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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 BASE_SYNCHRONIZATION_WAITABLE_EVENT_WATCHER_H_ | 5 #ifndef BASE_SYNCHRONIZATION_WAITABLE_EVENT_WATCHER_H_ |
6 #define BASE_SYNCHRONIZATION_WAITABLE_EVENT_WATCHER_H_ | 6 #define BASE_SYNCHRONIZATION_WAITABLE_EVENT_WATCHER_H_ |
7 | 7 |
8 #include "base/base_export.h" | 8 #include "base/base_export.h" |
9 #include "base/macros.h" | 9 #include "base/macros.h" |
10 #include "base/sequence_checker.h" | 10 #include "base/sequence_checker.h" |
11 #include "build/build_config.h" | 11 #include "build/build_config.h" |
12 | 12 |
13 #if defined(OS_WIN) | 13 #if defined(OS_WIN) |
14 #include "base/win/object_watcher.h" | 14 #include "base/win/object_watcher.h" |
15 #else | 15 #else |
16 #include "base/callback.h" | 16 #include "base/callback.h" |
17 #include "base/synchronization/waitable_event.h" | 17 #include "base/synchronization/waitable_event.h" |
18 #endif | 18 #endif |
19 | 19 |
20 namespace base { | 20 namespace base { |
21 | 21 |
22 class Flag; | 22 class Flag; |
23 class AsyncWaiter; | 23 class AsyncWaiter; |
24 class AsyncCallbackTask; | |
25 class WaitableEvent; | 24 class WaitableEvent; |
26 | 25 |
27 // This class provides a way to wait on a WaitableEvent asynchronously. | 26 // This class provides a way to wait on a WaitableEvent asynchronously. |
28 // | 27 // |
29 // Each instance of this object can be waiting on a single WaitableEvent. When | 28 // Each instance of this object can be waiting on a single WaitableEvent. When |
30 // the waitable event is signaled, a callback is invoked on the sequence that | 29 // the waitable event is signaled, a callback is invoked on the sequence that |
31 // called StartWatching(). This callback can be deleted by deleting the waiter. | 30 // called StartWatching(). This callback can be deleted by deleting the waiter. |
32 // | 31 // |
33 // Typical usage: | 32 // Typical usage: |
34 // | 33 // |
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109 // sequence. | 108 // sequence. |
110 SequenceChecker sequence_checker_; | 109 SequenceChecker sequence_checker_; |
111 #endif | 110 #endif |
112 | 111 |
113 DISALLOW_COPY_AND_ASSIGN(WaitableEventWatcher); | 112 DISALLOW_COPY_AND_ASSIGN(WaitableEventWatcher); |
114 }; | 113 }; |
115 | 114 |
116 } // namespace base | 115 } // namespace base |
117 | 116 |
118 #endif // BASE_SYNCHRONIZATION_WAITABLE_EVENT_WATCHER_H_ | 117 #endif // BASE_SYNCHRONIZATION_WAITABLE_EVENT_WATCHER_H_ |
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