diff --git a/adb/client/adb_install.cpp b/adb/client/adb_install.cpp
index bd5508c..21e0874 100644
--- a/adb/client/adb_install.cpp
+++ b/adb/client/adb_install.cpp
@@ -24,12 +24,14 @@
 #include <string>
 #include <vector>
 
+#include <android-base/file.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+
 #include "adb.h"
 #include "adb_client.h"
+#include "adb_unique_fd.h"
 #include "adb_utils.h"
-#include "android-base/file.h"
-#include "android-base/stringprintf.h"
-#include "android-base/strings.h"
 #include "client/file_sync_client.h"
 #include "commandline.h"
 #include "fastdeploy.h"
@@ -179,8 +181,8 @@
             return 1;
         }
 
-        int localFd = adb_open(file, O_RDONLY);
-        if (localFd < 0) {
+        unique_fd local_fd(adb_open(file, O_RDONLY | O_CLOEXEC));
+        if (local_fd < 0) {
             fprintf(stderr, "adb: failed to open %s: %s\n", file, strerror(errno));
             return 1;
         }
@@ -201,19 +203,15 @@
             cmd += " --apex";
         }
 
-        int remoteFd = adb_connect(cmd, &error);
-        if (remoteFd < 0) {
+        unique_fd remote_fd(adb_connect(cmd, &error));
+        if (remote_fd < 0) {
             fprintf(stderr, "adb: connect error for write: %s\n", error.c_str());
-            adb_close(localFd);
             return 1;
         }
 
         char buf[BUFSIZ];
-        copy_to_file(localFd, remoteFd);
-        read_status_line(remoteFd, buf, sizeof(buf));
-
-        adb_close(localFd);
-        adb_close(remoteFd);
+        copy_to_file(local_fd.get(), remote_fd.get());
+        read_status_line(remote_fd.get(), buf, sizeof(buf));
 
         if (!strncmp("Success", buf, 7)) {
             fputs(buf, stdout);
@@ -410,14 +408,15 @@
 
     // Create install session
     std::string error;
-    int fd = adb_connect(cmd, &error);
-    if (fd < 0) {
-        fprintf(stderr, "adb: connect error for create: %s\n", error.c_str());
-        return EXIT_FAILURE;
-    }
     char buf[BUFSIZ];
-    read_status_line(fd, buf, sizeof(buf));
-    adb_close(fd);
+    {
+        unique_fd fd(adb_connect(cmd, &error));
+        if (fd < 0) {
+            fprintf(stderr, "adb: connect error for create: %s\n", error.c_str());
+            return EXIT_FAILURE;
+        }
+        read_status_line(fd.get(), buf, sizeof(buf));
+    }
 
     int session_id = -1;
     if (!strncmp("Success", buf, 7)) {
@@ -450,27 +449,23 @@
                                             install_cmd.c_str(), static_cast<uint64_t>(sb.st_size),
                                             session_id, android::base::Basename(file).c_str());
 
-        int localFd = adb_open(file, O_RDONLY);
-        if (localFd < 0) {
+        unique_fd local_fd(adb_open(file, O_RDONLY | O_CLOEXEC));
+        if (local_fd < 0) {
             fprintf(stderr, "adb: failed to open %s: %s\n", file, strerror(errno));
             success = 0;
             goto finalize_session;
         }
 
         std::string error;
-        int remoteFd = adb_connect(cmd, &error);
-        if (remoteFd < 0) {
+        unique_fd remote_fd(adb_connect(cmd, &error));
+        if (remote_fd < 0) {
             fprintf(stderr, "adb: connect error for write: %s\n", error.c_str());
-            adb_close(localFd);
             success = 0;
             goto finalize_session;
         }
 
-        copy_to_file(localFd, remoteFd);
-        read_status_line(remoteFd, buf, sizeof(buf));
-
-        adb_close(localFd);
-        adb_close(remoteFd);
+        copy_to_file(local_fd.get(), remote_fd.get());
+        read_status_line(remote_fd.get(), buf, sizeof(buf));
 
         if (strncmp("Success", buf, 7)) {
             fprintf(stderr, "adb: failed to write %s\n", file);
@@ -484,13 +479,14 @@
     // Commit session if we streamed everything okay; otherwise abandon
     std::string service = android::base::StringPrintf("%s install-%s %d", install_cmd.c_str(),
                                                       success ? "commit" : "abandon", session_id);
-    fd = adb_connect(service, &error);
-    if (fd < 0) {
-        fprintf(stderr, "adb: connect error for finalize: %s\n", error.c_str());
-        return EXIT_FAILURE;
+    {
+        unique_fd fd(adb_connect(service, &error));
+        if (fd < 0) {
+            fprintf(stderr, "adb: connect error for finalize: %s\n", error.c_str());
+            return EXIT_FAILURE;
+        }
+        read_status_line(fd.get(), buf, sizeof(buf));
     }
-    read_status_line(fd, buf, sizeof(buf));
-    adb_close(fd);
 
     if (!strncmp("Success", buf, 7)) {
         fputs(buf, stdout);
@@ -504,17 +500,22 @@
 int install_multi_package(int argc, const char** argv) {
     // Find all APK arguments starting at end.
     // All other arguments passed through verbatim.
-    int first_apk = -1;
+    bool apex_found = false;
+    int first_package = -1;
     for (int i = argc - 1; i >= 0; i--) {
         const char* file = argv[i];
-        if (android::base::EndsWithIgnoreCase(file, ".apk")) {
-            first_apk = i;
+        if (android::base::EndsWithIgnoreCase(file, ".apk") ||
+            android::base::EndsWithIgnoreCase(file, ".apex")) {
+            first_package = i;
+            if (android::base::EndsWithIgnoreCase(file, ".apex")) {
+                apex_found = true;
+            }
         } else {
             break;
         }
     }
 
-    if (first_apk == -1) error_exit("need APK file on command line");
+    if (first_package == -1) error_exit("need APK or APEX files on command line");
 
     if (use_legacy_install()) {
         fprintf(stderr, "adb: multi-package install is not supported on this device\n");
@@ -524,17 +525,21 @@
 
     std::string multi_package_cmd =
             android::base::StringPrintf("%s install-create --multi-package", install_cmd.c_str());
+    if (apex_found) {
+        multi_package_cmd += " --staged";
+    }
 
     // Create multi-package install session
     std::string error;
-    int fd = adb_connect(multi_package_cmd, &error);
-    if (fd < 0) {
-        fprintf(stderr, "adb: connect error for create multi-package: %s\n", error.c_str());
-        return EXIT_FAILURE;
-    }
     char buf[BUFSIZ];
-    read_status_line(fd, buf, sizeof(buf));
-    adb_close(fd);
+    {
+        unique_fd fd(adb_connect(multi_package_cmd, &error));
+        if (fd < 0) {
+            fprintf(stderr, "adb: connect error for create multi-package: %s\n", error.c_str());
+            return EXIT_FAILURE;
+        }
+        read_status_line(fd.get(), buf, sizeof(buf));
+    }
 
     int parent_session_id = -1;
     if (!strncmp("Success", buf, 7)) {
@@ -560,20 +565,31 @@
     std::string individual_cmd =
             android::base::StringPrintf("%s install-create", install_cmd.c_str());
     std::string all_session_ids = "";
-    for (int i = 1; i < first_apk; i++) {
+    for (int i = 1; i < first_package; i++) {
         individual_cmd += " " + escape_arg(argv[i]);
     }
+    if (apex_found) {
+        individual_cmd += " --staged";
+    }
+    std::string individual_apex_cmd = individual_cmd + " --apex";
     std::string cmd = "";
-    for (int i = first_apk; i < argc; i++) {
-        // Create individual install session
-        fd = adb_connect(individual_cmd, &error);
-        if (fd < 0) {
-            fprintf(stderr, "adb: connect error for create: %s\n", error.c_str());
-            goto finalize_multi_package_session;
-        }
+    for (int i = first_package; i < argc; i++) {
+        const char* file = argv[i];
         char buf[BUFSIZ];
-        read_status_line(fd, buf, sizeof(buf));
-        adb_close(fd);
+        {
+            unique_fd fd;
+            // Create individual install session
+            if (android::base::EndsWithIgnoreCase(file, ".apex")) {
+                fd.reset(adb_connect(individual_apex_cmd, &error));
+            } else {
+                fd.reset(adb_connect(individual_cmd, &error));
+            }
+            if (fd < 0) {
+                fprintf(stderr, "adb: connect error for create: %s\n", error.c_str());
+                goto finalize_multi_package_session;
+            }
+            read_status_line(fd.get(), buf, sizeof(buf));
+        }
 
         int session_id = -1;
         if (!strncmp("Success", buf, 7)) {
@@ -593,7 +609,6 @@
         fprintf(stdout, "Created child session ID %d.\n", session_id);
         session_ids.push_back(session_id);
 
-        const char* file = argv[i];
         struct stat sb;
         if (stat(file, &sb) == -1) {
             fprintf(stderr, "adb: failed to stat %s: %s\n", file, strerror(errno));
@@ -605,25 +620,21 @@
                                             install_cmd.c_str(), static_cast<uint64_t>(sb.st_size),
                                             session_id, i, android::base::Basename(file).c_str());
 
-        int localFd = adb_open(file, O_RDONLY);
-        if (localFd < 0) {
+        unique_fd local_fd(adb_open(file, O_RDONLY | O_CLOEXEC));
+        if (local_fd < 0) {
             fprintf(stderr, "adb: failed to open %s: %s\n", file, strerror(errno));
             goto finalize_multi_package_session;
         }
 
         std::string error;
-        int remoteFd = adb_connect(cmd, &error);
-        if (remoteFd < 0) {
+        unique_fd remote_fd(adb_connect(cmd, &error));
+        if (remote_fd < 0) {
             fprintf(stderr, "adb: connect error for write: %s\n", error.c_str());
-            adb_close(localFd);
             goto finalize_multi_package_session;
         }
 
-        copy_to_file(localFd, remoteFd);
-        read_status_line(remoteFd, buf, sizeof(buf));
-
-        adb_close(localFd);
-        adb_close(remoteFd);
+        copy_to_file(local_fd.get(), remote_fd.get());
+        read_status_line(remote_fd.get(), buf, sizeof(buf));
 
         if (strncmp("Success", buf, 7)) {
             fprintf(stderr, "adb: failed to write %s\n", file);
@@ -636,13 +647,14 @@
 
     cmd = android::base::StringPrintf("%s install-add-session %d%s", install_cmd.c_str(),
                                       parent_session_id, all_session_ids.c_str());
-    fd = adb_connect(cmd, &error);
-    if (fd < 0) {
-        fprintf(stderr, "adb: connect error for create: %s\n", error.c_str());
-        goto finalize_multi_package_session;
+    {
+        unique_fd fd(adb_connect(cmd, &error));
+        if (fd < 0) {
+            fprintf(stderr, "adb: connect error for install-add-session: %s\n", error.c_str());
+            goto finalize_multi_package_session;
+        }
+        read_status_line(fd.get(), buf, sizeof(buf));
     }
-    read_status_line(fd, buf, sizeof(buf));
-    adb_close(fd);
 
     if (strncmp("Success", buf, 7)) {
         fprintf(stderr, "adb: failed to link sessions (%s)\n", cmd.c_str());
@@ -658,13 +670,14 @@
     std::string service =
             android::base::StringPrintf("%s install-%s %d", install_cmd.c_str(),
                                         success == 0 ? "commit" : "abandon", parent_session_id);
-    fd = adb_connect(service, &error);
-    if (fd < 0) {
-        fprintf(stderr, "adb: connect error for finalize: %s\n", error.c_str());
-        return EXIT_FAILURE;
+    {
+        unique_fd fd(adb_connect(service, &error));
+        if (fd < 0) {
+            fprintf(stderr, "adb: connect error for finalize: %s\n", error.c_str());
+            return EXIT_FAILURE;
+        }
+        read_status_line(fd.get(), buf, sizeof(buf));
     }
-    read_status_line(fd, buf, sizeof(buf));
-    adb_close(fd);
 
     if (!strncmp("Success", buf, 7)) {
         fputs(buf, stdout);
@@ -681,13 +694,12 @@
         service = android::base::StringPrintf("%s install-abandon %d", install_cmd.c_str(),
                                               session_ids[i]);
         fprintf(stderr, "Attempting to abandon session ID %d\n", session_ids[i]);
-        fd = adb_connect(service, &error);
+        unique_fd fd(adb_connect(service, &error));
         if (fd < 0) {
             fprintf(stderr, "adb: connect error for finalize: %s\n", error.c_str());
             continue;
         }
-        read_status_line(fd, buf, sizeof(buf));
-        adb_close(fd);
+        read_status_line(fd.get(), buf, sizeof(buf));
     }
     return EXIT_FAILURE;
 }
diff --git a/fs_mgr/Android.bp b/fs_mgr/Android.bp
index d9f2837..974e13e 100644
--- a/fs_mgr/Android.bp
+++ b/fs_mgr/Android.bp
@@ -59,6 +59,7 @@
         "libfs_avb",
         "libfstab",
         "libdm",
+        "libgsi",
     ],
     export_static_lib_headers: [
         "libfs_avb",
@@ -105,5 +106,8 @@
         },
     },
     export_include_dirs: ["include_fstab"],
-    header_libs: ["libbase_headers"],
+    header_libs: [
+        "libbase_headers",
+        "libgsi_headers",
+    ],
 }
diff --git a/fs_mgr/fs_mgr.cpp b/fs_mgr/fs_mgr.cpp
index 9f6c550..70a1045 100644
--- a/fs_mgr/fs_mgr.cpp
+++ b/fs_mgr/fs_mgr.cpp
@@ -79,6 +79,7 @@
 
 #define ZRAM_CONF_DEV   "/sys/block/zram0/disksize"
 #define ZRAM_CONF_MCS   "/sys/block/zram0/max_comp_streams"
+#define ZRAM_BACK_DEV   "/sys/block/zram0/backing_dev"
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
 
@@ -556,9 +557,17 @@
     mkdir(target.c_str(), 0755);
     errno = 0;
     unsigned long mountflags = entry.flags;
-    int ret = mount(source.c_str(), target.c_str(), entry.fs_type.c_str(), mountflags,
+    int ret = 0;
+    int save_errno = 0;
+    do {
+        if (save_errno == EAGAIN) {
+            PINFO << "Retrying mount (source=" << source << ",target=" << target
+                  << ",type=" << entry.fs_type << ")=" << ret << "(" << save_errno << ")";
+        }
+        ret = mount(source.c_str(), target.c_str(), entry.fs_type.c_str(), mountflags,
                     entry.fs_options.c_str());
-    int save_errno = errno;
+        save_errno = errno;
+    } while (ret && save_errno == EAGAIN);
     const char* target_missing = "";
     const char* source_missing = "";
     if (save_errno == ENOENT) {
@@ -954,6 +963,17 @@
     std::map<std::string, std::string> device_map_;
 };
 
+static bool IsMountPointMounted(const std::string& mount_point) {
+    // Check if this is already mounted.
+    Fstab fstab;
+    if (!ReadFstabFromFile("/proc/mounts", &fstab)) {
+        return false;
+    }
+    auto it = std::find_if(fstab.begin(), fstab.end(),
+                           [&](const auto& entry) { return entry.mount_point == mount_point; });
+    return it != fstab.end();
+}
+
 // When multiple fstab records share the same mount_point, it will try to mount each
 // one in turn, and ignore any duplicates after a first successful mount.
 // Returns -1 on error, and  FS_MGR_MNTALL_* otherwise.
@@ -970,9 +990,18 @@
     for (size_t i = 0; i < fstab->size(); i++) {
         auto& current_entry = (*fstab)[i];
 
+        // If a filesystem should have been mounted in the first stage, we
+        // ignore it here. With one exception, if the filesystem is
+        // formattable, then it can only be formatted in the second stage,
+        // so we allow it to mount here.
+        if (current_entry.fs_mgr_flags.first_stage_mount &&
+            (!current_entry.fs_mgr_flags.formattable ||
+             IsMountPointMounted(current_entry.mount_point))) {
+            continue;
+        }
+
         // Don't mount entries that are managed by vold or not for the mount mode.
         if (current_entry.fs_mgr_flags.vold_managed || current_entry.fs_mgr_flags.recovery_only ||
-            current_entry.fs_mgr_flags.first_stage_mount ||
             ((mount_mode == MOUNT_MODE_LATE) && !current_entry.fs_mgr_flags.late_mount) ||
             ((mount_mode == MOUNT_MODE_EARLY) && current_entry.fs_mgr_flags.late_mount)) {
             continue;
@@ -1345,6 +1374,70 @@
     return 0;
 }
 
+static bool InstallZramDevice(const std::string& device) {
+    if (!android::base::WriteStringToFile(device, ZRAM_BACK_DEV)) {
+        PERROR << "Cannot write " << device << " in: " << ZRAM_BACK_DEV;
+        return false;
+    }
+    LINFO << "Success to set " << device << " to " << ZRAM_BACK_DEV;
+    return true;
+}
+
+static bool PrepareZramDevice(const std::string& loop, off64_t size, const std::string& bdev) {
+    if (loop.empty() && bdev.empty()) return true;
+
+    if (bdev.length()) {
+        return InstallZramDevice(bdev);
+    }
+
+    // Get free loopback
+    unique_fd loop_fd(TEMP_FAILURE_RETRY(open("/dev/loop-control", O_RDWR | O_CLOEXEC)));
+    if (loop_fd.get() == -1) {
+        PERROR << "Cannot open loop-control";
+        return false;
+    }
+
+    int num = ioctl(loop_fd.get(), LOOP_CTL_GET_FREE);
+    if (num == -1) {
+        PERROR << "Cannot get free loop slot";
+        return false;
+    }
+
+    // Prepare target path
+    unique_fd target_fd(TEMP_FAILURE_RETRY(open(loop.c_str(), O_RDWR | O_CREAT | O_CLOEXEC, 0664)));
+    if (target_fd.get() == -1) {
+        PERROR << "Cannot open target path: " << loop;
+        return false;
+    }
+    if (fallocate(target_fd.get(), 0, 0, size) < 0) {
+        PERROR << "Cannot truncate target path: " << loop;
+        return false;
+    }
+
+    // Connect loopback (device_fd) to target path (target_fd)
+    std::string device = android::base::StringPrintf("/dev/block/loop%d", num);
+    unique_fd device_fd(TEMP_FAILURE_RETRY(open(device.c_str(), O_RDWR | O_CLOEXEC)));
+    if (device_fd.get() == -1) {
+        PERROR << "Cannot open /dev/block/loop" << num;
+        return false;
+    }
+
+    if (ioctl(device_fd.get(), LOOP_SET_FD, target_fd.get())) {
+        PERROR << "Cannot set loopback to target path";
+        return false;
+    }
+
+    // set block size & direct IO
+    if (ioctl(device_fd.get(), LOOP_SET_BLOCK_SIZE, 4096)) {
+        PWARNING << "Cannot set 4KB blocksize to /dev/block/loop" << num;
+    }
+    if (ioctl(device_fd.get(), LOOP_SET_DIRECT_IO, 1)) {
+        PWARNING << "Cannot set direct_io to /dev/block/loop" << num;
+    }
+
+    return InstallZramDevice(device);
+}
+
 bool fs_mgr_swapon_all(const Fstab& fstab) {
     bool ret = true;
     for (const auto& entry : fstab) {
@@ -1353,6 +1446,10 @@
             continue;
         }
 
+        if (!PrepareZramDevice(entry.zram_loopback_path, entry.zram_loopback_size, entry.zram_backing_dev_path)) {
+            LERROR << "Skipping losetup for '" << entry.blk_device << "'";
+        }
+
         if (entry.zram_size > 0) {
             // A zram_size was specified, so we need to configure the
             // device.  There is no point in having multiple zram devices
diff --git a/fs_mgr/fs_mgr_fstab.cpp b/fs_mgr/fs_mgr_fstab.cpp
index 53b47be..c9f34a7 100644
--- a/fs_mgr/fs_mgr_fstab.cpp
+++ b/fs_mgr/fs_mgr_fstab.cpp
@@ -28,8 +28,10 @@
 #include <vector>
 
 #include <android-base/file.h>
+#include <android-base/parseint.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
+#include <libgsi/libgsi.h>
 
 #include "fs_mgr_priv.h"
 
@@ -43,6 +45,9 @@
     std::string key_dir;
     std::string verity_loc;
     std::string sysfs_path;
+    std::string zram_loopback_path;
+    uint64_t zram_loopback_size = 512 * 1024 * 1024; // 512MB by default
+    std::string zram_backing_dev_path;
     off64_t part_length = 0;
     std::string label;
     int partnum = -1;
@@ -117,6 +122,9 @@
         {"checkpoint=block", MF_CHECKPOINT_BLK},
         {"checkpoint=fs", MF_CHECKPOINT_FS},
         {"slotselect_other", MF_SLOTSELECT_OTHER},
+        {"zram_loopback_path=", MF_ZRAM_LOOPBACK_PATH},
+        {"zram_loopback_size=", MF_ZRAM_LOOPBACK_SIZE},
+        {"zram_backing_dev_path=", MF_ZRAM_BACKING_DEV_PATH},
         {0, 0},
 };
 
@@ -344,6 +352,16 @@
                 } else if (flag == MF_SYSFS) {
                     /* The path to trigger device gc by idle-maint of vold. */
                     flag_vals->sysfs_path = arg;
+                } else if (flag == MF_ZRAM_LOOPBACK_PATH) {
+                    /* The path to use loopback for zram. */
+                    flag_vals->zram_loopback_path = arg;
+                } else if (flag == MF_ZRAM_LOOPBACK_SIZE) {
+                    if (!android::base::ParseByteCount(arg, &flag_vals->zram_loopback_size)) {
+                        LERROR << "Warning: zram_loopback_size = flag malformed";
+                    }
+                } else if (flag == MF_ZRAM_BACKING_DEV_PATH) {
+                    /* The path to use loopback for zram. */
+                    flag_vals->zram_backing_dev_path = arg;
                 }
                 break;
             }
@@ -569,6 +587,9 @@
         entry.logical_blk_size = flag_vals.logical_blk_size;
         entry.sysfs_path = std::move(flag_vals.sysfs_path);
         entry.vbmeta_partition = std::move(flag_vals.vbmeta_partition);
+        entry.zram_loopback_path = std::move(flag_vals.zram_loopback_path);
+        entry.zram_loopback_size = std::move(flag_vals.zram_loopback_size);
+        entry.zram_backing_dev_path = std::move(flag_vals.zram_backing_dev_path);
         if (entry.fs_mgr_flags.logical) {
             entry.logical_partition_name = entry.blk_device;
         }
@@ -638,6 +659,35 @@
     return boot_devices;
 }
 
+static void EraseFstabEntry(Fstab* fstab, const std::string& mount_point) {
+    auto iter = std::remove_if(fstab->begin(), fstab->end(),
+                               [&](const auto& entry) { return entry.mount_point == mount_point; });
+    fstab->erase(iter, fstab->end());
+}
+
+static void TransformFstabForGsi(Fstab* fstab) {
+    EraseFstabEntry(fstab, "/system");
+    EraseFstabEntry(fstab, "/data");
+
+    fstab->emplace_back(BuildGsiSystemFstabEntry());
+
+    constexpr uint32_t kFlags = MS_NOATIME | MS_NOSUID | MS_NODEV;
+
+    FstabEntry userdata = {
+            .blk_device = "userdata_gsi",
+            .mount_point = "/data",
+            .fs_type = "ext4",
+            .flags = kFlags,
+            .reserved_size = 128 * 1024 * 1024,
+    };
+    userdata.fs_mgr_flags.wait = true;
+    userdata.fs_mgr_flags.check = true;
+    userdata.fs_mgr_flags.logical = true;
+    userdata.fs_mgr_flags.quota = true;
+    userdata.fs_mgr_flags.late_mount = true;
+    fstab->emplace_back(userdata);
+}
+
 bool ReadFstabFromFile(const std::string& path, Fstab* fstab) {
     auto fstab_file = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
     if (!fstab_file) {
@@ -645,10 +695,15 @@
         return false;
     }
 
-    if (!fs_mgr_read_fstab_file(fstab_file.get(), path == "/proc/mounts", fstab)) {
+    bool is_proc_mounts = path == "/proc/mounts";
+
+    if (!fs_mgr_read_fstab_file(fstab_file.get(), is_proc_mounts, fstab)) {
         LERROR << __FUNCTION__ << "(): failed to load fstab from : '" << path << "'";
         return false;
     }
+    if (!is_proc_mounts && !access(android::gsi::kGsiBootedIndicatorFile, F_OK)) {
+        TransformFstabForGsi(fstab);
+    }
 
     return true;
 }
@@ -776,6 +831,8 @@
         free(fstab->recs[i].key_dir);
         free(fstab->recs[i].label);
         free(fstab->recs[i].sysfs_path);
+        free(fstab->recs[i].zram_loopback_path);
+        free(fstab->recs[i].zram_backing_dev_path);
     }
 
     /* Free the fstab_recs array created by calloc(3) */
@@ -873,6 +930,9 @@
     entry.erase_blk_size = fstab_rec->erase_blk_size;
     entry.logical_blk_size = fstab_rec->logical_blk_size;
     entry.sysfs_path = fstab_rec->sysfs_path;
+    entry.zram_loopback_path = fstab_rec->zram_loopback_path;
+    entry.zram_loopback_size = fstab_rec->zram_loopback_size;
+    entry.zram_backing_dev_path = fstab_rec->zram_backing_dev_path;
 
     return entry;
 }
@@ -916,6 +976,9 @@
         legacy_fstab->recs[i].erase_blk_size = fstab[i].erase_blk_size;
         legacy_fstab->recs[i].logical_blk_size = fstab[i].logical_blk_size;
         legacy_fstab->recs[i].sysfs_path = strdup(fstab[i].sysfs_path.c_str());
+        legacy_fstab->recs[i].zram_loopback_path = strdup(fstab[i].zram_loopback_path.c_str());
+        legacy_fstab->recs[i].zram_loopback_size = fstab[i].zram_loopback_size;
+        legacy_fstab->recs[i].zram_backing_dev_path = strdup(fstab[i].zram_backing_dev_path.c_str());
     }
     return legacy_fstab;
 }
@@ -1023,3 +1086,17 @@
 int fs_mgr_is_checkpoint_blk(const struct fstab_rec* fstab) {
     return fstab->fs_mgr_flags & MF_CHECKPOINT_BLK;
 }
+
+FstabEntry BuildGsiSystemFstabEntry() {
+    FstabEntry system = {
+            .blk_device = "system_gsi",
+            .mount_point = "/system",
+            .fs_type = "ext4",
+            .flags = MS_RDONLY,
+            .fs_options = "barrier=1",
+    };
+    system.fs_mgr_flags.wait = true;
+    system.fs_mgr_flags.logical = true;
+    system.fs_mgr_flags.first_stage_mount = true;
+    return system;
+}
diff --git a/fs_mgr/fs_mgr_overlayfs.cpp b/fs_mgr/fs_mgr_overlayfs.cpp
index 6364ca9..0f89467 100644
--- a/fs_mgr/fs_mgr_overlayfs.cpp
+++ b/fs_mgr/fs_mgr_overlayfs.cpp
@@ -48,6 +48,7 @@
 #include <fs_mgr_overlayfs.h>
 #include <fstab/fstab.h>
 #include <libdm/dm.h>
+#include <libgsi/libgsi.h>
 #include <liblp/builder.h>
 #include <liblp/liblp.h>
 
@@ -802,8 +803,9 @@
 bool fs_mgr_overlayfs_invalid() {
     if (fs_mgr_overlayfs_valid() == OverlayfsValidResult::kNotSupported) return true;
 
-    // in recovery or fastbootd mode, not allowed!
+    // in recovery, fastbootd, or gsi mode, not allowed!
     if (fs_mgr_access("/system/bin/recovery")) return true;
+    if (android::gsi::IsGsiRunning()) return true;
 
     return false;
 }
diff --git a/fs_mgr/fs_mgr_priv.h b/fs_mgr/fs_mgr_priv.h
index 7842ca2..39ceff7 100644
--- a/fs_mgr/fs_mgr_priv.h
+++ b/fs_mgr/fs_mgr_priv.h
@@ -122,6 +122,12 @@
                           0x80000000
 #define MF_SLOTSELECT_OTHER  \
                          0x100000000
+#define MF_ZRAM_LOOPBACK_PATH    \
+                         0x200000000
+#define MF_ZRAM_LOOPBACK_SIZE    \
+                         0x400000000
+#define MF_ZRAM_BACKING_DEV_PATH \
+                         0x800000000
 // clang-format on
 
 #define DM_BUF_SIZE 4096
diff --git a/fs_mgr/include_fstab/fstab/fstab.h b/fs_mgr/include_fstab/fstab/fstab.h
index 0997254..5d8496d 100644
--- a/fs_mgr/include_fstab/fstab/fstab.h
+++ b/fs_mgr/include_fstab/fstab/fstab.h
@@ -59,6 +59,9 @@
     off64_t erase_blk_size;
     off64_t logical_blk_size;
     char* sysfs_path;
+    char* zram_loopback_path;
+    uint64_t zram_loopback_size;
+    char* zram_backing_dev_path;
 };
 
 struct fstab* fs_mgr_read_fstab_default();
@@ -119,6 +122,9 @@
     off64_t logical_blk_size = 0;
     std::string sysfs_path;
     std::string vbmeta_partition;
+    std::string zram_loopback_path;
+    uint64_t zram_loopback_size;
+    std::string zram_backing_dev_path;
 
     // TODO: Remove this union once fstab_rec is deprecated. It only serves as a
     // convenient way to convert between fstab_rec::fs_mgr_flags and these bools.
@@ -187,3 +193,6 @@
 FstabEntry FstabRecToFstabEntry(const fstab_rec* fstab_rec);
 Fstab LegacyFstabToFstab(const struct fstab* legacy_fstab);
 fstab* FstabToLegacyFstab(const Fstab& fstab);
+
+// Helper method to build a GSI fstab entry for mounting /system.
+FstabEntry BuildGsiSystemFstabEntry();
diff --git a/fs_mgr/libdm/Android.bp b/fs_mgr/libdm/Android.bp
index fc1aafb..c8c2d83 100644
--- a/fs_mgr/libdm/Android.bp
+++ b/fs_mgr/libdm/Android.bp
@@ -33,6 +33,11 @@
         "libbase_headers",
         "liblog_headers",
     ],
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
 }
 
 cc_test {
diff --git a/fs_mgr/libfs_avb/avb_ops.cpp b/fs_mgr/libfs_avb/avb_ops.cpp
index 3b0ef0b..3efa794 100644
--- a/fs_mgr/libfs_avb/avb_ops.cpp
+++ b/fs_mgr/libfs_avb/avb_ops.cpp
@@ -186,6 +186,7 @@
             avb_slot_verify(&avb_ops_, requested_partitions, ab_suffix.c_str(), flags,
                             AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE, &avb_slot_data);
 
+    if (!avb_slot_data) return verify_result;
     // Copies avb_slot_data->vbmeta_images[].
     for (size_t i = 0; i < avb_slot_data->num_vbmeta_images; i++) {
         out_vbmeta_images->emplace_back(VBMetaData(avb_slot_data->vbmeta_images[i].vbmeta_data,
diff --git a/fs_mgr/tests/adb-remount-test.sh b/fs_mgr/tests/adb-remount-test.sh
index a849578..825109f 100755
--- a/fs_mgr/tests/adb-remount-test.sh
+++ b/fs_mgr/tests/adb-remount-test.sh
@@ -378,7 +378,7 @@
   D=`echo / /
      echo "${D}" | grep -v /dev/root`
 fi
-D=`echo "${D}" | cut -s -d' ' -f1`
+D=`echo "${D}" | cut -s -d' ' -f1 | sort -u`
 D=`adb_sh df -k ${D} </dev/null`
 echo "${D}"
 if [ X"${D}" = X"${D##* 100[%] }" ]; then
@@ -506,7 +506,9 @@
     echo "${D}" &&
     echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
     die  "overlay takeover after remount"
-  !(adb_sh grep "^overlay " /proc/mounts </dev/null | grep -v "^overlay /vendor/..* overlay ro," | grep " overlay ro,") &&
+  !(adb_sh grep "^overlay " /proc/mounts </dev/null |
+    grep -v "^overlay /\(vendor\|system\)/..* overlay ro," |
+    grep " overlay ro,") &&
     !(adb_sh grep " rw," /proc/mounts </dev/null |
       skip_administrative_mounts data) ||
     die "remount overlayfs missed a spot (ro)"
diff --git a/init/Android.bp b/init/Android.bp
index c920dc2..3369fb9 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -77,6 +77,7 @@
         "libext4_utils",
         "libfs_mgr",
         "libfscrypt",
+        "libgsi",
         "libhidl-gen-utils",
         "libkeyutils",
         "liblog",
diff --git a/init/Android.mk b/init/Android.mk
index bdd0301..69c63e1 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -91,6 +91,7 @@
     libz \
     libselinux \
     libcap \
+    libgsi \
 
 LOCAL_SANITIZE := signed-integer-overflow
 # First stage init is weird: it may start without stdout/stderr, and no /proc.
diff --git a/init/README.md b/init/README.md
index 8d47e0a..3a7c71c 100644
--- a/init/README.md
+++ b/init/README.md
@@ -482,9 +482,8 @@
   -f: force installation of the module even if the version of the running kernel
   and the version of the kernel for which the module was compiled do not match.
 
-`load_all_props`
-> Loads properties from /system, /vendor, et cetera.
-  This is included in the default init.rc.
+`load_system_props`
+> (This action is deprecated and no-op.)
 
 `load_persist_props`
 > Loads persistent properties when /data has been decrypted.
diff --git a/init/builtins.cpp b/init/builtins.cpp
index 4a66e46..e1a86e4 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -54,6 +54,7 @@
 #include <fs_mgr.h>
 #include <fscrypt/fscrypt.h>
 #include <fscrypt/fscrypt_init_extensions.h>
+#include <libgsi/libgsi.h>
 #include <selinux/android.h>
 #include <selinux/label.h>
 #include <selinux/selinux.h>
@@ -520,6 +521,9 @@
         return Success();
     } else if (code == FS_MGR_MNTALL_DEV_NEEDS_RECOVERY) {
         /* Setup a wipe via recovery, and reboot into recovery */
+        if (android::gsi::IsGsiRunning()) {
+            return Error() << "cannot wipe within GSI";
+        }
         PLOG(ERROR) << "fs_mgr_mount_all suggested recovery, so wiping data via recovery.";
         const std::vector<std::string> options = {"--wipe_data", "--reason=fs_mgr_mount_all" };
         return reboot_into_recovery(options);
@@ -972,7 +976,7 @@
 }
 
 static Result<Success> do_load_system_props(const BuiltinArguments& args) {
-    load_system_props();
+    LOG(INFO) << "deprecated action `load_system_props` called.";
     return Success();
 }
 
@@ -1022,7 +1026,8 @@
     }
     service->AddReapCallback([reboot_reason](const siginfo_t& siginfo) {
         if (siginfo.si_code != CLD_EXITED || siginfo.si_status != 0) {
-            if (fscrypt_is_native()) {
+            // TODO (b/122850122): support this in gsi
+            if (fscrypt_is_native() && !android::gsi::IsGsiRunning()) {
                 LOG(ERROR) << "Rebooting into recovery, reason: " << reboot_reason;
                 if (auto result = reboot_into_recovery(
                             {"--prompt_and_wipe_data", "--reason="s + reboot_reason});
diff --git a/init/first_stage_mount.cpp b/init/first_stage_mount.cpp
index 71fe401..affa39e 100644
--- a/init/first_stage_mount.cpp
+++ b/init/first_stage_mount.cpp
@@ -34,6 +34,7 @@
 #include <fs_mgr.h>
 #include <fs_mgr_dm_linear.h>
 #include <fs_mgr_overlayfs.h>
+#include <libgsi/libgsi.h>
 #include <liblp/liblp.h>
 
 #include "devices.h"
@@ -79,6 +80,7 @@
     bool IsDmLinearEnabled();
     bool GetDmLinearMetadataDevice();
     bool InitDmLinearBackingDevices(const android::fs_mgr::LpMetadata& metadata);
+    void UseGsiIfPresent();
 
     ListenerAction UeventCallback(const Uevent& uevent);
 
@@ -207,6 +209,8 @@
     }
 
     required_devices_partition_names_.emplace(super_partition_name_);
+    // When booting from live GSI images, userdata is the super device.
+    required_devices_partition_names_.emplace("userdata");
     return true;
 }
 
@@ -410,6 +414,16 @@
 // this case, we mount system first then pivot to it.  From that point on,
 // we are effectively identical to a system-as-root device.
 bool FirstStageMount::TrySwitchSystemAsRoot() {
+    auto metadata_partition = std::find_if(fstab_.begin(), fstab_.end(), [](const auto& entry) {
+        return entry.mount_point == "/metadata";
+    });
+    if (metadata_partition != fstab_.end()) {
+        if (MountPartition(&(*metadata_partition))) {
+            fstab_.erase(metadata_partition);
+            UseGsiIfPresent();
+        }
+    }
+
     auto system_partition = std::find_if(fstab_.begin(), fstab_.end(), [](const auto& entry) {
         return entry.mount_point == "/system";
     });
@@ -513,6 +527,40 @@
     return true;
 }
 
+void FirstStageMount::UseGsiIfPresent() {
+    std::string metadata_file, error;
+
+    if (!android::gsi::CanBootIntoGsi(&metadata_file, &error)) {
+        LOG(INFO) << "GSI " << error << ", proceeding with normal boot";
+        return;
+    }
+
+    auto metadata = android::fs_mgr::ReadFromImageFile(metadata_file.c_str());
+    if (!metadata) {
+        LOG(ERROR) << "GSI partition layout could not be read";
+        return;
+    }
+
+    if (!android::fs_mgr::CreateLogicalPartitions(*metadata.get(), "/dev/block/by-name/userdata")) {
+        LOG(ERROR) << "GSI partition layout could not be instantiated";
+        return;
+    }
+
+    if (!android::gsi::MarkSystemAsGsi()) {
+        PLOG(ERROR) << "GSI indicator file could not be written";
+        return;
+    }
+
+    // Replace the existing system fstab entry.
+    auto system_partition = std::find_if(fstab_.begin(), fstab_.end(), [](const auto& entry) {
+        return entry.mount_point == "/system";
+    });
+    if (system_partition != fstab_.end()) {
+        fstab_.erase(system_partition);
+    }
+    fstab_.emplace_back(BuildGsiSystemFstabEntry());
+}
+
 bool FirstStageMountVBootV1::GetDmVerityDevices() {
     std::string verity_loc_device;
     need_dm_verity_ = false;
diff --git a/init/property_service.cpp b/init/property_service.cpp
index 5328869..3199d45 100644
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
@@ -699,22 +699,6 @@
     }
 }
 
-void property_load_boot_defaults() {
-    if (!load_properties_from_file("/system/etc/prop.default", NULL)) {
-        // Try recovery path
-        if (!load_properties_from_file("/prop.default", NULL)) {
-            // Try legacy path
-            load_properties_from_file("/default.prop", NULL);
-        }
-    }
-    load_properties_from_file("/product/build.prop", NULL);
-    load_properties_from_file("/product_services/build.prop", NULL);
-    load_properties_from_file("/odm/default.prop", NULL);
-    load_properties_from_file("/vendor/default.prop", NULL);
-
-    update_sys_usb_config();
-}
-
 static void load_override_properties() {
     if (ALLOW_LOCAL_PROP_OVERRIDE) {
         load_properties_from_file("/data/local.prop", NULL);
@@ -779,12 +763,29 @@
     close(fd);
 }
 
-void load_system_props() {
+void property_load_boot_defaults() {
+    // TODO(b/117892318): merge prop.default and build.prop files into one
+    // TODO(b/122864654): read the prop files from all partitions and then
+    // resolve the duplication by their origin so that RO and non-RO properties
+    // have a consistent overriding order.
+    if (!load_properties_from_file("/system/etc/prop.default", NULL)) {
+        // Try recovery path
+        if (!load_properties_from_file("/prop.default", NULL)) {
+            // Try legacy path
+            load_properties_from_file("/default.prop", NULL);
+        }
+    }
+    load_properties_from_file("/product/build.prop", NULL);
+    load_properties_from_file("/product_services/build.prop", NULL);
+    load_properties_from_file("/odm/default.prop", NULL);
+    load_properties_from_file("/vendor/default.prop", NULL);
     load_properties_from_file("/system/build.prop", NULL);
     load_properties_from_file("/odm/build.prop", NULL);
     load_properties_from_file("/vendor/build.prop", NULL);
     load_properties_from_file("/factory/factory.prop", "ro.*");
     load_recovery_id_prop();
+
+    update_sys_usb_config();
 }
 
 static int SelinuxAuditCallback(void* data, security_class_t /*cls*/, char* buf, size_t len) {
diff --git a/init/reboot.cpp b/init/reboot.cpp
index 45dc6d3..c11ea10 100644
--- a/init/reboot.cpp
+++ b/init/reboot.cpp
@@ -20,9 +20,11 @@
 #include <fcntl.h>
 #include <linux/fs.h>
 #include <mntent.h>
+#include <linux/loop.h>
 #include <sys/cdefs.h>
 #include <sys/ioctl.h>
 #include <sys/mount.h>
+#include <sys/swap.h>
 #include <sys/stat.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
@@ -58,6 +60,7 @@
 using android::base::Split;
 using android::base::StringPrintf;
 using android::base::Timer;
+using android::base::unique_fd;
 
 namespace android {
 namespace init {
@@ -103,13 +106,17 @@
         int st;
         if (IsF2Fs()) {
             const char* f2fs_argv[] = {
-                "/system/bin/fsck.f2fs", "-f", mnt_fsname_.c_str(),
+                    "/system/bin/fsck.f2fs",
+                    "-a",
+                    mnt_fsname_.c_str(),
             };
             android_fork_execvp_ext(arraysize(f2fs_argv), (char**)f2fs_argv, &st, true, LOG_KLOG,
                                     true, nullptr, nullptr, 0);
         } else if (IsExt4()) {
             const char* ext4_argv[] = {
-                "/system/bin/e2fsck", "-f", "-y", mnt_fsname_.c_str(),
+                    "/system/bin/e2fsck",
+                    "-y",
+                    mnt_fsname_.c_str(),
             };
             android_fork_execvp_ext(arraysize(ext4_argv), (char**)ext4_argv, &st, true, LOG_KLOG,
                                     true, nullptr, nullptr, 0);
@@ -281,6 +288,48 @@
     return stat;
 }
 
+// zram is able to use backing device on top of a loopback device.
+// In order to unmount /data successfully, we have to kill the loopback device first
+#define ZRAM_DEVICE   "/dev/block/zram0"
+#define ZRAM_RESET    "/sys/block/zram0/reset"
+#define ZRAM_BACK_DEV "/sys/block/zram0/backing_dev"
+static void KillZramBackingDevice() {
+    std::string backing_dev;
+    if (!android::base::ReadFileToString(ZRAM_BACK_DEV, &backing_dev)) return;
+
+    if (!android::base::StartsWith(backing_dev, "/dev/block/loop")) return;
+
+    // cut the last "\n"
+    backing_dev.erase(backing_dev.length() - 1);
+
+    // shutdown zram handle
+    Timer swap_timer;
+    LOG(INFO) << "swapoff() start...";
+    if (swapoff(ZRAM_DEVICE) == -1) {
+        LOG(ERROR) << "zram_backing_dev: swapoff (" << backing_dev << ")" << " failed";
+        return;
+    }
+    LOG(INFO) << "swapoff() took " << swap_timer;;
+
+    if (!android::base::WriteStringToFile("1", ZRAM_RESET)) {
+        LOG(ERROR) << "zram_backing_dev: reset (" << backing_dev << ")" << " failed";
+        return;
+    }
+
+    // clear loopback device
+    unique_fd loop(TEMP_FAILURE_RETRY(open(backing_dev.c_str(), O_RDWR | O_CLOEXEC)));
+    if (loop.get() < 0) {
+        LOG(ERROR) << "zram_backing_dev: open(" << backing_dev << ")" << " failed";
+        return;
+    }
+
+    if (ioctl(loop.get(), LOOP_CLR_FD, 0) < 0) {
+        LOG(ERROR) << "zram_backing_dev: loop_clear (" << backing_dev << ")" << " failed";
+        return;
+    }
+    LOG(INFO) << "zram_backing_dev: `" << backing_dev << "` is cleared successfully.";
+}
+
 //* Reboot / shutdown the system.
 // cmd ANDROID_RB_* as defined in android_reboot.h
 // reason Reason string like "reboot", "shutdown,userrequested"
@@ -423,6 +472,9 @@
         sync();
         LOG(INFO) << "sync() before umount took" << sync_timer;
     }
+    // 5. drop caches and disable zram backing device, if exist
+    KillZramBackingDevice();
+
     UmountStat stat = TryUmountAndFsck(runFsck, shutdown_timeout - t.duration());
     // Follow what linux shutdown is doing: one more sync with little bit delay
     {
diff --git a/libcutils/include/private/android_filesystem_config.h b/libcutils/include/private/android_filesystem_config.h
index 0723612..03edfb5 100644
--- a/libcutils/include/private/android_filesystem_config.h
+++ b/libcutils/include/private/android_filesystem_config.h
@@ -190,7 +190,8 @@
  */
 #define AID_OVERFLOWUID 65534 /* unmapped user in the user namespace */
 
-#define AID_ISOLATED_START 99000 /* start of uids for fully isolated sandboxed processes */
+/* use the ranges below to determine whether a process is isolated */
+#define AID_ISOLATED_START 90000 /* start of uids for fully isolated sandboxed processes */
 #define AID_ISOLATED_END 99999   /* end of uids for fully isolated sandboxed processes */
 
 #define AID_USER 100000        /* TODO: switch users over to AID_USER_OFFSET */
diff --git a/liblog/Android.bp b/liblog/Android.bp
index 619a94b..4fd36f5 100644
--- a/liblog/Android.bp
+++ b/liblog/Android.bp
@@ -15,30 +15,29 @@
 //
 
 liblog_sources = [
-    "config_read.c",
-    "config_write.c",
-    "log_event_list.c",
-    "log_event_write.c",
-    "log_ratelimit.cpp",
-    "logger_lock.c",
-    "logger_name.c",
-    "logger_read.c",
-    "logger_write.c",
-    "logprint.c",
-    "stderr_write.c",
+    "config_read.cpp",
+    "config_write.cpp",
+    "log_event_list.cpp",
+    "log_event_write.cpp",
+    "logger_lock.cpp",
+    "logger_name.cpp",
+    "logger_read.cpp",
+    "logger_write.cpp",
+    "logprint.cpp",
+    "stderr_write.cpp",
 ]
 liblog_host_sources = [
-    "fake_log_device.c",
-    "fake_writer.c",
+    "fake_log_device.cpp",
+    "fake_writer.cpp",
 ]
 liblog_target_sources = [
     "event_tag_map.cpp",
     "log_time.cpp",
-    "properties.c",
-    "pmsg_reader.c",
-    "pmsg_writer.c",
-    "logd_reader.c",
-    "logd_writer.c",
+    "properties.cpp",
+    "pmsg_reader.cpp",
+    "pmsg_writer.cpp",
+    "logd_reader.cpp",
+    "logd_writer.cpp",
 ]
 
 cc_library_headers {
@@ -86,7 +85,6 @@
             ldflags: ["-Wl,--hash-style=both"],
         },
         windows: {
-            srcs: ["uio.c"],
             enabled: true,
         },
         not_windows: {
diff --git a/liblog/config_read.c b/liblog/config_read.cpp
similarity index 68%
rename from liblog/config_read.c
rename to liblog/config_read.cpp
index 51ffff6..80177a4 100644
--- a/liblog/config_read.c
+++ b/liblog/config_read.cpp
@@ -19,23 +19,21 @@
 #include "config_read.h"
 #include "logger.h"
 
-LIBLOG_HIDDEN struct listnode __android_log_transport_read = {
-  &__android_log_transport_read, &__android_log_transport_read
-};
-LIBLOG_HIDDEN struct listnode __android_log_persist_read = {
-  &__android_log_persist_read, &__android_log_persist_read
-};
+LIBLOG_HIDDEN struct listnode __android_log_transport_read = {&__android_log_transport_read,
+                                                              &__android_log_transport_read};
+LIBLOG_HIDDEN struct listnode __android_log_persist_read = {&__android_log_persist_read,
+                                                            &__android_log_persist_read};
 
-static void __android_log_add_transport(
-    struct listnode* list, struct android_log_transport_read* transport) {
-  size_t i;
+static void __android_log_add_transport(struct listnode* list,
+                                        struct android_log_transport_read* transport) {
+  uint32_t i;
 
   /* Try to keep one functioning transport for each log buffer id */
   for (i = LOG_ID_MIN; i < LOG_ID_MAX; i++) {
     struct android_log_transport_read* transp;
 
     if (list_empty(list)) {
-      if (!transport->available || ((*transport->available)(i) >= 0)) {
+      if (!transport->available || ((*transport->available)(static_cast<log_id_t>(i)) >= 0)) {
         list_add_tail(list, &transport->node);
         return;
       }
@@ -44,8 +42,8 @@
         if (!transp->available) {
           return;
         }
-        if (((*transp->available)(i) < 0) &&
-            (!transport->available || ((*transport->available)(i) >= 0))) {
+        if (((*transp->available)(static_cast<log_id_t>(i)) < 0) &&
+            (!transport->available || ((*transport->available)(static_cast<log_id_t>(i)) >= 0))) {
           list_add_tail(list, &transport->node);
           return;
         }
@@ -56,8 +54,7 @@
 
 LIBLOG_HIDDEN void __android_log_config_read() {
 #if (FAKE_LOG_DEVICE == 0)
-  if ((__android_log_transport == LOGGER_DEFAULT) ||
-      (__android_log_transport & LOGGER_LOGD)) {
+  if ((__android_log_transport == LOGGER_DEFAULT) || (__android_log_transport & LOGGER_LOGD)) {
     extern struct android_log_transport_read logdLoggerRead;
     extern struct android_log_transport_read pmsgLoggerRead;
 
diff --git a/liblog/config_read.h b/liblog/config_read.h
index 7b29fa4..00ea453 100644
--- a/liblog/config_read.h
+++ b/liblog/config_read.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBLOG_CONFIG_READ_H__
-#define _LIBLOG_CONFIG_READ_H__
+#pragma once
 
 #include <cutils/list.h>
 
@@ -51,5 +50,3 @@
 LIBLOG_HIDDEN void __android_log_config_read_close();
 
 __END_DECLS
-
-#endif /* _LIBLOG_CONFIG_READ_H__ */
diff --git a/liblog/config_write.c b/liblog/config_write.cpp
similarity index 69%
rename from liblog/config_write.c
rename to liblog/config_write.cpp
index 003ec8f..e65c238 100644
--- a/liblog/config_write.c
+++ b/liblog/config_write.cpp
@@ -19,23 +19,21 @@
 #include "config_write.h"
 #include "logger.h"
 
-LIBLOG_HIDDEN struct listnode __android_log_transport_write = {
-  &__android_log_transport_write, &__android_log_transport_write
-};
-LIBLOG_HIDDEN struct listnode __android_log_persist_write = {
-  &__android_log_persist_write, &__android_log_persist_write
-};
+LIBLOG_HIDDEN struct listnode __android_log_transport_write = {&__android_log_transport_write,
+                                                               &__android_log_transport_write};
+LIBLOG_HIDDEN struct listnode __android_log_persist_write = {&__android_log_persist_write,
+                                                             &__android_log_persist_write};
 
-static void __android_log_add_transport(
-    struct listnode* list, struct android_log_transport_write* transport) {
-  size_t i;
+static void __android_log_add_transport(struct listnode* list,
+                                        struct android_log_transport_write* transport) {
+  uint32_t i;
 
   /* Try to keep one functioning transport for each log buffer id */
   for (i = LOG_ID_MIN; i < LOG_ID_MAX; i++) {
     struct android_log_transport_write* transp;
 
     if (list_empty(list)) {
-      if (!transport->available || ((*transport->available)(i) >= 0)) {
+      if (!transport->available || ((*transport->available)(static_cast<log_id_t>(i)) >= 0)) {
         list_add_tail(list, &transport->node);
         return;
       }
@@ -44,8 +42,8 @@
         if (!transp->available) {
           return;
         }
-        if (((*transp->available)(i) < 0) &&
-            (!transport->available || ((*transport->available)(i) >= 0))) {
+        if (((*transp->available)(static_cast<log_id_t>(i)) < 0) &&
+            (!transport->available || ((*transport->available)(static_cast<log_id_t>(i)) >= 0))) {
           list_add_tail(list, &transport->node);
           return;
         }
@@ -55,20 +53,17 @@
 }
 
 LIBLOG_HIDDEN void __android_log_config_write() {
-  if ((__android_log_transport == LOGGER_DEFAULT) ||
-      (__android_log_transport & LOGGER_LOGD)) {
+  if ((__android_log_transport == LOGGER_DEFAULT) || (__android_log_transport & LOGGER_LOGD)) {
 #if (FAKE_LOG_DEVICE == 0)
     extern struct android_log_transport_write logdLoggerWrite;
     extern struct android_log_transport_write pmsgLoggerWrite;
 
-    __android_log_add_transport(&__android_log_transport_write,
-                                &logdLoggerWrite);
+    __android_log_add_transport(&__android_log_transport_write, &logdLoggerWrite);
     __android_log_add_transport(&__android_log_persist_write, &pmsgLoggerWrite);
 #else
     extern struct android_log_transport_write fakeLoggerWrite;
 
-    __android_log_add_transport(&__android_log_transport_write,
-                                &fakeLoggerWrite);
+    __android_log_add_transport(&__android_log_transport_write, &fakeLoggerWrite);
 #endif
   }
 
@@ -81,8 +76,7 @@
      * Remember we can be called here if we are already initialized.
      */
     if (list_empty(&__android_log_transport_write)) {
-      __android_log_add_transport(&__android_log_transport_write,
-                                  &stderrLoggerWrite);
+      __android_log_add_transport(&__android_log_transport_write, &stderrLoggerWrite);
     } else {
       struct android_log_transport_write* transp;
       write_transport_for_each(transp, &__android_log_transport_write) {
@@ -90,8 +84,7 @@
           return;
         }
       }
-      __android_log_add_transport(&__android_log_persist_write,
-                                  &stderrLoggerWrite);
+      __android_log_add_transport(&__android_log_persist_write, &stderrLoggerWrite);
     }
   }
 }
diff --git a/liblog/config_write.h b/liblog/config_write.h
index db1a083..e3be445 100644
--- a/liblog/config_write.h
+++ b/liblog/config_write.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBLOG_CONFIG_WRITE_H__
-#define _LIBLOG_CONFIG_WRITE_H__
+#pragma once
 
 #include <cutils/list.h>
 
@@ -51,5 +50,3 @@
 LIBLOG_HIDDEN void __android_log_config_write_close();
 
 __END_DECLS
-
-#endif /* _LIBLOG_CONFIG_WRITE_H__ */
diff --git a/liblog/fake_log_device.c b/liblog/fake_log_device.cpp
similarity index 88%
rename from liblog/fake_log_device.c
rename to liblog/fake_log_device.cpp
index 1483c24..5daae41 100644
--- a/liblog/fake_log_device.c
+++ b/liblog/fake_log_device.cpp
@@ -17,6 +17,9 @@
  * Intercepts log messages intended for the Android log device.
  * Messages are printed to stderr.
  */
+
+#include "fake_log_device.h"
+
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -30,9 +33,7 @@
 #include <time.h>
 
 #include <android/log.h>
-#include <log/uio.h>
 
-#include "fake_log_device.h"
 #include "log_portability.h"
 
 #define kMaxTagLen 16 /* from the long-dead utils/Log.cpp */
@@ -181,8 +182,7 @@
   logState->debugName[sizeof(logState->debugName) - 1] = '\0';
 
   /* identify binary logs */
-  if (!strcmp(pathName + kDevLogLen, "events") ||
-      !strcmp(pathName + kDevLogLen, "security")) {
+  if (!strcmp(pathName + kDevLogLen, "events") || !strcmp(pathName + kDevLogLen, "security")) {
     logState->isBinary = 1;
   }
 
@@ -204,8 +204,7 @@
       while (isspace(*tags)) tags++;
 
       i = 0;
-      while (*tags != '\0' && !isspace(*tags) && *tags != ':' &&
-             i < kMaxTagLen) {
+      while (*tags != '\0' && !isspace(*tags) && *tags != ':' && i < kMaxTagLen) {
         tagName[i++] = *tags++;
       }
       if (i == kMaxTagLen) {
@@ -313,13 +312,11 @@
  */
 static const char* getPriorityString(int priority) {
   /* the first character of each string should be unique */
-  static const char* priorityStrings[] = { "Verbose", "Debug", "Info",
-                                           "Warn",    "Error", "Assert" };
+  static const char* priorityStrings[] = {"Verbose", "Debug", "Info", "Warn", "Error", "Assert"};
   int idx;
 
   idx = (int)priority - (int)ANDROID_LOG_VERBOSE;
-  if (idx < 0 ||
-      idx >= (int)(sizeof(priorityStrings) / sizeof(priorityStrings[0])))
+  if (idx < 0 || idx >= (int)(sizeof(priorityStrings) / sizeof(priorityStrings[0])))
     return "?unknown?";
   return priorityStrings[idx];
 }
@@ -351,8 +348,7 @@
  *
  * Log format parsing taken from the long-dead utils/Log.cpp.
  */
-static void showLog(LogState* state, int logPrio, const char* tag,
-                    const char* msg) {
+static void showLog(LogState* state, int logPrio, const char* tag, const char* msg) {
 #if !defined(_WIN32)
   struct tm tmBuf;
 #endif
@@ -397,19 +393,16 @@
 
   switch (state->outputFormat) {
     case FORMAT_TAG:
-      prefixLen =
-          snprintf(prefixBuf, sizeof(prefixBuf), "%c/%-8s: ", priChar, tag);
+      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c/%-8s: ", priChar, tag);
       strcpy(suffixBuf, "\n");
       suffixLen = 1;
       break;
     case FORMAT_PROCESS:
-      prefixLen =
-          snprintf(prefixBuf, sizeof(prefixBuf), "%c(%5d) ", priChar, pid);
+      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c(%5d) ", priChar, pid);
       suffixLen = snprintf(suffixBuf, sizeof(suffixBuf), "  (%s)\n", tag);
       break;
     case FORMAT_THREAD:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c(%5d:%5d) ",
-                           priChar, pid, tid);
+      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c(%5d:%5d) ", priChar, pid, tid);
       strcpy(suffixBuf, "\n");
       suffixLen = 1;
       break;
@@ -420,28 +413,24 @@
       suffixLen = 1;
       break;
     case FORMAT_TIME:
-      prefixLen =
-          snprintf(prefixBuf, sizeof(prefixBuf), "%s %-8s\n\t", timeBuf, tag);
+      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%s %-8s\n\t", timeBuf, tag);
       strcpy(suffixBuf, "\n");
       suffixLen = 1;
       break;
     case FORMAT_THREADTIME:
-      prefixLen =
-          snprintf(prefixBuf, sizeof(prefixBuf), "%s %5d %5d %c %-8s \n\t",
-                   timeBuf, pid, tid, priChar, tag);
+      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%s %5d %5d %c %-8s \n\t", timeBuf, pid,
+                           tid, priChar, tag);
       strcpy(suffixBuf, "\n");
       suffixLen = 1;
       break;
     case FORMAT_LONG:
-      prefixLen =
-          snprintf(prefixBuf, sizeof(prefixBuf), "[ %s %5d:%5d %c/%-8s ]\n",
-                   timeBuf, pid, tid, priChar, tag);
+      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "[ %s %5d:%5d %c/%-8s ]\n", timeBuf, pid,
+                           tid, priChar, tag);
       strcpy(suffixBuf, "\n\n");
       suffixLen = 2;
       break;
     default:
-      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf),
-                           "%c/%-8s(%5d): ", priChar, tag, pid);
+      prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c/%-8s(%5d): ", priChar, tag, pid);
       strcpy(suffixBuf, "\n");
       suffixLen = 1;
       break;
@@ -559,8 +548,7 @@
  *  tag (N bytes -- null-terminated ASCII string)
  *  message (N bytes -- null-terminated ASCII string)
  */
-LIBLOG_HIDDEN ssize_t fakeLogWritev(int fd, const struct iovec* vector,
-                                    int count) {
+LIBLOG_HIDDEN ssize_t fakeLogWritev(int fd, const struct iovec* vector, int count) {
   LogState* state;
 
   /* Make sure that no-one frees the LogState while we're using it.
@@ -572,17 +560,24 @@
   state = fdToLogState(fd);
   if (state == NULL) {
     errno = EBADF;
-    goto error;
+    unlock();
+    return -1;
   }
 
   if (state->isBinary) {
     TRACE("%s: ignoring binary log\n", state->debugName);
-    goto bail;
+    unlock();
+    int len = 0;
+    for (int i = 0; i < count; ++i) {
+      len += vector[i].iov_len;
+    }
+    return len;
   }
 
   if (count != 3) {
     TRACE("%s: writevLog with count=%d not expected\n", state->debugName, count);
-    goto error;
+    unlock();
+    return -1;
   }
 
   /* pull out the three fields */
@@ -598,7 +593,6 @@
       break; /* reached end of configured values */
 
     if (strcmp(state->tagSet[i].tag, tag) == 0) {
-      // TRACE("MATCH tag '%s'\n", tag);
       minPrio = state->tagSet[i].minPriority;
       break;
     }
@@ -606,21 +600,14 @@
 
   if (logPrio >= minPrio) {
     showLog(state, logPrio, tag, msg);
-  } else {
-    // TRACE("+++ NOLOG(%d): %s %s", logPrio, tag, msg);
   }
 
-bail:
   unlock();
   int len = 0;
   for (i = 0; i < count; ++i) {
     len += vector[i].iov_len;
   }
   return len;
-
-error:
-  unlock();
-  return -1;
 }
 
 /*
@@ -663,22 +650,16 @@
   return fd;
 }
 
-LIBLOG_HIDDEN ssize_t __send_log_msg(char* buf __unused,
-                                     size_t buf_size __unused) {
+LIBLOG_HIDDEN ssize_t __send_log_msg(char*, size_t) {
   return -ENODEV;
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_is_loggable(int prio,
-                                                const char* tag __unused,
-                                                int def) {
+LIBLOG_ABI_PUBLIC int __android_log_is_loggable(int prio, const char*, int def) {
   int logLevel = def;
   return logLevel >= 0 && prio >= logLevel;
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_is_loggable_len(int prio,
-                                                    const char* tag __unused,
-                                                    size_t len __unused,
-                                                    int def) {
+LIBLOG_ABI_PUBLIC int __android_log_is_loggable_len(int prio, const char*, size_t, int def) {
   int logLevel = def;
   return logLevel >= 0 && prio >= logLevel;
 }
diff --git a/liblog/fake_log_device.h b/liblog/fake_log_device.h
index 7b0e745..ef0beb6 100644
--- a/liblog/fake_log_device.h
+++ b/liblog/fake_log_device.h
@@ -14,18 +14,25 @@
  * limitations under the License.
  */
 
-#ifndef _LIBLOG_FAKE_LOG_DEVICE_H
-#define _LIBLOG_FAKE_LOG_DEVICE_H
+#pragma once
 
 #include <sys/types.h>
 
 #include "log_portability.h"
+#include "uio.h"
 
 struct iovec;
 
+__BEGIN_DECLS
+
 LIBLOG_HIDDEN int fakeLogOpen(const char* pathName);
 LIBLOG_HIDDEN int fakeLogClose(int fd);
 LIBLOG_HIDDEN ssize_t fakeLogWritev(int fd, const struct iovec* vector,
                                     int count);
 
-#endif  // _LIBLOG_FAKE_LOG_DEVICE_H
+LIBLOG_HIDDEN ssize_t __send_log_msg(char*, size_t);
+LIBLOG_ABI_PUBLIC int __android_log_is_loggable(int prio, const char*, int def);
+LIBLOG_ABI_PUBLIC int __android_log_is_loggable_len(int prio, const char*, size_t, int def);
+LIBLOG_ABI_PRIVATE int __android_log_is_debuggable();
+
+__END_DECLS
diff --git a/liblog/fake_writer.c b/liblog/fake_writer.cpp
similarity index 82%
rename from liblog/fake_writer.c
rename to liblog/fake_writer.cpp
index 403dc72..46d171b 100644
--- a/liblog/fake_writer.c
+++ b/liblog/fake_writer.cpp
@@ -27,19 +27,18 @@
 
 static int fakeOpen();
 static void fakeClose();
-static int fakeWrite(log_id_t log_id, struct timespec* ts, struct iovec* vec,
-                     size_t nr);
+static int fakeWrite(log_id_t log_id, struct timespec* ts, struct iovec* vec, size_t nr);
 
-static int logFds[(int)LOG_ID_MAX] = { -1, -1, -1, -1, -1, -1 };
+static int logFds[(int)LOG_ID_MAX] = {-1, -1, -1, -1, -1, -1};
 
 LIBLOG_HIDDEN struct android_log_transport_write fakeLoggerWrite = {
-  .node = { &fakeLoggerWrite.node, &fakeLoggerWrite.node },
-  .context.priv = &logFds,
-  .name = "fake",
-  .available = NULL,
-  .open = fakeOpen,
-  .close = fakeClose,
-  .write = fakeWrite,
+    .node = {&fakeLoggerWrite.node, &fakeLoggerWrite.node},
+    .context.priv = &logFds,
+    .name = "fake",
+    .available = NULL,
+    .open = fakeOpen,
+    .close = fakeClose,
+    .write = fakeWrite,
 };
 
 static int fakeOpen() {
@@ -54,7 +53,7 @@
     if (logFds[i] >= 0) {
       continue;
     }
-    snprintf(buf, sizeof(buf), "/dev/log_%s", android_log_id_to_name(i));
+    snprintf(buf, sizeof(buf), "/dev/log_%s", android_log_id_to_name(static_cast<log_id_t>(i)));
     logFds[i] = fakeLogOpen(buf);
     if (logFds[i] < 0) {
       fprintf(stderr, "fakeLogOpen(%s) failed\n", buf);
@@ -72,8 +71,7 @@
   }
 }
 
-static int fakeWrite(log_id_t log_id, struct timespec* ts __unused,
-                     struct iovec* vec, size_t nr) {
+static int fakeWrite(log_id_t log_id, struct timespec*, struct iovec* vec, size_t nr) {
   ssize_t ret;
   size_t i;
   int logFd, len;
diff --git a/liblog/include/log/event_tag_map.h b/liblog/include/log/event_tag_map.h
index 8dd9157..2687b3a 100644
--- a/liblog/include/log/event_tag_map.h
+++ b/liblog/include/log/event_tag_map.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_CUTILS_EVENTTAGMAP_H
-#define _LIBS_CUTILS_EVENTTAGMAP_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -69,5 +68,3 @@
 #ifdef __cplusplus
 }
 #endif
-
-#endif /*_LIBS_CUTILS_EVENTTAGMAP_H*/
diff --git a/liblog/include/log/log.h b/liblog/include/log/log.h
index 3813e6e..5928649 100644
--- a/liblog/include/log/log.h
+++ b/liblog/include/log/log.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_LOG_LOG_H
-#define _LIBS_LOG_LOG_H
+#pragma once
 
 /* Too many in the ecosystem assume these are included */
 #if !defined(_WIN32)
@@ -35,7 +34,6 @@
 #include <log/log_safetynet.h>
 #include <log/log_system.h>
 #include <log/log_time.h>
-#include <log/uio.h> /* helper to define iovec for portability */
 
 #ifdef __cplusplus
 extern "C" {
@@ -152,35 +150,12 @@
 
 #ifdef __linux__
 
-#ifndef __ANDROID_USE_LIBLOG_CLOCK_INTERFACE
-#ifndef __ANDROID_API__
-#define __ANDROID_USE_LIBLOG_CLOCK_INTERFACE 1
-#elif __ANDROID_API__ > 22 /* > Lollipop */
-#define __ANDROID_USE_LIBLOG_CLOCK_INTERFACE 1
-#else
-#define __ANDROID_USE_LIBLOG_CLOCK_INTERFACE 0
-#endif
-#endif
-
-#if __ANDROID_USE_LIBLOG_CLOCK_INTERFACE
 clockid_t android_log_clockid(void);
-#endif
 
 #endif /* __linux__ */
 
 /* --------------------------------------------------------------------- */
 
-#ifndef __ANDROID_USE_LIBLOG_CLOSE_INTERFACE
-#ifndef __ANDROID_API__
-#define __ANDROID_USE_LIBLOG_CLOSE_INTERFACE 1
-#elif __ANDROID_API__ > 18 /* > JellyBean */
-#define __ANDROID_USE_LIBLOG_CLOSE_INTERFACE 1
-#else
-#define __ANDROID_USE_LIBLOG_CLOSE_INTERFACE 0
-#endif
-#endif
-
-#if __ANDROID_USE_LIBLOG_CLOSE_INTERFACE
 /*
  * Release any logger resources (a new log write will immediately re-acquire)
  *
@@ -188,54 +163,6 @@
  * all O_CLOEXEC so wil self clean on exec().
  */
 void __android_log_close(void);
-#endif
-
-#ifndef __ANDROID_USE_LIBLOG_RATELIMIT_INTERFACE
-#ifndef __ANDROID_API__
-#define __ANDROID_USE_LIBLOG_RATELIMIT_INTERFACE 1
-#elif __ANDROID_API__ > 25 /* > OC */
-#define __ANDROID_USE_LIBLOG_RATELIMIT_INTERFACE 1
-#else
-#define __ANDROID_USE_LIBLOG_RATELIMIT_INTERFACE 0
-#endif
-#endif
-
-#if __ANDROID_USE_LIBLOG_RATELIMIT_INTERFACE
-
-/*
- * if last is NULL, caller _must_ provide a consistent value for seconds.
- *
- * Return -1 if we can not acquire a lock, which below will permit the logging,
- * error on allowing a log message through.
- */
-int __android_log_ratelimit(time_t seconds, time_t* last);
-
-/*
- * Usage:
- *
- *   // Global default and state
- *   IF_ALOG_RATELIMIT() {
- *      ALOG*(...);
- *   }
- *
- *   // local state, 10 seconds ratelimit
- *   static time_t local_state;
- *   IF_ALOG_RATELIMIT_LOCAL(10, &local_state) {
- *     ALOG*(...);
- *   }
- */
-
-#define IF_ALOG_RATELIMIT() if (__android_log_ratelimit(0, NULL) > 0)
-#define IF_ALOG_RATELIMIT_LOCAL(seconds, state) \
-  if (__android_log_ratelimit(seconds, state) > 0)
-
-#else
-
-/* No ratelimiting as API unsupported */
-#define IF_ALOG_RATELIMIT() if (1)
-#define IF_ALOG_RATELIMIT_LOCAL(...) if (1)
-
-#endif
 
 #if defined(__clang__)
 #pragma clang diagnostic pop
@@ -244,5 +171,3 @@
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _LIBS_LOG_LOG_H */
diff --git a/liblog/include/log/log_event_list.h b/liblog/include/log/log_event_list.h
index 1b7c377..636d417 100644
--- a/liblog/include/log/log_event_list.h
+++ b/liblog/include/log/log_event_list.h
@@ -14,16 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_LOG_EVENT_LIST_H
-#define _LIBS_LOG_EVENT_LIST_H
+#pragma once
 
 #include <errno.h>
 #include <stdint.h>
 
-#if (defined(__cplusplus) && defined(_USING_LIBCXX))
-extern "C++" {
+#ifdef __cplusplus
 #include <string>
-}
 #endif
 
 #include <log/log.h>
@@ -32,18 +29,6 @@
 extern "C" {
 #endif
 
-#ifndef __ANDROID_USE_LIBLOG_EVENT_INTERFACE
-#ifndef __ANDROID_API__
-#define __ANDROID_USE_LIBLOG_EVENT_INTERFACE 1
-#elif __ANDROID_API__ > 23 /* > Marshmallow */
-#define __ANDROID_USE_LIBLOG_EVENT_INTERFACE 1
-#else
-#define __ANDROID_USE_LIBLOG_EVENT_INTERFACE 0
-#endif
-#endif
-
-#if __ANDROID_USE_LIBLOG_EVENT_INTERFACE
-
 /* For manipulating lists of events. */
 
 #define ANDROID_MAX_LIST_NEST_DEPTH 8
@@ -124,8 +109,6 @@
 /* android_log_list C++ helpers */
 extern "C++" {
 class android_log_event_list {
-  friend class __android_log_event_list;
-
  private:
   android_log_context ctx;
   int ret;
@@ -137,10 +120,6 @@
   explicit android_log_event_list(int tag) : ret(0) {
     ctx = create_android_logger(static_cast<uint32_t>(tag));
   }
-  explicit android_log_event_list(log_msg& log_msg) : ret(0) {
-    ctx = create_android_log_parser(log_msg.msg() + sizeof(uint32_t),
-                                    log_msg.entry.len - sizeof(uint32_t));
-  }
   ~android_log_event_list() {
     android_log_destroy(&ctx);
   }
@@ -208,14 +187,12 @@
     return *this;
   }
 
-#if defined(_USING_LIBCXX)
   android_log_event_list& operator<<(const std::string& value) {
     int retval =
         android_log_write_string8_len(ctx, value.data(), value.length());
     if (retval < 0) ret = retval;
     return *this;
   }
-#endif
 
   android_log_event_list& operator<<(float value) {
     int retval = android_log_write_float32(ctx, value);
@@ -269,7 +246,6 @@
     return ret >= 0;
   }
 
-#if defined(_USING_LIBCXX)
   bool AppendString(const std::string& value) {
     int retval =
         android_log_write_string8_len(ctx, value.data(), value.length());
@@ -283,7 +259,6 @@
     if (retval < 0) ret = retval;
     return ret;
   }
-#endif
 
   bool AppendFloat(float value) {
     int retval = android_log_write_float32(ctx, value);
@@ -302,22 +277,11 @@
     if (retval < 0) ret = retval;
     return ret >= 0;
   }
-
-  android_log_list_element read() {
-    return android_log_read_next(ctx);
-  }
-  android_log_list_element peek() {
-    return android_log_peek_next(ctx);
-  }
 };
 }
 #endif
 #endif
 
-#endif /* __ANDROID_USE_LIBLOG_EVENT_INTERFACE */
-
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _LIBS_LOG_EVENT_LIST_H */
diff --git a/liblog/include/log/log_id.h b/liblog/include/log/log_id.h
index c44f5a2..c052a50 100644
--- a/liblog/include/log/log_id.h
+++ b/liblog/include/log/log_id.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_LOG_LOG_ID_H
-#define _LIBS_LOG_LOG_ID_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -62,5 +61,3 @@
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _LIBS_LOG_LOG_ID_H */
diff --git a/liblog/include/log/log_main.h b/liblog/include/log/log_main.h
index 53653de..64791c2 100644
--- a/liblog/include/log/log_main.h
+++ b/liblog/include/log/log_main.h
@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_LOG_LOG_MAIN_H
-#define _LIBS_LOG_LOG_MAIN_H
+#pragma once
 
 #include <stdbool.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
 
 #include <android/log.h>
-#include <sys/cdefs.h>
 
 __BEGIN_DECLS
 
@@ -349,20 +349,6 @@
  *        over Android.
  */
 
-#ifndef __ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE
-#ifndef __ANDROID_API__
-#define __ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE 2
-#elif __ANDROID_API__ > 24 /* > Nougat */
-#define __ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE 2
-#elif __ANDROID_API__ > 22 /* > Lollipop */
-#define __ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE 1
-#else
-#define __ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE 0
-#endif
-#endif
-
-#if __ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE
-
 /*
  * Use the per-tag properties "log.tag.<tagname>" to generate a runtime
  * result of non-zero to expose a log. prio is ANDROID_LOG_VERBOSE to
@@ -370,12 +356,7 @@
  * any other value.
  */
 int __android_log_is_loggable(int prio, const char* tag, int default_prio);
-
-#if __ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE > 1
-#include <sys/types.h>
-
-int __android_log_is_loggable_len(int prio, const char* tag, size_t len,
-                                  int default_prio);
+int __android_log_is_loggable_len(int prio, const char* tag, size_t len, int default_prio);
 
 #if LOG_NDEBUG /* Production */
 #define android_testLog(prio, tag)                                           \
@@ -387,28 +368,8 @@
                                  ANDROID_LOG_VERBOSE) != 0)
 #endif
 
-#else
-
-#if LOG_NDEBUG /* Production */
-#define android_testLog(prio, tag) \
-  (__android_log_is_loggable(prio, tag, ANDROID_LOG_DEBUG) != 0)
-#else
-#define android_testLog(prio, tag) \
-  (__android_log_is_loggable(prio, tag, ANDROID_LOG_VERBOSE) != 0)
-#endif
-
-#endif
-
-#else /* __ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE */
-
-#define android_testLog(prio, tag) (1)
-
-#endif /* !__ANDROID_USE_LIBLOG_LOGGABLE_INTERFACE */
-
 #if defined(__clang__)
 #pragma clang diagnostic pop
 #endif
 
 __END_DECLS
-
-#endif /* _LIBS_LOG_LOG_MAIN_H */
diff --git a/liblog/include/log/log_properties.h b/liblog/include/log/log_properties.h
index 7d398a6..3a8af6d 100644
--- a/liblog/include/log/log_properties.h
+++ b/liblog/include/log/log_properties.h
@@ -7,29 +7,14 @@
 ** General Public License.
 */
 
-#ifndef _LIBS_LOG_PROPERTIES_H
-#define _LIBS_LOG_PROPERTIES_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#ifndef __ANDROID_USE_LIBLOG_IS_DEBUGGABLE_INTERFACE
-#ifndef __ANDROID_API__
-#define __ANDROID_USE_LIBLOG_IS_DEBUGGABLE_INTERFACE 1
-#elif __ANDROID_API__ > 24 /* > Nougat */
-#define __ANDROID_USE_LIBLOG_IS_DEBUGGABLE_INTERFACE 1
-#else
-#define __ANDROID_USE_LIBLOG_IS_DEBUGGABLE_INTERFACE 0
-#endif
-#endif
-
-#if __ANDROID_USE_LIBLOG_IS_DEBUGGABLE_INTERFACE
 int __android_log_is_debuggable();
-#endif
 
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _LIBS_LOG_PROPERTIES_H */
diff --git a/liblog/include/log/log_radio.h b/liblog/include/log/log_radio.h
index bd629fe..8b8a362 100644
--- a/liblog/include/log/log_radio.h
+++ b/liblog/include/log/log_radio.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_LOG_LOG_RADIO_H
-#define _LIBS_LOG_LOG_RADIO_H
+#pragma once
 
 #include <android/log.h>
 #include <log/log_id.h>
@@ -140,5 +139,3 @@
                                         LOG_TAG, __VA_ARGS__))           \
        : (void)0)
 #endif
-
-#endif /* _LIBS_LOG_LOG_RADIO_H */
diff --git a/liblog/include/log/log_read.h b/liblog/include/log/log_read.h
index 93b9d4e..fdef306 100644
--- a/liblog/include/log/log_read.h
+++ b/liblog/include/log/log_read.h
@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_LOG_LOG_READ_H
-#define _LIBS_LOG_LOG_READ_H
+#pragma once
+
+#include <sys/types.h>
 
 /* deal with possible sys/cdefs.h conflict with fcntl.h */
 #ifdef __unused
@@ -47,6 +48,8 @@
  * access to raw information, or parsing is an issue.
  */
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wzero-length-array"
 /*
  * The userspace structure for version 1 of the logger_entry ABI.
  */
@@ -59,9 +62,7 @@
   int32_t tid;    /* generating process's tid */
   int32_t sec;    /* seconds since Epoch */
   int32_t nsec;   /* nanoseconds */
-#ifndef __cplusplus
   char msg[0]; /* the entry's payload */
-#endif
 };
 #endif
 
@@ -78,9 +79,7 @@
   int32_t sec;       /* seconds since Epoch */
   int32_t nsec;      /* nanoseconds */
   uint32_t euid;     /* effective UID of logger */
-#ifndef __cplusplus
   char msg[0]; /* the entry's payload */
-#endif
 } __attribute__((__packed__));
 #endif
 
@@ -97,9 +96,7 @@
   int32_t sec;       /* seconds since Epoch */
   int32_t nsec;      /* nanoseconds */
   uint32_t lid;      /* log id of the payload */
-#ifndef __cplusplus
   char msg[0]; /* the entry's payload */
-#endif
 } __attribute__((__packed__));
 #endif
 
@@ -117,11 +114,10 @@
   uint32_t nsec;     /* nanoseconds */
   uint32_t lid;      /* log id of the payload, bottom 4 bits currently */
   uint32_t uid;      /* generating process's uid */
-#ifndef __cplusplus
   char msg[0]; /* the entry's payload */
-#endif
 };
 #endif
+#pragma clang diagnostic pop
 
 /*
  * The maximum size of the log entry payload that can be
@@ -197,22 +193,6 @@
 };
 #endif
 
-#ifndef __ANDROID_USE_LIBLOG_READER_INTERFACE
-#ifndef __ANDROID_API__
-#define __ANDROID_USE_LIBLOG_READER_INTERFACE 3
-#elif __ANDROID_API__ > 23 /* > Marshmallow */
-#define __ANDROID_USE_LIBLOG_READER_INTERFACE 3
-#elif __ANDROID_API__ > 22 /* > Lollipop */
-#define __ANDROID_USE_LIBLOG_READER_INTERFACE 2
-#elif __ANDROID_API__ > 19 /* > KitKat */
-#define __ANDROID_USE_LIBLOG_READER_INTERFACE 1
-#else
-#define __ANDROID_USE_LIBLOG_READER_INTERFACE 0
-#endif
-#endif
-
-#if __ANDROID_USE_LIBLOG_READER_INTERFACE
-
 struct logger;
 
 log_id_t android_logger_get_id(struct logger* logger);
@@ -225,14 +205,12 @@
 
 struct logger_list;
 
-#if __ANDROID_USE_LIBLOG_READER_INTERFACE > 1
 ssize_t android_logger_get_statistics(struct logger_list* logger_list,
                                       char* buf, size_t len);
 ssize_t android_logger_get_prune_list(struct logger_list* logger_list,
                                       char* buf, size_t len);
 int android_logger_set_prune_list(struct logger_list* logger_list, char* buf,
                                   size_t len);
-#endif
 
 #define ANDROID_LOG_RDONLY O_RDONLY
 #define ANDROID_LOG_WRONLY O_WRONLY
@@ -243,13 +221,9 @@
 #else
 #define ANDROID_LOG_NONBLOCK O_NONBLOCK
 #endif
-#if __ANDROID_USE_LIBLOG_READER_INTERFACE > 2
 #define ANDROID_LOG_WRAP 0x40000000 /* Block until buffer about to wrap */
 #define ANDROID_LOG_WRAP_DEFAULT_TIMEOUT 7200 /* 2 hour default */
-#endif
-#if __ANDROID_USE_LIBLOG_READER_INTERFACE > 1
 #define ANDROID_LOG_PSTORE 0x80000000
-#endif
 
 struct logger_list* android_logger_list_alloc(int mode, unsigned int tail,
                                               pid_t pid);
@@ -268,10 +242,6 @@
                                              unsigned int tail, pid_t pid);
 #define android_logger_list_close android_logger_list_free
 
-#endif /* __ANDROID_USE_LIBLOG_READER_INTERFACE */
-
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _LIBS_LOG_LOG_H */
diff --git a/liblog/include/log/log_safetynet.h b/liblog/include/log/log_safetynet.h
index 07e8c8a..d3e9b19 100644
--- a/liblog/include/log/log_safetynet.h
+++ b/liblog/include/log/log_safetynet.h
@@ -7,8 +7,7 @@
 ** General Public License.
 */
 
-#ifndef _LIBS_LOG_SAFETYNET_H
-#define _LIBS_LOG_SAFETYNET_H
+#pragma once
 
 #include <stdint.h>
 
@@ -16,18 +15,6 @@
 extern "C" {
 #endif
 
-#ifndef _ANDROID_USE_LIBLOG_SAFETYNET_INTERFACE
-#ifndef __ANDROID_API__
-#define __ANDROID_USE_LIBLOG_SAFETYNET_INTERFACE 1
-#elif __ANDROID_API__ > 22 /* > Lollipop */
-#define __ANDROID_USE_LIBLOG_SAFETYNET_INTERFACE 1
-#else
-#define __ANDROID_USE_LIBLOG_SAFETYNET_INTERFACE 0
-#endif
-#endif
-
-#if __ANDROID_USE_LIBLOG_SAFETYNET_INTERFACE
-
 #define android_errorWriteLog(tag, subTag) \
   __android_log_error_write(tag, subTag, -1, NULL, 0)
 
@@ -37,10 +24,6 @@
 int __android_log_error_write(int tag, const char* subTag, int32_t uid,
                               const char* data, uint32_t dataLen);
 
-#endif /* __ANDROID_USE_LIBLOG_SAFETYNET_INTERFACE */
-
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _LIBS_LOG_SAFETYNET_H */
diff --git a/liblog/include/log/log_system.h b/liblog/include/log/log_system.h
index 3b5ae22..eaec741 100644
--- a/liblog/include/log/log_system.h
+++ b/liblog/include/log/log_system.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_LOG_LOG_SYSTEM_H
-#define _LIBS_LOG_LOG_SYSTEM_H
+#pragma once
 
 #include <android/log.h>
 #include <log/log_id.h>
@@ -138,5 +137,3 @@
                                         LOG_TAG, __VA_ARGS__))            \
        : (void)0)
 #endif
-
-#endif /* _LIBS_LOG_LOG_SYSTEM_H */
diff --git a/liblog/include/log/log_time.h b/liblog/include/log/log_time.h
index 309f5d1..09c9910 100644
--- a/liblog/include/log/log_time.h
+++ b/liblog/include/log/log_time.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_LOG_LOG_TIME_H
-#define _LIBS_LOG_LOG_TIME_H
+#pragma once
 
 #include <stdint.h>
 #include <time.h>
@@ -34,6 +33,8 @@
 
 #ifdef __cplusplus
 
+extern "C" {
+
 /*
  * NB: we did NOT define a copy constructor. This will result in structure
  * no longer being compatible with pass-by-value which is desired
@@ -41,25 +42,19 @@
  */
 struct log_time {
  public:
-  uint32_t tv_sec; /* good to Feb 5 2106 */
-  uint32_t tv_nsec;
+  uint32_t tv_sec = 0; /* good to Feb 5 2106 */
+  uint32_t tv_nsec = 0;
 
   static const uint32_t tv_sec_max = 0xFFFFFFFFUL;
   static const uint32_t tv_nsec_max = 999999999UL;
+  static const timespec EPOCH;
 
-  log_time(const timespec& T)
-      : tv_sec(static_cast<uint32_t>(T.tv_sec)),
-        tv_nsec(static_cast<uint32_t>(T.tv_nsec)) {
-  }
+  log_time() {}
+  explicit log_time(const timespec& T)
+      : tv_sec(static_cast<uint32_t>(T.tv_sec)), tv_nsec(static_cast<uint32_t>(T.tv_nsec)) {}
   explicit log_time(uint32_t sec, uint32_t nsec = 0)
       : tv_sec(sec), tv_nsec(nsec) {
   }
-#ifdef _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
-#define __struct_log_time_private_defined
-  static const timespec EPOCH;
-#endif
-  log_time() {
-  }
 #ifdef __linux__
   explicit log_time(clockid_t id) {
     timespec T;
@@ -103,7 +98,6 @@
     return !(*this > T);
   }
 
-#ifdef _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
   log_time operator-=(const timespec& T);
   log_time operator-(const timespec& T) const {
     log_time local(*this);
@@ -114,7 +108,6 @@
     log_time local(*this);
     return local += T;
   }
-#endif
 
   /* log_time */
   bool operator==(const log_time& T) const {
@@ -138,7 +131,6 @@
     return !(*this > T);
   }
 
-#ifdef _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
   log_time operator-=(const log_time& T);
   log_time operator-(const log_time& T) const {
     log_time local(*this);
@@ -149,7 +141,6 @@
     log_time local(*this);
     return local += T;
   }
-#endif
 
   uint64_t nsec() const {
     return static_cast<uint64_t>(tv_sec) * NS_PER_SEC + tv_nsec;
@@ -163,13 +154,12 @@
            tv_nsec / (NS_PER_SEC / MS_PER_SEC);
   }
 
-#ifdef _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
   static const char default_format[];
 
   /* Add %#q for the fraction of a second to the standard library functions */
   char* strptime(const char* s, const char* format = default_format);
-#endif
 } __attribute__((__packed__));
+}
 
 #else /* __cplusplus */
 
@@ -181,5 +171,3 @@
 #endif /* __cplusplus */
 
 #endif /* __struct_log_time_defined */
-
-#endif /* _LIBS_LOG_LOG_TIME_H */
diff --git a/liblog/include/log/log_transport.h b/liblog/include/log/log_transport.h
index 8b02995..b48761a 100644
--- a/liblog/include/log/log_transport.h
+++ b/liblog/include/log/log_transport.h
@@ -7,8 +7,7 @@
 ** General Public License.
 */
 
-#ifndef _LIBS_LOG_TRANSPORT_H
-#define _LIBS_LOG_TRANSPORT_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -33,5 +32,3 @@
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _LIBS_LOG_TRANSPORT_H */
diff --git a/liblog/include/log/logd.h b/liblog/include/log/logd.h
deleted file mode 100644
index 77400ca..0000000
--- a/liblog/include/log/logd.h
+++ /dev/null
@@ -1,5 +0,0 @@
-#ifndef _LIBS_LOG_LOGD_H
-#define _LIBS_LOG_LOGD_H
-#include <log/log.h>
-#warning "Deprecated: do not include log/logd.h, use log/log.h instead"
-#endif /*_LIBS_LOG_LOGD_H*/
diff --git a/liblog/include/log/logger.h b/liblog/include/log/logger.h
deleted file mode 100644
index 1bf2d17..0000000
--- a/liblog/include/log/logger.h
+++ /dev/null
@@ -1,5 +0,0 @@
-#ifndef _LIBS_LOG_LOGGER_H
-#define _LIBS_LOG_LOGGER_H
-#include <log/log.h>
-#warning "Deprecated: do not include log/logger.h, use log/log.h instead"
-#endif /*_LIBS_LOG_LOGGER_H*/
diff --git a/liblog/include/log/logprint.h b/liblog/include/log/logprint.h
index ca58bc7..8f4b187 100644
--- a/liblog/include/log/logprint.h
+++ b/liblog/include/log/logprint.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LOGPRINT_H
-#define _LOGPRINT_H
+#pragma once
 
 #include <pthread.h>
 
@@ -158,5 +157,3 @@
 #ifdef __cplusplus
 }
 #endif
-
-#endif /*_LOGPRINT_H*/
diff --git a/liblog/include/private/android_logger.h b/liblog/include/private/android_logger.h
index b927b46..5e04148 100644
--- a/liblog/include/private/android_logger.h
+++ b/liblog/include/private/android_logger.h
@@ -16,8 +16,7 @@
 
 /* This file is used to define the internal protocol for the Android Logger */
 
-#ifndef _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
-#define _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
+#pragma once
 
 /* Android private interfaces */
 
@@ -25,10 +24,8 @@
 #include <stdint.h>
 #include <sys/types.h>
 
-#if (defined(__cplusplus) && defined(_USING_LIBCXX))
-extern "C++" {
+#ifdef __cplusplus
 #include <string>
-}
 #endif
 
 #include <log/log.h>
@@ -153,41 +150,6 @@
 /* Retrieve the composed event buffer */
 int android_log_write_list_buffer(android_log_context ctx, const char** msg);
 
-#ifdef __cplusplus
-#ifdef __class_android_log_event_list_defined
-#ifndef __class_android_log_event_list_private_defined
-#define __class_android_log_event_list_private_defined
-/* android_log_context C++ helpers */
-extern "C++" {
-class __android_log_event_list : public android_log_event_list {
-  __android_log_event_list(const android_log_event_list&) = delete;
-  void operator=(const __android_log_event_list&) = delete;
-
- public:
-  explicit __android_log_event_list(int tag) : android_log_event_list(tag) {
-  }
-  explicit __android_log_event_list(log_msg& log_msg)
-      : android_log_event_list(log_msg) {
-  }
-
-#if defined(_USING_LIBCXX)
-  operator std::string() {
-    if (ret) return std::string("");
-    const char* cp = nullptr;
-    ssize_t len = android_log_write_list_buffer(ctx, &cp);
-    if (len < 0) ret = len;
-    if (!cp || (len <= 0)) return std::string("");
-    return std::string(cp, len);
-  }
-#endif
-};
-}
-#endif
-#endif
-#endif
-
 #if defined(__cplusplus)
 }
 #endif
-
-#endif /* _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_ */
diff --git a/liblog/include_vndk/log/log_event_list.h b/liblog/include_vndk/log/log_event_list.h
index 9f74534..1f3dd37 100644
--- a/liblog/include_vndk/log/log_event_list.h
+++ b/liblog/include_vndk/log/log_event_list.h
@@ -27,8 +27,6 @@
 extern "C" {
 #endif
 
-#define __ANDROID_USE_LIBLOG_EVENT_INTERFACE 1
-
 /*
  * The opaque context used to manipulate lists of events.
  */
diff --git a/liblog/log_event_list.c b/liblog/log_event_list.cpp
similarity index 88%
rename from liblog/log_event_list.c
rename to liblog/log_event_list.cpp
index 14002ce..088ea94 100644
--- a/liblog/log_event_list.c
+++ b/liblog/log_event_list.cpp
@@ -29,21 +29,26 @@
 
 #define MAX_EVENT_PAYLOAD (LOGGER_ENTRY_MAX_PAYLOAD - sizeof(int32_t))
 
-typedef struct {
+enum ReadWriteFlag {
+  kAndroidLoggerRead = 1,
+  kAndroidLoggerWrite = 2,
+};
+
+struct android_log_context_internal {
   uint32_t tag;
-  unsigned pos; /* Read/write position into buffer */
+  unsigned pos;                                    /* Read/write position into buffer */
   unsigned count[ANDROID_MAX_LIST_NEST_DEPTH + 1]; /* Number of elements   */
   unsigned list[ANDROID_MAX_LIST_NEST_DEPTH + 1];  /* pos for list counter */
   unsigned list_nest_depth;
   unsigned len; /* Length or raw buffer. */
   bool overflow;
   bool list_stop; /* next call decrement list_nest_depth and issue a stop */
-  enum {
-    kAndroidLoggerRead = 1,
-    kAndroidLoggerWrite = 2,
-  } read_write_flag;
+  ReadWriteFlag read_write_flag;
   uint8_t storage[LOGGER_ENTRY_MAX_PAYLOAD];
-} android_log_context_internal;
+};
+
+// TODO(tomcherry): real C++ structs.
+typedef struct android_log_context_internal android_log_context_internal;
 
 static void init_context(android_log_context_internal* context, uint32_t tag) {
   size_t needed;
@@ -60,8 +65,8 @@
   context->pos += needed;
 }
 
-static void init_parser_context(android_log_context_internal* context,
-                                const char* msg, size_t len) {
+static void init_parser_context(android_log_context_internal* context, const char* msg,
+                                size_t len) {
   len = (len <= MAX_EVENT_PAYLOAD) ? len : MAX_EVENT_PAYLOAD;
   context->len = len;
   memcpy(context->storage, msg, len);
@@ -71,7 +76,8 @@
 LIBLOG_ABI_PUBLIC android_log_context create_android_logger(uint32_t tag) {
   android_log_context_internal* context;
 
-  context = calloc(1, sizeof(android_log_context_internal));
+  context =
+      static_cast<android_log_context_internal*>(calloc(1, sizeof(android_log_context_internal)));
   if (!context) {
     return NULL;
   }
@@ -80,12 +86,12 @@
   return (android_log_context)context;
 }
 
-LIBLOG_ABI_PUBLIC android_log_context create_android_log_parser(const char* msg,
-                                                                size_t len) {
+LIBLOG_ABI_PUBLIC android_log_context create_android_log_parser(const char* msg, size_t len) {
   android_log_context_internal* context;
   size_t i;
 
-  context = calloc(1, sizeof(android_log_context_internal));
+  context =
+      static_cast<android_log_context_internal*>(calloc(1, sizeof(android_log_context_internal)));
   if (!context) {
     return NULL;
   }
@@ -123,8 +129,8 @@
   return 0;
 }
 
-LIBLOG_ABI_PUBLIC int android_log_parser_reset(android_log_context ctx,
-                                               const char* msg, size_t len) {
+LIBLOG_ABI_PUBLIC int android_log_parser_reset(android_log_context ctx, const char* msg,
+                                               size_t len) {
   android_log_context_internal* context;
 
   context = (android_log_context_internal*)ctx;
@@ -138,7 +144,6 @@
   return 0;
 }
 
-
 LIBLOG_ABI_PUBLIC int android_log_write_list_begin(android_log_context ctx) {
   size_t needed;
   android_log_context_internal* context;
@@ -180,8 +185,7 @@
   buf[3] = (val >> 24) & 0xFF;
 }
 
-LIBLOG_ABI_PUBLIC int android_log_write_int32(android_log_context ctx,
-                                              int32_t value) {
+LIBLOG_ABI_PUBLIC int android_log_write_int32(android_log_context ctx, int32_t value) {
   size_t needed;
   android_log_context_internal* context;
 
@@ -215,8 +219,7 @@
   buf[7] = (val >> 56) & 0xFF;
 }
 
-LIBLOG_ABI_PUBLIC int android_log_write_int64(android_log_context ctx,
-                                              int64_t value) {
+LIBLOG_ABI_PUBLIC int android_log_write_int64(android_log_context ctx, int64_t value) {
   size_t needed;
   android_log_context_internal* context;
 
@@ -239,8 +242,7 @@
   return 0;
 }
 
-LIBLOG_ABI_PUBLIC int android_log_write_string8_len(android_log_context ctx,
-                                                    const char* value,
+LIBLOG_ABI_PUBLIC int android_log_write_string8_len(android_log_context ctx, const char* value,
                                                     size_t maxlen) {
   size_t needed;
   ssize_t len;
@@ -276,13 +278,11 @@
   return len;
 }
 
-LIBLOG_ABI_PUBLIC int android_log_write_string8(android_log_context ctx,
-                                                const char* value) {
+LIBLOG_ABI_PUBLIC int android_log_write_string8(android_log_context ctx, const char* value) {
   return android_log_write_string8_len(ctx, value, MAX_EVENT_PAYLOAD);
 }
 
-LIBLOG_ABI_PUBLIC int android_log_write_float32(android_log_context ctx,
-                                                float value) {
+LIBLOG_ABI_PUBLIC int android_log_write_float32(android_log_context ctx, float value) {
   size_t needed;
   uint32_t ivalue;
   android_log_context_internal* context;
@@ -337,8 +337,7 @@
 /*
  * Logs the list of elements to the event log.
  */
-LIBLOG_ABI_PUBLIC int android_log_write_list(android_log_context ctx,
-                                             log_id_t id) {
+LIBLOG_ABI_PUBLIC int android_log_write_list(android_log_context ctx, log_id_t id) {
   android_log_context_internal* context;
   const char* msg;
   ssize_t len;
@@ -368,13 +367,11 @@
   }
   return (id == LOG_ID_EVENTS)
              ? __android_log_bwrite(context->tag, msg, len)
-             : ((id == LOG_ID_STATS)
-                    ? __android_log_stats_bwrite(context->tag, msg, len)
-                    : __android_log_security_bwrite(context->tag, msg, len));
+             : ((id == LOG_ID_STATS) ? __android_log_stats_bwrite(context->tag, msg, len)
+                                     : __android_log_security_bwrite(context->tag, msg, len));
 }
 
-LIBLOG_ABI_PRIVATE int android_log_write_list_buffer(android_log_context ctx,
-                                                     const char** buffer) {
+LIBLOG_ABI_PRIVATE int android_log_write_list_buffer(android_log_context ctx, const char** buffer) {
   android_log_context_internal* context;
   const char* msg;
   ssize_t len;
@@ -428,8 +425,7 @@
  * this and continues to call this function, the behavior is undefined
  * (although it won't crash).
  */
-static android_log_list_element android_log_read_next_internal(
-    android_log_context ctx, int peek) {
+static android_log_list_element android_log_read_next_internal(android_log_context ctx, int peek) {
   android_log_list_element elem;
   unsigned pos;
   android_log_context_internal* context;
@@ -444,9 +440,9 @@
       (context->count[context->list_nest_depth] >=
        (MAX_EVENT_PAYLOAD / (sizeof(uint8_t) + sizeof(uint8_t))))) {
     elem.type = EVENT_TYPE_UNKNOWN;
-    if (context && (context->list_stop ||
-                    ((context->list_nest_depth <= ANDROID_MAX_LIST_NEST_DEPTH) &&
-                     !context->count[context->list_nest_depth]))) {
+    if (context &&
+        (context->list_stop || ((context->list_nest_depth <= ANDROID_MAX_LIST_NEST_DEPTH) &&
+                                !context->count[context->list_nest_depth]))) {
       elem.type = EVENT_TYPE_LIST_STOP;
     }
     elem.complete = true;
@@ -460,9 +456,8 @@
   pos = context->pos;
   if (context->list_stop) {
     elem.type = EVENT_TYPE_LIST_STOP;
-    elem.complete = !context->count[0] &&
-                    (!context->list_nest_depth ||
-                     ((context->list_nest_depth == 1) && !context->count[1]));
+    elem.complete = !context->count[0] && (!context->list_nest_depth ||
+                                           ((context->list_nest_depth == 1) && !context->count[1]));
     if (!peek) {
       /* Suck in superfluous stop */
       if (context->storage[pos] == EVENT_TYPE_LIST_STOP) {
@@ -485,7 +480,7 @@
     return elem;
   }
 
-  elem.type = context->storage[pos++];
+  elem.type = static_cast<AndroidEventLogType>(context->storage[pos++]);
   switch ((int)elem.type) {
     case EVENT_TYPE_FLOAT:
     /* Rely on union to translate elem.data.int32 into elem.data.float32 */
@@ -598,12 +593,10 @@
   }
 }
 
-LIBLOG_ABI_PUBLIC android_log_list_element
-android_log_read_next(android_log_context ctx) {
+LIBLOG_ABI_PUBLIC android_log_list_element android_log_read_next(android_log_context ctx) {
   return android_log_read_next_internal(ctx, 0);
 }
 
-LIBLOG_ABI_PUBLIC android_log_list_element
-android_log_peek_next(android_log_context ctx) {
+LIBLOG_ABI_PUBLIC android_log_list_element android_log_peek_next(android_log_context ctx) {
   return android_log_read_next_internal(ctx, 1);
 }
diff --git a/liblog/log_event_write.c b/liblog/log_event_write.cpp
similarity index 89%
rename from liblog/log_event_write.c
rename to liblog/log_event_write.cpp
index 45a6f37..e644a3b 100644
--- a/liblog/log_event_write.c
+++ b/liblog/log_event_write.cpp
@@ -24,9 +24,8 @@
 
 #define MAX_SUBTAG_LEN 32
 
-LIBLOG_ABI_PUBLIC int __android_log_error_write(int tag, const char* subTag,
-                                                int32_t uid, const char* data,
-                                                uint32_t dataLen) {
+LIBLOG_ABI_PUBLIC int __android_log_error_write(int tag, const char* subTag, int32_t uid,
+                                                const char* data, uint32_t dataLen) {
   int ret = -EINVAL;
 
   if (subTag && (data || !dataLen)) {
diff --git a/liblog/log_portability.h b/liblog/log_portability.h
index 88805c7..b9fb1d2 100644
--- a/liblog/log_portability.h
+++ b/liblog/log_portability.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBLOG_PORTABILITY_H__
-#define _LIBLOG_PORTABILITY_H__
+#pragma once
 
 #include <sys/cdefs.h>
 #include <unistd.h>
@@ -46,7 +45,7 @@
 #if defined(_WIN32)
 #define LIBLOG_WEAK static /* Accept that it is totally private */
 #else
-#define LIBLOG_WEAK __attribute__((weak, visibility("default")))
+#define LIBLOG_WEAK extern "C" __attribute__((weak, visibility("default")))
 #endif
 
 /* possible missing definitions in sys/cdefs.h */
@@ -62,11 +61,6 @@
 #endif
 #endif
 
-/* Unused argument. For C code only, remove symbol name for C++ */
-#ifndef __unused
-#define __unused __attribute__((__unused__))
-#endif
-
 /* possible missing definitions in unistd.h */
 
 #ifndef TEMP_FAILURE_RETRY
@@ -80,5 +74,3 @@
     _rc;                                   \
   })
 #endif
-
-#endif /* _LIBLOG_PORTABILITY_H__ */
diff --git a/liblog/log_ratelimit.cpp b/liblog/log_ratelimit.cpp
deleted file mode 100644
index 33770dd..0000000
--- a/liblog/log_ratelimit.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
-** Copyright 2016, 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 <errno.h>
-#include <pthread.h>
-#include <time.h>
-
-#include <log/log.h>
-
-#include "log_portability.h"
-
-// Global default if 'last' argument in __android_log_ratelimit is NULL
-static time_t g_last_clock;
-// Global above can not deal well with callers playing games with the
-// seconds argument, so we will also hold on to the maximum value
-// ever provided and use that to gain consistency.  If the caller
-// provides their own 'last' argument, then they can play such games
-// of varying the 'seconds' argument to their pleasure.
-static time_t g_last_seconds;
-static const time_t last_seconds_default = 10;
-static const time_t last_seconds_max = 24 * 60 * 60;  // maximum of a day
-static const time_t last_seconds_min = 2;             // granularity
-// Lock to protect last_clock and last_seconds, but also 'last'
-// argument (not NULL) as supplied to __android_log_ratelimit.
-static pthread_mutex_t lock_ratelimit = PTHREAD_MUTEX_INITIALIZER;
-
-// if last is NULL, caller _must_ provide a consistent value for
-// seconds, otherwise we will take the maximum ever issued and hold
-// on to that.  Preserves value of non-zero errno.  Return -1 if we
-// can not acquire a lock, 0 if we are not to log a message, and 1
-// if we are ok to log a message.  Caller should check > 0 for true.
-LIBLOG_ABI_PUBLIC int __android_log_ratelimit(time_t seconds, time_t* last) {
-  int save_errno = errno;
-
-  // Two reasons for trylock failure:
-  //   1. In a signal handler. Must prevent deadlock
-  //   2. Too many threads calling __android_log_ratelimit.
-  //      Bonus to not print if they race here because that
-  //      dovetails the goal of ratelimiting. One may print
-  //      and the others will wait their turn ...
-  if (pthread_mutex_trylock(&lock_ratelimit)) {
-    if (save_errno) errno = save_errno;
-    return -1;
-  }
-
-  if (seconds == 0) {
-    seconds = last_seconds_default;
-  } else if (seconds < last_seconds_min) {
-    seconds = last_seconds_min;
-  } else if (seconds > last_seconds_max) {
-    seconds = last_seconds_max;
-  }
-
-  if (!last) {
-    if (g_last_seconds > seconds) {
-      seconds = g_last_seconds;
-    } else if (g_last_seconds < seconds) {
-      g_last_seconds = seconds;
-    }
-    last = &g_last_clock;
-  }
-
-  time_t now = time(NULL);
-  if ((now == (time_t)-1) || ((*last + seconds) > now)) {
-    pthread_mutex_unlock(&lock_ratelimit);
-    if (save_errno) errno = save_errno;
-    return 0;
-  }
-  *last = now;
-  pthread_mutex_unlock(&lock_ratelimit);
-  if (save_errno) errno = save_errno;
-  return 1;
-}
diff --git a/liblog/log_time.cpp b/liblog/log_time.cpp
index ae376be..77bb94f 100644
--- a/liblog/log_time.cpp
+++ b/liblog/log_time.cpp
@@ -137,7 +137,7 @@
 LIBLOG_ABI_PRIVATE log_time log_time::operator-=(const timespec& T) {
   // No concept of negative time, clamp to EPOCH
   if (*this <= T) {
-    return *this = EPOCH;
+    return *this = log_time(EPOCH);
   }
 
   if (this->tv_nsec < (unsigned long int)T.tv_nsec) {
@@ -165,7 +165,7 @@
 LIBLOG_ABI_PRIVATE log_time log_time::operator-=(const log_time& T) {
   // No concept of negative time, clamp to EPOCH
   if (*this <= T) {
-    return *this = EPOCH;
+    return *this = log_time(EPOCH);
   }
 
   if (this->tv_nsec < T.tv_nsec) {
diff --git a/liblog/logd_reader.c b/liblog/logd_reader.cpp
similarity index 86%
rename from liblog/logd_reader.c
rename to liblog/logd_reader.cpp
index 603ba24..05bbcbc 100644
--- a/liblog/logd_reader.c
+++ b/liblog/logd_reader.cpp
@@ -47,8 +47,7 @@
 static int logdVersion(struct android_log_logger* logger,
                        struct android_log_transport_context* transp);
 static int logdRead(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp,
-                    struct log_msg* log_msg);
+                    struct android_log_transport_context* transp, struct log_msg* log_msg);
 static int logdPoll(struct android_log_logger_list* logger_list,
                     struct android_log_transport_context* transp);
 static void logdClose(struct android_log_logger_list* logger_list,
@@ -56,37 +55,33 @@
 static int logdClear(struct android_log_logger* logger,
                      struct android_log_transport_context* transp);
 static ssize_t logdSetSize(struct android_log_logger* logger,
-                           struct android_log_transport_context* transp,
-                           size_t size);
+                           struct android_log_transport_context* transp, size_t size);
 static ssize_t logdGetSize(struct android_log_logger* logger,
                            struct android_log_transport_context* transp);
 static ssize_t logdGetReadableSize(struct android_log_logger* logger,
                                    struct android_log_transport_context* transp);
 static ssize_t logdGetPrune(struct android_log_logger_list* logger,
-                            struct android_log_transport_context* transp,
-                            char* buf, size_t len);
+                            struct android_log_transport_context* transp, char* buf, size_t len);
 static ssize_t logdSetPrune(struct android_log_logger_list* logger,
-                            struct android_log_transport_context* transp,
-                            char* buf, size_t len);
+                            struct android_log_transport_context* transp, char* buf, size_t len);
 static ssize_t logdGetStats(struct android_log_logger_list* logger,
-                            struct android_log_transport_context* transp,
-                            char* buf, size_t len);
+                            struct android_log_transport_context* transp, char* buf, size_t len);
 
 LIBLOG_HIDDEN struct android_log_transport_read logdLoggerRead = {
-  .node = { &logdLoggerRead.node, &logdLoggerRead.node },
-  .name = "logd",
-  .available = logdAvailable,
-  .version = logdVersion,
-  .read = logdRead,
-  .poll = logdPoll,
-  .close = logdClose,
-  .clear = logdClear,
-  .getSize = logdGetSize,
-  .setSize = logdSetSize,
-  .getReadableSize = logdGetReadableSize,
-  .getPrune = logdGetPrune,
-  .setPrune = logdSetPrune,
-  .getStats = logdGetStats,
+    .node = {&logdLoggerRead.node, &logdLoggerRead.node},
+    .name = "logd",
+    .available = logdAvailable,
+    .version = logdVersion,
+    .read = logdRead,
+    .poll = logdPoll,
+    .close = logdClose,
+    .clear = logdClear,
+    .getSize = logdGetSize,
+    .setSize = logdSetSize,
+    .getReadableSize = logdGetReadableSize,
+    .getPrune = logdGetPrune,
+    .setPrune = logdSetPrune,
+    .getStats = logdGetStats,
 };
 
 static int logdAvailable(log_id_t logId) {
@@ -109,8 +104,7 @@
 
 #if defined(_WIN32)
 
-LIBLOG_WEAK int socket_local_client(const char* name, int namespaceId,
-                                    int type) {
+LIBLOG_WEAK int socket_local_client(const char* name, int namespaceId, int type) {
   errno = ENOSYS;
   return -ENOSYS;
 }
@@ -131,8 +125,7 @@
 
 /* Documented in header file. */
 LIBLOG_WEAK int socket_make_sockaddr_un(const char* name, int namespaceId,
-                                        struct sockaddr_un* p_addr,
-                                        socklen_t* alen) {
+                                        struct sockaddr_un* p_addr, socklen_t* alen) {
   memset(p_addr, 0, sizeof(*p_addr));
   size_t namelen;
 
@@ -158,8 +151,7 @@
 
       namelen = strlen(name) + strlen(FILESYSTEM_SOCKET_PREFIX);
       /* unix_path_max appears to be missing on linux */
-      if (namelen >
-          sizeof(*p_addr) - offsetof(struct sockaddr_un, sun_path) - 1) {
+      if (namelen > sizeof(*p_addr) - offsetof(struct sockaddr_un, sun_path) - 1) {
         goto error;
       }
 
@@ -171,8 +163,7 @@
     case ANDROID_SOCKET_NAMESPACE_RESERVED:
       namelen = strlen(name) + strlen(ANDROID_RESERVED_SOCKET_PREFIX);
       /* unix_path_max appears to be missing on linux */
-      if (namelen >
-          sizeof(*p_addr) - offsetof(struct sockaddr_un, sun_path) - 1) {
+      if (namelen > sizeof(*p_addr) - offsetof(struct sockaddr_un, sun_path) - 1) {
         goto error;
       }
 
@@ -183,8 +174,7 @@
     case ANDROID_SOCKET_NAMESPACE_FILESYSTEM:
       namelen = strlen(name);
       /* unix_path_max appears to be missing on linux */
-      if (namelen >
-          sizeof(*p_addr) - offsetof(struct sockaddr_un, sun_path) - 1) {
+      if (namelen > sizeof(*p_addr) - offsetof(struct sockaddr_un, sun_path) - 1) {
         goto error;
       }
 
@@ -210,8 +200,8 @@
  *
  * Used by AndroidSocketImpl
  */
-LIBLOG_WEAK int socket_local_client_connect(int fd, const char* name,
-                                            int namespaceId, int type __unused) {
+LIBLOG_WEAK int socket_local_client_connect(int fd, const char* name, int namespaceId,
+                                            int type __unused) {
   struct sockaddr_un addr;
   socklen_t alen;
   int err;
@@ -236,8 +226,7 @@
  * connect to peer named "name"
  * returns fd or -1 on error
  */
-LIBLOG_WEAK int socket_local_client(const char* name, int namespaceId,
-                                    int type) {
+LIBLOG_WEAK int socket_local_client(const char* name, int namespaceId, int type) {
   int s;
 
   s = socket(AF_LOCAL, type, 0);
@@ -255,14 +244,13 @@
 /* End of ../libcutils/socket_local_client.c */
 
 /* worker for sending the command to the logger */
-static ssize_t send_log_msg(struct android_log_logger* logger, const char* msg,
-                            char* buf, size_t buf_size) {
+static ssize_t send_log_msg(struct android_log_logger* logger, const char* msg, char* buf,
+                            size_t buf_size) {
   ssize_t ret;
   size_t len;
   char* cp;
   int errno_save = 0;
-  int sock = socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_RESERVED,
-                                 SOCK_STREAM);
+  int sock = socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
   if (sock < 0) {
     return sock;
   }
@@ -342,8 +330,7 @@
                      struct android_log_transport_context* transp __unused) {
   char buf[512];
 
-  return check_log_success(buf,
-                           send_log_msg(logger, "clear %d", buf, sizeof(buf)));
+  return check_log_success(buf, send_log_msg(logger, "clear %d", buf, sizeof(buf)));
 }
 
 /* returns the total size of the log's ring buffer */
@@ -364,8 +351,7 @@
 }
 
 static ssize_t logdSetSize(struct android_log_logger* logger,
-                           struct android_log_transport_context* transp __unused,
-                           size_t size) {
+                           struct android_log_transport_context* transp __unused, size_t size) {
   char buf[512];
 
   snprintf(buf, sizeof(buf), "setLogSize %d %zu", logger->logId, size);
@@ -378,8 +364,7 @@
  * log consumed)
  */
 static ssize_t logdGetReadableSize(struct android_log_logger* logger,
-                                   struct android_log_transport_context* transp
-                                       __unused) {
+                                   struct android_log_transport_context* transp __unused) {
   char buf[512];
 
   ssize_t ret = send_log_msg(logger, "getLogSizeUsed %d", buf, sizeof(buf));
@@ -407,8 +392,8 @@
  * returns statistics
  */
 static ssize_t logdGetStats(struct android_log_logger_list* logger_list,
-                            struct android_log_transport_context* transp __unused,
-                            char* buf, size_t len) {
+                            struct android_log_transport_context* transp __unused, char* buf,
+                            size_t len) {
   struct android_log_logger* logger;
   char* cp = buf;
   size_t remaining = len;
@@ -434,14 +419,14 @@
 }
 
 static ssize_t logdGetPrune(struct android_log_logger_list* logger_list __unused,
-                            struct android_log_transport_context* transp __unused,
-                            char* buf, size_t len) {
+                            struct android_log_transport_context* transp __unused, char* buf,
+                            size_t len) {
   return send_log_msg(NULL, "getPruneList", buf, len);
 }
 
 static ssize_t logdSetPrune(struct android_log_logger_list* logger_list __unused,
-                            struct android_log_transport_context* transp __unused,
-                            char* buf, size_t len) {
+                            struct android_log_transport_context* transp __unused, char* buf,
+                            size_t len) {
   const char cmd[] = "setPruneList ";
   const size_t cmdlen = sizeof(cmd) - 1;
 
@@ -455,8 +440,7 @@
   return check_log_success(buf, send_log_msg(NULL, NULL, buf, len));
 }
 
-static void caught_signal(int signum __unused) {
-}
+static void caught_signal(int signum __unused) {}
 
 static int logdOpen(struct android_log_logger_list* logger_list,
                     struct android_log_transport_context* transp) {
@@ -476,12 +460,10 @@
     return sock;
   }
 
-  sock = socket_local_client("logdr", ANDROID_SOCKET_NAMESPACE_RESERVED,
-                             SOCK_SEQPACKET);
+  sock = socket_local_client("logdr", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_SEQPACKET);
   if (sock == 0) {
     /* Guarantee not file descriptor zero */
-    int newsock = socket_local_client(
-        "logdr", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_SEQPACKET);
+    int newsock = socket_local_client("logdr", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_SEQPACKET);
     close(sock);
     sock = newsock;
   }
@@ -492,8 +474,7 @@
     return sock;
   }
 
-  strcpy(buffer, (logger_list->mode & ANDROID_LOG_NONBLOCK) ? "dumpAndClose"
-                                                            : "stream");
+  strcpy(buffer, (logger_list->mode & ANDROID_LOG_NONBLOCK) ? "dumpAndClose" : "stream");
   cp = buffer + strlen(buffer);
 
   strcpy(cp, " lids");
@@ -518,14 +499,13 @@
   if (logger_list->start.tv_sec || logger_list->start.tv_nsec) {
     if (logger_list->mode & ANDROID_LOG_WRAP) {
       // ToDo: alternate API to allow timeout to be adjusted.
-      ret = snprintf(cp, remaining, " timeout=%u",
-                     ANDROID_LOG_WRAP_DEFAULT_TIMEOUT);
+      ret = snprintf(cp, remaining, " timeout=%u", ANDROID_LOG_WRAP_DEFAULT_TIMEOUT);
       ret = min(ret, remaining);
       remaining -= ret;
       cp += ret;
     }
-    ret = snprintf(cp, remaining, " start=%" PRIu32 ".%09" PRIu32,
-                   logger_list->start.tv_sec, logger_list->start.tv_nsec);
+    ret = snprintf(cp, remaining, " start=%" PRIu32 ".%09" PRIu32, logger_list->start.tv_sec,
+                   logger_list->start.tv_nsec);
     ret = min(ret, remaining);
     remaining -= ret;
     cp += ret;
@@ -576,8 +556,7 @@
 
 /* Read from the selected logs */
 static int logdRead(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp,
-                    struct log_msg* log_msg) {
+                    struct android_log_transport_context* transp, struct log_msg* log_msg) {
   int ret, e;
   struct sigaction ignore;
   struct sigaction old_sigaction;
diff --git a/liblog/logd_reader.h b/liblog/logd_reader.h
index 8ebb1ae..0bba7cf 100644
--- a/liblog/logd_reader.h
+++ b/liblog/logd_reader.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef _LIBLOG_LOGD_READER_H__
-#define _LIBLOG_LOGD_READER_H__
+#pragma once
 
 #include <unistd.h>
 
@@ -26,5 +25,3 @@
 LIBLOG_HIDDEN ssize_t __send_log_msg(char* buf, size_t buf_size);
 
 __END_DECLS
-
-#endif /* _LIBLOG_LOGD_READER_H__ */
diff --git a/liblog/logd_writer.c b/liblog/logd_writer.cpp
similarity index 85%
rename from liblog/logd_writer.c
rename to liblog/logd_writer.cpp
index e0e3eca..ed906b3 100644
--- a/liblog/logd_writer.c
+++ b/liblog/logd_writer.cpp
@@ -38,6 +38,7 @@
 #include "config_write.h"
 #include "log_portability.h"
 #include "logger.h"
+#include "uio.h"
 
 /* branchless on many architectures. */
 #define min(x, y) ((y) ^ (((x) ^ (y)) & -((x) < (y))))
@@ -45,17 +46,16 @@
 static int logdAvailable(log_id_t LogId);
 static int logdOpen();
 static void logdClose();
-static int logdWrite(log_id_t logId, struct timespec* ts, struct iovec* vec,
-                     size_t nr);
+static int logdWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr);
 
 LIBLOG_HIDDEN struct android_log_transport_write logdLoggerWrite = {
-  .node = { &logdLoggerWrite.node, &logdLoggerWrite.node },
-  .context.sock = -EBADF,
-  .name = "logd",
-  .available = logdAvailable,
-  .open = logdOpen,
-  .close = logdClose,
-  .write = logdWrite,
+    .node = {&logdLoggerWrite.node, &logdLoggerWrite.node},
+    .context.sock = -EBADF,
+    .name = "logd",
+    .available = logdAvailable,
+    .open = logdOpen,
+    .close = logdClose,
+    .write = logdWrite,
 };
 
 /* log_init_lock assumed */
@@ -64,8 +64,7 @@
 
   i = atomic_load(&logdLoggerWrite.context.sock);
   if (i < 0) {
-    int sock = TEMP_FAILURE_RETRY(
-        socket(PF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0));
+    int sock = TEMP_FAILURE_RETRY(socket(PF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0));
     if (sock < 0) {
       ret = -errno;
     } else {
@@ -74,15 +73,15 @@
       un.sun_family = AF_UNIX;
       strcpy(un.sun_path, "/dev/socket/logdw");
 
-      if (TEMP_FAILURE_RETRY(connect(sock, (struct sockaddr*)&un,
-                                     sizeof(struct sockaddr_un))) < 0) {
+      if (TEMP_FAILURE_RETRY(connect(sock, (struct sockaddr*)&un, sizeof(struct sockaddr_un))) <
+          0) {
         ret = -errno;
         switch (ret) {
           case -ENOTCONN:
           case -ECONNREFUSED:
           case -ENOENT:
             i = atomic_exchange(&logdLoggerWrite.context.sock, ret);
-          /* FALLTHRU */
+            [[fallthrough]];
           default:
             break;
         }
@@ -124,16 +123,15 @@
   return 1;
 }
 
-static int logdWrite(log_id_t logId, struct timespec* ts, struct iovec* vec,
-                     size_t nr) {
+static int logdWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr) {
   ssize_t ret;
   int sock;
   static const unsigned headerLength = 1;
   struct iovec newVec[nr + headerLength];
   android_log_header_t header;
   size_t i, payloadSize;
-  static atomic_int_fast32_t dropped;
-  static atomic_int_fast32_t droppedSecurity;
+  static atomic_int dropped;
+  static atomic_int droppedSecurity;
 
   sock = atomic_load(&logdLoggerWrite.context.sock);
   if (sock < 0) switch (sock) {
@@ -181,8 +179,7 @@
   newVec[0].iov_len = sizeof(header);
 
   if (sock >= 0) {
-    int32_t snapshot =
-        atomic_exchange_explicit(&droppedSecurity, 0, memory_order_relaxed);
+    int32_t snapshot = atomic_exchange_explicit(&droppedSecurity, 0, memory_order_relaxed);
     if (snapshot) {
       android_log_event_int_t buffer;
 
@@ -196,14 +193,12 @@
 
       ret = TEMP_FAILURE_RETRY(writev(sock, newVec, 2));
       if (ret != (ssize_t)(sizeof(header) + sizeof(buffer))) {
-        atomic_fetch_add_explicit(&droppedSecurity, snapshot,
-                                  memory_order_relaxed);
+        atomic_fetch_add_explicit(&droppedSecurity, snapshot, memory_order_relaxed);
       }
     }
     snapshot = atomic_exchange_explicit(&dropped, 0, memory_order_relaxed);
-    if (snapshot &&
-        __android_log_is_loggable_len(ANDROID_LOG_INFO, "liblog",
-                                      strlen("liblog"), ANDROID_LOG_VERBOSE)) {
+    if (snapshot && __android_log_is_loggable_len(ANDROID_LOG_INFO, "liblog", strlen("liblog"),
+                                                  ANDROID_LOG_VERBOSE)) {
       android_log_event_int_t buffer;
 
       header.id = LOG_ID_EVENTS;
@@ -267,12 +262,11 @@
         return ret;
       }
 
-      ret = TEMP_FAILURE_RETRY(
-          writev(atomic_load(&logdLoggerWrite.context.sock), newVec, i));
+      ret = TEMP_FAILURE_RETRY(writev(atomic_load(&logdLoggerWrite.context.sock), newVec, i));
       if (ret < 0) {
         ret = -errno;
       }
-    /* FALLTHRU */
+      [[fallthrough]];
     default:
       break;
   }
diff --git a/liblog/logger.h b/liblog/logger.h
index af83228..b2479d2 100644
--- a/liblog/logger.h
+++ b/liblog/logger.h
@@ -14,22 +14,21 @@
  * limitations under the License.
  */
 
-#ifndef _LIBLOG_LOGGER_H__
-#define _LIBLOG_LOGGER_H__
+#pragma once
 
 #include <stdatomic.h>
 #include <stdbool.h>
 
 #include <cutils/list.h>
 #include <log/log.h>
-#include <log/uio.h>
 
 #include "log_portability.h"
+#include "uio.h"
 
 __BEGIN_DECLS
 
 /* Union, sock or fd of zero is not allowed unless static initialized */
-union android_log_context {
+union android_log_context_union {
   void* priv;
   atomic_int sock;
   atomic_int fd;
@@ -41,7 +40,7 @@
   struct listnode node;
   const char* name;                  /* human name to describe the transport */
   unsigned logMask;                  /* mask cache of available() success */
-  union android_log_context context; /* Initialized by static allocation */
+  union android_log_context_union context; /* Initialized by static allocation */
 
   int (*available)(log_id_t logId); /* Does not cause resources to be taken */
   int (*open)();   /* can be called multiple times, reusing current resources */
@@ -115,7 +114,7 @@
 
 struct android_log_transport_context {
   struct listnode node;
-  union android_log_context context; /* zero init per-transport context */
+  union android_log_context_union context; /* zero init per-transport context */
   struct android_log_logger_list* parent;
 
   struct android_log_transport_read* transport;
@@ -161,8 +160,6 @@
 LIBLOG_HIDDEN int __android_log_trylock();
 LIBLOG_HIDDEN void __android_log_unlock();
 
-LIBLOG_HIDDEN int __android_log_transport;
+extern LIBLOG_HIDDEN int __android_log_transport;
 
 __END_DECLS
-
-#endif /* _LIBLOG_LOGGER_H__ */
diff --git a/liblog/logger_lock.c b/liblog/logger_lock.cpp
similarity index 100%
rename from liblog/logger_lock.c
rename to liblog/logger_lock.cpp
diff --git a/liblog/logger_name.c b/liblog/logger_name.cpp
similarity index 79%
rename from liblog/logger_name.c
rename to liblog/logger_name.cpp
index 479bbfe..c6f3cb7 100644
--- a/liblog/logger_name.c
+++ b/liblog/logger_name.cpp
@@ -15,6 +15,7 @@
 */
 
 #include <string.h>
+#include <type_traits>
 
 #include <log/log.h>
 
@@ -22,7 +23,7 @@
 
 /* In the future, we would like to make this list extensible */
 static const char* LOG_NAME[LOG_ID_MAX] = {
-      /* clang-format off */
+    /* clang-format off */
   [LOG_ID_MAIN] = "main",
   [LOG_ID_RADIO] = "radio",
   [LOG_ID_EVENTS] = "events",
@@ -31,7 +32,7 @@
   [LOG_ID_STATS] = "stats",
   [LOG_ID_SECURITY] = "security",
   [LOG_ID_KERNEL] = "kernel",
-  /* clang-format on */
+    /* clang-format on */
 };
 
 LIBLOG_ABI_PUBLIC const char* android_log_id_to_name(log_id_t log_id) {
@@ -41,12 +42,15 @@
   return LOG_NAME[log_id];
 }
 
+static_assert(std::is_same<std::underlying_type<log_id_t>::type, uint32_t>::value,
+              "log_id_t must be an unsigned int");
+
 LIBLOG_ABI_PUBLIC log_id_t android_name_to_log_id(const char* logName) {
   const char* b;
-  int ret;
+  unsigned int ret;
 
   if (!logName) {
-    return -1; /* NB: log_id_t is unsigned */
+    return static_cast<log_id_t>(0xFFFFFFFF);
   }
   b = strrchr(logName, '/');
   if (!b) {
@@ -58,8 +62,8 @@
   for (ret = LOG_ID_MIN; ret < LOG_ID_MAX; ++ret) {
     const char* l = LOG_NAME[ret];
     if (l && !strcmp(b, l)) {
-      return ret;
+      return static_cast<log_id_t>(ret);
     }
   }
-  return -1; /* should never happen */
+  return static_cast<log_id_t>(0xFFFFFFFF); /* should never happen */
 }
diff --git a/liblog/logger_read.c b/liblog/logger_read.cpp
similarity index 76%
rename from liblog/logger_read.c
rename to liblog/logger_read.cpp
index 29ebaf7..e429c36 100644
--- a/liblog/logger_read.c
+++ b/liblog/logger_read.cpp
@@ -14,6 +14,8 @@
 ** limitations under the License.
 */
 
+#include "log/log_read.h"
+
 #include <errno.h>
 #include <fcntl.h>
 #include <pthread.h>
@@ -34,8 +36,7 @@
 /* android_logger_alloc unimplemented, no use case */
 /* android_logger_free not exported */
 static void android_logger_free(struct logger* logger) {
-  struct android_log_logger* logger_internal =
-      (struct android_log_logger*)logger;
+  struct android_log_logger* logger_internal = (struct android_log_logger*)logger;
 
   if (!logger_internal) {
     return;
@@ -71,15 +72,13 @@
 
   __android_log_lock();
   /* mini __write_to_log_initialize() to populate transports */
-  if (list_empty(&__android_log_transport_read) &&
-      list_empty(&__android_log_persist_read)) {
+  if (list_empty(&__android_log_transport_read) && list_empty(&__android_log_persist_read)) {
     __android_log_config_read();
   }
   __android_log_unlock();
 
-  node = (logger_list->mode & ANDROID_LOG_PSTORE)
-             ? &__android_log_persist_read
-             : &__android_log_transport_read;
+  node = (logger_list->mode & ANDROID_LOG_PSTORE) ? &__android_log_persist_read
+                                                  : &__android_log_transport_read;
 
   read_transport_for_each(transport, node) {
     struct android_log_transport_context* transp;
@@ -92,15 +91,14 @@
       if ((logId == LOG_ID_SECURITY) && (__android_log_uid() != AID_SYSTEM)) {
         continue;
       }
-      if (transport->read &&
-          (!transport->available || (transport->available(logId) >= 0))) {
+      if (transport->read && (!transport->available || (transport->available(logId) >= 0))) {
         logMask |= 1 << logId;
       }
     }
     if (!logMask) {
       continue;
     }
-    transp = calloc(1, sizeof(*transp));
+    transp = static_cast<android_log_transport_context*>(calloc(1, sizeof(*transp)));
     if (!transp) {
       return -ENOMEM;
     }
@@ -116,31 +114,29 @@
   return 0;
 }
 
-#define LOGGER_FUNCTION(logger, def, func, args...)                   \
-  ssize_t ret = -EINVAL;                                              \
-  struct android_log_transport_context* transp;                       \
-  struct android_log_logger* logger_internal =                        \
-      (struct android_log_logger*)(logger);                           \
-                                                                      \
-  if (!logger_internal) {                                             \
-    return ret;                                                       \
-  }                                                                   \
-  ret = init_transport_context(logger_internal->parent);              \
-  if (ret < 0) {                                                      \
-    return ret;                                                       \
-  }                                                                   \
-                                                                      \
-  ret = (def);                                                        \
-  transport_context_for_each(transp, logger_internal->parent) {       \
-    if ((transp->logMask & (1 << logger_internal->logId)) &&          \
-        transp->transport && transp->transport->func) {               \
-      ssize_t retval =                                                \
-          (transp->transport->func)(logger_internal, transp, ##args); \
-      if ((ret >= 0) || (ret == (def))) {                             \
-        ret = retval;                                                 \
-      }                                                               \
-    }                                                                 \
-  }                                                                   \
+#define LOGGER_FUNCTION(logger, def, func, args...)                                  \
+  ssize_t ret = -EINVAL;                                                             \
+  struct android_log_transport_context* transp;                                      \
+  struct android_log_logger* logger_internal = (struct android_log_logger*)(logger); \
+                                                                                     \
+  if (!logger_internal) {                                                            \
+    return ret;                                                                      \
+  }                                                                                  \
+  ret = init_transport_context(logger_internal->parent);                             \
+  if (ret < 0) {                                                                     \
+    return ret;                                                                      \
+  }                                                                                  \
+                                                                                     \
+  ret = (def);                                                                       \
+  transport_context_for_each(transp, logger_internal->parent) {                      \
+    if ((transp->logMask & (1 << logger_internal->logId)) && transp->transport &&    \
+        transp->transport->func) {                                                   \
+      ssize_t retval = (transp->transport->func)(logger_internal, transp, ##args);   \
+      if ((ret >= 0) || (ret == (def))) {                                            \
+        ret = retval;                                                                \
+      }                                                                              \
+    }                                                                                \
+  }                                                                                  \
   return ret
 
 LIBLOG_ABI_PUBLIC int android_logger_clear(struct logger* logger) {
@@ -152,8 +148,7 @@
   LOGGER_FUNCTION(logger, -ENODEV, getSize);
 }
 
-LIBLOG_ABI_PUBLIC int android_logger_set_log_size(struct logger* logger,
-                                                  unsigned long size) {
+LIBLOG_ABI_PUBLIC int android_logger_set_log_size(struct logger* logger, unsigned long size) {
   LOGGER_FUNCTION(logger, -ENODEV, setSize, size);
 }
 
@@ -161,8 +156,7 @@
  * returns the readable size of the log's ring buffer (that is, amount of the
  * log consumed)
  */
-LIBLOG_ABI_PUBLIC long android_logger_get_log_readable_size(
-    struct logger* logger) {
+LIBLOG_ABI_PUBLIC long android_logger_get_log_readable_size(struct logger* logger) {
   LOGGER_FUNCTION(logger, -ENODEV, getReadableSize);
 }
 
@@ -173,51 +167,50 @@
   LOGGER_FUNCTION(logger, 4, version);
 }
 
-#define LOGGER_LIST_FUNCTION(logger_list, def, func, args...)              \
-  struct android_log_transport_context* transp;                            \
-  struct android_log_logger_list* logger_list_internal =                   \
-      (struct android_log_logger_list*)(logger_list);                      \
-                                                                           \
-  ssize_t ret = init_transport_context(logger_list_internal);              \
-  if (ret < 0) {                                                           \
-    return ret;                                                            \
-  }                                                                        \
-                                                                           \
-  ret = (def);                                                             \
-  transport_context_for_each(transp, logger_list_internal) {               \
-    if (transp->transport && (transp->transport->func)) {                  \
-      ssize_t retval =                                                     \
-          (transp->transport->func)(logger_list_internal, transp, ##args); \
-      if ((ret >= 0) || (ret == (def))) {                                  \
-        ret = retval;                                                      \
-      }                                                                    \
-    }                                                                      \
-  }                                                                        \
+#define LOGGER_LIST_FUNCTION(logger_list, def, func, args...)                           \
+  struct android_log_transport_context* transp;                                         \
+  struct android_log_logger_list* logger_list_internal =                                \
+      (struct android_log_logger_list*)(logger_list);                                   \
+                                                                                        \
+  ssize_t ret = init_transport_context(logger_list_internal);                           \
+  if (ret < 0) {                                                                        \
+    return ret;                                                                         \
+  }                                                                                     \
+                                                                                        \
+  ret = (def);                                                                          \
+  transport_context_for_each(transp, logger_list_internal) {                            \
+    if (transp->transport && (transp->transport->func)) {                               \
+      ssize_t retval = (transp->transport->func)(logger_list_internal, transp, ##args); \
+      if ((ret >= 0) || (ret == (def))) {                                               \
+        ret = retval;                                                                   \
+      }                                                                                 \
+    }                                                                                   \
+  }                                                                                     \
   return ret
 
 /*
  * returns statistics
  */
-LIBLOG_ABI_PUBLIC ssize_t android_logger_get_statistics(
-    struct logger_list* logger_list, char* buf, size_t len) {
+LIBLOG_ABI_PUBLIC ssize_t android_logger_get_statistics(struct logger_list* logger_list, char* buf,
+                                                        size_t len) {
   LOGGER_LIST_FUNCTION(logger_list, -ENODEV, getStats, buf, len);
 }
 
-LIBLOG_ABI_PUBLIC ssize_t android_logger_get_prune_list(
-    struct logger_list* logger_list, char* buf, size_t len) {
+LIBLOG_ABI_PUBLIC ssize_t android_logger_get_prune_list(struct logger_list* logger_list, char* buf,
+                                                        size_t len) {
   LOGGER_LIST_FUNCTION(logger_list, -ENODEV, getPrune, buf, len);
 }
 
-LIBLOG_ABI_PUBLIC int android_logger_set_prune_list(
-    struct logger_list* logger_list, char* buf, size_t len) {
+LIBLOG_ABI_PUBLIC int android_logger_set_prune_list(struct logger_list* logger_list, char* buf,
+                                                    size_t len) {
   LOGGER_LIST_FUNCTION(logger_list, -ENODEV, setPrune, buf, len);
 }
 
-LIBLOG_ABI_PUBLIC struct logger_list* android_logger_list_alloc(
-    int mode, unsigned int tail, pid_t pid) {
+LIBLOG_ABI_PUBLIC struct logger_list* android_logger_list_alloc(int mode, unsigned int tail,
+                                                                pid_t pid) {
   struct android_log_logger_list* logger_list;
 
-  logger_list = calloc(1, sizeof(*logger_list));
+  logger_list = static_cast<android_log_logger_list*>(calloc(1, sizeof(*logger_list)));
   if (!logger_list) {
     return NULL;
   }
@@ -231,11 +224,11 @@
   return (struct logger_list*)logger_list;
 }
 
-LIBLOG_ABI_PUBLIC struct logger_list* android_logger_list_alloc_time(
-    int mode, log_time start, pid_t pid) {
+LIBLOG_ABI_PUBLIC struct logger_list* android_logger_list_alloc_time(int mode, log_time start,
+                                                                     pid_t pid) {
   struct android_log_logger_list* logger_list;
 
-  logger_list = calloc(1, sizeof(*logger_list));
+  logger_list = static_cast<android_log_logger_list*>(calloc(1, sizeof(*logger_list)));
   if (!logger_list) {
     return NULL;
   }
@@ -253,8 +246,8 @@
 /* android_logger_list_unregister unimplemented, no use case */
 
 /* Open the named log and add it to the logger list */
-LIBLOG_ABI_PUBLIC struct logger* android_logger_open(
-    struct logger_list* logger_list, log_id_t logId) {
+LIBLOG_ABI_PUBLIC struct logger* android_logger_open(struct logger_list* logger_list,
+                                                     log_id_t logId) {
   struct android_log_logger_list* logger_list_internal =
       (struct android_log_logger_list*)logger_list;
   struct android_log_logger* logger;
@@ -269,7 +262,7 @@
     }
   }
 
-  logger = calloc(1, sizeof(*logger));
+  logger = static_cast<android_log_logger*>(calloc(1, sizeof(*logger)));
   if (!logger) {
     goto err;
   }
@@ -296,8 +289,8 @@
 }
 
 /* Open the single named log and make it part of a new logger list */
-LIBLOG_ABI_PUBLIC struct logger_list* android_logger_list_open(
-    log_id_t logId, int mode, unsigned int tail, pid_t pid) {
+LIBLOG_ABI_PUBLIC struct logger_list* android_logger_list_open(log_id_t logId, int mode,
+                                                               unsigned int tail, pid_t pid) {
   struct logger_list* logger_list = android_logger_list_alloc(mode, tail, pid);
 
   if (!logger_list) {
@@ -364,8 +357,8 @@
   }
 
   /* at least one transport */
-  transp = node_to_item(logger_list_internal->transport.next,
-                        struct android_log_transport_context, node);
+  transp = node_to_item(logger_list_internal->transport.next, struct android_log_transport_context,
+                        node);
 
   /* more than one transport? */
   if (transp->node.next != &logger_list_internal->transport) {
@@ -386,11 +379,9 @@
             retval = transp->ret = 0;
           } else if ((logger_list_internal->mode & ANDROID_LOG_NONBLOCK) ||
                      !transp->transport->poll) {
-            retval = android_transport_read(logger_list_internal, transp,
-                                            &transp->logMsg);
+            retval = android_transport_read(logger_list_internal, transp, &transp->logMsg);
           } else {
-            int pollval =
-                (*transp->transport->poll)(logger_list_internal, transp);
+            int pollval = (*transp->transport->poll)(logger_list_internal, transp);
             if (pollval <= 0) {
               sched_yield();
               pollval = (*transp->transport->poll)(logger_list_internal, transp);
@@ -402,8 +393,7 @@
               }
               retval = transp->ret = pollval;
             } else if (pollval > 0) {
-              retval = android_transport_read(logger_list_internal, transp,
-                                              &transp->logMsg);
+              retval = android_transport_read(logger_list_internal, transp, &transp->logMsg);
             }
           }
         }
@@ -416,11 +406,9 @@
               (oldest->logMsg.entry.nsec > transp->logMsg.entry.nsec)))) {
           oldest = transp;
         }
-        transp = node_to_item(transp->node.next,
-                              struct android_log_transport_context, node);
+        transp = node_to_item(transp->node.next, struct android_log_transport_context, node);
       } while (transp != node_to_item(&logger_list_internal->transport,
-                                      struct android_log_transport_context,
-                                      node));
+                                      struct android_log_transport_context, node));
       if (!oldest && (logger_list_internal->mode & ANDROID_LOG_NONBLOCK)) {
         return (ret < 0) ? ret : -EAGAIN;
       }
@@ -434,10 +422,10 @@
     ret = oldest->ret;
     if (ret < oldest->logMsg.entry.hdr_size) {
       // zero truncated header fields.
-      memset(log_msg, 0,
-             (oldest->logMsg.entry.hdr_size > sizeof(oldest->logMsg)
-                  ? sizeof(oldest->logMsg)
-                  : oldest->logMsg.entry.hdr_size));
+      memset(
+          log_msg, 0,
+          (oldest->logMsg.entry.hdr_size > sizeof(oldest->logMsg) ? sizeof(oldest->logMsg)
+                                                                  : oldest->logMsg.entry.hdr_size));
     }
     memcpy(log_msg, &oldest->logMsg, ret);
     oldest->logMsg.entry.len = 0; /* Mark it as copied */
@@ -471,8 +459,7 @@
 
   while (!list_empty(&logger_list_internal->logger)) {
     struct listnode* node = list_head(&logger_list_internal->logger);
-    struct android_log_logger* logger =
-        node_to_item(node, struct android_log_logger, node);
+    struct android_log_logger* logger = node_to_item(node, struct android_log_logger, node);
     android_logger_free((struct logger*)logger);
   }
 
diff --git a/liblog/logger_write.c b/liblog/logger_write.cpp
similarity index 88%
rename from liblog/logger_write.c
rename to liblog/logger_write.cpp
index 6dcda9b..af8cb2d 100644
--- a/liblog/logger_write.c
+++ b/liblog/logger_write.cpp
@@ -33,23 +33,19 @@
 #include "config_write.h"
 #include "log_portability.h"
 #include "logger.h"
+#include "uio.h"
 
 #define LOG_BUF_SIZE 1024
 
 static int __write_to_log_init(log_id_t, struct iovec* vec, size_t nr);
-static int (*write_to_log)(log_id_t, struct iovec* vec,
-                           size_t nr) = __write_to_log_init;
+static int (*write_to_log)(log_id_t, struct iovec* vec, size_t nr) = __write_to_log_init;
 
 /*
  * This is used by the C++ code to decide if it should write logs through
  * the C code.  Basically, if /dev/socket/logd is available, we're running in
  * the simulator rather than a desktop tool and want to use the device.
  */
-static enum {
-  kLogUninitialized,
-  kLogNotAvailable,
-  kLogAvailable
-} g_log_status = kLogUninitialized;
+static enum { kLogUninitialized, kLogNotAvailable, kLogAvailable } g_log_status = kLogUninitialized;
 
 static int check_log_uid_permissions() {
 #if defined(__ANDROID__)
@@ -70,7 +66,7 @@
           if (num_groups <= 0) {
             return -EPERM;
           }
-          groups = calloc(num_groups, sizeof(gid_t));
+          groups = static_cast<gid_t*>(calloc(num_groups, sizeof(gid_t)));
           if (!groups) {
             return -ENOMEM;
           }
@@ -93,9 +89,8 @@
   return 0;
 }
 
-static void __android_log_cache_available(
-    struct android_log_transport_write* node) {
-  size_t i;
+static void __android_log_cache_available(struct android_log_transport_write* node) {
+  uint32_t i;
 
   if (node->logMask) {
     return;
@@ -104,13 +99,13 @@
   for (i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) {
     if (node->write && (i != LOG_ID_KERNEL) &&
         ((i != LOG_ID_SECURITY) || (check_log_uid_permissions() == 0)) &&
-        (!node->available || ((*node->available)(i) >= 0))) {
+        (!node->available || ((*node->available)(static_cast<log_id_t>(i)) >= 0))) {
       node->logMask |= 1 << i;
     }
   }
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_dev_available() {
+LIBLOG_ABI_PUBLIC extern "C" int __android_log_dev_available() {
   struct android_log_transport_write* node;
 
   if (list_empty(&__android_log_transport_write)) {
@@ -308,10 +303,9 @@
       }
     }
     if (m && (m != (EventTagMap*)(uintptr_t)-1LL)) {
-      tag = android_lookupEventTag_len(m, &len, get4LE(vec[0].iov_base));
+      tag = android_lookupEventTag_len(m, &len, get4LE(static_cast<uint8_t*>(vec[0].iov_base)));
     }
-    ret = __android_log_is_loggable_len(ANDROID_LOG_INFO, tag, len,
-                                        ANDROID_LOG_VERBOSE);
+    ret = __android_log_is_loggable_len(ANDROID_LOG_INFO, tag, len, ANDROID_LOG_VERBOSE);
     if (f) { /* local copy marked for close */
       android_closeEventTagMap(f);
     }
@@ -322,7 +316,7 @@
   } else {
     /* Validate the incoming tag, tag content can not split across iovec */
     char prio = ANDROID_LOG_VERBOSE;
-    const char* tag = vec[0].iov_base;
+    const char* tag = static_cast<const char*>(vec[0].iov_base);
     size_t len = vec[0].iov_len;
     if (!tag) {
       len = 0;
@@ -408,13 +402,12 @@
   return ret;
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_write(int prio, const char* tag,
-                                          const char* msg) {
+LIBLOG_ABI_PUBLIC int __android_log_write(int prio, const char* tag, const char* msg) {
   return __android_log_buf_write(LOG_ID_MAIN, prio, tag, msg);
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_buf_write(int bufID, int prio,
-                                              const char* tag, const char* msg) {
+LIBLOG_ABI_PUBLIC int __android_log_buf_write(int bufID, int prio, const char* tag,
+                                              const char* msg) {
   struct iovec vec[3];
   char tmp_tag[32];
 
@@ -457,7 +450,7 @@
         bufID = LOG_ID_RADIO;
         snprintf(tmp_tag, sizeof(tmp_tag), "use-Rlog/RLOG-%s", tag);
         tag = tmp_tag;
-      /* FALLTHRU */
+        [[fallthrough]];
       default:
         break;
     }
@@ -476,11 +469,10 @@
   vec[2].iov_base = (void*)msg;
   vec[2].iov_len = strlen(msg) + 1;
 
-  return write_to_log(bufID, vec, 3);
+  return write_to_log(static_cast<log_id_t>(bufID), vec, 3);
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_vprint(int prio, const char* tag,
-                                           const char* fmt, va_list ap) {
+LIBLOG_ABI_PUBLIC int __android_log_vprint(int prio, const char* tag, const char* fmt, va_list ap) {
   char buf[LOG_BUF_SIZE];
 
   vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
@@ -488,8 +480,7 @@
   return __android_log_write(prio, tag, buf);
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_print(int prio, const char* tag,
-                                          const char* fmt, ...) {
+LIBLOG_ABI_PUBLIC int __android_log_print(int prio, const char* tag, const char* fmt, ...) {
   va_list ap;
   char buf[LOG_BUF_SIZE];
 
@@ -500,8 +491,7 @@
   return __android_log_write(prio, tag, buf);
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_buf_print(int bufID, int prio,
-                                              const char* tag, const char* fmt,
+LIBLOG_ABI_PUBLIC int __android_log_buf_print(int bufID, int prio, const char* tag, const char* fmt,
                                               ...) {
   va_list ap;
   char buf[LOG_BUF_SIZE];
@@ -513,8 +503,8 @@
   return __android_log_buf_write(bufID, prio, tag, buf);
 }
 
-LIBLOG_ABI_PUBLIC void __android_log_assert(const char* cond, const char* tag,
-                                            const char* fmt, ...) {
+LIBLOG_ABI_PUBLIC void __android_log_assert(const char* cond, const char* tag, const char* fmt,
+                                            ...) {
   char buf[LOG_BUF_SIZE];
 
   if (fmt) {
@@ -535,18 +525,15 @@
 
   // Log assertion failures to stderr for the benefit of "adb shell" users
   // and gtests (http://b/23675822).
-  struct iovec iov[2] = {
-    { buf, strlen(buf) }, { (char*)"\n", 1 },
-  };
-  TEMP_FAILURE_RETRY(writev(2, iov, 2));
+  TEMP_FAILURE_RETRY(write(2, buf, strlen(buf)));
+  TEMP_FAILURE_RETRY(write(2, "\n", 1));
 
   __android_log_write(ANDROID_LOG_FATAL, tag, buf);
   abort(); /* abort so we have a chance to debug the situation */
            /* NOTREACHED */
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_bwrite(int32_t tag, const void* payload,
-                                           size_t len) {
+LIBLOG_ABI_PUBLIC int __android_log_bwrite(int32_t tag, const void* payload, size_t len) {
   struct iovec vec[2];
 
   vec[0].iov_base = &tag;
@@ -557,9 +544,7 @@
   return write_to_log(LOG_ID_EVENTS, vec, 2);
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_stats_bwrite(int32_t tag,
-                                                 const void* payload,
-                                                 size_t len) {
+LIBLOG_ABI_PUBLIC int __android_log_stats_bwrite(int32_t tag, const void* payload, size_t len) {
   struct iovec vec[2];
 
   vec[0].iov_base = &tag;
@@ -570,9 +555,7 @@
   return write_to_log(LOG_ID_STATS, vec, 2);
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_security_bwrite(int32_t tag,
-                                                    const void* payload,
-                                                    size_t len) {
+LIBLOG_ABI_PUBLIC int __android_log_security_bwrite(int32_t tag, const void* payload, size_t len) {
   struct iovec vec[2];
 
   vec[0].iov_base = &tag;
@@ -588,8 +571,8 @@
  * for the general case where we're generating lists of stuff, but very
  * handy if we just want to dump an integer into the log.
  */
-LIBLOG_ABI_PUBLIC int __android_log_btwrite(int32_t tag, char type,
-                                            const void* payload, size_t len) {
+LIBLOG_ABI_PUBLIC int __android_log_btwrite(int32_t tag, char type, const void* payload,
+                                            size_t len) {
   struct iovec vec[3];
 
   vec[0].iov_base = &tag;
@@ -627,8 +610,7 @@
  * Like __android_log_security_bwrite, but used for writing strings to the
  * security log.
  */
-LIBLOG_ABI_PUBLIC int __android_log_security_bswrite(int32_t tag,
-                                                     const char* payload) {
+LIBLOG_ABI_PUBLIC int __android_log_security_bswrite(int32_t tag, const char* payload) {
   struct iovec vec[4];
   char type = EVENT_TYPE_STRING;
   uint32_t len = strlen(payload);
@@ -695,8 +677,7 @@
 
     write_to_log = __write_to_log_init;
     /* generically we only expect these two values for write_to_log */
-  } else if ((write_to_log != __write_to_log_init) &&
-             (write_to_log != __write_to_log_daemon)) {
+  } else if ((write_to_log != __write_to_log_init) && (write_to_log != __write_to_log_daemon)) {
     write_to_log = __write_to_log_init;
   }
 
@@ -716,8 +697,7 @@
   } else {
     __android_log_transport &= LOGGER_LOGD | LOGGER_STDERR;
     ret = __android_log_transport;
-    if ((write_to_log != __write_to_log_init) &&
-        (write_to_log != __write_to_log_daemon)) {
+    if ((write_to_log != __write_to_log_init) && (write_to_log != __write_to_log_daemon)) {
       ret = -EINVAL;
     }
   }
diff --git a/liblog/logprint.c b/liblog/logprint.cpp
similarity index 90%
rename from liblog/logprint.c
rename to liblog/logprint.cpp
index 7937cb1..798b089 100644
--- a/liblog/logprint.c
+++ b/liblog/logprint.cpp
@@ -15,7 +15,6 @@
 ** limitations under the License.
 */
 
-#define _GNU_SOURCE /* for asprintf */
 #ifndef __MINGW32__
 #define HAVE_STRSEP
 #endif
@@ -154,7 +153,7 @@
     case ANDROID_LOG_DEFAULT:
     case ANDROID_LOG_UNKNOWN:
     default:                  return '?';
-    /* clang-format on */
+      /* clang-format on */
   }
 }
 
@@ -172,16 +171,14 @@
     case ANDROID_LOG_DEFAULT:
     case ANDROID_LOG_UNKNOWN:
     default:                  return ANDROID_COLOR_DEFAULT;
-    /* clang-format on */
+      /* clang-format on */
   }
 }
 
-static android_LogPriority filterPriForTag(AndroidLogFormat* p_format,
-                                           const char* tag) {
+static android_LogPriority filterPriForTag(AndroidLogFormat* p_format, const char* tag) {
   FilterInfo* p_curFilter;
 
-  for (p_curFilter = p_format->filters; p_curFilter != NULL;
-       p_curFilter = p_curFilter->p_next) {
+  for (p_curFilter = p_format->filters; p_curFilter != NULL; p_curFilter = p_curFilter->p_next) {
     if (0 == strcmp(tag, p_curFilter->mTag)) {
       if (p_curFilter->mPri == ANDROID_LOG_DEFAULT) {
         return p_format->global_pri;
@@ -198,8 +195,7 @@
  * returns 1 if this log line should be printed based on its priority
  * and tag, and 0 if it should not
  */
-LIBLOG_ABI_PUBLIC int android_log_shouldPrintLine(AndroidLogFormat* p_format,
-                                                  const char* tag,
+LIBLOG_ABI_PUBLIC int android_log_shouldPrintLine(AndroidLogFormat* p_format, const char* tag,
                                                   android_LogPriority pri) {
   return pri >= filterPriForTag(p_format, tag);
 }
@@ -207,7 +203,7 @@
 LIBLOG_ABI_PUBLIC AndroidLogFormat* android_log_format_new() {
   AndroidLogFormat* p_ret;
 
-  p_ret = calloc(1, sizeof(AndroidLogFormat));
+  p_ret = static_cast<AndroidLogFormat*>(calloc(1, sizeof(AndroidLogFormat)));
 
   p_ret->global_pri = ANDROID_LOG_VERBOSE;
   p_ret->format = FORMAT_BRIEF;
@@ -302,8 +298,7 @@
 /**
  * Returns FORMAT_OFF on invalid string
  */
-LIBLOG_ABI_PUBLIC AndroidLogPrintFormat
-android_log_formatFromString(const char* formatString) {
+LIBLOG_ABI_PUBLIC AndroidLogPrintFormat android_log_formatFromString(const char* formatString) {
   static AndroidLogPrintFormat format;
 
   /* clang-format off */
@@ -326,7 +321,7 @@
   else if (!strcmp(formatString, "monotonic")) format = FORMAT_MODIFIER_MONOTONIC;
   else if (!strcmp(formatString, "uid")) format = FORMAT_MODIFIER_UID;
   else if (!strcmp(formatString, "descriptive")) format = FORMAT_MODIFIER_DESCRIPT;
-  /* clang-format on */
+    /* clang-format on */
 
 #ifndef __MINGW32__
   else {
@@ -344,9 +339,8 @@
      */
     tzset();
     if (!tzname[0] ||
-        ((!strcmp(tzname[0], utc) || !strcmp(tzname[0], gmt)) /* error? */
-         && strcasecmp(formatString, utc) &&
-         strcasecmp(formatString, gmt))) { /* ok */
+        ((!strcmp(tzname[0], utc) || !strcmp(tzname[0], gmt))                  /* error? */
+         && strcasecmp(formatString, utc) && strcasecmp(formatString, gmt))) { /* ok */
       if (cp) {
         setenv(tz, cp, 1);
       } else {
@@ -581,7 +575,7 @@
     msg[msgEnd] = '\0';
   }
 
-  entry->priority = msg[0];
+  entry->priority = static_cast<android_LogPriority>(msg[0]);
   entry->tag = msg + 1;
   entry->tagLen = msgStart - 1;
   entry->message = msg + msgStart;
@@ -643,9 +637,8 @@
   TYPE_MONOTONIC = 's'
 };
 
-static int android_log_printBinaryEvent(const unsigned char** pEventData,
-                                        size_t* pEventDataLen, char** pOutBuf,
-                                        size_t* pOutBufLen, const char** fmtStr,
+static int android_log_printBinaryEvent(const unsigned char** pEventData, size_t* pEventDataLen,
+                                        char** pOutBuf, size_t* pOutBufLen, const char** fmtStr,
                                         size_t* fmtLen) {
   const unsigned char* eventData = *pEventData;
   size_t eventDataLen = *pEventDataLen;
@@ -729,13 +722,10 @@
     }
 
     if (findChar(&cp, &len, '|') && findChar(&cp, &len, INT_MAX)) {
-      static const unsigned char typeTable[] = {
-        EVENT_TYPE_INT, EVENT_TYPE_LONG, EVENT_TYPE_STRING, EVENT_TYPE_LIST,
-        EVENT_TYPE_FLOAT
-      };
+      static const unsigned char typeTable[] = {EVENT_TYPE_INT, EVENT_TYPE_LONG, EVENT_TYPE_STRING,
+                                                EVENT_TYPE_LIST, EVENT_TYPE_FLOAT};
 
-      if ((*cp >= '1') &&
-          (*cp < (char)('1' + (sizeof(typeTable) / sizeof(typeTable[0])))) &&
+      if ((*cp >= '1') && (*cp < (char)('1' + (sizeof(typeTable) / sizeof(typeTable[0])))) &&
           (type != typeTable[(size_t)(*cp - '1')]))
         len = 0;
 
@@ -858,8 +848,8 @@
         outBufLen--;
 
         for (i = 0; i < count; i++) {
-          result = android_log_printBinaryEvent(
-              &eventData, &eventDataLen, &outBuf, &outBufLen, fmtStr, fmtLen);
+          result = android_log_printBinaryEvent(&eventData, &eventDataLen, &outBuf, &outBufLen,
+                                                fmtStr, fmtLen);
           if (result != 0) goto bail;
 
           if (i < (count - 1)) {
@@ -889,24 +879,21 @@
         case TYPE_BYTES:
           if ((lval != 0) && ((lval % 1024) == 0)) {
             /* repaint with multiplier */
-            static const char suffixTable[] = { 'K', 'M', 'G', 'T' };
+            static const char suffixTable[] = {'K', 'M', 'G', 'T'};
             size_t idx = 0;
             outBuf -= outCount;
             outBufLen += outCount;
             do {
               lval /= 1024;
               if ((lval % 1024) != 0) break;
-            } while (++idx <
-                     ((sizeof(suffixTable) / sizeof(suffixTable[0])) - 1));
-            outCount = snprintf(outBuf, outBufLen, "%" PRId64 "%cB", lval,
-                                suffixTable[idx]);
+            } while (++idx < ((sizeof(suffixTable) / sizeof(suffixTable[0])) - 1));
+            outCount = snprintf(outBuf, outBufLen, "%" PRId64 "%cB", lval, suffixTable[idx]);
           } else {
             outCount = snprintf(outBuf, outBufLen, "B");
           }
           break;
         case TYPE_MILLISECONDS:
-          if (((lval <= -1000) || (1000 <= lval)) &&
-              (outBufLen || (outBuf[-1] == '0'))) {
+          if (((lval <= -1000) || (1000 <= lval)) && (outBufLen || (outBuf[-1] == '0'))) {
             /* repaint as (fractional) seconds, possibly saving space */
             if (outBufLen) outBuf[0] = outBuf[-1];
             outBuf[-1] = outBuf[-2];
@@ -943,22 +930,19 @@
           }
           if (val >= minute) {
             if (val >= hour) {
-              outCount = snprintf(outBuf, outBufLen, "%" PRIu64 ":",
-                                  (val / hour) % (day / hour));
+              outCount = snprintf(outBuf, outBufLen, "%" PRIu64 ":", (val / hour) % (day / hour));
               if (outCount >= outBufLen) break;
               outBuf += outCount;
               outBufLen -= outCount;
             }
             outCount =
-                snprintf(outBuf, outBufLen,
-                         (val >= hour) ? "%02" PRIu64 ":" : "%" PRIu64 ":",
+                snprintf(outBuf, outBufLen, (val >= hour) ? "%02" PRIu64 ":" : "%" PRIu64 ":",
                          (val / minute) % (hour / minute));
             if (outCount >= outBufLen) break;
             outBuf += outCount;
             outBufLen -= outCount;
           }
-          outCount = snprintf(outBuf, outBufLen,
-                              (val >= minute) ? "%02" PRIu64 : "%" PRIu64 "s",
+          outCount = snprintf(outBuf, outBufLen, (val >= minute) ? "%02" PRIu64 : "%" PRIu64 "s",
                               val % minute);
         } break;
         case TYPE_ALLOCATIONS:
@@ -1015,7 +999,7 @@
  */
 LIBLOG_ABI_PUBLIC int android_log_processBinaryLogBuffer(
     struct logger_entry* buf, AndroidLogEntry* entry,
-    const EventTagMap* map __unused, /* only on !__ANDROID__ */
+    [[maybe_unused]] const EventTagMap* map, /* only on !__ANDROID__ */
     char* messageBuf, int messageBufLen) {
   size_t inCount;
   uint32_t tagIndex;
@@ -1100,8 +1084,8 @@
   int result = 0;
 
   if ((inCount > 0) || fmtLen) {
-    result = android_log_printBinaryEvent(&eventData, &inCount, &outBuf,
-                                          &outRemaining, &fmtStr, &fmtLen);
+    result = android_log_printBinaryEvent(&eventData, &inCount, &outBuf, &outRemaining, &fmtStr,
+                                          &fmtLen);
   }
   if ((result == 1) && fmtStr) {
     /* We overflowed :-(, let's repaint the line w/o format dressings */
@@ -1112,8 +1096,7 @@
     eventData += 4;
     outBuf = messageBuf;
     outRemaining = messageBufLen - 1;
-    result = android_log_printBinaryEvent(&eventData, &inCount, &outBuf,
-                                          &outRemaining, NULL, NULL);
+    result = android_log_printBinaryEvent(&eventData, &inCount, &outBuf, &outRemaining, NULL, NULL);
   }
   if (result < 0) {
     fprintf(stderr, "Binary log entry conversion failed\n");
@@ -1187,8 +1170,7 @@
   }
 
   for (utf32 = 1, num_to_read = 1, mask = 0x40, to_ignore_mask = 0x80;
-       num_to_read < 5 && (first_char & mask);
-       num_to_read++, to_ignore_mask |= mask, mask >>= 1) {
+       num_to_read < 5 && (first_char & mask); num_to_read++, to_ignore_mask |= mask, mask >>= 1) {
     if (num_to_read > len) {
       return -1;
     }
@@ -1226,8 +1208,7 @@
     len = utf8_character_length(message, len);
 
     if (len < 0) {
-      snprintf(buf, sizeof(buf),
-               ((messageLen > 1) && isdigit(message[1])) ? "\\%03o" : "\\%o",
+      snprintf(buf, sizeof(buf), ((messageLen > 1) && isdigit(message[1])) ? "\\%03o" : "\\%o",
                *message & 0377);
       len = 1;
     } else {
@@ -1281,8 +1262,7 @@
   return p;
 }
 
-static struct timespec* sumTimespec(struct timespec* left,
-                                    struct timespec* right) {
+static struct timespec* sumTimespec(struct timespec* left, struct timespec* right) {
   left->tv_nsec += right->tv_nsec;
   left->tv_sec += right->tv_sec;
   if (left->tv_nsec >= (long)NS_PER_SEC) {
@@ -1292,8 +1272,7 @@
   return left;
 }
 
-static struct timespec* subTimespec(struct timespec* result,
-                                    struct timespec* left,
+static struct timespec* subTimespec(struct timespec* result, struct timespec* left,
                                     struct timespec* right) {
   result->tv_nsec = left->tv_nsec - right->tv_nsec;
   result->tv_sec = left->tv_sec - right->tv_sec;
@@ -1309,8 +1288,7 @@
 }
 
 #ifdef __ANDROID__
-static void convertMonotonic(struct timespec* result,
-                             const AndroidLogEntry* entry) {
+static void convertMonotonic(struct timespec* result, const AndroidLogEntry* entry) {
   struct listnode* node;
   struct conversionList {
     struct listnode node; /* first */
@@ -1322,8 +1300,8 @@
   /* If we do not have a conversion list, build one up */
   if (list_empty(&convertHead)) {
     bool suspended_pending = false;
-    struct timespec suspended_monotonic = { 0, 0 };
-    struct timespec suspended_diff = { 0, 0 };
+    struct timespec suspended_monotonic = {0, 0};
+    struct timespec suspended_diff = {0, 0};
 
     /*
      * Read dmesg for _some_ synchronization markers and insert
@@ -1413,15 +1391,14 @@
           } else {
             unsetenv(tz);
           }
-          list = calloc(1, sizeof(struct conversionList));
+          list = static_cast<conversionList*>(calloc(1, sizeof(conversionList)));
           list_init(&list->node);
           list->time = time;
           subTimespec(&list->convert, &time, &monotonic);
           list_add_tail(&convertHead, &list->node);
         }
         if (suspended_pending && !list_empty(&convertHead)) {
-          list = node_to_item(list_tail(&convertHead), struct conversionList,
-                              node);
+          list = node_to_item(list_tail(&convertHead), struct conversionList, node);
           if (subTimespec(&time, subTimespec(&time, &list->time, &list->convert),
                           &suspended_monotonic)
                   ->tv_sec > 0) {
@@ -1434,13 +1411,13 @@
           time = suspended_monotonic;
           sumTimespec(&time, &convert);
           /* breakpoint just before sleep */
-          list = calloc(1, sizeof(struct conversionList));
+          list = static_cast<conversionList*>(calloc(1, sizeof(conversionList)));
           list_init(&list->node);
           list->time = time;
           list->convert = convert;
           list_add_tail(&convertHead, &list->node);
           /* breakpoint just after sleep */
-          list = calloc(1, sizeof(struct conversionList));
+          list = static_cast<conversionList*>(calloc(1, sizeof(conversionList)));
           list_init(&list->node);
           list->time = time;
           sumTimespec(&list->time, &suspended_diff);
@@ -1453,7 +1430,7 @@
       pclose(p);
     }
     /* last entry is our current time conversion */
-    list = calloc(1, sizeof(struct conversionList));
+    list = static_cast<conversionList*>(calloc(1, sizeof(conversionList)));
     list_init(&list->node);
     clock_gettime(CLOCK_REALTIME, &list->time);
     clock_gettime(CLOCK_MONOTONIC, &convert);
@@ -1469,7 +1446,7 @@
       time = suspended_monotonic;
       sumTimespec(&time, &convert);
       /* breakpoint just after sleep */
-      list = calloc(1, sizeof(struct conversionList));
+      list = static_cast<conversionList*>(calloc(1, sizeof(conversionList)));
       list_init(&list->node);
       list->time = time;
       sumTimespec(&list->time, &suspended_diff);
@@ -1477,7 +1454,7 @@
       sumTimespec(&list->convert, &suspended_diff);
       list_add_head(&convertHead, &list->node);
       /* breakpoint just before sleep */
-      list = calloc(1, sizeof(struct conversionList));
+      list = static_cast<conversionList*>(calloc(1, sizeof(conversionList)));
       list_init(&list->node);
       list->time = time;
       list->convert = convert;
@@ -1548,8 +1525,7 @@
  * Returns NULL on malloc error
  */
 
-LIBLOG_ABI_PUBLIC char* android_log_formatLogLine(AndroidLogFormat* p_format,
-                                                  char* defaultBuffer,
+LIBLOG_ABI_PUBLIC char* android_log_formatLogLine(AndroidLogFormat* p_format, char* defaultBuffer,
                                                   size_t defaultBufferSize,
                                                   const AndroidLogEntry* entry,
                                                   size_t* p_outLength) {
@@ -1600,26 +1576,23 @@
   }
   if (p_format->epoch_output || p_format->monotonic_output) {
     ptm = NULL;
-    snprintf(timeBuf, sizeof(timeBuf),
-             p_format->monotonic_output ? "%6lld" : "%19lld", (long long)now);
+    snprintf(timeBuf, sizeof(timeBuf), p_format->monotonic_output ? "%6lld" : "%19lld",
+             (long long)now);
   } else {
 #if !defined(_WIN32)
     ptm = localtime_r(&now, &tmBuf);
 #else
     ptm = localtime(&now);
 #endif
-    strftime(timeBuf, sizeof(timeBuf),
-             &"%Y-%m-%d %H:%M:%S"[p_format->year_output ? 0 : 3], ptm);
+    strftime(timeBuf, sizeof(timeBuf), &"%Y-%m-%d %H:%M:%S"[p_format->year_output ? 0 : 3], ptm);
   }
   len = strlen(timeBuf);
   if (p_format->nsec_time_output) {
     len += snprintf(timeBuf + len, sizeof(timeBuf) - len, ".%09ld", nsec);
   } else if (p_format->usec_time_output) {
-    len += snprintf(timeBuf + len, sizeof(timeBuf) - len, ".%06ld",
-                    nsec / US_PER_NSEC);
+    len += snprintf(timeBuf + len, sizeof(timeBuf) - len, ".%06ld", nsec / US_PER_NSEC);
   } else {
-    len += snprintf(timeBuf + len, sizeof(timeBuf) - len, ".%03ld",
-                    nsec / MS_PER_NSEC);
+    len += snprintf(timeBuf + len, sizeof(timeBuf) - len, ".%03ld", nsec / MS_PER_NSEC);
   }
   if (p_format->zone_output && ptm) {
     strftime(timeBuf + len, sizeof(timeBuf) - len, " %z", ptm);
@@ -1629,8 +1602,8 @@
    * Construct a buffer containing the log header and log message.
    */
   if (p_format->colored_output) {
-    prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "\x1B[38;5;%dm",
-                         colorFromPri(entry->priority));
+    prefixLen =
+        snprintf(prefixBuf, sizeof(prefixBuf), "\x1B[38;5;%dm", colorFromPri(entry->priority));
     prefixLen = MIN(prefixLen, sizeof(prefixBuf));
 
     const char suffixContents[] = "\x1B[0m";
@@ -1649,8 +1622,7 @@
 #if !defined(__MINGW32__)
 #if (FAKE_LOG_DEVICE == 0)
 #ifndef __BIONIC__
-#warning \
-    "This code assumes that getpwuid is thread safe, only true with Bionic!"
+#warning "This code assumes that getpwuid is thread safe, only true with Bionic!"
 #endif
 #endif
       struct passwd* pwd = getpwuid(entry->uid);
@@ -1669,21 +1641,21 @@
 
   switch (p_format->format) {
     case FORMAT_TAG:
-      len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen,
-                     "%c/%-8.*s: ", priChar, (int)entry->tagLen, entry->tag);
+      len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen, "%c/%-8.*s: ", priChar,
+                     (int)entry->tagLen, entry->tag);
       strcpy(suffixBuf + suffixLen, "\n");
       ++suffixLen;
       break;
     case FORMAT_PROCESS:
-      len = snprintf(suffixBuf + suffixLen, sizeof(suffixBuf) - suffixLen,
-                     "  (%.*s)\n", (int)entry->tagLen, entry->tag);
+      len = snprintf(suffixBuf + suffixLen, sizeof(suffixBuf) - suffixLen, "  (%.*s)\n",
+                     (int)entry->tagLen, entry->tag);
       suffixLen += MIN(len, sizeof(suffixBuf) - suffixLen);
-      len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen,
-                     "%c(%s%5d) ", priChar, uid, entry->pid);
+      len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen, "%c(%s%5d) ", priChar,
+                     uid, entry->pid);
       break;
     case FORMAT_THREAD:
-      len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen,
-                     "%c(%s%5d:%5d) ", priChar, uid, entry->pid, entry->tid);
+      len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen, "%c(%s%5d:%5d) ",
+                     priChar, uid, entry->pid, entry->tid);
       strcpy(suffixBuf + suffixLen, "\n");
       ++suffixLen;
       break;
@@ -1695,8 +1667,8 @@
       break;
     case FORMAT_TIME:
       len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen,
-                     "%s %c/%-8.*s(%s%5d): ", timeBuf, priChar,
-                     (int)entry->tagLen, entry->tag, uid, entry->pid);
+                     "%s %c/%-8.*s(%s%5d): ", timeBuf, priChar, (int)entry->tagLen, entry->tag, uid,
+                     entry->pid);
       strcpy(suffixBuf + suffixLen, "\n");
       ++suffixLen;
       break;
@@ -1706,24 +1678,24 @@
         *ret = ' ';
       }
       len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen,
-                     "%s %s%5d %5d %c %-8.*s: ", timeBuf, uid, entry->pid,
-                     entry->tid, priChar, (int)entry->tagLen, entry->tag);
+                     "%s %s%5d %5d %c %-8.*s: ", timeBuf, uid, entry->pid, entry->tid, priChar,
+                     (int)entry->tagLen, entry->tag);
       strcpy(suffixBuf + suffixLen, "\n");
       ++suffixLen;
       break;
     case FORMAT_LONG:
       len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen,
-                     "[ %s %s%5d:%5d %c/%-8.*s ]\n", timeBuf, uid, entry->pid,
-                     entry->tid, priChar, (int)entry->tagLen, entry->tag);
+                     "[ %s %s%5d:%5d %c/%-8.*s ]\n", timeBuf, uid, entry->pid, entry->tid, priChar,
+                     (int)entry->tagLen, entry->tag);
       strcpy(suffixBuf + suffixLen, "\n\n");
       suffixLen += 2;
       prefixSuffixIsHeaderFooter = 1;
       break;
     case FORMAT_BRIEF:
     default:
-      len = snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen,
-                     "%c/%-8.*s(%s%5d): ", priChar, (int)entry->tagLen,
-                     entry->tag, uid, entry->pid);
+      len =
+          snprintf(prefixBuf + prefixLen, sizeof(prefixBuf) - prefixLen,
+                   "%c/%-8.*s(%s%5d): ", priChar, (int)entry->tagLen, entry->tag, uid, entry->pid);
       strcpy(suffixBuf + suffixLen, "\n");
       ++suffixLen;
       break;
@@ -1847,16 +1819,15 @@
  * Returns count bytes written
  */
 
-LIBLOG_ABI_PUBLIC int android_log_printLogLine(AndroidLogFormat* p_format,
-                                               int fd,
+LIBLOG_ABI_PUBLIC int android_log_printLogLine(AndroidLogFormat* p_format, int fd,
                                                const AndroidLogEntry* entry) {
   int ret;
   char defaultBuffer[512];
   char* outBuffer = NULL;
   size_t totalLen;
 
-  outBuffer = android_log_formatLogLine(
-      p_format, defaultBuffer, sizeof(defaultBuffer), entry, &totalLen);
+  outBuffer =
+      android_log_formatLogLine(p_format, defaultBuffer, sizeof(defaultBuffer), entry, &totalLen);
 
   if (!outBuffer) return -1;
 
diff --git a/liblog/pmsg_reader.c b/liblog/pmsg_reader.cpp
similarity index 84%
rename from liblog/pmsg_reader.c
rename to liblog/pmsg_reader.cpp
index bf0e4fe..7bc6e4a 100644
--- a/liblog/pmsg_reader.c
+++ b/liblog/pmsg_reader.cpp
@@ -32,28 +32,27 @@
 static int pmsgVersion(struct android_log_logger* logger,
                        struct android_log_transport_context* transp);
 static int pmsgRead(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp,
-                    struct log_msg* log_msg);
+                    struct android_log_transport_context* transp, struct log_msg* log_msg);
 static void pmsgClose(struct android_log_logger_list* logger_list,
                       struct android_log_transport_context* transp);
 static int pmsgClear(struct android_log_logger* logger,
                      struct android_log_transport_context* transp);
 
 LIBLOG_HIDDEN struct android_log_transport_read pmsgLoggerRead = {
-  .node = { &pmsgLoggerRead.node, &pmsgLoggerRead.node },
-  .name = "pmsg",
-  .available = pmsgAvailable,
-  .version = pmsgVersion,
-  .read = pmsgRead,
-  .poll = NULL,
-  .close = pmsgClose,
-  .clear = pmsgClear,
-  .setSize = NULL,
-  .getSize = NULL,
-  .getReadableSize = NULL,
-  .getPrune = NULL,
-  .setPrune = NULL,
-  .getStats = NULL,
+    .node = {&pmsgLoggerRead.node, &pmsgLoggerRead.node},
+    .name = "pmsg",
+    .available = pmsgAvailable,
+    .version = pmsgVersion,
+    .read = pmsgRead,
+    .poll = NULL,
+    .close = pmsgClose,
+    .clear = pmsgClear,
+    .setSize = NULL,
+    .getSize = NULL,
+    .getReadableSize = NULL,
+    .getPrune = NULL,
+    .setPrune = NULL,
+    .getStats = NULL,
 };
 
 static int pmsgAvailable(log_id_t logId) {
@@ -68,8 +67,7 @@
 
 /* Determine the credentials of the caller */
 static bool uid_has_log_permission(uid_t uid) {
-  return (uid == AID_SYSTEM) || (uid == AID_LOG) || (uid == AID_ROOT) ||
-         (uid == AID_LOGD);
+  return (uid == AID_SYSTEM) || (uid == AID_LOG) || (uid == AID_ROOT) || (uid == AID_LOGD);
 }
 
 static uid_t get_best_effective_uid() {
@@ -130,8 +128,7 @@
 }
 
 static int pmsgRead(struct android_log_logger_list* logger_list,
-                    struct android_log_transport_context* transp,
-                    struct log_msg* log_msg) {
+                    struct android_log_transport_context* transp, struct log_msg* log_msg) {
   ssize_t ret;
   off_t current, next;
   uid_t uid;
@@ -174,8 +171,7 @@
       if (fd <= 0) {
         return -EBADF;
       }
-      ret = TEMP_FAILURE_RETRY(
-          read(fd, &buf.p.magic + preread_count, sizeof(buf) - preread_count));
+      ret = TEMP_FAILURE_RETRY(read(fd, &buf.p.magic + preread_count, sizeof(buf) - preread_count));
       if (ret < 0) {
         return -errno;
       }
@@ -185,11 +181,10 @@
       return preread_count ? -EIO : -EAGAIN;
     }
     if ((buf.p.magic != LOGGER_MAGIC) || (buf.p.len <= sizeof(buf)) ||
-        (buf.p.len > (sizeof(buf) + LOGGER_ENTRY_MAX_PAYLOAD)) ||
-        (buf.l.id >= LOG_ID_MAX) || (buf.l.realtime.tv_nsec >= NS_PER_SEC) ||
+        (buf.p.len > (sizeof(buf) + LOGGER_ENTRY_MAX_PAYLOAD)) || (buf.l.id >= LOG_ID_MAX) ||
+        (buf.l.realtime.tv_nsec >= NS_PER_SEC) ||
         ((buf.l.id != LOG_ID_EVENTS) && (buf.l.id != LOG_ID_SECURITY) &&
-         ((buf.prio == ANDROID_LOG_UNKNOWN) ||
-          (buf.prio == ANDROID_LOG_DEFAULT) ||
+         ((buf.prio == ANDROID_LOG_UNKNOWN) || (buf.prio == ANDROID_LOG_DEFAULT) ||
           (buf.prio >= ANDROID_LOG_SILENT)))) {
       do {
         memmove(&buf.p.magic, &buf.p.magic + 1, --preread_count);
@@ -213,8 +208,7 @@
         if (fd <= 0) {
           return -EBADF;
         }
-        ret = TEMP_FAILURE_RETRY(
-            read(fd, msg + sizeof(buf.prio), buf.p.len - sizeof(buf)));
+        ret = TEMP_FAILURE_RETRY(read(fd, msg + sizeof(buf.prio), buf.p.len - sizeof(buf)));
         if (ret < 0) {
           return -errno;
         }
@@ -250,8 +244,7 @@
     if (fd <= 0) {
       return -EBADF;
     }
-    next = TEMP_FAILURE_RETRY(
-        lseek(fd, (off_t)(buf.p.len - sizeof(buf)), SEEK_CUR));
+    next = TEMP_FAILURE_RETRY(lseek(fd, (off_t)(buf.p.len - sizeof(buf)), SEEK_CUR));
     if (next < 0) {
       return -errno;
     }
@@ -277,9 +270,10 @@
   return result;
 }
 
-LIBLOG_ABI_PRIVATE ssize_t
-__android_log_pmsg_file_read(log_id_t logId, char prio, const char* prefix,
-                             __android_log_pmsg_file_read_fn fn, void* arg) {
+LIBLOG_ABI_PRIVATE ssize_t __android_log_pmsg_file_read(log_id_t logId, char prio,
+                                                        const char* prefix,
+                                                        __android_log_pmsg_file_read_fn fn,
+                                                        void* arg) {
   ssize_t ret;
   struct android_log_logger_list logger_list;
   struct android_log_transport_context transp;
@@ -312,14 +306,12 @@
   memset(&logger_list, 0, sizeof(logger_list));
   memset(&transp, 0, sizeof(transp));
 
-  logger_list.mode =
-      ANDROID_LOG_PSTORE | ANDROID_LOG_NONBLOCK | ANDROID_LOG_RDONLY;
+  logger_list.mode = ANDROID_LOG_PSTORE | ANDROID_LOG_NONBLOCK | ANDROID_LOG_RDONLY;
   transp.logMask = (unsigned)-1;
   if (logId != LOG_ID_ANY) {
     transp.logMask = (1 << logId);
   }
-  transp.logMask &=
-      ~((1 << LOG_ID_KERNEL) | (1 << LOG_ID_EVENTS) | (1 << LOG_ID_SECURITY));
+  transp.logMask &= ~((1 << LOG_ID_KERNEL) | (1 << LOG_ID_EVENTS) | (1 << LOG_ID_SECURITY));
   if (!transp.logMask) {
     return -EINVAL;
   }
@@ -346,15 +338,13 @@
 
   /* Read the file content */
   while (pmsgRead(&logger_list, &transp, &transp.logMsg) > 0) {
-    char* cp;
-    size_t hdr_size = transp.logMsg.entry.hdr_size
-                          ? transp.logMsg.entry.hdr_size
-                          : sizeof(transp.logMsg.entry_v1);
+    const char* cp;
+    size_t hdr_size = transp.logMsg.entry.hdr_size ? transp.logMsg.entry.hdr_size
+                                                   : sizeof(transp.logMsg.entry_v1);
     char* msg = (char*)&transp.logMsg + hdr_size;
-    char* split = NULL;
+    const char* split = NULL;
 
-    if ((hdr_size < sizeof(transp.logMsg.entry_v1)) ||
-        (hdr_size > sizeof(transp.logMsg.entry))) {
+    if ((hdr_size < sizeof(transp.logMsg.entry_v1)) || (hdr_size > sizeof(transp.logMsg.entry))) {
       continue;
     }
     /* Check for invalid sequence number */
@@ -366,8 +356,7 @@
 
     /* Determine if it has <dirbase>:<filebase> format for tag */
     len = transp.logMsg.entry.len - sizeof(prio);
-    for (cp = msg + sizeof(prio); *cp && isprint(*cp) && !isspace(*cp) && --len;
-         ++cp) {
+    for (cp = msg + sizeof(prio); *cp && isprint(*cp) && !isspace(*cp) && --len; ++cp) {
       if (*cp == ':') {
         if (split) {
           break;
@@ -395,13 +384,12 @@
         continue;
       }
       offset = split - prefix;
-      if ((msg[offset + sizeof(prio)] != ':') ||
-          strncmp(msg + sizeof(prio), prefix, offset)) {
+      if ((msg[offset + sizeof(prio)] != ':') || strncmp(msg + sizeof(prio), prefix, offset)) {
         continue;
       }
       ++offset;
-      if ((prefix_len > offset) && strncmp(&msg[offset + sizeof(prio)],
-                                           split + 1, prefix_len - offset)) {
+      if ((prefix_len > offset) &&
+          strncmp(&msg[offset + sizeof(prio)], split + 1, prefix_len - offset)) {
         continue;
       }
     }
@@ -413,8 +401,8 @@
     /* check if there is an existing entry */
     list_for_each(node, &name_list) {
       names = node_to_item(node, struct names, node);
-      if (!strcmp(names->name, msg + sizeof(prio)) &&
-          (names->id == transp.logMsg.entry.lid) && (names->prio == *msg)) {
+      if (!strcmp(names->name, msg + sizeof(prio)) && (names->id == transp.logMsg.entry.lid) &&
+          (names->prio == *msg)) {
         break;
       }
     }
@@ -425,13 +413,13 @@
       unsigned long long nl;
 
       len = strlen(msg + sizeof(prio)) + 1;
-      names = calloc(1, sizeof(*names) + len);
+      names = static_cast<struct names*>(calloc(1, sizeof(*names) + len));
       if (!names) {
         ret = -ENOMEM;
         break;
       }
       strcpy(names->name, msg + sizeof(prio));
-      names->id = transp.logMsg.entry.lid;
+      names->id = static_cast<log_id_t>(transp.logMsg.entry.lid);
       names->prio = *msg;
       list_init(&names->content);
       /*
@@ -491,19 +479,17 @@
     }
 
     /* Add content */
-    content =
-        calloc(1, sizeof(content->node) + hdr_size + transp.logMsg.entry.len);
+    content = static_cast<struct content*>(
+        calloc(1, sizeof(content->node) + hdr_size + transp.logMsg.entry.len));
     if (!content) {
       ret = -ENOMEM;
       break;
     }
-    memcpy(&content->entry, &transp.logMsg.entry,
-           hdr_size + transp.logMsg.entry.len);
+    memcpy(&content->entry, &transp.logMsg.entry, hdr_size + transp.logMsg.entry.len);
 
     /* Insert in sequence number sorted order, to ease reconstruction */
     list_for_each_reverse(node, &names->content) {
-      if ((node_to_item(node, struct content, node))->entry.nsec <
-          transp.logMsg.entry.nsec) {
+      if ((node_to_item(node, struct content, node))->entry.nsec < transp.logMsg.entry.nsec) {
         break;
       }
     }
@@ -536,7 +522,7 @@
       }
 
       if (!buf) {
-        buf = malloc(sizeof(char));
+        buf = static_cast<char*>(malloc(sizeof(char)));
         if (!buf) {
           ret = -ENOMEM;
           list_remove(content_node);
@@ -549,7 +535,7 @@
       /* Missing sequence numbers */
       while (sequence < content->entry.nsec) {
         /* plus space for enforced nul */
-        buf = realloc_or_free(buf, len + sizeof(char) + sizeof(char));
+        buf = static_cast<char*>(realloc_or_free(buf, len + sizeof(char) + sizeof(char)));
         if (!buf) {
           break;
         }
@@ -564,16 +550,14 @@
         continue;
       }
       /* plus space for enforced nul */
-      buf = realloc_or_free(buf, len + add_len + sizeof(char));
+      buf = static_cast<char*>(realloc_or_free(buf, len + add_len + sizeof(char)));
       if (!buf) {
         ret = -ENOMEM;
         list_remove(content_node);
         free(content);
         continue;
       }
-      memcpy(buf + len,
-             (char*)&content->entry + content->entry.hdr_size + tag_len +
-                 sizeof(prio),
+      memcpy(buf + len, (char*)&content->entry + content->entry.hdr_size + tag_len + sizeof(prio),
              add_len);
       len += add_len;
       buf[len] = '\0'; /* enforce trailing hidden nul */
diff --git a/liblog/pmsg_writer.c b/liblog/pmsg_writer.cpp
similarity index 88%
rename from liblog/pmsg_writer.c
rename to liblog/pmsg_writer.cpp
index dc42856..b2fc6d0 100644
--- a/liblog/pmsg_writer.c
+++ b/liblog/pmsg_writer.cpp
@@ -33,21 +33,21 @@
 #include "config_write.h"
 #include "log_portability.h"
 #include "logger.h"
+#include "uio.h"
 
 static int pmsgOpen();
 static void pmsgClose();
 static int pmsgAvailable(log_id_t logId);
-static int pmsgWrite(log_id_t logId, struct timespec* ts, struct iovec* vec,
-                     size_t nr);
+static int pmsgWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr);
 
 LIBLOG_HIDDEN struct android_log_transport_write pmsgLoggerWrite = {
-  .node = { &pmsgLoggerWrite.node, &pmsgLoggerWrite.node },
-  .context.fd = -1,
-  .name = "pmsg",
-  .available = pmsgAvailable,
-  .open = pmsgOpen,
-  .close = pmsgClose,
-  .write = pmsgWrite,
+    .node = {&pmsgLoggerWrite.node, &pmsgLoggerWrite.node},
+    .context.fd = -1,
+    .name = "pmsg",
+    .available = pmsgAvailable,
+    .open = pmsgOpen,
+    .close = pmsgClose,
+    .write = pmsgWrite,
 };
 
 static int pmsgOpen() {
@@ -76,8 +76,7 @@
   if (logId > LOG_ID_SECURITY) {
     return -EINVAL;
   }
-  if ((logId != LOG_ID_SECURITY) && (logId != LOG_ID_EVENTS) &&
-      !__android_log_is_debuggable()) {
+  if ((logId != LOG_ID_SECURITY) && (logId != LOG_ID_EVENTS) && !__android_log_is_debuggable()) {
     return -EINVAL;
   }
   if (atomic_load(&pmsgLoggerWrite.context.fd) < 0) {
@@ -96,8 +95,7 @@
   return src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
 }
 
-static int pmsgWrite(log_id_t logId, struct timespec* ts, struct iovec* vec,
-                     size_t nr) {
+static int pmsgWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr) {
   static const unsigned headerLength = 2;
   struct iovec newVec[nr + headerLength];
   android_log_header_t header;
@@ -110,7 +108,7 @@
       return -EINVAL;
     }
 
-    if (SNET_EVENT_LOG_TAG != get4LE(vec[0].iov_base)) {
+    if (SNET_EVENT_LOG_TAG != get4LE(static_cast<uint8_t*>(vec[0].iov_base))) {
       return -EPERM;
     }
   }
@@ -169,8 +167,7 @@
   }
   pmsgHeader.len += payloadSize;
 
-  ret = TEMP_FAILURE_RETRY(
-      writev(atomic_load(&pmsgLoggerWrite.context.fd), newVec, i));
+  ret = TEMP_FAILURE_RETRY(writev(atomic_load(&pmsgLoggerWrite.context.fd), newVec, i));
   if (ret < 0) {
     ret = errno ? -errno : -ENOTCONN;
   }
@@ -203,10 +200,8 @@
 }
 
 /* Write a buffer as filename references (tag = <basedir>:<basename>) */
-LIBLOG_ABI_PRIVATE ssize_t __android_log_pmsg_file_write(log_id_t logId,
-                                                         char prio,
-                                                         const char* filename,
-                                                         const char* buf,
+LIBLOG_ABI_PRIVATE ssize_t __android_log_pmsg_file_write(log_id_t logId, char prio,
+                                                         const char* filename, const char* buf,
                                                          size_t len) {
   bool weOpened;
   size_t length, packet_len;
@@ -249,13 +244,11 @@
   vec[1].iov_len = length;
 
   weOpened = false;
-  for (ts.tv_nsec = 0, length = len; length;
-       ts.tv_nsec += ANDROID_LOG_PMSG_FILE_SEQUENCE) {
+  for (ts.tv_nsec = 0, length = len; length; ts.tv_nsec += ANDROID_LOG_PMSG_FILE_SEQUENCE) {
     ssize_t ret;
     size_t transfer;
 
-    if ((ts.tv_nsec / ANDROID_LOG_PMSG_FILE_SEQUENCE) >=
-        ANDROID_LOG_PMSG_FILE_MAX_SEQUENCE) {
+    if ((ts.tv_nsec / ANDROID_LOG_PMSG_FILE_SEQUENCE) >= ANDROID_LOG_PMSG_FILE_MAX_SEQUENCE) {
       len -= length;
       break;
     }
diff --git a/liblog/properties.c b/liblog/properties.cpp
similarity index 86%
rename from liblog/properties.c
rename to liblog/properties.cpp
index 11be827..764877e 100644
--- a/liblog/properties.c
+++ b/liblog/properties.cpp
@@ -14,9 +14,10 @@
 ** limitations under the License.
 */
 
+#include <log/log_properties.h>
+
 #include <ctype.h>
 #include <pthread.h>
-#include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
 #define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
@@ -160,11 +161,11 @@
       }
       if (!last_tag || !last_tag[0]) {
         if (!last_tag) {
-          last_tag = calloc(1, len + 1);
+          last_tag = static_cast<char*>(calloc(1, len + 1));
           last_tag_len = 0;
           if (last_tag) last_tag_len = len + 1;
         } else if (len >= last_tag_len) {
-          last_tag = realloc(last_tag, len + 1);
+          last_tag = static_cast<char*>(realloc(last_tag, len + 1));
           last_tag_len = 0;
           if (last_tag) last_tag_len = len + 1;
         }
@@ -258,22 +259,19 @@
     case 'A': return ANDROID_LOG_FATAL;
     case BOOLEAN_FALSE: /* FALLTHRU */ /* Not Officially supported */
     case 'S': return -1; /* ANDROID_LOG_SUPPRESS */
-    /* clang-format on */
+      /* clang-format on */
   }
   return default_prio;
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_is_loggable_len(int prio, const char* tag,
-                                                    size_t len,
+LIBLOG_ABI_PUBLIC int __android_log_is_loggable_len(int prio, const char* tag, size_t len,
                                                     int default_prio) {
   int logLevel = __android_log_level(tag, len, default_prio);
   return logLevel >= 0 && prio >= logLevel;
 }
 
-LIBLOG_ABI_PUBLIC int __android_log_is_loggable(int prio, const char* tag,
-                                                int default_prio) {
-  int logLevel =
-      __android_log_level(tag, (tag && *tag) ? strlen(tag) : 0, default_prio);
+LIBLOG_ABI_PUBLIC int __android_log_is_loggable(int prio, const char* tag, int default_prio) {
+  int logLevel = __android_log_level(tag, (tag && *tag) ? strlen(tag) : 0, default_prio);
   return logLevel >= 0 && prio >= logLevel;
 }
 
@@ -286,7 +284,7 @@
   if (tag_cache.c) { /* ro property does not change after set */
     ret = tag_cache.c == '1';
   } else if (lock()) {
-    struct cache_char temp_cache = { { NULL, -1 }, '\0' };
+    struct cache_char temp_cache = {{NULL, 0xFFFFFFFF}, '\0'};
     refresh_cache(&temp_cache, key);
     ret = temp_cache.c == '1';
   } else {
@@ -332,8 +330,7 @@
     return self->evaluate(self);
   }
 
-  change_detected = check_cache(&self->cache_persist.cache) ||
-                    check_cache(&self->cache_ro.cache);
+  change_detected = check_cache(&self->cache_persist.cache) || check_cache(&self->cache_ro.cache);
   current_serial = __system_property_area_serial();
   if (current_serial != self->serial) {
     change_detected = 1;
@@ -365,15 +362,12 @@
  * to handle developer requirements.
  */
 LIBLOG_ABI_PUBLIC clockid_t android_log_clockid() {
-  static struct cache2_char clockid = {
-    PTHREAD_MUTEX_INITIALIZER, 0,
-    "persist.logd.timestamp",  { { NULL, -1 }, '\0' },
-    "ro.logd.timestamp",       { { NULL, -1 }, '\0' },
-    evaluate_persist_ro
-  };
+  static struct cache2_char clockid = {PTHREAD_MUTEX_INITIALIZER, 0,
+                                       "persist.logd.timestamp",  {{NULL, 0xFFFFFFFF}, '\0'},
+                                       "ro.logd.timestamp",       {{NULL, 0xFFFFFFFF}, '\0'},
+                                       evaluate_persist_ro};
 
-  return (tolower(do_cache2_char(&clockid)) == 'm') ? CLOCK_MONOTONIC
-                                                    : CLOCK_REALTIME;
+  return (tolower(do_cache2_char(&clockid)) == 'm') ? CLOCK_MONOTONIC : CLOCK_REALTIME;
 }
 
 /*
@@ -388,11 +382,10 @@
 
 LIBLOG_ABI_PUBLIC int __android_log_security() {
   static struct cache2_char security = {
-    PTHREAD_MUTEX_INITIALIZER, 0,
-    "persist.logd.security",   { { NULL, -1 }, BOOLEAN_FALSE },
-    "ro.device_owner",         { { NULL, -1 }, BOOLEAN_FALSE },
-    evaluate_security
-  };
+      PTHREAD_MUTEX_INITIALIZER, 0,
+      "persist.logd.security",   {{NULL, 0xFFFFFFFF}, BOOLEAN_FALSE},
+      "ro.device_owner",         {{NULL, 0xFFFFFFFF}, BOOLEAN_FALSE},
+      evaluate_security};
 
   return do_cache2_char(&security);
 }
@@ -423,8 +416,7 @@
   char property[PROP_VALUE_MAX];
 };
 
-static void refresh_cache_property(struct cache_property* cache,
-                                   const char* key) {
+static void refresh_cache_property(struct cache_property* cache, const char* key) {
   if (!cache->cache.pinfo) {
     cache->cache.pinfo = __system_property_find(key);
     if (!cache->cache.pinfo) {
@@ -436,19 +428,18 @@
 }
 
 /* get boolean with the logger twist that supports eng adjustments */
-LIBLOG_ABI_PRIVATE bool __android_logger_property_get_bool(const char* key,
-                                                           int flag) {
-  struct cache_property property = { { NULL, -1 }, { 0 } };
+LIBLOG_ABI_PRIVATE bool __android_logger_property_get_bool(const char* key, int flag) {
+  struct cache_property property = {{NULL, 0xFFFFFFFF}, {0}};
   if (flag & BOOL_DEFAULT_FLAG_PERSIST) {
     char newkey[strlen("persist.") + strlen(key) + 1];
     snprintf(newkey, sizeof(newkey), "ro.%s", key);
     refresh_cache_property(&property, newkey);
     property.cache.pinfo = NULL;
-    property.cache.serial = -1;
+    property.cache.serial = 0xFFFFFFFF;
     snprintf(newkey, sizeof(newkey), "persist.%s", key);
     refresh_cache_property(&property, newkey);
     property.cache.pinfo = NULL;
-    property.cache.serial = -1;
+    property.cache.serial = 0xFFFFFFFF;
   }
 
   refresh_cache_property(&property, key);
@@ -477,8 +468,7 @@
   }
 
   if ((flag & BOOL_DEFAULT_FLAG_SVELTE) &&
-      __android_logger_property_get_bool("ro.config.low_ram",
-                                         BOOL_DEFAULT_FALSE)) {
+      __android_logger_property_get_bool("ro.config.low_ram", BOOL_DEFAULT_FALSE)) {
     return false;
   }
   if ((flag & BOOL_DEFAULT_FLAG_ENG) && !__android_log_is_debuggable()) {
@@ -531,8 +521,7 @@
   unsigned long (*const evaluate)(const struct cache2_property_size* self);
 };
 
-static inline unsigned long do_cache2_property_size(
-    struct cache2_property_size* self) {
+static inline unsigned long do_cache2_property_size(struct cache2_property_size* self) {
   uint32_t current_serial;
   int change_detected;
   unsigned long v;
@@ -542,8 +531,7 @@
     return self->evaluate(self);
   }
 
-  change_detected = check_cache(&self->cache_persist.cache) ||
-                    check_cache(&self->cache_ro.cache);
+  change_detected = check_cache(&self->cache_persist.cache) || check_cache(&self->cache_ro.cache);
   current_serial = __system_property_area_serial();
   if (current_serial != self->serial) {
     change_detected = 1;
@@ -560,8 +548,7 @@
   return v;
 }
 
-static unsigned long property_get_size_from_cache(
-    const struct cache_property* cache) {
+static unsigned long property_get_size_from_cache(const struct cache_property* cache) {
   char* cp;
   unsigned long value = strtoul(cache->property, &cp, 10);
 
@@ -569,11 +556,11 @@
     case 'm':
     case 'M':
       value *= 1024;
-    /* FALLTHRU */
+      [[fallthrough]];
     case 'k':
     case 'K':
       value *= 1024;
-    /* FALLTHRU */
+      [[fallthrough]];
     case '\0':
       break;
 
@@ -588,8 +575,7 @@
   return value;
 }
 
-static unsigned long evaluate_property_get_size(
-    const struct cache2_property_size* self) {
+static unsigned long evaluate_property_get_size(const struct cache2_property_size* self) {
   unsigned long size = property_get_size_from_cache(&self->cache_persist);
   if (size) {
     return size;
@@ -601,37 +587,35 @@
   static const char global_tunable[] = "persist.logd.size"; /* Settings App */
   static const char global_default[] = "ro.logd.size";      /* BoardConfig.mk */
   static struct cache2_property_size global = {
-    /* clang-format off */
+      /* clang-format off */
     PTHREAD_MUTEX_INITIALIZER, 0,
-    global_tunable, { { NULL, -1 }, {} },
-    global_default, { { NULL, -1 }, {} },
+    global_tunable, { { NULL, 0xFFFFFFFF }, {} },
+    global_default, { { NULL, 0xFFFFFFFF }, {} },
     evaluate_property_get_size
-    /* clang-format on */
+      /* clang-format on */
   };
   char key_persist[strlen(global_tunable) + strlen(".security") + 1];
   char key_ro[strlen(global_default) + strlen(".security") + 1];
   struct cache2_property_size local = {
-    /* clang-format off */
+      /* clang-format off */
     PTHREAD_MUTEX_INITIALIZER, 0,
-    key_persist, { { NULL, -1 }, {} },
-    key_ro,      { { NULL, -1 }, {} },
+    key_persist, { { NULL, 0xFFFFFFFF }, {} },
+    key_ro,      { { NULL, 0xFFFFFFFF }, {} },
     evaluate_property_get_size
-    /* clang-format on */
+      /* clang-format on */
   };
   unsigned long property_size, default_size;
 
   default_size = do_cache2_property_size(&global);
   if (!default_size) {
-    default_size = __android_logger_property_get_bool("ro.config.low_ram",
-                                                      BOOL_DEFAULT_FALSE)
+    default_size = __android_logger_property_get_bool("ro.config.low_ram", BOOL_DEFAULT_FALSE)
                        ? LOG_BUFFER_MIN_SIZE /* 64K  */
                        : LOG_BUFFER_SIZE;    /* 256K */
   }
 
   snprintf(key_persist, sizeof(key_persist), "%s.%s", global_tunable,
            android_log_id_to_name(logId));
-  snprintf(key_ro, sizeof(key_ro), "%s.%s", global_default,
-           android_log_id_to_name(logId));
+  snprintf(key_ro, sizeof(key_ro), "%s.%s", global_default, android_log_id_to_name(logId));
   property_size = do_cache2_property_size(&local);
 
   if (!property_size) {
diff --git a/liblog/stderr_write.c b/liblog/stderr_write.cpp
similarity index 90%
rename from liblog/stderr_write.c
rename to liblog/stderr_write.cpp
index dbe5309..28195aa 100644
--- a/liblog/stderr_write.c
+++ b/liblog/stderr_write.cpp
@@ -37,16 +37,15 @@
 #include <log/event_tag_map.h>
 #include <log/log.h>
 #include <log/logprint.h>
-#include <log/uio.h>
 
 #include "log_portability.h"
 #include "logger.h"
+#include "uio.h"
 
 static int stderrOpen();
 static void stderrClose();
 static int stderrAvailable(log_id_t logId);
-static int stderrWrite(log_id_t logId, struct timespec* ts, struct iovec* vec,
-                       size_t nr);
+static int stderrWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr);
 
 struct stderrContext {
   AndroidLogFormat* logformat;
@@ -56,13 +55,13 @@
 };
 
 LIBLOG_HIDDEN struct android_log_transport_write stderrLoggerWrite = {
-  .node = { &stderrLoggerWrite.node, &stderrLoggerWrite.node },
-  .context.priv = NULL,
-  .name = "stderr",
-  .available = stderrAvailable,
-  .open = stderrOpen,
-  .close = stderrClose,
-  .write = stderrWrite,
+    .node = {&stderrLoggerWrite.node, &stderrLoggerWrite.node},
+    .context.priv = NULL,
+    .name = "stderr",
+    .available = stderrAvailable,
+    .open = stderrOpen,
+    .close = stderrClose,
+    .write = stderrWrite,
 };
 
 static int stderrOpen() {
@@ -78,7 +77,7 @@
     return fileno(stderr);
   }
 
-  ctx = calloc(1, sizeof(struct stderrContext));
+  ctx = static_cast<stderrContext*>(calloc(1, sizeof(stderrContext)));
   if (!ctx) {
     return -ENOMEM;
   }
@@ -123,7 +122,7 @@
 }
 
 static void stderrClose() {
-  struct stderrContext* ctx = stderrLoggerWrite.context.priv;
+  stderrContext* ctx = static_cast<stderrContext*>(stderrLoggerWrite.context.priv);
 
   if (ctx) {
     stderrLoggerWrite.context.priv = NULL;
@@ -147,14 +146,13 @@
   return 1;
 }
 
-static int stderrWrite(log_id_t logId, struct timespec* ts, struct iovec* vec,
-                       size_t nr) {
+static int stderrWrite(log_id_t logId, struct timespec* ts, struct iovec* vec, size_t nr) {
   struct log_msg log_msg;
   AndroidLogEntry entry;
   char binaryMsgBuf[1024];
   int err;
   size_t i;
-  struct stderrContext* ctx = stderrLoggerWrite.context.priv;
+  stderrContext* ctx = static_cast<stderrContext*>(stderrLoggerWrite.context.priv);
 
   if (!ctx) return -EBADF;
   if (!vec || !nr) return -EINVAL;
diff --git a/liblog/tests/Android.bp b/liblog/tests/Android.bp
index 2c47fd6..4ab2acb 100644
--- a/liblog/tests/Android.bp
+++ b/liblog/tests/Android.bp
@@ -29,10 +29,10 @@
         "-fno-builtin",
     ],
     shared_libs: [
-        "liblog",
         "libm",
         "libbase",
     ],
+    static_libs: ["liblog"],
     srcs: ["liblog_benchmark.cpp"],
 }
 
@@ -63,10 +63,10 @@
         "log_wrap_test.cpp",
     ],
     shared_libs: [
-        "liblog",
         "libcutils",
         "libbase",
     ],
+    static_libs: ["liblog"],
 }
 
 // Build tests for the device (with .so). Run with:
diff --git a/liblog/tests/liblog_benchmark.cpp b/liblog/tests/liblog_benchmark.cpp
index c2f3f83..c8ac321 100644
--- a/liblog/tests/liblog_benchmark.cpp
+++ b/liblog/tests/liblog_benchmark.cpp
@@ -21,6 +21,7 @@
 #include <sys/socket.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
+#include <sys/uio.h>
 #include <unistd.h>
 
 #include <unordered_set>
diff --git a/liblog/tests/liblog_test.cpp b/liblog/tests/liblog_test.cpp
index 2d0fc9b..83f0fa9 100644
--- a/liblog/tests/liblog_test.cpp
+++ b/liblog/tests/liblog_test.cpp
@@ -3160,41 +3160,6 @@
 }
 #endif  // USING_LOGGER_DEFAULT
 
-#ifdef USING_LOGGER_DEFAULT  // Do not retest ratelimit
-TEST(liblog, __android_log_ratelimit) {
-  time_t state = 0;
-
-  errno = 42;
-  // Prime
-  __android_log_ratelimit(3, &state);
-  EXPECT_EQ(errno, 42);
-  // Check
-  EXPECT_FALSE(__android_log_ratelimit(3, &state));
-  sleep(1);
-  EXPECT_FALSE(__android_log_ratelimit(3, &state));
-  sleep(4);
-  EXPECT_TRUE(__android_log_ratelimit(3, &state));
-  sleep(5);
-  EXPECT_TRUE(__android_log_ratelimit(3, &state));
-
-  // API checks
-  IF_ALOG_RATELIMIT_LOCAL(3, &state) {
-    EXPECT_FALSE(0 != "IF_ALOG_RATELIMIT_LOCAL(3, &state)");
-  }
-
-  IF_ALOG_RATELIMIT() {
-    ;
-  }
-  else {
-    EXPECT_TRUE(0 == "IF_ALOG_RATELIMIT()");
-  }
-  IF_ALOG_RATELIMIT() {
-    EXPECT_FALSE(0 != "IF_ALOG_RATELIMIT()");
-  }
-  // Do not test default seconds, to allow liblog to tune freely
-}
-#endif  // USING_LOGGER_DEFAULT
-
 #ifdef USING_LOGGER_DEFAULT  // Do not retest event mapping functionality
 TEST(liblog, android_lookupEventTagNum) {
 #ifdef __ANDROID__
diff --git a/liblog/tests/log_time_test.cpp b/liblog/tests/log_time_test.cpp
index 0ae1d18..47fe594 100644
--- a/liblog/tests/log_time_test.cpp
+++ b/liblog/tests/log_time_test.cpp
@@ -21,12 +21,6 @@
 #include <log/log_time.h>
 
 TEST(liblog, log_time) {
-#ifdef _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
-  log_time(CLOCK_MONOTONIC);
-
-  EXPECT_EQ(log_time, log_time::EPOCH);
-#endif
-
   struct timespec ts;
   clock_gettime(CLOCK_MONOTONIC, &ts);
   log_time tl(ts);
diff --git a/liblog/uio.c b/liblog/uio.c
deleted file mode 100644
index e127202..0000000
--- a/liblog/uio.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2007-2014 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.
- */
-
-#if defined(_WIN32)
-
-#include <unistd.h>
-
-#include <log/uio.h>
-
-#include "log_portability.h"
-
-LIBLOG_ABI_PUBLIC int readv(int fd, struct iovec* vecs, int count) {
-  int total = 0;
-
-  for (; count > 0; count--, vecs++) {
-    char* buf = vecs->iov_base;
-    int len = vecs->iov_len;
-
-    while (len > 0) {
-      int ret = read(fd, buf, len);
-      if (ret < 0) {
-        if (total == 0) total = -1;
-        goto Exit;
-      }
-      if (ret == 0) goto Exit;
-
-      total += ret;
-      buf += ret;
-      len -= ret;
-    }
-  }
-Exit:
-  return total;
-}
-
-LIBLOG_ABI_PUBLIC int writev(int fd, const struct iovec* vecs, int count) {
-  int total = 0;
-
-  for (; count > 0; count--, vecs++) {
-    const char* buf = vecs->iov_base;
-    int len = vecs->iov_len;
-
-    while (len > 0) {
-      int ret = write(fd, buf, len);
-      if (ret < 0) {
-        if (total == 0) total = -1;
-        goto Exit;
-      }
-      if (ret == 0) goto Exit;
-
-      total += ret;
-      buf += ret;
-      len -= ret;
-    }
-  }
-Exit:
-  return total;
-}
-
-#endif
diff --git a/liblog/include/log/uio.h b/liblog/uio.h
similarity index 62%
rename from liblog/include/log/uio.h
rename to liblog/uio.h
index a492bae..c85893c 100644
--- a/liblog/include/log/uio.h
+++ b/liblog/uio.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007-2014 The Android Open Source Project
+ * Copyright (C) 2019 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.
@@ -14,37 +14,14 @@
  * limitations under the License.
  */
 
-#ifndef _LIBS_CUTILS_UIO_H
-#define _LIBS_CUTILS_UIO_H
+#pragma once
 
-#if !defined(_WIN32)
-
-#include <sys/uio.h>
-
-#else
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-//
-// Implementation of sys/uio.h for Win32.
-//
-
+#if defined(_WIN32)
 #include <stddef.h>
-
 struct iovec {
   void* iov_base;
   size_t iov_len;
 };
-
-extern int readv(int fd, struct iovec* vecs, int count);
-extern int writev(int fd, const struct iovec* vecs, int count);
-
-#ifdef __cplusplus
-}
+#else
+#include <sys/uio.h>
 #endif
-
-#endif
-
-#endif /* _LIBS_UTILS_UIO_H */
diff --git a/libmeminfo/libmeminfo_test.cpp b/libmeminfo/libmeminfo_test.cpp
index e689a26..7d85dd2 100644
--- a/libmeminfo/libmeminfo_test.cpp
+++ b/libmeminfo/libmeminfo_test.cpp
@@ -293,15 +293,6 @@
     EXPECT_EQ(supported, IsSmapsRollupSupported(-1));
 }
 
-TEST(TestProcMemInfo, SmapsOrRollupReturn) {
-    // if /proc/<pid>/smaps_rollup file exists, .SmapsRollup() must return true;
-    // false otherwise
-    std::string path = ::android::base::StringPrintf("/proc/%d/smaps_rollup", pid);
-    ProcMemInfo proc_mem(pid);
-    MemUsage stats;
-    EXPECT_EQ(!access(path.c_str(), F_OK), proc_mem.SmapsOrRollup(&stats));
-}
-
 TEST(TestProcMemInfo, SmapsOrRollupTest) {
     std::string rollup =
             R"rollup(12c00000-7fe859e000 ---p 00000000 00:00 0                                [rollup]
diff --git a/libmeminfo/procmeminfo.cpp b/libmeminfo/procmeminfo.cpp
index 347a293..d6332a3 100644
--- a/libmeminfo/procmeminfo.cpp
+++ b/libmeminfo/procmeminfo.cpp
@@ -406,9 +406,10 @@
         return false;
     }
 
-    char line[1024];
+    char* line = nullptr;
+    size_t line_alloc = 0;
     stats->clear();
-    while (fgets(line, sizeof(line), fp.get()) != nullptr) {
+    while (getline(&line, &line_alloc, fp.get()) > 0) {
         switch (line[0]) {
             case 'P':
                 if (strncmp(line, "Pss:", 4) == 0) {
@@ -441,6 +442,8 @@
         }
     }
 
+    // free getline() managed buffer
+    free(line);
     return true;
 }
 
@@ -450,14 +453,17 @@
         return false;
     }
     *pss = 0;
-    char line[1024];
-    while (fgets(line, sizeof(line), fp.get()) != nullptr) {
+    char* line = nullptr;
+    size_t line_alloc = 0;
+    while (getline(&line, &line_alloc, fp.get()) > 0) {
         uint64_t v;
         if (sscanf(line, "Pss: %" SCNu64 " kB", &v) == 1) {
             *pss += v;
         }
     }
 
+    // free getline() managed buffer
+    free(line);
     return true;
 }
 
diff --git a/libnativebridge/Android.bp b/libnativebridge/Android.bp
index a5f0142..c54570e 100644
--- a/libnativebridge/Android.bp
+++ b/libnativebridge/Android.bp
@@ -17,7 +17,15 @@
         "liblog",
     ],
 
-    version_script: "libnativebridge.map.txt",
+    target: {
+        android: {
+            version_script: "libnativebridge.map.txt",
+        },
+        linux: {
+            version_script: "libnativebridge.map.txt",
+        },
+    },
+
     stubs: {
         symbol_file: "libnativebridge.map.txt",
         versions: ["1"],
diff --git a/libnativeloader/Android.bp b/libnativeloader/Android.bp
index 17983bc..2802d36 100644
--- a/libnativeloader/Android.bp
+++ b/libnativeloader/Android.bp
@@ -24,3 +24,10 @@
         "vndksp.libraries.txt",
     ],
 }
+
+cc_library_headers {
+    name: "libnativeloader-dummy-headers",
+
+    host_supported: true,
+    export_include_dirs: ["include"],
+}
diff --git a/libnativeloader/OWNERS b/libnativeloader/OWNERS
index 5c28a9f..f735653 100644
--- a/libnativeloader/OWNERS
+++ b/libnativeloader/OWNERS
@@ -1,2 +1,6 @@
 dimitry@google.com
 jiyong@google.com
+ngeoffray@google.com
+oth@google.com
+mast@google.com
+rpl@google.com
diff --git a/libnativeloader/include/nativeloader/dlext_namespaces.h b/libnativeloader/include/nativeloader/dlext_namespaces.h
index 43c9329..ca026b3 100644
--- a/libnativeloader/include/nativeloader/dlext_namespaces.h
+++ b/libnativeloader/include/nativeloader/dlext_namespaces.h
@@ -18,6 +18,7 @@
 #define __ANDROID_DLEXT_NAMESPACES_H__
 
 #include <android/dlext.h>
+#include <stdbool.h>
 
 __BEGIN_DECLS
 
@@ -84,12 +85,9 @@
  * If a library or any of its dependencies are outside of the permitted_when_isolated_path
  * and search_path, and it is not part of the public namespace dlopen will fail.
  */
-extern struct android_namespace_t* android_create_namespace(const char* name,
-                                                            const char* ld_library_path,
-                                                            const char* default_library_path,
-                                                            uint64_t type,
-                                                            const char* permitted_when_isolated_path,
-                                                            android_namespace_t* parent);
+extern struct android_namespace_t* android_create_namespace(
+    const char* name, const char* ld_library_path, const char* default_library_path, uint64_t type,
+    const char* permitted_when_isolated_path, struct android_namespace_t* parent);
 
 /*
  * Creates a link between namespaces. Every link has list of sonames of
@@ -107,8 +105,8 @@
  *      step will not go deeper into linked namespaces for this library but
  *      will do so for DT_NEEDED libraries.
  */
-extern bool android_link_namespaces(android_namespace_t* from,
-                                    android_namespace_t* to,
+extern bool android_link_namespaces(struct android_namespace_t* from,
+                                    struct android_namespace_t* to,
                                     const char* shared_libs_sonames);
 
 /*
@@ -124,7 +122,7 @@
  */
 extern void android_get_LD_LIBRARY_PATH(char* buffer, size_t buffer_size);
 
-extern android_namespace_t* android_get_exported_namespace(const char* name);
+extern struct android_namespace_t* android_get_exported_namespace(const char* name);
 
 __END_DECLS
 
diff --git a/libnativeloader/include/nativeloader/native_loader.h b/libnativeloader/include/nativeloader/native_loader.h
index c1d9d2a..af53dc5 100644
--- a/libnativeloader/include/nativeloader/native_loader.h
+++ b/libnativeloader/include/nativeloader/native_loader.h
@@ -17,14 +17,21 @@
 #ifndef NATIVE_LOADER_H_
 #define NATIVE_LOADER_H_
 
-#include "jni.h"
+#include <stdbool.h>
 #include <stdint.h>
-#include <string>
+#include "jni.h"
 #if defined(__ANDROID__)
 #include <android/dlext.h>
 #endif
 
+#ifdef __cplusplus
 namespace android {
+extern "C" {
+#endif  // __cplusplus
+
+// README: the char** error message parameter being passed
+// to the methods below need to be freed through calling NativeLoaderFreeErrorMessage.
+// It's the caller's responsibility to call that method.
 
 __attribute__((visibility("default")))
 void InitializeNativeLoader();
@@ -38,42 +45,39 @@
                                    jstring library_path,
                                    jstring permitted_path);
 
-__attribute__((visibility("default")))
-void* OpenNativeLibrary(JNIEnv* env,
-                        int32_t target_sdk_version,
-                        const char* path,
-                        jobject class_loader,
-                        jstring library_path,
-                        bool* needs_native_bridge,
-                        std::string* error_msg);
+__attribute__((visibility("default"))) void* OpenNativeLibrary(
+    JNIEnv* env, int32_t target_sdk_version, const char* path, jobject class_loader,
+    jstring library_path, bool* needs_native_bridge, char** error_msg);
 
 __attribute__((visibility("default"))) bool CloseNativeLibrary(void* handle,
                                                                const bool needs_native_bridge,
-                                                               std::string* error_msg);
+                                                               char** error_msg);
+
+__attribute__((visibility("default"))) void NativeLoaderFreeErrorMessage(char* msg);
 
 #if defined(__ANDROID__)
 // Look up linker namespace by class_loader. Returns nullptr if
 // there is no namespace associated with the class_loader.
 // TODO(b/79940628): move users to FindNativeLoaderNamespaceByClassLoader and remove this function.
-__attribute__((visibility("default")))
-android_namespace_t* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader);
-// That version works with native bridge namespaces, but requires use of OpenNativeLibrary.
-class NativeLoaderNamespace;
-__attribute__((visibility("default")))
-NativeLoaderNamespace* FindNativeLoaderNamespaceByClassLoader(
+__attribute__((visibility("default"))) struct android_namespace_t* FindNamespaceByClassLoader(
     JNIEnv* env, jobject class_loader);
+// That version works with native bridge namespaces, but requires use of OpenNativeLibrary.
+struct NativeLoaderNamespace;
+__attribute__((visibility("default"))) struct NativeLoaderNamespace*
+FindNativeLoaderNamespaceByClassLoader(JNIEnv* env, jobject class_loader);
 // Load library.  Unlinke OpenNativeLibrary above couldn't create namespace on demand, but does
 // not require access to JNIEnv either.
-__attribute__((visibility("default")))
-void* OpenNativeLibrary(NativeLoaderNamespace* ns,
-                        const char* path,
-                        bool* needs_native_bridge,
-                        std::string* error_msg);
+__attribute__((visibility("default"))) void* OpenNativeLibraryInNamespace(
+    struct NativeLoaderNamespace* ns, const char* path, bool* needs_native_bridge,
+    char** error_msg);
 #endif
 
 __attribute__((visibility("default")))
 void ResetNativeLoader();
 
-};  // namespace android
+#ifdef __cplusplus
+}  // extern "C"
+}  // namespace android
+#endif  // __cplusplus
 
 #endif  // NATIVE_BRIDGE_H_
diff --git a/libnativeloader/libnativeloader.map.txt b/libnativeloader/libnativeloader.map.txt
new file mode 100644
index 0000000..40c30bd
--- /dev/null
+++ b/libnativeloader/libnativeloader.map.txt
@@ -0,0 +1,31 @@
+#
+# Copyright (C) 2019 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/122710865): Prune these uses once the runtime APEX is complete.
+LIBNATIVELOADER_1 {
+  global:
+    OpenNativeLibrary;
+    InitializeNativeLoader;
+    ResetNativeLoader;
+    CloseNativeLibrary;
+    OpenNativeLibraryInNamespace;
+    FindNamespaceByClassLoader;
+    FindNativeLoaderNamespaceByClassLoader;
+    CreateClassLoaderNamespace;
+    NativeLoaderFreeErrorMessage;
+  local:
+    *;
+};
diff --git a/libnativeloader/native_loader.cpp b/libnativeloader/native_loader.cpp
index de7ea08..af7df72 100644
--- a/libnativeloader/native_loader.cpp
+++ b/libnativeloader/native_loader.cpp
@@ -52,7 +52,7 @@
 namespace android {
 
 #if defined(__ANDROID__)
-class NativeLoaderNamespace {
+struct NativeLoaderNamespace {
  public:
   NativeLoaderNamespace()
       : android_ns_(nullptr), native_bridge_ns_(nullptr) { }
@@ -151,14 +151,9 @@
  public:
   LibraryNamespaces() : initialized_(false) { }
 
-  NativeLoaderNamespace* Create(JNIEnv* env,
-                                uint32_t target_sdk_version,
-                                jobject class_loader,
-                                bool is_shared,
-                                bool is_for_vendor,
-                                jstring java_library_path,
-                                jstring java_permitted_path,
-                                std::string* error_msg) {
+  NativeLoaderNamespace* Create(JNIEnv* env, uint32_t target_sdk_version, jobject class_loader,
+                                bool is_shared, bool is_for_vendor, jstring java_library_path,
+                                jstring java_permitted_path, std::string* error_msg) {
     std::string library_path; // empty string by default.
 
     if (java_library_path != nullptr) {
@@ -628,20 +623,16 @@
   return nullptr;
 }
 
-void* OpenNativeLibrary(JNIEnv* env,
-                        int32_t target_sdk_version,
-                        const char* path,
-                        jobject class_loader,
-                        jstring library_path,
-                        bool* needs_native_bridge,
-                        std::string* error_msg) {
+void* OpenNativeLibrary(JNIEnv* env, int32_t target_sdk_version, const char* path,
+                        jobject class_loader, jstring library_path, bool* needs_native_bridge,
+                        char** error_msg) {
 #if defined(__ANDROID__)
   UNUSED(target_sdk_version);
   if (class_loader == nullptr) {
     *needs_native_bridge = false;
     void* handle = dlopen(path, RTLD_NOW);
     if (handle == nullptr) {
-      *error_msg = dlerror();
+      *error_msg = strdup(dlerror());
     }
     return handle;
   }
@@ -652,19 +643,16 @@
   if ((ns = g_namespaces->FindNamespaceByClassLoader(env, class_loader)) == nullptr) {
     // This is the case where the classloader was not created by ApplicationLoaders
     // In this case we create an isolated not-shared namespace for it.
-    if ((ns = g_namespaces->Create(env,
-                                   target_sdk_version,
-                                   class_loader,
-                                   false /* is_shared */,
-                                   false /* is_for_vendor */,
-                                   library_path,
-                                   nullptr,
-                                   error_msg)) == nullptr) {
+    std::string create_error_msg;
+    if ((ns = g_namespaces->Create(env, target_sdk_version, class_loader, false /* is_shared */,
+                                   false /* is_for_vendor */, library_path, nullptr,
+                                   &create_error_msg)) == nullptr) {
+      *error_msg = strdup(create_error_msg.c_str());
       return nullptr;
     }
   }
 
-  return OpenNativeLibrary(ns, path, needs_native_bridge, error_msg);
+  return OpenNativeLibraryInNamespace(ns, path, needs_native_bridge, error_msg);
 #else
   UNUSED(env, target_sdk_version, class_loader);
 
@@ -705,35 +693,40 @@
       if (handle != nullptr) {
         return handle;
       }
-      *error_msg = NativeBridgeGetError();
+      *error_msg = strdup(NativeBridgeGetError());
     } else {
-      *error_msg = dlerror();
+      *error_msg = strdup(dlerror());
     }
   }
   return nullptr;
 #endif
 }
 
-bool CloseNativeLibrary(void* handle, const bool needs_native_bridge, std::string* error_msg) {
+bool CloseNativeLibrary(void* handle, const bool needs_native_bridge, char** error_msg) {
   bool success;
   if (needs_native_bridge) {
     success = (NativeBridgeUnloadLibrary(handle) == 0);
     if (!success) {
-      *error_msg = NativeBridgeGetError();
+      *error_msg = strdup(NativeBridgeGetError());
     }
   } else {
     success = (dlclose(handle) == 0);
     if (!success) {
-      *error_msg = dlerror();
+      *error_msg = strdup(dlerror());
     }
   }
 
   return success;
 }
 
+void NativeLoaderFreeErrorMessage(char* msg) {
+  // The error messages get allocated through strdup, so we must call free on them.
+  free(msg);
+}
+
 #if defined(__ANDROID__)
-void* OpenNativeLibrary(NativeLoaderNamespace* ns, const char* path, bool* needs_native_bridge,
-                        std::string* error_msg) {
+void* OpenNativeLibraryInNamespace(NativeLoaderNamespace* ns, const char* path,
+                                   bool* needs_native_bridge, char** error_msg) {
   if (ns->is_android_namespace()) {
     android_dlextinfo extinfo;
     extinfo.flags = ANDROID_DLEXT_USE_NAMESPACE;
@@ -741,14 +734,14 @@
 
     void* handle = android_dlopen_ext(path, RTLD_NOW, &extinfo);
     if (handle == nullptr) {
-      *error_msg = dlerror();
+      *error_msg = strdup(dlerror());
     }
     *needs_native_bridge = false;
     return handle;
   } else {
     void* handle = NativeBridgeLoadLibraryExt(path, RTLD_NOW, ns->get_native_bridge_ns());
     if (handle == nullptr) {
-      *error_msg = NativeBridgeGetError();
+      *error_msg = strdup(NativeBridgeGetError());
     }
     *needs_native_bridge = true;
     return handle;
diff --git a/libnativeloader/test/Android.bp b/libnativeloader/test/Android.bp
index d528f30..1464e39 100644
--- a/libnativeloader/test/Android.bp
+++ b/libnativeloader/test/Android.bp
@@ -69,3 +69,14 @@
         "libbase",
     ],
 }
+
+// Build the test for the C API.
+cc_test {
+    name: "libnativeloader-api-tests",
+    host_supported: true,
+    test_per_src: true,
+    srcs: [
+        "api_test.c",
+    ],
+    header_libs: ["libnativeloader-dummy-headers"],
+}
diff --git a/libnativeloader/test/api_test.c b/libnativeloader/test/api_test.c
new file mode 100644
index 0000000..e7025fd
--- /dev/null
+++ b/libnativeloader/test/api_test.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2019 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.
+ */
+
+/* The main purpose of this test is to ensure this C header compiles in C, so
+ * that no C++ features inadvertently leak into the C ABI. */
+#include "nativeloader/native_loader.h"
+
+int main(int argc, char** argv) {
+  (void)argc;
+  (void)argv;
+  return 0;
+}
diff --git a/libstats/include/stats_event_list.h b/libstats/include/stats_event_list.h
index 162d1cf..b5bc5af 100644
--- a/libstats/include/stats_event_list.h
+++ b/libstats/include/stats_event_list.h
@@ -51,10 +51,6 @@
     explicit stats_event_list(int tag) : ret(0) {
         ctx = create_android_logger(static_cast<uint32_t>(tag));
     }
-    explicit stats_event_list(log_msg& log_msg) : ret(0) {
-        ctx = create_android_log_parser(log_msg.msg() + sizeof(uint32_t),
-                                        log_msg.entry.len - sizeof(uint32_t));
-    }
     ~stats_event_list() { android_log_destroy(&ctx); }
 
     int close() {
@@ -251,9 +247,6 @@
         }
         return ret >= 0;
     }
-
-    android_log_list_element read() { return android_log_read_next(ctx); }
-    android_log_list_element peek() { return android_log_peek_next(ctx); }
 };
 
 #endif
diff --git a/libstats/statsd_writer.c b/libstats/statsd_writer.c
index f00fc2d..f5be95c 100644
--- a/libstats/statsd_writer.c
+++ b/libstats/statsd_writer.c
@@ -31,6 +31,7 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <sys/uio.h>
 #include <sys/un.h>
 #include <time.h>
 #include <unistd.h>
diff --git a/libunwindstack/Android.bp b/libunwindstack/Android.bp
index e267f58..73dc921 100644
--- a/libunwindstack/Android.bp
+++ b/libunwindstack/Android.bp
@@ -127,6 +127,10 @@
         },
     },
 
+    whole_static_libs: [
+        "libdemangle"
+    ],
+
     static_libs: [
         "libprocinfo",
     ],
@@ -189,6 +193,7 @@
         "tests/MapInfoCreateMemoryTest.cpp",
         "tests/MapInfoGetElfTest.cpp",
         "tests/MapInfoGetLoadBiasTest.cpp",
+        "tests/MapInfoTest.cpp",
         "tests/MapsTest.cpp",
         "tests/MemoryBufferTest.cpp",
         "tests/MemoryCacheTest.cpp",
diff --git a/libunwindstack/ElfInterface.cpp b/libunwindstack/ElfInterface.cpp
index d0af94a..709e6c9 100644
--- a/libunwindstack/ElfInterface.cpp
+++ b/libunwindstack/ElfInterface.cpp
@@ -177,14 +177,14 @@
 template <typename EhdrType, typename PhdrType>
 uint64_t ElfInterface::GetLoadBias(Memory* memory) {
   EhdrType ehdr;
-  if (!memory->Read(0, &ehdr, sizeof(ehdr))) {
+  if (!memory->ReadFully(0, &ehdr, sizeof(ehdr))) {
     return false;
   }
 
   uint64_t offset = ehdr.e_phoff;
   for (size_t i = 0; i < ehdr.e_phnum; i++, offset += ehdr.e_phentsize) {
     PhdrType phdr;
-    if (!memory->Read(offset, &phdr, sizeof(phdr))) {
+    if (!memory->ReadFully(offset, &phdr, sizeof(phdr))) {
       return 0;
     }
     if (phdr.p_type == PT_LOAD && phdr.p_offset == 0) {
@@ -308,7 +308,7 @@
   // Skip the first header, it's always going to be NULL.
   offset += ehdr.e_shentsize;
   for (size_t i = 1; i < ehdr.e_shnum; i++, offset += ehdr.e_shentsize) {
-    if (!memory_->Read(offset, &shdr, sizeof(shdr))) {
+    if (!memory_->ReadFully(offset, &shdr, sizeof(shdr))) {
       return;
     }
 
@@ -320,7 +320,7 @@
         continue;
       }
       uint64_t str_offset = ehdr.e_shoff + shdr.sh_link * ehdr.e_shentsize;
-      if (!memory_->Read(str_offset, &str_shdr, sizeof(str_shdr))) {
+      if (!memory_->ReadFully(str_offset, &str_shdr, sizeof(str_shdr))) {
         continue;
       }
       if (str_shdr.sh_type != SHT_STRTAB) {
diff --git a/libunwindstack/MapInfo.cpp b/libunwindstack/MapInfo.cpp
index 39a09cf..b9d8b3d 100644
--- a/libunwindstack/MapInfo.cpp
+++ b/libunwindstack/MapInfo.cpp
@@ -221,6 +221,19 @@
   return elf.get();
 }
 
+bool MapInfo::GetFunctionName(uint64_t addr, std::string* name, uint64_t* func_offset) {
+  {
+    // Make sure no other thread is trying to update this elf object.
+    std::lock_guard<std::mutex> guard(mutex_);
+    if (elf == nullptr) {
+      return false;
+    }
+  }
+  // No longer need the lock, once the elf object is created, it is not deleted
+  // until this object is deleted.
+  return elf->GetFunctionName(addr, name, func_offset);
+}
+
 uint64_t MapInfo::GetLoadBias(const std::shared_ptr<Memory>& process_memory) {
   uint64_t cur_load_bias = load_bias.load();
   if (cur_load_bias != static_cast<uint64_t>(-1)) {
diff --git a/libunwindstack/RegsMips.cpp b/libunwindstack/RegsMips.cpp
index 14a4e31..f330fe0 100644
--- a/libunwindstack/RegsMips.cpp
+++ b/libunwindstack/RegsMips.cpp
@@ -135,7 +135,7 @@
   Memory* elf_memory = elf->memory();
   // Read from elf memory since it is usually more expensive to read from
   // process memory.
-  if (!elf_memory->Read(rel_pc, &data, sizeof(data))) {
+  if (!elf_memory->ReadFully(rel_pc, &data, sizeof(data))) {
     return false;
   }
 
@@ -160,7 +160,7 @@
 
   // read sc_pc and sc_regs[32] from stack
   uint64_t values[MIPS_REG_LAST];
-  if (!process_memory->Read(regs_[MIPS_REG_SP] + offset, values, sizeof(values))) {
+  if (!process_memory->ReadFully(regs_[MIPS_REG_SP] + offset, values, sizeof(values))) {
     return false;
   }
 
diff --git a/libunwindstack/Unwinder.cpp b/libunwindstack/Unwinder.cpp
index 8133639..57207de 100644
--- a/libunwindstack/Unwinder.cpp
+++ b/libunwindstack/Unwinder.cpp
@@ -26,10 +26,13 @@
 
 #include <android-base/stringprintf.h>
 
+#include <demangle.h>
+
 #include <unwindstack/Elf.h>
 #include <unwindstack/JitDebug.h>
 #include <unwindstack/MapInfo.h>
 #include <unwindstack/Maps.h>
+#include <unwindstack/Memory.h>
 #include <unwindstack/Unwinder.h>
 
 #if !defined(NO_LIBDEXFILE_SUPPORT)
@@ -306,7 +309,7 @@
   }
 
   if (!frame.function_name.empty()) {
-    data += " (" + frame.function_name;
+    data += " (" + demangle(frame.function_name.c_str());
     if (frame.function_offset != 0) {
       data += android::base::StringPrintf("+%" PRId64, frame.function_offset);
     }
@@ -327,4 +330,29 @@
 }
 #endif
 
+bool UnwinderFromPid::Init(ArchEnum arch) {
+  if (pid_ == getpid()) {
+    maps_ptr_.reset(new LocalMaps());
+  } else {
+    maps_ptr_.reset(new RemoteMaps(pid_));
+  }
+  if (!maps_ptr_->Parse()) {
+    return false;
+  }
+  maps_ = maps_ptr_.get();
+
+  process_memory_ = Memory::CreateProcessMemoryCached(pid_);
+
+  jit_debug_ptr_.reset(new JitDebug(process_memory_));
+  jit_debug_ = jit_debug_ptr_.get();
+  SetJitDebug(jit_debug_, arch);
+#if !defined(NO_LIBDEXFILE_SUPPORT)
+  dex_files_ptr_.reset(new DexFiles(process_memory_));
+  dex_files_ = dex_files_ptr_.get();
+  SetDexFiles(dex_files_, arch);
+#endif
+
+  return true;
+}
+
 }  // namespace unwindstack
diff --git a/libunwindstack/include/unwindstack/MapInfo.h b/libunwindstack/include/unwindstack/MapInfo.h
index 5e3d6f6..a9febd1 100644
--- a/libunwindstack/include/unwindstack/MapInfo.h
+++ b/libunwindstack/include/unwindstack/MapInfo.h
@@ -75,6 +75,8 @@
 
   Memory* CreateMemory(const std::shared_ptr<Memory>& process_memory);
 
+  bool GetFunctionName(uint64_t addr, std::string* name, uint64_t* func_offset);
+
  private:
   MapInfo(const MapInfo&) = delete;
   void operator=(const MapInfo&) = delete;
diff --git a/libunwindstack/include/unwindstack/Unwinder.h b/libunwindstack/include/unwindstack/Unwinder.h
index d7bbd9d..ab239c1 100644
--- a/libunwindstack/include/unwindstack/Unwinder.h
+++ b/libunwindstack/include/unwindstack/Unwinder.h
@@ -24,7 +24,9 @@
 #include <string>
 #include <vector>
 
+#include <unwindstack/DexFiles.h>
 #include <unwindstack/Error.h>
+#include <unwindstack/JitDebug.h>
 #include <unwindstack/Maps.h>
 #include <unwindstack/Memory.h>
 #include <unwindstack/Regs.h>
@@ -32,9 +34,7 @@
 namespace unwindstack {
 
 // Forward declarations.
-class DexFiles;
 class Elf;
-class JitDebug;
 enum ArchEnum : uint8_t;
 
 struct FrameData {
@@ -67,6 +67,11 @@
       : max_frames_(max_frames), maps_(maps), regs_(regs), process_memory_(process_memory) {
     frames_.reserve(max_frames);
   }
+  Unwinder(size_t max_frames, Maps* maps, std::shared_ptr<Memory> process_memory)
+      : max_frames_(max_frames), maps_(maps), process_memory_(process_memory) {
+    frames_.reserve(max_frames);
+  }
+
   ~Unwinder() = default;
 
   void Unwind(const std::vector<std::string>* initial_map_names_to_skip = nullptr,
@@ -81,6 +86,10 @@
 
   void SetJitDebug(JitDebug* jit_debug, ArchEnum arch);
 
+  void SetRegs(Regs* regs) { regs_ = regs; }
+  Maps* GetMaps() { return maps_; }
+  std::shared_ptr<Memory>& GetProcessMemory() { return process_memory_; }
+
   // Disabling the resolving of names results in the function name being
   // set to an empty string and the function offset being set to zero.
   void SetResolveNames(bool resolve) { resolve_names_ = resolve; }
@@ -92,7 +101,9 @@
   ErrorCode LastErrorCode() { return last_error_.code; }
   uint64_t LastErrorAddress() { return last_error_.address; }
 
- private:
+ protected:
+  Unwinder(size_t max_frames) : max_frames_(max_frames) { frames_.reserve(max_frames); }
+
   void FillInDexFrame();
   void FillInFrame(MapInfo* map_info, Elf* elf, uint64_t rel_pc, uint64_t func_pc,
                    uint64_t pc_adjustment);
@@ -110,6 +121,22 @@
   ErrorData last_error_;
 };
 
+class UnwinderFromPid : public Unwinder {
+ public:
+  UnwinderFromPid(size_t max_frames, pid_t pid) : Unwinder(max_frames), pid_(pid) {}
+  ~UnwinderFromPid() = default;
+
+  bool Init(ArchEnum arch);
+
+ private:
+  pid_t pid_;
+  std::unique_ptr<Maps> maps_ptr_;
+  std::unique_ptr<JitDebug> jit_debug_ptr_;
+#if !defined(NO_LIBDEXFILE_SUPPORT)
+  std::unique_ptr<DexFiles> dex_files_ptr_;
+#endif
+};
+
 }  // namespace unwindstack
 
 #endif  // _LIBUNWINDSTACK_UNWINDER_H
diff --git a/libunwindstack/tests/MapInfoTest.cpp b/libunwindstack/tests/MapInfoTest.cpp
new file mode 100644
index 0000000..e2cbb98
--- /dev/null
+++ b/libunwindstack/tests/MapInfoTest.cpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2018 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 <stdint.h>
+
+#include <gtest/gtest.h>
+
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Maps.h>
+
+#include "ElfFake.h"
+
+namespace unwindstack {
+
+TEST(MapInfoTest, maps_constructor_const_char) {
+  MapInfo prev_map(nullptr, 0, 0, 0, 0, "");
+  MapInfo map_info(&prev_map, 1, 2, 3, 4, "map");
+
+  EXPECT_EQ(&prev_map, map_info.prev_map);
+  EXPECT_EQ(1UL, map_info.start);
+  EXPECT_EQ(2UL, map_info.end);
+  EXPECT_EQ(3UL, map_info.offset);
+  EXPECT_EQ(4UL, map_info.flags);
+  EXPECT_EQ("map", map_info.name);
+  EXPECT_EQ(static_cast<uint64_t>(-1), map_info.load_bias);
+  EXPECT_EQ(0UL, map_info.elf_offset);
+  EXPECT_TRUE(map_info.elf.get() == nullptr);
+}
+
+TEST(MapInfoTest, maps_constructor_string) {
+  std::string name("string_map");
+  MapInfo prev_map(nullptr, 0, 0, 0, 0, "");
+  MapInfo map_info(&prev_map, 1, 2, 3, 4, name);
+
+  EXPECT_EQ(&prev_map, map_info.prev_map);
+  EXPECT_EQ(1UL, map_info.start);
+  EXPECT_EQ(2UL, map_info.end);
+  EXPECT_EQ(3UL, map_info.offset);
+  EXPECT_EQ(4UL, map_info.flags);
+  EXPECT_EQ("string_map", map_info.name);
+  EXPECT_EQ(static_cast<uint64_t>(-1), map_info.load_bias);
+  EXPECT_EQ(0UL, map_info.elf_offset);
+  EXPECT_TRUE(map_info.elf.get() == nullptr);
+}
+
+TEST(MapInfoTest, get_function_name) {
+  ElfFake* elf = new ElfFake(nullptr);
+  ElfInterfaceFake* interface = new ElfInterfaceFake(nullptr);
+  elf->FakeSetInterface(interface);
+  interface->FakePushFunctionData(FunctionData("function", 1000));
+
+  MapInfo map_info(nullptr, 1, 2, 3, 4, "");
+  map_info.elf.reset(elf);
+
+  std::string name;
+  uint64_t offset;
+  ASSERT_TRUE(map_info.GetFunctionName(1000, &name, &offset));
+  EXPECT_EQ("function", name);
+  EXPECT_EQ(1000UL, offset);
+}
+
+}  // namespace unwindstack
diff --git a/libunwindstack/tests/UnwindOfflineTest.cpp b/libunwindstack/tests/UnwindOfflineTest.cpp
index aab9ec2..0588a84 100644
--- a/libunwindstack/tests/UnwindOfflineTest.cpp
+++ b/libunwindstack/tests/UnwindOfflineTest.cpp
@@ -210,8 +210,8 @@
   ASSERT_EQ(4U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
   EXPECT_EQ(
       "  #00 pc 0001a9f8  libc.so (abort+64)\n"
-      "  #01 pc 00006a1b  libbase.so (_ZN7android4base14DefaultAborterEPKc+6)\n"
-      "  #02 pc 00007441  libbase.so (_ZN7android4base10LogMessageD2Ev+748)\n"
+      "  #01 pc 00006a1b  libbase.so (android::base::DefaultAborter(char const*)+6)\n"
+      "  #02 pc 00007441  libbase.so (android::base::LogMessage::~LogMessage()+748)\n"
       "  #03 pc 00015147  /does/not/exist/libhidlbase.so\n",
       frame_info);
   EXPECT_EQ(0xf31ea9f8U, unwinder.frames()[0].pc);
@@ -234,9 +234,10 @@
   ASSERT_EQ(2U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
   EXPECT_EQ(
       "  #00 pc 0006dc49  libandroid_runtime.so "
-      "(_ZN7android14AndroidRuntime15javaThreadShellEPv+80)\n"
+      "(android::AndroidRuntime::javaThreadShell(void*)+80)\n"
       "  #01 pc 0006dce5  libandroid_runtime.so "
-      "(_ZN7android14AndroidRuntime19javaCreateThreadEtcEPFiPvES1_PKcijPS1_)\n",
+      "(android::AndroidRuntime::javaCreateThreadEtc(int (*)(void*), void*, char const*, int, "
+      "unsigned int, void**))\n",
       frame_info);
   EXPECT_EQ(0xf1f6dc49U, unwinder.frames()[0].pc);
   EXPECT_EQ(0xd8fe6930U, unwinder.frames()[0].sp);
@@ -257,10 +258,10 @@
       "  #01 pc 000000000042a078  libunwindstack_test (SignalMiddleFunction+8)\n"
       "  #02 pc 000000000042a08c  libunwindstack_test (SignalOuterFunction+8)\n"
       "  #03 pc 000000000042d8fc  libunwindstack_test "
-      "(_ZN11unwindstackL19RemoteThroughSignalEij+20)\n"
+      "(unwindstack::RemoteThroughSignal(int, unsigned int)+20)\n"
       "  #04 pc 000000000042d8d8  libunwindstack_test "
-      "(_ZN11unwindstack37UnwindTest_remote_through_signal_Test8TestBodyEv+32)\n"
-      "  #05 pc 0000000000455d70  libunwindstack_test (_ZN7testing4Test3RunEv+392)\n",
+      "(unwindstack::UnwindTest_remote_through_signal_Test::TestBody()+32)\n"
+      "  #05 pc 0000000000455d70  libunwindstack_test (testing::Test::Run()+392)\n",
       frame_info);
   EXPECT_EQ(0x64d09d4fd8U, unwinder.frames()[0].pc);
   EXPECT_EQ(0x7fe0d84040U, unwinder.frames()[0].sp);
@@ -296,54 +297,57 @@
   std::string frame_info(DumpFrames(unwinder));
   ASSERT_EQ(69U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
   EXPECT_EQ(
-      "  #00 pc 00068fb8  libarttestd.so (_ZN3artL13CauseSegfaultEv+72)\n"
+      "  #00 pc 00068fb8  libarttestd.so (art::CauseSegfault()+72)\n"
       "  #01 pc 00067f00  libarttestd.so (Java_Main_unwindInProcess+10032)\n"
       "  #02 pc 000021a8  137-cfi.odex (offset 0x2000) (boolean Main.unwindInProcess(boolean, int, "
       "boolean)+136)\n"
       "  #03 pc 0000fe80  anonymous:ee74c000 (boolean Main.bar(boolean)+64)\n"
       "  #04 pc 006ad4d2  libartd.so (art_quick_invoke_stub+338)\n"
       "  #05 pc 00146ab5  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+885)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+885)\n"
       "  #06 pc 0039cf0d  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+653)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+653)\n"
       "  #07 pc 00392552  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+354)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+354)\n"
       "  #08 pc 0039399a  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+234)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+234)\n"
       "  #09 pc 00684362  libartd.so (artQuickToInterpreterBridge+1058)\n"
       "  #10 pc 006b35bd  libartd.so (art_quick_to_interpreter_bridge+77)\n"
       "  #11 pc 0000fe03  anonymous:ee74c000 (int Main.compare(Main, Main)+51)\n"
       "  #12 pc 006ad4d2  libartd.so (art_quick_invoke_stub+338)\n"
       "  #13 pc 00146ab5  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+885)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+885)\n"
       "  #14 pc 0039cf0d  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+653)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+653)\n"
       "  #15 pc 00392552  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+354)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+354)\n"
       "  #16 pc 0039399a  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+234)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+234)\n"
       "  #17 pc 00684362  libartd.so (artQuickToInterpreterBridge+1058)\n"
       "  #18 pc 006b35bd  libartd.so (art_quick_to_interpreter_bridge+77)\n"
       "  #19 pc 0000fd3b  anonymous:ee74c000 (int Main.compare(java.lang.Object, "
       "java.lang.Object)+107)\n"
       "  #20 pc 006ad4d2  libartd.so (art_quick_invoke_stub+338)\n"
       "  #21 pc 00146ab5  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+885)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+885)\n"
       "  #22 pc 0039cf0d  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+653)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+653)\n"
       "  #23 pc 00392552  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+354)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+354)\n"
       "  #24 pc 0039399a  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+234)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+234)\n"
       "  #25 pc 00684362  libartd.so (artQuickToInterpreterBridge+1058)\n"
       "  #26 pc 006b35bd  libartd.so (art_quick_to_interpreter_bridge+77)\n"
       "  #27 pc 0000fbdb  anonymous:ee74c000 (int "
@@ -351,81 +355,86 @@
       "java.util.Comparator)+331)\n"
       "  #28 pc 006ad6a2  libartd.so (art_quick_invoke_static_stub+418)\n"
       "  #29 pc 00146acb  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+907)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+907)\n"
       "  #30 pc 0039cf0d  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+653)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+653)\n"
       "  #31 pc 00392552  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+354)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+354)\n"
       "  #32 pc 0039399a  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+234)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+234)\n"
       "  #33 pc 00684362  libartd.so (artQuickToInterpreterBridge+1058)\n"
       "  #34 pc 006b35bd  libartd.so (art_quick_to_interpreter_bridge+77)\n"
       "  #35 pc 0000f624  anonymous:ee74c000 (boolean Main.foo()+164)\n"
       "  #36 pc 006ad4d2  libartd.so (art_quick_invoke_stub+338)\n"
       "  #37 pc 00146ab5  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+885)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+885)\n"
       "  #38 pc 0039cf0d  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+653)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+653)\n"
       "  #39 pc 00392552  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+354)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+354)\n"
       "  #40 pc 0039399a  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+234)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+234)\n"
       "  #41 pc 00684362  libartd.so (artQuickToInterpreterBridge+1058)\n"
       "  #42 pc 006b35bd  libartd.so (art_quick_to_interpreter_bridge+77)\n"
       "  #43 pc 0000eedb  anonymous:ee74c000 (void Main.runPrimary()+59)\n"
       "  #44 pc 006ad4d2  libartd.so (art_quick_invoke_stub+338)\n"
       "  #45 pc 00146ab5  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+885)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+885)\n"
       "  #46 pc 0039cf0d  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+653)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+653)\n"
       "  #47 pc 00392552  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+354)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+354)\n"
       "  #48 pc 0039399a  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+234)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+234)\n"
       "  #49 pc 00684362  libartd.so (artQuickToInterpreterBridge+1058)\n"
       "  #50 pc 006b35bd  libartd.so (art_quick_to_interpreter_bridge+77)\n"
       "  #51 pc 0000ac21  anonymous:ee74c000 (void Main.main(java.lang.String[])+97)\n"
       "  #52 pc 006ad6a2  libartd.so (art_quick_invoke_static_stub+418)\n"
       "  #53 pc 00146acb  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+907)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+907)\n"
       "  #54 pc 0039cf0d  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+653)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+653)\n"
       "  #55 pc 00392552  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+354)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+354)\n"
       "  #56 pc 0039399a  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+234)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+234)\n"
       "  #57 pc 00684362  libartd.so (artQuickToInterpreterBridge+1058)\n"
       "  #58 pc 006b35bd  libartd.so (art_quick_to_interpreter_bridge+77)\n"
       "  #59 pc 006ad6a2  libartd.so (art_quick_invoke_static_stub+418)\n"
       "  #60 pc 00146acb  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+907)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+907)\n"
       "  #61 pc 005aac95  libartd.so "
-      "(_ZN3artL18InvokeWithArgArrayERKNS_33ScopedObjectAccessAlreadyRunnableEPNS_9ArtMethodEPNS_"
-      "8ArgArrayEPNS_6JValueEPKc+85)\n"
+      "(art::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable const&, art::ArtMethod*, "
+      "art::ArgArray*, art::JValue*, char const*)+85)\n"
       "  #62 pc 005aab5a  libartd.so "
-      "(_ZN3art17InvokeWithVarArgsERKNS_33ScopedObjectAccessAlreadyRunnableEP8_jobjectP10_"
-      "jmethodIDPc+362)\n"
+      "(art::InvokeWithVarArgs(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, "
+      "_jmethodID*, char*)+362)\n"
       "  #63 pc 0048a3dd  libartd.so "
-      "(_ZN3art3JNI21CallStaticVoidMethodVEP7_JNIEnvP7_jclassP10_jmethodIDPc+125)\n"
+      "(art::JNI::CallStaticVoidMethodV(_JNIEnv*, _jclass*, _jmethodID*, char*)+125)\n"
       "  #64 pc 0018448c  libartd.so "
-      "(_ZN3art8CheckJNI11CallMethodVEPKcP7_JNIEnvP8_jobjectP7_jclassP10_jmethodIDPcNS_"
-      "9Primitive4TypeENS_10InvokeTypeE+1964)\n"
+      "(art::CheckJNI::CallMethodV(char const*, _JNIEnv*, _jobject*, _jclass*, _jmethodID*, char*, "
+      "art::Primitive::Type, art::InvokeType)+1964)\n"
       "  #65 pc 0017cf06  libartd.so "
-      "(_ZN3art8CheckJNI21CallStaticVoidMethodVEP7_JNIEnvP7_jclassP10_jmethodIDPc+70)\n"
+      "(art::CheckJNI::CallStaticVoidMethodV(_JNIEnv*, _jclass*, _jmethodID*, char*)+70)\n"
       "  #66 pc 00001d8c  dalvikvm32 "
-      "(_ZN7_JNIEnv20CallStaticVoidMethodEP7_jclassP10_jmethodIDz+60)\n"
+      "(_JNIEnv::CallStaticVoidMethod(_jclass*, _jmethodID*, ...)+60)\n"
       "  #67 pc 00001a80  dalvikvm32 (main+1312)\n"
       "  #68 pc 00018275  libc.so\n",
       frame_info);
@@ -597,32 +606,34 @@
       "  #03 pc 00462175  libartd.so (art_quick_invoke_stub_internal+68)\n"
       "  #04 pc 00467129  libartd.so (art_quick_invoke_stub+228)\n"
       "  #05 pc 000bf7a9  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+864)\n"
       "  #06 pc 00247833  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+382)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+382)\n"
       "  #07 pc 0022e935  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+244)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+244)\n"
       "  #08 pc 0022f71d  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+128)\n"
       "  #09 pc 00442865  libartd.so (artQuickToInterpreterBridge+796)\n"
       "  #10 pc 004666ff  libartd.so (art_quick_to_interpreter_bridge+30)\n"
       "  #11 pc 00011c31  anonymous:e2796000 (int Main.compare(Main, Main)+64)\n"
       "  #12 pc 00462175  libartd.so (art_quick_invoke_stub_internal+68)\n"
       "  #13 pc 00467129  libartd.so (art_quick_invoke_stub+228)\n"
       "  #14 pc 000bf7a9  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+864)\n"
       "  #15 pc 00247833  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+382)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+382)\n"
       "  #16 pc 0022e935  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+244)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+244)\n"
       "  #17 pc 0022f71d  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+128)\n"
       "  #18 pc 00442865  libartd.so (artQuickToInterpreterBridge+796)\n"
       "  #19 pc 004666ff  libartd.so (art_quick_to_interpreter_bridge+30)\n"
       "  #20 pc 00011b77  anonymous:e2796000 (int Main.compare(java.lang.Object, "
@@ -630,16 +641,17 @@
       "  #21 pc 00462175  libartd.so (art_quick_invoke_stub_internal+68)\n"
       "  #22 pc 00467129  libartd.so (art_quick_invoke_stub+228)\n"
       "  #23 pc 000bf7a9  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+864)\n"
       "  #24 pc 00247833  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+382)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+382)\n"
       "  #25 pc 0022e935  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+244)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+244)\n"
       "  #26 pc 0022f71d  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+128)\n"
       "  #27 pc 00442865  libartd.so (artQuickToInterpreterBridge+796)\n"
       "  #28 pc 004666ff  libartd.so (art_quick_to_interpreter_bridge+30)\n"
       "  #29 pc 00011a29  anonymous:e2796000 (int "
@@ -648,85 +660,90 @@
       "  #30 pc 00462175  libartd.so (art_quick_invoke_stub_internal+68)\n"
       "  #31 pc 0046722f  libartd.so (art_quick_invoke_static_stub+226)\n"
       "  #32 pc 000bf7bb  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+882)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+882)\n"
       "  #33 pc 00247833  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+382)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+382)\n"
       "  #34 pc 0022e935  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+244)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+244)\n"
       "  #35 pc 0022f71d  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+128)\n"
       "  #36 pc 00442865  libartd.so (artQuickToInterpreterBridge+796)\n"
       "  #37 pc 004666ff  libartd.so (art_quick_to_interpreter_bridge+30)\n"
       "  #38 pc 0001139b  anonymous:e2796000 (boolean Main.foo()+178)\n"
       "  #39 pc 00462175  libartd.so (art_quick_invoke_stub_internal+68)\n"
       "  #40 pc 00467129  libartd.so (art_quick_invoke_stub+228)\n"
       "  #41 pc 000bf7a9  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+864)\n"
       "  #42 pc 00247833  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+382)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+382)\n"
       "  #43 pc 0022e935  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+244)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+244)\n"
       "  #44 pc 0022f71d  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+128)\n"
       "  #45 pc 00442865  libartd.so (artQuickToInterpreterBridge+796)\n"
       "  #46 pc 004666ff  libartd.so (art_quick_to_interpreter_bridge+30)\n"
       "  #47 pc 00010aa7  anonymous:e2796000 (void Main.runPrimary()+70)\n"
       "  #48 pc 00462175  libartd.so (art_quick_invoke_stub_internal+68)\n"
       "  #49 pc 00467129  libartd.so (art_quick_invoke_stub+228)\n"
       "  #50 pc 000bf7a9  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+864)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+864)\n"
       "  #51 pc 00247833  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+382)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+382)\n"
       "  #52 pc 0022e935  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+244)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+244)\n"
       "  #53 pc 0022f71d  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+128)\n"
       "  #54 pc 00442865  libartd.so (artQuickToInterpreterBridge+796)\n"
       "  #55 pc 004666ff  libartd.so (art_quick_to_interpreter_bridge+30)\n"
       "  #56 pc 0000ba99  anonymous:e2796000 (void Main.main(java.lang.String[])+144)\n"
       "  #57 pc 00462175  libartd.so (art_quick_invoke_stub_internal+68)\n"
       "  #58 pc 0046722f  libartd.so (art_quick_invoke_static_stub+226)\n"
       "  #59 pc 000bf7bb  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+882)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+882)\n"
       "  #60 pc 00247833  libartd.so "
-      "(_ZN3art11interpreter34ArtInterpreterToCompiledCodeBridgeEPNS_6ThreadEPNS_9ArtMethodEPNS_"
-      "11ShadowFrameEtPNS_6JValueE+382)\n"
+      "(art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, "
+      "art::ShadowFrame*, unsigned short, art::JValue*)+382)\n"
       "  #61 pc 0022e935  libartd.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+244)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+244)\n"
       "  #62 pc 0022f71d  libartd.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+128)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+128)\n"
       "  #63 pc 00442865  libartd.so (artQuickToInterpreterBridge+796)\n"
       "  #64 pc 004666ff  libartd.so (art_quick_to_interpreter_bridge+30)\n"
       "  #65 pc 00462175  libartd.so (art_quick_invoke_stub_internal+68)\n"
       "  #66 pc 0046722f  libartd.so (art_quick_invoke_static_stub+226)\n"
       "  #67 pc 000bf7bb  libartd.so "
-      "(_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+882)\n"
+      "(art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char "
+      "const*)+882)\n"
       "  #68 pc 003b292d  libartd.so "
-      "(_ZN3artL18InvokeWithArgArrayERKNS_33ScopedObjectAccessAlreadyRunnableEPNS_9ArtMethodEPNS_"
-      "8ArgArrayEPNS_6JValueEPKc+52)\n"
+      "(art::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable const&, art::ArtMethod*, "
+      "art::ArgArray*, art::JValue*, char const*)+52)\n"
       "  #69 pc 003b26c3  libartd.so "
-      "(_ZN3art17InvokeWithVarArgsERKNS_33ScopedObjectAccessAlreadyRunnableEP8_jobjectP10_"
-      "jmethodIDSt9__va_list+210)\n"
+      "(art::InvokeWithVarArgs(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, "
+      "_jmethodID*, std::__va_list)+210)\n"
       "  #70 pc 00308411  libartd.so "
-      "(_ZN3art3JNI21CallStaticVoidMethodVEP7_JNIEnvP7_jclassP10_jmethodIDSt9__va_list+76)\n"
+      "(art::JNI::CallStaticVoidMethodV(_JNIEnv*, _jclass*, _jmethodID*, std::__va_list)+76)\n"
       "  #71 pc 000e6a9f  libartd.so "
-      "(_ZN3art8CheckJNI11CallMethodVEPKcP7_JNIEnvP8_jobjectP7_jclassP10_jmethodIDSt9__va_listNS_"
-      "9Primitive4TypeENS_10InvokeTypeE+1486)\n"
+      "(art::CheckJNI::CallMethodV(char const*, _JNIEnv*, _jobject*, _jclass*, _jmethodID*, "
+      "std::__va_list, art::Primitive::Type, art::InvokeType)+1486)\n"
       "  #72 pc 000e19b9  libartd.so "
-      "(_ZN3art8CheckJNI21CallStaticVoidMethodVEP7_JNIEnvP7_jclassP10_jmethodIDSt9__va_list+40)\n"
+      "(art::CheckJNI::CallStaticVoidMethodV(_JNIEnv*, _jclass*, _jmethodID*, std::__va_list)+40)\n"
       "  #73 pc 0000159f  dalvikvm32 "
-      "(_ZN7_JNIEnv20CallStaticVoidMethodEP7_jclassP10_jmethodIDz+30)\n"
+      "(_JNIEnv::CallStaticVoidMethod(_jclass*, _jmethodID*, ...)+30)\n"
       "  #74 pc 00001349  dalvikvm32 (main+896)\n"
       "  #75 pc 000850c9  libc.so\n",
       frame_info);
@@ -997,41 +1014,44 @@
       "(com.example.simpleperf.simpleperfexamplewithnative.MixActivity$1.run+60)\n"
       "  #02 pc 004135bb  libart.so (art_quick_osr_stub+42)\n"
       "  #03 pc 002657a5  libart.so "
-      "(_ZN3art3jit3Jit25MaybeDoOnStackReplacementEPNS_6ThreadEPNS_9ArtMethodEjiPNS_6JValueE+876)\n"
+      "(art::jit::Jit::MaybeDoOnStackReplacement(art::Thread*, art::ArtMethod*, unsigned int, int, "
+      "art::JValue*)+876)\n"
       "  #04 pc 004021a7  libart.so (MterpMaybeDoOnStackReplacement+86)\n"
       "  #05 pc 00412474  libart.so (ExecuteMterpImpl+66164)\n"
       "  #06 pc cd8365b0  <unknown>\n"  // symbol in dex file
       "  #07 pc 001d7f1b  libart.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+374)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+374)\n"
       "  #08 pc 001dc593  libart.so "
-      "(_ZN3art11interpreter33ArtInterpreterToInterpreterBridgeEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameEPNS_6JValueE+154)\n"
+      "(art::interpreter::ArtInterpreterToInterpreterBridge(art::Thread*, "
+      "art::CodeItemDataAccessor const&, art::ShadowFrame*, art::JValue*)+154)\n"
       "  #09 pc 001f4d01  libart.so "
-      "(_ZN3art11interpreter6DoCallILb0ELb0EEEbPNS_9ArtMethodEPNS_6ThreadERNS_11ShadowFrameEPKNS_"
-      "11InstructionEtPNS_6JValueE+732)\n"
+      "(bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, "
+      "art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+732)\n"
       "  #10 pc 003fe427  libart.so (MterpInvokeInterface+1354)\n"
       "  #11 pc 00405b94  libart.so (ExecuteMterpImpl+14740)\n"
       "  #12 pc 7004873e  <unknown>\n"  // symbol in dex file
       "  #13 pc 001d7f1b  libart.so "
-      "(_ZN3art11interpreterL7ExecuteEPNS_6ThreadERKNS_20CodeItemDataAccessorERNS_11ShadowFrameENS_"
-      "6JValueEb+374)\n"
+      "(art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, "
+      "art::ShadowFrame&, art::JValue, bool)+374)\n"
       "  #14 pc 001dc4d5  libart.so "
-      "(_ZN3art11interpreter30EnterInterpreterFromEntryPointEPNS_6ThreadERKNS_"
-      "20CodeItemDataAccessorEPNS_11ShadowFrameE+92)\n"
+      "(art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor "
+      "const&, art::ShadowFrame*)+92)\n"
       "  #15 pc 003f25ab  libart.so (artQuickToInterpreterBridge+970)\n"
       "  #16 pc 00417aff  libart.so (art_quick_to_interpreter_bridge+30)\n"
       "  #17 pc 00413575  libart.so (art_quick_invoke_stub_internal+68)\n"
       "  #18 pc 00418531  libart.so (art_quick_invoke_stub+236)\n"
-      "  #19 pc 000b468d  libart.so (_ZN3art9ArtMethod6InvokeEPNS_6ThreadEPjjPNS_6JValueEPKc+136)\n"
+      "  #19 pc 000b468d  libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned "
+      "int, art::JValue*, char const*)+136)\n"
       "  #20 pc 00362f49  libart.so "
-      "(_ZN3art12_GLOBAL__N_118InvokeWithArgArrayERKNS_33ScopedObjectAccessAlreadyRunnableEPNS_"
-      "9ArtMethodEPNS0_8ArgArrayEPNS_6JValueEPKc+52)\n"
+      "(art::(anonymous namespace)::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable "
+      "const&, art::ArtMethod*, art::(anonymous namespace)::ArgArray*, art::JValue*, char "
+      "const*)+52)\n"
       "  #21 pc 00363cd9  libart.so "
-      "(_ZN3art35InvokeVirtualOrInterfaceWithJValuesERKNS_33ScopedObjectAccessAlreadyRunnableEP8_"
-      "jobjectP10_jmethodIDP6jvalue+332)\n"
-      "  #22 pc 003851dd  libart.so (_ZN3art6Thread14CreateCallbackEPv+868)\n"
-      "  #23 pc 00062925  libc.so (_ZL15__pthread_startPv+22)\n"
+      "(art::InvokeVirtualOrInterfaceWithJValues(art::ScopedObjectAccessAlreadyRunnable const&, "
+      "_jobject*, _jmethodID*, jvalue*)+332)\n"
+      "  #22 pc 003851dd  libart.so (art::Thread::CreateCallback(void*)+868)\n"
+      "  #23 pc 00062925  libc.so (__pthread_start(void*)+22)\n"
       "  #24 pc 0001de39  libc.so (__start_thread+24)\n",
       frame_info);
   EXPECT_EQ(0xd025c788U, unwinder.frames()[0].pc);
@@ -1107,8 +1127,8 @@
       "(com.example.simpleperf.simpleperfexamplewithnative.MixActivity$1.run+60)\n"
       "  #02 pc 004135bb  libart.so (art_quick_osr_stub+42)\n"
 
-      "  #03 pc 003851dd  libart.so (_ZN3art6Thread14CreateCallbackEPv+868)\n"
-      "  #04 pc 00062925  libc.so (_ZL15__pthread_startPv+22)\n"
+      "  #03 pc 003851dd  libart.so (art::Thread::CreateCallback(void*)+868)\n"
+      "  #04 pc 00062925  libc.so (__pthread_start(void*)+22)\n"
       "  #05 pc 0001de39  libc.so (__start_thread+24)\n",
       frame_info);
 
@@ -1139,22 +1159,22 @@
       "  #01 pc 0032bfeb  libunwindstack_test (SignalMiddleFunction+2)\n"
       "  #02 pc 0032bff3  libunwindstack_test (SignalOuterFunction+2)\n"
       "  #03 pc 0032fed3  libunwindstack_test "
-      "(_ZN11unwindstackL19SignalCallerHandlerEiP7siginfoPv+26)\n"
+      "(unwindstack::SignalCallerHandler(int, siginfo*, void*)+26)\n"
       "  #04 pc 00026528  libc.so\n"
       "  #05 pc 00000000  <unknown>\n"
       "  #06 pc 0032c2d9  libunwindstack_test (InnerFunction+736)\n"
       "  #07 pc 0032cc4f  libunwindstack_test (MiddleFunction+42)\n"
       "  #08 pc 0032cc81  libunwindstack_test (OuterFunction+42)\n"
       "  #09 pc 0032e547  libunwindstack_test "
-      "(_ZN11unwindstackL19RemoteThroughSignalEij+270)\n"
+      "(unwindstack::RemoteThroughSignal(int, unsigned int)+270)\n"
       "  #10 pc 0032ed99  libunwindstack_test "
-      "(_ZN11unwindstack55UnwindTest_remote_through_signal_with_invalid_func_Test8TestBodyEv+16)\n"
-      "  #11 pc 00354453  libunwindstack_test (_ZN7testing4Test3RunEv+154)\n"
-      "  #12 pc 00354de7  libunwindstack_test (_ZN7testing8TestInfo3RunEv+194)\n"
-      "  #13 pc 00355105  libunwindstack_test (_ZN7testing8TestCase3RunEv+180)\n"
+      "(unwindstack::UnwindTest_remote_through_signal_with_invalid_func_Test::TestBody()+16)\n"
+      "  #11 pc 00354453  libunwindstack_test (testing::Test::Run()+154)\n"
+      "  #12 pc 00354de7  libunwindstack_test (testing::TestInfo::Run()+194)\n"
+      "  #13 pc 00355105  libunwindstack_test (testing::TestCase::Run()+180)\n"
       "  #14 pc 0035a215  libunwindstack_test "
-      "(_ZN7testing8internal12UnitTestImpl11RunAllTestsEv+664)\n"
-      "  #15 pc 00359f4f  libunwindstack_test (_ZN7testing8UnitTest3RunEv+110)\n"
+      "(testing::internal::UnitTestImpl::RunAllTests()+664)\n"
+      "  #15 pc 00359f4f  libunwindstack_test (testing::UnitTest::Run()+110)\n"
       "  #16 pc 0034d3db  libunwindstack_test (main+38)\n"
       "  #17 pc 00092c0d  libc.so (__libc_init+48)\n"
       "  #18 pc 0004202f  libunwindstack_test (_start_main+38)\n",
@@ -1213,9 +1233,9 @@
   EXPECT_EQ(
       "  #00 pc 0005138c  libc.so (__ioctl+8)\n"
       "  #01 pc 0002140f  libc.so (ioctl+30)\n"
-      "  #02 pc 00039535  libbinder.so (_ZN7android14IPCThreadState14talkWithDriverEb+204)\n"
-      "  #03 pc 00039633  libbinder.so (_ZN7android14IPCThreadState20getAndExecuteCommandEv+10)\n"
-      "  #04 pc 00039b57  libbinder.so (_ZN7android14IPCThreadState14joinThreadPoolEb+38)\n"
+      "  #02 pc 00039535  libbinder.so (android::IPCThreadState::talkWithDriver(bool)+204)\n"
+      "  #03 pc 00039633  libbinder.so (android::IPCThreadState::getAndExecuteCommand()+10)\n"
+      "  #04 pc 00039b57  libbinder.so (android::IPCThreadState::joinThreadPool(bool)+38)\n"
       "  #05 pc 00000c21  mediaserver (main+104)\n"
       "  #06 pc 00084b89  libc.so (__libc_init+48)\n"
       "  #07 pc 00000b77  mediaserver (_start_main+38)\n",
diff --git a/libunwindstack/tests/UnwindTest.cpp b/libunwindstack/tests/UnwindTest.cpp
index ea992c7..a91bd95 100644
--- a/libunwindstack/tests/UnwindTest.cpp
+++ b/libunwindstack/tests/UnwindTest.cpp
@@ -44,6 +44,13 @@
 
 namespace unwindstack {
 
+enum TestTypeEnum : uint8_t {
+  TEST_TYPE_LOCAL_UNWINDER = 0,
+  TEST_TYPE_LOCAL_UNWINDER_FROM_PID,
+  TEST_TYPE_REMOTE,
+  TEST_TYPE_REMOTE_WITH_INVALID_CALL,
+};
+
 static std::atomic_bool g_ready;
 static volatile bool g_ready_for_remote;
 static volatile bool g_signal_ready_for_remote;
@@ -88,10 +95,10 @@
   SignalOuterFunction();
 }
 
-static std::string ErrorMsg(const std::vector<const char*>& function_names, Unwinder& unwinder) {
+static std::string ErrorMsg(const std::vector<const char*>& function_names, Unwinder* unwinder) {
   std::string unwind;
-  for (size_t i = 0; i < unwinder.NumFrames(); i++) {
-    unwind += unwinder.FormatFrame(i) + '\n';
+  for (size_t i = 0; i < unwinder->NumFrames(); i++) {
+    unwind += unwinder->FormatFrame(i) + '\n';
   }
 
   return std::string(
@@ -100,14 +107,10 @@
          function_names.front() + "\n" + "Unwind data:\n" + unwind;
 }
 
-static void VerifyUnwind(pid_t pid, Maps* maps, Regs* regs,
-                         std::vector<const char*> expected_function_names) {
-  auto process_memory(Memory::CreateProcessMemory(pid));
+static void VerifyUnwind(Unwinder* unwinder, std::vector<const char*> expected_function_names) {
+  unwinder->Unwind();
 
-  Unwinder unwinder(512, maps, regs, process_memory);
-  unwinder.Unwind();
-
-  for (auto& frame : unwinder.frames()) {
+  for (auto& frame : unwinder->frames()) {
     if (frame.function_name == expected_function_names.back()) {
       expected_function_names.pop_back();
       if (expected_function_names.empty()) {
@@ -119,35 +122,55 @@
   ASSERT_TRUE(expected_function_names.empty()) << ErrorMsg(expected_function_names, unwinder);
 }
 
+static void VerifyUnwind(pid_t pid, Maps* maps, Regs* regs,
+                         std::vector<const char*> expected_function_names) {
+  auto process_memory(Memory::CreateProcessMemory(pid));
+
+  Unwinder unwinder(512, maps, regs, process_memory);
+  VerifyUnwind(&unwinder, expected_function_names);
+}
+
 // This test assumes that this code is compiled with optimizations turned
 // off. If this doesn't happen, then all of the calls will be optimized
 // away.
-extern "C" void InnerFunction(bool local, bool trigger_invalid_call) {
-  if (local) {
-    LocalMaps maps;
-    ASSERT_TRUE(maps.Parse());
-    std::unique_ptr<Regs> regs(Regs::CreateFromLocal());
-    RegsGetLocal(regs.get());
-
-    VerifyUnwind(getpid(), &maps, regs.get(), kFunctionOrder);
-  } else {
+extern "C" void InnerFunction(TestTypeEnum test_type) {
+  if (test_type == TEST_TYPE_REMOTE || test_type == TEST_TYPE_REMOTE_WITH_INVALID_CALL) {
     g_ready_for_remote = true;
     g_ready = true;
-    if (trigger_invalid_call) {
+    if (test_type == TEST_TYPE_REMOTE_WITH_INVALID_CALL) {
       void (*crash_func)() = nullptr;
       crash_func();
     }
     while (!g_finish.load()) {
     }
+    return;
   }
+
+  std::unique_ptr<Unwinder> unwinder;
+  std::unique_ptr<Regs> regs(Regs::CreateFromLocal());
+  RegsGetLocal(regs.get());
+  std::unique_ptr<Maps> maps;
+
+  if (test_type == TEST_TYPE_LOCAL_UNWINDER) {
+    maps.reset(new LocalMaps());
+    ASSERT_TRUE(maps->Parse());
+    auto process_memory(Memory::CreateProcessMemory(getpid()));
+    unwinder.reset(new Unwinder(512, maps.get(), regs.get(), process_memory));
+  } else {
+    UnwinderFromPid* unwinder_from_pid = new UnwinderFromPid(512, getpid());
+    ASSERT_TRUE(unwinder_from_pid->Init(regs->Arch()));
+    unwinder_from_pid->SetRegs(regs.get());
+    unwinder.reset(unwinder_from_pid);
+  }
+  VerifyUnwind(unwinder.get(), kFunctionOrder);
 }
 
-extern "C" void MiddleFunction(bool local, bool trigger_invalid_call) {
-  InnerFunction(local, trigger_invalid_call);
+extern "C" void MiddleFunction(TestTypeEnum test_type) {
+  InnerFunction(test_type);
 }
 
-extern "C" void OuterFunction(bool local, bool trigger_invalid_call) {
-  MiddleFunction(local, trigger_invalid_call);
+extern "C" void OuterFunction(TestTypeEnum test_type) {
+  MiddleFunction(test_type);
 }
 
 class UnwindTest : public ::testing::Test {
@@ -156,7 +179,11 @@
 };
 
 TEST_F(UnwindTest, local) {
-  OuterFunction(true, false);
+  OuterFunction(TEST_TYPE_LOCAL_UNWINDER);
+}
+
+TEST_F(UnwindTest, local_use_from_pid) {
+  OuterFunction(TEST_TYPE_LOCAL_UNWINDER_FROM_PID);
 }
 
 void WaitForRemote(pid_t pid, uint64_t addr, bool leave_attached, bool* completed) {
@@ -191,7 +218,7 @@
 TEST_F(UnwindTest, remote) {
   pid_t pid;
   if ((pid = fork()) == 0) {
-    OuterFunction(false, false);
+    OuterFunction(TEST_TYPE_REMOTE);
     exit(0);
   }
   ASSERT_NE(-1, pid);
@@ -212,11 +239,39 @@
       << "ptrace detach failed with unexpected error: " << strerror(errno);
 }
 
+TEST_F(UnwindTest, unwind_from_pid_remote) {
+  pid_t pid;
+  if ((pid = fork()) == 0) {
+    OuterFunction(TEST_TYPE_REMOTE);
+    exit(0);
+  }
+  ASSERT_NE(-1, pid);
+  TestScopedPidReaper reap(pid);
+
+  bool completed;
+  WaitForRemote(pid, reinterpret_cast<uint64_t>(&g_ready_for_remote), true, &completed);
+  ASSERT_TRUE(completed) << "Timed out waiting for remote process to be ready.";
+
+  std::unique_ptr<Regs> regs(Regs::RemoteGet(pid));
+  ASSERT_TRUE(regs.get() != nullptr);
+
+  UnwinderFromPid unwinder(512, pid);
+  ASSERT_TRUE(unwinder.Init(regs->Arch()));
+  unwinder.SetRegs(regs.get());
+
+  VerifyUnwind(&unwinder, kFunctionOrder);
+
+  // Verify that calling the same object works again.
+
+  ASSERT_EQ(0, ptrace(PTRACE_DETACH, pid, 0, 0))
+      << "ptrace detach failed with unexpected error: " << strerror(errno);
+}
+
 TEST_F(UnwindTest, from_context) {
   std::atomic_int tid(0);
   std::thread thread([&]() {
     tid = syscall(__NR_gettid);
-    OuterFunction(false, false);
+    OuterFunction(TEST_TYPE_REMOTE);
   });
 
   struct sigaction act, oldact;
@@ -266,7 +321,7 @@
     act.sa_flags = SA_RESTART | SA_ONSTACK | sa_flags;
     ASSERT_EQ(0, sigaction(signal, &act, &oldact));
 
-    OuterFunction(false, signal == SIGSEGV);
+    OuterFunction(signal != SIGSEGV ? TEST_TYPE_REMOTE : TEST_TYPE_REMOTE_WITH_INVALID_CALL);
     exit(0);
   }
   ASSERT_NE(-1, pid);
diff --git a/libunwindstack/tests/UnwinderTest.cpp b/libunwindstack/tests/UnwinderTest.cpp
index 1fdeee5..49aeeb3 100644
--- a/libunwindstack/tests/UnwinderTest.cpp
+++ b/libunwindstack/tests/UnwinderTest.cpp
@@ -1080,6 +1080,12 @@
             Unwinder::FormatFrame(frame, false));
   EXPECT_EQ("  #01 pc 00001000  /fake/libfake.so (function)", Unwinder::FormatFrame(frame, true));
 
+  // Verify the function name is demangled.
+  frame.function_name = "_ZN4funcEv";
+  EXPECT_EQ("  #01 pc 0000000000001000  /fake/libfake.so (func())",
+            Unwinder::FormatFrame(frame, false));
+  EXPECT_EQ("  #01 pc 00001000  /fake/libfake.so (func())", Unwinder::FormatFrame(frame, true));
+
   frame.function_name = "";
   EXPECT_EQ("  #01 pc 0000000000001000  /fake/libfake.so", Unwinder::FormatFrame(frame, false));
   EXPECT_EQ("  #01 pc 00001000  /fake/libfake.so", Unwinder::FormatFrame(frame, true));
diff --git a/libunwindstack/tools/unwind.cpp b/libunwindstack/tools/unwind.cpp
index e729453..1812e50 100644
--- a/libunwindstack/tools/unwind.cpp
+++ b/libunwindstack/tools/unwind.cpp
@@ -57,12 +57,6 @@
 }
 
 void DoUnwind(pid_t pid) {
-  unwindstack::RemoteMaps remote_maps(pid);
-  if (!remote_maps.Parse()) {
-    printf("Failed to parse map data.\n");
-    return;
-  }
-
   unwindstack::Regs* regs = unwindstack::Regs::RemoteGet(pid);
   if (regs == nullptr) {
     printf("Unable to get remote reg data\n");
@@ -95,15 +89,13 @@
   }
   printf("\n");
 
-  auto process_memory = unwindstack::Memory::CreateProcessMemory(pid);
-  unwindstack::Unwinder unwinder(128, &remote_maps, regs, process_memory);
+  unwindstack::UnwinderFromPid unwinder(1024, pid);
+  if (!unwinder.Init(regs->Arch())) {
+    printf("Failed to init unwinder object.\n");
+    return;
+  }
 
-  unwindstack::JitDebug jit_debug(process_memory);
-  unwinder.SetJitDebug(&jit_debug, regs->Arch());
-
-  unwindstack::DexFiles dex_files(process_memory);
-  unwinder.SetDexFiles(&dex_files, regs->Arch());
-
+  unwinder.SetRegs(regs);
   unwinder.Unwind();
 
   // Print the frames.
diff --git a/libunwindstack/tools/unwind_for_offline.cpp b/libunwindstack/tools/unwind_for_offline.cpp
index 5ae8874..4f67d67 100644
--- a/libunwindstack/tools/unwind_for_offline.cpp
+++ b/libunwindstack/tools/unwind_for_offline.cpp
@@ -240,12 +240,6 @@
     return 1;
   }
 
-  unwindstack::RemoteMaps maps(pid);
-  if (!maps.Parse()) {
-    printf("Unable to parse maps.\n");
-    return 1;
-  }
-
   // Save the current state of the registers.
   if (!SaveRegs(regs)) {
     return 1;
@@ -253,35 +247,38 @@
 
   // Do an unwind so we know how much of the stack to save, and what
   // elf files are involved.
+  unwindstack::UnwinderFromPid unwinder(1024, pid);
+  if (!unwinder.Init(regs->Arch())) {
+    printf("Unable to init unwinder object.\n");
+    return 1;
+  }
+  unwinder.SetRegs(regs);
   uint64_t sp = regs->sp();
-  auto process_memory = unwindstack::Memory::CreateProcessMemory(pid);
-  unwindstack::JitDebug jit_debug(process_memory);
-  unwindstack::Unwinder unwinder(1024, &maps, regs, process_memory);
-  unwinder.SetJitDebug(&jit_debug, regs->Arch());
   unwinder.Unwind();
 
   std::unordered_map<uint64_t, map_info_t> maps_by_start;
   std::vector<std::pair<uint64_t, uint64_t>> stacks;
+  unwindstack::Maps* maps = unwinder.GetMaps();
   uint64_t sp_map_start = 0;
-  unwindstack::MapInfo* map_info = maps.Find(sp);
+  unwindstack::MapInfo* map_info = maps->Find(sp);
   if (map_info != nullptr) {
     stacks.emplace_back(std::make_pair(sp, map_info->end));
     sp_map_start = map_info->start;
   }
 
   for (const auto& frame : unwinder.frames()) {
-    map_info = maps.Find(frame.sp);
+    map_info = maps->Find(frame.sp);
     if (map_info != nullptr && sp_map_start != map_info->start) {
       stacks.emplace_back(std::make_pair(frame.sp, map_info->end));
       sp_map_start = map_info->start;
     }
 
     if (maps_by_start.count(frame.map_start) == 0) {
-      map_info = maps.Find(frame.map_start);
+      map_info = maps->Find(frame.map_start);
 
       auto info = FillInAndGetMapInfo(maps_by_start, map_info);
       bool file_copied = false;
-      SaveMapInformation(process_memory, info, &file_copied);
+      SaveMapInformation(unwinder.GetProcessMemory(), info, &file_copied);
 
       // If you are using a a linker that creates two maps (one read-only, one
       // read-executable), it's necessary to capture the previous map
@@ -291,7 +288,7 @@
           prev_map->flags == PROT_READ && map_info->name == prev_map->name &&
           maps_by_start.count(prev_map->start) == 0) {
         info = FillInAndGetMapInfo(maps_by_start, prev_map);
-        SaveMapInformation(process_memory, info, &file_copied);
+        SaveMapInformation(unwinder.GetProcessMemory(), info, &file_copied);
       }
     }
   }
diff --git a/lmkd/lmkd.c b/lmkd/lmkd.c
index 7794f81..ca78c38 100644
--- a/lmkd/lmkd.c
+++ b/lmkd/lmkd.c
@@ -16,6 +16,7 @@
 
 #define LOG_TAG "lowmemorykiller"
 
+#include <dirent.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <pwd.h>
@@ -28,18 +29,22 @@
 #include <sys/epoll.h>
 #include <sys/eventfd.h>
 #include <sys/mman.h>
+#include <sys/resource.h>
 #include <sys/socket.h>
 #include <sys/sysinfo.h>
+#include <sys/time.h>
 #include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 
 #include <cutils/properties.h>
+#include <cutils/sched_policy.h>
 #include <cutils/sockets.h>
 #include <lmkd.h>
 #include <log/log.h>
 #include <log/log_event_list.h>
 #include <log/log_time.h>
+#include <system/thread_defs.h>
 
 #ifdef LMKD_LOG_STATS
 #include "statslog.h"
@@ -1261,6 +1266,41 @@
     return maxprocp;
 }
 
+static void set_process_group_and_prio(int pid, SchedPolicy sp, int prio) {
+    DIR* d;
+    char proc_path[PATH_MAX];
+    struct dirent* de;
+
+    snprintf(proc_path, sizeof(proc_path), "/proc/%d/task", pid);
+    if (!(d = opendir(proc_path))) {
+        ALOGW("Failed to open %s; errno=%d: process pid(%d) might have died", proc_path, errno,
+              pid);
+        return;
+    }
+
+    while ((de = readdir(d))) {
+        int t_pid;
+
+        if (de->d_name[0] == '.') continue;
+        t_pid = atoi(de->d_name);
+
+        if (!t_pid) {
+            ALOGW("Failed to get t_pid for '%s' of pid(%d)", de->d_name, pid);
+            continue;
+        }
+
+        if (setpriority(PRIO_PROCESS, t_pid, prio) && errno != ESRCH) {
+            ALOGW("Unable to raise priority of killing t_pid (%d): errno=%d", t_pid, errno);
+        }
+
+        if (set_cpuset_policy(t_pid, sp)) {
+            ALOGW("Failed to set_cpuset_policy on pid(%d) t_pid(%d) to %d", pid, t_pid, (int)sp);
+            continue;
+        }
+    }
+    closedir(d);
+}
+
 static int last_killed_pid = -1;
 
 /* Kill one process specified by procp.  Returns the size of the process killed */
@@ -1301,6 +1341,9 @@
 
     /* CAP_KILL required */
     r = kill(pid, SIGKILL);
+
+    set_process_group_and_prio(pid, SP_FOREGROUND, ANDROID_PRIORITY_HIGHEST);
+
     inc_killcnt(procp->oomadj);
     ALOGI("Kill '%s' (%d), uid %d, oom_adj %d to free %ldkB",
         taskname, pid, uid, procp->oomadj, tasksize * page_k);
diff --git a/lmkd/tests/Android.bp b/lmkd/tests/Android.bp
index cbf44e9..4e845fd 100644
--- a/lmkd/tests/Android.bp
+++ b/lmkd/tests/Android.bp
@@ -18,6 +18,7 @@
     shared_libs: [
         "libbase",
         "liblog",
+        "libcutils",
     ],
 
     static_libs: [
diff --git a/logd/.clang-format b/logd/.clang-format
deleted file mode 100644
index 393c309..0000000
--- a/logd/.clang-format
+++ /dev/null
@@ -1,11 +0,0 @@
-BasedOnStyle: Google
-AllowShortFunctionsOnASingleLine: false
-
-CommentPragmas: NOLINT:.*
-DerivePointerAlignment: false
-IndentWidth: 4
-PointerAlignment: Left
-TabWidth: 4
-PenaltyExcessCharacter: 32
-
-Cpp11BracedListStyle: false
diff --git a/logd/.clang-format b/logd/.clang-format
new file mode 120000
index 0000000..1af4f51
--- /dev/null
+++ b/logd/.clang-format
@@ -0,0 +1 @@
+../.clang-format-4
\ No newline at end of file
diff --git a/logd/LogAudit.cpp b/logd/LogAudit.cpp
index 18d5287..470ffed 100644
--- a/logd/LogAudit.cpp
+++ b/logd/LogAudit.cpp
@@ -300,7 +300,7 @@
         return 0;
     }
 
-    log_time now;
+    log_time now(log_time::EPOCH);
 
     static const char audit_str[] = " audit(";
     char* timeptr = strstr(str, audit_str);
diff --git a/logd/LogBuffer.cpp b/logd/LogBuffer.cpp
index fbdbf79..9cbc7c4 100644
--- a/logd/LogBuffer.cpp
+++ b/logd/LogBuffer.cpp
@@ -399,7 +399,7 @@
                         ((*it)->getLogId() != LOG_ID_KERNEL))) {
         mLogElements.push_back(elem);
     } else {
-        log_time end = log_time::EPOCH;
+        log_time end(log_time::EPOCH);
         bool end_set = false;
         bool end_always = false;
 
diff --git a/logd/LogKlog.cpp b/logd/LogKlog.cpp
index 513c0c3..edd326a 100644
--- a/logd/LogKlog.cpp
+++ b/logd/LogKlog.cpp
@@ -197,10 +197,9 @@
     // NOTREACHED
 }
 
-log_time LogKlog::correction =
-    (log_time(CLOCK_REALTIME) < log_time(CLOCK_MONOTONIC))
-        ? log_time::EPOCH
-        : (log_time(CLOCK_REALTIME) - log_time(CLOCK_MONOTONIC));
+log_time LogKlog::correction = (log_time(CLOCK_REALTIME) < log_time(CLOCK_MONOTONIC))
+                                       ? log_time(log_time::EPOCH)
+                                       : (log_time(CLOCK_REALTIME) - log_time(CLOCK_MONOTONIC));
 
 LogKlog::LogKlog(LogBuffer* buf, LogReader* reader, int fdWrite, int fdRead,
                  bool auditd)
@@ -268,7 +267,7 @@
     static const char real_format[] = "%Y-%m-%d %H:%M:%S.%09q UTC";
     if (len < (ssize_t)(strlen(real_format) + 5)) return;
 
-    log_time real;
+    log_time real(log_time::EPOCH);
     const char* ep = real.strptime(real_string, real_format);
     if (!ep || (ep > &real_string[len]) || (real > log_time(CLOCK_REALTIME))) {
         return;
@@ -282,20 +281,20 @@
     tm.tm_isdst = -1;
     localtime_r(&now, &tm);
     if ((tm.tm_gmtoff < 0) && ((-tm.tm_gmtoff) > (long)real.tv_sec)) {
-        real = log_time::EPOCH;
+        real = log_time(log_time::EPOCH);
     } else {
         real.tv_sec += tm.tm_gmtoff;
     }
     if (monotonic > real) {
-        correction = log_time::EPOCH;
+        correction = log_time(log_time::EPOCH);
     } else {
         correction = real - monotonic;
     }
 }
 
-void LogKlog::sniffTime(log_time& now, const char*& buf, ssize_t len,
-                        bool reverse) {
-    if (len <= 0) return;
+log_time LogKlog::sniffTime(const char*& buf, ssize_t len, bool reverse) {
+    log_time now(log_time::EPOCH);
+    if (len <= 0) return now;
 
     const char* cp = nullptr;
     if ((len > 10) && (*buf == '[')) {
@@ -310,7 +309,7 @@
         }
         buf = cp;
 
-        if (isMonotonic()) return;
+        if (isMonotonic()) return now;
 
         const char* b;
         if (((b = android::strnstr(cp, len, suspendStr))) &&
@@ -329,11 +328,11 @@
             //     trigger a check for ntp-induced or hardware clock drift.
             log_time real(CLOCK_REALTIME);
             log_time mono(CLOCK_MONOTONIC);
-            correction = (real < mono) ? log_time::EPOCH : (real - mono);
+            correction = (real < mono) ? log_time(log_time::EPOCH) : (real - mono);
         } else if (((b = android::strnstr(cp, len, suspendedStr))) &&
                    (((b += strlen(suspendStr)) - cp) < len)) {
             len -= b - cp;
-            log_time real;
+            log_time real(log_time::EPOCH);
             char* endp;
             real.tv_sec = strtol(b, &endp, 10);
             if ((*endp == '.') && ((endp - b) < len)) {
@@ -345,7 +344,7 @@
                 }
                 if (reverse) {
                     if (real > correction) {
-                        correction = log_time::EPOCH;
+                        correction = log_time(log_time::EPOCH);
                     } else {
                         correction -= real;
                     }
@@ -363,6 +362,7 @@
             now = log_time(CLOCK_REALTIME);
         }
     }
+    return now;
 }
 
 pid_t LogKlog::sniffPid(const char*& buf, ssize_t len) {
@@ -451,8 +451,7 @@
     }
     parseKernelPrio(cp, len - (cp - buf));
 
-    log_time now;
-    sniffTime(now, cp, len - (cp - buf), true);
+    log_time now = sniffTime(cp, len - (cp - buf), true);
 
     const char* suspended = android::strnstr(buf, len, suspendedStr);
     if (!suspended || (suspended > cp)) {
@@ -468,7 +467,7 @@
     }
     parseKernelPrio(cp, len - (cp - buf));
 
-    sniffTime(now, cp, len - (cp - buf), true);
+    sniffTime(cp, len - (cp - buf), true);
 }
 
 // Convert kernel log priority number into an Android Logger priority number
@@ -548,8 +547,7 @@
     const char* p = buf;
     int pri = parseKernelPrio(p, len);
 
-    log_time now;
-    sniffTime(now, p, len - (p - buf), false);
+    log_time now = sniffTime(p, len - (p - buf), false);
 
     // sniff for start marker
     const char* start = android::strnstr(p, len - (p - buf), klogdStr);
diff --git a/logd/LogKlog.h b/logd/LogKlog.h
index bb92dd2..6bfd6a8 100644
--- a/logd/LogKlog.h
+++ b/logd/LogKlog.h
@@ -55,11 +55,10 @@
     }
 
    protected:
-    void sniffTime(log_time& now, const char*& buf, ssize_t len, bool reverse);
-    pid_t sniffPid(const char*& buf, ssize_t len);
-    void calculateCorrection(const log_time& monotonic, const char* real_string,
-                             ssize_t len);
-    virtual bool onDataAvailable(SocketClient* cli);
+     log_time sniffTime(const char*& buf, ssize_t len, bool reverse);
+     pid_t sniffPid(const char*& buf, ssize_t len);
+     void calculateCorrection(const log_time& monotonic, const char* real_string, ssize_t len);
+     virtual bool onDataAvailable(SocketClient* cli);
 };
 
 #endif
diff --git a/logd/LogTags.cpp b/logd/LogTags.cpp
index 1ab9dd1..f19e7b0 100644
--- a/logd/LogTags.cpp
+++ b/logd/LogTags.cpp
@@ -30,6 +30,7 @@
 
 #include <android-base/file.h>
 #include <android-base/macros.h>
+#include <android-base/scopeguard.h>
 #include <android-base/stringprintf.h>
 #include <log/log_event_list.h>
 #include <log/log_properties.h>
@@ -38,6 +39,8 @@
 #include "LogTags.h"
 #include "LogUtils.h"
 
+using android::base::make_scope_guard;
+
 static LogTags* logtags;
 
 const char LogTags::system_event_log_tags[] = "/system/etc/event-log-tags";
@@ -316,27 +319,29 @@
         std::string Format;
         android_log_list_element elem;
         {
-            android_log_event_list ctx(log_msg);
-            elem = ctx.read();
+            auto ctx = create_android_log_parser(log_msg.msg() + sizeof(uint32_t),
+                                                 log_msg.entry.len - sizeof(uint32_t));
+            auto guard = make_scope_guard([&ctx]() { android_log_destroy(&ctx); });
+            elem = android_log_read_next(ctx);
             if (elem.type != EVENT_TYPE_LIST) {
                 continue;
             }
-            elem = ctx.read();
+            elem = android_log_read_next(ctx);
             if (elem.type != EVENT_TYPE_INT) {
                 continue;
             }
             Tag = elem.data.int32;
-            elem = ctx.read();
+            elem = android_log_read_next(ctx);
             if (elem.type != EVENT_TYPE_STRING) {
                 continue;
             }
             Name = std::string(elem.data.string, elem.len);
-            elem = ctx.read();
+            elem = android_log_read_next(ctx);
             if (elem.type != EVENT_TYPE_STRING) {
                 continue;
             }
             Format = std::string(elem.data.string, elem.len);
-            elem = ctx.read();
+            elem = android_log_read_next(ctx);
         }
         if ((elem.type != EVENT_TYPE_LIST_STOP) || !elem.complete) continue;
 
@@ -524,10 +529,22 @@
     tag2format_const_iterator iform = tag2format.find(tag);
     std::string Format = (iform != tag2format.end()) ? iform->second : "";
 
-    __android_log_event_list ctx(TAG_DEF_LOG_TAG);
-    ctx << tag << Name << Format;
-    std::string buffer(ctx);
-    if (buffer.length() <= 0) return;  // unlikely
+    auto ctx = create_android_logger(TAG_DEF_LOG_TAG);
+    auto guard = make_scope_guard([&ctx]() { android_log_destroy(&ctx); });
+    if (android_log_write_int32(ctx, static_cast<int32_t>(tag) < 0) ||
+        android_log_write_string8_len(ctx, Name.c_str(), Name.size()) < 0 ||
+        android_log_write_string8_len(ctx, Format.c_str(), Format.size()) < 0) {
+        return;
+    }
+
+    const char* cp = nullptr;
+    ssize_t len = android_log_write_list_buffer(ctx, &cp);
+
+    if (len <= 0 || cp == nullptr) {
+        return;
+    }
+
+    std::string buffer(cp, len);
 
     /*
      *  struct {
diff --git a/rootdir/init.rc b/rootdir/init.rc
index b34399d..9b20964 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -346,12 +346,6 @@
     trigger boot
 
 on post-fs
-    # Load properties from
-    #     /system/build.prop,
-    #     /odm/build.prop,
-    #     /vendor/build.prop and
-    #     /factory/factory.prop
-    load_system_props
     start vold
     exec - system system -- /system/bin/vdc checkpoint markBootAttempt
 
diff --git a/storaged/storaged.cpp b/storaged/storaged.cpp
index 77c6167..6897663 100644
--- a/storaged/storaged.cpp
+++ b/storaged/storaged.cpp
@@ -341,20 +341,14 @@
     if (mConfig.event_time_check_usec &&
         clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &start_ts) < 0) {
         check_time = false;
-        static time_t state_a;
-        IF_ALOG_RATELIMIT_LOCAL(300, &state_a) {
-            PLOG_TO(SYSTEM, ERROR) << "clock_gettime() failed";
-        }
+        PLOG_TO(SYSTEM, ERROR) << "clock_gettime() failed";
     }
 
     event();
 
     if (mConfig.event_time_check_usec && check_time) {
         if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &end_ts) < 0) {
-            static time_t state_b;
-            IF_ALOG_RATELIMIT_LOCAL(300, &state_b) {
-                PLOG_TO(SYSTEM, ERROR) << "clock_gettime() failed";
-            }
+            PLOG_TO(SYSTEM, ERROR) << "clock_gettime() failed";
             return;
         }
         int64_t cost = (end_ts.tv_sec - start_ts.tv_sec) * SEC_TO_USEC +
diff --git a/toolbox/getevent.c b/toolbox/getevent.c
index 39033ad..e2c77c3 100644
--- a/toolbox/getevent.c
+++ b/toolbox/getevent.c
@@ -530,6 +530,9 @@
     const char *device = NULL;
     const char *device_path = "/dev/input";
 
+    /* disable buffering on stdout */
+    setbuf(stdout, NULL);
+
     opterr = 0;
     do {
         c = getopt(argc, argv, "tns:Sv::dpilqc:rh");