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#ifndef BASE_THREADING_JAVA_THREAD_H_
6#define BASE_THREADING_JAVA_THREAD_H_
7
8#include <jni.h>
9
10#include "base/android/scoped_java_ref.h"
11#include "base/memory/scoped_ptr.h"
12
13namespace base {
14
15class MessageLoop;
16class WaitableEvent;
17
18namespace android {
19
20// A Java Thread with a native message loop. To run tasks, post them
21// to the message loop and they will be scheduled along with Java tasks
22// on the thread.
23// This is useful for callbacks where the receiver expects a thread
24// with a prepared Looper.
25class BASE_EXPORT JavaHandlerThread {
26 public:
27  JavaHandlerThread(const char* name);
28  virtual ~JavaHandlerThread();
29
30  base::MessageLoop* message_loop() const { return message_loop_.get(); }
31  void Start();
32  void Stop();
33
34  // Called from java on the newly created thread.
35  // Start() will not return before this methods has finished.
36  void InitializeThread(JNIEnv* env, jobject obj, jlong event);
37
38  static bool RegisterBindings(JNIEnv* env);
39
40 private:
41  scoped_ptr<base::MessageLoop> message_loop_;
42  ScopedJavaGlobalRef<jobject> java_thread_;
43};
44
45}  // namespace android
46}  // namespace base
47
48#endif  // BASE_THREADING_JAVA_THREAD_H_
49