1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/android/java_handler_thread.h" 6 7 #include <jni.h> 8 9 #include "base/android/jni_android.h" 10 #include "base/android/jni_string.h" 11 #include "base/message_loop/message_loop.h" 12 #include "base/synchronization/waitable_event.h" 13 #include "base/threading/thread_restrictions.h" 14 #include "jni/JavaHandlerThread_jni.h" 15 16 namespace base { 17 18 namespace android { 19 20 JavaHandlerThread::JavaHandlerThread(const char* name) { 21 JNIEnv* env = base::android::AttachCurrentThread(); 22 23 java_thread_.Reset(Java_JavaHandlerThread_create( 24 env, ConvertUTF8ToJavaString(env, name).Release())); 25 } 26 27 JavaHandlerThread::~JavaHandlerThread() { 28 } 29 30 void JavaHandlerThread::Start() { 31 // Check the thread has not already been started. 32 DCHECK(!message_loop_); 33 34 JNIEnv* env = base::android::AttachCurrentThread(); 35 base::WaitableEvent initialize_event(false, false); 36 Java_JavaHandlerThread_start(env, 37 java_thread_.obj(), 38 reinterpret_cast<intptr_t>(this), 39 reinterpret_cast<intptr_t>(&initialize_event)); 40 // Wait for thread to be initialized so it is ready to be used when Start 41 // returns. 42 base::ThreadRestrictions::ScopedAllowWait wait_allowed; 43 initialize_event.Wait(); 44 } 45 46 void JavaHandlerThread::Stop() { 47 } 48 49 void JavaHandlerThread::InitializeThread(JNIEnv* env, jobject obj, 50 jlong event) { 51 // TYPE_JAVA to get the Android java style message loop. 52 message_loop_.reset(new base::MessageLoop(base::MessageLoop::TYPE_JAVA)); 53 static_cast<MessageLoopForUI*>(message_loop_.get())->Start(); 54 reinterpret_cast<base::WaitableEvent*>(event)->Signal(); 55 } 56 57 // static 58 bool JavaHandlerThread::RegisterBindings(JNIEnv* env) { 59 return RegisterNativesImpl(env); 60 } 61 62 } // namespace android 63 } // namespace base 64
