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
JavaHandlerThread(const char * name)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
~JavaHandlerThread()27 JavaHandlerThread::~JavaHandlerThread() {
28 }
29
Start()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
Stop()46 void JavaHandlerThread::Stop() {
47 }
48
InitializeThread(JNIEnv * env,jobject obj,jlong event)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
RegisterBindings(JNIEnv * env)58 bool JavaHandlerThread::RegisterBindings(JNIEnv* env) {
59 return RegisterNativesImpl(env);
60 }
61
62 } // namespace android
63 } // namespace base
64