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