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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_ | 5 #ifndef REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_ |
6 #define REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_ | 6 #define REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 #include "base/callback.h" | 10 #include "base/callback.h" |
11 #include "base/macros.h" | 11 #include "base/macros.h" |
12 #include "base/message_loop/message_loop.h" | 12 #include "base/message_loop/message_loop.h" |
13 #include "base/single_thread_task_runner.h" | 13 #include "base/single_thread_task_runner.h" |
14 | 14 |
15 namespace remoting { | 15 namespace remoting { |
16 | 16 |
17 // A wrapper around |SingleThreadTaskRunner| that provides automatic lifetime | 17 // A wrapper around |SingleThreadTaskRunner| that provides automatic lifetime |
18 // management, by posting a caller-supplied task to the underlying task runner | 18 // management, by posting a caller-supplied task to the underlying task runner |
19 // when no more references remain. | 19 // when no more references remain. |
20 class AutoThreadTaskRunner : public base::SingleThreadTaskRunner { | 20 class AutoThreadTaskRunner : public base::SingleThreadTaskRunner { |
21 public: | 21 public: |
22 // Constructs an instance of |AutoThreadTaskRunner| wrapping |task_runner|. | 22 // Constructs an instance of |AutoThreadTaskRunner| wrapping |task_runner|. |
23 // |stop_task| is posted to |task_runner| when the last reference to | 23 // |stop_task| is posted to |task_runner| when the last reference to |
24 // the AutoThreadTaskRunner is dropped. | 24 // the AutoThreadTaskRunner is dropped. |
25 AutoThreadTaskRunner(scoped_refptr<base::SingleThreadTaskRunner> task_runner, | 25 AutoThreadTaskRunner(scoped_refptr<base::SingleThreadTaskRunner> task_runner, |
26 const base::Closure& stop_task); | 26 base::Closure stop_task); |
27 | 27 |
28 // SingleThreadTaskRunner implementation | 28 // SingleThreadTaskRunner implementation |
29 bool PostDelayedTask(const tracked_objects::Location& from_here, | 29 bool PostDelayedTask(const tracked_objects::Location& from_here, |
30 const base::Closure& task, | 30 base::Closure task, |
31 base::TimeDelta delay) override; | 31 base::TimeDelta delay) override; |
32 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here, | 32 bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here, |
33 const base::Closure& task, | 33 base::Closure task, |
34 base::TimeDelta delay) override; | 34 base::TimeDelta delay) override; |
35 bool RunsTasksOnCurrentThread() const override; | 35 bool RunsTasksOnCurrentThread() const override; |
36 | 36 |
37 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner() { | 37 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner() { |
38 return task_runner_; | 38 return task_runner_; |
39 } | 39 } |
40 | 40 |
41 private: | 41 private: |
42 ~AutoThreadTaskRunner() override; | 42 ~AutoThreadTaskRunner() override; |
43 | 43 |
44 // Task posted to |task_runner_| to notify the caller that it may be stopped. | 44 // Task posted to |task_runner_| to notify the caller that it may be stopped. |
45 base::Closure stop_task_; | 45 base::Closure stop_task_; |
46 | 46 |
47 // The wrapped task runner. | 47 // The wrapped task runner. |
48 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | 48 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
49 | 49 |
50 DISALLOW_COPY_AND_ASSIGN(AutoThreadTaskRunner); | 50 DISALLOW_COPY_AND_ASSIGN(AutoThreadTaskRunner); |
51 }; | 51 }; |
52 | 52 |
53 } // namespace remoting | 53 } // namespace remoting |
54 | 54 |
55 #endif // REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_ | 55 #endif // REMOTING_BASE_AUTO_THREAD_TASK_RUNNER_H_ |
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