThreadState {
         size_t mWaitingThreads = 0;
@@ -342,7 +356,7 @@
         std::vector<sp<RpcConnection>> mOutgoing;
         size_t mMaxIncoming = 0;
         std::vector<sp<RpcConnection>> mIncoming;
-        std::map<std::thread::id, std::thread> mThreads;
+        std::map<RpcMaybeThread::id, RpcMaybeThread> mThreads;
     } mConnections;
 };
 
diff --git a/libs/binder/include/binder/RpcThreads.h b/libs/binder/include/binder/RpcThreads.h
new file mode 100644
index 0000000..8abf04e
--- /dev/null
+++ b/libs/binder/include/binder/RpcThreads.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <pthread.h>
+
+#include <android-base/threads.h>
+
+#include <functional>
+#include <memory>
+#include <thread>
+
+namespace android {
+
+#ifdef BINDER_RPC_SINGLE_THREADED
+class RpcMutex {
+public:
+    void lock() {}
+    void unlock() {}
+};
+
+class RpcMutexUniqueLock {
+public:
+    RpcMutexUniqueLock(RpcMutex&) {}
+    void unlock() {}
+};
+
+class RpcMutexLockGuard {
+public:
+    RpcMutexLockGuard(RpcMutex&) {}
+};
+
+class RpcConditionVariable {
+public:
+    void notify_one() {}
+    void notify_all() {}
+
+    void wait(RpcMutexUniqueLock&) {}
+
+    template <typename Predicate>
+    void wait(RpcMutexUniqueLock&, Predicate stop_waiting) {
+        LOG_ALWAYS_FATAL_IF(!stop_waiting(), "RpcConditionVariable::wait condition not met");
+    }
+
+    template <typename Duration>
+    std::cv_status wait_for(RpcMutexUniqueLock&, const Duration&) {
+        return std::cv_status::no_timeout;
+    }
+
+    template <typename Duration, typename Predicate>
+    bool wait_for(RpcMutexUniqueLock&, const Duration&, Predicate stop_waiting) {
+        return stop_waiting();
+    }
+};
+
+class RpcMaybeThread {
+public:
+    RpcMaybeThread() = default;
+
+    template <typename Function, typename... Args>
+    RpcMaybeThread(Function&& f, Args&&... args) {
+        // std::function requires a copy-constructible closure,
+        // so we need to wrap both the function and its arguments
+        // in a shared pointer that std::function can copy internally
+        struct Vars {
+            std::decay_t<Function> f;
+            std::tuple<std::decay_t<Args>...> args;
+
+            explicit Vars(Function&& f, Args&&... args)
+                  : f(std::move(f)), args(std::move(args)...) {}
+        };
+        auto vars = std::make_shared<Vars>(std::forward<Function>(f), std::forward<Args>(args)...);
+        mFunc = [vars]() { std::apply(std::move(vars->f), std::move(vars->args)); };
+    }
+
+    void join() {
+        if (mFunc) {
+            // Move mFunc into a temporary so we can clear mFunc before
+            // executing the callback. This avoids infinite recursion if
+            // the callee then calls join() again directly or indirectly.
+            decltype(mFunc) func = nullptr;
+            mFunc.swap(func);
+            func();
+        }
+    }
+    void detach() { join(); }
+
+    class id {
+    public:
+        bool operator==(const id&) const { return true; }
+        bool operator!=(const id&) const { return false; }
+        bool operator<(const id&) const { return false; }
+        bool operator<=(const id&) const { return true; }
+        bool operator>(const id&) const { return false; }
+        bool operator>=(const id&) const { return true; }
+    };
+
+    id get_id() const { return id(); }
+
+private:
+    std::function<void(void)> mFunc;
+};
+
+namespace rpc_this_thread {
+static inline RpcMaybeThread::id get_id() {
+    return RpcMaybeThread::id();
+}
+} // namespace rpc_this_thread
+
+static inline uint64_t rpcGetThreadId() {
+    return 0;
+}
+
+static inline void rpcJoinIfSingleThreaded(RpcMaybeThread& t) {
+    t.join();
+}
+#else  // BINDER_RPC_SINGLE_THREADED
+using RpcMutex = std::mutex;
+using RpcMutexUniqueLock = std::unique_lock<std::mutex>;
+using RpcMutexLockGuard = std::lock_guard<std::mutex>;
+using RpcConditionVariable = std::condition_variable;
+using RpcMaybeThread = std::thread;
+namespace rpc_this_thread = std::this_thread;
+
+static inline uint64_t rpcGetThreadId() {
+    return base::GetThreadId();
+}
+
+static inline void rpcJoinIfSingleThreaded(RpcMaybeThread&) {}
+#endif // BINDER_RPC_SINGLE_THREADED
+
+} // namespace android
diff --git a/libs/binder/include/binder/RpcTransport.h b/libs/binder/include/binder/RpcTransport.h
index ee4b548..5197ef9 100644
--- a/libs/binder/include/binder/RpcTransport.h
+++ b/libs/binder/include/binder/RpcTransport.h
@@ -22,6 +22,8 @@
 #include <memory>
 #include <optional>
 #include <string>
+#include <variant>
+#include <vector>
 
 #include <android-base/function_ref.h>
 #include <android-base/unique_fd.h>
@@ -61,16 +63,23 @@
      * to read/write data. If this returns an error, that error is returned from
      * this function.
      *
+     * ancillaryFds - FDs to be sent via UNIX domain dockets or Trusty IPC. When
+     * reading, if `ancillaryFds` is null, any received FDs will be silently
+     * dropped and closed (by the OS). Appended values will always be unique_fd,
+     * the variant type is used to avoid extra copies elsewhere.
+     *
      * Return:
      *   OK - succeeded in completely processing 'size'
      *   error - interrupted (failure or trigger)
      */
     [[nodiscard]] virtual status_t interruptableWriteFully(
             FdTrigger *fdTrigger, iovec *iovs, int niovs,
-            const std::optional<android::base::function_ref<status_t()>> &altPoll) = 0;
+            const std::optional<android::base::function_ref<status_t()>> &altPoll,
+            const std::vector<std::variant<base::unique_fd, base::borrowed_fd>> *ancillaryFds) = 0;
     [[nodiscard]] virtual status_t interruptableReadFully(
             FdTrigger *fdTrigger, iovec *iovs, int niovs,
-            const std::optional<android::base::function_ref<status_t()>> &altPoll) = 0;
+            const std::optional<android::base::function_ref<status_t()>> &altPoll,
+            std::vector<std::variant<base::unique_fd, base::borrowed_fd>> *ancillaryFds) = 0;
 
 protected:
     RpcTransport() = default;
diff --git a/libs/binder/ndk/libbinder_ndk.map.txt b/libs/binder/ndk/libbinder_ndk.map.txt
index 3824a1b..f3f2886 100644
--- a/libs/binder/ndk/libbinder_ndk.map.txt
+++ b/libs/binder/ndk/libbinder_ndk.map.txt
@@ -146,8 +146,8 @@
     AIBinder_Class_disableInterfaceTokenHeader;
     AIBinder_DeathRecipient_setOnUnlinked;
     AIBinder_isHandlingTransaction;
-    AIBinder_setInheritRt; # llndk
-    AIBinder_setMinSchedulerPolicy; # llndk
+    AIBinder_setInheritRt; # apex llndk
+    AIBinder_setMinSchedulerPolicy; # apex llndk
     AParcel_marshal;
     AParcel_unmarshal;
 };
diff --git a/libs/binder/tests/Android.bp b/libs/binder/tests/Android.bp
index 2f96d0e..d7c6d49 100644
--- a/libs/binder/tests/Android.bp
+++ b/libs/binder/tests/Android.bp
@@ -141,6 +141,7 @@
     unstable: true,
     srcs: [
         "BinderRpcTestClientInfo.aidl",
+        "BinderRpcTestServerConfig.aidl",
         "BinderRpcTestServerInfo.aidl",
         "IBinderRpcCallback.aidl",
         "IBinderRpcSession.aidl",
@@ -167,7 +168,6 @@
         "libbinder_tls_shared_deps",
     ],
     shared_libs: [
-        "libbinder",
         "libbase",
         "liblog",
     ],
@@ -185,25 +185,72 @@
     ],
 }
 
-cc_test {
-    name: "binderRpcTest",
+cc_defaults {
+    name: "binderRpcTest_common_defaults",
     host_supported: true,
     target: {
         darwin: {
             enabled: false,
         },
+    },
+    defaults: [
+        "binder_test_defaults",
+    ],
+
+    static_libs: [
+        "libbinder_tls_static",
+        "libbinder_tls_test_utils",
+        "binderRpcTestIface-cpp",
+        "binderRpcTestIface-ndk",
+    ],
+}
+
+cc_defaults {
+    name: "binderRpcTest_service_defaults",
+    defaults: [
+        "binderRpcTest_common_defaults",
+    ],
+    gtest: false,
+    auto_gen_config: false,
+    srcs: [
+        "binderRpcTestCommon.cpp",
+        "binderRpcTestService.cpp",
+    ],
+}
+
+cc_defaults {
+    name: "binderRpcTest_defaults",
+    target: {
         android: {
             test_suites: ["vts"],
         },
     },
     defaults: [
-        "binder_test_defaults",
-        "libbinder_tls_shared_deps",
+        "binderRpcTest_common_defaults",
     ],
 
     srcs: [
         "binderRpcTest.cpp",
+        "binderRpcTestCommon.cpp",
     ],
+
+    test_suites: ["general-tests"],
+    require_root: true,
+
+    data_bins: [
+        "binder_rpc_test_service",
+        "binder_rpc_test_service_no_kernel",
+        "binder_rpc_test_service_single_threaded",
+        "binder_rpc_test_service_single_threaded_no_kernel",
+    ],
+}
+
+cc_defaults {
+    name: "binderRpcTest_shared_defaults",
+    cflags: [
+        "-DBINDER_WITH_KERNEL_IPC",
+    ],
+
     shared_libs: [
         "libbinder",
         "libbinder_ndk",
@@ -212,14 +259,128 @@
         "libcutils",
         "liblog",
     ],
-    static_libs: [
-        "libbinder_tls_static",
-        "libbinder_tls_test_utils",
-        "binderRpcTestIface-cpp",
-        "binderRpcTestIface-ndk",
+}
+
+cc_defaults {
+    name: "binderRpcTest_static_defaults",
+
+    shared_libs: [
+        "libutils",
+        // libcrypto_static is not visible to this module
+        "libcrypto",
     ],
-    test_suites: ["general-tests"],
-    require_root: true,
+    static_libs: [
+        "libbase",
+        "libcutils",
+        "liblog",
+        "libssl",
+    ],
+
+    cflags: [
+        // Disable tests that require shared libraries,
+        // e.g., libbinder.so or libbinder_ndk.so
+        "-DBINDER_TEST_NO_SHARED_LIBS",
+    ],
+}
+
+cc_test {
+    // The module name cannot start with "binderRpcTest" because
+    // then atest tries to execute it as part of binderRpcTest
+    name: "binder_rpc_test_service",
+    defaults: [
+        "binderRpcTest_service_defaults",
+        "binderRpcTest_shared_defaults",
+        "libbinder_tls_shared_deps",
+    ],
+}
+
+cc_test {
+    name: "binder_rpc_test_service_no_kernel",
+    defaults: [
+        "binderRpcTest_service_defaults",
+        "binderRpcTest_static_defaults",
+    ],
+    static_libs: [
+        "libbinder_rpc_no_kernel",
+    ],
+}
+
+cc_test {
+    name: "binder_rpc_test_service_single_threaded",
+    defaults: [
+        "binderRpcTest_service_defaults",
+        "binderRpcTest_static_defaults",
+    ],
+    cflags: [
+        "-DBINDER_RPC_SINGLE_THREADED",
+        "-DBINDER_WITH_KERNEL_IPC",
+    ],
+    static_libs: [
+        "libbinder_rpc_single_threaded",
+    ],
+}
+
+cc_test {
+    name: "binder_rpc_test_service_single_threaded_no_kernel",
+    defaults: [
+        "binderRpcTest_service_defaults",
+        "binderRpcTest_static_defaults",
+    ],
+    cflags: [
+        "-DBINDER_RPC_SINGLE_THREADED",
+    ],
+    static_libs: [
+        "libbinder_rpc_single_threaded_no_kernel",
+    ],
+}
+
+cc_test {
+    name: "binderRpcTest",
+    defaults: [
+        "binderRpcTest_defaults",
+        "binderRpcTest_shared_defaults",
+        "libbinder_tls_shared_deps",
+    ],
+}
+
+cc_test {
+    name: "binderRpcTestNoKernel",
+    defaults: [
+        "binderRpcTest_defaults",
+        "binderRpcTest_static_defaults",
+    ],
+    static_libs: [
+        "libbinder_rpc_no_kernel",
+    ],
+}
+
+cc_test {
+    name: "binderRpcTestSingleThreaded",
+    defaults: [
+        "binderRpcTest_defaults",
+        "binderRpcTest_static_defaults",
+    ],
+    cflags: [
+        "-DBINDER_RPC_SINGLE_THREADED",
+        "-DBINDER_WITH_KERNEL_IPC",
+    ],
+    static_libs: [
+        "libbinder_rpc_single_threaded",
+    ],
+}
+
+cc_test {
+    name: "binderRpcTestSingleThreadedNoKernel",
+    defaults: [
+        "binderRpcTest_defaults",
+        "binderRpcTest_static_defaults",
+    ],
+    cflags: [
+        "-DBINDER_RPC_SINGLE_THREADED",
+    ],
+    static_libs: [
+        "libbinder_rpc_single_threaded_no_kernel",
+    ],
 }
 
 cc_test {
diff --git a/libs/binder/tests/BinderRpcTestServerConfig.aidl b/libs/binder/tests/BinderRpcTestServerConfig.aidl
new file mode 100644
index 0000000..34d74be
--- /dev/null
+++ b/libs/binder/tests/BinderRpcTestServerConfig.aidl
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+parcelable BinderRpcTestServerConfig {
+    int numThreads;
+    int[] serverSupportedFileDescriptorTransportModes;
+    int socketType;
+    int rpcSecurity;
+    int serverVersion;
+    int vsockPort;
+    @utf8InCpp String addr;
+}
diff --git a/libs/binder/tests/IBinderRpcTest.aidl b/libs/binder/tests/IBinderRpcTest.aidl
index fdd02a4..b15a225 100644
--- a/libs/binder/tests/IBinderRpcTest.aidl
+++ b/libs/binder/tests/IBinderRpcTest.aidl
@@ -24,6 +24,9 @@
     // number of known RPC binders to process, RpcState::countBinders by session
     int[] countBinders();
 
+    // Return a null binder with a non-nullable return type.
+    IBinder getNullBinder();
+
     // Caller sends server, callee pings caller's server and returns error code.
     int pingMe(IBinder binder);
     @nullable IBinder repeatBinder(@nullable IBinder binder);
@@ -64,4 +67,8 @@
     void scheduleShutdown();
 
     void useKernelBinderCallingId();
+
+    ParcelFileDescriptor echoAsFile(@utf8InCpp String content);
+
+    ParcelFileDescriptor concatFiles(in List<ParcelFileDescriptor> files);
 }
diff --git a/libs/binder/tests/binderRpcTest.cpp b/libs/binder/tests/binderRpcTest.cpp
index 5161469..fca3c29 100644
--- a/libs/binder/tests/binderRpcTest.cpp
+++ b/libs/binder/tests/binderRpcTest.cpp
@@ -14,29 +14,7 @@
  * limitations under the License.
  */
 
-#include <BinderRpcTestClientInfo.h>
-#include <BinderRpcTestServerInfo.h>
-#include <BnBinderRpcCallback.h>
-#include <BnBinderRpcSession.h>
-#include <BnBinderRpcTest.h>
-#include <aidl/IBinderRpcTest.h>
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/properties.h>
-#include <android/binder_auto_utils.h>
-#include <android/binder_libbinder.h>
-#include <binder/Binder.h>
-#include <binder/BpBinder.h>
-#include <binder/IPCThreadState.h>
-#include <binder/IServiceManager.h>
-#include <binder/ProcessState.h>
-#include <binder/RpcServer.h>
-#include <binder/RpcSession.h>
-#include <binder/RpcTlsTestUtils.h>
-#include <binder/RpcTlsUtils.h>
-#include <binder/RpcTransport.h>
-#include <binder/RpcTransportRaw.h>
-#include <binder/RpcTransportTls.h>
+#include <android-base/stringprintf.h>
 #include <gtest/gtest.h>
 
 #include <chrono>
@@ -45,14 +23,12 @@
 #include <thread>
 #include <type_traits>
 
+#include <dlfcn.h>
 #include <poll.h>
 #include <sys/prctl.h>
-#include <unistd.h>
+#include <sys/socket.h>
 
-#include "../FdTrigger.h"
-#include "../RpcSocketAddress.h" // for testing preconnected clients
-#include "../RpcState.h"         // for debugging
-#include "../vm_sockets.h"       // for VMADDR_*
+#include "binderRpcTestCommon.h"
 
 using namespace std::chrono_literals;
 using namespace std::placeholders;
@@ -62,35 +38,14 @@
 
 namespace android {
 
+#ifdef BINDER_TEST_NO_SHARED_LIBS
+constexpr bool kEnableSharedLibs = false;
+#else
+constexpr bool kEnableSharedLibs = true;
+#endif
+
 static_assert(RPC_WIRE_PROTOCOL_VERSION + 1 == RPC_WIRE_PROTOCOL_VERSION_NEXT ||
               RPC_WIRE_PROTOCOL_VERSION == RPC_WIRE_PROTOCOL_VERSION_EXPERIMENTAL);
-const char* kLocalInetAddress = "127.0.0.1";
-
-enum class RpcSecurity { RAW, TLS };
-
-static inline std::vector<RpcSecurity> RpcSecurityValues() {
-    return {RpcSecurity::RAW, RpcSecurity::TLS};
-}
-
-static inline std::unique_ptr<RpcTransportCtxFactory> newFactory(
-        RpcSecurity rpcSecurity, std::shared_ptr<RpcCertificateVerifier> verifier = nullptr,
-        std::unique_ptr<RpcAuth> auth = nullptr) {
-    switch (rpcSecurity) {
-        case RpcSecurity::RAW:
-            return RpcTransportCtxFactoryRaw::make();
-        case RpcSecurity::TLS: {
-            if (verifier == nullptr) {
-                verifier = std::make_shared<RpcCertificateVerifierSimple>();
-            }
-            if (auth == nullptr) {
-                auth = std::make_unique<RpcAuthSelfSigned>();
-            }
-            return RpcTransportCtxFactoryTls::make(std::move(verifier), std::move(auth));
-        }
-        default:
-            LOG_ALWAYS_FATAL("Unknown RpcSecurity %d", rpcSecurity);
-    }
-}
 
 TEST(BinderRpcParcel, EntireParcelFormatted) {
     Parcel p;
@@ -141,191 +96,15 @@
         EXPECT_TRUE(stat.isOk()) << stat; \
     } while (false)
 
-class MyBinderRpcSession : public BnBinderRpcSession {
-public:
-    static std::atomic<int32_t> gNum;
-
-    MyBinderRpcSession(const std::string& name) : mName(name) { gNum++; }
-    Status getName(std::string* name) override {
-        *name = mName;
-        return Status::ok();
+static std::string WaitStatusToString(int wstatus) {
+    if (WIFEXITED(wstatus)) {
+        return base::StringPrintf("exit status %d", WEXITSTATUS(wstatus));
     }
-    ~MyBinderRpcSession() { gNum--; }
-
-private:
-    std::string mName;
-};
-std::atomic<int32_t> MyBinderRpcSession::gNum;
-
-class MyBinderRpcCallback : public BnBinderRpcCallback {
-    Status sendCallback(const std::string& value) {
-        std::unique_lock _l(mMutex);
-        mValues.push_back(value);
-        _l.unlock();
-        mCv.notify_one();
-        return Status::ok();
+    if (WIFSIGNALED(wstatus)) {
+        return base::StringPrintf("term signal %d", WTERMSIG(wstatus));
     }
-    Status sendOnewayCallback(const std::string& value) { return sendCallback(value); }
-
-public:
-    std::mutex mMutex;
-    std::condition_variable mCv;
-    std::vector<std::string> mValues;
-};
-
-class MyBinderRpcTest : public BnBinderRpcTest {
-public:
-    wp<RpcServer> server;
-    int port = 0;
-
-    Status sendString(const std::string& str) override {
-        (void)str;
-        return Status::ok();
-    }
-    Status doubleString(const std::string& str, std::string* strstr) override {
-        *strstr = str + str;
-        return Status::ok();
-    }
-    Status getClientPort(int* out) override {
-        *out = port;
-        return Status::ok();
-    }
-    Status countBinders(std::vector<int32_t>* out) override {
-        sp<RpcServer> spServer = server.promote();
-        if (spServer == nullptr) {
-            return Status::fromExceptionCode(Status::EX_NULL_POINTER);
-        }
-        out->clear();
-        for (auto session : spServer->listSessions()) {
-            size_t count = session->state()->countBinders();
-            out->push_back(count);
-        }
-        return Status::ok();
-    }
-    Status pingMe(const sp<IBinder>& binder, int32_t* out) override {
-        if (binder == nullptr) {
-            std::cout << "Received null binder!" << std::endl;
-            return Status::fromExceptionCode(Status::EX_NULL_POINTER);
-        }
-        *out = binder->pingBinder();
-        return Status::ok();
-    }
-    Status repeatBinder(const sp<IBinder>& binder, sp<IBinder>* out) override {
-        *out = binder;
-        return Status::ok();
-    }
-    static sp<IBinder> mHeldBinder;
-    Status holdBinder(const sp<IBinder>& binder) override {
-        mHeldBinder = binder;
-        return Status::ok();
-    }
-    Status getHeldBinder(sp<IBinder>* held) override {
-        *held = mHeldBinder;
-        return Status::ok();
-    }
-    Status nestMe(const sp<IBinderRpcTest>& binder, int count) override {
-        if (count <= 0) return Status::ok();
-        return binder->nestMe(this, count - 1);
-    }
-    Status alwaysGiveMeTheSameBinder(sp<IBinder>* out) override {
-        static sp<IBinder> binder = new BBinder;
-        *out = binder;
-        return Status::ok();
-    }
-    Status openSession(const std::string& name, sp<IBinderRpcSession>* out) override {
-        *out = new MyBinderRpcSession(name);
-        return Status::ok();
-    }
-    Status getNumOpenSessions(int32_t* out) override {
-        *out = MyBinderRpcSession::gNum;
-        return Status::ok();
-    }
-
-    std::mutex blockMutex;
-    Status lock() override {
-        blockMutex.lock();
-        return Status::ok();
-    }
-    Status unlockInMsAsync(int32_t ms) override {
-        usleep(ms * 1000);
-        blockMutex.unlock();
-        return Status::ok();
-    }
-    Status lockUnlock() override {
-        std::lock_guard<std::mutex> _l(blockMutex);
-        return Status::ok();
-    }
-
-    Status sleepMs(int32_t ms) override {
-        usleep(ms * 1000);
-        return Status::ok();
-    }
-
-    Status sleepMsAsync(int32_t ms) override {
-        // In-process binder calls are asynchronous, but the call to this method
-        // is synchronous wrt its client. This in/out-process threading model
-        // diffentiation is a classic binder leaky abstraction (for better or
-        // worse) and is preserved here the way binder sockets plugs itself
-        // into BpBinder, as nothing is changed at the higher levels
-        // (IInterface) which result in this behavior.
-        return sleepMs(ms);
-    }
-
-    Status doCallback(const sp<IBinderRpcCallback>& callback, bool oneway, bool delayed,
-                      const std::string& value) override {
-        if (callback == nullptr) {
-            return Status::fromExceptionCode(Status::EX_NULL_POINTER);
-        }
-
-        if (delayed) {
-            std::thread([=]() {
-                ALOGE("Executing delayed callback: '%s'", value.c_str());
-                Status status = doCallback(callback, oneway, false, value);
-                ALOGE("Delayed callback status: '%s'", status.toString8().c_str());
-            }).detach();
-            return Status::ok();
-        }
-
-        if (oneway) {
-            return callback->sendOnewayCallback(value);
-        }
-
-        return callback->sendCallback(value);
-    }
-
-    Status doCallbackAsync(const sp<IBinderRpcCallback>& callback, bool oneway, bool delayed,
-                           const std::string& value) override {
-        return doCallback(callback, oneway, delayed, value);
-    }
-
-    Status die(bool cleanup) override {
-        if (cleanup) {
-            exit(1);
-        } else {
-            _exit(1);
-        }
-    }
-
-    Status scheduleShutdown() override {
-        sp<RpcServer> strongServer = server.promote();
-        if (strongServer == nullptr) {
-            return Status::fromExceptionCode(Status::EX_NULL_POINTER);
-        }
-        std::thread([=] {
-            LOG_ALWAYS_FATAL_IF(!strongServer->shutdown(), "Could not shutdown");
-        }).detach();
-        return Status::ok();
-    }
-
-    Status useKernelBinderCallingId() override {
-        // this is WRONG! It does not make sense when using RPC binder, and
-        // because it is SO wrong, and so much code calls this, it should abort!
-
-        (void)IPCThreadState::self()->getCallingPid();
-        return Status::ok();
-    }
-};
-sp<IBinder> MyBinderRpcTest::mHeldBinder;
+    return base::StringPrintf("unexpected state %d", wstatus);
+}
 
 class Process {
 public:
@@ -334,8 +113,8 @@
                                      android::base::borrowed_fd /* readEnd */)>& f) {
         android::base::unique_fd childWriteEnd;
         android::base::unique_fd childReadEnd;
-        CHECK(android::base::Pipe(&mReadEnd, &childWriteEnd)) << strerror(errno);
-        CHECK(android::base::Pipe(&childReadEnd, &mWriteEnd)) << strerror(errno);
+        CHECK(android::base::Pipe(&mReadEnd, &childWriteEnd, 0)) << strerror(errno);
+        CHECK(android::base::Pipe(&childReadEnd, &mWriteEnd, 0)) << strerror(errno);
         if (0 == (mPid = fork())) {
             // racey: assume parent doesn't crash before this is set
             prctl(PR_SET_PDEATHSIG, SIGHUP);
@@ -347,13 +126,28 @@
     }
     ~Process() {
         if (mPid != 0) {
-            waitpid(mPid, nullptr, 0);
+            int wstatus;
+            waitpid(mPid, &wstatus, 0);
+            if (mCustomExitStatusCheck) {
+                mCustomExitStatusCheck(wstatus);
+            } else {
+                EXPECT_TRUE(WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 0)
+                        << "server process failed: " << WaitStatusToString(wstatus);
+            }
         }
     }
     android::base::borrowed_fd readEnd() { return mReadEnd; }
     android::base::borrowed_fd writeEnd() { return mWriteEnd; }
 
+    void setCustomExitStatusCheck(std::function<void(int wstatus)> f) {
+        mCustomExitStatusCheck = std::move(f);
+    }
+
+    // Kill the process. Avoid if possible. Shutdown gracefully via an RPC instead.
+    void terminate() { kill(mPid, SIGTERM); }
+
 private:
+    std::function<void(int wstatus)> mCustomExitStatusCheck;
     pid_t mPid = 0;
     android::base::unique_fd mReadEnd;
     android::base::unique_fd mWriteEnd;
@@ -368,7 +162,7 @@
 };
 
 static unsigned int allocateVsockPort() {
-    static unsigned int vsockPort = 3456;
+    static unsigned int vsockPort = 34567;
     return vsockPort++;
 }
 
@@ -421,10 +215,10 @@
 
     BinderRpcTestProcessSession(BinderRpcTestProcessSession&&) = default;
     ~BinderRpcTestProcessSession() {
-        EXPECT_NE(nullptr, rootIface);
-        if (rootIface == nullptr) return;
-
         if (!expectAlreadyShutdown) {
+            EXPECT_NE(nullptr, rootIface);
+            if (rootIface == nullptr) return;
+
             std::vector<int32_t> remoteCounts;
             // calling over any sessions counts across all sessions
             EXPECT_OK(rootIface->countBinders(&remoteCounts));
@@ -445,28 +239,6 @@
     }
 };
 
-enum class SocketType {
-    PRECONNECTED,
-    UNIX,
-    VSOCK,
-    INET,
-};
-static inline std::string PrintToString(SocketType socketType) {
-    switch (socketType) {
-        case SocketType::PRECONNECTED:
-            return "preconnected_uds";
-        case SocketType::UNIX:
-            return "unix_domain_socket";
-        case SocketType::VSOCK:
-            return "vm_socket";
-        case SocketType::INET:
-            return "inet_socket";
-        default:
-            LOG_ALWAYS_FATAL("Unknown socket type");
-            return "";
-    }
-}
-
 static base::unique_fd connectTo(const RpcSocketAddress& addr) {
     base::unique_fd serverFd(
             TEMP_FAILURE_RETRY(socket(addr.addr()->sa_family, SOCK_STREAM | SOCK_CLOEXEC, 0)));
@@ -482,120 +254,79 @@
     return serverFd;
 }
 
-class BinderRpc
-      : public ::testing::TestWithParam<std::tuple<SocketType, RpcSecurity, uint32_t, uint32_t>> {
+using RunServiceFn = void (*)(android::base::borrowed_fd writeEnd,
+                              android::base::borrowed_fd readEnd);
+
+class BinderRpc : public ::testing::TestWithParam<
+                          std::tuple<SocketType, RpcSecurity, uint32_t, uint32_t, bool, bool>> {
 public:
-    struct Options {
-        size_t numThreads = 1;
-        size_t numSessions = 1;
-        size_t numIncomingConnections = 0;
-        size_t numOutgoingConnections = SIZE_MAX;
-    };
+    SocketType socketType() const { return std::get<0>(GetParam()); }
+    RpcSecurity rpcSecurity() const { return std::get<1>(GetParam()); }
+    uint32_t clientVersion() const { return std::get<2>(GetParam()); }
+    uint32_t serverVersion() const { return std::get<3>(GetParam()); }
+    bool singleThreaded() const { return std::get<4>(GetParam()); }
+    bool noKernel() const { return std::get<5>(GetParam()); }
+
+    // Whether the test params support sending FDs in parcels.
+    bool supportsFdTransport() const {
+        return clientVersion() >= 1 && serverVersion() >= 1 && rpcSecurity() != RpcSecurity::TLS &&
+                (socketType() == SocketType::PRECONNECTED || socketType() == SocketType::UNIX);
+    }
 
     static inline std::string PrintParamInfo(const testing::TestParamInfo<ParamType>& info) {
-        auto [type, security, clientVersion, serverVersion] = info.param;
-        return PrintToString(type) + "_" + newFactory(security)->toCString() + "_clientV" +
+        auto [type, security, clientVersion, serverVersion, singleThreaded, noKernel] = info.param;
+        auto ret = PrintToString(type) + "_" + newFactory(security)->toCString() + "_clientV" +
                 std::to_string(clientVersion) + "_serverV" + std::to_string(serverVersion);
-    }
-
-    static inline void writeString(android::base::borrowed_fd fd, std::string_view str) {
-        uint64_t length = str.length();
-        CHECK(android::base::WriteFully(fd, &length, sizeof(length)));
-        CHECK(android::base::WriteFully(fd, str.data(), str.length()));
-    }
-
-    static inline std::string readString(android::base::borrowed_fd fd) {
-        uint64_t length;
-        CHECK(android::base::ReadFully(fd, &length, sizeof(length)));
-        std::string ret(length, '\0');
-        CHECK(android::base::ReadFully(fd, ret.data(), length));
+        if (singleThreaded) {
+            ret += "_single_threaded";
+        }
+        if (noKernel) {
+            ret += "_no_kernel";
+        }
         return ret;
     }
 
-    static inline void writeToFd(android::base::borrowed_fd fd, const Parcelable& parcelable) {
-        Parcel parcel;
-        CHECK_EQ(OK, parcelable.writeToParcel(&parcel));
-        writeString(fd,
-                    std::string(reinterpret_cast<const char*>(parcel.data()), parcel.dataSize()));
-    }
-
-    template <typename T>
-    static inline T readFromFd(android::base::borrowed_fd fd) {
-        std::string data = readString(fd);
-        Parcel parcel;
-        CHECK_EQ(OK, parcel.setData(reinterpret_cast<const uint8_t*>(data.data()), data.size()));
-        T object;
-        CHECK_EQ(OK, object.readFromParcel(&parcel));
-        return object;
-    }
-
     // This creates a new process serving an interface on a certain number of
     // threads.
-    ProcessSession createRpcTestSocketServerProcess(
-            const Options& options, const std::function<void(const sp<RpcServer>&)>& configure) {
+    ProcessSession createRpcTestSocketServerProcessEtc(const BinderRpcOptions& options) {
         CHECK_GE(options.numSessions, 1) << "Must have at least one session to a server";
 
         SocketType socketType = std::get<0>(GetParam());
         RpcSecurity rpcSecurity = std::get<1>(GetParam());
         uint32_t clientVersion = std::get<2>(GetParam());
         uint32_t serverVersion = std::get<3>(GetParam());
+        bool singleThreaded = std::get<4>(GetParam());
+        bool noKernel = std::get<5>(GetParam());
 
-        unsigned int vsockPort = allocateVsockPort();
-        std::string addr = allocateSocketAddress();
+        std::string path = android::base::GetExecutableDirectory();
+        auto servicePath =
+                android::base::StringPrintf("%s/binder_rpc_test_service%s%s", path.c_str(),
+                                            singleThreaded ? "_single_threaded" : "",
+                                            noKernel ? "_no_kernel" : "");
 
         auto ret = ProcessSession{
                 .host = Process([=](android::base::borrowed_fd writeEnd,
                                     android::base::borrowed_fd readEnd) {
-                    auto certVerifier = std::make_shared<RpcCertificateVerifierSimple>();
-                    sp<RpcServer> server = RpcServer::make(newFactory(rpcSecurity, certVerifier));
-
-                    server->setProtocolVersion(serverVersion);
-                    server->setMaxThreads(options.numThreads);
-
-                    unsigned int outPort = 0;
-
-                    switch (socketType) {
-                        case SocketType::PRECONNECTED:
-                            [[fallthrough]];
-                        case SocketType::UNIX:
-                            CHECK_EQ(OK, server->setupUnixDomainServer(addr.c_str())) << addr;
-                            break;
-                        case SocketType::VSOCK:
-                            CHECK_EQ(OK, server->setupVsockServer(vsockPort));
-                            break;
-                        case SocketType::INET: {
-                            CHECK_EQ(OK, server->setupInetServer(kLocalInetAddress, 0, &outPort));
-                            CHECK_NE(0, outPort);
-                            break;
-                        }
-                        default:
-                            LOG_ALWAYS_FATAL("Unknown socket type");
-                    }
-
-                    BinderRpcTestServerInfo serverInfo;
-                    serverInfo.port = static_cast<int64_t>(outPort);
-                    serverInfo.cert.data = server->getCertificate(RpcCertificateFormat::PEM);
-                    writeToFd(writeEnd, serverInfo);
-                    auto clientInfo = readFromFd<BinderRpcTestClientInfo>(readEnd);
-
-                    if (rpcSecurity == RpcSecurity::TLS) {
-                        for (const auto& clientCert : clientInfo.certs) {
-                            CHECK_EQ(OK,
-                                     certVerifier
-                                             ->addTrustedPeerCertificate(RpcCertificateFormat::PEM,
-                                                                         clientCert.data));
-                        }
-                    }
-
-                    configure(server);
-
-                    server->join();
-
-                    // Another thread calls shutdown. Wait for it to complete.
-                    (void)server->shutdown();
+                    auto writeFd = std::to_string(writeEnd.get());
+                    auto readFd = std::to_string(readEnd.get());
+                    execl(servicePath.c_str(), servicePath.c_str(), writeFd.c_str(), readFd.c_str(),
+                          NULL);
                 }),
         };
 
+        BinderRpcTestServerConfig serverConfig;
+        serverConfig.numThreads = options.numThreads;
+        serverConfig.socketType = static_cast<int32_t>(socketType);
+        serverConfig.rpcSecurity = static_cast<int32_t>(rpcSecurity);
+        serverConfig.serverVersion = serverVersion;
+        serverConfig.vsockPort = allocateVsockPort();
+        serverConfig.addr = allocateSocketAddress();
+        for (auto mode : options.serverSupportedFileDescriptorTransportModes) {
+            serverConfig.serverSupportedFileDescriptorTransportModes.push_back(
+                    static_cast<int32_t>(mode));
+        }
+        writeToFd(ret.host.writeEnd(), serverConfig);
+
         std::vector<sp<RpcSession>> sessions;
         auto certVerifier = std::make_shared<RpcCertificateVerifierSimple>();
         for (size_t i = 0; i < options.numSessions; i++) {
@@ -628,18 +359,19 @@
             CHECK(session->setProtocolVersion(clientVersion));
             session->setMaxIncomingThreads(options.numIncomingConnections);
             session->setMaxOutgoingThreads(options.numOutgoingConnections);
+            session->setFileDescriptorTransportMode(options.clientFileDescriptorTransportMode);
 
             switch (socketType) {
                 case SocketType::PRECONNECTED:
                     status = session->setupPreconnectedClient({}, [=]() {
-                        return connectTo(UnixSocketAddress(addr.c_str()));
+                        return connectTo(UnixSocketAddress(serverConfig.addr.c_str()));
                     });
                     break;
                 case SocketType::UNIX:
-                    status = session->setupUnixDomainClient(addr.c_str());
+                    status = session->setupUnixDomainClient(serverConfig.addr.c_str());
                     break;
                 case SocketType::VSOCK:
-                    status = session->setupVsockClient(VMADDR_CID_LOCAL, vsockPort);
+                    status = session->setupVsockClient(VMADDR_CID_LOCAL, serverConfig.vsockPort);
                     break;
                 case SocketType::INET:
                     status = session->setupInetClient("127.0.0.1", serverInfo.port);
@@ -647,55 +379,22 @@
                 default:
                     LOG_ALWAYS_FATAL("Unknown socket type");
             }
+            if (options.allowConnectFailure && status != OK) {
+                ret.sessions.clear();
+                break;
+            }
             CHECK_EQ(status, OK) << "Could not connect: " << statusToString(status);
             ret.sessions.push_back({session, session->getRootObject()});
         }
         return ret;
     }
 
-    BinderRpcTestProcessSession createRpcTestSocketServerProcess(const Options& options) {
+    BinderRpcTestProcessSession createRpcTestSocketServerProcess(const BinderRpcOptions& options) {
         BinderRpcTestProcessSession ret{
-                .proc = createRpcTestSocketServerProcess(
-                        options,
-                        [&](const sp<RpcServer>& server) {
-                            server->setPerSessionRootObject([&](const void* addrPtr, size_t len) {
-                                // UNIX sockets with abstract addresses return
-                                // sizeof(sa_family_t)==2 in addrlen
-                                CHECK_GE(len, sizeof(sa_family_t));
-                                const sockaddr* addr = reinterpret_cast<const sockaddr*>(addrPtr);
-                                sp<MyBinderRpcTest> service = sp<MyBinderRpcTest>::make();
-                                switch (addr->sa_family) {
-                                    case AF_UNIX:
-                                        // nothing to save
-                                        break;
-                                    case AF_VSOCK:
-                                        CHECK_EQ(len, sizeof(sockaddr_vm));
-                                        service->port = reinterpret_cast<const sockaddr_vm*>(addr)
-                                                                ->svm_port;
-                                        break;
-                                    case AF_INET:
-                                        CHECK_EQ(len, sizeof(sockaddr_in));
-                                        service->port =
-                                                ntohs(reinterpret_cast<const sockaddr_in*>(addr)
-                                                              ->sin_port);
-                                        break;
-                                    case AF_INET6:
-                                        CHECK_EQ(len, sizeof(sockaddr_in));
-                                        service->port =
-                                                ntohs(reinterpret_cast<const sockaddr_in6*>(addr)
-                                                              ->sin6_port);
-                                        break;
-                                    default:
-                                        LOG_ALWAYS_FATAL("Unrecognized address family %d",
-                                                         addr->sa_family);
-                                }
-                                service->server = server;
-                                return service;
-                            });
-                        }),
+                .proc = createRpcTestSocketServerProcessEtc(options),
         };
 
-        ret.rootBinder = ret.proc.sessions.at(0).root;
+        ret.rootBinder = ret.proc.sessions.empty() ? nullptr : ret.proc.sessions.at(0).root;
         ret.rootIface = interface_cast<IBinderRpcTest>(ret.rootBinder);
 
         return ret;
@@ -705,6 +404,18 @@
                                      size_t sleepMs = 500);
 };
 
+// Test fixture for tests that start multiple threads.
+// This includes tests with one thread but multiple sessions,
+// since a server uses one thread per session.
+class BinderRpcThreads : public BinderRpc {
+public:
+    void SetUp() override {
+        if constexpr (!kEnableRpcThreads) {
+            GTEST_SKIP() << "Test skipped because threads were disabled at build time";
+        }
+    }
+};
+
 TEST_P(BinderRpc, Ping) {
     auto proc = createRpcTestSocketServerProcess({});
     ASSERT_NE(proc.rootBinder, nullptr);
@@ -717,7 +428,7 @@
     EXPECT_EQ(IBinderRpcTest::descriptor, proc.rootBinder->getInterfaceDescriptor());
 }
 
-TEST_P(BinderRpc, MultipleSessions) {
+TEST_P(BinderRpcThreads, MultipleSessions) {
     auto proc = createRpcTestSocketServerProcess({.numThreads = 1, .numSessions = 5});
     for (auto session : proc.proc.sessions) {
         ASSERT_NE(nullptr, session.root);
@@ -725,7 +436,7 @@
     }
 }
 
-TEST_P(BinderRpc, SeparateRootObject) {
+TEST_P(BinderRpcThreads, SeparateRootObject) {
     SocketType type = std::get<0>(GetParam());
     if (type == SocketType::PRECONNECTED || type == SocketType::UNIX) {
         // we can't get port numbers for unix sockets
@@ -802,6 +513,13 @@
     EXPECT_EQ(single + single, doubled);
 }
 
+TEST_P(BinderRpc, InvalidNullBinderReturn) {
+    auto proc = createRpcTestSocketServerProcess({});
+
+    sp<IBinder> outBinder;
+    EXPECT_EQ(proc.rootIface->getNullBinder(&outBinder).transactionError(), UNEXPECTED_NULL);
+}
+
 TEST_P(BinderRpc, CallMeBack) {
     auto proc = createRpcTestSocketServerProcess({});
 
@@ -901,7 +619,7 @@
               proc1.rootIface->repeatBinder(proc2.rootBinder, &outBinder).transactionError());
 }
 
-TEST_P(BinderRpc, CannotMixBindersBetweenTwoSessionsToTheSameServer) {
+TEST_P(BinderRpcThreads, CannotMixBindersBetweenTwoSessionsToTheSameServer) {
     auto proc = createRpcTestSocketServerProcess({.numThreads = 1, .numSessions = 2});
 
     sp<IBinder> outBinder;
@@ -911,6 +629,11 @@
 }
 
 TEST_P(BinderRpc, CannotSendRegularBinderOverSocketBinder) {
+    if (!kEnableKernelIpc || noKernel()) {
+        GTEST_SKIP() << "Test disabled because Binder kernel driver was disabled "
+                        "at build time.";
+    }
+
     auto proc = createRpcTestSocketServerProcess({});
 
     sp<IBinder> someRealBinder = IInterface::asBinder(defaultServiceManager());
@@ -920,6 +643,11 @@
 }
 
 TEST_P(BinderRpc, CannotSendSocketBinderOverRegularBinder) {
+    if (!kEnableKernelIpc || noKernel()) {
+        GTEST_SKIP() << "Test disabled because Binder kernel driver was disabled "
+                        "at build time.";
+    }
+
     auto proc = createRpcTestSocketServerProcess({});
 
     // for historical reasons, IServiceManager interface only returns the
@@ -939,7 +667,13 @@
 }
 
 TEST_P(BinderRpc, NestedTransactions) {
-    auto proc = createRpcTestSocketServerProcess({});
+    auto proc = createRpcTestSocketServerProcess({
+            // Enable FD support because it uses more stack space and so represents
+            // something closer to a worst case scenario.
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::UNIX,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::UNIX},
+    });
 
     auto nastyNester = sp<MyBinderRpcTest>::make();
     EXPECT_OK(proc.rootIface->nestMe(nastyNester, 10));
@@ -1041,7 +775,7 @@
     return duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count();
 }
 
-TEST_P(BinderRpc, ThreadPoolGreaterThanEqualRequested) {
+TEST_P(BinderRpcThreads, ThreadPoolGreaterThanEqualRequested) {
     constexpr size_t kNumThreads = 10;
 
     auto proc = createRpcTestSocketServerProcess({.numThreads = kNumThreads});
@@ -1092,14 +826,14 @@
     EXPECT_LE(epochMsAfter, epochMsBefore + 3 * sleepMs);
 }
 
-TEST_P(BinderRpc, ThreadPoolOverSaturated) {
+TEST_P(BinderRpcThreads, ThreadPoolOverSaturated) {
     constexpr size_t kNumThreads = 10;
     constexpr size_t kNumCalls = kNumThreads + 3;
     auto proc = createRpcTestSocketServerProcess({.numThreads = kNumThreads});
     testThreadPoolOverSaturated(proc.rootIface, kNumCalls);
 }
 
-TEST_P(BinderRpc, ThreadPoolLimitOutgoing) {
+TEST_P(BinderRpcThreads, ThreadPoolLimitOutgoing) {
     constexpr size_t kNumThreads = 20;
     constexpr size_t kNumOutgoingConnections = 10;
     constexpr size_t kNumCalls = kNumOutgoingConnections + 3;
@@ -1108,7 +842,7 @@
     testThreadPoolOverSaturated(proc.rootIface, kNumCalls);
 }
 
-TEST_P(BinderRpc, ThreadingStressTest) {
+TEST_P(BinderRpcThreads, ThreadingStressTest) {
     constexpr size_t kNumClientThreads = 10;
     constexpr size_t kNumServerThreads = 10;
     constexpr size_t kNumCalls = 100;
@@ -1137,7 +871,7 @@
     for (auto& t : threads) t.join();
 }
 
-TEST_P(BinderRpc, OnewayStressTest) {
+TEST_P(BinderRpcThreads, OnewayStressTest) {
     constexpr size_t kNumClientThreads = 10;
     constexpr size_t kNumServerThreads = 10;
     constexpr size_t kNumCalls = 1000;
@@ -1172,7 +906,7 @@
     EXPECT_LT(epochMsAfter, epochMsBefore + kReallyLongTimeMs);
 }
 
-TEST_P(BinderRpc, OnewayCallQueueing) {
+TEST_P(BinderRpcThreads, OnewayCallQueueing) {
     constexpr size_t kNumSleeps = 10;
     constexpr size_t kNumExtraServerThreads = 4;
     constexpr size_t kSleepMs = 50;
@@ -1196,12 +930,12 @@
 
     size_t epochMsAfter = epochMillis();
 
-    EXPECT_GT(epochMsAfter, epochMsBefore + kSleepMs * kNumSleeps);
+    EXPECT_GE(epochMsAfter, epochMsBefore + kSleepMs * kNumSleeps);
 
     saturateThreadPool(1 + kNumExtraServerThreads, proc.rootIface);
 }
 
-TEST_P(BinderRpc, OnewayCallExhaustion) {
+TEST_P(BinderRpcThreads, OnewayCallExhaustion) {
     constexpr size_t kNumClients = 2;
     constexpr size_t kTooLongMs = 1000;
 
@@ -1244,11 +978,21 @@
 TEST_P(BinderRpc, Callbacks) {
     const static std::string kTestString = "good afternoon!";
 
+    bool bothSingleThreaded = !kEnableRpcThreads || singleThreaded();
+
     for (bool callIsOneway : {true, false}) {
         for (bool callbackIsOneway : {true, false}) {
             for (bool delayed : {true, false}) {
+                if (bothSingleThreaded && (callIsOneway || callbackIsOneway || delayed)) {
+                    // we have no incoming connections to receive the callback
+                    continue;
+                }
+
+                size_t numIncomingConnections = bothSingleThreaded ? 0 : 1;
                 auto proc = createRpcTestSocketServerProcess(
-                        {.numThreads = 1, .numSessions = 1, .numIncomingConnections = 1});
+                        {.numThreads = 1,
+                         .numSessions = 1,
+                         .numIncomingConnections = numIncomingConnections});
                 auto cb = sp<MyBinderRpcCallback>::make();
 
                 if (callIsOneway) {
@@ -1264,7 +1008,7 @@
                 // the callback will be processed on another thread.
                 if (callIsOneway || callbackIsOneway || delayed) {
                     using std::literals::chrono_literals::operator""s;
-                    std::unique_lock<std::mutex> _l(cb->mMutex);
+                    RpcMutexUniqueLock _l(cb->mMutex);
                     cb->mCv.wait_for(_l, 1s, [&] { return !cb->mValues.empty(); });
                 }
 
@@ -1286,6 +1030,12 @@
                 // need to manually shut it down
                 EXPECT_TRUE(proc.proc.sessions.at(0).session->shutdownAndWait(true));
 
+                proc.proc.host.setCustomExitStatusCheck([](int wstatus) {
+                    // Flaky. Sometimes gets SIGABRT.
+                    EXPECT_TRUE((WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 0) ||
+                                (WIFSIGNALED(wstatus) && WTERMSIG(wstatus) == SIGABRT))
+                            << "server process failed: " << WaitStatusToString(wstatus);
+                });
                 proc.expectAlreadyShutdown = true;
             }
         }
@@ -1315,33 +1065,185 @@
         EXPECT_EQ(DEAD_OBJECT, proc.rootIface->die(doDeathCleanup).transactionError())
                 << "Do death cleanup: " << doDeathCleanup;
 
+        proc.proc.host.setCustomExitStatusCheck([](int wstatus) {
+            EXPECT_TRUE(WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 1)
+                    << "server process failed incorrectly: " << WaitStatusToString(wstatus);
+        });
         proc.expectAlreadyShutdown = true;
     }
 }
 
 TEST_P(BinderRpc, UseKernelBinderCallingId) {
-    bool okToFork = ProcessState::selfOrNull() == nullptr;
+    // This test only works if the current process shared the internal state of
+    // ProcessState with the service across the call to fork(). Both the static
+    // libraries and libbinder.so have their own separate copies of all the
+    // globals, so the test only works when the test client and service both use
+    // libbinder.so (when using static libraries, even a client and service
+    // using the same kind of static library should have separate copies of the
+    // variables).
+    if (!kEnableSharedLibs || singleThreaded() || noKernel()) {
+        GTEST_SKIP() << "Test disabled because Binder kernel driver was disabled "
+                        "at build time.";
+    }
 
     auto proc = createRpcTestSocketServerProcess({});
 
-    // If this process has used ProcessState already, then the forked process
-    // cannot use it at all. If this process hasn't used it (depending on the
-    // order tests are run), then the forked process can use it, and we'll only
-    // catch the invalid usage the second time. Such is the burden of global
-    // state!
-    if (okToFork) {
-        // we can't allocate IPCThreadState so actually the first time should
-        // succeed :(
-        EXPECT_OK(proc.rootIface->useKernelBinderCallingId());
-    }
+    // we can't allocate IPCThreadState so actually the first time should
+    // succeed :(
+    EXPECT_OK(proc.rootIface->useKernelBinderCallingId());
 
     // second time! we catch the error :)
     EXPECT_EQ(DEAD_OBJECT, proc.rootIface->useKernelBinderCallingId().transactionError());
 
+    proc.proc.host.setCustomExitStatusCheck([](int wstatus) {
+        EXPECT_TRUE(WIFSIGNALED(wstatus) && WTERMSIG(wstatus) == SIGABRT)
+                << "server process failed incorrectly: " << WaitStatusToString(wstatus);
+    });
     proc.expectAlreadyShutdown = true;
 }
 
+TEST_P(BinderRpc, FileDescriptorTransportRejectNone) {
+    auto proc = createRpcTestSocketServerProcess({
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::NONE,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::UNIX},
+            .allowConnectFailure = true,
+    });
+    EXPECT_TRUE(proc.proc.sessions.empty()) << "session connections should have failed";
+    proc.proc.host.terminate();
+    proc.proc.host.setCustomExitStatusCheck([](int wstatus) {
+        EXPECT_TRUE(WIFSIGNALED(wstatus) && WTERMSIG(wstatus) == SIGTERM)
+                << "server process failed incorrectly: " << WaitStatusToString(wstatus);
+    });
+    proc.expectAlreadyShutdown = true;
+}
+
+TEST_P(BinderRpc, FileDescriptorTransportRejectUnix) {
+    auto proc = createRpcTestSocketServerProcess({
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::UNIX,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::NONE},
+            .allowConnectFailure = true,
+    });
+    EXPECT_TRUE(proc.proc.sessions.empty()) << "session connections should have failed";
+    proc.proc.host.terminate();
+    proc.proc.host.setCustomExitStatusCheck([](int wstatus) {
+        EXPECT_TRUE(WIFSIGNALED(wstatus) && WTERMSIG(wstatus) == SIGTERM)
+                << "server process failed incorrectly: " << WaitStatusToString(wstatus);
+    });
+    proc.expectAlreadyShutdown = true;
+}
+
+TEST_P(BinderRpc, FileDescriptorTransportOptionalUnix) {
+    auto proc = createRpcTestSocketServerProcess({
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::NONE,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::NONE,
+                     RpcSession::FileDescriptorTransportMode::UNIX},
+    });
+
+    android::os::ParcelFileDescriptor out;
+    auto status = proc.rootIface->echoAsFile("hello", &out);
+    EXPECT_EQ(status.transactionError(), FDS_NOT_ALLOWED) << status;
+}
+
+TEST_P(BinderRpc, ReceiveFile) {
+    auto proc = createRpcTestSocketServerProcess({
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::UNIX,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::UNIX},
+    });
+
+    android::os::ParcelFileDescriptor out;
+    auto status = proc.rootIface->echoAsFile("hello", &out);
+    if (!supportsFdTransport()) {
+        EXPECT_EQ(status.transactionError(), BAD_VALUE) << status;
+        return;
+    }
+    ASSERT_TRUE(status.isOk()) << status;
+
+    std::string result;
+    CHECK(android::base::ReadFdToString(out.get(), &result));
+    EXPECT_EQ(result, "hello");
+}
+
+TEST_P(BinderRpc, SendFiles) {
+    auto proc = createRpcTestSocketServerProcess({
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::UNIX,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::UNIX},
+    });
+
+    std::vector<android::os::ParcelFileDescriptor> files;
+    files.emplace_back(android::os::ParcelFileDescriptor(mockFileDescriptor("123")));
+    files.emplace_back(android::os::ParcelFileDescriptor(mockFileDescriptor("a")));
+    files.emplace_back(android::os::ParcelFileDescriptor(mockFileDescriptor("b")));
+    files.emplace_back(android::os::ParcelFileDescriptor(mockFileDescriptor("cd")));
+
+    android::os::ParcelFileDescriptor out;
+    auto status = proc.rootIface->concatFiles(files, &out);
+    if (!supportsFdTransport()) {
+        EXPECT_EQ(status.transactionError(), BAD_VALUE) << status;
+        return;
+    }
+    ASSERT_TRUE(status.isOk()) << status;
+
+    std::string result;
+    CHECK(android::base::ReadFdToString(out.get(), &result));
+    EXPECT_EQ(result, "123abcd");
+}
+
+TEST_P(BinderRpc, SendMaxFiles) {
+    if (!supportsFdTransport()) {
+        GTEST_SKIP() << "Would fail trivially (which is tested by BinderRpc::SendFiles)";
+    }
+
+    auto proc = createRpcTestSocketServerProcess({
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::UNIX,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::UNIX},
+    });
+
+    std::vector<android::os::ParcelFileDescriptor> files;
+    for (int i = 0; i < 253; i++) {
+        files.emplace_back(android::os::ParcelFileDescriptor(mockFileDescriptor("a")));
+    }
+
+    android::os::ParcelFileDescriptor out;
+    auto status = proc.rootIface->concatFiles(files, &out);
+    ASSERT_TRUE(status.isOk()) << status;
+
+    std::string result;
+    CHECK(android::base::ReadFdToString(out.get(), &result));
+    EXPECT_EQ(result, std::string(253, 'a'));
+}
+
+TEST_P(BinderRpc, SendTooManyFiles) {
+    if (!supportsFdTransport()) {
+        GTEST_SKIP() << "Would fail trivially (which is tested by BinderRpc::SendFiles)";
+    }
+
+    auto proc = createRpcTestSocketServerProcess({
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::UNIX,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::UNIX},
+    });
+
+    std::vector<android::os::ParcelFileDescriptor> files;
+    for (int i = 0; i < 254; i++) {
+        files.emplace_back(android::os::ParcelFileDescriptor(mockFileDescriptor("a")));
+    }
+
+    android::os::ParcelFileDescriptor out;
+    auto status = proc.rootIface->concatFiles(files, &out);
+    EXPECT_EQ(status.transactionError(), BAD_VALUE) << status;
+}
+
 TEST_P(BinderRpc, WorksWithLibbinderNdkPing) {
+    if constexpr (!kEnableSharedLibs) {
+        GTEST_SKIP() << "Test disabled because Binder was built as a static library";
+    }
+
     auto proc = createRpcTestSocketServerProcess({});
 
     ndk::SpAIBinder binder = ndk::SpAIBinder(AIBinder_fromPlatformBinder(proc.rootBinder));
@@ -1351,6 +1253,10 @@
 }
 
 TEST_P(BinderRpc, WorksWithLibbinderNdkUserTransaction) {
+    if constexpr (!kEnableSharedLibs) {
+        GTEST_SKIP() << "Test disabled because Binder was built as a static library";
+    }
+
     auto proc = createRpcTestSocketServerProcess({});
 
     ndk::SpAIBinder binder = ndk::SpAIBinder(AIBinder_fromPlatformBinder(proc.rootBinder));
@@ -1375,7 +1281,7 @@
     return ret;
 }
 
-TEST_P(BinderRpc, Fds) {
+TEST_P(BinderRpcThreads, Fds) {
     ssize_t beforeFds = countFds();
     ASSERT_GE(beforeFds, 0);
     {
@@ -1398,20 +1304,90 @@
 static bool testSupportVsockLoopback() {
     // We don't need to enable TLS to know if vsock is supported.
     unsigned int vsockPort = allocateVsockPort();
-    sp<RpcServer> server = RpcServer::make(RpcTransportCtxFactoryRaw::make());
-    if (status_t status = server->setupVsockServer(vsockPort); status != OK) {
-        if (status == -EAFNOSUPPORT) {
-            return false;
-        }
-        LOG_ALWAYS_FATAL("Could not setup vsock server: %s", statusToString(status).c_str());
-    }
-    server->start();
 
-    sp<RpcSession> session = RpcSession::make(RpcTransportCtxFactoryRaw::make());
-    status_t status = session->setupVsockClient(VMADDR_CID_LOCAL, vsockPort);
-    while (!server->shutdown()) usleep(10000);
-    ALOGE("Detected vsock loopback supported: %s", statusToString(status).c_str());
-    return status == OK;
+    android::base::unique_fd serverFd(
+            TEMP_FAILURE_RETRY(socket(AF_VSOCK, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0)));
+    LOG_ALWAYS_FATAL_IF(serverFd == -1, "Could not create socket: %s", strerror(errno));
+
+    sockaddr_vm serverAddr{
+            .svm_family = AF_VSOCK,
+            .svm_port = vsockPort,
+            .svm_cid = VMADDR_CID_ANY,
+    };
+    int ret = TEMP_FAILURE_RETRY(
+            bind(serverFd.get(), reinterpret_cast<sockaddr*>(&serverAddr), sizeof(serverAddr)));
+    LOG_ALWAYS_FATAL_IF(0 != ret, "Could not bind socket to port %u: %s", vsockPort,
+                        strerror(errno));
+
+    ret = TEMP_FAILURE_RETRY(listen(serverFd.get(), 1 /*backlog*/));
+    LOG_ALWAYS_FATAL_IF(0 != ret, "Could not listen socket on port %u: %s", vsockPort,
+                        strerror(errno));
+
+    // Try to connect to the server using the VMADDR_CID_LOCAL cid
+    // to see if the kernel supports it. It's safe to use a blocking
+    // connect because vsock sockets have a 2 second connection timeout,
+    // and they return ETIMEDOUT after that.
+    android::base::unique_fd connectFd(
+            TEMP_FAILURE_RETRY(socket(AF_VSOCK, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0)));
+    LOG_ALWAYS_FATAL_IF(connectFd == -1, "Could not create socket for port %u: %s", vsockPort,
+                        strerror(errno));
+
+    bool success = false;
+    sockaddr_vm connectAddr{
+            .svm_family = AF_VSOCK,
+            .svm_port = vsockPort,
+            .svm_cid = VMADDR_CID_LOCAL,
+    };
+    ret = TEMP_FAILURE_RETRY(connect(connectFd.get(), reinterpret_cast<sockaddr*>(&connectAddr),
+                                     sizeof(connectAddr)));
+    if (ret != 0 && (errno == EAGAIN || errno == EINPROGRESS)) {
+        android::base::unique_fd acceptFd;
+        while (true) {
+            pollfd pfd[]{
+                    {.fd = serverFd.get(), .events = POLLIN, .revents = 0},
+                    {.fd = connectFd.get(), .events = POLLOUT, .revents = 0},
+            };
+            ret = TEMP_FAILURE_RETRY(poll(pfd, arraysize(pfd), -1));
+            LOG_ALWAYS_FATAL_IF(ret < 0, "Error polling: %s", strerror(errno));
+
+            if (pfd[0].revents & POLLIN) {
+                sockaddr_vm acceptAddr;
+                socklen_t acceptAddrLen = sizeof(acceptAddr);
+                ret = TEMP_FAILURE_RETRY(accept4(serverFd.get(),
+                                                 reinterpret_cast<sockaddr*>(&acceptAddr),
+                                                 &acceptAddrLen, SOCK_CLOEXEC));
+                LOG_ALWAYS_FATAL_IF(ret < 0, "Could not accept4 socket: %s", strerror(errno));
+                LOG_ALWAYS_FATAL_IF(acceptAddrLen != static_cast<socklen_t>(sizeof(acceptAddr)),
+                                    "Truncated address");
+
+                // Store the fd in acceptFd so we keep the connection alive
+                // while polling connectFd
+                acceptFd.reset(ret);
+            }
+
+            if (pfd[1].revents & POLLOUT) {
+                // Connect either succeeded or timed out
+                int connectErrno;
+                socklen_t connectErrnoLen = sizeof(connectErrno);
+                int ret = getsockopt(connectFd.get(), SOL_SOCKET, SO_ERROR, &connectErrno,
+                                     &connectErrnoLen);
+                LOG_ALWAYS_FATAL_IF(ret == -1,
+                                    "Could not getsockopt() after connect() "
+                                    "on non-blocking socket: %s.",
+                                    strerror(errno));
+
+                // We're done, this is all we wanted
+                success = connectErrno == 0;
+                break;
+            }
+        }
+    } else {
+        success = ret == 0;
+    }
+
+    ALOGE("Detected vsock loopback supported: %s", success ? "yes" : "no");
+
+    return success;
 }
 
 static std::vector<SocketType> testSocketTypes(bool hasPreconnected = true) {
@@ -1441,7 +1417,18 @@
                         ::testing::Combine(::testing::ValuesIn(testSocketTypes()),
                                            ::testing::ValuesIn(RpcSecurityValues()),
                                            ::testing::ValuesIn(testVersions()),
-                                           ::testing::ValuesIn(testVersions())),
+                                           ::testing::ValuesIn(testVersions()),
+                                           ::testing::Values(false, true),
+                                           ::testing::Values(false, true)),
+                        BinderRpc::PrintParamInfo);
+
+INSTANTIATE_TEST_CASE_P(PerSocket, BinderRpcThreads,
+                        ::testing::Combine(::testing::ValuesIn(testSocketTypes()),
+                                           ::testing::ValuesIn(RpcSecurityValues()),
+                                           ::testing::ValuesIn(testVersions()),
+                                           ::testing::ValuesIn(testVersions()),
+                                           ::testing::Values(false),
+                                           ::testing::Values(false, true)),
                         BinderRpc::PrintParamInfo);
 
 class BinderRpcServerRootObject
@@ -1496,6 +1483,10 @@
 };
 
 TEST_P(BinderRpcServerOnly, Shutdown) {
+    if constexpr (!kEnableRpcThreads) {
+        GTEST_SKIP() << "Test skipped because threads were disabled at build time";
+    }
+
     auto addr = allocateSocketAddress();
     auto server = RpcServer::make(newFactory(std::get<0>(GetParam())));
     server->setProtocolVersion(std::get<1>(GetParam()));
@@ -1527,6 +1518,11 @@
                     "createRpcDelegateServiceManager() with a device attached, such test belongs "
                     "to binderHostDeviceTest. Hence, just disable this test on host.";
 #endif // !__ANDROID__
+    if constexpr (!kEnableKernelIpc) {
+        GTEST_SKIP() << "Test disabled because Binder kernel driver was disabled "
+                        "at build time.";
+    }
+
     sp<IServiceManager> sm = defaultServiceManager();
     ASSERT_NE(nullptr, sm);
     // Any Java service with non-empty getInterfaceDescriptor() would do.
@@ -1711,7 +1707,7 @@
             std::string message(kMessage);
             iovec messageIov{message.data(), message.size()};
             auto status = serverTransport->interruptableWriteFully(fdTrigger, &messageIov, 1,
-                                                                   std::nullopt);
+                                                                   std::nullopt, nullptr);
             if (status != OK) return AssertionFailure() << statusToString(status);
             return AssertionSuccess();
         }
@@ -1746,7 +1742,7 @@
             iovec readMessageIov{readMessage.data(), readMessage.size()};
             status_t readStatus =
                     mClientTransport->interruptableReadFully(mFdTrigger.get(), &readMessageIov, 1,
-                                                             std::nullopt);
+                                                             std::nullopt, nullptr);
             if (readStatus != OK) {
                 return AssertionFailure() << statusToString(readStatus);
             }
@@ -1827,6 +1823,11 @@
         (void)serverVersion;
         return RpcTransportTestUtils::trust(rpcSecurity, certificateFormat, a, b);
     }
+    void SetUp() override {
+        if constexpr (!kEnableRpcThreads) {
+            GTEST_SKIP() << "Test skipped because threads were disabled at build time";
+        }
+    }
 };
 
 TEST_P(RpcTransportTest, GoodCertificate) {
@@ -1954,8 +1955,8 @@
     auto serverPostConnect = [&](RpcTransport* serverTransport, FdTrigger* fdTrigger) {
         std::string message(RpcTransportTestUtils::kMessage);
         iovec messageIov{message.data(), message.size()};
-        auto status =
-                serverTransport->interruptableWriteFully(fdTrigger, &messageIov, 1, std::nullopt);
+        auto status = serverTransport->interruptableWriteFully(fdTrigger, &messageIov, 1,
+                                                               std::nullopt, nullptr);
         if (status != OK) return AssertionFailure() << statusToString(status);
 
         {
@@ -1966,7 +1967,8 @@
         }
 
         iovec msg2Iov{msg2.data(), msg2.size()};
-        status = serverTransport->interruptableWriteFully(fdTrigger, &msg2Iov, 1, std::nullopt);
+        status = serverTransport->interruptableWriteFully(fdTrigger, &msg2Iov, 1, std::nullopt,
+                                                          nullptr);
         if (status != DEAD_OBJECT)
             return AssertionFailure() << "When FdTrigger is shut down, interruptableWriteFully "
                                          "should return DEAD_OBJECT, but it is "
@@ -2030,6 +2032,10 @@
 };
 
 TEST_P(RpcTransportTlsKeyTest, PreSignedCertificate) {
+    if constexpr (!kEnableRpcThreads) {
+        GTEST_SKIP() << "Test skipped because threads were disabled at build time";
+    }
+
     auto [socketType, certificateFormat, keyFormat, serverVersion] = GetParam();
 
     std::vector<uint8_t> pkeyData, certData;
diff --git a/libs/binder/tests/binderRpcTestCommon.cpp b/libs/binder/tests/binderRpcTestCommon.cpp
new file mode 100644
index 0000000..0d9aa95
--- /dev/null
+++ b/libs/binder/tests/binderRpcTestCommon.cpp
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "binderRpcTestCommon.h"
+
+namespace android {
+
+std::atomic<int32_t> MyBinderRpcSession::gNum;
+sp<IBinder> MyBinderRpcTest::mHeldBinder;
+
+} // namespace android
diff --git a/libs/binder/tests/binderRpcTestCommon.h b/libs/binder/tests/binderRpcTestCommon.h
new file mode 100644
index 0000000..4513d36
--- /dev/null
+++ b/libs/binder/tests/binderRpcTestCommon.h
@@ -0,0 +1,379 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <BinderRpcTestClientInfo.h>
+#include <BinderRpcTestServerConfig.h>
+#include <BinderRpcTestServerInfo.h>
+#include <BnBinderRpcCallback.h>
+#include <BnBinderRpcSession.h>
+#include <BnBinderRpcTest.h>
+#include <aidl/IBinderRpcTest.h>
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android/binder_auto_utils.h>
+#include <android/binder_libbinder.h>
+#include <binder/Binder.h>
+#include <binder/BpBinder.h>
+#include <binder/IPCThreadState.h>
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+#include <binder/RpcServer.h>
+#include <binder/RpcSession.h>
+#include <binder/RpcThreads.h>
+#include <binder/RpcTlsTestUtils.h>
+#include <binder/RpcTlsUtils.h>
+#include <binder/RpcTransport.h>
+#include <binder/RpcTransportRaw.h>
+#include <binder/RpcTransportTls.h>
+#include <unistd.h>
+#include <string>
+#include <vector>
+
+#include <signal.h>
+
+#include "../BuildFlags.h"
+#include "../FdTrigger.h"
+#include "../RpcSocketAddress.h" // for testing preconnected clients
+#include "../RpcState.h"         // for debugging
+#include "../vm_sockets.h"       // for VMADDR_*
+#include "utils/Errors.h"
+
+namespace android {
+
+constexpr char kLocalInetAddress[] = "127.0.0.1";
+
+enum class RpcSecurity { RAW, TLS };
+
+static inline std::vector<RpcSecurity> RpcSecurityValues() {
+    return {RpcSecurity::RAW, RpcSecurity::TLS};
+}
+
+enum class SocketType {
+    PRECONNECTED,
+    UNIX,
+    VSOCK,
+    INET,
+};
+static inline std::string PrintToString(SocketType socketType) {
+    switch (socketType) {
+        case SocketType::PRECONNECTED:
+            return "preconnected_uds";
+        case SocketType::UNIX:
+            return "unix_domain_socket";
+        case SocketType::VSOCK:
+            return "vm_socket";
+        case SocketType::INET:
+            return "inet_socket";
+        default:
+            LOG_ALWAYS_FATAL("Unknown socket type");
+            return "";
+    }
+}
+
+struct BinderRpcOptions {
+    size_t numThreads = 1;
+    size_t numSessions = 1;
+    size_t numIncomingConnections = 0;
+    size_t numOutgoingConnections = SIZE_MAX;
+    RpcSession::FileDescriptorTransportMode clientFileDescriptorTransportMode =
+            RpcSession::FileDescriptorTransportMode::NONE;
+    std::vector<RpcSession::FileDescriptorTransportMode>
+            serverSupportedFileDescriptorTransportModes = {
+                    RpcSession::FileDescriptorTransportMode::NONE};
+
+    // If true, connection failures will result in `ProcessSession::sessions` being empty
+    // instead of a fatal error.
+    bool allowConnectFailure = false;
+};
+
+static inline void writeString(android::base::borrowed_fd fd, std::string_view str) {
+    uint64_t length = str.length();
+    CHECK(android::base::WriteFully(fd, &length, sizeof(length)));
+    CHECK(android::base::WriteFully(fd, str.data(), str.length()));
+}
+
+static inline std::string readString(android::base::borrowed_fd fd) {
+    uint64_t length;
+    CHECK(android::base::ReadFully(fd, &length, sizeof(length)));
+    std::string ret(length, '\0');
+    CHECK(android::base::ReadFully(fd, ret.data(), length));
+    return ret;
+}
+
+static inline void writeToFd(android::base::borrowed_fd fd, const Parcelable& parcelable) {
+    Parcel parcel;
+    CHECK_EQ(OK, parcelable.writeToParcel(&parcel));
+    writeString(fd, std::string(reinterpret_cast<const char*>(parcel.data()), parcel.dataSize()));
+}
+
+template <typename T>
+static inline T readFromFd(android::base::borrowed_fd fd) {
+    std::string data = readString(fd);
+    Parcel parcel;
+    CHECK_EQ(OK, parcel.setData(reinterpret_cast<const uint8_t*>(data.data()), data.size()));
+    T object;
+    CHECK_EQ(OK, object.readFromParcel(&parcel));
+    return object;
+}
+
+static inline std::unique_ptr<RpcTransportCtxFactory> newFactory(
+        RpcSecurity rpcSecurity, std::shared_ptr<RpcCertificateVerifier> verifier = nullptr,
+        std::unique_ptr<RpcAuth> auth = nullptr) {
+    switch (rpcSecurity) {
+        case RpcSecurity::RAW:
+            return RpcTransportCtxFactoryRaw::make();
+        case RpcSecurity::TLS: {
+            if (verifier == nullptr) {
+                verifier = std::make_shared<RpcCertificateVerifierSimple>();
+            }
+            if (auth == nullptr) {
+                auth = std::make_unique<RpcAuthSelfSigned>();
+            }
+            return RpcTransportCtxFactoryTls::make(std::move(verifier), std::move(auth));
+        }
+        default:
+            LOG_ALWAYS_FATAL("Unknown RpcSecurity %d", rpcSecurity);
+    }
+}
+
+// Create an FD that returns `contents` when read.
+static inline base::unique_fd mockFileDescriptor(std::string contents) {
+    android::base::unique_fd readFd, writeFd;
+    CHECK(android::base::Pipe(&readFd, &writeFd)) << strerror(errno);
+    RpcMaybeThread([writeFd = std::move(writeFd), contents = std::move(contents)]() {
+        signal(SIGPIPE, SIG_IGN); // ignore possible SIGPIPE from the write
+        if (!WriteStringToFd(contents, writeFd)) {
+            int savedErrno = errno;
+            LOG_ALWAYS_FATAL_IF(EPIPE != savedErrno, "mockFileDescriptor write failed: %s",
+                                strerror(savedErrno));
+        }
+    }).detach();
+    return readFd;
+}
+
+using android::binder::Status;
+
+class MyBinderRpcSession : public BnBinderRpcSession {
+public:
+    static std::atomic<int32_t> gNum;
+
+    MyBinderRpcSession(const std::string& name) : mName(name) { gNum++; }
+    Status getName(std::string* name) override {
+        *name = mName;
+        return Status::ok();
+    }
+    ~MyBinderRpcSession() { gNum--; }
+
+private:
+    std::string mName;
+};
+
+class MyBinderRpcCallback : public BnBinderRpcCallback {
+    Status sendCallback(const std::string& value) {
+        RpcMutexUniqueLock _l(mMutex);
+        mValues.push_back(value);
+        _l.unlock();
+        mCv.notify_one();
+        return Status::ok();
+    }
+    Status sendOnewayCallback(const std::string& value) { return sendCallback(value); }
+
+public:
+    RpcMutex mMutex;
+    RpcConditionVariable mCv;
+    std::vector<std::string> mValues;
+};
+
+class MyBinderRpcTest : public BnBinderRpcTest {
+public:
+    wp<RpcServer> server;
+    int port = 0;
+
+    Status sendString(const std::string& str) override {
+        (void)str;
+        return Status::ok();
+    }
+    Status doubleString(const std::string& str, std::string* strstr) override {
+        *strstr = str + str;
+        return Status::ok();
+    }
+    Status getClientPort(int* out) override {
+        *out = port;
+        return Status::ok();
+    }
+    Status countBinders(std::vector<int32_t>* out) override {
+        sp<RpcServer> spServer = server.promote();
+        if (spServer == nullptr) {
+            return Status::fromExceptionCode(Status::EX_NULL_POINTER);
+        }
+        out->clear();
+        for (auto session : spServer->listSessions()) {
+            size_t count = session->state()->countBinders();
+            out->push_back(count);
+        }
+        return Status::ok();
+    }
+    Status getNullBinder(sp<IBinder>* out) override {
+        out->clear();
+        return Status::ok();
+    }
+    Status pingMe(const sp<IBinder>& binder, int32_t* out) override {
+        if (binder == nullptr) {
+            std::cout << "Received null binder!" << std::endl;
+            return Status::fromExceptionCode(Status::EX_NULL_POINTER);
+        }
+        *out = binder->pingBinder();
+        return Status::ok();
+    }
+    Status repeatBinder(const sp<IBinder>& binder, sp<IBinder>* out) override {
+        *out = binder;
+        return Status::ok();
+    }
+    static sp<IBinder> mHeldBinder;
+    Status holdBinder(const sp<IBinder>& binder) override {
+        mHeldBinder = binder;
+        return Status::ok();
+    }
+    Status getHeldBinder(sp<IBinder>* held) override {
+        *held = mHeldBinder;
+        return Status::ok();
+    }
+    Status nestMe(const sp<IBinderRpcTest>& binder, int count) override {
+        if (count <= 0) return Status::ok();
+        return binder->nestMe(this, count - 1);
+    }
+    Status alwaysGiveMeTheSameBinder(sp<IBinder>* out) override {
+        static sp<IBinder> binder = new BBinder;
+        *out = binder;
+        return Status::ok();
+    }
+    Status openSession(const std::string& name, sp<IBinderRpcSession>* out) override {
+        *out = new MyBinderRpcSession(name);
+        return Status::ok();
+    }
+    Status getNumOpenSessions(int32_t* out) override {
+        *out = MyBinderRpcSession::gNum;
+        return Status::ok();
+    }
+
+    RpcMutex blockMutex;
+    Status lock() override {
+        blockMutex.lock();
+        return Status::ok();
+    }
+    Status unlockInMsAsync(int32_t ms) override {
+        usleep(ms * 1000);
+        blockMutex.unlock();
+        return Status::ok();
+    }
+    Status lockUnlock() override {
+        RpcMutexLockGuard _l(blockMutex);
+        return Status::ok();
+    }
+
+    Status sleepMs(int32_t ms) override {
+        usleep(ms * 1000);
+        return Status::ok();
+    }
+
+    Status sleepMsAsync(int32_t ms) override {
+        // In-process binder calls are asynchronous, but the call to this method
+        // is synchronous wrt its client. This in/out-process threading model
+        // diffentiation is a classic binder leaky abstraction (for better or
+        // worse) and is preserved here the way binder sockets plugs itself
+        // into BpBinder, as nothing is changed at the higher levels
+        // (IInterface) which result in this behavior.
+        return sleepMs(ms);
+    }
+
+    Status doCallback(const sp<IBinderRpcCallback>& callback, bool oneway, bool delayed,
+                      const std::string& value) override {
+        if (callback == nullptr) {
+            return Status::fromExceptionCode(Status::EX_NULL_POINTER);
+        }
+
+        if (delayed) {
+            RpcMaybeThread([=]() {
+                ALOGE("Executing delayed callback: '%s'", value.c_str());
+                Status status = doCallback(callback, oneway, false, value);
+                ALOGE("Delayed callback status: '%s'", status.toString8().c_str());
+            }).detach();
+            return Status::ok();
+        }
+
+        if (oneway) {
+            return callback->sendOnewayCallback(value);
+        }
+
+        return callback->sendCallback(value);
+    }
+
+    Status doCallbackAsync(const sp<IBinderRpcCallback>& callback, bool oneway, bool delayed,
+                           const std::string& value) override {
+        return doCallback(callback, oneway, delayed, value);
+    }
+
+    Status die(bool cleanup) override {
+        if (cleanup) {
+            exit(1);
+        } else {
+            _exit(1);
+        }
+    }
+
+    Status scheduleShutdown() override {
+        sp<RpcServer> strongServer = server.promote();
+        if (strongServer == nullptr) {
+            return Status::fromExceptionCode(Status::EX_NULL_POINTER);
+        }
+        RpcMaybeThread([=] {
+            LOG_ALWAYS_FATAL_IF(!strongServer->shutdown(), "Could not shutdown");
+        }).detach();
+        return Status::ok();
+    }
+
+    Status useKernelBinderCallingId() override {
+        // this is WRONG! It does not make sense when using RPC binder, and
+        // because it is SO wrong, and so much code calls this, it should abort!
+
+        if constexpr (kEnableKernelIpc) {
+            (void)IPCThreadState::self()->getCallingPid();
+        }
+        return Status::ok();
+    }
+
+    Status echoAsFile(const std::string& content, android::os::ParcelFileDescriptor* out) override {
+        out->reset(mockFileDescriptor(content));
+        return Status::ok();
+    }
+
+    Status concatFiles(const std::vector<android::os::ParcelFileDescriptor>& files,
+                       android::os::ParcelFileDescriptor* out) override {
+        std::string acc;
+        for (const auto& file : files) {
+            std::string result;
+            CHECK(android::base::ReadFdToString(file.get(), &result));
+            acc.append(result);
+        }
+        out->reset(mockFileDescriptor(acc));
+        return Status::ok();
+    }
+};
+
+} // namespace android
diff --git a/libs/binder/tests/binderRpcTestService.cpp b/libs/binder/tests/binderRpcTestService.cpp
new file mode 100644
index 0000000..31eb5da
--- /dev/null
+++ b/libs/binder/tests/binderRpcTestService.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "binderRpcTestCommon.h"
+
+using namespace android;
+
+int main(int argc, const char* argv[]) {
+    LOG_ALWAYS_FATAL_IF(argc != 3, "Invalid number of arguments: %d", argc);
+    base::unique_fd writeEnd(atoi(argv[1]));
+    base::unique_fd readEnd(atoi(argv[2]));
+
+    auto serverConfig = readFromFd<BinderRpcTestServerConfig>(readEnd);
+    auto socketType = static_cast<SocketType>(serverConfig.socketType);
+    auto rpcSecurity = static_cast<RpcSecurity>(serverConfig.rpcSecurity);
+
+    std::vector<RpcSession::FileDescriptorTransportMode>
+            serverSupportedFileDescriptorTransportModes;
+    for (auto mode : serverConfig.serverSupportedFileDescriptorTransportModes) {
+        serverSupportedFileDescriptorTransportModes.push_back(
+                static_cast<RpcSession::FileDescriptorTransportMode>(mode));
+    }
+
+    auto certVerifier = std::make_shared<RpcCertificateVerifierSimple>();
+    sp<RpcServer> server = RpcServer::make(newFactory(rpcSecurity, certVerifier));
+
+    server->setProtocolVersion(serverConfig.serverVersion);
+    server->setMaxThreads(serverConfig.numThreads);
+    server->setSupportedFileDescriptorTransportModes(serverSupportedFileDescriptorTransportModes);
+
+    unsigned int outPort = 0;
+
+    switch (socketType) {
+        case SocketType::PRECONNECTED:
+            [[fallthrough]];
+        case SocketType::UNIX:
+            CHECK_EQ(OK, server->setupUnixDomainServer(serverConfig.addr.c_str()))
+                    << serverConfig.addr;
+            break;
+        case SocketType::VSOCK:
+            CHECK_EQ(OK, server->setupVsockServer(serverConfig.vsockPort));
+            break;
+        case SocketType::INET: {
+            CHECK_EQ(OK, server->setupInetServer(kLocalInetAddress, 0, &outPort));
+            CHECK_NE(0, outPort);
+            break;
+        }
+        default:
+            LOG_ALWAYS_FATAL("Unknown socket type");
+    }
+
+    BinderRpcTestServerInfo serverInfo;
+    serverInfo.port = static_cast<int64_t>(outPort);
+    serverInfo.cert.data = server->getCertificate(RpcCertificateFormat::PEM);
+    writeToFd(writeEnd, serverInfo);
+    auto clientInfo = readFromFd<BinderRpcTestClientInfo>(readEnd);
+
+    if (rpcSecurity == RpcSecurity::TLS) {
+        for (const auto& clientCert : clientInfo.certs) {
+            CHECK_EQ(OK,
+                     certVerifier->addTrustedPeerCertificate(RpcCertificateFormat::PEM,
+                                                             clientCert.data));
+        }
+    }
+
+    server->setPerSessionRootObject([&](const void* addrPtr, size_t len) {
+        // UNIX sockets with abstract addresses return
+        // sizeof(sa_family_t)==2 in addrlen
+        CHECK_GE(len, sizeof(sa_family_t));
+        const sockaddr* addr = reinterpret_cast<const sockaddr*>(addrPtr);
+        sp<MyBinderRpcTest> service = sp<MyBinderRpcTest>::make();
+        switch (addr->sa_family) {
+            case AF_UNIX:
+                // nothing to save
+                break;
+            case AF_VSOCK:
+                CHECK_EQ(len, sizeof(sockaddr_vm));
+                service->port = reinterpret_cast<const sockaddr_vm*>(addr)->svm_port;
+                break;
+            case AF_INET:
+                CHECK_EQ(len, sizeof(sockaddr_in));
+                service->port = ntohs(reinterpret_cast<const sockaddr_in*>(addr)->sin_port);
+                break;
+            case AF_INET6:
+                CHECK_EQ(len, sizeof(sockaddr_in));
+                service->port = ntohs(reinterpret_cast<const sockaddr_in6*>(addr)->sin6_port);
+                break;
+            default:
+                LOG_ALWAYS_FATAL("Unrecognized address family %d", addr->sa_family);
+        }
+        service->server = server;
+        return service;
+    });
+
+    server->join();
+
+    // Another thread calls shutdown. Wait for it to complete.
+    (void)server->shutdown();
+
+    return 0;
+}
diff --git a/libs/binder/tests/parcel_fuzzer/Android.bp b/libs/binder/tests/parcel_fuzzer/Android.bp
index 2ca6ebd..0210237 100644
--- a/libs/binder/tests/parcel_fuzzer/Android.bp
+++ b/libs/binder/tests/parcel_fuzzer/Android.bp
@@ -7,6 +7,22 @@
     default_applicable_licenses: ["frameworks_native_license"],
 }
 
+aidl_interface {
+    name: "binderReadParcelIface",
+    host_supported: true,
+    unstable: true,
+    srcs: [
+        "EmptyParcelable.aidl",
+        "SingleDataParcelable.aidl",
+        "GenericDataParcelable.aidl",
+    ],
+    backend: {
+        java: {
+            enabled: false,
+        },
+    },
+}
+
 cc_fuzz {
     name: "binder_parcel_fuzzer",
     host_supported: true,
@@ -29,6 +45,8 @@
         "libcutils",
         "libhidlbase",
         "liblog",
+        "binderReadParcelIface-cpp",
+        "binderReadParcelIface-ndk",
     ],
 
     target: {
diff --git a/libs/binder/tests/parcel_fuzzer/EmptyParcelable.aidl b/libs/binder/tests/parcel_fuzzer/EmptyParcelable.aidl
new file mode 100644
index 0000000..96d6223
--- /dev/null
+++ b/libs/binder/tests/parcel_fuzzer/EmptyParcelable.aidl
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+parcelable EmptyParcelable{
+}
\ No newline at end of file
diff --git a/libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl b/libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl
new file mode 100644
index 0000000..fc2542b
--- /dev/null
+++ b/libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+parcelable GenericDataParcelable {
+    int data;
+    float majorVersion;
+    float minorVersion;
+    IBinder binder;
+    ParcelFileDescriptor fileDescriptor;
+    int[] array;
+}
\ No newline at end of file
diff --git a/libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl b/libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl
new file mode 100644
index 0000000..d62891b
--- /dev/null
+++ b/libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+parcelable SingleDataParcelable{
+   int data;
+}
\ No newline at end of file
diff --git a/libs/binder/tests/parcel_fuzzer/binder.cpp b/libs/binder/tests/parcel_fuzzer/binder.cpp
index 7059d30..9dac2c9 100644
--- a/libs/binder/tests/parcel_fuzzer/binder.cpp
+++ b/libs/binder/tests/parcel_fuzzer/binder.cpp
@@ -16,6 +16,9 @@
 #define FUZZ_LOG_TAG "binder"
 
 #include "binder.h"
+#include "EmptyParcelable.h"
+#include "GenericDataParcelable.h"
+#include "SingleDataParcelable.h"
 #include "util.h"
 
 #include <android-base/hex.h>
@@ -354,6 +357,24 @@
         status_t status = p.compareDataInRange(thisOffset, p, otherOffset, length, &result);
         FUZZ_LOG() << " status: " << status  << " result: " << result;
     },
+    [] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
+        FUZZ_LOG() << "about to call readFromParcel() with status for EmptyParcelable";
+        EmptyParcelable emptyParcelable{};
+        status_t status = emptyParcelable.readFromParcel(&p);
+        FUZZ_LOG() << " status: " << status;
+    },
+    [] (const ::android::Parcel& p , FuzzedDataProvider& /*provider*/) {
+        FUZZ_LOG() << "about to call readFromParcel() with status for SingleDataParcelable";
+        SingleDataParcelable singleDataParcelable;
+        status_t status = singleDataParcelable.readFromParcel(&p);
+        FUZZ_LOG() <<" status: " << status;
+    },
+    [] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
+        FUZZ_LOG() << "about to call readFromParcel() with status for GenericDataParcelable";
+        GenericDataParcelable genericDataParcelable;
+        status_t status = genericDataParcelable.readFromParcel(&p);
+        FUZZ_LOG() <<" status: " << status;
+    },
 };
 // clang-format on
 #pragma clang diagnostic pop
diff --git a/libs/binder/tests/parcel_fuzzer/binder_ndk.cpp b/libs/binder/tests/parcel_fuzzer/binder_ndk.cpp
index 26d6770..af773a0 100644
--- a/libs/binder/tests/parcel_fuzzer/binder_ndk.cpp
+++ b/libs/binder/tests/parcel_fuzzer/binder_ndk.cpp
@@ -16,6 +16,9 @@
 #define FUZZ_LOG_TAG "binder_ndk"
 
 #include "binder_ndk.h"
+#include "aidl/EmptyParcelable.h"
+#include "aidl/GenericDataParcelable.h"
+#include "aidl/SingleDataParcelable.h"
 
 #include <android/binder_parcel_utils.h>
 #include <android/binder_parcelable_utils.h>
@@ -177,5 +180,24 @@
         PARCEL_READ(std::array<ndk::ScopedFileDescriptor COMMA 3>, ndk::AParcel_readData),
         PARCEL_READ(std::array<std::shared_ptr<ISomeInterface> COMMA 3>, ndk::AParcel_readData),
 #undef COMMA
+
+        [](const NdkParcelAdapter& p, FuzzedDataProvider& /*provider*/) {
+            FUZZ_LOG() << "about to read parcel using readFromParcel for EmptyParcelable";
+            aidl::EmptyParcelable emptyParcelable;
+            binder_status_t status = emptyParcelable.readFromParcel(p.aParcel());
+            FUZZ_LOG() << "status: " << status;
+        },
+        [](const NdkParcelAdapter& p, FuzzedDataProvider& /*provider*/) {
+            FUZZ_LOG() << "about to read parcel using readFromParcel for SingleDataParcelable";
+            aidl::SingleDataParcelable singleDataParcelable;
+            binder_status_t status = singleDataParcelable.readFromParcel(p.aParcel());
+            FUZZ_LOG() << "status: " << status;
+        },
+        [](const NdkParcelAdapter& p, FuzzedDataProvider& /*provider*/) {
+            FUZZ_LOG() << "about to read parcel using readFromParcel for GenericDataParcelable";
+            aidl::GenericDataParcelable genericDataParcelable;
+            binder_status_t status = genericDataParcelable.readFromParcel(p.aParcel());
+            FUZZ_LOG() << "status: " << status;
+        },
 };
 // clang-format on
diff --git a/libs/dumputils/dump_utils.cpp b/libs/dumputils/dump_utils.cpp
index 0f1a02a..a6585c5 100644
--- a/libs/dumputils/dump_utils.cpp
+++ b/libs/dumputils/dump_utils.cpp
@@ -85,7 +85,20 @@
 
 /* list of hal interface to dump containing process during native dumps */
 static const std::vector<std::string> aidl_interfaces_to_dump {
+        "android.hardware.automotive.audiocontrol.IAudioControl",
+        "android.hardware.automotive.evs.IEvsEnumerator",
+        "android.hardware.biometrics.face.IBiometricsFace",
+        "android.hardware.biometrics.fingerprint.IBiometricsFingerprint",
         "android.hardware.camera.provider.ICameraProvider",
+        "android.hardware.drm.IDrmFactory",
+        "android.hardware.graphics.allocator.IAllocator",
+        "android.hardware.graphics.composer3.IComposer",
+        "android.hardware.health.IHealth",
+        "android.hardware.input.processor.IInputProcessor",
+        "android.hardware.neuralnetworks.IDevice",
+        "android.hardware.power.IPower",
+        "android.hardware.power.stats.IPowerStats",
+        "android.hardware.sensors.ISensors",
 };
 
 /* list of extra hal interfaces to dump containing process during native dumps */
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 9086f1c..d098e3a 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -354,7 +354,7 @@
     },
 
     whole_static_libs: [
-        "LibGuiProperties",
+        "libLibGuiProperties",
     ],
 
     shared_libs: [
diff --git a/libs/gui/BLASTBufferQueue.cpp b/libs/gui/BLASTBufferQueue.cpp
index f340614..2212e58 100644
--- a/libs/gui/BLASTBufferQueue.cpp
+++ b/libs/gui/BLASTBufferQueue.cpp
@@ -159,7 +159,6 @@
     id++;
     mBufferItemConsumer->setName(String8(consumerName.c_str()));
     mBufferItemConsumer->setFrameAvailableListener(this);
-    mBufferItemConsumer->setBufferFreedListener(this);
 
     ComposerServiceAIDL::getComposerService()->getMaxAcquiredBufferCount(&mMaxAcquiredBuffers);
     mBufferItemConsumer->setMaxAcquiredBufferCount(mMaxAcquiredBuffers);
@@ -288,18 +287,17 @@
 
                 // We need to check if we were waiting for a transaction callback in order to
                 // process any pending buffers and unblock. It's possible to get transaction
-                // callbacks for previous requests so we need to ensure the frame from this
-                // transaction callback matches the last acquired buffer. Since acquireNextBuffer
-                // will stop processing buffers when mWaitForTransactionCallback is set, we know
-                // that mLastAcquiredFrameNumber is the frame we're waiting on.
-                // We also want to check if mNextTransaction is null because it's possible another
+                // callbacks for previous requests so we need to ensure that there are no pending
+                // frame numbers that were in a sync. We remove the frame from mSyncedFrameNumbers
+                // set and then check if it's empty. If there are no more pending syncs, we can
+                // proceed with flushing the shadow queue.
+                // We also want to check if mSyncTransaction is null because it's possible another
                 // sync request came in while waiting, but it hasn't started processing yet. In that
                 // case, we don't actually want to flush the frames in between since they will get
                 // processed and merged with the sync transaction and released earlier than if they
                 // were sent to SF
-                if (mWaitForTransactionCallback && mSyncTransaction == nullptr &&
-                    currFrameNumber >= mLastAcquiredFrameNumber) {
-                    mWaitForTransactionCallback = false;
+                mSyncedFrameNumbers.erase(currFrameNumber);
+                if (mSyncedFrameNumbers.empty() && mSyncTransaction == nullptr) {
                     flushShadowQueue();
                 }
             } else {
@@ -417,9 +415,11 @@
         const auto releasedBuffer = mPendingRelease.front();
         mPendingRelease.pop_front();
         releaseBuffer(releasedBuffer.callbackId, releasedBuffer.releaseFence);
-        // Don't process the transactions here if mWaitForTransactionCallback is set. Instead, let
-        // onFrameAvailable handle processing them since it will merge with the syncTransaction.
-        if (!mWaitForTransactionCallback) {
+        // Don't process the transactions here if mSyncedFrameNumbers is not empty. That means
+        // are still transactions that have sync buffers in them that have not been applied or
+        // dropped. Instead, let onFrameAvailable handle processing them since it will merge with
+        // the syncTransaction.
+        if (mSyncedFrameNumbers.empty()) {
             acquireNextBufferLocked(std::nullopt);
         }
     }
@@ -443,6 +443,9 @@
     BQA_LOGV("released %s", callbackId.to_string().c_str());
     mBufferItemConsumer->releaseBuffer(it->second, releaseFence);
     mSubmitted.erase(it);
+    // Remove the frame number from mSyncedFrameNumbers since we can get a release callback
+    // without getting a transaction committed if the buffer was dropped.
+    mSyncedFrameNumbers.erase(callbackId.framenumber);
 }
 
 void BLASTBufferQueue::acquireNextBufferLocked(
@@ -609,7 +612,7 @@
 }
 
 void BLASTBufferQueue::flushAndWaitForFreeBuffer(std::unique_lock<std::mutex>& lock) {
-    if (mWaitForTransactionCallback && mNumFrameAvailable > 0) {
+    if (!mSyncedFrameNumbers.empty() && mNumFrameAvailable > 0) {
         // We are waiting on a previous sync's transaction callback so allow another sync
         // transaction to proceed.
         //
@@ -636,6 +639,8 @@
 void BLASTBufferQueue::onFrameAvailable(const BufferItem& item) {
     std::function<void(SurfaceComposerClient::Transaction*)> prevCallback = nullptr;
     SurfaceComposerClient::Transaction* prevTransaction = nullptr;
+    bool waitForTransactionCallback = !mSyncedFrameNumbers.empty();
+
     {
         BBQ_TRACE();
         std::unique_lock _lock{mMutex};
@@ -667,7 +672,7 @@
 
         // add to shadow queue
         mNumFrameAvailable++;
-        if (mWaitForTransactionCallback && mNumFrameAvailable >= 2) {
+        if (waitForTransactionCallback && mNumFrameAvailable >= 2) {
             acquireAndReleaseBuffer();
         }
         ATRACE_INT(mQueuedBufferTrace.c_str(),
@@ -684,14 +689,14 @@
             incStrong((void*)transactionCommittedCallbackThunk);
             mSyncTransaction->addTransactionCommittedCallback(transactionCommittedCallbackThunk,
                                                               static_cast<void*>(this));
-            mWaitForTransactionCallback = true;
+            mSyncedFrameNumbers.emplace(item.mFrameNumber);
             if (mAcquireSingleBuffer) {
                 prevCallback = mTransactionReadyCallback;
                 prevTransaction = mSyncTransaction;
                 mTransactionReadyCallback = nullptr;
                 mSyncTransaction = nullptr;
             }
-        } else if (!mWaitForTransactionCallback) {
+        } else if (!waitForTransactionCallback) {
             acquireNextBufferLocked(std::nullopt);
         }
     }
@@ -1098,9 +1103,9 @@
     }
 
     // Clear sync states
-    if (mWaitForTransactionCallback) {
-        BQA_LOGD("mWaitForTransactionCallback cleared");
-        mWaitForTransactionCallback = false;
+    if (!mSyncedFrameNumbers.empty()) {
+        BQA_LOGD("mSyncedFrameNumbers cleared");
+        mSyncedFrameNumbers.clear();
     }
 
     if (mSyncTransaction != nullptr) {
@@ -1114,7 +1119,6 @@
     if (mBufferItemConsumer != nullptr) {
         mBufferItemConsumer->abandon();
         mBufferItemConsumer->setFrameAvailableListener(nullptr);
-        mBufferItemConsumer->setBufferFreedListener(nullptr);
     }
     mBufferItemConsumer = nullptr;
     mConsumer = nullptr;
diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index 7f0f638..bb66085 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -63,6 +63,7 @@
         frameRate(0.0f),
         frameRateCompatibility(ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_DEFAULT),
         changeFrameRateStrategy(ANATIVEWINDOW_CHANGE_FRAME_RATE_ONLY_IF_SEAMLESS),
+        defaultFrameRateCompatibility(ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_DEFAULT),
         fixedTransformHint(ui::Transform::ROT_INVALID),
         autoRefresh(false),
         isTrustedOverlay(false),
@@ -137,6 +138,7 @@
     SAFE_PARCEL(output.writeFloat, frameRate);
     SAFE_PARCEL(output.writeByte, frameRateCompatibility);
     SAFE_PARCEL(output.writeByte, changeFrameRateStrategy);
+    SAFE_PARCEL(output.writeByte, defaultFrameRateCompatibility);
     SAFE_PARCEL(output.writeUint32, fixedTransformHint);
     SAFE_PARCEL(output.writeBool, autoRefresh);
     SAFE_PARCEL(output.writeBool, dimmingEnabled);
@@ -257,6 +259,7 @@
     SAFE_PARCEL(input.readFloat, &frameRate);
     SAFE_PARCEL(input.readByte, &frameRateCompatibility);
     SAFE_PARCEL(input.readByte, &changeFrameRateStrategy);
+    SAFE_PARCEL(input.readByte, &defaultFrameRateCompatibility);
     SAFE_PARCEL(input.readUint32, &tmpUint32);
     fixedTransformHint = static_cast<ui::Transform::RotationFlags>(tmpUint32);
     SAFE_PARCEL(input.readBool, &autoRefresh);
@@ -573,6 +576,10 @@
         borderWidth = other.borderWidth;
         borderColor = other.borderColor;
     }
+    if (other.what & eDefaultFrameRateCompatibilityChanged) {
+        what |= eDefaultFrameRateCompatibilityChanged;
+        defaultFrameRateCompatibility = other.defaultFrameRateCompatibility;
+    }
     if (other.what & eFrameRateSelectionPriority) {
         what |= eFrameRateSelectionPriority;
         frameRateSelectionPriority = other.frameRateSelectionPriority;
@@ -664,29 +671,44 @@
     changes |= !other.focusRequests.empty();
     focusRequests.insert(focusRequests.end(), std::make_move_iterator(other.focusRequests.begin()),
                          std::make_move_iterator(other.focusRequests.end()));
-    changes |= other.syncInputWindows && !syncInputWindows;
-    syncInputWindows |= other.syncInputWindows;
+    changes |= !other.windowInfosReportedListeners.empty();
+    windowInfosReportedListeners.insert(other.windowInfosReportedListeners.begin(),
+                                        other.windowInfosReportedListeners.end());
     return changes;
 }
 
 bool InputWindowCommands::empty() const {
-    return focusRequests.empty() && !syncInputWindows;
+    return focusRequests.empty() && windowInfosReportedListeners.empty();
 }
 
 void InputWindowCommands::clear() {
     focusRequests.clear();
-    syncInputWindows = false;
+    windowInfosReportedListeners.clear();
 }
 
 status_t InputWindowCommands::write(Parcel& output) const {
     SAFE_PARCEL(output.writeParcelableVector, focusRequests);
-    SAFE_PARCEL(output.writeBool, syncInputWindows);
+
+    SAFE_PARCEL(output.writeInt32, windowInfosReportedListeners.size());
+    for (const auto& listener : windowInfosReportedListeners) {
+        SAFE_PARCEL(output.writeStrongBinder, listener);
+    }
+
     return NO_ERROR;
 }
 
 status_t InputWindowCommands::read(const Parcel& input) {
     SAFE_PARCEL(input.readParcelableVector, &focusRequests);
-    SAFE_PARCEL(input.readBool, &syncInputWindows);
+
+    int listenerSize = 0;
+    SAFE_PARCEL_READ_SIZE(input.readInt32, &listenerSize, input.dataSize());
+    windowInfosReportedListeners.reserve(listenerSize);
+    for (int i = 0; i < listenerSize; i++) {
+        sp<gui::IWindowInfosReportedListener> listener;
+        SAFE_PARCEL(input.readStrongBinder, &listener);
+        windowInfosReportedListeners.insert(listener);
+    }
+
     return NO_ERROR;
 }
 
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 9bc159d..16dbc92 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -19,6 +19,7 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <android/gui/BnWindowInfosReportedListener.h>
 #include <android/gui/DisplayState.h>
 #include <android/gui/ISurfaceComposerClient.h>
 #include <android/gui/IWindowInfosListener.h>
@@ -635,7 +636,8 @@
         mDesiredPresentTime(other.mDesiredPresentTime),
         mIsAutoTimestamp(other.mIsAutoTimestamp),
         mFrameTimelineInfo(other.mFrameTimelineInfo),
-        mApplyToken(other.mApplyToken) {
+        mApplyToken(other.mApplyToken),
+        mWindowInfosReportedEvent(other.mWindowInfosReportedEvent) {
     mDisplayStates = other.mDisplayStates;
     mComposerStates = other.mComposerStates;
     mInputWindowCommands = other.mInputWindowCommands;
@@ -660,6 +662,7 @@
 
 
 status_t SurfaceComposerClient::Transaction::readFromParcel(const Parcel* parcel) {
+    const uint64_t transactionId = parcel->readUint64();
     const uint32_t forceSynchronous = parcel->readUint32();
     const uint32_t transactionNestCount = parcel->readUint32();
     const bool animation = parcel->readBool();
@@ -737,6 +740,7 @@
     inputWindowCommands.read(*parcel);
 
     // Parsing was successful. Update the object.
+    mId = transactionId;
     mForceSynchronous = forceSynchronous;
     mTransactionNestCount = transactionNestCount;
     mAnimation = animation;
@@ -768,6 +772,7 @@
 
     const_cast<SurfaceComposerClient::Transaction*>(this)->cacheBuffers();
 
+    parcel->writeUint64(mId);
     parcel->writeUint32(mForceSynchronous);
     parcel->writeUint32(mTransactionNestCount);
     parcel->writeBool(mAnimation);
@@ -876,6 +881,9 @@
     mEarlyWakeupStart = mEarlyWakeupStart || other.mEarlyWakeupStart;
     mEarlyWakeupEnd = mEarlyWakeupEnd || other.mEarlyWakeupEnd;
     mApplyToken = other.mApplyToken;
+    if (other.mWindowInfosReportedEvent) {
+        mWindowInfosReportedEvent = std::move(other.mWindowInfosReportedEvent);
+    }
 
     mergeFrameTimelineInfo(mFrameTimelineInfo, other.mFrameTimelineInfo);
 
@@ -898,6 +906,7 @@
     mIsAutoTimestamp = true;
     clearFrameTimelineInfo(mFrameTimelineInfo);
     mApplyToken = nullptr;
+    mWindowInfosReportedEvent = nullptr;
 }
 
 uint64_t SurfaceComposerClient::Transaction::getId() {
@@ -1044,6 +1053,10 @@
                             hasListenerCallbacks, listenerCallbacks, mId);
     mId = generateId();
 
+    if (mWindowInfosReportedEvent && !mWindowInfosReportedEvent->wait()) {
+        ALOGE("Timed out waiting for window infos to be reported.");
+    }
+
     // Clear the current states and flags
     clear();
 
@@ -1730,8 +1743,25 @@
     return *this;
 }
 
+class NotifyWindowInfosReported : public gui::BnWindowInfosReportedListener {
+public:
+    NotifyWindowInfosReported(
+            std::shared_ptr<SurfaceComposerClient::Event> windowInfosReportedEvent)
+          : mWindowInfosReportedEvent(windowInfosReportedEvent) {}
+
+    binder::Status onWindowInfosReported() {
+        mWindowInfosReportedEvent->set();
+        return binder::Status::ok();
+    }
+
+private:
+    std::shared_ptr<SurfaceComposerClient::Event> mWindowInfosReportedEvent;
+};
+
 SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::syncInputWindows() {
-    mInputWindowCommands.syncInputWindows = true;
+    mWindowInfosReportedEvent = std::make_shared<Event>();
+    mInputWindowCommands.windowInfosReportedListeners.insert(
+            sp<NotifyWindowInfosReported>::make(mWindowInfosReportedEvent));
     return *this;
 }
 
@@ -1838,6 +1868,19 @@
     return *this;
 }
 
+SurfaceComposerClient::Transaction&
+SurfaceComposerClient::Transaction::setDefaultFrameRateCompatibility(const sp<SurfaceControl>& sc,
+                                                                     int8_t compatibility) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eDefaultFrameRateCompatibilityChanged;
+    s->defaultFrameRateCompatibility = compatibility;
+    return *this;
+}
+
 SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFixedTransformHint(
         const sp<SurfaceControl>& sc, int32_t fixedTransformHint) {
     layer_state_t* s = getLayerState(sc);
@@ -2806,4 +2849,17 @@
     }
 }
 
+// ---------------------------------------------------------------------------------
+
+void SurfaceComposerClient::Event::set() {
+    std::lock_guard<std::mutex> lock(mMutex);
+    mComplete = true;
+    mConditionVariable.notify_all();
+}
+
+bool SurfaceComposerClient::Event::wait() {
+    std::unique_lock<std::mutex> lock(mMutex);
+    return mConditionVariable.wait_for(lock, sTimeout, [this] { return mComplete; });
+}
+
 } // namespace android
diff --git a/libs/gui/fuzzer/Android.bp b/libs/gui/fuzzer/Android.bp
new file mode 100644
index 0000000..952b6a9
--- /dev/null
+++ b/libs/gui/fuzzer/Android.bp
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+cc_defaults {
+    name: "libgui_fuzzer_defaults",
+    static_libs: [
+        "android.hidl.token@1.0-utils",
+        "libbinder_random_parcel",
+        "libgui_aidl_static",
+        "libgui_window_info_static",
+        "libpdx",
+        "libgmock",
+        "libgui_mocks",
+        "libgmock_ndk",
+        "libgmock_main",
+        "libgtest_ndk_c++",
+        "libgmock_main_ndk",
+        "librenderengine_mocks",
+        "perfetto_trace_protos",
+        "libcompositionengine_mocks",
+        "perfetto_trace_protos",
+    ],
+    shared_libs: [
+        "android.hardware.configstore@1.0",
+        "android.hardware.configstore-utils",
+        "android.hardware.graphics.bufferqueue@1.0",
+        "android.hardware.graphics.bufferqueue@2.0",
+        "android.hardware.power-V2-cpp",
+        "android.hidl.token@1.0",
+        "libSurfaceFlingerProp",
+        "libgui",
+        "libbase",
+        "liblog",
+        "libEGL",
+        "libGLESv2",
+        "libbinder",
+        "libcutils",
+        "libhidlbase",
+        "libinput",
+        "libui",
+        "libutils",
+        "libnativewindow",
+        "libvndksupport",
+        "libbufferhubqueue",
+    ],
+    header_libs: [
+        "libdvr_headers",
+        "libui_fuzzableDataspaces_headers",
+    ],
+    fuzz_config: {
+        cc: [
+            "android-media-fuzzing-reports@google.com",
+        ],
+        componentid: 155276,
+    },
+}
+
+cc_fuzz {
+    name: "libgui_surfaceComposer_fuzzer",
+    srcs: [
+        "libgui_surfaceComposer_fuzzer.cpp",
+    ],
+    defaults: [
+        "libgui_fuzzer_defaults",
+    ],
+}
diff --git a/libs/gui/fuzzer/README.md b/libs/gui/fuzzer/README.md
new file mode 100644
index 0000000..c9e8b65
--- /dev/null
+++ b/libs/gui/fuzzer/README.md
@@ -0,0 +1,42 @@
+# Fuzzers for Libgui
+
+## Table of contents
++ [libgui_surfaceComposer_fuzzer](#SurfaceComposer)
+
+# <a name="libgui_surfaceComposer_fuzzer"></a> Fuzzer for SurfaceComposer
+
+SurfaceComposer supports the following parameters:
+1. SurfaceWidth (parameter name:`width`)
+2. SurfaceHeight (parameter name:`height`)
+3. TransactionStateFlags (parameter name:`flags`)
+4. TransformHint (parameter name:`outTransformHint`)
+5. SurfacePixelFormat (parameter name:`format`)
+6. LayerId (parameter name:`outLayerId`)
+7. SurfaceComposerTags (parameter name:`surfaceTag`)
+8. PowerBoostID (parameter name:`boostId`)
+9. VsyncSource (parameter name:`vsyncSource`)
+10. EventRegistrationFlags (parameter name:`eventRegistration`)
+11. FrameRateCompatibility (parameter name:`frameRateCompatibility`)
+12. ChangeFrameRateStrategy (parameter name:`changeFrameRateStrategy`)
+13. HdrTypes (parameter name:`hdrTypes`)
+
+| Parameter| Valid Values| Configured Value|
+|------------- |-------------| ----- |
+|`surfaceTag` | 0.`BnSurfaceComposer::BOOT_FINISHED`, 1.`BnSurfaceComposer::CREATE_CONNECTION`, 2.`BnSurfaceComposer::GET_STATIC_DISPLAY_INFO`, 3.`BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION`, 4.`BnSurfaceComposer::CREATE_DISPLAY`, 5.`BnSurfaceComposer::DESTROY_DISPLAY`, 6.`BnSurfaceComposer::GET_PHYSICAL_DISPLAY_TOKEN`, 7.`BnSurfaceComposer::SET_TRANSACTION_STATE`, 8.`BnSurfaceComposer::AUTHENTICATE_SURFACE`, 9.`BnSurfaceComposer::GET_SUPPORTED_FRAME_TIMESTAMPS`, 10.`BnSurfaceComposer::GET_DISPLAY_STATE`, 11.`BnSurfaceComposer::CAPTURE_DISPLAY`, 12.`BnSurfaceComposer::CAPTURE_LAYERS`, 13.`BnSurfaceComposer::CLEAR_ANIMATION_FRAME_STATS`, 14.`BnSurfaceComposer::GET_ANIMATION_FRAME_STATS`, 15.`BnSurfaceComposer::SET_POWER_MODE`, 16.`BnSurfaceComposer::GET_DISPLAY_STATS`, 17.`BnSurfaceComposer::SET_ACTIVE_COLOR_MODE`, 18.`BnSurfaceComposer::ENABLE_VSYNC_INJECTIONS`, 19.`BnSurfaceComposer::INJECT_VSYNC`, 20.`BnSurfaceComposer::GET_LAYER_DEBUG_INFO`, 21.`BnSurfaceComposer::GET_COMPOSITION_PREFERENCE`, 22.`BnSurfaceComposer::GET_COLOR_MANAGEMENT`, 23.`BnSurfaceComposer::GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES`, 24.`BnSurfaceComposer::SET_DISPLAY_CONTENT_SAMPLING_ENABLED`, 25.`BnSurfaceComposer::GET_DISPLAYED_CONTENT_SAMPLE`, 26.`BnSurfaceComposer::GET_PROTECTED_CONTENT_SUPPORT`, 27.`BnSurfaceComposer::IS_WIDE_COLOR_DISPLAY`, 28.`BnSurfaceComposer::GET_DISPLAY_NATIVE_PRIMARIES`, 29.`BnSurfaceComposer::GET_PHYSICAL_DISPLAY_IDS`, 30.`BnSurfaceComposer::ADD_REGION_SAMPLING_LISTENER`, 31.`BnSurfaceComposer::REMOVE_REGION_SAMPLING_LISTENER`, 32.`BnSurfaceComposer::SET_DESIRED_DISPLAY_MODE_SPECS`, 33.`BnSurfaceComposer::GET_DESIRED_DISPLAY_MODE_SPECS`, 34.`BnSurfaceComposer::GET_DISPLAY_BRIGHTNESS_SUPPORT`, 35.`BnSurfaceComposer::SET_DISPLAY_BRIGHTNESS`, 36.`BnSurfaceComposer::CAPTURE_DISPLAY_BY_ID`, 37.`BnSurfaceComposer::NOTIFY_POWER_BOOST`, 38.`BnSurfaceComposer::SET_GLOBAL_SHADOW_SETTINGS`, 39.`BnSurfaceComposer::SET_AUTO_LOW_LATENCY_MODE`, 40.`BnSurfaceComposer::SET_GAME_CONTENT_TYPE`, 41.`BnSurfaceComposer::SET_FRAME_RATE`, 42.`BnSurfaceComposer::ACQUIRE_FRAME_RATE_FLEXIBILITY_TOKEN`, 43.`BnSurfaceComposer::SET_FRAME_TIMELINE_INFO`, 44.`BnSurfaceComposer::ADD_TRANSACTION_TRACE_LISTENER`, 45.`BnSurfaceComposer::GET_GPU_CONTEXT_PRIORITY`, 46.`BnSurfaceComposer::GET_MAX_ACQUIRED_BUFFER_COUNT`, 47.`BnSurfaceComposer::GET_DYNAMIC_DISPLAY_INFO`, 48.`BnSurfaceComposer::ADD_FPS_LISTENER`, 49.`BnSurfaceComposer::REMOVE_FPS_LISTENER`, 50.`BnSurfaceComposer::OVERRIDE_HDR_TYPES`, 51.`BnSurfaceComposer::ADD_HDR_LAYER_INFO_LISTENER`, 52.`BnSurfaceComposer::REMOVE_HDR_LAYER_INFO_LISTENER`, 53.`BnSurfaceComposer::ON_PULL_ATOM`, 54.`BnSurfaceComposer::ADD_TUNNEL_MODE_ENABLED_LISTENER`, 55.`BnSurfaceComposer::REMOVE_TUNNEL_MODE_ENABLED_LISTENER` | Value obtained from FuzzedDataProvider|
+|`boostId`| 0.`hardware::power::Boost::INTERACTION`, 1.`hardware::power::Boost::DISPLAY_UPDATE_IMMINENT`, 2.`hardware::power::Boost::ML_ACC`, 3.`hardware::power::Boost::AUDIO_LAUNCH`, 4.`hardware::power::Boost::CAMERA_LAUNCH`, 5.`hardware::power::Boost::CAMERA_SHOT` |Value obtained from FuzzedDataProvider|
+|`vsyncSource`| 0.`ISurfaceComposer::eVsyncSourceApp`, 1.`ISurfaceComposer::eVsyncSourceSurfaceFlinger`, |Value obtained from FuzzedDataProvider|
+|`eventRegistration`| 0.`ISurfaceComposer::EventRegistration::modeChanged`, 1.`ISurfaceComposer::EventRegistration::frameRateOverride` |Value obtained from FuzzedDataProvider|
+|`frameRateCompatibility`| 0.`ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_DEFAULT`, 1.`ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_FIXED_SOURCE` |Value obtained from FuzzedDataProvider|
+|`changeFrameRateStrategy`| 0.`ANATIVEWINDOW_CHANGE_FRAME_RATE_ONLY_IF_SEAMLESS`, 1.`ANATIVEWINDOW_CHANGE_FRAME_RATE_ALWAYS` |Value obtained from FuzzedDataProvider|
+|`hdrTypes`| 0.`ui::Hdr::DOLBY_VISION`, 1.`ui::Hdr::HDR10`, 2.`ui::Hdr::HLG`, 3.`ui::Hdr::HDR10_PLUS` |Value obtained from FuzzedDataProvider|
+
+#### Steps to run
+1. Build the fuzzer
+```
+  $ mm -j$(nproc) libgui_surfaceComposer_fuzzer
+```
+2. Run on device
+```
+  $ adb sync data
+  $ adb shell /data/fuzz/arm64/libgui_surfaceComposer_fuzzer/libgui_surfaceComposer_fuzzer
+```
diff --git a/libs/gui/fuzzer/libgui_fuzzer_utils.h b/libs/gui/fuzzer/libgui_fuzzer_utils.h
new file mode 100644
index 0000000..98e2ea3
--- /dev/null
+++ b/libs/gui/fuzzer/libgui_fuzzer_utils.h
@@ -0,0 +1,311 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <android/gui/BnRegionSamplingListener.h>
+#include <android/gui/BnSurfaceComposer.h>
+#include <android/gui/BnSurfaceComposerClient.h>
+#include <android/gui/IDisplayEventConnection.h>
+#include <android/gui/ISurfaceComposerClient.h>
+#include <fuzzer/FuzzedDataProvider.h>
+#include <gmock/gmock.h>
+#include <gui/BLASTBufferQueue.h>
+#include <gui/DisplayEventDispatcher.h>
+#include <gui/IGraphicBufferProducer.h>
+#include <gui/LayerDebugInfo.h>
+#include <gui/LayerState.h>
+#include <gui/bufferqueue/1.0/H2BGraphicBufferProducer.h>
+#include <gui/bufferqueue/2.0/H2BGraphicBufferProducer.h>
+#include <ui/fuzzer/FuzzableDataspaces.h>
+
+namespace android {
+
+constexpr uint32_t kOrientation[] = {
+        ui::Transform::ROT_0,  ui::Transform::FLIP_H,  ui::Transform::FLIP_V,
+        ui::Transform::ROT_90, ui::Transform::ROT_180, ui::Transform::ROT_270,
+};
+
+Rect getRect(FuzzedDataProvider* fdp) {
+    const int32_t left = fdp->ConsumeIntegral<int32_t>();
+    const int32_t top = fdp->ConsumeIntegral<int32_t>();
+    const int32_t right = fdp->ConsumeIntegral<int32_t>();
+    const int32_t bottom = fdp->ConsumeIntegral<int32_t>();
+    return Rect(left, top, right, bottom);
+}
+
+gui::DisplayBrightness getBrightness(FuzzedDataProvider* fdp) {
+    static constexpr float kMinBrightness = 0;
+    static constexpr float kMaxBrightness = 1;
+    gui::DisplayBrightness brightness;
+    brightness.sdrWhitePoint =
+            fdp->ConsumeFloatingPointInRange<float>(kMinBrightness, kMaxBrightness);
+    brightness.sdrWhitePointNits =
+            fdp->ConsumeFloatingPointInRange<float>(kMinBrightness, kMaxBrightness);
+    brightness.displayBrightness =
+            fdp->ConsumeFloatingPointInRange<float>(kMinBrightness, kMaxBrightness);
+    brightness.displayBrightnessNits =
+            fdp->ConsumeFloatingPointInRange<float>(kMinBrightness, kMaxBrightness);
+    return brightness;
+}
+
+class FakeBnSurfaceComposer : public gui::BnSurfaceComposer {
+public:
+    MOCK_METHOD(binder::Status, bootFinished, (), (override));
+    MOCK_METHOD(binder::Status, createDisplayEventConnection,
+                (gui::ISurfaceComposer::VsyncSource, gui::ISurfaceComposer::EventRegistration,
+                 sp<gui::IDisplayEventConnection>*),
+                (override));
+    MOCK_METHOD(binder::Status, createConnection, (sp<gui::ISurfaceComposerClient>*), (override));
+    MOCK_METHOD(binder::Status, createDisplay, (const std::string&, bool, sp<IBinder>*),
+                (override));
+    MOCK_METHOD(binder::Status, destroyDisplay, (const sp<IBinder>&), (override));
+    MOCK_METHOD(binder::Status, getPhysicalDisplayIds, (std::vector<int64_t>*), (override));
+    MOCK_METHOD(binder::Status, getPrimaryPhysicalDisplayId, (int64_t*), (override));
+    MOCK_METHOD(binder::Status, getPhysicalDisplayToken, (int64_t, sp<IBinder>*), (override));
+    MOCK_METHOD(binder::Status, setPowerMode, (const sp<IBinder>&, int), (override));
+    MOCK_METHOD(binder::Status, getSupportedFrameTimestamps, (std::vector<FrameEvent>*),
+                (override));
+    MOCK_METHOD(binder::Status, getDisplayStats, (const sp<IBinder>&, gui::DisplayStatInfo*),
+                (override));
+    MOCK_METHOD(binder::Status, getDisplayState, (const sp<IBinder>&, gui::DisplayState*),
+                (override));
+    MOCK_METHOD(binder::Status, getStaticDisplayInfo, (const sp<IBinder>&, gui::StaticDisplayInfo*),
+                (override));
+    MOCK_METHOD(binder::Status, getDynamicDisplayInfo,
+                (const sp<IBinder>&, gui::DynamicDisplayInfo*), (override));
+    MOCK_METHOD(binder::Status, getDisplayNativePrimaries,
+                (const sp<IBinder>&, gui::DisplayPrimaries*), (override));
+    MOCK_METHOD(binder::Status, setActiveColorMode, (const sp<IBinder>&, int), (override));
+    MOCK_METHOD(binder::Status, setBootDisplayMode, (const sp<IBinder>&, int), (override));
+    MOCK_METHOD(binder::Status, clearBootDisplayMode, (const sp<IBinder>&), (override));
+    MOCK_METHOD(binder::Status, getBootDisplayModeSupport, (bool*), (override));
+    MOCK_METHOD(binder::Status, setAutoLowLatencyMode, (const sp<IBinder>&, bool), (override));
+    MOCK_METHOD(binder::Status, setGameContentType, (const sp<IBinder>&, bool), (override));
+    MOCK_METHOD(binder::Status, captureDisplay,
+                (const DisplayCaptureArgs&, const sp<IScreenCaptureListener>&), (override));
+    MOCK_METHOD(binder::Status, captureDisplayById, (int64_t, const sp<IScreenCaptureListener>&),
+                (override));
+    MOCK_METHOD(binder::Status, captureLayers,
+                (const LayerCaptureArgs&, const sp<IScreenCaptureListener>&), (override));
+    MOCK_METHOD(binder::Status, clearAnimationFrameStats, (), (override));
+    MOCK_METHOD(binder::Status, getAnimationFrameStats, (gui::FrameStats*), (override));
+    MOCK_METHOD(binder::Status, overrideHdrTypes, (const sp<IBinder>&, const std::vector<int32_t>&),
+                (override));
+    MOCK_METHOD(binder::Status, onPullAtom, (int32_t, gui::PullAtomData*), (override));
+    MOCK_METHOD(binder::Status, enableVSyncInjections, (bool), (override));
+    MOCK_METHOD(binder::Status, injectVSync, (int64_t), (override));
+    MOCK_METHOD(binder::Status, getLayerDebugInfo, (std::vector<gui::LayerDebugInfo>*), (override));
+    MOCK_METHOD(binder::Status, getColorManagement, (bool*), (override));
+    MOCK_METHOD(binder::Status, getCompositionPreference, (gui::CompositionPreference*),
+                (override));
+    MOCK_METHOD(binder::Status, getDisplayedContentSamplingAttributes,
+                (const sp<IBinder>&, gui::ContentSamplingAttributes*), (override));
+    MOCK_METHOD(binder::Status, setDisplayContentSamplingEnabled,
+                (const sp<IBinder>&, bool, int8_t, int64_t), (override));
+    MOCK_METHOD(binder::Status, getDisplayedContentSample,
+                (const sp<IBinder>&, int64_t, int64_t, gui::DisplayedFrameStats*), (override));
+    MOCK_METHOD(binder::Status, getProtectedContentSupport, (bool*), (override));
+    MOCK_METHOD(binder::Status, isWideColorDisplay, (const sp<IBinder>&, bool*), (override));
+    MOCK_METHOD(binder::Status, addRegionSamplingListener,
+                (const gui::ARect&, const sp<IBinder>&, const sp<gui::IRegionSamplingListener>&),
+                (override));
+    MOCK_METHOD(binder::Status, removeRegionSamplingListener,
+                (const sp<gui::IRegionSamplingListener>&), (override));
+    MOCK_METHOD(binder::Status, addFpsListener, (int32_t, const sp<gui::IFpsListener>&),
+                (override));
+    MOCK_METHOD(binder::Status, removeFpsListener, (const sp<gui::IFpsListener>&), (override));
+    MOCK_METHOD(binder::Status, addTunnelModeEnabledListener,
+                (const sp<gui::ITunnelModeEnabledListener>&), (override));
+    MOCK_METHOD(binder::Status, removeTunnelModeEnabledListener,
+                (const sp<gui::ITunnelModeEnabledListener>&), (override));
+    MOCK_METHOD(binder::Status, setDesiredDisplayModeSpecs,
+                (const sp<IBinder>&, int32_t, bool, float, float, float,
+                 float appRequestRefreshRateMax),
+                (override));
+    MOCK_METHOD(binder::Status, getDesiredDisplayModeSpecs,
+                (const sp<IBinder>&, gui::DisplayModeSpecs*), (override));
+    MOCK_METHOD(binder::Status, getDisplayBrightnessSupport, (const sp<IBinder>&, bool*),
+                (override));
+    MOCK_METHOD(binder::Status, setDisplayBrightness,
+                (const sp<IBinder>&, const gui::DisplayBrightness&), (override));
+    MOCK_METHOD(binder::Status, addHdrLayerInfoListener,
+                (const sp<IBinder>&, const sp<gui::IHdrLayerInfoListener>&), (override));
+    MOCK_METHOD(binder::Status, removeHdrLayerInfoListener,
+                (const sp<IBinder>&, const sp<gui::IHdrLayerInfoListener>&), (override));
+    MOCK_METHOD(binder::Status, notifyPowerBoost, (int), (override));
+    MOCK_METHOD(binder::Status, setGlobalShadowSettings,
+                (const gui::Color&, const gui::Color&, float, float, float), (override));
+    MOCK_METHOD(binder::Status, getDisplayDecorationSupport,
+                (const sp<IBinder>&, std::optional<gui::DisplayDecorationSupport>*), (override));
+    MOCK_METHOD(binder::Status, setOverrideFrameRate, (int32_t, float), (override));
+    MOCK_METHOD(binder::Status, addTransactionTraceListener,
+                (const sp<gui::ITransactionTraceListener>&), (override));
+    MOCK_METHOD(binder::Status, getGpuContextPriority, (int32_t*), (override));
+    MOCK_METHOD(binder::Status, getMaxAcquiredBufferCount, (int32_t*), (override));
+    MOCK_METHOD(binder::Status, addWindowInfosListener, (const sp<gui::IWindowInfosListener>&),
+                (override));
+    MOCK_METHOD(binder::Status, removeWindowInfosListener, (const sp<gui::IWindowInfosListener>&),
+                (override));
+};
+
+class FakeBnSurfaceComposerClient : public gui::BnSurfaceComposerClient {
+public:
+    MOCK_METHOD(binder::Status, createSurface,
+                (const std::string& name, int32_t flags, const sp<IBinder>& parent,
+                 const gui::LayerMetadata& metadata, gui::CreateSurfaceResult* outResult),
+                (override));
+
+    MOCK_METHOD(binder::Status, clearLayerFrameStats, (const sp<IBinder>& handle), (override));
+
+    MOCK_METHOD(binder::Status, getLayerFrameStats,
+                (const sp<IBinder>& handle, gui::FrameStats* outStats), (override));
+
+    MOCK_METHOD(binder::Status, mirrorSurface,
+                (const sp<IBinder>& mirrorFromHandle, gui::MirrorSurfaceResult* outResult),
+                (override));
+};
+
+class FakeDisplayEventDispatcher : public DisplayEventDispatcher {
+public:
+    FakeDisplayEventDispatcher(const sp<Looper>& looper,
+                               gui::ISurfaceComposer::VsyncSource vsyncSource,
+                               gui::ISurfaceComposer::EventRegistration eventRegistration)
+          : DisplayEventDispatcher(looper, vsyncSource, eventRegistration){};
+
+    MOCK_METHOD4(dispatchVsync, void(nsecs_t, PhysicalDisplayId, uint32_t, VsyncEventData));
+    MOCK_METHOD3(dispatchHotplug, void(nsecs_t, PhysicalDisplayId, bool));
+    MOCK_METHOD4(dispatchModeChanged, void(nsecs_t, PhysicalDisplayId, int32_t, nsecs_t));
+    MOCK_METHOD2(dispatchNullEvent, void(nsecs_t, PhysicalDisplayId));
+    MOCK_METHOD3(dispatchFrameRateOverrides,
+                 void(nsecs_t, PhysicalDisplayId, std::vector<FrameRateOverride>));
+};
+
+} // namespace android
+
+namespace android::hardware {
+
+namespace graphics::bufferqueue::V1_0::utils {
+
+class FakeGraphicBufferProducerV1 : public HGraphicBufferProducer {
+public:
+    FakeGraphicBufferProducerV1() {
+        ON_CALL(*this, setMaxDequeuedBufferCount).WillByDefault([]() { return 0; });
+        ON_CALL(*this, setAsyncMode).WillByDefault([]() { return 0; });
+        ON_CALL(*this, detachBuffer).WillByDefault([]() { return 0; });
+        ON_CALL(*this, cancelBuffer).WillByDefault([]() { return 0; });
+        ON_CALL(*this, disconnect).WillByDefault([]() { return 0; });
+        ON_CALL(*this, setSidebandStream).WillByDefault([]() { return 0; });
+        ON_CALL(*this, allowAllocation).WillByDefault([]() { return 0; });
+        ON_CALL(*this, setGenerationNumber).WillByDefault([]() { return 0; });
+        ON_CALL(*this, setSharedBufferMode).WillByDefault([]() { return 0; });
+        ON_CALL(*this, setAutoRefresh).WillByDefault([]() { return 0; });
+        ON_CALL(*this, setDequeueTimeout).WillByDefault([]() { return 0; });
+        ON_CALL(*this, setLegacyBufferDrop).WillByDefault([]() { return 0; });
+    };
+    MOCK_METHOD2(requestBuffer, Return<void>(int, requestBuffer_cb));
+    MOCK_METHOD1(setMaxDequeuedBufferCount, Return<int32_t>(int32_t));
+    MOCK_METHOD1(setAsyncMode, Return<int32_t>(bool));
+    MOCK_METHOD6(dequeueBuffer,
+                 Return<void>(uint32_t, uint32_t, graphics::common::V1_0::PixelFormat, uint32_t,
+                              bool, dequeueBuffer_cb));
+    MOCK_METHOD1(detachBuffer, Return<int32_t>(int));
+    MOCK_METHOD1(detachNextBuffer, Return<void>(detachNextBuffer_cb));
+    MOCK_METHOD2(attachBuffer, Return<void>(const media::V1_0::AnwBuffer&, attachBuffer_cb));
+    MOCK_METHOD3(
+            queueBuffer,
+            Return<void>(
+                    int,
+                    const graphics::bufferqueue::V1_0::IGraphicBufferProducer::QueueBufferInput&,
+                    queueBuffer_cb));
+    MOCK_METHOD2(cancelBuffer, Return<int32_t>(int, const hidl_handle&));
+    MOCK_METHOD2(query, Return<void>(int32_t, query_cb));
+    MOCK_METHOD4(connect,
+                 Return<void>(const sp<graphics::bufferqueue::V1_0::IProducerListener>&, int32_t,
+                              bool, connect_cb));
+    MOCK_METHOD2(disconnect,
+                 Return<int32_t>(
+                         int, graphics::bufferqueue::V1_0::IGraphicBufferProducer::DisconnectMode));
+    MOCK_METHOD1(setSidebandStream, Return<int32_t>(const hidl_handle&));
+    MOCK_METHOD4(allocateBuffers,
+                 Return<void>(uint32_t, uint32_t, graphics::common::V1_0::PixelFormat, uint32_t));
+    MOCK_METHOD1(allowAllocation, Return<int32_t>(bool));
+    MOCK_METHOD1(setGenerationNumber, Return<int32_t>(uint32_t));
+    MOCK_METHOD1(getConsumerName, Return<void>(getConsumerName_cb));
+    MOCK_METHOD1(setSharedBufferMode, Return<int32_t>(bool));
+    MOCK_METHOD1(setAutoRefresh, Return<int32_t>(bool));
+    MOCK_METHOD1(setDequeueTimeout, Return<int32_t>(nsecs_t));
+    MOCK_METHOD1(setLegacyBufferDrop, Return<int32_t>(bool));
+    MOCK_METHOD1(getLastQueuedBuffer, Return<void>(getLastQueuedBuffer_cb));
+    MOCK_METHOD1(getFrameTimestamps, Return<void>(getFrameTimestamps_cb));
+    MOCK_METHOD1(getUniqueId, Return<void>(getUniqueId_cb));
+};
+
+}; // namespace graphics::bufferqueue::V1_0::utils
+
+namespace graphics::bufferqueue::V2_0::utils {
+
+class FakeGraphicBufferProducerV2 : public HGraphicBufferProducer {
+public:
+    FakeGraphicBufferProducerV2() {
+        ON_CALL(*this, setMaxDequeuedBufferCount).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, setAsyncMode).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, detachBuffer).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, cancelBuffer).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, disconnect).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, allocateBuffers).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, allowAllocation).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, setGenerationNumber).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, setDequeueTimeout).WillByDefault([]() { return Status::OK; });
+        ON_CALL(*this, getUniqueId).WillByDefault([]() { return 0; });
+    };
+    MOCK_METHOD2(requestBuffer, Return<void>(int, requestBuffer_cb));
+    MOCK_METHOD1(setMaxDequeuedBufferCount, Return<graphics::bufferqueue::V2_0::Status>(int));
+    MOCK_METHOD1(setAsyncMode, Return<graphics::bufferqueue::V2_0::Status>(bool));
+    MOCK_METHOD2(
+            dequeueBuffer,
+            Return<void>(
+                    const graphics::bufferqueue::V2_0::IGraphicBufferProducer::DequeueBufferInput&,
+                    dequeueBuffer_cb));
+    MOCK_METHOD1(detachBuffer, Return<graphics::bufferqueue::V2_0::Status>(int));
+    MOCK_METHOD1(detachNextBuffer, Return<void>(detachNextBuffer_cb));
+    MOCK_METHOD3(attachBuffer,
+                 Return<void>(const graphics::common::V1_2::HardwareBuffer&, uint32_t,
+                              attachBuffer_cb));
+    MOCK_METHOD3(
+            queueBuffer,
+            Return<void>(
+                    int,
+                    const graphics::bufferqueue::V2_0::IGraphicBufferProducer::QueueBufferInput&,
+                    queueBuffer_cb));
+    MOCK_METHOD2(cancelBuffer,
+                 Return<graphics::bufferqueue::V2_0::Status>(int, const hidl_handle&));
+    MOCK_METHOD2(query, Return<void>(int32_t, query_cb));
+    MOCK_METHOD4(connect,
+                 Return<void>(const sp<graphics::bufferqueue::V2_0::IProducerListener>&,
+                              graphics::bufferqueue::V2_0::ConnectionType, bool, connect_cb));
+    MOCK_METHOD1(disconnect,
+                 Return<graphics::bufferqueue::V2_0::Status>(
+                         graphics::bufferqueue::V2_0::ConnectionType));
+    MOCK_METHOD4(allocateBuffers,
+                 Return<graphics::bufferqueue::V2_0::Status>(uint32_t, uint32_t, uint32_t,
+                                                             uint64_t));
+    MOCK_METHOD1(allowAllocation, Return<graphics::bufferqueue::V2_0::Status>(bool));
+    MOCK_METHOD1(setGenerationNumber, Return<graphics::bufferqueue::V2_0::Status>(uint32_t));
+    MOCK_METHOD1(getConsumerName, Return<void>(getConsumerName_cb));
+    MOCK_METHOD1(setDequeueTimeout, Return<graphics::bufferqueue::V2_0::Status>(int64_t));
+    MOCK_METHOD0(getUniqueId, Return<uint64_t>());
+};
+
+}; // namespace graphics::bufferqueue::V2_0::utils
+}; // namespace android::hardware
diff --git a/libs/gui/fuzzer/libgui_surfaceComposer_fuzzer.cpp b/libs/gui/fuzzer/libgui_surfaceComposer_fuzzer.cpp
new file mode 100644
index 0000000..6d5427b
--- /dev/null
+++ b/libs/gui/fuzzer/libgui_surfaceComposer_fuzzer.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fuzzbinder/libbinder_driver.h>
+#include <fuzzer/FuzzedDataProvider.h>
+#include <libgui_fuzzer_utils.h>
+
+using namespace android;
+
+class SurfaceComposerFuzzer {
+public:
+    SurfaceComposerFuzzer(const uint8_t* data, size_t size) : mFdp(data, size){};
+    void process();
+
+private:
+    FuzzedDataProvider mFdp;
+};
+
+void SurfaceComposerFuzzer::process() {
+    sp<FakeBnSurfaceComposer> composer(new FakeBnSurfaceComposer());
+    fuzzService(composer.get(), std::move(mFdp));
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    SurfaceComposerFuzzer surfaceComposerFuzzer(data, size);
+    surfaceComposerFuzzer.process();
+    return 0;
+}
diff --git a/libs/gui/include/gui/BLASTBufferQueue.h b/libs/gui/include/gui/BLASTBufferQueue.h
index 9328a54..2ed5260 100644
--- a/libs/gui/include/gui/BLASTBufferQueue.h
+++ b/libs/gui/include/gui/BLASTBufferQueue.h
@@ -69,9 +69,7 @@
     bool mPreviouslyConnected GUARDED_BY(mMutex);
 };
 
-class BLASTBufferQueue
-    : public ConsumerBase::FrameAvailableListener, public BufferItemConsumer::BufferFreedListener
-{
+class BLASTBufferQueue : public ConsumerBase::FrameAvailableListener {
 public:
     BLASTBufferQueue(const std::string& name, bool updateDestinationFrame = true);
     BLASTBufferQueue(const std::string& name, const sp<SurfaceControl>& surface, int width,
@@ -83,7 +81,6 @@
     sp<Surface> getSurface(bool includeSurfaceControlHandle);
     bool isSameSurfaceControl(const sp<SurfaceControl>& surfaceControl) const;
 
-    void onBufferFreed(const wp<GraphicBuffer>&/* graphicBuffer*/) override { /* TODO */ }
     void onFrameReplaced(const BufferItem& item) override;
     void onFrameAvailable(const BufferItem& item) override;
     void onFrameDequeued(const uint64_t) override;
@@ -251,7 +248,6 @@
     std::queue<sp<SurfaceControl>> mSurfaceControlsWithPendingCallback GUARDED_BY(mMutex);
 
     uint32_t mCurrentMaxAcquiredBufferCount;
-    bool mWaitForTransactionCallback GUARDED_BY(mMutex) = false;
 
     // Flag to determine if syncTransaction should only acquire a single buffer and then clear or
     // continue to acquire buffers until explicitly cleared
@@ -279,6 +275,8 @@
     uint64_t mLastAppliedFrameNumber = 0;
 
     std::function<void(bool)> mTransactionHangCallback;
+
+    std::unordered_set<uint64_t> mSyncedFrameNumbers GUARDED_BY(mMutex);
 };
 
 } // namespace android
diff --git a/libs/gui/include/gui/LayerState.h b/libs/gui/include/gui/LayerState.h
index 37a1595..f3701e8 100644
--- a/libs/gui/include/gui/LayerState.h
+++ b/libs/gui/include/gui/LayerState.h
@@ -21,6 +21,7 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <android/gui/IWindowInfosReportedListener.h>
 #include <android/native_window.h>
 #include <gui/IGraphicBufferProducer.h>
 #include <gui/ITransactionCompletedListener.h>
@@ -165,7 +166,7 @@
         eTransformToDisplayInverseChanged = 0x00080000,
         eCropChanged = 0x00100000,
         eBufferChanged = 0x00200000,
-        /* unused 0x00400000, */
+        eDefaultFrameRateCompatibilityChanged = 0x00400000,
         eDataspaceChanged = 0x00800000,
         eHdrMetadataChanged = 0x01000000,
         eSurfaceDamageRegionChanged = 0x02000000,
@@ -275,6 +276,9 @@
     int8_t frameRateCompatibility;
     int8_t changeFrameRateStrategy;
 
+    // Default frame rate compatibility used to set the layer refresh rate votetype.
+    int8_t defaultFrameRateCompatibility;
+
     // Set by window manager indicating the layer and all its children are
     // in a different orientation than the display. The hint suggests that
     // the graphic producers should receive a transform hint as if the
@@ -359,7 +363,9 @@
 
 struct InputWindowCommands {
     std::vector<gui::FocusRequest> focusRequests;
-    bool syncInputWindows{false};
+    std::unordered_set<sp<gui::IWindowInfosReportedListener>,
+                       SpHash<gui::IWindowInfosReportedListener>>
+            windowInfosReportedListeners;
 
     // Merges the passed in commands and returns true if there were any changes.
     bool merge(const InputWindowCommands& other);
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index 9f036a6..24399ff 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -387,6 +387,22 @@
         std::unordered_set<sp<SurfaceControl>, SCHash> surfaceControls;
     };
 
+    // TODO(b/222421815) this class should be removed when
+    // SurfaceComposerClient::Transaction::syncInputWindows is removed and replaced with a method
+    // for adding callbacks to InputWindowCommands.
+    class Event {
+    private:
+        static constexpr std::chrono::seconds sTimeout{5};
+
+        bool mComplete = false;
+        std::condition_variable mConditionVariable;
+        std::mutex mMutex;
+
+    public:
+        void set();
+        bool wait();
+    };
+
     class Transaction : public Parcelable {
     private:
         void releaseBufferIfOverwriting(const layer_state_t& state);
@@ -436,6 +452,8 @@
         InputWindowCommands mInputWindowCommands;
         int mStatus = NO_ERROR;
 
+        std::shared_ptr<Event> mWindowInfosReportedEvent = nullptr;
+
         layer_state_t* getLayerState(const sp<SurfaceControl>& sc);
         DisplayState& getDisplayState(const sp<IBinder>& token);
 
@@ -583,6 +601,9 @@
         Transaction& setFrameRate(const sp<SurfaceControl>& sc, float frameRate,
                                   int8_t compatibility, int8_t changeFrameRateStrategy);
 
+        Transaction& setDefaultFrameRateCompatibility(const sp<SurfaceControl>& sc,
+                                                      int8_t compatibility);
+
         // Set by window manager indicating the layer and all its children are
         // in a different orientation than the display. The hint suggests that
         // the graphic producers should receive a transform hint as if the
diff --git a/libs/gui/tests/BLASTBufferQueue_test.cpp b/libs/gui/tests/BLASTBufferQueue_test.cpp
index 3a9b2b8..3e563b2 100644
--- a/libs/gui/tests/BLASTBufferQueue_test.cpp
+++ b/libs/gui/tests/BLASTBufferQueue_test.cpp
@@ -162,6 +162,10 @@
         ASSERT_EQ(numFramesSubmitted, mBlastBufferQueueAdapter->mSubmitted.size());
     }
 
+    void mergeWithNextTransaction(Transaction* merge, uint64_t frameNumber) {
+        mBlastBufferQueueAdapter->mergeWithNextTransaction(merge, frameNumber);
+    }
+
 private:
     sp<TestBLASTBufferQueue> mBlastBufferQueueAdapter;
 };
@@ -1113,6 +1117,40 @@
     ASSERT_TRUE(receivedCallback);
 }
 
+TEST_F(BLASTBufferQueueTest, SyncNextTransactionDropBuffer) {
+    uint8_t r = 255;
+    uint8_t g = 0;
+    uint8_t b = 0;
+
+    BLASTBufferQueueHelper adapter(mSurfaceControl, mDisplayWidth, mDisplayHeight);
+
+    sp<IGraphicBufferProducer> igbProducer;
+    setUpProducer(adapter, igbProducer);
+
+    Transaction sync;
+    adapter.setSyncTransaction(sync);
+    queueBuffer(igbProducer, 0, 255, 0, 0);
+
+    // Merge a transaction that has a complete callback into the next frame so we can get notified
+    // when to take a screenshot
+    CallbackHelper transactionCallback;
+    Transaction t;
+    t.addTransactionCompletedCallback(transactionCallback.function,
+                                      transactionCallback.getContext());
+    adapter.mergeWithNextTransaction(&t, 2);
+    queueBuffer(igbProducer, r, g, b, 0);
+
+    // Drop the buffer, but ensure the next one continues to get processed.
+    sync.setBuffer(mSurfaceControl, nullptr);
+
+    CallbackData callbackData;
+    transactionCallback.getCallbackData(&callbackData);
+    ASSERT_EQ(NO_ERROR, captureDisplay(mCaptureArgs, mCaptureResults));
+    ASSERT_NO_FATAL_FAILURE(
+            checkScreenCapture(r, g, b, {0, 0, (int32_t)mDisplayWidth, (int32_t)mDisplayHeight}));
+    sync.apply();
+}
+
 // This test will currently fail because the old surfacecontrol will steal the last presented buffer
 // until the old surface control is destroyed. This is not necessarily a bug but to document a
 // limitation with the update API and to test any changes to make the api more robust. The current
diff --git a/libs/input/Input.cpp b/libs/input/Input.cpp
index 13ca9ec..375b684 100644
--- a/libs/input/Input.cpp
+++ b/libs/input/Input.cpp
@@ -64,9 +64,10 @@
 }
 
 bool shouldDisregardTransformation(uint32_t source) {
-    // Do not apply any transformations to axes from joysticks or touchpads.
+    // Do not apply any transformations to axes from joysticks, touchpads, or relative mice.
     return isFromSource(source, AINPUT_SOURCE_CLASS_JOYSTICK) ||
-            isFromSource(source, AINPUT_SOURCE_CLASS_POSITION);
+            isFromSource(source, AINPUT_SOURCE_CLASS_POSITION) ||
+            isFromSource(source, AINPUT_SOURCE_MOUSE_RELATIVE);
 }
 
 bool shouldDisregardOffset(uint32_t source) {
diff --git a/libs/input/Keyboard.cpp b/libs/input/Keyboard.cpp
index c3f5151..3f8467d 100644
--- a/libs/input/Keyboard.cpp
+++ b/libs/input/Keyboard.cpp
@@ -49,25 +49,23 @@
         const PropertyMap* deviceConfiguration) {
     // Use the configured key layout if available.
     if (deviceConfiguration) {
-        String8 keyLayoutName;
-        if (deviceConfiguration->tryGetProperty(String8("keyboard.layout"),
-                keyLayoutName)) {
+        std::string keyLayoutName;
+        if (deviceConfiguration->tryGetProperty("keyboard.layout", keyLayoutName)) {
             status_t status = loadKeyLayout(deviceIdentifier, keyLayoutName.c_str());
             if (status == NAME_NOT_FOUND) {
                 ALOGE("Configuration for keyboard device '%s' requested keyboard layout '%s' but "
-                        "it was not found.",
-                        deviceIdentifier.name.c_str(), keyLayoutName.string());
+                      "it was not found.",
+                      deviceIdentifier.name.c_str(), keyLayoutName.c_str());
             }
         }
 
-        String8 keyCharacterMapName;
-        if (deviceConfiguration->tryGetProperty(String8("keyboard.characterMap"),
-                keyCharacterMapName)) {
+        std::string keyCharacterMapName;
+        if (deviceConfiguration->tryGetProperty("keyboard.characterMap", keyCharacterMapName)) {
             status_t status = loadKeyCharacterMap(deviceIdentifier, keyCharacterMapName.c_str());
             if (status == NAME_NOT_FOUND) {
                 ALOGE("Configuration for keyboard device '%s' requested keyboard character "
-                        "map '%s' but it was not found.",
-                        deviceIdentifier.name.c_str(), keyCharacterMapName.string());
+                      "map '%s' but it was not found.",
+                      deviceIdentifier.name.c_str(), keyCharacterMapName.c_str());
             }
         }
 
@@ -165,7 +163,7 @@
         return false;
     }
     bool isSpecialFunction = false;
-    config->tryGetProperty(String8("keyboard.specialFunction"), isSpecialFunction);
+    config->tryGetProperty("keyboard.specialFunction", isSpecialFunction);
     return isSpecialFunction;
 }
 
@@ -180,8 +178,7 @@
 
     if (deviceConfiguration) {
         bool builtIn = false;
-        if (deviceConfiguration->tryGetProperty(String8("keyboard.builtIn"), builtIn)
-                && builtIn) {
+        if (deviceConfiguration->tryGetProperty("keyboard.builtIn", builtIn) && builtIn) {
             return true;
         }
     }
diff --git a/libs/input/PropertyMap.cpp b/libs/input/PropertyMap.cpp
index a842166..662e568 100644
--- a/libs/input/PropertyMap.cpp
+++ b/libs/input/PropertyMap.cpp
@@ -17,6 +17,7 @@
 #define LOG_TAG "PropertyMap"
 
 #include <input/PropertyMap.h>
+#include <log/log.h>
 
 // Enables debug output for the parser.
 #define DEBUG_PARSER 0
@@ -39,25 +40,25 @@
     mProperties.clear();
 }
 
-void PropertyMap::addProperty(const String8& key, const String8& value) {
-    mProperties.add(key, value);
+void PropertyMap::addProperty(const std::string& key, const std::string& value) {
+    mProperties.emplace(key, value);
 }
 
-bool PropertyMap::hasProperty(const String8& key) const {
-    return mProperties.indexOfKey(key) >= 0;
+bool PropertyMap::hasProperty(const std::string& key) const {
+    return mProperties.find(key) != mProperties.end();
 }
 
-bool PropertyMap::tryGetProperty(const String8& key, String8& outValue) const {
-    ssize_t index = mProperties.indexOfKey(key);
-    if (index < 0) {
+bool PropertyMap::tryGetProperty(const std::string& key, std::string& outValue) const {
+    auto it = mProperties.find(key);
+    if (it == mProperties.end()) {
         return false;
     }
 
-    outValue = mProperties.valueAt(index);
+    outValue = it->second;
     return true;
 }
 
-bool PropertyMap::tryGetProperty(const String8& key, bool& outValue) const {
+bool PropertyMap::tryGetProperty(const std::string& key, bool& outValue) const {
     int32_t intValue;
     if (!tryGetProperty(key, intValue)) {
         return false;
@@ -67,34 +68,34 @@
     return true;
 }
 
-bool PropertyMap::tryGetProperty(const String8& key, int32_t& outValue) const {
-    String8 stringValue;
+bool PropertyMap::tryGetProperty(const std::string& key, int32_t& outValue) const {
+    std::string stringValue;
     if (!tryGetProperty(key, stringValue) || stringValue.length() == 0) {
         return false;
     }
 
     char* end;
-    int value = strtol(stringValue.string(), &end, 10);
+    int value = strtol(stringValue.c_str(), &end, 10);
     if (*end != '\0') {
-        ALOGW("Property key '%s' has invalid value '%s'.  Expected an integer.", key.string(),
-              stringValue.string());
+        ALOGW("Property key '%s' has invalid value '%s'.  Expected an integer.", key.c_str(),
+              stringValue.c_str());
         return false;
     }
     outValue = value;
     return true;
 }
 
-bool PropertyMap::tryGetProperty(const String8& key, float& outValue) const {
-    String8 stringValue;
+bool PropertyMap::tryGetProperty(const std::string& key, float& outValue) const {
+    std::string stringValue;
     if (!tryGetProperty(key, stringValue) || stringValue.length() == 0) {
         return false;
     }
 
     char* end;
-    float value = strtof(stringValue.string(), &end);
+    float value = strtof(stringValue.c_str(), &end);
     if (*end != '\0') {
-        ALOGW("Property key '%s' has invalid value '%s'.  Expected a float.", key.string(),
-              stringValue.string());
+        ALOGW("Property key '%s' has invalid value '%s'.  Expected a float.", key.c_str(),
+              stringValue.c_str());
         return false;
     }
     outValue = value;
@@ -102,8 +103,8 @@
 }
 
 void PropertyMap::addAll(const PropertyMap* map) {
-    for (size_t i = 0; i < map->mProperties.size(); i++) {
-        mProperties.add(map->mProperties.keyAt(i), map->mProperties.valueAt(i));
+    for (const auto& [key, value] : map->mProperties) {
+        mProperties.emplace(key, value);
     }
 }
 
@@ -184,13 +185,13 @@
                 return BAD_VALUE;
             }
 
-            if (mMap->hasProperty(keyToken)) {
+            if (mMap->hasProperty(keyToken.string())) {
                 ALOGE("%s: Duplicate property value for key '%s'.",
                       mTokenizer->getLocation().string(), keyToken.string());
                 return BAD_VALUE;
             }
 
-            mMap->addProperty(keyToken, valueToken);
+            mMap->addProperty(keyToken.string(), valueToken.string());
         }
 
         mTokenizer->nextLine();
diff --git a/libs/input/PropertyMap_fuzz.cpp b/libs/input/PropertyMap_fuzz.cpp
index afb97a1..d985dc1 100755
--- a/libs/input/PropertyMap_fuzz.cpp
+++ b/libs/input/PropertyMap_fuzz.cpp
@@ -17,32 +17,22 @@
 #include "android-base/file.h"
 #include "fuzzer/FuzzedDataProvider.h"
 #include "input/PropertyMap.h"
-#include "utils/String8.h"
 
 static constexpr int MAX_FILE_SIZE = 256;
 static constexpr int MAX_STR_LEN = 2048;
 static constexpr int MAX_OPERATIONS = 1000;
 
-static const std::vector<std::function<void(FuzzedDataProvider*, android::PropertyMap)>>
+static const std::vector<std::function<void(FuzzedDataProvider*, android::PropertyMap&)>>
         operations = {
-                [](FuzzedDataProvider*, android::PropertyMap propertyMap) -> void {
-                    propertyMap.getProperties();
-                },
-                [](FuzzedDataProvider*, android::PropertyMap propertyMap) -> void {
+                [](FuzzedDataProvider*, android::PropertyMap& propertyMap) -> void {
                     propertyMap.clear();
                 },
-                [](FuzzedDataProvider* dataProvider, android::PropertyMap propertyMap) -> void {
-                    std::string keyStr = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
-                    android::String8 key = android::String8(keyStr.c_str());
-                    propertyMap.hasProperty(key);
-                },
-                [](FuzzedDataProvider* dataProvider, android::PropertyMap propertyMap) -> void {
-                    std::string keyStr = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
-                    android::String8 key = android::String8(keyStr.c_str());
-                    android::String8 out;
+                [](FuzzedDataProvider* dataProvider, android::PropertyMap& propertyMap) -> void {
+                    std::string key = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
+                    std::string out;
                     propertyMap.tryGetProperty(key, out);
                 },
-                [](FuzzedDataProvider* dataProvider, android::PropertyMap /*unused*/) -> void {
+                [](FuzzedDataProvider* dataProvider, android::PropertyMap& /*unused*/) -> void {
                     TemporaryFile tf;
                     // Generate file contents
                     std::string contents = dataProvider->ConsumeRandomLengthString(MAX_FILE_SIZE);
@@ -54,17 +44,15 @@
                     }
                     android::PropertyMap::load(tf.path);
                 },
-                [](FuzzedDataProvider* dataProvider, android::PropertyMap propertyMap) -> void {
-                    std::string keyStr = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
-                    std::string valStr = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
-                    android::String8 key = android::String8(keyStr.c_str());
-                    android::String8 val = android::String8(valStr.c_str());
+                [](FuzzedDataProvider* dataProvider, android::PropertyMap& propertyMap) -> void {
+                    std::string key = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
+                    std::string val = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
                     propertyMap.addProperty(key, val);
                 },
 };
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
     FuzzedDataProvider dataProvider(data, size);
-    android::PropertyMap propertyMap = android::PropertyMap();
+    android::PropertyMap propertyMap;
 
     int opsRun = 0;
     while (dataProvider.remaining_bytes() > 0 && opsRun++ < MAX_OPERATIONS) {
diff --git a/libs/input/VelocityTracker.cpp b/libs/input/VelocityTracker.cpp
index 7f427f2..76aaf61 100644
--- a/libs/input/VelocityTracker.cpp
+++ b/libs/input/VelocityTracker.cpp
@@ -27,6 +27,8 @@
 #include <utils/BitSet.h>
 #include <utils/Timers.h>
 
+using std::literals::chrono_literals::operator""ms;
+
 namespace android {
 
 /**
@@ -57,8 +59,14 @@
 // Some input devices do not send ACTION_MOVE events in the case where a pointer has
 // stopped.  We need to detect this case so that we can accurately predict the
 // velocity after the pointer starts moving again.
-static const nsecs_t ASSUME_POINTER_STOPPED_TIME = 40 * NANOS_PER_MS;
+static const std::chrono::duration ASSUME_POINTER_STOPPED_TIME = 40ms;
 
+static std::string toString(std::chrono::nanoseconds t) {
+    std::stringstream stream;
+    stream.precision(1);
+    stream << std::fixed << std::chrono::duration<float, std::milli>(t).count() << " ms";
+    return stream.str();
+}
 
 static float vectorDot(const float* a, const float* b, uint32_t m) {
     float r = 0;
@@ -146,18 +154,14 @@
         VelocityTracker::Strategy strategy) {
     switch (strategy) {
         case VelocityTracker::Strategy::IMPULSE:
-            if (DEBUG_STRATEGY) {
-                ALOGI("Initializing impulse strategy");
-            }
+            ALOGI_IF(DEBUG_STRATEGY, "Initializing impulse strategy");
             return std::make_unique<ImpulseVelocityTrackerStrategy>();
 
         case VelocityTracker::Strategy::LSQ1:
             return std::make_unique<LeastSquaresVelocityTrackerStrategy>(1);
 
         case VelocityTracker::Strategy::LSQ2:
-            if (DEBUG_STRATEGY && !DEBUG_IMPULSE) {
-                ALOGI("Initializing lsq2 strategy");
-            }
+            ALOGI_IF(DEBUG_STRATEGY && !DEBUG_IMPULSE, "Initializing lsq2 strategy");
             return std::make_unique<LeastSquaresVelocityTrackerStrategy>(2);
 
         case VelocityTracker::Strategy::LSQ3:
@@ -221,12 +225,11 @@
         idBits.clearLastMarkedBit();
     }
 
-    if ((mCurrentPointerIdBits.value & idBits.value)
-            && eventTime >= mLastEventTime + ASSUME_POINTER_STOPPED_TIME) {
-        if (DEBUG_VELOCITY) {
-            ALOGD("VelocityTracker: stopped for %0.3f ms, clearing state.",
-                  (eventTime - mLastEventTime) * 0.000001f);
-        }
+    if ((mCurrentPointerIdBits.value & idBits.value) &&
+        std::chrono::nanoseconds(eventTime - mLastEventTime) > ASSUME_POINTER_STOPPED_TIME) {
+        ALOGD_IF(DEBUG_VELOCITY, "VelocityTracker: stopped for %s, clearing state.",
+                 toString(std::chrono::nanoseconds(eventTime - mLastEventTime)).c_str());
+
         // We have not received any movements for too long.  Assume that all pointers
         // have stopped.
         mStrategy->clear();
@@ -281,8 +284,18 @@
     case AMOTION_EVENT_ACTION_MOVE:
     case AMOTION_EVENT_ACTION_HOVER_MOVE:
         break;
-    default:
-        // Ignore all other actions because they do not convey any new information about
+    case AMOTION_EVENT_ACTION_POINTER_UP:
+    case AMOTION_EVENT_ACTION_UP: {
+        std::chrono::nanoseconds delaySinceLastEvent(event->getEventTime() - mLastEventTime);
+        if (delaySinceLastEvent > ASSUME_POINTER_STOPPED_TIME) {
+            ALOGD_IF(DEBUG_VELOCITY,
+                     "VelocityTracker: stopped for %s, clearing state upon pointer liftoff.",
+                     toString(delaySinceLastEvent).c_str());
+            // We have not received any movements for too long.  Assume that all pointers
+            // have stopped.
+            mStrategy->clear();
+        }
+        // These actions because they do not convey any new information about
         // pointer movement.  We also want to preserve the last known velocity of the pointers.
         // Note that ACTION_UP and ACTION_POINTER_UP always report the last known position
         // of the pointers that went up.  ACTION_POINTER_UP does include the new position of
@@ -292,6 +305,10 @@
         // before adding the movement.
         return;
     }
+    default:
+        // Ignore all other actions.
+        return;
+    }
 
     size_t pointerCount = event->getPointerCount();
     if (pointerCount > MAX_POINTERS) {
@@ -438,10 +455,10 @@
 static bool solveLeastSquares(const std::vector<float>& x, const std::vector<float>& y,
                               const std::vector<float>& w, uint32_t n, float* outB, float* outDet) {
     const size_t m = x.size();
-    if (DEBUG_STRATEGY) {
-        ALOGD("solveLeastSquares: m=%d, n=%d, x=%s, y=%s, w=%s", int(m), int(n),
-              vectorToString(x).c_str(), vectorToString(y).c_str(), vectorToString(w).c_str());
-    }
+
+    ALOGD_IF(DEBUG_STRATEGY, "solveLeastSquares: m=%d, n=%d, x=%s, y=%s, w=%s", int(m), int(n),
+             vectorToString(x).c_str(), vectorToString(y).c_str(), vectorToString(w).c_str());
+
     LOG_ALWAYS_FATAL_IF(m != y.size() || m != w.size(), "Mismatched vector sizes");
 
     // Expand the X vector to a matrix A, pre-multiplied by the weights.
@@ -452,9 +469,9 @@
             a[i][h] = a[i - 1][h] * x[h];
         }
     }
-    if (DEBUG_STRATEGY) {
-        ALOGD("  - a=%s", matrixToString(&a[0][0], m, n, false /*rowMajor*/).c_str());
-    }
+
+    ALOGD_IF(DEBUG_STRATEGY, "  - a=%s",
+             matrixToString(&a[0][0], m, n, false /*rowMajor*/).c_str());
 
     // Apply the Gram-Schmidt process to A to obtain its QR decomposition.
     float q[n][m]; // orthonormal basis, column-major order
@@ -473,9 +490,7 @@
         float norm = vectorNorm(&q[j][0], m);
         if (norm < 0.000001f) {
             // vectors are linearly dependent or zero so no solution
-            if (DEBUG_STRATEGY) {
-                ALOGD("  - no solution, norm=%f", norm);
-            }
+            ALOGD_IF(DEBUG_STRATEGY, "  - no solution, norm=%f", norm);
             return false;
         }
 
@@ -518,9 +533,8 @@
         }
         outB[i] /= r[i][i];
     }
-    if (DEBUG_STRATEGY) {
-        ALOGD("  - b=%s", vectorToString(outB, n).c_str());
-    }
+
+    ALOGD_IF(DEBUG_STRATEGY, "  - b=%s", vectorToString(outB, n).c_str());
 
     // Calculate the coefficient of determination as 1 - (SSerr / SStot) where
     // SSerr is the residual sum of squares (variance of the error),
@@ -546,11 +560,11 @@
         sstot += w[h] * w[h] * var * var;
     }
     *outDet = sstot > 0.000001f ? 1.0f - (sserr / sstot) : 1;
-    if (DEBUG_STRATEGY) {
-        ALOGD("  - sserr=%f", sserr);
-        ALOGD("  - sstot=%f", sstot);
-        ALOGD("  - det=%f", *outDet);
-    }
+
+    ALOGD_IF(DEBUG_STRATEGY, "  - sserr=%f", sserr);
+    ALOGD_IF(DEBUG_STRATEGY, "  - sstot=%f", sstot);
+    ALOGD_IF(DEBUG_STRATEGY, "  - det=%f", *outDet);
+
     return true;
 }
 
@@ -673,11 +687,11 @@
             outEstimator->time = newestMovement.eventTime;
             outEstimator->degree = degree;
             outEstimator->confidence = xdet * ydet;
-            if (DEBUG_STRATEGY) {
-                ALOGD("estimate: degree=%d, xCoeff=%s, yCoeff=%s, confidence=%f",
-                      int(outEstimator->degree), vectorToString(outEstimator->xCoeff, n).c_str(),
-                      vectorToString(outEstimator->yCoeff, n).c_str(), outEstimator->confidence);
-            }
+
+            ALOGD_IF(DEBUG_STRATEGY, "estimate: degree=%d, xCoeff=%s, yCoeff=%s, confidence=%f",
+                     int(outEstimator->degree), vectorToString(outEstimator->xCoeff, n).c_str(),
+                     vectorToString(outEstimator->yCoeff, n).c_str(), outEstimator->confidence);
+
             return true;
         }
     }
@@ -1185,9 +1199,10 @@
     outEstimator->time = newestMovement.eventTime;
     outEstimator->degree = 2; // similar results to 2nd degree fit
     outEstimator->confidence = 1;
-    if (DEBUG_STRATEGY) {
-        ALOGD("velocity: (%.1f, %.1f)", outEstimator->xCoeff[1], outEstimator->yCoeff[1]);
-    }
+
+    ALOGD_IF(DEBUG_STRATEGY, "velocity: (%.1f, %.1f)", outEstimator->xCoeff[1],
+             outEstimator->yCoeff[1]);
+
     if (DEBUG_IMPULSE) {
         // TODO(b/134179997): delete this block once the switch to 'impulse' is complete.
         // Calculate the lsq2 velocity for the same inputs to allow runtime comparisons
diff --git a/libs/input/tests/InputEvent_test.cpp b/libs/input/tests/InputEvent_test.cpp
index a92016b..4b31246 100644
--- a/libs/input/tests/InputEvent_test.cpp
+++ b/libs/input/tests/InputEvent_test.cpp
@@ -715,10 +715,10 @@
 }
 
 TEST_F(MotionEventTest, JoystickAndTouchpadAreNotTransformed) {
-    constexpr static std::array kNonTransformedSources = {std::pair(AINPUT_SOURCE_TOUCHPAD,
-                                                                    AMOTION_EVENT_ACTION_DOWN),
-                                                          std::pair(AINPUT_SOURCE_JOYSTICK,
-                                                                    AMOTION_EVENT_ACTION_MOVE)};
+    constexpr static std::array kNonTransformedSources =
+            {std::pair(AINPUT_SOURCE_TOUCHPAD, AMOTION_EVENT_ACTION_DOWN),
+             std::pair(AINPUT_SOURCE_JOYSTICK, AMOTION_EVENT_ACTION_MOVE),
+             std::pair(AINPUT_SOURCE_MOUSE_RELATIVE, AMOTION_EVENT_ACTION_MOVE)};
     // Create a rotate-90 transform with an offset (like a window which isn't fullscreen).
     ui::Transform transform(ui::Transform::ROT_90, 800, 400);
     transform.set(transform.tx() + 20, transform.ty() + 40);
@@ -738,7 +738,7 @@
 TEST_F(MotionEventTest, NonPointerSourcesAreNotTranslated) {
     constexpr static std::array kNonPointerSources = {std::pair(AINPUT_SOURCE_TRACKBALL,
                                                                 AMOTION_EVENT_ACTION_DOWN),
-                                                      std::pair(AINPUT_SOURCE_MOUSE_RELATIVE,
+                                                      std::pair(AINPUT_SOURCE_TOUCH_NAVIGATION,
                                                                 AMOTION_EVENT_ACTION_MOVE)};
     // Create a rotate-90 transform with an offset (like a window which isn't fullscreen).
     ui::Transform transform(ui::Transform::ROT_90, 800, 400);
diff --git a/libs/input/tests/VelocityTracker_test.cpp b/libs/input/tests/VelocityTracker_test.cpp
index a87b187..4a445de 100644
--- a/libs/input/tests/VelocityTracker_test.cpp
+++ b/libs/input/tests/VelocityTracker_test.cpp
@@ -26,7 +26,9 @@
 #include <gui/constants.h>
 #include <input/VelocityTracker.h>
 
-using namespace std::chrono_literals;
+using std::literals::chrono_literals::operator""ms;
+using std::literals::chrono_literals::operator""ns;
+using std::literals::chrono_literals::operator""us;
 using android::base::StringPrintf;
 
 namespace android {
@@ -149,8 +151,7 @@
         if (i == 0) {
             action = AMOTION_EVENT_ACTION_DOWN;
             EXPECT_EQ(1U, pointerCount) << "First event should only have 1 pointer";
-        } else if (i == motions.size() - 1) {
-            EXPECT_EQ(1U, pointerCount) << "Last event should only have 1 pointer";
+        } else if ((i == motions.size() - 1) && pointerCount == 1) {
             action = AMOTION_EVENT_ACTION_UP;
         } else {
             const MotionEventEntry& previousEntry = motions[i-1];
@@ -195,7 +196,7 @@
 
 static void computeAndCheckVelocity(const VelocityTracker::Strategy strategy,
                                     const std::vector<MotionEventEntry>& motions, int32_t axis,
-                                    float targetVelocity) {
+                                    float targetVelocity, uint32_t pointerId = DEFAULT_POINTER_ID) {
     VelocityTracker vt(strategy);
     float Vx, Vy;
 
@@ -204,7 +205,7 @@
         vt.addMovement(&event);
     }
 
-    vt.getVelocity(DEFAULT_POINTER_ID, &Vx, &Vy);
+    vt.getVelocity(pointerId, &Vx, &Vy);
 
     switch (axis) {
     case AMOTION_EVENT_AXIS_X:
@@ -846,13 +847,71 @@
 
     // Velocity should actually be zero, but we expect 0.016 here instead.
     // This is close enough to zero, and is likely caused by division by a very small number.
-    computeAndCheckVelocity(VelocityTracker::Strategy::LSQ2, motions, AMOTION_EVENT_AXIS_X, -0.016);
-    computeAndCheckVelocity(VelocityTracker::Strategy::LSQ2, motions, AMOTION_EVENT_AXIS_Y, -0.016);
+    computeAndCheckVelocity(VelocityTracker::Strategy::LSQ2, motions, AMOTION_EVENT_AXIS_X, 0);
+    computeAndCheckVelocity(VelocityTracker::Strategy::LSQ2, motions, AMOTION_EVENT_AXIS_Y, 0);
     computeAndCheckVelocity(VelocityTracker::Strategy::IMPULSE, motions, AMOTION_EVENT_AXIS_X, 0);
     computeAndCheckVelocity(VelocityTracker::Strategy::IMPULSE, motions, AMOTION_EVENT_AXIS_Y, 0);
 }
 
 /**
+ * ================= Pointer liftoff ===============================================================
+ */
+
+/**
+ * The last movement of a pointer is always ACTION_POINTER_UP or ACTION_UP. If there's a short delay
+ * between the last ACTION_MOVE and the next ACTION_POINTER_UP or ACTION_UP, velocity should not be
+ * affected by the liftoff.
+ */
+TEST_F(VelocityTrackerTest, ShortDelayBeforeActionUp) {
+    std::vector<MotionEventEntry> motions = {
+            {0ms, {{10, 0}}}, {10ms, {{20, 0}}}, {20ms, {{30, 0}}}, {30ms, {{30, 0}}}, // ACTION_UP
+    };
+    computeAndCheckVelocity(VelocityTracker::Strategy::IMPULSE, motions, AMOTION_EVENT_AXIS_X,
+                            1000);
+    computeAndCheckVelocity(VelocityTracker::Strategy::LSQ2, motions, AMOTION_EVENT_AXIS_X, 1000);
+}
+
+/**
+ * The last movement of a single pointer is ACTION_UP. If there's a long delay between the last
+ * ACTION_MOVE and the final ACTION_UP, velocity should be reported as zero because the pointer
+ * should be assumed to have stopped.
+ */
+TEST_F(VelocityTrackerTest, LongDelayBeforeActionUp) {
+    std::vector<MotionEventEntry> motions = {
+            {0ms, {{10, 0}}},
+            {10ms, {{20, 0}}},
+            {20ms, {{30, 0}}},
+            {3000ms, {{30, 0}}}, // ACTION_UP
+    };
+    computeAndCheckVelocity(VelocityTracker::Strategy::IMPULSE, motions, AMOTION_EVENT_AXIS_X, 0);
+    computeAndCheckVelocity(VelocityTracker::Strategy::LSQ2, motions, AMOTION_EVENT_AXIS_X, 0);
+}
+
+/**
+ * The last movement of a pointer is always ACTION_POINTER_UP or ACTION_UP. If there's a long delay
+ * before ACTION_POINTER_UP event, the movement should be assumed to have stopped.
+ * The final velocity should be reported as zero for all pointers.
+ */
+TEST_F(VelocityTrackerTest, LongDelayBeforeActionPointerUp) {
+    std::vector<MotionEventEntry> motions = {
+            {0ms, {{10, 0}}},
+            {10ms, {{20, 0}, {100, 0}}},
+            {20ms, {{30, 0}, {200, 0}}},
+            {30ms, {{30, 0}, {300, 0}}},
+            {40ms, {{30, 0}, {400, 0}}},
+            {3000ms, {{30, 0}}}, // ACTION_POINTER_UP
+    };
+    computeAndCheckVelocity(VelocityTracker::Strategy::IMPULSE, motions, AMOTION_EVENT_AXIS_X, 0,
+                            /*pointerId*/ 0);
+    computeAndCheckVelocity(VelocityTracker::Strategy::LSQ2, motions, AMOTION_EVENT_AXIS_X, 0,
+                            /*pointerId*/ 0);
+    computeAndCheckVelocity(VelocityTracker::Strategy::IMPULSE, motions, AMOTION_EVENT_AXIS_X, 0,
+                            /*pointerId*/ 1);
+    computeAndCheckVelocity(VelocityTracker::Strategy::LSQ2, motions, AMOTION_EVENT_AXIS_X, 0,
+                            /*pointerId*/ 1);
+}
+
+/**
  * ================== Tests for least squares fitting ==============================================
  *
  * Special care must be taken when constructing tests for LeastSquaresVelocityTrackerStrategy
diff --git a/libs/nativewindow/ANativeWindow.cpp b/libs/nativewindow/ANativeWindow.cpp
index ec11b81..731f989 100644
--- a/libs/nativewindow/ANativeWindow.cpp
+++ b/libs/nativewindow/ANativeWindow.cpp
@@ -193,6 +193,13 @@
     return query(window, NATIVE_WINDOW_DATASPACE);
 }
 
+int32_t ANativeWindow_getBuffersDefaultDataSpace(ANativeWindow* window) {
+    if (!window || !query(window, NATIVE_WINDOW_IS_VALID)) {
+        return -EINVAL;
+    }
+    return query(window, NATIVE_WINDOW_DEFAULT_DATASPACE);
+}
+
 int32_t ANativeWindow_setFrameRate(ANativeWindow* window, float frameRate, int8_t compatibility) {
     return ANativeWindow_setFrameRateWithChangeStrategy(window, frameRate, compatibility,
         ANATIVEWINDOW_CHANGE_FRAME_RATE_ONLY_IF_SEAMLESS);
diff --git a/libs/nativewindow/include/android/native_window.h b/libs/nativewindow/include/android/native_window.h
index f0e1c4d..20f4b52 100644
--- a/libs/nativewindow/include/android/native_window.h
+++ b/libs/nativewindow/include/android/native_window.h
@@ -227,6 +227,16 @@
  */
 int32_t ANativeWindow_getBuffersDataSpace(ANativeWindow* window) __INTRODUCED_IN(28);
 
+/**
+ * Get the default dataspace of the buffers in window as set by the consumer.
+ *
+ * Available since API level 34.
+ *
+ * \return the dataspace of buffers in window, ADATASPACE_UNKNOWN is returned if
+ * dataspace is unknown, or -EINVAL if window is invalid.
+ */
+int32_t ANativeWindow_getBuffersDefaultDataSpace(ANativeWindow* window) __INTRODUCED_IN(34);
+
 /** Compatibility value for ANativeWindow_setFrameRate. */
 enum ANativeWindow_FrameRateCompatibility {
     /**
diff --git a/libs/nativewindow/include/system/window.h b/libs/nativewindow/include/system/window.h
index a54af1f..79f49e1 100644
--- a/libs/nativewindow/include/system/window.h
+++ b/libs/nativewindow/include/system/window.h
@@ -1034,6 +1034,11 @@
      * This surface is ignored while choosing the refresh rate.
      */
     ANATIVEWINDOW_FRAME_RATE_NO_VOTE,
+
+    /**
+     * This surface will vote for the minimum refresh rate.
+     */
+    ANATIVEWINDOW_FRAME_RATE_MIN
 };
 
 static inline int native_window_set_frame_rate(struct ANativeWindow* window, float frameRate,
diff --git a/libs/nativewindow/libnativewindow.map.txt b/libs/nativewindow/libnativewindow.map.txt
index 988132c..f8c9e4a 100644
--- a/libs/nativewindow/libnativewindow.map.txt
+++ b/libs/nativewindow/libnativewindow.map.txt
@@ -21,6 +21,7 @@
     ANativeWindow_cancelBuffer; # llndk
     ANativeWindow_dequeueBuffer; # llndk
     ANativeWindow_getBuffersDataSpace; # introduced=28
+    ANativeWindow_getBuffersDefaultDataSpace; # introduced=34
     ANativeWindow_getFormat;
     ANativeWindow_getHeight;
     ANativeWindow_getLastDequeueDuration; # apex # introduced=30
diff --git a/libs/renderengine/gl/GLESRenderEngine.cpp b/libs/renderengine/gl/GLESRenderEngine.cpp
index 22dd866..6dc01b9 100644
--- a/libs/renderengine/gl/GLESRenderEngine.cpp
+++ b/libs/renderengine/gl/GLESRenderEngine.cpp
@@ -921,7 +921,8 @@
 
     // Finally, we cut the layer into 3 parts, with top and bottom parts having rounded corners
     // and the middle part without rounded corners.
-    const int32_t radius = ceil(layer.geometry.roundedCornersRadius);
+    const int32_t radius = ceil(
+            (layer.geometry.roundedCornersRadius.x + layer.geometry.roundedCornersRadius.y) / 2.0);
     const Rect topRect(bounds.left, bounds.top, bounds.right, bounds.top + radius);
     setScissor(topRect);
     drawMesh(mesh);
@@ -1266,23 +1267,24 @@
 
         const half3 solidColor = layer.source.solidColor;
         const half4 color = half4(solidColor.r, solidColor.g, solidColor.b, layer.alpha);
+        const float radius =
+                (layer.geometry.roundedCornersRadius.x + layer.geometry.roundedCornersRadius.y) /
+                2.0f;
         // Buffer sources will have a black solid color ignored in the shader,
         // so in that scenario the solid color passed here is arbitrary.
-        setupLayerBlending(usePremultipliedAlpha, isOpaque, disableTexture, color,
-                           layer.geometry.roundedCornersRadius);
+        setupLayerBlending(usePremultipliedAlpha, isOpaque, disableTexture, color, radius);
         if (layer.disableBlending) {
             glDisable(GL_BLEND);
         }
         setSourceDataSpace(layer.sourceDataspace);
 
         if (layer.shadow.length > 0.0f) {
-            handleShadow(layer.geometry.boundaries, layer.geometry.roundedCornersRadius,
-                         layer.shadow);
+            handleShadow(layer.geometry.boundaries, radius, layer.shadow);
         }
         // We only want to do a special handling for rounded corners when having rounded corners
         // is the only reason it needs to turn on blending, otherwise, we handle it like the
         // usual way since it needs to turn on blending anyway.
-        else if (layer.geometry.roundedCornersRadius > 0.0 && color.a >= 1.0f && isOpaque) {
+        else if (radius > 0.0 && color.a >= 1.0f && isOpaque) {
             handleRoundedCorners(display, layer, mesh);
         } else {
             drawMesh(mesh);
diff --git a/libs/renderengine/include/renderengine/LayerSettings.h b/libs/renderengine/include/renderengine/LayerSettings.h
index 154e526..b3a617c 100644
--- a/libs/renderengine/include/renderengine/LayerSettings.h
+++ b/libs/renderengine/include/renderengine/LayerSettings.h
@@ -87,7 +87,7 @@
     // rectangle to figure out how to apply the radius for this layer. The crop rectangle will be
     // in local layer coordinate space, so we have to take the layer transform into account when
     // walking up the tree.
-    float roundedCornersRadius = 0.0;
+    vec2 roundedCornersRadius = vec2(0.0f, 0.0f);
 
     // Rectangle within which corners will be rounded.
     FloatRect roundedCornersCrop = FloatRect();
@@ -258,7 +258,8 @@
     PrintTo(settings.boundaries, os);
     *os << "\n    .positionTransform = ";
     PrintMatrix(settings.positionTransform, os);
-    *os << "\n    .roundedCornersRadius = " << settings.roundedCornersRadius;
+    *os << "\n    .roundedCornersRadiusX = " << settings.roundedCornersRadius.x;
+    *os << "\n    .roundedCornersRadiusY = " << settings.roundedCornersRadius.y;
     *os << "\n    .roundedCornersCrop = ";
     PrintTo(settings.roundedCornersCrop, os);
     *os << "\n}";
diff --git a/libs/renderengine/skia/Cache.cpp b/libs/renderengine/skia/Cache.cpp
index f3064f3..c39f0a9 100644
--- a/libs/renderengine/skia/Cache.cpp
+++ b/libs/renderengine/skia/Cache.cpp
@@ -66,7 +66,7 @@
                     Geometry{
                             .boundaries = rect,
                             .roundedCornersCrop = rect,
-                            .roundedCornersRadius = 50.f,
+                            .roundedCornersRadius = {50.f, 50.f},
                     },
             // drawShadow ignores alpha
             .shadow =
@@ -87,7 +87,7 @@
                     Geometry{
                             .boundaries = smallerRect,
                             .roundedCornersCrop = rect,
-                            .roundedCornersRadius = 50.f,
+                            .roundedCornersRadius = {50.f, 50.f},
                     },
             .source =
                     PixelSource{
@@ -148,7 +148,7 @@
         // In reduced shader mode, all non-zero round rect radii get the same code path.
         for (float roundedCornersRadius : {0.0f, 50.0f}) {
             // roundedCornersCrop is always set, but the radius triggers the behavior
-            layer.geometry.roundedCornersRadius = roundedCornersRadius;
+            layer.geometry.roundedCornersRadius = {roundedCornersRadius, roundedCornersRadius};
             for (bool isOpaque : {true, false}) {
                 layer.source.buffer.isOpaque = isOpaque;
                 for (auto alpha : {half(.2f), half(1.0f)}) {
@@ -181,7 +181,7 @@
     for (auto transform : {mat4(), kScaleAndTranslate}) {
         layer.geometry.positionTransform = transform;
         for (float roundedCornersRadius : {0.0f, 50.f}) {
-            layer.geometry.roundedCornersRadius = roundedCornersRadius;
+            layer.geometry.roundedCornersRadius = {roundedCornersRadius, roundedCornersRadius};
             auto layers = std::vector<LayerSettings>{layer};
             renderengine->drawLayers(display, layers, dstTexture, kUseFrameBufferCache,
                                      base::unique_fd());
@@ -238,7 +238,7 @@
             .geometry =
                     Geometry{
                             .boundaries = rect,
-                            .roundedCornersRadius = 27, // larger than the 20 above.
+                            .roundedCornersRadius = {27.f, 27.f},
                             .roundedCornersCrop =
                                     FloatRect(0, 0, displayRect.width(), displayRect.height()),
                     },
@@ -275,9 +275,9 @@
                             // larger than the layer bounds.
                             .positionTransform = kFlip,
                             .boundaries = rect,
-                            .roundedCornersRadius = 94.2551,
-                            .roundedCornersCrop = FloatRect(
-                                -93.75, 0, displayRect.width() + 93.75, displayRect.height()),
+                            .roundedCornersRadius = {94.2551f, 94.2551f},
+                            .roundedCornersCrop = FloatRect(-93.75, 0, displayRect.width() + 93.75,
+                                                            displayRect.height()),
                     },
             .source = PixelSource{.buffer =
                                           Buffer{
@@ -307,10 +307,11 @@
                             // the boundaries have to be smaller than the rounded crop so that
                             // clipRRect is used instead of drawRRect
                             .boundaries = small,
-                            .roundedCornersRadius = 50.f,
+                            .roundedCornersRadius = {50.f, 50.f},
                             .roundedCornersCrop = rect,
                     },
-            .source = PixelSource{
+            .source =
+                    PixelSource{
                             .solidColor = half3(0.f, 0.f, 0.f),
                     },
             .sourceDataspace = kDestDataSpace,
diff --git a/libs/renderengine/skia/SkiaGLRenderEngine.cpp b/libs/renderengine/skia/SkiaGLRenderEngine.cpp
index c9f9ec3..a0bba59 100644
--- a/libs/renderengine/skia/SkiaGLRenderEngine.cpp
+++ b/libs/renderengine/skia/SkiaGLRenderEngine.cpp
@@ -779,15 +779,9 @@
         const DisplaySettings& display, const std::vector<LayerSettings>& layers,
         const std::shared_ptr<ExternalTexture>& buffer, const bool /*useFramebufferCache*/,
         base::unique_fd&& bufferFence) {
-    ATRACE_NAME("SkiaGL::drawLayers");
+    ATRACE_NAME("SkiaGL::drawLayersInternal");
 
     std::lock_guard<std::mutex> lock(mRenderingMutex);
-    if (layers.empty()) {
-        ALOGV("Drawing empty layer stack");
-        resultPromise->set_value({NO_ERROR, base::unique_fd()});
-        return;
-    }
-
     if (buffer == nullptr) {
         ALOGE("No output buffer provided. Aborting GPU composition.");
         resultPromise->set_value({BAD_VALUE, base::unique_fd()});
@@ -1313,7 +1307,7 @@
  *  produce the insected roundRect. If false, the returned state of the radii param is undefined.
  */
 static bool intersectionIsRoundRect(const SkRect& bounds, const SkRect& crop,
-                                    const SkRect& insetCrop, float cornerRadius,
+                                    const SkRect& insetCrop, const vec2& cornerRadius,
                                     SkVector radii[4]) {
     const bool leftEqual = bounds.fLeft == crop.fLeft;
     const bool topEqual = bounds.fTop == crop.fTop;
@@ -1325,8 +1319,8 @@
     // In particular the round rect implementation will scale the value of all corner radii
     // if the sum of the radius along any edge is greater than the length of that edge.
     // See https://www.w3.org/TR/css-backgrounds-3/#corner-overlap
-    const bool requiredWidth = bounds.width() > (cornerRadius * 2);
-    const bool requiredHeight = bounds.height() > (cornerRadius * 2);
+    const bool requiredWidth = bounds.width() > (cornerRadius.x * 2);
+    const bool requiredHeight = bounds.height() > (cornerRadius.y * 2);
     if (!requiredWidth || !requiredHeight) {
         return false;
     }
@@ -1335,7 +1329,7 @@
     // contained within the cropped shape and does not need rounded.
     // compute the UpperLeft corner radius
     if (leftEqual && topEqual) {
-        radii[0].set(cornerRadius, cornerRadius);
+        radii[0].set(cornerRadius.x, cornerRadius.y);
     } else if ((leftEqual && bounds.fTop >= insetCrop.fTop) ||
                (topEqual && bounds.fLeft >= insetCrop.fLeft)) {
         radii[0].set(0, 0);
@@ -1344,7 +1338,7 @@
     }
     // compute the UpperRight corner radius
     if (rightEqual && topEqual) {
-        radii[1].set(cornerRadius, cornerRadius);
+        radii[1].set(cornerRadius.x, cornerRadius.y);
     } else if ((rightEqual && bounds.fTop >= insetCrop.fTop) ||
                (topEqual && bounds.fRight <= insetCrop.fRight)) {
         radii[1].set(0, 0);
@@ -1353,7 +1347,7 @@
     }
     // compute the BottomRight corner radius
     if (rightEqual && bottomEqual) {
-        radii[2].set(cornerRadius, cornerRadius);
+        radii[2].set(cornerRadius.x, cornerRadius.y);
     } else if ((rightEqual && bounds.fBottom <= insetCrop.fBottom) ||
                (bottomEqual && bounds.fRight <= insetCrop.fRight)) {
         radii[2].set(0, 0);
@@ -1362,7 +1356,7 @@
     }
     // compute the BottomLeft corner radius
     if (leftEqual && bottomEqual) {
-        radii[3].set(cornerRadius, cornerRadius);
+        radii[3].set(cornerRadius.x, cornerRadius.y);
     } else if ((leftEqual && bounds.fBottom <= insetCrop.fBottom) ||
                (bottomEqual && bounds.fLeft >= insetCrop.fLeft)) {
         radii[3].set(0, 0);
@@ -1375,22 +1369,22 @@
 
 inline std::pair<SkRRect, SkRRect> SkiaGLRenderEngine::getBoundsAndClip(const FloatRect& boundsRect,
                                                                         const FloatRect& cropRect,
-                                                                        const float cornerRadius) {
+                                                                        const vec2& cornerRadius) {
     const SkRect bounds = getSkRect(boundsRect);
     const SkRect crop = getSkRect(cropRect);
 
     SkRRect clip;
-    if (cornerRadius > 0) {
+    if (cornerRadius.x > 0 && cornerRadius.y > 0) {
         // it the crop and the bounds are equivalent or there is no crop then we don't need a clip
         if (bounds == crop || crop.isEmpty()) {
-            return {SkRRect::MakeRectXY(bounds, cornerRadius, cornerRadius), clip};
+            return {SkRRect::MakeRectXY(bounds, cornerRadius.x, cornerRadius.y), clip};
         }
 
         // This makes an effort to speed up common, simple bounds + clip combinations by
         // converting them to a single RRect draw. It is possible there are other cases
         // that can be converted.
         if (crop.contains(bounds)) {
-            const auto insetCrop = crop.makeInset(cornerRadius, cornerRadius);
+            const auto insetCrop = crop.makeInset(cornerRadius.x, cornerRadius.y);
             if (insetCrop.contains(bounds)) {
                 return {SkRRect::MakeRect(bounds), clip}; // clip is empty - no rounding required
             }
@@ -1404,7 +1398,7 @@
         }
 
         // we didn't hit any of our fast paths so set the clip to the cropRect
-        clip.setRectXY(crop, cornerRadius, cornerRadius);
+        clip.setRectXY(crop, cornerRadius.x, cornerRadius.y);
     }
 
     // if we hit this point then we either don't have rounded corners or we are going to rely
diff --git a/libs/renderengine/skia/SkiaGLRenderEngine.h b/libs/renderengine/skia/SkiaGLRenderEngine.h
index a8bc4f7..34f18c1 100644
--- a/libs/renderengine/skia/SkiaGLRenderEngine.h
+++ b/libs/renderengine/skia/SkiaGLRenderEngine.h
@@ -94,7 +94,8 @@
     inline SkRect getSkRect(const FloatRect& layer);
     inline SkRect getSkRect(const Rect& layer);
     inline std::pair<SkRRect, SkRRect> getBoundsAndClip(const FloatRect& bounds,
-                                                        const FloatRect& crop, float cornerRadius);
+                                                        const FloatRect& crop,
+                                                        const vec2& cornerRadius);
     inline bool layerHasBlur(const LayerSettings& layer, bool colorTransformModifiesAlpha);
     inline SkColor getSkColor(const vec4& color);
     inline SkM44 getSkM44(const mat4& matrix);
diff --git a/libs/renderengine/tests/RenderEngineTest.cpp b/libs/renderengine/tests/RenderEngineTest.cpp
index 61af698..f289730 100644
--- a/libs/renderengine/tests/RenderEngineTest.cpp
+++ b/libs/renderengine/tests/RenderEngineTest.cpp
@@ -444,7 +444,9 @@
                            const ubyte4& backgroundColor) {
         const Rect casterRect(castingLayer.geometry.boundaries);
         Region casterRegion = Region(casterRect);
-        const float casterCornerRadius = castingLayer.geometry.roundedCornersRadius;
+        const float casterCornerRadius = (castingLayer.geometry.roundedCornersRadius.x +
+                                          castingLayer.geometry.roundedCornersRadius.y) /
+                2.0;
         if (casterCornerRadius > 0.0f) {
             // ignore the corners if a corner radius is set
             Rect cornerRect(casterCornerRadius, casterCornerRadius);
@@ -1129,7 +1131,7 @@
     renderengine::LayerSettings layer;
     layer.sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR;
     layer.geometry.boundaries = fullscreenRect().toFloatRect();
-    layer.geometry.roundedCornersRadius = 5.0f;
+    layer.geometry.roundedCornersRadius = {5.0f, 5.0f};
     layer.geometry.roundedCornersCrop = fullscreenRect().toFloatRect();
     SourceVariant::fillColor(layer, 1.0f, 0.0f, 0.0f, this);
     layer.alpha = 1.0f;
@@ -1606,6 +1608,36 @@
     drawEmptyLayers();
 }
 
+TEST_P(RenderEngineTest, drawLayers_fillRedBufferAndEmptyBuffer) {
+    const auto& renderEngineFactory = GetParam();
+    if (renderEngineFactory->type() == renderengine::RenderEngine::RenderEngineType::GLES) {
+        // GLES-specific test
+        return;
+    }
+
+    initializeRenderEngine();
+    renderengine::DisplaySettings settings;
+    settings.physicalDisplay = fullscreenRect();
+    settings.clip = fullscreenRect();
+    settings.outputDataspace = ui::Dataspace::V0_SRGB_LINEAR;
+
+    // add a red layer
+    renderengine::LayerSettings layerOne{
+            .geometry.boundaries = fullscreenRect().toFloatRect(),
+            .source.solidColor = half3(1.0f, 0.0f, 0.0f),
+            .alpha = 1.f,
+    };
+
+    std::vector<renderengine::LayerSettings> layersFirst{layerOne};
+    invokeDraw(settings, layersFirst);
+    expectBufferColor(fullscreenRect(), 255, 0, 0, 255);
+
+    // re-draw with an empty layer above it, and we get a transparent black one
+    std::vector<renderengine::LayerSettings> layersSecond;
+    invokeDraw(settings, layersSecond);
+    expectBufferColor(fullscreenRect(), 0, 0, 0, 0);
+}
+
 TEST_P(RenderEngineTest, drawLayers_withoutBuffers_withColorTransform) {
     initializeRenderEngine();
 
@@ -2131,7 +2163,7 @@
     casterBounds.offsetBy(shadowLength + 1, shadowLength + 1);
     renderengine::LayerSettings castingLayer;
     castingLayer.geometry.boundaries = casterBounds.toFloatRect();
-    castingLayer.geometry.roundedCornersRadius = 3.0f;
+    castingLayer.geometry.roundedCornersRadius = {3.0f, 3.0f};
     castingLayer.geometry.roundedCornersCrop = casterBounds.toFloatRect();
     castingLayer.alpha = 1.0f;
     renderengine::ShadowSettings settings =
@@ -2219,7 +2251,8 @@
     renderengine::LayerSettings redLayer;
     redLayer.sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR;
     redLayer.geometry.boundaries = fullscreenRect().toFloatRect();
-    redLayer.geometry.roundedCornersRadius = 5.0f;
+    redLayer.geometry.roundedCornersRadius = {5.0f, 5.0f};
+
     redLayer.geometry.roundedCornersCrop = fullscreenRect().toFloatRect();
     // Red background.
     redLayer.source.solidColor = half3(1.0f, 0.0f, 0.0f);
@@ -2231,7 +2264,7 @@
     renderengine::LayerSettings greenLayer;
     greenLayer.sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR;
     greenLayer.geometry.boundaries = fullscreenRect().toFloatRect();
-    greenLayer.geometry.roundedCornersRadius = 5.0f;
+    greenLayer.geometry.roundedCornersRadius = {5.0f, 5.0f};
     // Bottom right corner is not going to be rounded.
     greenLayer.geometry.roundedCornersCrop =
             Rect(DEFAULT_DISPLAY_WIDTH / 3, DEFAULT_DISPLAY_HEIGHT / 3, DEFAULT_DISPLAY_HEIGHT,
@@ -2268,7 +2301,7 @@
     renderengine::LayerSettings redLayer;
     redLayer.sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR;
     redLayer.geometry.boundaries = fullscreenRect().toFloatRect();
-    redLayer.geometry.roundedCornersRadius = 5.0f;
+    redLayer.geometry.roundedCornersRadius = {5.0f, 5.0f};
     redLayer.geometry.roundedCornersCrop = fullscreenRect().toFloatRect();
     // Red background.
     redLayer.source.solidColor = half3(1.0f, 0.0f, 0.0f);
@@ -2313,7 +2346,7 @@
     renderengine::LayerSettings redLayer;
     redLayer.sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR;
     redLayer.geometry.boundaries = FloatRect(0, 0, DEFAULT_DISPLAY_WIDTH, 32);
-    redLayer.geometry.roundedCornersRadius = 64;
+    redLayer.geometry.roundedCornersRadius = {64.0f, 64.0f};
     redLayer.geometry.roundedCornersCrop = FloatRect(0, 0, DEFAULT_DISPLAY_WIDTH, 128);
     // Red background.
     redLayer.source.solidColor = half3(1.0f, 0.0f, 0.0f);
@@ -2334,6 +2367,49 @@
     expectBufferColor(Point(DEFAULT_DISPLAY_WIDTH / 2, 31), 255, 0, 0, 255);
 }
 
+TEST_P(RenderEngineTest, testRoundedCornersXY) {
+    if (GetParam()->type() != renderengine::RenderEngine::RenderEngineType::SKIA_GL) {
+        GTEST_SKIP();
+    }
+
+    initializeRenderEngine();
+
+    renderengine::DisplaySettings settings;
+    settings.physicalDisplay = fullscreenRect();
+    settings.clip = fullscreenRect();
+    settings.outputDataspace = ui::Dataspace::V0_SRGB_LINEAR;
+
+    std::vector<renderengine::LayerSettings> layers;
+
+    renderengine::LayerSettings redLayer;
+    redLayer.sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR;
+    redLayer.geometry.boundaries = fullscreenRect().toFloatRect();
+    redLayer.geometry.roundedCornersRadius = {5.0f, 20.0f};
+    redLayer.geometry.roundedCornersCrop = fullscreenRect().toFloatRect();
+    // Red background.
+    redLayer.source.solidColor = half3(1.0f, 0.0f, 0.0f);
+    redLayer.alpha = 1.0f;
+
+    layers.push_back(redLayer);
+
+    invokeDraw(settings, layers);
+
+    // Due to roundedCornersRadius, the corners are untouched.
+    expectBufferColor(Point(0, 0), 0, 0, 0, 0);
+    expectBufferColor(Point(DEFAULT_DISPLAY_WIDTH - 1, 0), 0, 0, 0, 0);
+    expectBufferColor(Point(0, DEFAULT_DISPLAY_HEIGHT - 1), 0, 0, 0, 0);
+    expectBufferColor(Point(DEFAULT_DISPLAY_WIDTH - 1, DEFAULT_DISPLAY_HEIGHT - 1), 0, 0, 0, 0);
+
+    // Y-axis draws a larger radius, check that its untouched as well
+    expectBufferColor(Point(0, DEFAULT_DISPLAY_HEIGHT - 5), 0, 0, 0, 0);
+    expectBufferColor(Point(DEFAULT_DISPLAY_WIDTH - 1, DEFAULT_DISPLAY_HEIGHT - 5), 0, 0, 0, 0);
+    expectBufferColor(Point(DEFAULT_DISPLAY_WIDTH - 1, 5), 0, 0, 0, 0);
+    expectBufferColor(Point(0, 5), 0, 0, 0, 0);
+
+    //  middle should be red
+    expectBufferColor(Point(DEFAULT_DISPLAY_WIDTH / 2, DEFAULT_DISPLAY_HEIGHT / 2), 255, 0, 0, 255);
+}
+
 TEST_P(RenderEngineTest, testClear) {
     initializeRenderEngine();
 
diff --git a/opengl/libs/EGL/egl_platform_entries.cpp b/opengl/libs/EGL/egl_platform_entries.cpp
index f4dbe49..7619a50 100644
--- a/opengl/libs/EGL/egl_platform_entries.cpp
+++ b/opengl/libs/EGL/egl_platform_entries.cpp
@@ -1453,7 +1453,11 @@
             setError(EGL_BAD_SURFACE, EGL_FALSE);
         }
         int err = native_window_set_auto_refresh(s->getNativeWindow(), value != 0);
-        return (err == 0) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        if (err != 0) {
+            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        } else if (!s->cnx->useAngle) {
+            return EGL_TRUE;
+        } // else if ANGLE, fall through to the call to the driver (i.e. ANGLE) below
     }
 
     if (attribute == EGL_TIMESTAMPS_ANDROID) {
@@ -1463,7 +1467,11 @@
             return EGL_TRUE;
         }
         int err = native_window_enable_frame_timestamps(s->getNativeWindow(), value != 0);
-        return (err == 0) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        if (err != 0) {
+            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        } else if (!s->cnx->useAngle) {
+            return EGL_TRUE;
+        } // else if ANGLE, fall through to the call to the driver (i.e. ANGLE) below
     }
 
     if (s->setSmpte2086Attribute(attribute, value)) {
diff --git a/services/gpuservice/tests/unittests/GpuStatsTest.cpp b/services/gpuservice/tests/unittests/GpuStatsTest.cpp
index 3c7644f..7ea2288 100644
--- a/services/gpuservice/tests/unittests/GpuStatsTest.cpp
+++ b/services/gpuservice/tests/unittests/GpuStatsTest.cpp
@@ -76,6 +76,12 @@
                 ::testing::UnitTest::GetInstance()->current_test_info();
         ALOGD("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());
 
+        // This is required for test due to GpuStats instance spawns binder transactions
+        // in its destructor. After the gtest destructor test exits immidiatelly.
+        // It results in binder thread not able to process above binder transactions and memory leak
+        // occures. Binder thread needs time to process callbacks transactions.
+        // It leads to GpuStats instance destructor needs to be called in advance.
+        mGpuStats.reset(nullptr);
         // performs all pending callbacks until all data has been consumed
         // gives time to process binder transactions by thread pool
         looper->pollAll(1000);
diff --git a/services/inputflinger/InputClassifier.cpp b/services/inputflinger/InputClassifier.cpp
index 8ce2f35..21695c3 100644
--- a/services/inputflinger/InputClassifier.cpp
+++ b/services/inputflinger/InputClassifier.cpp
@@ -331,20 +331,9 @@
     enqueueEvent(std::make_unique<NotifyDeviceResetArgs>(args));
 }
 
-const char* MotionClassifier::getServiceStatus() REQUIRES(mLock) {
-    if (!mService) {
-        return "null";
-    }
-
-    if (AIBinder_ping(mService->asBinder().get()) == STATUS_OK) {
-        return "running";
-    }
-    return "not responding";
-}
-
 void MotionClassifier::dump(std::string& dump) {
     std::scoped_lock lock(mLock);
-    dump += StringPrintf(INDENT2 "mService status: %s\n", getServiceStatus());
+    dump += StringPrintf(INDENT2 "mService connected: %s\n", mService ? "true" : "false");
     dump += StringPrintf(INDENT2 "mEvents: %zu element(s) (max=%zu)\n",
             mEvents.size(), MAX_EVENTS);
     dump += INDENT2 "mClassifications, mLastDownTimes:\n";
@@ -365,6 +354,18 @@
     }
 }
 
+void MotionClassifier::monitor() {
+    std::scoped_lock lock(mLock);
+    if (mService) {
+        // Ping the HAL service to ensure it is alive and not blocked.
+        const binder_status_t status = AIBinder_ping(mService->asBinder().get());
+        if (status != STATUS_OK) {
+            ALOGW("IInputProcessor HAL is not responding; binder ping result: %s",
+                  AStatus_getDescription(AStatus_fromStatus(status)));
+        }
+    }
+}
+
 // --- InputClassifier ---
 
 InputClassifier::InputClassifier(InputListenerInterface& listener) : mQueuedListener(listener) {}
@@ -504,6 +505,7 @@
 
 void InputClassifier::monitor() {
     std::scoped_lock lock(mLock);
+    if (mMotionClassifier) mMotionClassifier->monitor();
 }
 
 InputClassifier::~InputClassifier() {
diff --git a/services/inputflinger/InputClassifier.h b/services/inputflinger/InputClassifier.h
index 56cf760..9b31a3c 100644
--- a/services/inputflinger/InputClassifier.h
+++ b/services/inputflinger/InputClassifier.h
@@ -78,9 +78,14 @@
     virtual void reset(const NotifyDeviceResetArgs& args) = 0;
 
     /**
-     * Dump the state of the motion classifier
+     * Dump the state of the motion classifier.
      */
     virtual void dump(std::string& dump) = 0;
+
+    /**
+     * Called by the heartbeat to ensure the HAL is still processing normally.
+     */
+    virtual void monitor() = 0;
 };
 
 /**
@@ -96,7 +101,7 @@
      */
     virtual void dump(std::string& dump) = 0;
 
-    /* Called by the heatbeat to ensures that the classifier has not deadlocked. */
+    /** Called by the heartbeat to ensure that the classifier has not deadlocked. */
     virtual void monitor() = 0;
 
     InputClassifierInterface() { }
@@ -155,13 +160,14 @@
     virtual void reset(const NotifyDeviceResetArgs& args) override;
 
     virtual void dump(std::string& dump) override;
+    virtual void monitor() override;
 
 private:
     friend class MotionClassifierTest; // to create MotionClassifier with a test HAL implementation
     explicit MotionClassifier(
             std::shared_ptr<aidl::android::hardware::input::processor::IInputProcessor> service);
 
-    // The events that need to be sent to the HAL.
+    /** The events that need to be sent to the HAL. */
     BlockingQueue<ClassifierEvent> mEvents;
     /**
      * Add an event to the queue mEvents.
diff --git a/services/inputflinger/OWNERS b/services/inputflinger/OWNERS
index 82c6ee1..c88bfe9 100644
--- a/services/inputflinger/OWNERS
+++ b/services/inputflinger/OWNERS
@@ -1,3 +1 @@
-lzye@google.com
-michaelwr@google.com
-svv@google.com
+include platform/frameworks/base:/INPUT_OWNERS
diff --git a/services/inputflinger/TEST_MAPPING b/services/inputflinger/TEST_MAPPING
index 318940b..f673a28 100644
--- a/services/inputflinger/TEST_MAPPING
+++ b/services/inputflinger/TEST_MAPPING
@@ -45,6 +45,14 @@
       ]
     },
     {
+      "name": "CtsWidgetTestCases",
+      "options": [
+        {
+          "include-filter": "android.widget.cts.NumberPickerTest"
+        }
+      ]
+    },
+    {
       "name": "FrameworksCoreTests",
       "options": [
         {
@@ -124,6 +132,14 @@
       ]
     },
     {
+      "name": "CtsWidgetTestCases",
+      "options": [
+        {
+          "include-filter": "android.widget.cts.NumberPickerTest"
+        }
+      ]
+    },
+    {
       "name": "FrameworksCoreTests",
       "options": [
         {
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index 5e92f0d..625c367 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -1872,6 +1872,17 @@
     return false;
 }
 
+static std::optional<nsecs_t> getDownTime(const EventEntry& eventEntry) {
+    if (eventEntry.type == EventEntry::Type::KEY) {
+        const KeyEntry& keyEntry = static_cast<const KeyEntry&>(eventEntry);
+        return keyEntry.downTime;
+    } else if (eventEntry.type == EventEntry::Type::MOTION) {
+        const MotionEntry& motionEntry = static_cast<const MotionEntry&>(eventEntry);
+        return motionEntry.downTime;
+    }
+    return std::nullopt;
+}
+
 InputEventInjectionResult InputDispatcher::findFocusedWindowTargetsLocked(
         nsecs_t currentTime, const EventEntry& entry, std::vector<InputTarget>& inputTargets,
         nsecs_t* nextWakeupTime) {
@@ -1961,7 +1972,7 @@
     // Success!  Output targets.
     addWindowTargetLocked(focusedWindowHandle,
                           InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS,
-                          BitSet32(0), inputTargets);
+                          BitSet32(0), getDownTime(entry), inputTargets);
 
     // Done.
     return InputEventInjectionResult::SUCCEEDED;
@@ -2200,7 +2211,8 @@
                 pointerIds.markBit(pointerId);
             }
 
-            tempTouchState.addOrUpdateWindow(windowHandle, targetFlags, pointerIds);
+            tempTouchState.addOrUpdateWindow(windowHandle, targetFlags, pointerIds,
+                                             entry.eventTime);
         }
 
         // If any existing window is pilfering pointers from newly added window, remove it
@@ -2287,7 +2299,8 @@
                 if (isSplit) {
                     pointerIds.markBit(entry.pointerProperties[0].id);
                 }
-                tempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds);
+                tempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds,
+                                                 entry.eventTime);
             }
         }
     }
@@ -2404,7 +2417,7 @@
                                                        InputTarget::
                                                                FLAG_WINDOW_IS_PARTIALLY_OBSCURED |
                                                        InputTarget::FLAG_DISPATCH_AS_IS,
-                                               BitSet32(0));
+                                               BitSet32(0), entry.eventTime);
                 }
             }
         }
@@ -2415,7 +2428,8 @@
 
     for (const TouchedWindow& touchedWindow : tempTouchState.windows) {
         addWindowTargetLocked(touchedWindow.windowHandle, touchedWindow.targetFlags,
-                              touchedWindow.pointerIds, inputTargets);
+                              touchedWindow.pointerIds, touchedWindow.firstDownTimeInTarget,
+                              inputTargets);
     }
 
     // Drop the outside or hover touch windows since we will not care about them
@@ -2600,6 +2614,7 @@
 
 void InputDispatcher::addWindowTargetLocked(const sp<WindowInfoHandle>& windowHandle,
                                             int32_t targetFlags, BitSet32 pointerIds,
+                                            std::optional<nsecs_t> firstDownTimeInTarget,
                                             std::vector<InputTarget>& inputTargets) {
     std::vector<InputTarget>::iterator it =
             std::find_if(inputTargets.begin(), inputTargets.end(),
@@ -2621,6 +2636,7 @@
         inputTarget.inputChannel = inputChannel;
         inputTarget.flags = targetFlags;
         inputTarget.globalScaleFactor = windowInfo->globalScaleFactor;
+        inputTarget.firstDownTimeInTarget = firstDownTimeInTarget;
         const auto& displayInfoIt = mDisplayInfos.find(windowInfo->displayId);
         if (displayInfoIt != mDisplayInfos.end()) {
             inputTarget.displayTransform = displayInfoIt->second.transform;
@@ -2646,6 +2662,8 @@
         InputTarget target;
         target.inputChannel = monitor.inputChannel;
         target.flags = InputTarget::FLAG_DISPATCH_AS_IS;
+        // target.firstDownTimeInTarget is not set for global monitors. It is only required in split
+        // touch and global monitoring works as intended even without setting firstDownTimeInTarget
         if (const auto& it = mDisplayInfos.find(displayId); it != mDisplayInfos.end()) {
             target.displayTransform = it->second.transform;
         }
@@ -2930,8 +2948,12 @@
 
         const MotionEntry& originalMotionEntry = static_cast<const MotionEntry&>(*eventEntry);
         if (inputTarget.pointerIds.count() != originalMotionEntry.pointerCount) {
+            LOG_ALWAYS_FATAL_IF(!inputTarget.firstDownTimeInTarget.has_value(),
+                                "Splitting motion events requires a down time to be set for the "
+                                "target");
             std::unique_ptr<MotionEntry> splitMotionEntry =
-                    splitMotionEvent(originalMotionEntry, inputTarget.pointerIds);
+                    splitMotionEvent(originalMotionEntry, inputTarget.pointerIds,
+                                     inputTarget.firstDownTimeInTarget.value());
             if (!splitMotionEntry) {
                 return; // split event was dropped
             }
@@ -3687,15 +3709,13 @@
 }
 
 void InputDispatcher::synthesizePointerDownEventsForConnectionLocked(
-        const sp<Connection>& connection) {
+        const nsecs_t downTime, const sp<Connection>& connection) {
     if (connection->status == Connection::Status::BROKEN) {
         return;
     }
 
-    nsecs_t currentTime = now();
-
     std::vector<std::unique_ptr<EventEntry>> downEvents =
-            connection->inputState.synthesizePointerDownEvents(currentTime);
+            connection->inputState.synthesizePointerDownEvents(downTime);
 
     if (downEvents.empty()) {
         return;
@@ -3743,11 +3763,11 @@
                                    InputTarget::FLAG_DISPATCH_AS_IS);
     }
 
-    startDispatchCycleLocked(currentTime, connection);
+    startDispatchCycleLocked(downTime, connection);
 }
 
 std::unique_ptr<MotionEntry> InputDispatcher::splitMotionEvent(
-        const MotionEntry& originalMotionEntry, BitSet32 pointerIds) {
+        const MotionEntry& originalMotionEntry, BitSet32 pointerIds, nsecs_t splitDownTime) {
     ALOG_ASSERT(pointerIds.value != 0);
 
     uint32_t splitPointerIndexMap[MAX_POINTERS];
@@ -3815,6 +3835,13 @@
         }
     }
 
+    if (action == AMOTION_EVENT_ACTION_DOWN) {
+        LOG_ALWAYS_FATAL_IF(splitDownTime != originalMotionEntry.eventTime,
+                            "Split motion event has mismatching downTime and eventTime for "
+                            "ACTION_DOWN, motionEntry=%s, splitDownTime=%" PRId64 "ms",
+                            originalMotionEntry.getDescription().c_str(), ns2ms(splitDownTime));
+    }
+
     int32_t newId = mIdGenerator.nextId();
     if (ATRACE_ENABLED()) {
         std::string message = StringPrintf("Split MotionEvent(id=0x%" PRIx32
@@ -3835,9 +3862,9 @@
                                           originalMotionEntry.xPrecision,
                                           originalMotionEntry.yPrecision,
                                           originalMotionEntry.xCursorPosition,
-                                          originalMotionEntry.yCursorPosition,
-                                          originalMotionEntry.downTime, splitPointerCount,
-                                          splitPointerProperties, splitPointerCoords);
+                                          originalMotionEntry.yCursorPosition, splitDownTime,
+                                          splitPointerCount, splitPointerProperties,
+                                          splitPointerCoords);
 
     if (originalMotionEntry.injectionState) {
         splitMotionEntry->injectionState = originalMotionEntry.injectionState;
@@ -5074,12 +5101,13 @@
         state->removeWindowByToken(fromToken);
 
         // Add new window.
+        nsecs_t downTimeInTarget = now();
         int32_t newTargetFlags =
                 oldTargetFlags & (InputTarget::FLAG_SPLIT | InputTarget::FLAG_DISPATCH_AS_IS);
         if (canReceiveForegroundTouches(*toWindowHandle->getInfo())) {
             newTargetFlags |= InputTarget::FLAG_FOREGROUND;
         }
-        state->addOrUpdateWindow(toWindowHandle, newTargetFlags, pointerIds);
+        state->addOrUpdateWindow(toWindowHandle, newTargetFlags, pointerIds, downTimeInTarget);
 
         // Store the dragging window.
         if (isDragDrop) {
@@ -5103,7 +5131,7 @@
                     options(CancelationOptions::CANCEL_POINTER_EVENTS,
                             "transferring touch focus from this window to another window");
             synthesizeCancelationEventsForConnectionLocked(fromConnection, options);
-            synthesizePointerDownEventsForConnectionLocked(toConnection);
+            synthesizePointerDownEventsForConnectionLocked(downTimeInTarget, toConnection);
         }
 
         if (DEBUG_FOCUS) {
@@ -5253,10 +5281,12 @@
                 dump += INDENT3 "Windows:\n";
                 for (size_t i = 0; i < state.windows.size(); i++) {
                     const TouchedWindow& touchedWindow = state.windows[i];
-                    dump += StringPrintf(INDENT4
-                                         "%zu: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n",
+                    dump += StringPrintf(INDENT4 "%zu: name='%s', pointerIds=0x%0x, "
+                                                 "targetFlags=0x%x, firstDownTimeInTarget=%" PRId64
+                                                 "ms\n",
                                          i, touchedWindow.windowHandle->getName().c_str(),
-                                         touchedWindow.pointerIds.value, touchedWindow.targetFlags);
+                                         touchedWindow.pointerIds.value, touchedWindow.targetFlags,
+                                         ns2ms(touchedWindow.firstDownTimeInTarget.value_or(0)));
                 }
             } else {
                 dump += INDENT3 "Windows: <none>\n";
diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index 50124a6..da4af48 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -550,6 +550,7 @@
 
     void addWindowTargetLocked(const sp<android::gui::WindowInfoHandle>& windowHandle,
                                int32_t targetFlags, BitSet32 pointerIds,
+                               std::optional<nsecs_t> firstDownTimeInTarget,
                                std::vector<InputTarget>& inputTargets) REQUIRES(mLock);
     void addGlobalMonitoringTargetsLocked(std::vector<InputTarget>& inputTargets, int32_t displayId)
             REQUIRES(mLock);
@@ -621,12 +622,14 @@
                                                         const CancelationOptions& options)
             REQUIRES(mLock);
 
-    void synthesizePointerDownEventsForConnectionLocked(const sp<Connection>& connection)
+    void synthesizePointerDownEventsForConnectionLocked(const nsecs_t downTime,
+                                                        const sp<Connection>& connection)
             REQUIRES(mLock);
 
-    // Splitting motion events across windows.
+    // Splitting motion events across windows. When splitting motion event for a target,
+    // splitDownTime refers to the time of first 'down' event on that particular target
     std::unique_ptr<MotionEntry> splitMotionEvent(const MotionEntry& originalMotionEntry,
-                                                  BitSet32 pointerIds);
+                                                  BitSet32 pointerIds, nsecs_t splitDownTime);
 
     // Reset and drop everything the dispatcher is doing.
     void resetAndDropEverythingLocked(const char* reason) REQUIRES(mLock);
diff --git a/services/inputflinger/dispatcher/InputTarget.h b/services/inputflinger/dispatcher/InputTarget.h
index 0725389..ac20dab 100644
--- a/services/inputflinger/dispatcher/InputTarget.h
+++ b/services/inputflinger/dispatcher/InputTarget.h
@@ -106,6 +106,9 @@
     // The subset of pointer ids to include in motion events dispatched to this input target
     // if FLAG_SPLIT is set.
     BitSet32 pointerIds;
+    // Event time for the first motion event (ACTION_DOWN) dispatched to this input target if
+    // FLAG_SPLIT is set.
+    std::optional<nsecs_t> firstDownTimeInTarget;
     // The data is stored by the pointerId. Use the bit position of pointerIds to look up
     // Transform per pointerId.
     ui::Transform pointerTransforms[MAX_POINTERS];
diff --git a/services/inputflinger/dispatcher/TouchState.cpp b/services/inputflinger/dispatcher/TouchState.cpp
index 51c6826..cf0c38a 100644
--- a/services/inputflinger/dispatcher/TouchState.cpp
+++ b/services/inputflinger/dispatcher/TouchState.cpp
@@ -30,7 +30,7 @@
 }
 
 void TouchState::addOrUpdateWindow(const sp<WindowInfoHandle>& windowHandle, int32_t targetFlags,
-                                   BitSet32 pointerIds) {
+                                   BitSet32 pointerIds, std::optional<nsecs_t> eventTime) {
     if (targetFlags & InputTarget::FLAG_SPLIT) {
         split = true;
     }
@@ -42,7 +42,13 @@
             if (targetFlags & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) {
                 touchedWindow.targetFlags &= ~InputTarget::FLAG_DISPATCH_AS_IS;
             }
+            // For cases like hover enter/exit or DISPATCH_AS_OUTSIDE a touch window might not have
+            // downTime set initially. Need to update existing window when an pointer is down for
+            // the window.
             touchedWindow.pointerIds.value |= pointerIds.value;
+            if (!touchedWindow.firstDownTimeInTarget.has_value()) {
+                touchedWindow.firstDownTimeInTarget = eventTime;
+            }
             return;
         }
     }
@@ -51,6 +57,7 @@
     touchedWindow.windowHandle = windowHandle;
     touchedWindow.targetFlags = targetFlags;
     touchedWindow.pointerIds = pointerIds;
+    touchedWindow.firstDownTimeInTarget = eventTime;
     windows.push_back(touchedWindow);
 }
 
diff --git a/services/inputflinger/dispatcher/TouchState.h b/services/inputflinger/dispatcher/TouchState.h
index 327863f..1fb51e1 100644
--- a/services/inputflinger/dispatcher/TouchState.h
+++ b/services/inputflinger/dispatcher/TouchState.h
@@ -47,7 +47,8 @@
 
     void reset();
     void addOrUpdateWindow(const sp<android::gui::WindowInfoHandle>& windowHandle,
-                           int32_t targetFlags, BitSet32 pointerIds);
+                           int32_t targetFlags, BitSet32 pointerIds,
+                           std::optional<nsecs_t> eventTime = std::nullopt);
     void removeWindowByToken(const sp<IBinder>& token);
     void filterNonAsIsTouchWindows();
     void filterWindowsExcept(const sp<IBinder>& token);
diff --git a/services/inputflinger/dispatcher/TouchedWindow.h b/services/inputflinger/dispatcher/TouchedWindow.h
index 83b52a4..0962d0c 100644
--- a/services/inputflinger/dispatcher/TouchedWindow.h
+++ b/services/inputflinger/dispatcher/TouchedWindow.h
@@ -31,6 +31,9 @@
     int32_t targetFlags;
     BitSet32 pointerIds; // zero unless target flag FLAG_SPLIT is set
     bool isPilferingPointers = false;
+    // Time at which the first action down occurred on this window.
+    // NOTE: This is not initialized in case of HOVER entry/exit and DISPATCH_AS_OUTSIDE scenario.
+    std::optional<nsecs_t> firstDownTimeInTarget;
 };
 
 } // namespace inputdispatcher
diff --git a/services/inputflinger/host/InputDriver.cpp b/services/inputflinger/host/InputDriver.cpp
index 2ebdbcf..97d57e4 100644
--- a/services/inputflinger/host/InputDriver.cpp
+++ b/services/inputflinger/host/InputDriver.cpp
@@ -240,19 +240,16 @@
     return nullptr;
 }
 
-input_property_t* InputDriver::inputGetDeviceProperty(input_property_map_t* map,
-        const char* key) {
-    String8 keyString(key);
+input_property_t* InputDriver::inputGetDeviceProperty(input_property_map_t* map, const char* key) {
     if (map != nullptr) {
-        if (map->propertyMap->hasProperty(keyString)) {
-            auto prop = new input_property_t();
-            if (!map->propertyMap->tryGetProperty(keyString, prop->value)) {
-                delete prop;
-                return nullptr;
-            }
-            prop->key = keyString;
-            return prop;
+        std::string value;
+        auto prop = std::make_unique<input_property_t>();
+        if (!map->propertyMap->tryGetProperty(key, value)) {
+            return nullptr;
         }
+        prop->key = key;
+        prop->value = value.c_str();
+        return prop.release();
     }
     return nullptr;
 }
diff --git a/services/inputflinger/reader/Android.bp b/services/inputflinger/reader/Android.bp
index 3bd3275..01146a3 100644
--- a/services/inputflinger/reader/Android.bp
+++ b/services/inputflinger/reader/Android.bp
@@ -71,7 +71,7 @@
         "libstatslog",
         "libui",
         "libutils",
-        "PlatformProperties",
+        "libPlatformProperties",
     ],
     static_libs: [
         "libc++fs",
diff --git a/services/inputflinger/reader/EventHub.cpp b/services/inputflinger/reader/EventHub.cpp
index 6a8ed49..a17d2c0 100644
--- a/services/inputflinger/reader/EventHub.cpp
+++ b/services/inputflinger/reader/EventHub.cpp
@@ -502,7 +502,7 @@
 bool EventHub::Device::isExternalDeviceLocked() {
     if (configuration) {
         bool value;
-        if (configuration->tryGetProperty(String8("device.internal"), value)) {
+        if (configuration->tryGetProperty("device.internal", value)) {
             return !value;
         }
     }
@@ -512,7 +512,7 @@
 bool EventHub::Device::deviceHasMicLocked() {
     if (configuration) {
         bool value;
-        if (configuration->tryGetProperty(String8("audio.mic"), value)) {
+        if (configuration->tryGetProperty("audio.mic", value)) {
             return value;
         }
     }
@@ -687,6 +687,7 @@
     LOG_ALWAYS_FATAL_IF(mEpollFd < 0, "Could not create epoll instance: %s", strerror(errno));
 
     mINotifyFd = inotify_init1(IN_CLOEXEC);
+    LOG_ALWAYS_FATAL_IF(mINotifyFd < 0, "Could not create inotify instance: %s", strerror(errno));
 
     std::error_code errorCode;
     bool isDeviceInotifyAdded = false;
@@ -1723,7 +1724,10 @@
         // before closing the devices.
         if (mPendingINotify && mPendingEventIndex >= mPendingEventCount) {
             mPendingINotify = false;
-            readNotifyLocked();
+            const auto res = readNotifyLocked();
+            if (!res.ok()) {
+                ALOGW("Failed to read from inotify: %s", res.error().message().c_str());
+            }
             deviceChanged = true;
         }
 
@@ -2072,10 +2076,9 @@
     }
 
     // See if this is a rotary encoder type device.
-    String8 deviceType = String8();
-    if (device->configuration &&
-        device->configuration->tryGetProperty(String8("device.type"), deviceType)) {
-        if (!deviceType.compare(String8("rotaryEncoder"))) {
+    std::string deviceType;
+    if (device->configuration && device->configuration->tryGetProperty("device.type", deviceType)) {
+        if (deviceType == "rotaryEncoder") {
             device->classes |= InputDeviceClass::ROTARY_ENCODER;
         }
     }
@@ -2413,53 +2416,56 @@
     mDevices.erase(device.id);
 }
 
-status_t EventHub::readNotifyLocked() {
-    int res;
-    char event_buf[512];
-    int event_size;
-    int event_pos = 0;
-    struct inotify_event* event;
+base::Result<void> EventHub::readNotifyLocked() {
+    static constexpr auto EVENT_SIZE = static_cast<ssize_t>(sizeof(inotify_event));
+    uint8_t eventBuffer[512];
+    ssize_t sizeRead;
 
     ALOGV("EventHub::readNotify nfd: %d\n", mINotifyFd);
-    res = read(mINotifyFd, event_buf, sizeof(event_buf));
-    if (res < (int)sizeof(*event)) {
-        if (errno == EINTR) return 0;
-        ALOGW("could not get event, %s\n", strerror(errno));
-        return -1;
-    }
+    do {
+        sizeRead = read(mINotifyFd, eventBuffer, sizeof(eventBuffer));
+    } while (sizeRead < 0 && errno == EINTR);
 
-    while (res >= (int)sizeof(*event)) {
-        event = (struct inotify_event*)(event_buf + event_pos);
-        if (event->len) {
-            if (event->wd == mDeviceInputWd) {
-                std::string filename = std::string(DEVICE_INPUT_PATH) + "/" + event->name;
-                if (event->mask & IN_CREATE) {
-                    openDeviceLocked(filename);
-                } else {
-                    ALOGI("Removing device '%s' due to inotify event\n", filename.c_str());
-                    closeDeviceByPathLocked(filename);
-                }
-            } else if (event->wd == mDeviceWd) {
-                if (isV4lTouchNode(event->name)) {
-                    std::string filename = std::string(DEVICE_PATH) + "/" + event->name;
-                    if (event->mask & IN_CREATE) {
-                        openVideoDeviceLocked(filename);
-                    } else {
-                        ALOGI("Removing video device '%s' due to inotify event", filename.c_str());
-                        closeVideoDeviceByPathLocked(filename);
-                    }
-                } else if (strcmp(event->name, "input") == 0 && event->mask & IN_CREATE) {
-                    addDeviceInputInotify();
-                }
-            } else {
-                LOG_ALWAYS_FATAL("Unexpected inotify event, wd = %i", event->wd);
-            }
-        }
-        event_size = sizeof(*event) + event->len;
-        res -= event_size;
-        event_pos += event_size;
+    if (sizeRead < EVENT_SIZE) return Errorf("could not get event, %s", strerror(errno));
+
+    for (ssize_t eventPos = 0; sizeRead >= EVENT_SIZE;) {
+        const inotify_event* event;
+        event = (const inotify_event*)(eventBuffer + eventPos);
+        if (event->len == 0) continue;
+
+        handleNotifyEventLocked(*event);
+
+        const ssize_t eventSize = EVENT_SIZE + event->len;
+        sizeRead -= eventSize;
+        eventPos += eventSize;
     }
-    return 0;
+    return {};
+}
+
+void EventHub::handleNotifyEventLocked(const inotify_event& event) {
+    if (event.wd == mDeviceInputWd) {
+        std::string filename = std::string(DEVICE_INPUT_PATH) + "/" + event.name;
+        if (event.mask & IN_CREATE) {
+            openDeviceLocked(filename);
+        } else {
+            ALOGI("Removing device '%s' due to inotify event\n", filename.c_str());
+            closeDeviceByPathLocked(filename);
+        }
+    } else if (event.wd == mDeviceWd) {
+        if (isV4lTouchNode(event.name)) {
+            std::string filename = std::string(DEVICE_PATH) + "/" + event.name;
+            if (event.mask & IN_CREATE) {
+                openVideoDeviceLocked(filename);
+            } else {
+                ALOGI("Removing video device '%s' due to inotify event", filename.c_str());
+                closeVideoDeviceByPathLocked(filename);
+            }
+        } else if (strcmp(event.name, "input") == 0 && event.mask & IN_CREATE) {
+            addDeviceInputInotify();
+        }
+    } else {
+        LOG_ALWAYS_FATAL("Unexpected inotify event, wd = %i", event.wd);
+    }
 }
 
 status_t EventHub::scanDirLocked(const std::string& dirname) {
diff --git a/services/inputflinger/reader/include/EventHub.h b/services/inputflinger/reader/include/EventHub.h
index 5453ebb..79188aa 100644
--- a/services/inputflinger/reader/include/EventHub.h
+++ b/services/inputflinger/reader/include/EventHub.h
@@ -36,7 +36,6 @@
 #include <sys/epoll.h>
 #include <utils/BitSet.h>
 #include <utils/Errors.h>
-#include <utils/KeyedVector.h>
 #include <utils/List.h>
 #include <utils/Log.h>
 #include <utils/Mutex.h>
@@ -44,6 +43,8 @@
 #include "TouchVideoDevice.h"
 #include "VibrationElement.h"
 
+struct inotify_event;
+
 namespace android {
 
 /* Number of colors : {red, green, blue} */
@@ -648,7 +649,8 @@
     status_t scanDirLocked(const std::string& dirname) REQUIRES(mLock);
     status_t scanVideoDirLocked(const std::string& dirname) REQUIRES(mLock);
     void scanDevicesLocked() REQUIRES(mLock);
-    status_t readNotifyLocked() REQUIRES(mLock);
+    base::Result<void> readNotifyLocked() REQUIRES(mLock);
+    void handleNotifyEventLocked(const inotify_event&) REQUIRES(mLock);
 
     Device* getDeviceByDescriptorLocked(const std::string& descriptor) const REQUIRES(mLock);
     Device* getDeviceLocked(int32_t deviceId) const REQUIRES(mLock);
diff --git a/services/inputflinger/reader/mapper/CursorInputMapper.cpp b/services/inputflinger/reader/mapper/CursorInputMapper.cpp
index a9a4c71..baa6007 100644
--- a/services/inputflinger/reader/mapper/CursorInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/CursorInputMapper.cpp
@@ -76,7 +76,7 @@
 void CursorInputMapper::populateDeviceInfo(InputDeviceInfo* info) {
     InputMapper::populateDeviceInfo(info);
 
-    if (mParameters.mode == Parameters::MODE_POINTER) {
+    if (mParameters.mode == Parameters::Mode::POINTER) {
         float minX, minY, maxX, maxY;
         if (mPointerController->getBounds(&minX, &minY, &maxX, &maxY)) {
             info->addMotionRange(AMOTION_EVENT_AXIS_X, mSource, minX, maxX, 0.0f, 0.0f, 0.0f);
@@ -131,12 +131,12 @@
 
         // Configure device mode.
         switch (mParameters.mode) {
-            case Parameters::MODE_POINTER_RELATIVE:
+            case Parameters::Mode::POINTER_RELATIVE:
                 // Should not happen during first time configuration.
                 ALOGE("Cannot start a device in MODE_POINTER_RELATIVE, starting in MODE_POINTER");
-                mParameters.mode = Parameters::MODE_POINTER;
+                mParameters.mode = Parameters::Mode::POINTER;
                 [[fallthrough]];
-            case Parameters::MODE_POINTER:
+            case Parameters::Mode::POINTER:
                 mSource = AINPUT_SOURCE_MOUSE;
                 mXPrecision = 1.0f;
                 mYPrecision = 1.0f;
@@ -144,7 +144,7 @@
                 mYScale = 1.0f;
                 mPointerController = getContext()->getPointerController(getDeviceId());
                 break;
-            case Parameters::MODE_NAVIGATION:
+            case Parameters::Mode::NAVIGATION:
                 mSource = AINPUT_SOURCE_TRACKBALL;
                 mXPrecision = TRACKBALL_MOVEMENT_THRESHOLD;
                 mYPrecision = TRACKBALL_MOVEMENT_THRESHOLD;
@@ -157,12 +157,13 @@
         mHWheelScale = 1.0f;
     }
 
-    const bool configurePointerCapture = (!changes && config->pointerCaptureRequest.enable) ||
-            (changes & InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    const bool configurePointerCapture = mParameters.mode != Parameters::Mode::NAVIGATION &&
+            ((!changes && config->pointerCaptureRequest.enable) ||
+             (changes & InputReaderConfiguration::CHANGE_POINTER_CAPTURE));
     if (configurePointerCapture) {
         if (config->pointerCaptureRequest.enable) {
-            if (mParameters.mode == Parameters::MODE_POINTER) {
-                mParameters.mode = Parameters::MODE_POINTER_RELATIVE;
+            if (mParameters.mode == Parameters::Mode::POINTER) {
+                mParameters.mode = Parameters::Mode::POINTER_RELATIVE;
                 mSource = AINPUT_SOURCE_MOUSE_RELATIVE;
                 // Keep PointerController around in order to preserve the pointer position.
                 mPointerController->fade(PointerControllerInterface::Transition::IMMEDIATE);
@@ -170,8 +171,8 @@
                 ALOGE("Cannot request pointer capture, device is not in MODE_POINTER");
             }
         } else {
-            if (mParameters.mode == Parameters::MODE_POINTER_RELATIVE) {
-                mParameters.mode = Parameters::MODE_POINTER;
+            if (mParameters.mode == Parameters::Mode::POINTER_RELATIVE) {
+                mParameters.mode = Parameters::Mode::POINTER;
                 mSource = AINPUT_SOURCE_MOUSE;
             } else {
                 ALOGE("Cannot release pointer capture, device is not in MODE_POINTER_RELATIVE");
@@ -186,8 +187,8 @@
 
     if (!changes || (changes & InputReaderConfiguration::CHANGE_POINTER_SPEED) ||
         configurePointerCapture) {
-        if (config->pointerCaptureRequest.enable) {
-            // Disable any acceleration or scaling when Pointer Capture is enabled.
+        if (mParameters.mode == Parameters::Mode::POINTER_RELATIVE) {
+            // Disable any acceleration or scaling for the pointer when Pointer Capture is enabled.
             mPointerVelocityControl.setParameters(FLAT_VELOCITY_CONTROL_PARAMS);
             mWheelXVelocityControl.setParameters(FLAT_VELOCITY_CONTROL_PARAMS);
             mWheelYVelocityControl.setParameters(FLAT_VELOCITY_CONTROL_PARAMS);
@@ -198,7 +199,8 @@
         }
     }
 
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
+    if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO) ||
+        configurePointerCapture) {
         mOrientation = DISPLAY_ORIENTATION_0;
         const bool isOrientedDevice =
                 (mParameters.orientationAware && mParameters.hasAssociatedDisplay);
@@ -207,8 +209,9 @@
         // anything if the device is already orientation-aware. If the device is not
         // orientation-aware, then we need to apply the inverse rotation of the display so that
         // when the display rotation is applied later as a part of the per-window transform, we
-        // get the expected screen coordinates.
-        if (!isOrientedDevice) {
+        // get the expected screen coordinates. When pointer capture is enabled, we do not apply any
+        // rotations and report values directly from the input device.
+        if (!isOrientedDevice && mParameters.mode != Parameters::Mode::POINTER_RELATIVE) {
             std::optional<DisplayViewport> internalViewport =
                     config->getDisplayViewportByType(ViewportType::INTERNAL);
             if (internalViewport) {
@@ -221,23 +224,22 @@
 }
 
 void CursorInputMapper::configureParameters() {
-    mParameters.mode = Parameters::MODE_POINTER;
-    String8 cursorModeString;
-    if (getDeviceContext().getConfiguration().tryGetProperty(String8("cursor.mode"),
-                                                             cursorModeString)) {
+    mParameters.mode = Parameters::Mode::POINTER;
+    std::string cursorModeString;
+    if (getDeviceContext().getConfiguration().tryGetProperty("cursor.mode", cursorModeString)) {
         if (cursorModeString == "navigation") {
-            mParameters.mode = Parameters::MODE_NAVIGATION;
+            mParameters.mode = Parameters::Mode::NAVIGATION;
         } else if (cursorModeString != "pointer" && cursorModeString != "default") {
-            ALOGW("Invalid value for cursor.mode: '%s'", cursorModeString.string());
+            ALOGW("Invalid value for cursor.mode: '%s'", cursorModeString.c_str());
         }
     }
 
     mParameters.orientationAware = false;
-    getDeviceContext().getConfiguration().tryGetProperty(String8("cursor.orientationAware"),
+    getDeviceContext().getConfiguration().tryGetProperty("cursor.orientationAware",
                                                          mParameters.orientationAware);
 
     mParameters.hasAssociatedDisplay = false;
-    if (mParameters.mode == Parameters::MODE_POINTER || mParameters.orientationAware) {
+    if (mParameters.mode == Parameters::Mode::POINTER || mParameters.orientationAware) {
         mParameters.hasAssociatedDisplay = true;
     }
 }
@@ -246,21 +248,7 @@
     dump += INDENT3 "Parameters:\n";
     dump += StringPrintf(INDENT4 "HasAssociatedDisplay: %s\n",
                          toString(mParameters.hasAssociatedDisplay));
-
-    switch (mParameters.mode) {
-        case Parameters::MODE_POINTER:
-            dump += INDENT4 "Mode: pointer\n";
-            break;
-        case Parameters::MODE_POINTER_RELATIVE:
-            dump += INDENT4 "Mode: relative pointer\n";
-            break;
-        case Parameters::MODE_NAVIGATION:
-            dump += INDENT4 "Mode: navigation\n";
-            break;
-        default:
-            ALOG_ASSERT(false);
-    }
-
+    dump += StringPrintf(INDENT4 "Mode: %s\n", ftl::enum_string(mParameters.mode).c_str());
     dump += StringPrintf(INDENT4 "OrientationAware: %s\n", toString(mParameters.orientationAware));
 }
 
@@ -486,7 +474,7 @@
 
 std::optional<int32_t> CursorInputMapper::getAssociatedDisplayId() {
     if (mParameters.hasAssociatedDisplay) {
-        if (mParameters.mode == Parameters::MODE_POINTER) {
+        if (mParameters.mode == Parameters::Mode::POINTER) {
             return std::make_optional(mPointerController->getDisplayId());
         } else {
             // If the device is orientationAware and not a mouse,
diff --git a/services/inputflinger/reader/mapper/CursorInputMapper.h b/services/inputflinger/reader/mapper/CursorInputMapper.h
index c84c6c4..75aeffb 100644
--- a/services/inputflinger/reader/mapper/CursorInputMapper.h
+++ b/services/inputflinger/reader/mapper/CursorInputMapper.h
@@ -74,10 +74,17 @@
 
     // Immutable configuration parameters.
     struct Parameters {
-        enum Mode {
-            MODE_POINTER,
-            MODE_POINTER_RELATIVE,
-            MODE_NAVIGATION,
+        enum class Mode {
+            // In POINTER mode, the device is a mouse that controls the mouse cursor on the screen,
+            // reporting absolute screen locations using SOURCE_MOUSE.
+            POINTER,
+            // A mouse device in POINTER mode switches to the POINTER_RELATIVE mode when Pointer
+            // Capture is enabled, and reports relative values only using SOURCE_MOUSE_RELATIVE.
+            POINTER_RELATIVE,
+            // A device in NAVIGATION mode emits relative values using SOURCE_TRACKBALL.
+            NAVIGATION,
+
+            ftl_last = NAVIGATION,
         };
 
         Mode mode;
diff --git a/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp b/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
index 8eb870f..6a406d2 100644
--- a/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
@@ -160,7 +160,7 @@
 
 static void mapStemKey(int32_t keyCode, const PropertyMap& config, char const* property) {
     int32_t mapped = 0;
-    if (config.tryGetProperty(String8(property), mapped) && mapped > 0) {
+    if (config.tryGetProperty(property, mapped) && mapped > 0) {
         for (size_t i = 0; i < stemKeyRotationMapSize; i++) {
             if (stemKeyRotationMap[i][0] == keyCode) {
                 stemKeyRotationMap[i][1] = mapped;
@@ -173,7 +173,7 @@
 void KeyboardInputMapper::configureParameters() {
     mParameters.orientationAware = false;
     const PropertyMap& config = getDeviceContext().getConfiguration();
-    config.tryGetProperty(String8("keyboard.orientationAware"), mParameters.orientationAware);
+    config.tryGetProperty("keyboard.orientationAware", mParameters.orientationAware);
 
     if (mParameters.orientationAware) {
         mapStemKey(AKEYCODE_STEM_PRIMARY, config, "keyboard.rotated.stem_primary");
@@ -183,10 +183,10 @@
     }
 
     mParameters.handlesKeyRepeat = false;
-    config.tryGetProperty(String8("keyboard.handlesKeyRepeat"), mParameters.handlesKeyRepeat);
+    config.tryGetProperty("keyboard.handlesKeyRepeat", mParameters.handlesKeyRepeat);
 
     mParameters.doNotWakeByDefault = false;
-    config.tryGetProperty(String8("keyboard.doNotWakeByDefault"), mParameters.doNotWakeByDefault);
+    config.tryGetProperty("keyboard.doNotWakeByDefault", mParameters.doNotWakeByDefault);
 }
 
 void KeyboardInputMapper::dumpParameters(std::string& dump) {
diff --git a/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.cpp b/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.cpp
index eca25f6..05973f7 100644
--- a/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/RotaryEncoderInputMapper.cpp
@@ -40,10 +40,10 @@
 
     if (mRotaryEncoderScrollAccumulator.haveRelativeVWheel()) {
         float res = 0.0f;
-        if (!getDeviceContext().getConfiguration().tryGetProperty(String8("device.res"), res)) {
+        if (!getDeviceContext().getConfiguration().tryGetProperty("device.res", res)) {
             ALOGW("Rotary Encoder device configuration file didn't specify resolution!\n");
         }
-        if (!getDeviceContext().getConfiguration().tryGetProperty(String8("device.scalingFactor"),
+        if (!getDeviceContext().getConfiguration().tryGetProperty("device.scalingFactor",
                                                                   mScalingFactor)) {
             ALOGW("Rotary Encoder device configuration file didn't specify scaling factor,"
                   "default to 1.0!\n");
diff --git a/services/inputflinger/reader/mapper/SensorInputMapper.cpp b/services/inputflinger/reader/mapper/SensorInputMapper.cpp
index b01c2bc..573f99c 100644
--- a/services/inputflinger/reader/mapper/SensorInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/SensorInputMapper.cpp
@@ -64,7 +64,7 @@
 template <typename T>
 bool SensorInputMapper::tryGetProperty(std::string keyName, T& outValue) {
     const auto& config = getDeviceContext().getConfiguration();
-    return config.tryGetProperty(String8(keyName.c_str()), outValue);
+    return config.tryGetProperty(keyName, outValue);
 }
 
 void SensorInputMapper::parseSensorConfiguration(InputDeviceSensorType sensorType, int32_t absCode,
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index d6b72ed..2f3337b 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -415,15 +415,15 @@
             ? Parameters::GestureMode::SINGLE_TOUCH
             : Parameters::GestureMode::MULTI_TOUCH;
 
-    String8 gestureModeString;
-    if (getDeviceContext().getConfiguration().tryGetProperty(String8("touch.gestureMode"),
+    std::string gestureModeString;
+    if (getDeviceContext().getConfiguration().tryGetProperty("touch.gestureMode",
                                                              gestureModeString)) {
         if (gestureModeString == "single-touch") {
             mParameters.gestureMode = Parameters::GestureMode::SINGLE_TOUCH;
         } else if (gestureModeString == "multi-touch") {
             mParameters.gestureMode = Parameters::GestureMode::MULTI_TOUCH;
         } else if (gestureModeString != "default") {
-            ALOGW("Invalid value for touch.gestureMode: '%s'", gestureModeString.string());
+            ALOGW("Invalid value for touch.gestureMode: '%s'", gestureModeString.c_str());
         }
     }
 
@@ -445,8 +445,8 @@
 
     mParameters.hasButtonUnderPad = getDeviceContext().hasInputProperty(INPUT_PROP_BUTTONPAD);
 
-    String8 deviceTypeString;
-    if (getDeviceContext().getConfiguration().tryGetProperty(String8("touch.deviceType"),
+    std::string deviceTypeString;
+    if (getDeviceContext().getConfiguration().tryGetProperty("touch.deviceType",
                                                              deviceTypeString)) {
         if (deviceTypeString == "touchScreen") {
             mParameters.deviceType = Parameters::DeviceType::TOUCH_SCREEN;
@@ -457,17 +457,17 @@
         } else if (deviceTypeString == "pointer") {
             mParameters.deviceType = Parameters::DeviceType::POINTER;
         } else if (deviceTypeString != "default") {
-            ALOGW("Invalid value for touch.deviceType: '%s'", deviceTypeString.string());
+            ALOGW("Invalid value for touch.deviceType: '%s'", deviceTypeString.c_str());
         }
     }
 
     mParameters.orientationAware = mParameters.deviceType == Parameters::DeviceType::TOUCH_SCREEN;
-    getDeviceContext().getConfiguration().tryGetProperty(String8("touch.orientationAware"),
+    getDeviceContext().getConfiguration().tryGetProperty("touch.orientationAware",
                                                          mParameters.orientationAware);
 
     mParameters.orientation = Parameters::Orientation::ORIENTATION_0;
-    String8 orientationString;
-    if (getDeviceContext().getConfiguration().tryGetProperty(String8("touch.orientation"),
+    std::string orientationString;
+    if (getDeviceContext().getConfiguration().tryGetProperty("touch.orientation",
                                                              orientationString)) {
         if (mParameters.deviceType != Parameters::DeviceType::TOUCH_SCREEN) {
             ALOGW("The configuration 'touch.orientation' is only supported for touchscreens.");
@@ -478,7 +478,7 @@
         } else if (orientationString == "ORIENTATION_270") {
             mParameters.orientation = Parameters::Orientation::ORIENTATION_270;
         } else if (orientationString != "ORIENTATION_0") {
-            ALOGW("Invalid value for touch.orientation: '%s'", orientationString.string());
+            ALOGW("Invalid value for touch.orientation: '%s'", orientationString.c_str());
         }
     }
 
@@ -490,8 +490,8 @@
         mParameters.hasAssociatedDisplay = true;
         if (mParameters.deviceType == Parameters::DeviceType::TOUCH_SCREEN) {
             mParameters.associatedDisplayIsExternal = getDeviceContext().isExternal();
-            String8 uniqueDisplayId;
-            getDeviceContext().getConfiguration().tryGetProperty(String8("touch.displayId"),
+            std::string uniqueDisplayId;
+            getDeviceContext().getConfiguration().tryGetProperty("touch.displayId",
                                                                  uniqueDisplayId);
             mParameters.uniqueDisplayId = uniqueDisplayId.c_str();
         }
@@ -504,7 +504,7 @@
     // Normally we don't do this for internal touch screens to prevent them from waking
     // up in your pocket but you can enable it using the input device configuration.
     mParameters.wake = getDeviceContext().isExternal();
-    getDeviceContext().getConfiguration().tryGetProperty(String8("touch.wake"), mParameters.wake);
+    getDeviceContext().getConfiguration().tryGetProperty("touch.wake", mParameters.wake);
 }
 
 void TouchInputMapper::dumpParameters(std::string& dump) {
@@ -1053,6 +1053,10 @@
             mPointerController->fade(PointerControllerInterface::Transition::IMMEDIATE);
         }
     } else {
+        if (mPointerController != nullptr && mDeviceMode == DeviceMode::DIRECT &&
+            !mConfig.showTouches) {
+            mPointerController->clearSpots();
+        }
         mPointerController.reset();
     }
 
@@ -1188,8 +1192,8 @@
 
     // Size
     out.sizeCalibration = Calibration::SizeCalibration::DEFAULT;
-    String8 sizeCalibrationString;
-    if (in.tryGetProperty(String8("touch.size.calibration"), sizeCalibrationString)) {
+    std::string sizeCalibrationString;
+    if (in.tryGetProperty("touch.size.calibration", sizeCalibrationString)) {
         if (sizeCalibrationString == "none") {
             out.sizeCalibration = Calibration::SizeCalibration::NONE;
         } else if (sizeCalibrationString == "geometric") {
@@ -1201,18 +1205,18 @@
         } else if (sizeCalibrationString == "area") {
             out.sizeCalibration = Calibration::SizeCalibration::AREA;
         } else if (sizeCalibrationString != "default") {
-            ALOGW("Invalid value for touch.size.calibration: '%s'", sizeCalibrationString.string());
+            ALOGW("Invalid value for touch.size.calibration: '%s'", sizeCalibrationString.c_str());
         }
     }
 
-    out.haveSizeScale = in.tryGetProperty(String8("touch.size.scale"), out.sizeScale);
-    out.haveSizeBias = in.tryGetProperty(String8("touch.size.bias"), out.sizeBias);
-    out.haveSizeIsSummed = in.tryGetProperty(String8("touch.size.isSummed"), out.sizeIsSummed);
+    out.haveSizeScale = in.tryGetProperty("touch.size.scale", out.sizeScale);
+    out.haveSizeBias = in.tryGetProperty("touch.size.bias", out.sizeBias);
+    out.haveSizeIsSummed = in.tryGetProperty("touch.size.isSummed", out.sizeIsSummed);
 
     // Pressure
     out.pressureCalibration = Calibration::PressureCalibration::DEFAULT;
-    String8 pressureCalibrationString;
-    if (in.tryGetProperty(String8("touch.pressure.calibration"), pressureCalibrationString)) {
+    std::string pressureCalibrationString;
+    if (in.tryGetProperty("touch.pressure.calibration", pressureCalibrationString)) {
         if (pressureCalibrationString == "none") {
             out.pressureCalibration = Calibration::PressureCalibration::NONE;
         } else if (pressureCalibrationString == "physical") {
@@ -1221,16 +1225,16 @@
             out.pressureCalibration = Calibration::PressureCalibration::AMPLITUDE;
         } else if (pressureCalibrationString != "default") {
             ALOGW("Invalid value for touch.pressure.calibration: '%s'",
-                  pressureCalibrationString.string());
+                  pressureCalibrationString.c_str());
         }
     }
 
-    out.havePressureScale = in.tryGetProperty(String8("touch.pressure.scale"), out.pressureScale);
+    out.havePressureScale = in.tryGetProperty("touch.pressure.scale", out.pressureScale);
 
     // Orientation
     out.orientationCalibration = Calibration::OrientationCalibration::DEFAULT;
-    String8 orientationCalibrationString;
-    if (in.tryGetProperty(String8("touch.orientation.calibration"), orientationCalibrationString)) {
+    std::string orientationCalibrationString;
+    if (in.tryGetProperty("touch.orientation.calibration", orientationCalibrationString)) {
         if (orientationCalibrationString == "none") {
             out.orientationCalibration = Calibration::OrientationCalibration::NONE;
         } else if (orientationCalibrationString == "interpolated") {
@@ -1239,36 +1243,36 @@
             out.orientationCalibration = Calibration::OrientationCalibration::VECTOR;
         } else if (orientationCalibrationString != "default") {
             ALOGW("Invalid value for touch.orientation.calibration: '%s'",
-                  orientationCalibrationString.string());
+                  orientationCalibrationString.c_str());
         }
     }
 
     // Distance
     out.distanceCalibration = Calibration::DistanceCalibration::DEFAULT;
-    String8 distanceCalibrationString;
-    if (in.tryGetProperty(String8("touch.distance.calibration"), distanceCalibrationString)) {
+    std::string distanceCalibrationString;
+    if (in.tryGetProperty("touch.distance.calibration", distanceCalibrationString)) {
         if (distanceCalibrationString == "none") {
             out.distanceCalibration = Calibration::DistanceCalibration::NONE;
         } else if (distanceCalibrationString == "scaled") {
             out.distanceCalibration = Calibration::DistanceCalibration::SCALED;
         } else if (distanceCalibrationString != "default") {
             ALOGW("Invalid value for touch.distance.calibration: '%s'",
-                  distanceCalibrationString.string());
+                  distanceCalibrationString.c_str());
         }
     }
 
-    out.haveDistanceScale = in.tryGetProperty(String8("touch.distance.scale"), out.distanceScale);
+    out.haveDistanceScale = in.tryGetProperty("touch.distance.scale", out.distanceScale);
 
     out.coverageCalibration = Calibration::CoverageCalibration::DEFAULT;
-    String8 coverageCalibrationString;
-    if (in.tryGetProperty(String8("touch.coverage.calibration"), coverageCalibrationString)) {
+    std::string coverageCalibrationString;
+    if (in.tryGetProperty("touch.coverage.calibration", coverageCalibrationString)) {
         if (coverageCalibrationString == "none") {
             out.coverageCalibration = Calibration::CoverageCalibration::NONE;
         } else if (coverageCalibrationString == "box") {
             out.coverageCalibration = Calibration::CoverageCalibration::BOX;
         } else if (coverageCalibrationString != "default") {
             ALOGW("Invalid value for touch.coverage.calibration: '%s'",
-                  coverageCalibrationString.string());
+                  coverageCalibrationString.c_str());
         }
     }
 }
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index 8af7cc3..70fd25c 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -58,6 +58,8 @@
         AMOTION_EVENT_ACTION_POINTER_DOWN | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
 static constexpr int32_t POINTER_2_DOWN =
         AMOTION_EVENT_ACTION_POINTER_DOWN | (2 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+static constexpr int32_t POINTER_3_DOWN =
+        AMOTION_EVENT_ACTION_POINTER_DOWN | (3 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
 static constexpr int32_t POINTER_1_UP =
         AMOTION_EVENT_ACTION_POINTER_UP | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
 
@@ -1941,6 +1943,77 @@
     window2->consumeMotionDown();
 }
 
+/**
+ * When splitting touch events the downTime should be adjusted such that the downTime corresponds
+ * to the event time of the first ACTION_DOWN sent to the particular window.
+ */
+TEST_F(InputDispatcherTest, SplitTouchesSendCorrectActionDownTime) {
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window1 =
+            new FakeWindowHandle(application, mDispatcher, "Window1", DISPLAY_ID);
+    window1->setTouchableRegion(Region{{0, 0, 100, 100}});
+    sp<FakeWindowHandle> window2 =
+            new FakeWindowHandle(application, mDispatcher, "Window2", DISPLAY_ID);
+    window2->setTouchableRegion(Region{{100, 0, 200, 100}});
+
+    mDispatcher->setInputWindows({{DISPLAY_ID, {window1, window2}}});
+
+    NotifyMotionArgs args;
+    // Touch down on the first window
+    mDispatcher->notifyMotion(&(args = generateTouchArgs(AMOTION_EVENT_ACTION_DOWN, {{50, 50}})));
+
+    mDispatcher->waitForIdle();
+    InputEvent* inputEvent1 = window1->consume();
+    window2->assertNoEvents();
+    MotionEvent& motionEvent1 = static_cast<MotionEvent&>(*inputEvent1);
+    nsecs_t downTimeForWindow1 = motionEvent1.getDownTime();
+    ASSERT_EQ(motionEvent1.getDownTime(), motionEvent1.getEventTime());
+
+    // Now touch down on the window with another pointer
+    mDispatcher->notifyMotion(&(args = generateTouchArgs(POINTER_1_DOWN, {{50, 50}, {150, 50}})));
+    mDispatcher->waitForIdle();
+    InputEvent* inputEvent2 = window2->consume();
+    MotionEvent& motionEvent2 = static_cast<MotionEvent&>(*inputEvent2);
+    nsecs_t downTimeForWindow2 = motionEvent2.getDownTime();
+    ASSERT_NE(downTimeForWindow1, downTimeForWindow2);
+    ASSERT_EQ(motionEvent2.getDownTime(), motionEvent2.getEventTime());
+
+    // Now move the pointer on the second window
+    mDispatcher->notifyMotion(
+            &(args = generateTouchArgs(AMOTION_EVENT_ACTION_MOVE, {{50, 50}, {151, 51}})));
+    mDispatcher->waitForIdle();
+    InputEvent* inputEvent3 = window2->consume();
+    MotionEvent& motionEvent3 = static_cast<MotionEvent&>(*inputEvent3);
+    ASSERT_EQ(motionEvent3.getDownTime(), downTimeForWindow2);
+
+    // Now add new touch down on the second window
+    mDispatcher->notifyMotion(
+            &(args = generateTouchArgs(POINTER_2_DOWN, {{50, 50}, {151, 51}, {150, 50}})));
+    mDispatcher->waitForIdle();
+    InputEvent* inputEvent4 = window2->consume();
+    MotionEvent& motionEvent4 = static_cast<MotionEvent&>(*inputEvent4);
+    ASSERT_EQ(motionEvent4.getDownTime(), downTimeForWindow2);
+
+    // TODO(b/232530217): do not send the unnecessary MOVE event and delete the next line
+    window1->consumeMotionMove();
+    window1->assertNoEvents();
+
+    // Now move the pointer on the first window
+    mDispatcher->notifyMotion(
+            &(args = generateTouchArgs(AMOTION_EVENT_ACTION_MOVE, {{51, 51}, {151, 51}})));
+    mDispatcher->waitForIdle();
+    InputEvent* inputEvent5 = window1->consume();
+    MotionEvent& motionEvent5 = static_cast<MotionEvent&>(*inputEvent5);
+    ASSERT_EQ(motionEvent5.getDownTime(), downTimeForWindow1);
+
+    mDispatcher->notifyMotion(&(
+            args = generateTouchArgs(POINTER_3_DOWN, {{51, 51}, {151, 51}, {150, 50}, {50, 50}})));
+    mDispatcher->waitForIdle();
+    InputEvent* inputEvent6 = window1->consume();
+    MotionEvent& motionEvent6 = static_cast<MotionEvent&>(*inputEvent6);
+    ASSERT_EQ(motionEvent6.getDownTime(), downTimeForWindow1);
+}
+
 TEST_F(InputDispatcherTest, HoverMoveEnterMouseClickAndHoverMoveExit) {
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> windowLeft =
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 1380112..0fdffdf 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -219,7 +219,7 @@
         mSpotsByDisplay[displayId] = newSpots;
     }
 
-    void clearSpots() override {}
+    void clearSpots() override { mSpotsByDisplay.clear(); }
 
     std::map<int32_t, std::vector<int32_t>> mSpotsByDisplay;
 };
@@ -546,7 +546,7 @@
         enqueueEvent(ARBITRARY_TIME, READ_TIME, 0, EventHubInterface::FINISHED_DEVICE_SCAN, 0, 0);
     }
 
-    void addConfigurationProperty(int32_t deviceId, const String8& key, const String8& value) {
+    void addConfigurationProperty(int32_t deviceId, const char* key, const char* value) {
         Device* device = getDevice(deviceId);
         device->configuration.addProperty(key, value);
     }
@@ -2731,7 +2731,7 @@
 
 TEST_F(InputDeviceTest, WhenMappersAreRegistered_DeviceIsNotIgnoredAndForwardsRequestsToMappers) {
     // Configuration.
-    mFakeEventHub->addConfigurationProperty(EVENTHUB_ID, String8("key"), String8("value"));
+    mFakeEventHub->addConfigurationProperty(EVENTHUB_ID, "key", "value");
 
     FakeInputMapper& mapper1 =
             mDevice->addMapper<FakeInputMapper>(EVENTHUB_ID, AINPUT_SOURCE_KEYBOARD);
@@ -2752,10 +2752,10 @@
     InputReaderConfiguration config;
     mDevice->configure(ARBITRARY_TIME, &config, 0);
 
-    String8 propertyValue;
-    ASSERT_TRUE(mDevice->getConfiguration().tryGetProperty(String8("key"), propertyValue))
+    std::string propertyValue;
+    ASSERT_TRUE(mDevice->getConfiguration().tryGetProperty("key", propertyValue))
             << "Device should have read configuration during configuration phase.";
-    ASSERT_STREQ("value", propertyValue.string());
+    ASSERT_EQ("value", propertyValue);
 
     ASSERT_NO_FATAL_FAILURE(mapper1.assertConfigureWasCalled());
     ASSERT_NO_FATAL_FAILURE(mapper2.assertConfigureWasCalled());
@@ -2953,7 +2953,7 @@
     }
 
     void addConfigurationProperty(const char* key, const char* value) {
-        mFakeEventHub->addConfigurationProperty(EVENTHUB_ID, String8(key), String8(value));
+        mFakeEventHub->addConfigurationProperty(EVENTHUB_ID, key, value);
     }
 
     void configureDevice(uint32_t changes) {
@@ -4971,6 +4971,48 @@
     ASSERT_EQ(20, args.pointerCoords[0].getY());
 }
 
+TEST_F(CursorInputMapperTest, PointerCaptureDisablesOrientationChanges) {
+    addConfigurationProperty("cursor.mode", "pointer");
+    CursorInputMapper& mapper = addMapperAndConfigure<CursorInputMapper>();
+
+    NotifyDeviceResetArgs resetArgs;
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
+    ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
+    ASSERT_EQ(DEVICE_ID, resetArgs.deviceId);
+
+    // Ensure the display is rotated.
+    prepareDisplay(DISPLAY_ORIENTATION_90);
+
+    NotifyMotionArgs args;
+
+    // Verify that the coordinates are rotated.
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_X, 10);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_Y, 20);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_SYN, SYN_REPORT, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
+    ASSERT_EQ(AINPUT_SOURCE_MOUSE, args.source);
+    ASSERT_EQ(AMOTION_EVENT_ACTION_HOVER_MOVE, args.action);
+    ASSERT_EQ(-20, args.pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X));
+    ASSERT_EQ(10, args.pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y));
+
+    // Enable Pointer Capture.
+    mFakePolicy->setPointerCapture(true);
+    configureDevice(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    NotifyPointerCaptureChangedArgs captureArgs;
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyCaptureWasCalled(&captureArgs));
+    ASSERT_TRUE(captureArgs.request.enable);
+
+    // Move and verify rotation is not applied.
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_X, 10);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_Y, 20);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_SYN, SYN_REPORT, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
+    ASSERT_EQ(AINPUT_SOURCE_MOUSE_RELATIVE, args.source);
+    ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, args.action);
+    ASSERT_EQ(10, args.pointerCoords[0].getX());
+    ASSERT_EQ(20, args.pointerCoords[0].getY());
+}
+
 TEST_F(CursorInputMapperTest, Process_ShouldHandleDisplayId) {
     CursorInputMapper& mapper = addMapperAndConfigure<CursorInputMapper>();
 
@@ -8580,7 +8622,8 @@
 
     // Default device will reconfigure above, need additional reconfiguration for another device.
     device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
-                       InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+                       InputReaderConfiguration::CHANGE_DISPLAY_INFO |
+                               InputReaderConfiguration::CHANGE_SHOW_TOUCHES);
 
     // Two fingers down at default display.
     int32_t x1 = 100, y1 = 125, x2 = 300, y2 = 500;
@@ -8607,6 +8650,13 @@
     iter = fakePointerController->getSpots().find(SECONDARY_DISPLAY_ID);
     ASSERT_TRUE(iter != fakePointerController->getSpots().end());
     ASSERT_EQ(size_t(2), iter->second.size());
+
+    // Disable the show touches configuration and ensure the spots are cleared.
+    mFakePolicy->setShowTouches(false);
+    device2->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                       InputReaderConfiguration::CHANGE_SHOW_TOUCHES);
+
+    ASSERT_TRUE(fakePointerController->getSpots().empty());
 }
 
 TEST_F(MultiTouchInputMapperTest, VideoFrames_ReceivedByListener) {
diff --git a/services/powermanager/WorkSource.cpp b/services/powermanager/WorkSource.cpp
index 1006a06..64a5499 100644
--- a/services/powermanager/WorkSource.cpp
+++ b/services/powermanager/WorkSource.cpp
@@ -28,9 +28,16 @@
         return BAD_VALUE;
     }
     int32_t num;
+    int32_t workChainCount;
     status_t ret = parcel->readInt32(&num)
                 ?: parcel->readInt32Vector(&mUids)
-                ?: parcel->readString16Vector(&mNames);
+                ?: parcel->readString16Vector(&mNames)
+                ?: parcel->readInt32(&workChainCount);
+
+    if (ret == OK && workChainCount > 0) {
+        // We don't yet support WorkChains in native WorkSources.
+        return BAD_VALUE;
+    }
 
     return ret;
 }
@@ -43,7 +50,8 @@
 
     return parcel->writeInt32(mUids.size())
         ?: parcel->writeInt32Vector(mUids)
-        ?: parcel->writeString16Vector(mNames);
+        ?: parcel->writeString16Vector(mNames)
+        ?: parcel->writeInt32(-1);
 }
 
 } // namespace android::os
diff --git a/services/powermanager/tests/Android.bp b/services/powermanager/tests/Android.bp
index 2d1558a..962784c 100644
--- a/services/powermanager/tests/Android.bp
+++ b/services/powermanager/tests/Android.bp
@@ -31,6 +31,7 @@
         "PowerHalWrapperAidlTest.cpp",
         "PowerHalWrapperHidlV1_0Test.cpp",
         "PowerHalWrapperHidlV1_1Test.cpp",
+        "WorkSourceTest.cpp",
     ],
     cflags: [
         "-Wall",
diff --git a/services/powermanager/tests/WorkSourceTest.cpp b/services/powermanager/tests/WorkSourceTest.cpp
new file mode 100644
index 0000000..bb9164a
--- /dev/null
+++ b/services/powermanager/tests/WorkSourceTest.cpp
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <optional>
+#define LOG_TAG "PowerHalLoaderTest"
+
+#include <android-base/logging.h>
+#include <android/WorkSource.h>
+#include <binder/Parcel.h>
+#include <gtest/gtest.h>
+
+#include <future>
+
+using namespace android;
+using namespace testing;
+
+TEST(WorkSourceTest, Parcel) {
+    std::vector<int32_t> uids = {1, 2};
+    using Names = std::vector<std::optional<String16>>;
+    std::optional<Names> names = std::make_optional<Names>({std::make_optional(String16("name"))});
+    os::WorkSource ws{uids, names};
+
+    Parcel p;
+    ws.writeToParcel(&p);
+    p.setDataPosition(0);
+
+    os::WorkSource otherWs;
+    otherWs.readFromParcel(&p);
+
+    EXPECT_EQ(ws, otherWs);
+    EXPECT_EQ(uids, otherWs.getUids());
+    EXPECT_EQ(names, otherWs.getNames());
+}
diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index 1ddf2de..eb17995 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -142,7 +142,6 @@
     srcs: [
         "BackgroundExecutor.cpp",
         "BufferLayer.cpp",
-        "BufferLayerConsumer.cpp",
         "BufferStateLayer.cpp",
         "ClientCache.cpp",
         "Client.cpp",
@@ -168,10 +167,8 @@
         "WindowInfosListenerInvoker.cpp",
         "Layer.cpp",
         "LayerProtoHelper.cpp",
-        "LayerRejecter.cpp",
         "LayerRenderArea.cpp",
         "LayerVector.cpp",
-        "MonitoredProducer.cpp",
         "NativeWindowSurface.cpp",
         "RefreshRateOverlay.cpp",
         "RegionSamplingThread.cpp",
@@ -279,7 +276,7 @@
         "liblog",
     ],
     static_libs: [
-        "SurfaceFlingerProperties",
+        "libSurfaceFlingerProperties",
     ],
     export_shared_lib_headers: [
         "android.hardware.graphics.common@1.2",
@@ -287,6 +284,6 @@
         "libui",
     ],
     export_static_lib_headers: [
-        "SurfaceFlingerProperties",
+        "libSurfaceFlingerProperties",
     ],
 }
diff --git a/services/surfaceflinger/BufferLayer.cpp b/services/surfaceflinger/BufferLayer.cpp
index fb15f1d..5d7d293 100644
--- a/services/surfaceflinger/BufferLayer.cpp
+++ b/services/surfaceflinger/BufferLayer.cpp
@@ -53,7 +53,6 @@
 #include "Colorizer.h"
 #include "DisplayDevice.h"
 #include "FrameTracer/FrameTracer.h"
-#include "LayerRejecter.h"
 #include "TimeStats/TimeStats.h"
 
 namespace android {
diff --git a/services/surfaceflinger/BufferLayer.h b/services/surfaceflinger/BufferLayer.h
index 3bb0fb3..7cc67a2 100644
--- a/services/surfaceflinger/BufferLayer.h
+++ b/services/surfaceflinger/BufferLayer.h
@@ -34,14 +34,12 @@
 #include <utils/String8.h>
 #include <utils/Timers.h>
 
-#include "BufferLayerConsumer.h"
 #include "Client.h"
 #include "DisplayHardware/HWComposer.h"
 #include "FrameTimeline.h"
 #include "FrameTracker.h"
 #include "Layer.h"
 #include "LayerVector.h"
-#include "MonitoredProducer.h"
 #include "SurfaceFlinger.h"
 
 namespace android {
diff --git a/services/surfaceflinger/BufferLayerConsumer.cpp b/services/surfaceflinger/BufferLayerConsumer.cpp
deleted file mode 100644
index 7361a4f..0000000
--- a/services/surfaceflinger/BufferLayerConsumer.cpp
+++ /dev/null
@@ -1,500 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wconversion"
-
-#undef LOG_TAG
-#define LOG_TAG "BufferLayerConsumer"
-#define ATRACE_TAG ATRACE_TAG_GRAPHICS
-//#define LOG_NDEBUG 0
-
-#include "BufferLayerConsumer.h"
-#include "Layer.h"
-#include "Scheduler/VsyncController.h"
-
-#include <inttypes.h>
-
-#include <cutils/compiler.h>
-
-#include <hardware/hardware.h>
-
-#include <math/mat4.h>
-
-#include <gui/BufferItem.h>
-#include <gui/GLConsumer.h>
-#include <gui/ISurfaceComposer.h>
-#include <gui/SurfaceComposerClient.h>
-#include <private/gui/ComposerService.h>
-#include <renderengine/RenderEngine.h>
-#include <renderengine/impl/ExternalTexture.h>
-#include <utils/Log.h>
-#include <utils/String8.h>
-#include <utils/Trace.h>
-
-namespace android {
-
-// Macros for including the BufferLayerConsumer name in log messages
-#define BLC_LOGV(x, ...) ALOGV("[%s] " x, mName.string(), ##__VA_ARGS__)
-#define BLC_LOGD(x, ...) ALOGD("[%s] " x, mName.string(), ##__VA_ARGS__)
-//#define BLC_LOGI(x, ...) ALOGI("[%s] " x, mName.string(), ##__VA_ARGS__)
-#define BLC_LOGW(x, ...) ALOGW("[%s] " x, mName.string(), ##__VA_ARGS__)
-#define BLC_LOGE(x, ...) ALOGE("[%s] " x, mName.string(), ##__VA_ARGS__)
-
-static const mat4 mtxIdentity;
-
-BufferLayerConsumer::BufferLayerConsumer(const sp<IGraphicBufferConsumer>& bq,
-                                         renderengine::RenderEngine& engine, uint32_t tex,
-                                         Layer* layer)
-      : ConsumerBase(bq, false),
-        mCurrentCrop(Rect::EMPTY_RECT),
-        mCurrentTransform(0),
-        mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
-        mCurrentFence(Fence::NO_FENCE),
-        mCurrentTimestamp(0),
-        mCurrentDataSpace(ui::Dataspace::UNKNOWN),
-        mCurrentFrameNumber(0),
-        mCurrentTransformToDisplayInverse(false),
-        mCurrentSurfaceDamage(),
-        mCurrentApi(0),
-        mDefaultWidth(1),
-        mDefaultHeight(1),
-        mFilteringEnabled(true),
-        mRE(engine),
-        mTexName(tex),
-        mLayer(layer),
-        mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT) {
-    BLC_LOGV("BufferLayerConsumer");
-
-    memcpy(mCurrentTransformMatrix, mtxIdentity.asArray(), sizeof(mCurrentTransformMatrix));
-
-    mConsumer->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
-}
-
-status_t BufferLayerConsumer::setDefaultBufferSize(uint32_t w, uint32_t h) {
-    Mutex::Autolock lock(mMutex);
-    if (mAbandoned) {
-        BLC_LOGE("setDefaultBufferSize: BufferLayerConsumer is abandoned!");
-        return NO_INIT;
-    }
-    mDefaultWidth = w;
-    mDefaultHeight = h;
-    return mConsumer->setDefaultBufferSize(w, h);
-}
-
-void BufferLayerConsumer::setContentsChangedListener(const wp<ContentsChangedListener>& listener) {
-    setFrameAvailableListener(listener);
-    Mutex::Autolock lock(mMutex);
-    mContentsChangedListener = listener;
-}
-
-status_t BufferLayerConsumer::updateTexImage(BufferRejecter* rejecter, nsecs_t expectedPresentTime,
-                                             bool* autoRefresh, bool* queuedBuffer,
-                                             uint64_t maxFrameNumber) {
-    ATRACE_CALL();
-    BLC_LOGV("updateTexImage");
-    Mutex::Autolock lock(mMutex);
-
-    if (mAbandoned) {
-        BLC_LOGE("updateTexImage: BufferLayerConsumer is abandoned!");
-        return NO_INIT;
-    }
-
-    BufferItem item;
-
-    // Acquire the next buffer.
-    // In asynchronous mode the list is guaranteed to be one buffer
-    // deep, while in synchronous mode we use the oldest buffer.
-    status_t err = acquireBufferLocked(&item, expectedPresentTime, maxFrameNumber);
-    if (err != NO_ERROR) {
-        if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
-            err = NO_ERROR;
-        } else if (err == BufferQueue::PRESENT_LATER) {
-            // return the error, without logging
-        } else {
-            BLC_LOGE("updateTexImage: acquire failed: %s (%d)", strerror(-err), err);
-        }
-        return err;
-    }
-
-    if (autoRefresh) {
-        *autoRefresh = item.mAutoRefresh;
-    }
-
-    if (queuedBuffer) {
-        *queuedBuffer = item.mQueuedBuffer;
-    }
-
-    // We call the rejecter here, in case the caller has a reason to
-    // not accept this buffer.  This is used by SurfaceFlinger to
-    // reject buffers which have the wrong size
-    int slot = item.mSlot;
-    if (rejecter && rejecter->reject(mSlots[slot].mGraphicBuffer, item)) {
-        releaseBufferLocked(slot, mSlots[slot].mGraphicBuffer);
-        return BUFFER_REJECTED;
-    }
-
-    // Release the previous buffer.
-    err = updateAndReleaseLocked(item, &mPendingRelease);
-    if (err != NO_ERROR) {
-        return err;
-    }
-    return err;
-}
-
-void BufferLayerConsumer::setReleaseFence(const sp<Fence>& fence) {
-    if (!fence->isValid()) {
-        return;
-    }
-
-    auto slot = mPendingRelease.isPending ? mPendingRelease.currentTexture : mCurrentTexture;
-    if (slot == BufferQueue::INVALID_BUFFER_SLOT) {
-        return;
-    }
-
-    auto buffer = mPendingRelease.isPending ? mPendingRelease.graphicBuffer
-                                            : mCurrentTextureBuffer->getBuffer();
-    auto err = addReleaseFence(slot, buffer, fence);
-    if (err != OK) {
-        BLC_LOGE("setReleaseFence: failed to add the fence: %s (%d)", strerror(-err), err);
-    }
-}
-
-bool BufferLayerConsumer::releasePendingBuffer() {
-    if (!mPendingRelease.isPending) {
-        BLC_LOGV("Pending buffer already released");
-        return false;
-    }
-    BLC_LOGV("Releasing pending buffer");
-    Mutex::Autolock lock(mMutex);
-    status_t result =
-            releaseBufferLocked(mPendingRelease.currentTexture, mPendingRelease.graphicBuffer);
-    if (result < NO_ERROR) {
-        BLC_LOGE("releasePendingBuffer failed: %s (%d)", strerror(-result), result);
-    }
-    mPendingRelease = PendingRelease();
-    return true;
-}
-
-sp<Fence> BufferLayerConsumer::getPrevFinalReleaseFence() const {
-    Mutex::Autolock lock(mMutex);
-    return ConsumerBase::mPrevFinalReleaseFence;
-}
-
-status_t BufferLayerConsumer::acquireBufferLocked(BufferItem* item, nsecs_t presentWhen,
-                                                  uint64_t maxFrameNumber) {
-    status_t err = ConsumerBase::acquireBufferLocked(item, presentWhen, maxFrameNumber);
-    if (err != NO_ERROR) {
-        return err;
-    }
-
-    // If item->mGraphicBuffer is not null, this buffer has not been acquired
-    // before, so we need to clean up old references.
-    if (item->mGraphicBuffer != nullptr) {
-        std::lock_guard<std::mutex> lock(mImagesMutex);
-        if (mImages[item->mSlot] == nullptr || mImages[item->mSlot]->getBuffer() == nullptr ||
-            mImages[item->mSlot]->getBuffer()->getId() != item->mGraphicBuffer->getId()) {
-            mImages[item->mSlot] = std::make_shared<
-                    renderengine::impl::ExternalTexture>(item->mGraphicBuffer, mRE,
-                                                         renderengine::impl::ExternalTexture::
-                                                                 Usage::READABLE);
-        }
-    }
-
-    return NO_ERROR;
-}
-
-status_t BufferLayerConsumer::updateAndReleaseLocked(const BufferItem& item,
-                                                     PendingRelease* pendingRelease) {
-    status_t err = NO_ERROR;
-
-    int slot = item.mSlot;
-
-    BLC_LOGV("updateAndRelease: (slot=%d buf=%p) -> (slot=%d buf=%p)", mCurrentTexture,
-             (mCurrentTextureBuffer != nullptr && mCurrentTextureBuffer->getBuffer() != nullptr)
-                     ? mCurrentTextureBuffer->getBuffer()->handle
-                     : 0,
-             slot, mSlots[slot].mGraphicBuffer->handle);
-
-    // Hang onto the pointer so that it isn't freed in the call to
-    // releaseBufferLocked() if we're in shared buffer mode and both buffers are
-    // the same.
-
-    std::shared_ptr<renderengine::ExternalTexture> nextTextureBuffer;
-    {
-        std::lock_guard<std::mutex> lock(mImagesMutex);
-        nextTextureBuffer = mImages[slot];
-    }
-
-    // release old buffer
-    if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
-        if (pendingRelease == nullptr) {
-            status_t status =
-                    releaseBufferLocked(mCurrentTexture, mCurrentTextureBuffer->getBuffer());
-            if (status < NO_ERROR) {
-                BLC_LOGE("updateAndRelease: failed to release buffer: %s (%d)", strerror(-status),
-                         status);
-                err = status;
-                // keep going, with error raised [?]
-            }
-        } else {
-            pendingRelease->currentTexture = mCurrentTexture;
-            pendingRelease->graphicBuffer = mCurrentTextureBuffer->getBuffer();
-            pendingRelease->isPending = true;
-        }
-    }
-
-    // Update the BufferLayerConsumer state.
-    mCurrentTexture = slot;
-    mCurrentTextureBuffer = nextTextureBuffer;
-    mCurrentCrop = item.mCrop;
-    mCurrentTransform = item.mTransform;
-    mCurrentScalingMode = item.mScalingMode;
-    mCurrentTimestamp = item.mTimestamp;
-    mCurrentDataSpace = static_cast<ui::Dataspace>(item.mDataSpace);
-    mCurrentHdrMetadata = item.mHdrMetadata;
-    mCurrentFence = item.mFence;
-    mCurrentFenceTime = item.mFenceTime;
-    mCurrentFrameNumber = item.mFrameNumber;
-    mCurrentTransformToDisplayInverse = item.mTransformToDisplayInverse;
-    mCurrentSurfaceDamage = item.mSurfaceDamage;
-    mCurrentApi = item.mApi;
-
-    computeCurrentTransformMatrixLocked();
-
-    return err;
-}
-
-void BufferLayerConsumer::getTransformMatrix(float mtx[16]) {
-    Mutex::Autolock lock(mMutex);
-    memcpy(mtx, mCurrentTransformMatrix, sizeof(mCurrentTransformMatrix));
-}
-
-void BufferLayerConsumer::setFilteringEnabled(bool enabled) {
-    Mutex::Autolock lock(mMutex);
-    if (mAbandoned) {
-        BLC_LOGE("setFilteringEnabled: BufferLayerConsumer is abandoned!");
-        return;
-    }
-    bool needsRecompute = mFilteringEnabled != enabled;
-    mFilteringEnabled = enabled;
-
-    if (needsRecompute && mCurrentTextureBuffer == nullptr) {
-        BLC_LOGD("setFilteringEnabled called with mCurrentTextureBuffer == nullptr");
-    }
-
-    if (needsRecompute && mCurrentTextureBuffer != nullptr) {
-        computeCurrentTransformMatrixLocked();
-    }
-}
-
-void BufferLayerConsumer::computeCurrentTransformMatrixLocked() {
-    BLC_LOGV("computeCurrentTransformMatrixLocked");
-    if (mCurrentTextureBuffer == nullptr || mCurrentTextureBuffer->getBuffer() == nullptr) {
-        BLC_LOGD("computeCurrentTransformMatrixLocked: "
-                 "mCurrentTextureBuffer is nullptr");
-    }
-    GLConsumer::computeTransformMatrix(mCurrentTransformMatrix,
-                                       mCurrentTextureBuffer == nullptr
-                                               ? nullptr
-                                               : mCurrentTextureBuffer->getBuffer(),
-                                       getCurrentCropLocked(), mCurrentTransform,
-                                       mFilteringEnabled);
-}
-
-nsecs_t BufferLayerConsumer::getTimestamp() {
-    BLC_LOGV("getTimestamp");
-    Mutex::Autolock lock(mMutex);
-    return mCurrentTimestamp;
-}
-
-ui::Dataspace BufferLayerConsumer::getCurrentDataSpace() {
-    BLC_LOGV("getCurrentDataSpace");
-    Mutex::Autolock lock(mMutex);
-    return mCurrentDataSpace;
-}
-
-const HdrMetadata& BufferLayerConsumer::getCurrentHdrMetadata() const {
-    BLC_LOGV("getCurrentHdrMetadata");
-    Mutex::Autolock lock(mMutex);
-    return mCurrentHdrMetadata;
-}
-
-uint64_t BufferLayerConsumer::getFrameNumber() {
-    BLC_LOGV("getFrameNumber");
-    Mutex::Autolock lock(mMutex);
-    return mCurrentFrameNumber;
-}
-
-bool BufferLayerConsumer::getTransformToDisplayInverse() const {
-    Mutex::Autolock lock(mMutex);
-    return mCurrentTransformToDisplayInverse;
-}
-
-const Region& BufferLayerConsumer::getSurfaceDamage() const {
-    return mCurrentSurfaceDamage;
-}
-
-void BufferLayerConsumer::mergeSurfaceDamage(const Region& damage) {
-    if (damage.bounds() == Rect::INVALID_RECT ||
-        mCurrentSurfaceDamage.bounds() == Rect::INVALID_RECT) {
-        mCurrentSurfaceDamage = Region::INVALID_REGION;
-    } else {
-        mCurrentSurfaceDamage |= damage;
-    }
-}
-
-int BufferLayerConsumer::getCurrentApi() const {
-    Mutex::Autolock lock(mMutex);
-    return mCurrentApi;
-}
-
-std::shared_ptr<renderengine::ExternalTexture> BufferLayerConsumer::getCurrentBuffer(
-        int* outSlot, sp<Fence>* outFence) const {
-    Mutex::Autolock lock(mMutex);
-
-    if (outSlot != nullptr) {
-        *outSlot = mCurrentTexture;
-    }
-
-    if (outFence != nullptr) {
-        *outFence = mCurrentFence;
-    }
-
-    return mCurrentTextureBuffer == nullptr ? nullptr : mCurrentTextureBuffer;
-}
-
-Rect BufferLayerConsumer::getCurrentCrop() const {
-    Mutex::Autolock lock(mMutex);
-    return getCurrentCropLocked();
-}
-
-Rect BufferLayerConsumer::getCurrentCropLocked() const {
-    uint32_t width = mDefaultWidth;
-    uint32_t height = mDefaultHeight;
-    // If the buffer comes with a rotated bit for 90 (or 270) degrees, switch width/height in order
-    // to scale and crop correctly.
-    if (mCurrentTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) {
-        width = mDefaultHeight;
-        height = mDefaultWidth;
-    }
-
-    return (mCurrentScalingMode == NATIVE_WINDOW_SCALING_MODE_SCALE_CROP)
-            ? GLConsumer::scaleDownCrop(mCurrentCrop, width, height)
-            : mCurrentCrop;
-}
-
-uint32_t BufferLayerConsumer::getCurrentTransform() const {
-    Mutex::Autolock lock(mMutex);
-    return mCurrentTransform;
-}
-
-uint32_t BufferLayerConsumer::getCurrentScalingMode() const {
-    Mutex::Autolock lock(mMutex);
-    return mCurrentScalingMode;
-}
-
-sp<Fence> BufferLayerConsumer::getCurrentFence() const {
-    Mutex::Autolock lock(mMutex);
-    return mCurrentFence;
-}
-
-std::shared_ptr<FenceTime> BufferLayerConsumer::getCurrentFenceTime() const {
-    Mutex::Autolock lock(mMutex);
-    return mCurrentFenceTime;
-}
-
-void BufferLayerConsumer::freeBufferLocked(int slotIndex) {
-    BLC_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
-    std::lock_guard<std::mutex> lock(mImagesMutex);
-    if (slotIndex == mCurrentTexture) {
-        mCurrentTexture = BufferQueue::INVALID_BUFFER_SLOT;
-    }
-    mImages[slotIndex] = nullptr;
-    ConsumerBase::freeBufferLocked(slotIndex);
-}
-
-void BufferLayerConsumer::onDisconnect() {
-    Mutex::Autolock lock(mMutex);
-
-    if (mAbandoned) {
-        // Nothing to do if we're already abandoned.
-        return;
-    }
-
-    mLayer->onDisconnect();
-}
-
-void BufferLayerConsumer::onSidebandStreamChanged() {
-    [[maybe_unused]] FrameAvailableListener* unsafeFrameAvailableListener = nullptr;
-    {
-        Mutex::Autolock lock(mFrameAvailableMutex);
-        unsafeFrameAvailableListener = mFrameAvailableListener.unsafe_get();
-    }
-    sp<ContentsChangedListener> listener;
-    { // scope for the lock
-        Mutex::Autolock lock(mMutex);
-        ALOG_ASSERT(unsafeFrameAvailableListener == mContentsChangedListener.unsafe_get());
-        listener = mContentsChangedListener.promote();
-    }
-
-    if (listener != nullptr) {
-        listener->onSidebandStreamChanged();
-    }
-}
-
-void BufferLayerConsumer::onBufferAvailable(const BufferItem& item) {
-    if (item.mGraphicBuffer != nullptr && item.mSlot != BufferQueue::INVALID_BUFFER_SLOT) {
-        std::lock_guard<std::mutex> lock(mImagesMutex);
-        const std::shared_ptr<renderengine::ExternalTexture>& oldImage = mImages[item.mSlot];
-        if (oldImage == nullptr || oldImage->getBuffer() == nullptr ||
-            oldImage->getBuffer()->getId() != item.mGraphicBuffer->getId()) {
-            mImages[item.mSlot] = std::make_shared<
-                    renderengine::impl::ExternalTexture>(item.mGraphicBuffer, mRE,
-                                                         renderengine::impl::ExternalTexture::
-                                                                 Usage::READABLE);
-        }
-    }
-}
-
-void BufferLayerConsumer::abandonLocked() {
-    BLC_LOGV("abandonLocked");
-    mCurrentTextureBuffer = nullptr;
-    for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
-        std::lock_guard<std::mutex> lock(mImagesMutex);
-        mImages[i] = nullptr;
-    }
-    ConsumerBase::abandonLocked();
-}
-
-status_t BufferLayerConsumer::setConsumerUsageBits(uint64_t usage) {
-    return ConsumerBase::setConsumerUsageBits(usage | DEFAULT_USAGE_FLAGS);
-}
-
-void BufferLayerConsumer::dumpLocked(String8& result, const char* prefix) const {
-    result.appendFormat("%smTexName=%d mCurrentTexture=%d\n"
-                        "%smCurrentCrop=[%d,%d,%d,%d] mCurrentTransform=%#x\n",
-                        prefix, mTexName, mCurrentTexture, prefix, mCurrentCrop.left,
-                        mCurrentCrop.top, mCurrentCrop.right, mCurrentCrop.bottom,
-                        mCurrentTransform);
-
-    ConsumerBase::dumpLocked(result, prefix);
-}
-}; // namespace android
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic pop // ignored "-Wconversion"
diff --git a/services/surfaceflinger/BufferLayerConsumer.h b/services/surfaceflinger/BufferLayerConsumer.h
deleted file mode 100644
index 23ad2a3..0000000
--- a/services/surfaceflinger/BufferLayerConsumer.h
+++ /dev/null
@@ -1,354 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_BUFFERLAYERCONSUMER_H
-#define ANDROID_BUFFERLAYERCONSUMER_H
-
-#include <android-base/thread_annotations.h>
-#include <gui/BufferQueueDefs.h>
-#include <gui/ConsumerBase.h>
-#include <gui/HdrMetadata.h>
-#include <renderengine/ExternalTexture.h>
-#include <ui/FenceTime.h>
-#include <ui/GraphicBuffer.h>
-#include <ui/GraphicTypes.h>
-#include <ui/Region.h>
-#include <utils/String8.h>
-#include <utils/Vector.h>
-#include <utils/threads.h>
-
-namespace android {
-// ----------------------------------------------------------------------------
-
-class Layer;
-class String8;
-
-namespace renderengine {
-class RenderEngine;
-} // namespace renderengine
-
-/*
- * BufferLayerConsumer consumes buffers of graphics data from a BufferQueue,
- * and makes them available to RenderEngine as a texture.
- *
- * A typical usage pattern is to call updateTexImage() when a new frame is
- * desired.  If a new frame is available, the frame is latched.  If not, the
- * previous contents are retained.  The texture is attached and updated after
- * bindTextureImage() is called.
- *
- * All calls to updateTexImage must be made with RenderEngine being current.
- * The texture is attached to the TEXTURE_EXTERNAL texture target.
- */
-class BufferLayerConsumer : public ConsumerBase {
-public:
-    static const status_t BUFFER_REJECTED = UNKNOWN_ERROR + 8;
-
-    class BufferRejecter {
-        friend class BufferLayerConsumer;
-        virtual bool reject(const sp<GraphicBuffer>& buf, const BufferItem& item) = 0;
-
-    protected:
-        virtual ~BufferRejecter() {}
-    };
-
-    struct ContentsChangedListener : public FrameAvailableListener {
-        virtual void onSidebandStreamChanged() = 0;
-    };
-
-    // BufferLayerConsumer constructs a new BufferLayerConsumer object.  The
-    // tex parameter indicates the name of the RenderEngine texture to which
-    // images are to be streamed.
-    BufferLayerConsumer(const sp<IGraphicBufferConsumer>& bq, renderengine::RenderEngine& engine,
-                        uint32_t tex, Layer* layer);
-
-    // Sets the contents changed listener. This should be used instead of
-    // ConsumerBase::setFrameAvailableListener().
-    void setContentsChangedListener(const wp<ContentsChangedListener>& listener);
-
-    // updateTexImage acquires the most recently queued buffer, and sets the
-    // image contents of the target texture to it.
-    //
-    // This call may only be made while RenderEngine is current.
-    //
-    // This calls doFenceWait to ensure proper synchronization unless native
-    // fence is supported.
-    //
-    // Unlike the GLConsumer version, this version takes a functor that may be
-    // used to reject the newly acquired buffer.  It also does not bind the
-    // RenderEngine texture until bindTextureImage is called.
-    status_t updateTexImage(BufferRejecter* rejecter, nsecs_t expectedPresentTime,
-                            bool* autoRefresh, bool* queuedBuffer, uint64_t maxFrameNumber);
-
-    // setReleaseFence stores a fence that will signal when the current buffer
-    // is no longer being read. This fence will be returned to the producer
-    // when the current buffer is released by updateTexImage(). Multiple
-    // fences can be set for a given buffer; they will be merged into a single
-    // union fence.
-    void setReleaseFence(const sp<Fence>& fence);
-
-    bool releasePendingBuffer();
-
-    sp<Fence> getPrevFinalReleaseFence() const;
-
-    // See GLConsumer::getTransformMatrix.
-    void getTransformMatrix(float mtx[16]);
-
-    // getTimestamp retrieves the timestamp associated with the texture image
-    // set by the most recent call to updateTexImage.
-    //
-    // The timestamp is in nanoseconds, and is monotonically increasing. Its
-    // other semantics (zero point, etc) are source-dependent and should be
-    // documented by the source.
-    int64_t getTimestamp();
-
-    // getDataSpace retrieves the DataSpace associated with the texture image
-    // set by the most recent call to updateTexImage.
-    ui::Dataspace getCurrentDataSpace();
-
-    // getCurrentHdrMetadata retrieves the HDR metadata associated with the
-    // texture image set by the most recent call to updateTexImage.
-    const HdrMetadata& getCurrentHdrMetadata() const;
-
-    // getFrameNumber retrieves the frame number associated with the texture
-    // image set by the most recent call to updateTexImage.
-    //
-    // The frame number is an incrementing counter set to 0 at the creation of
-    // the BufferQueue associated with this consumer.
-    uint64_t getFrameNumber();
-
-    bool getTransformToDisplayInverse() const;
-
-    // must be called from SF main thread
-    const Region& getSurfaceDamage() const;
-
-    // Merge the given damage region into the current damage region value.
-    void mergeSurfaceDamage(const Region& damage);
-
-    // getCurrentApi retrieves the API which queues the current buffer.
-    int getCurrentApi() const;
-
-    // See GLConsumer::setDefaultBufferSize.
-    status_t setDefaultBufferSize(uint32_t width, uint32_t height);
-
-    // setFilteringEnabled sets whether the transform matrix should be computed
-    // for use with bilinear filtering.
-    void setFilteringEnabled(bool enabled);
-
-    // getCurrentBuffer returns the buffer associated with the current image.
-    // When outSlot is not nullptr, the current buffer slot index is also
-    // returned. Simiarly, when outFence is not nullptr, the current output
-    // fence is returned.
-    std::shared_ptr<renderengine::ExternalTexture> getCurrentBuffer(
-            int* outSlot = nullptr, sp<Fence>* outFence = nullptr) const;
-
-    // getCurrentCrop returns the cropping rectangle of the current buffer.
-    Rect getCurrentCrop() const;
-
-    // getCurrentTransform returns the transform of the current buffer.
-    uint32_t getCurrentTransform() const;
-
-    // getCurrentScalingMode returns the scaling mode of the current buffer.
-    uint32_t getCurrentScalingMode() const;
-
-    // getCurrentFence returns the fence indicating when the current buffer is
-    // ready to be read from.
-    sp<Fence> getCurrentFence() const;
-
-    // getCurrentFence returns the FenceTime indicating when the current
-    // buffer is ready to be read from.
-    std::shared_ptr<FenceTime> getCurrentFenceTime() const;
-
-    // setConsumerUsageBits overrides the ConsumerBase method to OR
-    // DEFAULT_USAGE_FLAGS to usage.
-    status_t setConsumerUsageBits(uint64_t usage);
-    void onBufferAvailable(const BufferItem& item) EXCLUDES(mImagesMutex);
-
-protected:
-    // abandonLocked overrides the ConsumerBase method to clear
-    // mCurrentTextureImage in addition to the ConsumerBase behavior.
-    virtual void abandonLocked() EXCLUDES(mImagesMutex);
-
-    // dumpLocked overrides the ConsumerBase method to dump BufferLayerConsumer-
-    // specific info in addition to the ConsumerBase behavior.
-    virtual void dumpLocked(String8& result, const char* prefix) const;
-
-    // See ConsumerBase::acquireBufferLocked
-    virtual status_t acquireBufferLocked(BufferItem* item, nsecs_t presentWhen,
-                                         uint64_t maxFrameNumber = 0) override
-            EXCLUDES(mImagesMutex);
-
-    bool canUseImageCrop(const Rect& crop) const;
-
-    struct PendingRelease {
-        PendingRelease() : isPending(false), currentTexture(-1), graphicBuffer() {}
-
-        bool isPending;
-        int currentTexture;
-        sp<GraphicBuffer> graphicBuffer;
-    };
-
-    // This releases the buffer in the slot referenced by mCurrentTexture,
-    // then updates state to refer to the BufferItem, which must be a
-    // newly-acquired buffer. If pendingRelease is not null, the parameters
-    // which would have been passed to releaseBufferLocked upon the successful
-    // completion of the method will instead be returned to the caller, so that
-    // it may call releaseBufferLocked itself later.
-    status_t updateAndReleaseLocked(const BufferItem& item,
-                                    PendingRelease* pendingRelease = nullptr)
-            EXCLUDES(mImagesMutex);
-
-private:
-    // Utility class for managing GraphicBuffer references into renderengine
-    class Image {
-    public:
-        Image(const sp<GraphicBuffer>& graphicBuffer, renderengine::RenderEngine& engine);
-        virtual ~Image();
-        const sp<GraphicBuffer>& graphicBuffer() { return mGraphicBuffer; }
-
-    private:
-        // mGraphicBuffer is the buffer that was used to create this image.
-        sp<GraphicBuffer> mGraphicBuffer;
-        // Back-reference into renderengine to initiate cleanup.
-        renderengine::RenderEngine& mRE;
-        DISALLOW_COPY_AND_ASSIGN(Image);
-    };
-
-    // freeBufferLocked frees up the given buffer slot. If the slot has been
-    // initialized this will release the reference to the GraphicBuffer in
-    // that slot.  Otherwise it has no effect.
-    //
-    // This method must be called with mMutex locked.
-    virtual void freeBufferLocked(int slotIndex) EXCLUDES(mImagesMutex);
-
-    // IConsumerListener interface
-    void onDisconnect() override;
-    void onSidebandStreamChanged() override;
-    void addAndGetFrameTimestamps(const NewFrameEventsEntry*, FrameEventHistoryDelta*) override {}
-
-    // computeCurrentTransformMatrixLocked computes the transform matrix for the
-    // current texture.  It uses mCurrentTransform and the current GraphicBuffer
-    // to compute this matrix and stores it in mCurrentTransformMatrix.
-    // mCurrentTextureImage must not be nullptr.
-    void computeCurrentTransformMatrixLocked();
-
-    // getCurrentCropLocked returns the cropping rectangle of the current buffer.
-    Rect getCurrentCropLocked() const;
-
-    // The default consumer usage flags that BufferLayerConsumer always sets on its
-    // BufferQueue instance; these will be OR:d with any additional flags passed
-    // from the BufferLayerConsumer user. In particular, BufferLayerConsumer will always
-    // consume buffers as hardware textures.
-    static const uint64_t DEFAULT_USAGE_FLAGS = GraphicBuffer::USAGE_HW_TEXTURE;
-
-    // mCurrentTextureBuffer is the buffer containing the current texture. It's
-    // possible that this buffer is not associated with any buffer slot, so we
-    // must track it separately in order to support the getCurrentBuffer method.
-    std::shared_ptr<renderengine::ExternalTexture> mCurrentTextureBuffer;
-
-    // mCurrentCrop is the crop rectangle that applies to the current texture.
-    // It gets set each time updateTexImage is called.
-    Rect mCurrentCrop;
-
-    // mCurrentTransform is the transform identifier for the current texture. It
-    // gets set each time updateTexImage is called.
-    uint32_t mCurrentTransform;
-
-    // mCurrentScalingMode is the scaling mode for the current texture. It gets
-    // set each time updateTexImage is called.
-    uint32_t mCurrentScalingMode;
-
-    // mCurrentFence is the fence received from BufferQueue in updateTexImage.
-    sp<Fence> mCurrentFence;
-
-    // The FenceTime wrapper around mCurrentFence.
-    std::shared_ptr<FenceTime> mCurrentFenceTime{FenceTime::NO_FENCE};
-
-    // mCurrentTransformMatrix is the transform matrix for the current texture.
-    // It gets computed by computeTransformMatrix each time updateTexImage is
-    // called.
-    float mCurrentTransformMatrix[16];
-
-    // mCurrentTimestamp is the timestamp for the current texture. It
-    // gets set each time updateTexImage is called.
-    int64_t mCurrentTimestamp;
-
-    // mCurrentDataSpace is the dataspace for the current texture. It
-    // gets set each time updateTexImage is called.
-    ui::Dataspace mCurrentDataSpace;
-
-    // mCurrentHdrMetadata is the HDR metadata for the current texture. It
-    // gets set each time updateTexImage is called.
-    HdrMetadata mCurrentHdrMetadata;
-
-    // mCurrentFrameNumber is the frame counter for the current texture.
-    // It gets set each time updateTexImage is called.
-    uint64_t mCurrentFrameNumber;
-
-    // Indicates this buffer must be transformed by the inverse transform of the screen
-    // it is displayed onto. This is applied after BufferLayerConsumer::mCurrentTransform.
-    // This must be set/read from SurfaceFlinger's main thread.
-    bool mCurrentTransformToDisplayInverse;
-
-    // The portion of this surface that has changed since the previous frame
-    Region mCurrentSurfaceDamage;
-
-    int mCurrentApi;
-
-    uint32_t mDefaultWidth, mDefaultHeight;
-
-    // mFilteringEnabled indicates whether the transform matrix is computed for
-    // use with bilinear filtering. It defaults to true and is changed by
-    // setFilteringEnabled().
-    bool mFilteringEnabled;
-
-    renderengine::RenderEngine& mRE;
-
-    // mTexName is the name of the RenderEngine texture to which streamed
-    // images will be bound when bindTexImage is called. It is set at
-    // construction time.
-    const uint32_t mTexName;
-
-    // The layer for this BufferLayerConsumer. Always check mAbandoned before accessing.
-    Layer* mLayer GUARDED_BY(mMutex);
-
-    wp<ContentsChangedListener> mContentsChangedListener;
-
-    // mCurrentTexture is the buffer slot index of the buffer that is currently
-    // bound to the RenderEngine texture. It is initialized to INVALID_BUFFER_SLOT,
-    // indicating that no buffer slot is currently bound to the texture. Note,
-    // however, that a value of INVALID_BUFFER_SLOT does not necessarily mean
-    // that no buffer is bound to the texture. A call to setBufferCount will
-    // reset mCurrentTexture to INVALID_BUFFER_SLOT.
-    int mCurrentTexture;
-
-    // Shadow buffer cache for cleaning up renderengine references.
-    std::shared_ptr<renderengine::ExternalTexture>
-            mImages[BufferQueueDefs::NUM_BUFFER_SLOTS] GUARDED_BY(mImagesMutex);
-
-    // Separate mutex guarding the shadow buffer cache.
-    // mImagesMutex can be manipulated with binder threads (e.g. onBuffersAllocated)
-    // which is contentious enough that we can't just use mMutex.
-    mutable std::mutex mImagesMutex;
-
-    // A release that is pending on the receipt of a new release fence from
-    // presentDisplay
-    PendingRelease mPendingRelease;
-};
-
-// ----------------------------------------------------------------------------
-}; // namespace android
-
-#endif // ANDROID_BUFFERLAYERCONSUMER_H
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index fecf5ae..d88d7c9 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -34,6 +34,8 @@
 #include "FrameTracer/FrameTracer.h"
 #include "TimeStats/TimeStats.h"
 
+#define EARLY_RELEASE_ENABLED false
+
 namespace android {
 
 using PresentState = frametimeline::SurfaceFrame::PresentState;
@@ -373,7 +375,7 @@
               addSurfaceFrameDroppedForBuffer(mDrawingState.bufferSurfaceFrameTX);
               mDrawingState.bufferSurfaceFrameTX.reset();
             }
-        } else if (mLastClientCompositionFence != nullptr) {
+        } else if (EARLY_RELEASE_ENABLED && mLastClientCompositionFence != nullptr) {
             callReleaseBufferCallback(mDrawingState.releaseBufferListener,
                                       mDrawingState.buffer->getBuffer(), mDrawingState.frameNumber,
                                       mLastClientCompositionFence,
@@ -851,7 +853,15 @@
     }
 
     const Rect layerSize{getBounds()};
-    return layerSize.width() != bufferWidth || layerSize.height() != bufferHeight;
+    int32_t layerWidth = layerSize.getWidth();
+    int32_t layerHeight = layerSize.getHeight();
+
+    // Align the layer orientation with the buffer before comparism
+    if (mTransformHint & ui::Transform::ROT_90) {
+        std::swap(layerWidth, layerHeight);
+    }
+
+    return layerWidth != bufferWidth || layerHeight != bufferHeight;
 }
 
 void BufferStateLayer::decrementPendingBufferCount() {
diff --git a/services/surfaceflinger/CompositionEngine/tests/MockPowerAdvisor.h b/services/surfaceflinger/CompositionEngine/tests/MockPowerAdvisor.h
index 579636f..8c164ed 100644
--- a/services/surfaceflinger/CompositionEngine/tests/MockPowerAdvisor.h
+++ b/services/surfaceflinger/CompositionEngine/tests/MockPowerAdvisor.h
@@ -55,6 +55,7 @@
     MOCK_METHOD(void, setRequiresClientComposition,
                 (DisplayId displayId, bool requiresClientComposition), (override));
     MOCK_METHOD(void, setExpectedPresentTime, (nsecs_t expectedPresentTime), (override));
+    MOCK_METHOD(void, setPresentFenceTime, (nsecs_t presentFenceTime), (override));
     MOCK_METHOD(void, setHwcPresentDelayedTime,
                 (DisplayId displayId,
                  std::chrono::steady_clock::time_point earliestFrameStartTime));
diff --git a/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp b/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
index f844845..77dda6c 100644
--- a/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
+++ b/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
@@ -238,7 +238,8 @@
         std::lock_guard lock(mPowerHalMutex);
         HalWrapper* const halWrapper = getPowerHal();
         if (halWrapper != nullptr) {
-            halWrapper->sendActualWorkDuration(*predictedDuration, systemTime());
+            halWrapper->sendActualWorkDuration(*predictedDuration + kTargetSafetyMargin.count(),
+                                               systemTime());
         }
     }
 }
@@ -314,6 +315,10 @@
     mExpectedPresentTimes.append(expectedPresentTime);
 }
 
+void PowerAdvisor::setPresentFenceTime(nsecs_t presentFenceTime) {
+    mLastPresentFenceTime = presentFenceTime;
+}
+
 void PowerAdvisor::setFrameDelay(nsecs_t frameDelayDuration) {
     mFrameDelayDuration = frameDelayDuration;
 }
@@ -383,11 +388,11 @@
     // If we're predicting at the end of the frame, we use the current frame as a reference point
     nsecs_t referenceFrameStartTime = (earlyHint ? mCommitStartTimes[-1] : mCommitStartTimes[0]);
 
-    // We need an idea of when the last present fence fired and how long it made us wait
-    // If we're predicting at the start of the frame, we want frame n-2's present fence time
-    // If we're predicting at the end of the frame we want frame n-1's present time
-    nsecs_t referenceFenceTime =
-            (earlyHint ? mExpectedPresentTimes[-2] : mExpectedPresentTimes[-1]);
+    // When the prior frame should be presenting to the display
+    // If we're predicting at the start of the frame, we use last frame's expected present time
+    // If we're predicting at the end of the frame, the present fence time is already known
+    nsecs_t lastFramePresentTime = (earlyHint ? mExpectedPresentTimes[-1] : mLastPresentFenceTime);
+
     // The timing info for the previously calculated display, if there was one
     std::optional<DisplayTimeline> previousDisplayReferenceTiming;
     std::vector<DisplayId>&& displayIds =
@@ -401,7 +406,11 @@
         }
 
         auto& displayData = mDisplayTimingData.at(displayId);
-        referenceTiming = displayData.calculateDisplayTimeline(referenceFenceTime);
+
+        // mLastPresentFenceTime should always be the time of the reference frame, since it will be
+        // the previous frame's present fence if called at the start, and current frame's if called
+        // at the end
+        referenceTiming = displayData.calculateDisplayTimeline(mLastPresentFenceTime);
 
         // If this is the first display, include the duration before hwc present starts
         if (!previousDisplayReferenceTiming.has_value()) {
@@ -411,14 +420,18 @@
                     previousDisplayReferenceTiming->hwcPresentEndTime;
         }
 
-        estimatedTiming = referenceTiming.estimateTimelineFromReference(mExpectedPresentTimes[-1],
-                                                                        estimatedEndTime);
+        // Late hint can re-use reference timing here since it's estimating its own reference frame
+        estimatedTiming = earlyHint
+                ? referenceTiming.estimateTimelineFromReference(lastFramePresentTime,
+                                                                estimatedEndTime)
+                : referenceTiming;
+
         // Update predicted present finish time with this display's present time
         estimatedEndTime = estimatedTiming.hwcPresentEndTime;
 
         // Track how long we spent waiting for the fence, can be excluded from the timing estimate
-        idleDuration += estimatedTiming.probablyWaitsForReleaseFence
-                ? mExpectedPresentTimes[-1] - estimatedTiming.releaseFenceWaitStartTime
+        idleDuration += estimatedTiming.probablyWaitsForPresentFence
+                ? lastFramePresentTime - estimatedTiming.presentFenceWaitStartTime
                 : 0;
 
         // Track how long we spent waiting to present, can be excluded from the timing estimate
@@ -475,15 +488,15 @@
     // We don't predict waiting for vsync alignment yet
     estimated.hwcPresentDelayDuration = 0;
 
-    // For now just re-use last frame's post-present duration and assume it will not change much
     // How long we expect to run before we start waiting for the fence
-    // If it's the early hint we exclude time we spent waiting for a vsync, otherwise don't
-    estimated.releaseFenceWaitStartTime = estimated.hwcPresentStartTime +
-            (releaseFenceWaitStartTime - (hwcPresentStartTime + hwcPresentDelayDuration));
-    estimated.probablyWaitsForReleaseFence = fenceTime > estimated.releaseFenceWaitStartTime;
-    estimated.hwcPresentEndTime = postReleaseFenceHwcPresentDuration +
-            (estimated.probablyWaitsForReleaseFence ? fenceTime
-                                                    : estimated.releaseFenceWaitStartTime);
+    // For now just re-use last frame's post-present duration and assume it will not change much
+    // Excludes time spent waiting for vsync since that's not going to be consistent
+    estimated.presentFenceWaitStartTime = estimated.hwcPresentStartTime +
+            (presentFenceWaitStartTime - (hwcPresentStartTime + hwcPresentDelayDuration));
+    estimated.probablyWaitsForPresentFence = fenceTime > estimated.presentFenceWaitStartTime;
+    estimated.hwcPresentEndTime = postPresentFenceHwcPresentDuration +
+            (estimated.probablyWaitsForPresentFence ? fenceTime
+                                                    : estimated.presentFenceWaitStartTime);
     return estimated;
 }
 
@@ -509,16 +522,16 @@
     // How long hwc present was delayed waiting for the next appropriate vsync
     timeline.hwcPresentDelayDuration =
             (waitedOnHwcPresentTime ? *hwcPresentDelayedTime - *hwcPresentStartTime : 0);
-    // When we started waiting for the release fence after calling into hwc present
-    timeline.releaseFenceWaitStartTime =
+    // When we started waiting for the present fence after calling into hwc present
+    timeline.presentFenceWaitStartTime =
             timeline.hwcPresentStartTime + timeline.hwcPresentDelayDuration + fenceWaitStartDelay;
-    timeline.probablyWaitsForReleaseFence = fenceTime > timeline.releaseFenceWaitStartTime &&
+    timeline.probablyWaitsForPresentFence = fenceTime > timeline.presentFenceWaitStartTime &&
             fenceTime < timeline.hwcPresentEndTime;
 
     // How long we ran after we finished waiting for the fence but before hwc present finished
-    timeline.postReleaseFenceHwcPresentDuration = timeline.hwcPresentEndTime -
-            (timeline.probablyWaitsForReleaseFence ? fenceTime
-                                                   : timeline.releaseFenceWaitStartTime);
+    timeline.postPresentFenceHwcPresentDuration = timeline.hwcPresentEndTime -
+            (timeline.probablyWaitsForPresentFence ? fenceTime
+                                                   : timeline.presentFenceWaitStartTime);
     return timeline;
 }
 
diff --git a/services/surfaceflinger/DisplayHardware/PowerAdvisor.h b/services/surfaceflinger/DisplayHardware/PowerAdvisor.h
index bdc7927..98921b0 100644
--- a/services/surfaceflinger/DisplayHardware/PowerAdvisor.h
+++ b/services/surfaceflinger/DisplayHardware/PowerAdvisor.h
@@ -70,7 +70,10 @@
     // Reports the start and end times of a hwc present call this frame for a given display
     virtual void setHwcPresentTiming(DisplayId displayId, nsecs_t presentStartTime,
                                      nsecs_t presentEndTime) = 0;
+    // Reports the expected time that the current frame will present to the display
     virtual void setExpectedPresentTime(nsecs_t expectedPresentTime) = 0;
+    // Reports the most recent present fence time once it's known at the end of the frame
+    virtual void setPresentFenceTime(nsecs_t presentFenceTime) = 0;
     // Reports whether a display used client composition this frame
     virtual void setRequiresClientComposition(DisplayId displayId,
                                               bool requiresClientComposition) = 0;
@@ -139,6 +142,7 @@
     void setSkippedValidate(DisplayId displayId, bool skipped) override;
     void setRequiresClientComposition(DisplayId displayId, bool requiresClientComposition) override;
     void setExpectedPresentTime(nsecs_t expectedPresentTime) override;
+    void setPresentFenceTime(nsecs_t presentFenceTime) override;
     void setHwcPresentDelayedTime(
             DisplayId displayId,
             std::chrono::steady_clock::time_point earliestFrameStartTime) override;
@@ -172,13 +176,13 @@
         nsecs_t hwcPresentEndTime = -1;
         // How long the actual hwc present was delayed after hwcPresentStartTime
         nsecs_t hwcPresentDelayDuration = 0;
-        // When we think we started waiting for the release fence after calling into hwc present and
+        // When we think we started waiting for the present fence after calling into hwc present and
         // after potentially waiting for the earliest present time
-        nsecs_t releaseFenceWaitStartTime = -1;
+        nsecs_t presentFenceWaitStartTime = -1;
         // How long we ran after we finished waiting for the fence but before hwc present finished
-        nsecs_t postReleaseFenceHwcPresentDuration = 0;
+        nsecs_t postPresentFenceHwcPresentDuration = 0;
         // Are we likely to have waited for the present fence during composition
-        bool probablyWaitsForReleaseFence = false;
+        bool probablyWaitsForPresentFence = false;
         // Estimate one frame's timeline from that of a previous frame
         DisplayTimeline estimateTimelineFromReference(nsecs_t fenceTime, nsecs_t displayStartTime);
     };
@@ -248,7 +252,9 @@
     // Buffer of recent commit start times
     RingBuffer<nsecs_t, 2> mCommitStartTimes;
     // Buffer of recent expected present times
-    RingBuffer<nsecs_t, 3> mExpectedPresentTimes;
+    RingBuffer<nsecs_t, 2> mExpectedPresentTimes;
+    // Most recent present fence time, set at the end of the frame once known
+    nsecs_t mLastPresentFenceTime = -1;
     // Target for the entire pipeline including gpu
     std::optional<nsecs_t> mTotalFrameTargetDuration;
     // Updated list of display IDs
@@ -258,10 +264,8 @@
     std::optional<bool> mSupportsPowerHint;
     bool mPowerHintSessionRunning = false;
 
-    // An adjustable safety margin which moves the "target" earlier to allow flinger to
-    // go a bit over without dropping a frame, especially since we can't measure
-    // the exact time hwc finishes composition so "actual" durations are measured
-    // from the end of present() instead, which is a bit later.
+    // An adjustable safety margin which pads the "actual" value sent to PowerHAL,
+    // encouraging more aggressive boosting to give SurfaceFlinger a larger margin for error
     static constexpr const std::chrono::nanoseconds kTargetSafetyMargin = 1ms;
 
     // How long we expect hwc to run after the present call until it waits for the fence
diff --git a/services/surfaceflinger/FrameTimeline/FrameTimeline.cpp b/services/surfaceflinger/FrameTimeline/FrameTimeline.cpp
index 66beff2..3e69b5c 100644
--- a/services/surfaceflinger/FrameTimeline/FrameTimeline.cpp
+++ b/services/surfaceflinger/FrameTimeline/FrameTimeline.cpp
@@ -289,7 +289,7 @@
         minTime = std::min(minTime, actuals.endTime);
     }
     if (actuals.presentTime != 0) {
-        minTime = std::min(minTime, actuals.endTime);
+        minTime = std::min(minTime, actuals.presentTime);
     }
     return minTime;
 }
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 68e0a96..16cf903 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -70,8 +70,6 @@
 #include "FrameTimeline.h"
 #include "FrameTracer/FrameTracer.h"
 #include "LayerProtoHelper.h"
-#include "LayerRejecter.h"
-#include "MonitoredProducer.h"
 #include "SurfaceFlinger.h"
 #include "TimeStats/TimeStats.h"
 #include "TunnelModeEnabledReporter.h"
@@ -148,6 +146,7 @@
     mDrawingState.isTrustedOverlay = false;
     mDrawingState.dropInputMode = gui::DropInputMode::NONE;
     mDrawingState.dimmingEnabled = true;
+    mDrawingState.defaultFrameRateCompatibility = FrameRateCompatibility::Default;
 
     if (args.flags & ISurfaceComposerClient::eNoColorFill) {
         // Set an invalid color so there is no color fill.
@@ -409,7 +408,7 @@
     const auto& drawingState{getDrawingState()};
     const auto alpha = static_cast<float>(getAlpha());
     const bool opaque = isOpaque(drawingState);
-    const bool usesRoundedCorners = getRoundedCornerState().radius != 0.f;
+    const bool usesRoundedCorners = hasRoundedCorners();
 
     auto blendMode = Hwc2::IComposerClient::BlendMode::NONE;
     if (!opaque || alpha != 1.0f) {
@@ -485,7 +484,7 @@
     compositionState->hasProtectedContent = isProtected();
     compositionState->dimmingEnabled = isDimmingEnabled();
 
-    const bool usesRoundedCorners = getRoundedCornerState().radius != 0.f;
+    const bool usesRoundedCorners = hasRoundedCorners();
 
     compositionState->isOpaque =
             isOpaque(drawingState) && !usesRoundedCorners && getAlpha() == 1.0_hf;
@@ -724,7 +723,7 @@
 
     if (s.sequence != mLastCommittedTxSequence) {
         // invalidate and recompute the visible regions if needed
-         mLastCommittedTxSequence = s.sequence;
+        mLastCommittedTxSequence = s.sequence;
         flags |= eVisibleRegion;
         this->contentDirty = true;
 
@@ -732,6 +731,10 @@
         mNeedsFiltering = getActiveTransform(s).needsBilinearFiltering();
     }
 
+    if (!mPotentialCursor && (flags & Layer::eVisibleRegion)) {
+        mFlinger->mUpdateInputInfo = true;
+    }
+
     commitTransaction(mDrawingState);
 
     return flags;
@@ -882,7 +885,7 @@
     if (mDrawingState.isTrustedOverlay == isTrustedOverlay) return false;
     mDrawingState.isTrustedOverlay = isTrustedOverlay;
     mDrawingState.modified = true;
-    mFlinger->mInputInfoChanged = true;
+    mFlinger->mUpdateInputInfo = true;
     setTransactionFlags(eTransactionNeeded);
     return true;
 }
@@ -979,6 +982,13 @@
     return true;
 }
 bool Layer::setMatrix(const layer_state_t::matrix22_t& matrix) {
+    if (matrix.dsdx == mDrawingState.transform.dsdx() &&
+        matrix.dtdy == mDrawingState.transform.dtdy() &&
+        matrix.dtdx == mDrawingState.transform.dtdx() &&
+        matrix.dsdy == mDrawingState.transform.dsdy()) {
+        return false;
+    }
+
     ui::Transform t;
     t.set(matrix.dsdx, matrix.dtdy, matrix.dtdx, matrix.dsdy);
 
@@ -1090,6 +1100,19 @@
     return Layer::PRIORITY_UNSET;
 }
 
+bool Layer::setDefaultFrameRateCompatibility(FrameRateCompatibility compatibility) {
+    if (mDrawingState.defaultFrameRateCompatibility == compatibility) return false;
+    mDrawingState.defaultFrameRateCompatibility = compatibility;
+    mDrawingState.modified = true;
+    mFlinger->mScheduler->setDefaultFrameRateCompatibility(this);
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+scheduler::LayerInfo::FrameRateCompatibility Layer::getDefaultFrameRateCompatibility() const {
+    return mDrawingState.defaultFrameRateCompatibility;
+}
+
 bool Layer::isLayerFocusedBasedOnPriority(int32_t priority) {
     return priority == PRIORITY_FOCUSED_WITH_MODE || priority == PRIORITY_FOCUSED_WITHOUT_MODE;
 };
@@ -1943,27 +1966,22 @@
     const auto& parent = mDrawingParent.promote();
     if (parent != nullptr) {
         parentSettings = parent->getRoundedCornerState();
-        if (parentSettings.radius > 0) {
+        if (parentSettings.hasRoundedCorners()) {
             ui::Transform t = getActiveTransform(getDrawingState());
             t = t.inverse();
             parentSettings.cropRect = t.transform(parentSettings.cropRect);
-            // The rounded corners shader only accepts 1 corner radius for performance reasons,
-            // but a transform matrix can define horizontal and vertical scales.
-            // Let's take the average between both of them and pass into the shader, practically we
-            // never do this type of transformation on windows anyway.
-            auto scaleX = sqrtf(t[0][0] * t[0][0] + t[0][1] * t[0][1]);
-            auto scaleY = sqrtf(t[1][0] * t[1][0] + t[1][1] * t[1][1]);
-            parentSettings.radius *= (scaleX + scaleY) / 2.0f;
+            parentSettings.radius.x *= t.getScaleX();
+            parentSettings.radius.y *= t.getScaleY();
         }
     }
 
     // Get layer settings
     Rect layerCropRect = getCroppedBufferSize(getDrawingState());
-    const float radius = getDrawingState().cornerRadius;
+    const vec2 radius(getDrawingState().cornerRadius, getDrawingState().cornerRadius);
     RoundedCornerState layerSettings(layerCropRect.toFloatRect(), radius);
-    const bool layerSettingsValid = layerSettings.radius > 0 && layerCropRect.isValid();
+    const bool layerSettingsValid = layerSettings.hasRoundedCorners() && layerCropRect.isValid();
 
-    if (layerSettingsValid && parentSettings.radius > 0) {
+    if (layerSettingsValid && parentSettings.hasRoundedCorners()) {
         // If the parent and the layer have rounded corner settings, use the parent settings if the
         // parent crop is entirely inside the layer crop.
         // This has limitations and cause rendering artifacts. See b/200300845 for correct fix.
@@ -1977,7 +1995,7 @@
         }
     } else if (layerSettingsValid) {
         return layerSettings;
-    } else if (parentSettings.radius > 0) {
+    } else if (parentSettings.hasRoundedCorners()) {
         return parentSettings;
     }
     return {};
@@ -2053,7 +2071,7 @@
     mDrawingState.inputInfo = info;
     mDrawingState.touchableRegionCrop = fromHandle(info.touchableRegionCropHandle.promote());
     mDrawingState.modified = true;
-    mFlinger->mInputInfoChanged = true;
+    mFlinger->mUpdateInputInfo = true;
     setTransactionFlags(eTransactionNeeded);
 }
 
@@ -2098,7 +2116,8 @@
     layerInfo->set_effective_scaling_mode(getEffectiveScalingMode());
 
     layerInfo->set_requested_corner_radius(getDrawingState().cornerRadius);
-    layerInfo->set_corner_radius(getRoundedCornerState().radius);
+    layerInfo->set_corner_radius(
+            (getRoundedCornerState().radius.x + getRoundedCornerState().radius.y) / 2.0);
     layerInfo->set_background_blur_radius(getBackgroundBlurRadius());
     layerInfo->set_is_trusted_overlay(isTrustedOverlay());
     LayerProtoHelper::writeToProtoDeprecated(transform, layerInfo->mutable_transform());
@@ -2632,6 +2651,8 @@
             return FrameRateCompatibility::ExactOrMultiple;
         case ANATIVEWINDOW_FRAME_RATE_EXACT:
             return FrameRateCompatibility::Exact;
+        case ANATIVEWINDOW_FRAME_RATE_MIN:
+            return FrameRateCompatibility::Min;
         case ANATIVEWINDOW_FRAME_RATE_NO_VOTE:
             return FrameRateCompatibility::NoVote;
         default:
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 911ab78..b809c8a 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -53,7 +53,6 @@
 #include "DisplayHardware/HWComposer.h"
 #include "FrameTracker.h"
 #include "LayerVector.h"
-#include "MonitoredProducer.h"
 #include "RenderArea.h"
 #include "Scheduler/LayerInfo.h"
 #include "SurfaceFlinger.h"
@@ -137,13 +136,14 @@
 
     struct RoundedCornerState {
         RoundedCornerState() = default;
-        RoundedCornerState(FloatRect cropRect, float radius)
+        RoundedCornerState(const FloatRect& cropRect, const vec2& radius)
               : cropRect(cropRect), radius(radius) {}
 
         // Rounded rectangle in local layer coordinate space.
         FloatRect cropRect = FloatRect();
         // Radius of the rounded rectangle.
-        float radius = 0.0f;
+        vec2 radius;
+        bool hasRoundedCorners() const { return radius.x > 0.0f && radius.y > 0.0f; }
     };
 
     using FrameRate = scheduler::LayerInfo::FrameRate;
@@ -235,6 +235,9 @@
         // Priority of the layer assigned by Window Manager.
         int32_t frameRateSelectionPriority;
 
+        // Default frame rate compatibility used to set the layer refresh rate votetype.
+        FrameRateCompatibility defaultFrameRateCompatibility;
+
         FrameRate frameRate;
 
         // The combined frame rate of parents / children of this layer
@@ -438,6 +441,7 @@
     virtual bool setBackgroundColor(const half3& color, float alpha, ui::Dataspace dataspace);
     virtual bool setColorSpaceAgnostic(const bool agnostic);
     virtual bool setDimmingEnabled(const bool dimmingEnabled);
+    virtual bool setDefaultFrameRateCompatibility(FrameRateCompatibility compatibility);
     virtual bool setFrameRateSelectionPriority(int32_t priority);
     virtual bool setFixedTransformHint(ui::Transform::RotationFlags fixedTransformHint);
     virtual void setAutoRefresh(bool /* autoRefresh */) {}
@@ -446,6 +450,9 @@
     //  If the variable is not set on the layer, it traverses up the tree to inherit the frame
     //  rate priority from its parent.
     virtual int32_t getFrameRateSelectionPriority() const;
+    //
+    virtual FrameRateCompatibility getDefaultFrameRateCompatibility() const;
+    //
     virtual ui::Dataspace getDataSpace() const { return ui::Dataspace::UNKNOWN; }
 
     virtual sp<compositionengine::LayerFE> getCompositionEngineLayerFE() const;
@@ -599,7 +606,7 @@
     // corner crop does not intersect with its own rounded corner crop.
     virtual RoundedCornerState getRoundedCornerState() const;
 
-    bool hasRoundedCorners() const override { return getRoundedCornerState().radius > .0f; }
+    bool hasRoundedCorners() const override { return getRoundedCornerState().hasRoundedCorners(); }
 
     virtual PixelFormat getPixelFormat() const { return PIXEL_FORMAT_NONE; }
     /**
diff --git a/services/surfaceflinger/LayerRejecter.cpp b/services/surfaceflinger/LayerRejecter.cpp
deleted file mode 100644
index 1c0263b..0000000
--- a/services/surfaceflinger/LayerRejecter.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright (C) 2011 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wconversion"
-
-#include "LayerRejecter.h"
-
-#include <gui/BufferItem.h>
-#include <system/window.h>
-
-#define DEBUG_RESIZE 0
-
-namespace android {
-
-LayerRejecter::LayerRejecter(Layer::State& front, Layer::State& current,
-                             bool& recomputeVisibleRegions, bool stickySet, const std::string& name,
-                             bool transformToDisplayInverse)
-      : mFront(front),
-        mCurrent(current),
-        mRecomputeVisibleRegions(recomputeVisibleRegions),
-        mStickyTransformSet(stickySet),
-        mName(name),
-        mTransformToDisplayInverse(transformToDisplayInverse) {}
-
-bool LayerRejecter::reject(const sp<GraphicBuffer>& buf, const BufferItem& item) {
-    if (buf == nullptr) {
-        return false;
-    }
-
-    uint32_t bufWidth = buf->getWidth();
-    uint32_t bufHeight = buf->getHeight();
-
-    // check that we received a buffer of the right size
-    // (Take the buffer's orientation into account)
-    if (item.mTransform & ui::Transform::ROT_90) {
-        std::swap(bufWidth, bufHeight);
-    }
-
-    if (mTransformToDisplayInverse) {
-        uint32_t invTransform = DisplayDevice::getPrimaryDisplayRotationFlags();
-        if (invTransform & ui::Transform::ROT_90) {
-            std::swap(bufWidth, bufHeight);
-        }
-    }
-
-    int actualScalingMode = item.mScalingMode;
-    bool isFixedSize = actualScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE;
-    if (mFront.active_legacy != mFront.requested_legacy) {
-        if (isFixedSize ||
-            (bufWidth == mFront.requested_legacy.w && bufHeight == mFront.requested_legacy.h)) {
-            // Here we pretend the transaction happened by updating the
-            // current and drawing states. Drawing state is only accessed
-            // in this thread, no need to have it locked
-            mFront.active_legacy = mFront.requested_legacy;
-
-            // We also need to update the current state so that
-            // we don't end-up overwriting the drawing state with
-            // this stale current state during the next transaction
-            //
-            // NOTE: We don't need to hold the transaction lock here
-            // because State::active_legacy is only accessed from this thread.
-            mCurrent.active_legacy = mFront.active_legacy;
-            mCurrent.modified = true;
-
-            // recompute visible region
-            mRecomputeVisibleRegions = true;
-
-            if (mFront.crop != mFront.requestedCrop) {
-                mFront.crop = mFront.requestedCrop;
-                mCurrent.crop = mFront.requestedCrop;
-                mRecomputeVisibleRegions = true;
-            }
-        }
-
-        ALOGD_IF(DEBUG_RESIZE,
-                 "[%s] latchBuffer/reject: buffer (%ux%u, tr=%02x), scalingMode=%d\n"
-                 "  drawing={ active_legacy   ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} "
-                 "(%4d,%4d) "
-                 "}\n"
-                 "            requested_legacy={ wh={%4u,%4u} }}\n",
-                 mName.c_str(), bufWidth, bufHeight, item.mTransform, item.mScalingMode,
-                 mFront.active_legacy.w, mFront.active_legacy.h, mFront.crop.left, mFront.crop.top,
-                 mFront.crop.right, mFront.crop.bottom, mFront.crop.getWidth(),
-                 mFront.crop.getHeight(), mFront.requested_legacy.w, mFront.requested_legacy.h);
-    }
-
-    if (!isFixedSize && !mStickyTransformSet) {
-        if (mFront.active_legacy.w != bufWidth || mFront.active_legacy.h != bufHeight) {
-            // reject this buffer
-            ALOGE("[%s] rejecting buffer: "
-                  "bufWidth=%d, bufHeight=%d, front.active_legacy.{w=%d, h=%d}",
-                  mName.c_str(), bufWidth, bufHeight, mFront.active_legacy.w,
-                  mFront.active_legacy.h);
-            return true;
-        }
-    }
-
-    // if the transparent region has changed (this test is
-    // conservative, but that's fine, worst case we're doing
-    // a bit of extra work), we latch the new one and we
-    // trigger a visible-region recompute.
-    //
-    // We latch the transparent region here, instead of above where we latch
-    // the rest of the geometry because it is only content but not necessarily
-    // resize dependent.
-    if (!mFront.activeTransparentRegion_legacy.hasSameRects(
-                mFront.requestedTransparentRegion_legacy)) {
-        mFront.activeTransparentRegion_legacy = mFront.requestedTransparentRegion_legacy;
-
-        // We also need to update the current state so that
-        // we don't end-up overwriting the drawing state with
-        // this stale current state during the next transaction
-        //
-        // NOTE: We don't need to hold the transaction lock here
-        // because State::active_legacy is only accessed from this thread.
-        mCurrent.activeTransparentRegion_legacy = mFront.activeTransparentRegion_legacy;
-
-        // recompute visible region
-        mRecomputeVisibleRegions = true;
-    }
-
-    return false;
-}
-
-}  // namespace android
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic pop // ignored "-Wconversion"
diff --git a/services/surfaceflinger/LayerRejecter.h b/services/surfaceflinger/LayerRejecter.h
deleted file mode 100644
index 4981f45..0000000
--- a/services/surfaceflinger/LayerRejecter.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include "Layer.h"
-#include "BufferLayerConsumer.h"
-
-namespace android {
-
-class LayerRejecter : public BufferLayerConsumer::BufferRejecter {
-public:
-    LayerRejecter(Layer::State& front, Layer::State& current, bool& recomputeVisibleRegions,
-                  bool stickySet, const std::string& name,
-                  bool transformToDisplayInverse);
-
-    virtual bool reject(const sp<GraphicBuffer>&, const BufferItem&);
-
-private:
-    Layer::State& mFront;
-    Layer::State& mCurrent;
-    bool& mRecomputeVisibleRegions;
-    const bool mStickyTransformSet;
-    const std::string& mName;
-    const bool mTransformToDisplayInverse;
-};
-
-} // namespace android
diff --git a/services/surfaceflinger/MonitoredProducer.cpp b/services/surfaceflinger/MonitoredProducer.cpp
deleted file mode 100644
index df76f50..0000000
--- a/services/surfaceflinger/MonitoredProducer.cpp
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
- * Copyright 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wconversion"
-
-#include "MonitoredProducer.h"
-#include "Layer.h"
-#include "SurfaceFlinger.h"
-
-#include "Scheduler/MessageQueue.h"
-
-namespace android {
-
-MonitoredProducer::MonitoredProducer(const sp<IGraphicBufferProducer>& producer,
-        const sp<SurfaceFlinger>& flinger,
-        const wp<Layer>& layer) :
-    mProducer(producer),
-    mFlinger(flinger),
-    mLayer(layer) {}
-
-MonitoredProducer::~MonitoredProducer() {}
-
-status_t MonitoredProducer::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
-    return mProducer->requestBuffer(slot, buf);
-}
-
-status_t MonitoredProducer::setMaxDequeuedBufferCount(
-        int maxDequeuedBuffers) {
-    return mProducer->setMaxDequeuedBufferCount(maxDequeuedBuffers);
-}
-
-status_t MonitoredProducer::setAsyncMode(bool async) {
-    return mProducer->setAsyncMode(async);
-}
-
-status_t MonitoredProducer::dequeueBuffer(int* slot, sp<Fence>* fence, uint32_t w, uint32_t h,
-                                          PixelFormat format, uint64_t usage,
-                                          uint64_t* outBufferAge,
-                                          FrameEventHistoryDelta* outTimestamps) {
-    return mProducer->dequeueBuffer(slot, fence, w, h, format, usage, outBufferAge, outTimestamps);
-}
-
-status_t MonitoredProducer::detachBuffer(int slot) {
-    return mProducer->detachBuffer(slot);
-}
-
-status_t MonitoredProducer::detachNextBuffer(sp<GraphicBuffer>* outBuffer,
-        sp<Fence>* outFence) {
-    return mProducer->detachNextBuffer(outBuffer, outFence);
-}
-
-status_t MonitoredProducer::attachBuffer(int* outSlot,
-        const sp<GraphicBuffer>& buffer) {
-    return mProducer->attachBuffer(outSlot, buffer);
-}
-
-status_t MonitoredProducer::queueBuffer(int slot, const QueueBufferInput& input,
-        QueueBufferOutput* output) {
-    return mProducer->queueBuffer(slot, input, output);
-}
-
-status_t MonitoredProducer::cancelBuffer(int slot, const sp<Fence>& fence) {
-    return mProducer->cancelBuffer(slot, fence);
-}
-
-int MonitoredProducer::query(int what, int* value) {
-    return mProducer->query(what, value);
-}
-
-status_t MonitoredProducer::connect(const sp<IProducerListener>& listener,
-        int api, bool producerControlledByApp, QueueBufferOutput* output) {
-    return mProducer->connect(listener, api, producerControlledByApp, output);
-}
-
-status_t MonitoredProducer::disconnect(int api, DisconnectMode mode) {
-    return mProducer->disconnect(api, mode);
-}
-
-status_t MonitoredProducer::setSidebandStream(const sp<NativeHandle>& stream) {
-    return mProducer->setSidebandStream(stream);
-}
-
-void MonitoredProducer::allocateBuffers(uint32_t width, uint32_t height,
-        PixelFormat format, uint64_t usage) {
-    mProducer->allocateBuffers(width, height, format, usage);
-}
-
-status_t MonitoredProducer::allowAllocation(bool allow) {
-    return mProducer->allowAllocation(allow);
-}
-
-status_t MonitoredProducer::setGenerationNumber(uint32_t generationNumber) {
-    return mProducer->setGenerationNumber(generationNumber);
-}
-
-String8 MonitoredProducer::getConsumerName() const {
-    return mProducer->getConsumerName();
-}
-
-status_t MonitoredProducer::setSharedBufferMode(bool sharedBufferMode) {
-    return mProducer->setSharedBufferMode(sharedBufferMode);
-}
-
-status_t MonitoredProducer::setAutoRefresh(bool autoRefresh) {
-    return mProducer->setAutoRefresh(autoRefresh);
-}
-
-status_t MonitoredProducer::setDequeueTimeout(nsecs_t timeout) {
-    return mProducer->setDequeueTimeout(timeout);
-}
-
-status_t MonitoredProducer::setLegacyBufferDrop(bool drop) {
-    return mProducer->setLegacyBufferDrop(drop);
-}
-
-status_t MonitoredProducer::getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
-        sp<Fence>* outFence, float outTransformMatrix[16]) {
-    return mProducer->getLastQueuedBuffer(outBuffer, outFence,
-            outTransformMatrix);
-}
-
-status_t MonitoredProducer::getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence,
-                                                Rect* outRect, uint32_t* outTransform) {
-    return mProducer->getLastQueuedBuffer(outBuffer, outFence, outRect, outTransform);
-}
-
-void MonitoredProducer::getFrameTimestamps(FrameEventHistoryDelta* outDelta) {
-    mProducer->getFrameTimestamps(outDelta);
-}
-
-status_t MonitoredProducer::getUniqueId(uint64_t* outId) const {
-    return mProducer->getUniqueId(outId);
-}
-
-status_t MonitoredProducer::getConsumerUsage(uint64_t* outUsage) const {
-    return mProducer->getConsumerUsage(outUsage);
-}
-
-status_t MonitoredProducer::setAutoPrerotation(bool autoPrerotation) {
-    return mProducer->setAutoPrerotation(autoPrerotation);
-}
-
-IBinder* MonitoredProducer::onAsBinder() {
-    return this;
-}
-
-sp<Layer> MonitoredProducer::getLayer() const {
-    return mLayer.promote();
-}
-
-// ---------------------------------------------------------------------------
-}; // namespace android
-
-// TODO(b/129481165): remove the #pragma below and fix conversion issues
-#pragma clang diagnostic pop // ignored "-Wconversion"
diff --git a/services/surfaceflinger/MonitoredProducer.h b/services/surfaceflinger/MonitoredProducer.h
deleted file mode 100644
index 3778277..0000000
--- a/services/surfaceflinger/MonitoredProducer.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_MONITORED_PRODUCER_H
-#define ANDROID_MONITORED_PRODUCER_H
-
-#include <gui/IGraphicBufferProducer.h>
-
-namespace android {
-
-class IProducerListener;
-class NativeHandle;
-class SurfaceFlinger;
-class Layer;
-
-// MonitoredProducer wraps an IGraphicBufferProducer so that SurfaceFlinger will
-// be notified upon its destruction
-class MonitoredProducer : public BnGraphicBufferProducer {
-public:
-    MonitoredProducer(const sp<IGraphicBufferProducer>& producer,
-            const sp<SurfaceFlinger>& flinger,
-            const wp<Layer>& layer);
-    virtual ~MonitoredProducer();
-
-    // From IGraphicBufferProducer
-    virtual status_t requestBuffer(int slot, sp<GraphicBuffer>* buf);
-    virtual status_t setMaxDequeuedBufferCount(int maxDequeuedBuffers);
-    virtual status_t setAsyncMode(bool async);
-    virtual status_t dequeueBuffer(int* slot, sp<Fence>* fence, uint32_t w, uint32_t h,
-                                   PixelFormat format, uint64_t usage, uint64_t* outBufferAge,
-                                   FrameEventHistoryDelta* outTimestamps);
-    virtual status_t detachBuffer(int slot);
-    virtual status_t detachNextBuffer(sp<GraphicBuffer>* outBuffer,
-            sp<Fence>* outFence);
-    virtual status_t attachBuffer(int* outSlot,
-            const sp<GraphicBuffer>& buffer);
-    virtual status_t queueBuffer(int slot, const QueueBufferInput& input,
-            QueueBufferOutput* output);
-    virtual status_t cancelBuffer(int slot, const sp<Fence>& fence);
-    virtual int query(int what, int* value);
-    virtual status_t connect(const sp<IProducerListener>& token, int api,
-            bool producerControlledByApp, QueueBufferOutput* output);
-    virtual status_t disconnect(int api, DisconnectMode mode);
-    virtual status_t setSidebandStream(const sp<NativeHandle>& stream);
-    virtual void allocateBuffers(uint32_t width, uint32_t height,
-            PixelFormat format, uint64_t usage);
-    virtual status_t allowAllocation(bool allow);
-    virtual status_t setGenerationNumber(uint32_t generationNumber);
-    virtual String8 getConsumerName() const override;
-    virtual status_t setDequeueTimeout(nsecs_t timeout) override;
-    virtual status_t setLegacyBufferDrop(bool drop) override;
-    virtual status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
-            sp<Fence>* outFence, float outTransformMatrix[16]) override;
-    virtual status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence,
-                                         Rect* outRect, uint32_t* outTransform) override;
-    virtual IBinder* onAsBinder();
-    virtual status_t setSharedBufferMode(bool sharedBufferMode) override;
-    virtual status_t setAutoRefresh(bool autoRefresh) override;
-    virtual void getFrameTimestamps(FrameEventHistoryDelta *outDelta) override;
-    virtual status_t getUniqueId(uint64_t* outId) const override;
-    virtual status_t getConsumerUsage(uint64_t* outUsage) const override;
-    virtual status_t setAutoPrerotation(bool autoPrerotation) override;
-
-    // The Layer which created this producer, and on which queued Buffer's will be displayed.
-    sp<Layer> getLayer() const;
-
-private:
-    sp<IGraphicBufferProducer> mProducer;
-    sp<SurfaceFlinger> mFlinger;
-    // The Layer which created this producer, and on which queued Buffer's will be displayed.
-    wp<Layer> mLayer;
-};
-
-}; // namespace android
-
-#endif // ANDROID_MONITORED_PRODUCER_H
diff --git a/services/surfaceflinger/RefreshRateOverlay.cpp b/services/surfaceflinger/RefreshRateOverlay.cpp
index d4435c2..a9180d4 100644
--- a/services/surfaceflinger/RefreshRateOverlay.cpp
+++ b/services/surfaceflinger/RefreshRateOverlay.cpp
@@ -16,9 +16,10 @@
 
 #include <algorithm>
 
-#include "RefreshRateOverlay.h"
+#include "BackgroundExecutor.h"
 #include "Client.h"
 #include "Layer.h"
+#include "RefreshRateOverlay.h"
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wconversion"
@@ -56,6 +57,14 @@
 
 } // namespace
 
+SurfaceControlHolder::~SurfaceControlHolder() {
+    // Hand the sp<SurfaceControl> to the helper thread to release the last
+    // reference. This makes sure that the SurfaceControl is destructed without
+    // SurfaceFlinger::mStateLock held.
+    BackgroundExecutor::getInstance().sendCallbacks(
+            {[sc = std::move(mSurfaceControl)]() mutable { sc.clear(); }});
+}
+
 void RefreshRateOverlay::SevenSegmentDrawer::drawSegment(Segment segment, int left, SkColor color,
                                                          SkCanvas& canvas) {
     const SkRect rect = [&]() {
@@ -210,21 +219,27 @@
     return buffers;
 }
 
+std::unique_ptr<SurfaceControlHolder> createSurfaceControlHolder() {
+    sp<SurfaceControl> surfaceControl =
+            SurfaceComposerClient::getDefault()
+                    ->createSurface(String8("RefreshRateOverlay"), kBufferWidth, kBufferHeight,
+                                    PIXEL_FORMAT_RGBA_8888,
+                                    ISurfaceComposerClient::eFXSurfaceBufferState);
+    return std::make_unique<SurfaceControlHolder>(std::move(surfaceControl));
+}
+
 RefreshRateOverlay::RefreshRateOverlay(FpsRange fpsRange, bool showSpinner)
       : mFpsRange(fpsRange),
         mShowSpinner(showSpinner),
-        mSurfaceControl(SurfaceComposerClient::getDefault()
-                                ->createSurface(String8("RefreshRateOverlay"), kBufferWidth,
-                                                kBufferHeight, PIXEL_FORMAT_RGBA_8888,
-                                                ISurfaceComposerClient::eFXSurfaceBufferState)) {
+        mSurfaceControl(createSurfaceControlHolder()) {
     if (!mSurfaceControl) {
         ALOGE("%s: Failed to create buffer state layer", __func__);
         return;
     }
 
-    createTransaction(mSurfaceControl)
-            .setLayer(mSurfaceControl, INT32_MAX - 2)
-            .setTrustedOverlay(mSurfaceControl, true)
+    createTransaction(mSurfaceControl->get())
+            .setLayer(mSurfaceControl->get(), INT32_MAX - 2)
+            .setTrustedOverlay(mSurfaceControl->get(), true)
             .apply();
 }
 
@@ -233,7 +248,7 @@
     if (!mSurfaceControl) return kNoBuffers;
 
     const auto transformHint =
-            static_cast<ui::Transform::RotationFlags>(mSurfaceControl->getTransformHint());
+            static_cast<ui::Transform::RotationFlags>(mSurfaceControl->get()->getTransformHint());
 
     // Tell SurfaceFlinger about the pre-rotation on the buffer.
     const auto transform = [&] {
@@ -247,7 +262,9 @@
         }
     }();
 
-    createTransaction(mSurfaceControl).setTransform(mSurfaceControl, transform).apply();
+    createTransaction(mSurfaceControl->get())
+            .setTransform(mSurfaceControl->get(), transform)
+            .apply();
 
     BufferCache::const_iterator it = mBufferCache.find({fps.getIntValue(), transformHint});
     if (it == mBufferCache.end()) {
@@ -289,21 +306,21 @@
     Rect frame((3 * width) >> 4, height >> 5);
     frame.offsetBy(width >> 5, height >> 4);
 
-    createTransaction(mSurfaceControl)
-            .setMatrix(mSurfaceControl, frame.getWidth() / static_cast<float>(kBufferWidth), 0, 0,
-                       frame.getHeight() / static_cast<float>(kBufferHeight))
-            .setPosition(mSurfaceControl, frame.left, frame.top)
+    createTransaction(mSurfaceControl->get())
+            .setMatrix(mSurfaceControl->get(), frame.getWidth() / static_cast<float>(kBufferWidth),
+                       0, 0, frame.getHeight() / static_cast<float>(kBufferHeight))
+            .setPosition(mSurfaceControl->get(), frame.left, frame.top)
             .apply();
 }
 
 void RefreshRateOverlay::setLayerStack(ui::LayerStack stack) {
-    createTransaction(mSurfaceControl).setLayerStack(mSurfaceControl, stack).apply();
+    createTransaction(mSurfaceControl->get()).setLayerStack(mSurfaceControl->get(), stack).apply();
 }
 
 void RefreshRateOverlay::changeRefreshRate(Fps fps) {
     mCurrentFps = fps;
     const auto buffer = getOrCreateBuffers(fps)[mFrame];
-    createTransaction(mSurfaceControl).setBuffer(mSurfaceControl, buffer).apply();
+    createTransaction(mSurfaceControl->get()).setBuffer(mSurfaceControl->get(), buffer).apply();
 }
 
 void RefreshRateOverlay::animate() {
@@ -312,7 +329,7 @@
     const auto& buffers = getOrCreateBuffers(*mCurrentFps);
     mFrame = (mFrame + 1) % buffers.size();
     const auto buffer = buffers[mFrame];
-    createTransaction(mSurfaceControl).setBuffer(mSurfaceControl, buffer).apply();
+    createTransaction(mSurfaceControl->get()).setBuffer(mSurfaceControl->get(), buffer).apply();
 }
 
 } // namespace android
diff --git a/services/surfaceflinger/RefreshRateOverlay.h b/services/surfaceflinger/RefreshRateOverlay.h
index a465a36..a2966e6 100644
--- a/services/surfaceflinger/RefreshRateOverlay.h
+++ b/services/surfaceflinger/RefreshRateOverlay.h
@@ -33,6 +33,20 @@
 
 class GraphicBuffer;
 class SurfaceControl;
+class SurfaceFlinger;
+
+// Helper class to delete the SurfaceControl on a helper thread as
+// SurfaceControl assumes its destruction happens without SurfaceFlinger::mStateLock held.
+class SurfaceControlHolder {
+public:
+    explicit SurfaceControlHolder(sp<SurfaceControl> sc) : mSurfaceControl(std::move(sc)){};
+    ~SurfaceControlHolder();
+
+    const sp<SurfaceControl>& get() const { return mSurfaceControl; }
+
+private:
+    sp<SurfaceControl> mSurfaceControl;
+};
 
 class RefreshRateOverlay {
 public:
@@ -75,7 +89,7 @@
     const FpsRange mFpsRange; // For color interpolation.
     const bool mShowSpinner;
 
-    const sp<SurfaceControl> mSurfaceControl;
+    const std::unique_ptr<SurfaceControlHolder> mSurfaceControl;
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/Scheduler/LayerHistory.cpp b/services/surfaceflinger/Scheduler/LayerHistory.cpp
index 5f64efa..ae111c3 100644
--- a/services/surfaceflinger/Scheduler/LayerHistory.cpp
+++ b/services/surfaceflinger/Scheduler/LayerHistory.cpp
@@ -72,6 +72,20 @@
 
     ALOGD("%s: %s @ %d Hz", __FUNCTION__, info.getName().c_str(), fps);
 }
+
+LayerHistory::LayerVoteType getVoteType(LayerInfo::FrameRateCompatibility compatibility,
+                                        bool contentDetectionEnabled) {
+    LayerHistory::LayerVoteType voteType;
+    if (!contentDetectionEnabled || compatibility == LayerInfo::FrameRateCompatibility::NoVote) {
+        voteType = LayerHistory::LayerVoteType::NoVote;
+    } else if (compatibility == LayerInfo::FrameRateCompatibility::Min) {
+        voteType = LayerHistory::LayerVoteType::Min;
+    } else {
+        voteType = LayerHistory::LayerVoteType::Heuristic;
+    }
+    return voteType;
+}
+
 } // namespace
 
 LayerHistory::LayerHistory()
@@ -81,10 +95,12 @@
 
 LayerHistory::~LayerHistory() = default;
 
-void LayerHistory::registerLayer(Layer* layer, LayerVoteType type) {
+void LayerHistory::registerLayer(Layer* layer, bool contentDetectionEnabled) {
     std::lock_guard lock(mLock);
     LOG_ALWAYS_FATAL_IF(findLayer(layer->getSequence()).first != LayerStatus::NotFound,
                         "%s already registered", layer->getName().c_str());
+    LayerVoteType type =
+            getVoteType(layer->getDefaultFrameRateCompatibility(), contentDetectionEnabled);
     auto info = std::make_unique<LayerInfo>(layer->getName(), layer->getOwnerUid(), type);
 
     // The layer can be placed on either map, it is assumed that partitionLayers() will be called
@@ -132,6 +148,22 @@
     }
 }
 
+void LayerHistory::setDefaultFrameRateCompatibility(Layer* layer, bool contentDetectionEnabled) {
+    std::lock_guard lock(mLock);
+    auto id = layer->getSequence();
+
+    auto [found, layerPair] = findLayer(id);
+    if (found == LayerStatus::NotFound) {
+        // Offscreen layer
+        ALOGV("%s: %s not registered", __func__, layer->getName().c_str());
+        return;
+    }
+
+    const auto& info = layerPair->second;
+    info->setDefaultLayerVote(
+            getVoteType(layer->getDefaultFrameRateCompatibility(), contentDetectionEnabled));
+}
+
 auto LayerHistory::summarize(const RefreshRateConfigs& configs, nsecs_t now) -> Summary {
     Summary summary;
 
@@ -203,6 +235,8 @@
                 switch (frameRate.type) {
                     case Layer::FrameRateCompatibility::Default:
                         return LayerVoteType::ExplicitDefault;
+                    case Layer::FrameRateCompatibility::Min:
+                        return LayerVoteType::Min;
                     case Layer::FrameRateCompatibility::ExactOrMultiple:
                         return LayerVoteType::ExplicitExactOrMultiple;
                     case Layer::FrameRateCompatibility::NoVote:
diff --git a/services/surfaceflinger/Scheduler/LayerHistory.h b/services/surfaceflinger/Scheduler/LayerHistory.h
index 7b6096f..12bec8d 100644
--- a/services/surfaceflinger/Scheduler/LayerHistory.h
+++ b/services/surfaceflinger/Scheduler/LayerHistory.h
@@ -45,7 +45,7 @@
     ~LayerHistory();
 
     // Layers are unregistered when the weak reference expires.
-    void registerLayer(Layer*, LayerVoteType type);
+    void registerLayer(Layer*, bool contentDetectionEnabled);
 
     // Sets the display size. Client is responsible for synchronization.
     void setDisplayArea(uint32_t displayArea) { mDisplayArea = displayArea; }
@@ -63,6 +63,10 @@
     // Marks the layer as active, and records the given state to its history.
     void record(Layer*, nsecs_t presentTime, nsecs_t now, LayerUpdateType updateType);
 
+    // Updates the default frame rate compatibility which takes effect when the app
+    // does not set a preference for refresh rate.
+    void setDefaultFrameRateCompatibility(Layer*, bool contentDetectionEnabled);
+
     using Summary = std::vector<RefreshRateConfigs::LayerRequirement>;
 
     // Rebuilds sets of active/inactive layers, and accumulates stats for active layers.
diff --git a/services/surfaceflinger/Scheduler/LayerInfo.h b/services/surfaceflinger/Scheduler/LayerInfo.h
index 8a3b0b9..28cb24a 100644
--- a/services/surfaceflinger/Scheduler/LayerInfo.h
+++ b/services/surfaceflinger/Scheduler/LayerInfo.h
@@ -74,6 +74,8 @@
     enum class FrameRateCompatibility {
         Default, // Layer didn't specify any specific handling strategy
 
+        Min, // Layer needs the minimum frame rate.
+
         Exact, // Layer needs the exact frame rate.
 
         ExactOrMultiple, // Layer needs the exact frame rate (or a multiple of it) to present the
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 5dd9ad1..3181a7f 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -25,6 +25,7 @@
 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
 #include <android/hardware/configstore/1.1/ISurfaceFlingerConfigs.h>
 #include <configstore/Utils.h>
+#include <ftl/fake_guard.h>
 #include <gui/WindowInfo.h>
 #include <system/window.h>
 #include <ui/DisplayStatInfo.h>
@@ -94,9 +95,13 @@
 }
 
 void Scheduler::setRefreshRateConfigs(std::shared_ptr<RefreshRateConfigs> configs) {
+    // The current RefreshRateConfigs instance may outlive this call, so unbind its idle timer.
     {
-        // The current RefreshRateConfigs instance may outlive this call, so unbind its idle timer.
-        std::scoped_lock lock(mRefreshRateConfigsLock);
+        // mRefreshRateConfigsLock is not locked here to avoid the deadlock
+        // as the callback can attempt to acquire the lock before stopIdleTimer can finish
+        // the execution. It's safe to FakeGuard as main thread is the only thread that
+        // writes to the mRefreshRateConfigs.
+        ftl::FakeGuard guard(mRefreshRateConfigsLock);
         if (mRefreshRateConfigs) {
             mRefreshRateConfigs->stopIdleTimer();
             mRefreshRateConfigs->clearIdleTimerCallbacks();
@@ -492,24 +497,10 @@
 }
 
 void Scheduler::registerLayer(Layer* layer) {
-    using WindowType = gui::WindowInfo::Type;
-
-    scheduler::LayerHistory::LayerVoteType voteType;
-
-    if (!mFeatures.test(Feature::kContentDetection) ||
-        layer->getWindowType() == WindowType::STATUS_BAR) {
-        voteType = scheduler::LayerHistory::LayerVoteType::NoVote;
-    } else if (layer->getWindowType() == WindowType::WALLPAPER) {
-        // Running Wallpaper at Min is considered as part of content detection.
-        voteType = scheduler::LayerHistory::LayerVoteType::Min;
-    } else {
-        voteType = scheduler::LayerHistory::LayerVoteType::Heuristic;
-    }
-
     // If the content detection feature is off, we still keep the layer history,
     // since we use it for other features (like Frame Rate API), so layers
     // still need to be registered.
-    mLayerHistory.registerLayer(layer, voteType);
+    mLayerHistory.registerLayer(layer, mFeatures.test(Feature::kContentDetection));
 }
 
 void Scheduler::deregisterLayer(Layer* layer) {
@@ -530,6 +521,11 @@
     mLayerHistory.setModeChangePending(pending);
 }
 
+void Scheduler::setDefaultFrameRateCompatibility(Layer* layer) {
+    mLayerHistory.setDefaultFrameRateCompatibility(layer,
+                                                   mFeatures.test(Feature::kContentDetection));
+}
+
 void Scheduler::chooseRefreshRateForContent() {
     const auto configs = holdRefreshRateConfigs();
     if (!configs->canSwitch()) return;
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 587a773..7f76d1e 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -178,6 +178,7 @@
     void recordLayerHistory(Layer*, nsecs_t presentTime, LayerHistory::LayerUpdateType updateType)
             EXCLUDES(mRefreshRateConfigsLock);
     void setModeChangePending(bool pending);
+    void setDefaultFrameRateCompatibility(Layer*);
     void deregisterLayer(Layer*);
 
     // Detects content using layer history, and selects a matching refresh rate.
diff --git a/services/surfaceflinger/Scheduler/VsyncSchedule.cpp b/services/surfaceflinger/Scheduler/VsyncSchedule.cpp
index e611658..3a918a1 100644
--- a/services/surfaceflinger/Scheduler/VsyncSchedule.cpp
+++ b/services/surfaceflinger/Scheduler/VsyncSchedule.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
 #include <scheduler/Fps.h>
 #include <scheduler/Timer.h>
 
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 9f4f0a2..a202dda 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -129,7 +129,6 @@
 #include "LayerProtoHelper.h"
 #include "LayerRenderArea.h"
 #include "LayerVector.h"
-#include "MonitoredProducer.h"
 #include "MutexUtils.h"
 #include "NativeWindowSurface.h"
 #include "RefreshRateOverlay.h"
@@ -341,7 +340,7 @@
         mInternalDisplayDensity(getDensityFromProperty("ro.sf.lcd_density", true)),
         mEmulatedDisplayDensity(getDensityFromProperty("qemu.sf.lcd_density", false)),
         mPowerAdvisor(std::make_unique<Hwc2::impl::PowerAdvisor>(*this)),
-        mWindowInfosListenerInvoker(sp<WindowInfosListenerInvoker>::make(*this)) {
+        mWindowInfosListenerInvoker(sp<WindowInfosListenerInvoker>::make()) {
     ALOGI("Using HWComposer service: %s", mHwcServiceName.c_str());
 }
 
@@ -2256,6 +2255,7 @@
 
     // Send a power hint hint after presentation is finished
     if (mPowerHintSessionEnabled) {
+        mPowerAdvisor->setPresentFenceTime(mPreviousPresentFences[0].fenceTime->getSignalTime());
         if (mPowerHintSessionMode.late) {
             mPowerAdvisor->sendActualWorkDuration();
         }
@@ -3114,6 +3114,7 @@
     const KeyedVector<wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays);
     if (!curr.isIdenticalTo(draw)) {
         mVisibleRegionsDirty = true;
+        mUpdateInputInfo = true;
 
         // find the displays that were removed
         // (ie: in drawing state but not in current state)
@@ -3158,6 +3159,7 @@
     if (mSomeChildrenChanged) {
         mVisibleRegionsDirty = true;
         mSomeChildrenChanged = false;
+        mUpdateInputInfo = true;
     }
 
     // Update transform hint.
@@ -3221,6 +3223,7 @@
         mLayersAdded = false;
         // Layers have been added.
         mVisibleRegionsDirty = true;
+        mUpdateInputInfo = true;
     }
 
     // some layers might have been removed, so
@@ -3228,6 +3231,7 @@
     if (mLayersRemoved) {
         mLayersRemoved = false;
         mVisibleRegionsDirty = true;
+        mUpdateInputInfo = true;
         mDrawingState.traverseInZOrder([&](Layer* layer) {
             if (mLayersPendingRemoval.indexOf(layer) >= 0) {
                 // this layer is not visible anymore
@@ -3252,14 +3256,14 @@
     std::vector<WindowInfo> windowInfos;
     std::vector<DisplayInfo> displayInfos;
     bool updateWindowInfo = false;
-    if (mVisibleRegionsDirty || mInputInfoChanged) {
-        mInputInfoChanged = false;
+    if (mUpdateInputInfo) {
+        mUpdateInputInfo = false;
         updateWindowInfo = true;
         buildWindowInfos(windowInfos, displayInfos);
-    }
-    if (!updateWindowInfo && mInputWindowCommands.empty()) {
+    } else if (mInputWindowCommands.empty()) {
         return;
     }
+
     BackgroundExecutor::getInstance().sendCallbacks({[updateWindowInfo,
                                                       windowInfos = std::move(windowInfos),
                                                       displayInfos = std::move(displayInfos),
@@ -3268,12 +3272,17 @@
                                                       inputFlinger = mInputFlinger, this]() {
         ATRACE_NAME("BackgroundExecutor::updateInputFlinger");
         if (updateWindowInfo) {
-            mWindowInfosListenerInvoker->windowInfosChanged(windowInfos, displayInfos,
-                                                            inputWindowCommands.syncInputWindows);
-        } else if (inputWindowCommands.syncInputWindows) {
-            // If the caller requested to sync input windows, but there are no
-            // changes to input windows, notify immediately.
-            windowInfosReported();
+            mWindowInfosListenerInvoker
+                    ->windowInfosChanged(windowInfos, displayInfos,
+                                         inputWindowCommands.windowInfosReportedListeners);
+        } else {
+            // If there are listeners but no changes to input windows, call the listeners
+            // immediately.
+            for (const auto& listener : inputWindowCommands.windowInfosReportedListeners) {
+                if (IInterface::asBinder(listener)->isBinderAlive()) {
+                    listener->onWindowInfosReported();
+                }
+            }
         }
         for (const auto& focusRequest : inputWindowCommands.focusRequests) {
             inputFlinger->setFocusedWindow(focusRequest);
@@ -4096,11 +4105,9 @@
     Mutex::Autolock lock(mQueueLock);
 
     // Generate a CountDownLatch pending state if this is a synchronous transaction.
-    if ((state.flags & eSynchronous) || state.inputWindowCommands.syncInputWindows) {
-        state.transactionCommittedSignal = std::make_shared<CountDownLatch>(
-                (state.inputWindowCommands.syncInputWindows
-                         ? (CountDownLatch::eSyncInputWindows | CountDownLatch::eSyncTransaction)
-                         : CountDownLatch::eSyncTransaction));
+    if (state.flags & eSynchronous) {
+        state.transactionCommittedSignal =
+                std::make_shared<CountDownLatch>(CountDownLatch::eSyncTransaction);
     }
 
     mTransactionQueue.emplace_back(state);
@@ -4558,6 +4565,14 @@
     if (what & layer_state_t::eShadowRadiusChanged) {
         if (layer->setShadowRadius(s.shadowRadius)) flags |= eTraversalNeeded;
     }
+    if (what & layer_state_t::eDefaultFrameRateCompatibilityChanged) {
+        const auto compatibility =
+                Layer::FrameRate::convertCompatibility(s.defaultFrameRateCompatibility);
+
+        if (layer->setDefaultFrameRateCompatibility(compatibility)) {
+            flags |= eTraversalNeeded;
+        }
+    }
     if (what & layer_state_t::eFrameRateSelectionPriority) {
         if (layer->setFrameRateSelectionPriority(s.frameRateSelectionPriority)) {
             flags |= eTraversalNeeded;
@@ -4608,7 +4623,7 @@
     if (what & layer_state_t::eDropInputModeChanged) {
         if (layer->setDropInputMode(s.dropInputMode)) {
             flags |= eTraversalNeeded;
-            mInputInfoChanged = true;
+            mUpdateInputInfo = true;
         }
     }
     // This has to happen after we reparent children because when we reparent to null we remove
@@ -4915,6 +4930,9 @@
         // Update display while dozing
         getHwComposer().setPowerMode(displayId, mode);
         if (isDisplayActiveLocked(display) && currentMode == hal::PowerMode::DOZE_SUSPEND) {
+            ALOGI("Force repainting for DOZE_SUSPEND -> DOZE or ON.");
+            mVisibleRegionsDirty = true;
+            scheduleRepaint();
             mScheduler->onScreenAcquired(mAppConnectionHandle);
             mScheduler->resyncToHardwareVsync(true, refreshRate);
         }
@@ -6798,11 +6816,6 @@
     return future;
 }
 
-void SurfaceFlinger::windowInfosReported() {
-    Mutex::Autolock _l(mStateLock);
-    signalSynchronousTransactions(CountDownLatch::eSyncInputWindows);
-}
-
 // ---------------------------------------------------------------------------
 
 void SurfaceFlinger::State::traverse(const LayerVector::Visitor& visitor) const {
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 5182ed8..bd4330f 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -333,7 +333,6 @@
     // If set, disables reusing client composition buffers. This can be set by
     // debug.sf.disable_client_composition_cache
     bool mDisableClientCompositionCache = false;
-    void windowInfosReported();
 
     // Disables expensive rendering for all displays
     // This is scheduled on the main thread
@@ -378,7 +377,6 @@
     friend class FpsReporter;
     friend class TunnelModeEnabledReporter;
     friend class Layer;
-    friend class MonitoredProducer;
     friend class RefreshRateOverlay;
     friend class RegionSamplingThread;
     friend class LayerRenderArea;
@@ -1198,7 +1196,7 @@
     // Set during transaction application stage to track if the input info or children
     // for a layer has changed.
     // TODO: Also move visibleRegions over to a boolean system.
-    bool mInputInfoChanged = false;
+    bool mUpdateInputInfo = false;
     bool mSomeChildrenChanged;
     bool mSomeDataspaceChanged = false;
     bool mForceTransactionDisplayChange = false;
diff --git a/services/surfaceflinger/SurfaceFlingerDefaultFactory.cpp b/services/surfaceflinger/SurfaceFlingerDefaultFactory.cpp
index 39a5d0f..2399a39 100644
--- a/services/surfaceflinger/SurfaceFlingerDefaultFactory.cpp
+++ b/services/surfaceflinger/SurfaceFlingerDefaultFactory.cpp
@@ -22,14 +22,12 @@
 #include <cutils/properties.h>
 #include <ui/GraphicBuffer.h>
 
-#include "BufferLayerConsumer.h"
 #include "BufferStateLayer.h"
 #include "ContainerLayer.h"
 #include "DisplayDevice.h"
 #include "EffectLayer.h"
 #include "FrameTracer/FrameTracer.h"
 #include "Layer.h"
-#include "MonitoredProducer.h"
 #include "NativeWindowSurface.h"
 #include "StartPropertySetThread.h"
 #include "SurfaceFlingerDefaultFactory.h"
@@ -83,18 +81,6 @@
     BufferQueue::createBufferQueue(outProducer, outConsumer, consumerIsSurfaceFlinger);
 }
 
-sp<IGraphicBufferProducer> DefaultFactory::createMonitoredProducer(
-        const sp<IGraphicBufferProducer>& producer, const sp<SurfaceFlinger>& flinger,
-        const wp<Layer>& layer) {
-    return new MonitoredProducer(producer, flinger, layer);
-}
-
-sp<BufferLayerConsumer> DefaultFactory::createBufferLayerConsumer(
-        const sp<IGraphicBufferConsumer>& consumer, renderengine::RenderEngine& renderEngine,
-        uint32_t textureName, Layer* layer) {
-    return new BufferLayerConsumer(consumer, renderEngine, textureName, layer);
-}
-
 std::unique_ptr<surfaceflinger::NativeWindowSurface> DefaultFactory::createNativeWindowSurface(
         const sp<IGraphicBufferProducer>& producer) {
     return surfaceflinger::impl::createNativeWindowSurface(producer);
diff --git a/services/surfaceflinger/SurfaceFlingerDefaultFactory.h b/services/surfaceflinger/SurfaceFlingerDefaultFactory.h
index 173ca81..4000e09 100644
--- a/services/surfaceflinger/SurfaceFlingerDefaultFactory.h
+++ b/services/surfaceflinger/SurfaceFlingerDefaultFactory.h
@@ -38,12 +38,6 @@
     void createBufferQueue(sp<IGraphicBufferProducer>* outProducer,
                            sp<IGraphicBufferConsumer>* outConsumer,
                            bool consumerIsSurfaceFlinger) override;
-    sp<IGraphicBufferProducer> createMonitoredProducer(const sp<IGraphicBufferProducer>&,
-                                                       const sp<SurfaceFlinger>&,
-                                                       const wp<Layer>&) override;
-    sp<BufferLayerConsumer> createBufferLayerConsumer(const sp<IGraphicBufferConsumer>&,
-                                                      renderengine::RenderEngine&, uint32_t tex,
-                                                      Layer*) override;
     std::unique_ptr<surfaceflinger::NativeWindowSurface> createNativeWindowSurface(
             const sp<IGraphicBufferProducer>&) override;
     std::unique_ptr<compositionengine::CompositionEngine> createCompositionEngine() override;
diff --git a/services/surfaceflinger/SurfaceFlingerFactory.h b/services/surfaceflinger/SurfaceFlingerFactory.h
index e117e96..77a75c4 100644
--- a/services/surfaceflinger/SurfaceFlingerFactory.h
+++ b/services/surfaceflinger/SurfaceFlingerFactory.h
@@ -85,12 +85,6 @@
     virtual void createBufferQueue(sp<IGraphicBufferProducer>* outProducer,
                                    sp<IGraphicBufferConsumer>* outConsumer,
                                    bool consumerIsSurfaceFlinger) = 0;
-    virtual sp<IGraphicBufferProducer> createMonitoredProducer(const sp<IGraphicBufferProducer>&,
-                                                               const sp<SurfaceFlinger>&,
-                                                               const wp<Layer>&) = 0;
-    virtual sp<BufferLayerConsumer> createBufferLayerConsumer(const sp<IGraphicBufferConsumer>&,
-                                                              renderengine::RenderEngine&,
-                                                              uint32_t tex, Layer*) = 0;
 
     virtual std::unique_ptr<surfaceflinger::NativeWindowSurface> createNativeWindowSurface(
             const sp<IGraphicBufferProducer>&) = 0;
diff --git a/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.cpp b/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.cpp
index 5e20b74..c4b1b0f 100644
--- a/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.cpp
+++ b/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.cpp
@@ -71,19 +71,6 @@
                            sp<IGraphicBufferConsumer>* /* outConsumer */,
                            bool /* consumerIsSurfaceFlinger */) override {}
 
-    sp<IGraphicBufferProducer> createMonitoredProducer(
-            const sp<IGraphicBufferProducer>& /* producer */,
-            const sp<SurfaceFlinger>& /* flinger */, const wp<Layer>& /* layer */) override {
-        return nullptr;
-    }
-
-    sp<BufferLayerConsumer> createBufferLayerConsumer(
-            const sp<IGraphicBufferConsumer>& /* consumer */,
-            renderengine::RenderEngine& /* renderEngine */, uint32_t /* textureName */,
-            Layer* /* layer */) override {
-        return nullptr;
-    }
-
     std::unique_ptr<surfaceflinger::NativeWindowSurface> createNativeWindowSurface(
             const sp<IGraphicBufferProducer>& /* producer */) override {
         return nullptr;
diff --git a/services/surfaceflinger/TransactionState.h b/services/surfaceflinger/TransactionState.h
index 900d566..bbfeac1 100644
--- a/services/surfaceflinger/TransactionState.h
+++ b/services/surfaceflinger/TransactionState.h
@@ -106,7 +106,6 @@
 public:
     enum {
         eSyncTransaction = 1 << 0,
-        eSyncInputWindows = 1 << 1,
     };
     explicit CountDownLatch(uint32_t flags) : mFlags(flags) {}
 
diff --git a/services/surfaceflinger/WindowInfosListenerInvoker.cpp b/services/surfaceflinger/WindowInfosListenerInvoker.cpp
index 30b9d8f..cc33001 100644
--- a/services/surfaceflinger/WindowInfosListenerInvoker.cpp
+++ b/services/surfaceflinger/WindowInfosListenerInvoker.cpp
@@ -26,21 +26,39 @@
 using gui::IWindowInfosListener;
 using gui::WindowInfo;
 
-struct WindowInfosListenerInvoker::WindowInfosReportedListener
-      : gui::BnWindowInfosReportedListener {
-    explicit WindowInfosReportedListener(WindowInfosListenerInvoker& invoker) : mInvoker(invoker) {}
+struct WindowInfosListenerInvoker::WindowInfosReportedListener : gui::BnWindowInfosReportedListener,
+                                                                 DeathRecipient {
+    explicit WindowInfosReportedListener(
+            size_t callbackCount,
+            const std::unordered_set<sp<gui::IWindowInfosReportedListener>,
+                                     SpHash<gui::IWindowInfosReportedListener>>&
+                    windowInfosReportedListeners)
+          : mCallbacksPending(callbackCount),
+            mWindowInfosReportedListeners(windowInfosReportedListeners) {}
 
     binder::Status onWindowInfosReported() override {
-        mInvoker.windowInfosReported();
+        // TODO(b/222421815) There could potentially be callbacks that we don't need to wait for
+        // before calling the WindowInfosReportedListeners coming from InputWindowCommands. Filter
+        // the list of callbacks down to those from system server.
+        if (--mCallbacksPending == 0) {
+            for (const auto& listener : mWindowInfosReportedListeners) {
+                sp<IBinder> asBinder = IInterface::asBinder(listener);
+                if (asBinder->isBinderAlive()) {
+                    listener->onWindowInfosReported();
+                }
+            }
+        }
         return binder::Status::ok();
     }
 
-    WindowInfosListenerInvoker& mInvoker;
-};
+    void binderDied(const wp<IBinder>&) { onWindowInfosReported(); }
 
-WindowInfosListenerInvoker::WindowInfosListenerInvoker(SurfaceFlinger& flinger)
-      : mFlinger(flinger),
-        mWindowInfosReportedListener(sp<WindowInfosReportedListener>::make(*this)) {}
+private:
+    std::atomic<size_t> mCallbacksPending;
+    std::unordered_set<sp<gui::IWindowInfosReportedListener>,
+                       SpHash<gui::IWindowInfosReportedListener>>
+            mWindowInfosReportedListeners;
+};
 
 void WindowInfosListenerInvoker::addWindowInfosListener(sp<IWindowInfosListener> listener) {
     sp<IBinder> asBinder = IInterface::asBinder(listener);
@@ -64,9 +82,11 @@
     mWindowInfosListeners.erase(who);
 }
 
-void WindowInfosListenerInvoker::windowInfosChanged(const std::vector<WindowInfo>& windowInfos,
-                                                    const std::vector<DisplayInfo>& displayInfos,
-                                                    bool shouldSync) {
+void WindowInfosListenerInvoker::windowInfosChanged(
+        const std::vector<WindowInfo>& windowInfos, const std::vector<DisplayInfo>& displayInfos,
+        const std::unordered_set<sp<gui::IWindowInfosReportedListener>,
+                                 SpHash<gui::IWindowInfosReportedListener>>&
+                windowInfosReportedListeners) {
     ftl::SmallVector<const sp<IWindowInfosListener>, kStaticCapacity> windowInfosListeners;
     {
         std::scoped_lock lock(mListenersMutex);
@@ -75,18 +95,25 @@
         }
     }
 
-    mCallbacksPending = windowInfosListeners.size();
-
+    auto windowInfosReportedListener = windowInfosReportedListeners.empty()
+            ? nullptr
+            : sp<WindowInfosReportedListener>::make(windowInfosListeners.size(),
+                                                    windowInfosReportedListeners);
     for (const auto& listener : windowInfosListeners) {
-        listener->onWindowInfosChanged(windowInfos, displayInfos,
-                                       shouldSync ? mWindowInfosReportedListener : nullptr);
-    }
-}
+        sp<IBinder> asBinder = IInterface::asBinder(listener);
 
-void WindowInfosListenerInvoker::windowInfosReported() {
-    mCallbacksPending--;
-    if (mCallbacksPending == 0) {
-        mFlinger.windowInfosReported();
+        // linkToDeath is used here to ensure that the windowInfosReportedListeners
+        // are called even if one of the windowInfosListeners dies before
+        // calling onWindowInfosReported.
+        if (windowInfosReportedListener) {
+            asBinder->linkToDeath(windowInfosReportedListener);
+        }
+
+        auto status = listener->onWindowInfosChanged(windowInfos, displayInfos,
+                                                     windowInfosReportedListener);
+        if (!status.isOk()) {
+            windowInfosReportedListener->onWindowInfosReported();
+        }
     }
 }
 
diff --git a/services/surfaceflinger/WindowInfosListenerInvoker.h b/services/surfaceflinger/WindowInfosListenerInvoker.h
index d8d8d0f..a1d66a1 100644
--- a/services/surfaceflinger/WindowInfosListenerInvoker.h
+++ b/services/surfaceflinger/WindowInfosListenerInvoker.h
@@ -29,22 +29,21 @@
 
 class WindowInfosListenerInvoker : public IBinder::DeathRecipient {
 public:
-    explicit WindowInfosListenerInvoker(SurfaceFlinger&);
-
     void addWindowInfosListener(sp<gui::IWindowInfosListener>);
     void removeWindowInfosListener(const sp<gui::IWindowInfosListener>& windowInfosListener);
 
     void windowInfosChanged(const std::vector<gui::WindowInfo>&,
-                            const std::vector<gui::DisplayInfo>&, bool shouldSync);
+                            const std::vector<gui::DisplayInfo>&,
+                            const std::unordered_set<sp<gui::IWindowInfosReportedListener>,
+                                                     SpHash<gui::IWindowInfosReportedListener>>&
+                                    windowInfosReportedListeners);
 
 protected:
     void binderDied(const wp<IBinder>& who) override;
 
 private:
     struct WindowInfosReportedListener;
-    void windowInfosReported();
 
-    SurfaceFlinger& mFlinger;
     std::mutex mListenersMutex;
 
     static constexpr size_t kStaticCapacity = 3;
@@ -52,7 +51,6 @@
             mWindowInfosListeners GUARDED_BY(mListenersMutex);
 
     sp<gui::IWindowInfosReportedListener> mWindowInfosReportedListener;
-    std::atomic<size_t> mCallbacksPending{0};
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzer.cpp b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzer.cpp
index f25043c..8e60247 100644
--- a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzer.cpp
+++ b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzer.cpp
@@ -151,7 +151,6 @@
     sp<IBinder> handle = defaultServiceManager()->checkService(
             String16(mFdp.ConsumeRandomLengthString().c_str()));
     mFlinger->fromHandle(handle);
-    mFlinger->windowInfosReported();
     mFlinger->disableExpensiveRendering();
 }
 
diff --git a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
index 456a498..60c46a9 100644
--- a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
+++ b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
@@ -333,18 +333,6 @@
         mCreateBufferQueue(outProducer, outConsumer, consumerIsSurfaceFlinger);
     }
 
-    sp<IGraphicBufferProducer> createMonitoredProducer(const sp<IGraphicBufferProducer> &producer,
-                                                       const sp<SurfaceFlinger> &flinger,
-                                                       const wp<Layer> &layer) override {
-        return new MonitoredProducer(producer, flinger, layer);
-    }
-
-    sp<BufferLayerConsumer> createBufferLayerConsumer(const sp<IGraphicBufferConsumer> &consumer,
-                                                      renderengine::RenderEngine &renderEngine,
-                                                      uint32_t textureName, Layer *layer) override {
-        return new BufferLayerConsumer(consumer, renderEngine, textureName, layer);
-    }
-
     std::unique_ptr<surfaceflinger::NativeWindowSurface> createNativeWindowSurface(
             const sp<IGraphicBufferProducer> &producer) override {
         if (!mCreateNativeWindowSurface) return nullptr;
diff --git a/services/surfaceflinger/fuzzer/surfaceflinger_layer_fuzzer.cpp b/services/surfaceflinger/fuzzer/surfaceflinger_layer_fuzzer.cpp
index 4aef017..62a7997 100644
--- a/services/surfaceflinger/fuzzer/surfaceflinger_layer_fuzzer.cpp
+++ b/services/surfaceflinger/fuzzer/surfaceflinger_layer_fuzzer.cpp
@@ -18,9 +18,7 @@
 #include <Client.h>
 #include <DisplayDevice.h>
 #include <EffectLayer.h>
-#include <LayerRejecter.h>
 #include <LayerRenderArea.h>
-#include <MonitoredProducer.h>
 #include <ftl/future.h>
 #include <fuzzer/FuzzedDataProvider.h>
 #include <gui/IProducerListener.h>
diff --git a/services/surfaceflinger/tests/unittests/CompositionTest.cpp b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
index 19eaa19..f6ebfe5 100644
--- a/services/surfaceflinger/tests/unittests/CompositionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
@@ -629,7 +629,8 @@
                     EXPECT_EQ(false, layer.source.buffer.isY410BT2020);
                     EXPECT_EQ(true, layer.source.buffer.usePremultipliedAlpha);
                     EXPECT_EQ(false, layer.source.buffer.isOpaque);
-                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius);
+                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius.x);
+                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius.y);
                     EXPECT_EQ(ui::Dataspace::UNKNOWN, layer.sourceDataspace);
                     EXPECT_EQ(LayerProperties::COLOR[3], layer.alpha);
                     return resultFuture;
@@ -679,7 +680,8 @@
                     EXPECT_EQ(half3(LayerProperties::COLOR[0], LayerProperties::COLOR[1],
                                     LayerProperties::COLOR[2]),
                               layer.source.solidColor);
-                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius);
+                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius.x);
+                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius.y);
                     EXPECT_EQ(ui::Dataspace::UNKNOWN, layer.sourceDataspace);
                     EXPECT_EQ(LayerProperties::COLOR[3], layer.alpha);
                     return resultFuture;
@@ -757,7 +759,8 @@
                     const renderengine::LayerSettings layer = layerSettings.back();
                     EXPECT_THAT(layer.source.buffer.buffer, IsNull());
                     EXPECT_EQ(half3(0.0f, 0.0f, 0.0f), layer.source.solidColor);
-                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius);
+                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius.x);
+                    EXPECT_EQ(0.0, layer.geometry.roundedCornersRadius.y);
                     EXPECT_EQ(ui::Dataspace::UNKNOWN, layer.sourceDataspace);
                     EXPECT_EQ(1.0f, layer.alpha);
                     return resultFuture;
diff --git a/services/surfaceflinger/tests/unittests/FrameTimelineTest.cpp b/services/surfaceflinger/tests/unittests/FrameTimelineTest.cpp
index bc379f2..756db8a 100644
--- a/services/surfaceflinger/tests/unittests/FrameTimelineTest.cpp
+++ b/services/surfaceflinger/tests/unittests/FrameTimelineTest.cpp
@@ -2342,4 +2342,38 @@
     EXPECT_EQ(mFrameTimeline->computeFps({sLayerIdOne}), 5.0f);
 }
 
+TEST_F(FrameTimelineTest, getMinTime) {
+    // Use SurfaceFrame::getBaseTime to test the getMinTime.
+    FrameTimelineInfo ftInfo;
+
+    // Valid prediction state test.
+    ftInfo.vsyncId = 0L;
+    mTokenManager->generateTokenForPredictions({10});
+    auto surfaceFrame =
+            mFrameTimeline->createSurfaceFrameForToken(ftInfo, sPidOne, sUidOne, sLayerIdOne,
+                                                       sLayerNameOne, sLayerNameOne,
+                                                       /*isBuffer*/ true, sGameMode);
+    ASSERT_EQ(surfaceFrame->getBaseTime(), 10);
+
+    // Test prediction state which is not valid.
+    ftInfo.vsyncId = FrameTimelineInfo::INVALID_VSYNC_ID;
+    surfaceFrame = mFrameTimeline->createSurfaceFrameForToken(ftInfo, sPidOne, sUidOne, sLayerIdOne,
+                                                              sLayerNameOne, sLayerNameOne,
+                                                              /*isBuffer*/ true, sGameMode);
+    // Start time test.
+    surfaceFrame->setActualStartTime(200);
+    ASSERT_EQ(surfaceFrame->getBaseTime(), 200);
+
+    // End time test.
+    surfaceFrame->setAcquireFenceTime(100);
+    ASSERT_EQ(surfaceFrame->getBaseTime(), 100);
+
+    // Present time test.
+    auto presentFence = fenceFactory.createFenceTimeForTest(Fence::NO_FENCE);
+    surfaceFrame->setPresentState(SurfaceFrame::PresentState::Presented);
+    mFrameTimeline->addSurfaceFrame(surfaceFrame);
+    presentFence->signalForTest(std::chrono::nanoseconds(50ns).count());
+    mFrameTimeline->setSfPresent(50, presentFence);
+    ASSERT_EQ(surfaceFrame->getBaseTime(), 50);
+}
 } // namespace android::frametimeline
diff --git a/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp b/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
index 17511cd..972198c 100644
--- a/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
@@ -141,6 +141,54 @@
 
 namespace {
 
+TEST_F(LayerHistoryTest, singleLayerNoVoteDefaultCompatibility) {
+    const auto layer = createLayer();
+    EXPECT_CALL(*layer, isVisible()).WillRepeatedly(Return(true));
+    EXPECT_CALL(*layer, getFrameRateForLayerTree()).WillRepeatedly(Return(Layer::FrameRate()));
+    EXPECT_CALL(*layer, getDefaultFrameRateCompatibility())
+            .WillOnce(Return(LayerInfo::FrameRateCompatibility::NoVote));
+
+    EXPECT_EQ(1, layerCount());
+    EXPECT_EQ(0, activeLayerCount());
+
+    nsecs_t time = systemTime();
+
+    // No layers returned if no layers are active.
+    EXPECT_TRUE(summarizeLayerHistory(time).empty());
+    EXPECT_EQ(0, activeLayerCount());
+
+    history().record(layer.get(), 0, time, LayerHistory::LayerUpdateType::Buffer);
+    history().setDefaultFrameRateCompatibility(layer.get(), true /* contentDetectionEnabled */);
+
+    EXPECT_TRUE(summarizeLayerHistory(time).empty());
+    EXPECT_EQ(1, activeLayerCount());
+}
+
+TEST_F(LayerHistoryTest, singleLayerMinVoteDefaultCompatibility) {
+    const auto layer = createLayer();
+    EXPECT_CALL(*layer, isVisible()).WillRepeatedly(Return(true));
+    EXPECT_CALL(*layer, getFrameRateForLayerTree()).WillRepeatedly(Return(Layer::FrameRate()));
+    EXPECT_CALL(*layer, getDefaultFrameRateCompatibility())
+            .WillOnce(Return(LayerInfo::FrameRateCompatibility::Min));
+
+    EXPECT_EQ(1, layerCount());
+    EXPECT_EQ(0, activeLayerCount());
+
+    nsecs_t time = systemTime();
+
+    EXPECT_TRUE(summarizeLayerHistory(time).empty());
+    EXPECT_EQ(0, activeLayerCount());
+
+    history().record(layer.get(), 0, time, LayerHistory::LayerUpdateType::Buffer);
+    history().setDefaultFrameRateCompatibility(layer.get(), true /* contentDetectionEnabled */);
+
+    auto summary = summarizeLayerHistory(time);
+    ASSERT_EQ(1, summarizeLayerHistory(time).size());
+
+    EXPECT_EQ(LayerHistory::LayerVoteType::Min, summarizeLayerHistory(time)[0].vote);
+    EXPECT_EQ(1, activeLayerCount());
+}
+
 TEST_F(LayerHistoryTest, oneLayer) {
     const auto layer = createLayer();
     EXPECT_CALL(*layer, isVisible()).WillRepeatedly(Return(true));
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 3a05e2f..e8380eb 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -111,18 +111,6 @@
         mCreateBufferQueue(outProducer, outConsumer, consumerIsSurfaceFlinger);
     }
 
-    sp<IGraphicBufferProducer> createMonitoredProducer(const sp<IGraphicBufferProducer>& producer,
-                                                       const sp<SurfaceFlinger>& flinger,
-                                                       const wp<Layer>& layer) override {
-        return new MonitoredProducer(producer, flinger, layer);
-    }
-
-    sp<BufferLayerConsumer> createBufferLayerConsumer(const sp<IGraphicBufferConsumer>& consumer,
-                                                      renderengine::RenderEngine& renderEngine,
-                                                      uint32_t textureName, Layer* layer) override {
-        return new BufferLayerConsumer(consumer, renderEngine, textureName, layer);
-    }
-
     std::unique_ptr<surfaceflinger::NativeWindowSurface> createNativeWindowSurface(
             const sp<IGraphicBufferProducer>& producer) override {
         if (!mCreateNativeWindowSurface) return nullptr;
diff --git a/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp b/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
index ded7531..84f1170 100644
--- a/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
+++ b/services/surfaceflinger/tests/unittests/TransactionApplicationTest.cpp
@@ -107,22 +107,20 @@
         EXPECT_EQ(info.desiredPresentTime, state.desiredPresentTime);
     }
 
-    void setupSingle(TransactionInfo& transaction, uint32_t flags, bool syncInputWindows,
-                     int64_t desiredPresentTime, bool isAutoTimestamp,
-                     const FrameTimelineInfo& frameTimelineInfo) {
+    void setupSingle(TransactionInfo& transaction, uint32_t flags, int64_t desiredPresentTime,
+                     bool isAutoTimestamp, const FrameTimelineInfo& frameTimelineInfo) {
         mTransactionNumber++;
         transaction.flags |= flags; // ISurfaceComposer::eSynchronous;
-        transaction.inputWindowCommands.syncInputWindows = syncInputWindows;
         transaction.desiredPresentTime = desiredPresentTime;
         transaction.isAutoTimestamp = isAutoTimestamp;
         transaction.frameTimelineInfo = frameTimelineInfo;
     }
 
-    void NotPlacedOnTransactionQueue(uint32_t flags, bool syncInputWindows) {
+    void NotPlacedOnTransactionQueue(uint32_t flags) {
         ASSERT_EQ(0u, mFlinger.getTransactionQueue().size());
         EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(1);
         TransactionInfo transaction;
-        setupSingle(transaction, flags, syncInputWindows,
+        setupSingle(transaction, flags,
                     /*desiredPresentTime*/ systemTime(), /*isAutoTimestamp*/ true,
                     FrameTimelineInfo{});
         nsecs_t applicationTime = systemTime();
@@ -133,12 +131,10 @@
                                      transaction.uncacheBuffer, mHasListenerCallbacks, mCallbacks,
                                      transaction.id);
 
-        // If transaction is synchronous or syncs input windows, SF
-        // applyTransactionState should time out (5s) wating for SF to commit
-        // the transaction or to receive a signal that syncInputWindows has
-        // completed.  If this is animation, it should not time out waiting.
+        // If transaction is synchronous, SF applyTransactionState should time out (5s) wating for
+        // SF to commit the transaction. If this is animation, it should not time out waiting.
         nsecs_t returnedTime = systemTime();
-        if (flags & ISurfaceComposer::eSynchronous || syncInputWindows) {
+        if (flags & ISurfaceComposer::eSynchronous) {
             EXPECT_GE(returnedTime, applicationTime + mFlinger.getAnimationTransactionTimeout());
         } else {
             EXPECT_LE(returnedTime, applicationTime + mFlinger.getAnimationTransactionTimeout());
@@ -148,7 +144,7 @@
         EXPECT_EQ(1u, transactionQueue.size());
     }
 
-    void PlaceOnTransactionQueue(uint32_t flags, bool syncInputWindows) {
+    void PlaceOnTransactionQueue(uint32_t flags) {
         ASSERT_EQ(0u, mFlinger.getTransactionQueue().size());
         EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(1);
 
@@ -156,8 +152,8 @@
         // but afterwards it will look like the desired present time has passed
         nsecs_t time = systemTime();
         TransactionInfo transaction;
-        setupSingle(transaction, flags, syncInputWindows,
-                    /*desiredPresentTime*/ time + s2ns(1), false, FrameTimelineInfo{});
+        setupSingle(transaction, flags, /*desiredPresentTime*/ time + s2ns(1), false,
+                    FrameTimelineInfo{});
         nsecs_t applicationSentTime = systemTime();
         mFlinger.setTransactionState(transaction.frameTimelineInfo, transaction.states,
                                      transaction.displays, transaction.flags,
@@ -167,7 +163,7 @@
                                      transaction.id);
 
         nsecs_t returnedTime = systemTime();
-        if ((flags & ISurfaceComposer::eSynchronous) || syncInputWindows) {
+        if (flags & ISurfaceComposer::eSynchronous) {
             EXPECT_GE(systemTime(),
                       applicationSentTime + mFlinger.getAnimationTransactionTimeout());
         } else {
@@ -179,25 +175,21 @@
         EXPECT_EQ(1u, transactionQueue.size());
     }
 
-    void BlockedByPriorTransaction(uint32_t flags, bool syncInputWindows) {
+    void BlockedByPriorTransaction(uint32_t flags) {
         ASSERT_EQ(0u, mFlinger.getTransactionQueue().size());
         nsecs_t time = systemTime();
-        if (!syncInputWindows) {
-            EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(2);
-        } else {
-            EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(1);
-        }
+        EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(2);
+
         // transaction that should go on the pending thread
         TransactionInfo transactionA;
-        setupSingle(transactionA, /*flags*/ 0, /*syncInputWindows*/ false,
-                    /*desiredPresentTime*/ time + s2ns(1), false, FrameTimelineInfo{});
+        setupSingle(transactionA, /*flags*/ 0, /*desiredPresentTime*/ time + s2ns(1), false,
+                    FrameTimelineInfo{});
 
         // transaction that would not have gone on the pending thread if not
         // blocked
         TransactionInfo transactionB;
-        setupSingle(transactionB, flags, syncInputWindows,
-                    /*desiredPresentTime*/ systemTime(), /*isAutoTimestamp*/ true,
-                    FrameTimelineInfo{});
+        setupSingle(transactionB, flags, /*desiredPresentTime*/ systemTime(),
+                    /*isAutoTimestamp*/ true, FrameTimelineInfo{});
 
         nsecs_t applicationSentTime = systemTime();
         mFlinger.setTransactionState(transactionA.frameTimelineInfo, transactionA.states,
@@ -226,8 +218,7 @@
         // if this is an animation, this thread should be blocked for 5s
         // in setTransactionState waiting for transactionA to flush.  Otherwise,
         // the transaction should be placed on the pending queue
-        if (flags & (ISurfaceComposer::eSynchronous) ||
-            syncInputWindows) {
+        if (flags & ISurfaceComposer::eSynchronous) {
             EXPECT_GE(systemTime(),
                       applicationSentTime + mFlinger.getAnimationTransactionTimeout());
         } else {
@@ -253,8 +244,8 @@
     EXPECT_CALL(*mFlinger.scheduler(), scheduleFrame()).Times(1);
 
     TransactionInfo transactionA; // transaction to go on pending queue
-    setupSingle(transactionA, /*flags*/ 0, /*syncInputWindows*/ false,
-                /*desiredPresentTime*/ s2ns(1), false, FrameTimelineInfo{});
+    setupSingle(transactionA, /*flags*/ 0, /*desiredPresentTime*/ s2ns(1), false,
+                FrameTimelineInfo{});
     mFlinger.setTransactionState(transactionA.frameTimelineInfo, transactionA.states,
                                  transactionA.displays, transactionA.flags, transactionA.applyToken,
                                  transactionA.inputWindowCommands, transactionA.desiredPresentTime,
@@ -285,31 +276,23 @@
 }
 
 TEST_F(TransactionApplicationTest, NotPlacedOnTransactionQueue_Synchronous) {
-    NotPlacedOnTransactionQueue(ISurfaceComposer::eSynchronous, /*syncInputWindows*/ false);
+    NotPlacedOnTransactionQueue(ISurfaceComposer::eSynchronous);
 }
 
 TEST_F(TransactionApplicationTest, NotPlacedOnTransactionQueue_SyncInputWindows) {
-    NotPlacedOnTransactionQueue(/*flags*/ 0, /*syncInputWindows*/ true);
+    NotPlacedOnTransactionQueue(/*flags*/ 0);
 }
 
 TEST_F(TransactionApplicationTest, PlaceOnTransactionQueue_Synchronous) {
-    PlaceOnTransactionQueue(ISurfaceComposer::eSynchronous, /*syncInputWindows*/ false);
+    PlaceOnTransactionQueue(ISurfaceComposer::eSynchronous);
 }
 
 TEST_F(TransactionApplicationTest, PlaceOnTransactionQueue_SyncInputWindows) {
-    PlaceOnTransactionQueue(/*flags*/ 0, /*syncInputWindows*/ true);
+    PlaceOnTransactionQueue(/*flags*/ 0);
 }
 
 TEST_F(TransactionApplicationTest, BlockWithPriorTransaction_Synchronous) {
-    BlockedByPriorTransaction(ISurfaceComposer::eSynchronous, /*syncInputWindows*/ false);
-}
-
-TEST_F(TransactionApplicationTest, BlockWithPriorTransaction_Animation) {
-    BlockedByPriorTransaction(ISurfaceComposer::eSynchronous, /*syncInputWindows*/ false);
-}
-
-TEST_F(TransactionApplicationTest, BlockWithPriorTransaction_SyncInputWindows) {
-    BlockedByPriorTransaction(/*flags*/ 0, /*syncInputWindows*/ true);
+    BlockedByPriorTransaction(ISurfaceComposer::eSynchronous);
 }
 
 TEST_F(TransactionApplicationTest, FromHandle) {
@@ -359,13 +342,11 @@
                                           const std::vector<ComposerState>& states) {
         TransactionInfo transaction;
         const uint32_t kFlags = ISurfaceComposer::eSynchronous;
-        const bool kSyncInputWindows = false;
         const nsecs_t kDesiredPresentTime = systemTime();
         const bool kIsAutoTimestamp = true;
         const auto kFrameTimelineInfo = FrameTimelineInfo{};
 
-        setupSingle(transaction, kFlags, kSyncInputWindows, kDesiredPresentTime, kIsAutoTimestamp,
-                    kFrameTimelineInfo);
+        setupSingle(transaction, kFlags, kDesiredPresentTime, kIsAutoTimestamp, kFrameTimelineInfo);
         transaction.applyToken = applyToken;
         for (const auto& state : states) {
             transaction.states.push_back(state);
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerAdvisor.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerAdvisor.h
index e347883..d6dca45 100644
--- a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerAdvisor.h
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerAdvisor.h
@@ -53,6 +53,7 @@
     MOCK_METHOD(void, setRequiresClientComposition,
                 (DisplayId displayId, bool requiresClientComposition), (override));
     MOCK_METHOD(void, setExpectedPresentTime, (nsecs_t expectedPresentTime), (override));
+    MOCK_METHOD(void, setPresentFenceTime, (nsecs_t presentFenceTime), (override));
     MOCK_METHOD(void, setHwcPresentDelayedTime,
                 (DisplayId displayId,
                  std::chrono::steady_clock::time_point earliestFrameStartTime));
diff --git a/services/surfaceflinger/tests/unittests/mock/MockLayer.h b/services/surfaceflinger/tests/unittests/mock/MockLayer.h
index 0840a2f..d086d79 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockLayer.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockLayer.h
@@ -25,7 +25,10 @@
 class MockLayer : public Layer {
 public:
     MockLayer(SurfaceFlinger* flinger, std::string name)
-          : Layer(LayerCreationArgs(flinger, nullptr, std::move(name), 0, {})) {}
+          : Layer(LayerCreationArgs(flinger, nullptr, std::move(name), 0, {})) {
+        EXPECT_CALL(*this, getDefaultFrameRateCompatibility())
+                .WillOnce(testing::Return(scheduler::LayerInfo::FrameRateCompatibility::Default));
+    }
     explicit MockLayer(SurfaceFlinger* flinger) : MockLayer(flinger, "TestLayer") {}
 
     MOCK_CONST_METHOD0(getType, const char*());
@@ -33,6 +36,8 @@
     MOCK_CONST_METHOD0(isVisible, bool());
     MOCK_METHOD0(createClone, sp<Layer>());
     MOCK_CONST_METHOD0(getFrameRateForLayerTree, FrameRate());
+    MOCK_CONST_METHOD0(getDefaultFrameRateCompatibility,
+                       scheduler::LayerInfo::FrameRateCompatibility());
     MOCK_CONST_METHOD0(getOwnerUid, uid_t());
     MOCK_CONST_METHOD0(getDataSpace, ui::Dataspace());
 };
diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index f866005..eb669c0 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -763,7 +763,11 @@
     // We must support R8G8B8A8
     std::vector<VkSurfaceFormatKHR> all_formats = {
         {VK_FORMAT_R8G8B8A8_UNORM, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR},
-        {VK_FORMAT_R8G8B8A8_SRGB, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR}};
+        {VK_FORMAT_R8G8B8A8_SRGB, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR},
+        // Also allow to use PASS_THROUGH + HAL_DATASPACE_ARBITRARY
+        {VK_FORMAT_R8G8B8A8_UNORM, VK_COLOR_SPACE_PASS_THROUGH_EXT},
+        {VK_FORMAT_R8G8B8A8_SRGB, VK_COLOR_SPACE_PASS_THROUGH_EXT},
+    };
 
     if (colorspace_ext) {
         all_formats.emplace_back(VkSurfaceFormatKHR{