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Side by Side Diff: base/synchronization/waitable_event.h

Issue 7461141: Rename BASE_API to BASE_EXPORT. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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_H_ 5 #ifndef BASE_SYNCHRONIZATION_WAITABLE_EVENT_H_
6 #define BASE_SYNCHRONIZATION_WAITABLE_EVENT_H_ 6 #define BASE_SYNCHRONIZATION_WAITABLE_EVENT_H_
7 #pragma once 7 #pragma once
8 8
9 #include "base/base_api.h" 9 #include "base/base_export.h"
10 #include "base/basictypes.h" 10 #include "base/basictypes.h"
11 11
12 #if defined(OS_WIN) 12 #if defined(OS_WIN)
13 #include <windows.h> 13 #include <windows.h>
14 #endif 14 #endif
15 15
16 #if defined(OS_POSIX) 16 #if defined(OS_POSIX)
17 #include <list> 17 #include <list>
18 #include <utility> 18 #include <utility>
19 #include "base/memory/ref_counted.h" 19 #include "base/memory/ref_counted.h"
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35 // Use a WaitableEvent when you would otherwise use a Lock+ConditionVariable to 35 // Use a WaitableEvent when you would otherwise use a Lock+ConditionVariable to
36 // protect a simple boolean value. However, if you find yourself using a 36 // protect a simple boolean value. However, if you find yourself using a
37 // WaitableEvent in conjunction with a Lock to wait for a more complex state 37 // WaitableEvent in conjunction with a Lock to wait for a more complex state
38 // change (e.g., for an item to be added to a queue), then you should probably 38 // change (e.g., for an item to be added to a queue), then you should probably
39 // be using a ConditionVariable instead of a WaitableEvent. 39 // be using a ConditionVariable instead of a WaitableEvent.
40 // 40 //
41 // NOTE: On Windows, this class provides a subset of the functionality afforded 41 // NOTE: On Windows, this class provides a subset of the functionality afforded
42 // by a Windows event object. This is intentional. If you are writing Windows 42 // by a Windows event object. This is intentional. If you are writing Windows
43 // specific code and you need other features of a Windows event, then you might 43 // specific code and you need other features of a Windows event, then you might
44 // be better off just using an Windows event directly. 44 // be better off just using an Windows event directly.
45 class BASE_API WaitableEvent { 45 class BASE_EXPORT WaitableEvent {
46 public: 46 public:
47 // If manual_reset is true, then to set the event state to non-signaled, a 47 // If manual_reset is true, then to set the event state to non-signaled, a
48 // consumer must call the Reset method. If this parameter is false, then the 48 // consumer must call the Reset method. If this parameter is false, then the
49 // system automatically resets the event state to non-signaled after a single 49 // system automatically resets the event state to non-signaled after a single
50 // waiting thread has been released. 50 // waiting thread has been released.
51 WaitableEvent(bool manual_reset, bool initially_signaled); 51 WaitableEvent(bool manual_reset, bool initially_signaled);
52 52
53 #if defined(OS_WIN) 53 #if defined(OS_WIN)
54 // Create a WaitableEvent from an Event HANDLE which has already been 54 // Create a WaitableEvent from an Event HANDLE which has already been
55 // created. This objects takes ownership of the HANDLE and will close it when 55 // created. This objects takes ownership of the HANDLE and will close it when
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172 172
173 scoped_refptr<WaitableEventKernel> kernel_; 173 scoped_refptr<WaitableEventKernel> kernel_;
174 #endif 174 #endif
175 175
176 DISALLOW_COPY_AND_ASSIGN(WaitableEvent); 176 DISALLOW_COPY_AND_ASSIGN(WaitableEvent);
177 }; 177 };
178 178
179 } // namespace base 179 } // namespace base
180 180
181 #endif // BASE_SYNCHRONIZATION_WAITABLE_EVENT_H_ 181 #endif // BASE_SYNCHRONIZATION_WAITABLE_EVENT_H_
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