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Side by Side Diff: base/synchronization/condition_variable.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 // ConditionVariable wraps pthreads condition variable synchronization or, on 5 // ConditionVariable wraps pthreads condition variable synchronization or, on
6 // Windows, simulates it. This functionality is very helpful for having 6 // Windows, simulates it. This functionality is very helpful for having
7 // several threads wait for an event, as is common with a thread pool managed 7 // several threads wait for an event, as is common with a thread pool managed
8 // by a master. The meaning of such an event in the (worker) thread pool 8 // by a master. The meaning of such an event in the (worker) thread pool
9 // scenario is that additional tasks are now available for processing. It is 9 // scenario is that additional tasks are now available for processing. It is
10 // used in Chrome in the DNS prefetching system to notify worker threads that 10 // used in Chrome in the DNS prefetching system to notify worker threads that
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67 #pragma once 67 #pragma once
68 68
69 #include "build/build_config.h" 69 #include "build/build_config.h"
70 70
71 #if defined(OS_WIN) 71 #if defined(OS_WIN)
72 #include <windows.h> 72 #include <windows.h>
73 #elif defined(OS_POSIX) 73 #elif defined(OS_POSIX)
74 #include <pthread.h> 74 #include <pthread.h>
75 #endif 75 #endif
76 76
77 #include "base/base_api.h" 77 #include "base/base_export.h"
78 #include "base/basictypes.h" 78 #include "base/basictypes.h"
79 #include "base/synchronization/lock.h" 79 #include "base/synchronization/lock.h"
80 80
81 namespace base { 81 namespace base {
82 82
83 class TimeDelta; 83 class TimeDelta;
84 84
85 class BASE_API ConditionVariable { 85 class BASE_EXPORT ConditionVariable {
86 public: 86 public:
87 // Construct a cv for use with ONLY one user lock. 87 // Construct a cv for use with ONLY one user lock.
88 explicit ConditionVariable(Lock* user_lock); 88 explicit ConditionVariable(Lock* user_lock);
89 89
90 ~ConditionVariable(); 90 ~ConditionVariable();
91 91
92 // Wait() releases the caller's critical section atomically as it starts to 92 // Wait() releases the caller's critical section atomically as it starts to
93 // sleep, and the reacquires it when it is signaled. 93 // sleep, and the reacquires it when it is signaled.
94 void Wait(); 94 void Wait();
95 void TimedWait(const TimeDelta& max_time); 95 void TimedWait(const TimeDelta& max_time);
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181 #endif 181 #endif
182 182
183 #endif 183 #endif
184 184
185 DISALLOW_COPY_AND_ASSIGN(ConditionVariable); 185 DISALLOW_COPY_AND_ASSIGN(ConditionVariable);
186 }; 186 };
187 187
188 } // namespace base 188 } // namespace base
189 189
190 #endif // BASE_SYNCHRONIZATION_CONDITION_VARIABLE_H_ 190 #endif // BASE_SYNCHRONIZATION_CONDITION_VARIABLE_H_
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