blob: 19f699598ef4cfd55ff71b4ca1581df4d4d44aeb [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/android/java_handler_thread.h"
#include <jni.h>
#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/bind.h"
#include "base/run_loop.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/platform_thread_internal_posix.h"
#include "base/threading/thread_id_name_manager.h"
#include "base/threading/thread_restrictions.h"
#include "jni/JavaHandlerThread_jni.h"
using base::android::AttachCurrentThread;
namespace base {
namespace android {
JavaHandlerThread::JavaHandlerThread(const char* name,
base::ThreadPriority priority)
: JavaHandlerThread(
name,
Java_JavaHandlerThread_create(
AttachCurrentThread(),
ConvertUTF8ToJavaString(AttachCurrentThread(), name),
base::internal::ThreadPriorityToNiceValue(priority))) {}
JavaHandlerThread::JavaHandlerThread(
const char* name,
const base::android::ScopedJavaLocalRef<jobject>& obj)
: name_(name), java_thread_(obj) {}
JavaHandlerThread::~JavaHandlerThread() {
JNIEnv* env = base::android::AttachCurrentThread();
DCHECK(!Java_JavaHandlerThread_isAlive(env, java_thread_));
DCHECK(!message_loop_ || message_loop_->IsAborted());
// TODO(mthiesse): We shouldn't leak the MessageLoop as this could affect
// future tests.
if (message_loop_ && message_loop_->IsAborted()) {
// When the message loop has been aborted due to a crash, we intentionally
// leak the message loop because the message loop hasn't been shut down
// properly and would trigger DCHECKS. This should only happen in tests,
// where we handle the exception instead of letting it take down the
// process.
message_loop_.release();
}
}
void JavaHandlerThread::Start() {
// Check the thread has not already been started.
DCHECK(!message_loop_);
JNIEnv* env = base::android::AttachCurrentThread();
base::WaitableEvent initialize_event(
WaitableEvent::ResetPolicy::AUTOMATIC,
WaitableEvent::InitialState::NOT_SIGNALED);
Java_JavaHandlerThread_startAndInitialize(
env, java_thread_, reinterpret_cast<intptr_t>(this),
reinterpret_cast<intptr_t>(&initialize_event));
// Wait for thread to be initialized so it is ready to be used when Start
// returns.
base::ScopedAllowBaseSyncPrimitivesOutsideBlockingScope wait_allowed;
initialize_event.Wait();
}
void JavaHandlerThread::Stop() {
DCHECK(!task_runner()->BelongsToCurrentThread());
task_runner()->PostTask(
FROM_HERE,
base::BindOnce(&JavaHandlerThread::StopOnThread, base::Unretained(this)));
JNIEnv* env = base::android::AttachCurrentThread();
Java_JavaHandlerThread_joinThread(env, java_thread_);
}
void JavaHandlerThread::InitializeThread(JNIEnv* env,
const JavaParamRef<jobject>& obj,
jlong event) {
base::ThreadIdNameManager::GetInstance()->RegisterThread(
base::PlatformThread::CurrentHandle().platform_handle(),
base::PlatformThread::CurrentId());
if (name_)
PlatformThread::SetName(name_);
// TYPE_JAVA to get the Android java style message loop.
message_loop_ =
std::make_unique<MessageLoopForUI>(base::MessageLoop::TYPE_JAVA);
Init();
reinterpret_cast<base::WaitableEvent*>(event)->Signal();
}
void JavaHandlerThread::OnLooperStopped(JNIEnv* env,
const JavaParamRef<jobject>& obj) {
DCHECK(task_runner()->BelongsToCurrentThread());
message_loop_.reset();
CleanUp();
base::ThreadIdNameManager::GetInstance()->RemoveName(
base::PlatformThread::CurrentHandle().platform_handle(),
base::PlatformThread::CurrentId());
}
void JavaHandlerThread::StopMessageLoopForTesting() {
DCHECK(task_runner()->BelongsToCurrentThread());
StopOnThread();
}
void JavaHandlerThread::JoinForTesting() {
DCHECK(!task_runner()->BelongsToCurrentThread());
JNIEnv* env = base::android::AttachCurrentThread();
Java_JavaHandlerThread_joinThread(env, java_thread_);
}
void JavaHandlerThread::ListenForUncaughtExceptionsForTesting() {
DCHECK(!task_runner()->BelongsToCurrentThread());
JNIEnv* env = base::android::AttachCurrentThread();
Java_JavaHandlerThread_listenForUncaughtExceptionsForTesting(env,
java_thread_);
}
ScopedJavaLocalRef<jthrowable> JavaHandlerThread::GetUncaughtExceptionIfAny() {
DCHECK(!task_runner()->BelongsToCurrentThread());
JNIEnv* env = base::android::AttachCurrentThread();
return Java_JavaHandlerThread_getUncaughtExceptionIfAny(env, java_thread_);
}
void JavaHandlerThread::StopOnThread() {
DCHECK(task_runner()->BelongsToCurrentThread());
message_loop_->QuitWhenIdle(base::BindOnce(
&JavaHandlerThread::QuitThreadSafely, base::Unretained(this)));
}
void JavaHandlerThread::QuitThreadSafely() {
DCHECK(task_runner()->BelongsToCurrentThread());
JNIEnv* env = base::android::AttachCurrentThread();
Java_JavaHandlerThread_quitThreadSafely(env, java_thread_,
reinterpret_cast<intptr_t>(this));
}
} // namespace android
} // namespace base