Merge "binder: Add an API to check if the threadpool has been started"
diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index 1f311ac..254dda8 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -439,6 +439,10 @@
return mCurrentThreads;
}
+bool ProcessState::isThreadPoolStarted() const {
+ return mThreadPoolStarted;
+}
+
#define DRIVER_FEATURES_PATH "/dev/binderfs/features/"
bool ProcessState::isDriverFeatureEnabled(const DriverFeature feature) {
static const char* const names[] = {
diff --git a/libs/binder/include/binder/ProcessState.h b/libs/binder/include/binder/ProcessState.h
index 87eee3d..bad8cb1 100644
--- a/libs/binder/include/binder/ProcessState.h
+++ b/libs/binder/include/binder/ProcessState.h
@@ -97,6 +97,11 @@
*/
size_t getThreadPoolMaxTotalThreadCount() const;
+ /**
+ * Check to see if the thread pool has started.
+ */
+ bool isThreadPoolStarted() const;
+
enum class DriverFeature {
ONEWAY_SPAM_DETECTION,
EXTENDED_ERROR,
diff --git a/libs/binder/ndk/include_platform/android/binder_process.h b/libs/binder/ndk/include_platform/android/binder_process.h
index 8923129..ffcad55 100644
--- a/libs/binder/ndk/include_platform/android/binder_process.h
+++ b/libs/binder/ndk/include_platform/android/binder_process.h
@@ -43,6 +43,13 @@
*/
bool ABinderProcess_setThreadPoolMaxThreadCount(uint32_t numThreads);
/**
+ * Check if the threadpool has already been started.
+ * This tells whether someone in the process has called ABinderProcess_startThreadPool. Usually,
+ * you should use this in a library to abort if the threadpool is not started.
+ * Programs should configure binder threadpools once at the beginning.
+ */
+bool ABinderProcess_isThreadPoolStarted();
+/**
* This adds the current thread to the threadpool. This may cause the threadpool to exceed the
* maximum size.
*
diff --git a/libs/binder/ndk/libbinder_ndk.map.txt b/libs/binder/ndk/libbinder_ndk.map.txt
index 5c7005c..54e4628 100644
--- a/libs/binder/ndk/libbinder_ndk.map.txt
+++ b/libs/binder/ndk/libbinder_ndk.map.txt
@@ -154,6 +154,7 @@
LIBBINDER_NDK34 { # introduced=UpsideDownCake
global:
+ ABinderProcess_isThreadPoolStarted; # systemapi llndk
AServiceManager_getUpdatableApexName; # systemapi
AServiceManager_registerForServiceNotifications; # systemapi llndk
AServiceManager_NotificationRegistration_delete; # systemapi llndk
diff --git a/libs/binder/ndk/process.cpp b/libs/binder/ndk/process.cpp
index ac582a4..bc6610e 100644
--- a/libs/binder/ndk/process.cpp
+++ b/libs/binder/ndk/process.cpp
@@ -31,6 +31,9 @@
bool ABinderProcess_setThreadPoolMaxThreadCount(uint32_t numThreads) {
return ProcessState::self()->setThreadPoolMaxThreadCount(numThreads) == 0;
}
+bool ABinderProcess_isThreadPoolStarted() {
+ return ProcessState::self()->isThreadPoolStarted();
+}
void ABinderProcess_joinThreadPool() {
IPCThreadState::self()->joinThreadPool();
}
diff --git a/libs/binder/tests/binderLibTest.cpp b/libs/binder/tests/binderLibTest.cpp
index 25b524f..f7498c4 100644
--- a/libs/binder/tests/binderLibTest.cpp
+++ b/libs/binder/tests/binderLibTest.cpp
@@ -120,6 +120,7 @@
BINDER_LIB_TEST_CAN_GET_SID,
BINDER_LIB_TEST_GET_MAX_THREAD_COUNT,
BINDER_LIB_TEST_SET_MAX_THREAD_COUNT,
+ BINDER_LIB_TEST_IS_THREADPOOL_STARTED,
BINDER_LIB_TEST_LOCK_UNLOCK,
BINDER_LIB_TEST_PROCESS_LOCK,
BINDER_LIB_TEST_UNLOCK_AFTER_MS,
@@ -1383,6 +1384,14 @@
EXPECT_EQ(replyi, kKernelThreads + 1);
}
+TEST_F(BinderLibTest, ThreadPoolStarted) {
+ Parcel data, reply;
+ sp<IBinder> server = addServer();
+ ASSERT_TRUE(server != nullptr);
+ EXPECT_THAT(server->transact(BINDER_LIB_TEST_IS_THREADPOOL_STARTED, data, &reply), NO_ERROR);
+ EXPECT_TRUE(reply.readBool());
+}
+
size_t epochMillis() {
using std::chrono::duration_cast;
using std::chrono::milliseconds;
@@ -1849,6 +1858,10 @@
reply->writeInt32(ProcessState::self()->getThreadPoolMaxTotalThreadCount());
return NO_ERROR;
}
+ case BINDER_LIB_TEST_IS_THREADPOOL_STARTED: {
+ reply->writeBool(ProcessState::self()->isThreadPoolStarted());
+ return NO_ERROR;
+ }
case BINDER_LIB_TEST_PROCESS_LOCK: {
m_blockMutex.lock();
return NO_ERROR;