task_runners.h revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
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 MOJO_SHELL_TASK_RUNNERS_H_
6#define MOJO_SHELL_TASK_RUNNERS_H_
7
8#include "base/macros.h"
9#include "base/memory/ref_counted.h"
10#include "base/memory/scoped_ptr.h"
11#include "base/message_loop/message_loop_proxy.h"
12#include "base/threading/thread.h"
13
14namespace base {
15class SequencedWorkerPool;
16}
17
18namespace mojo {
19namespace shell {
20
21// A context object that contains the common task runners for the shell's main
22// process.
23class TaskRunners {
24 public:
25  explicit TaskRunners(
26      const scoped_refptr<base::SingleThreadTaskRunner>& shell_runner);
27  ~TaskRunners();
28
29  base::SingleThreadTaskRunner* shell_runner() const {
30    return shell_runner_.get();
31  }
32
33  base::SingleThreadTaskRunner* io_runner() const {
34    return io_thread_->message_loop_proxy().get();
35  }
36
37  base::SequencedWorkerPool* blocking_pool() const {
38    return blocking_pool_.get();
39  }
40
41 private:
42  scoped_refptr<base::SingleThreadTaskRunner> shell_runner_;
43  scoped_ptr<base::Thread> io_thread_;
44
45  scoped_refptr<base::SequencedWorkerPool> blocking_pool_;
46
47  DISALLOW_COPY_AND_ASSIGN(TaskRunners);
48};
49
50}  // namespace shell
51}  // namespace mojo
52
53#endif  // MOJO_SHELL_TASK_RUNNERS_H_
54