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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 GTEST_PPAPI_THREAD_CONDITION_H_ | 5 #ifndef GTEST_PPAPI_THREAD_CONDITION_H_ |
| 6 #define GTEST_PPAPI_THREAD_CONDITION_H_ | 6 #define GTEST_PPAPI_THREAD_CONDITION_H_ |
| 7 | 7 |
| 8 #include <pthread.h> | 8 #include <pthread.h> |
| 9 | 9 |
| 10 struct timespec; | 10 struct timespec; |
| (...skipping 23 matching lines...) Expand all Loading... |
| 34 void Unlock() { | 34 void Unlock() { |
| 35 pthread_mutex_unlock(&cond_mutex_); | 35 pthread_mutex_unlock(&cond_mutex_); |
| 36 } | 36 } |
| 37 | 37 |
| 38 // Signal the condition. This will cause Wait() to return. | 38 // Signal the condition. This will cause Wait() to return. |
| 39 void Signal() { | 39 void Signal() { |
| 40 pthread_cond_broadcast(&condition_); | 40 pthread_cond_broadcast(&condition_); |
| 41 } | 41 } |
| 42 | 42 |
| 43 // Wait for a Signal(). Note that this can spuriously return, so you should | 43 // Wait for a Signal(). Note that this can spuriously return, so you should |
| 44 // have a guard bool to see if the condtion is really true. E.g., in the | 44 // have a guard bool to see if the condition is really true. E.g., in the |
| 45 // calling thread: | 45 // calling thread: |
| 46 // cond_lock->Lock(); | 46 // cond_lock->Lock(); |
| 47 // cond_true = true; | 47 // cond_true = true; |
| 48 // cond_lock->Signal(); | 48 // cond_lock->Signal(); |
| 49 // cond_lock->Unlock(); | 49 // cond_lock->Unlock(); |
| 50 // In the worker thread: | 50 // In the worker thread: |
| 51 // cond_lock->Lock(); | 51 // cond_lock->Lock(); |
| 52 // while (!cond_true) { | 52 // while (!cond_true) { |
| 53 // cond_lock->Wait(); | 53 // cond_lock->Wait(); |
| 54 // } | 54 // } |
| 55 // cond_lock->Unlock(); | 55 // cond_lock->Unlock(); |
| 56 void Wait() { | 56 void Wait() { |
| 57 pthread_cond_wait(&condition_, &cond_mutex_); | 57 pthread_cond_wait(&condition_, &cond_mutex_); |
| 58 } | 58 } |
| 59 | 59 |
| 60 private: | 60 private: |
| 61 pthread_mutex_t cond_mutex_; | 61 pthread_mutex_t cond_mutex_; |
| 62 pthread_cond_t condition_; | 62 pthread_cond_t condition_; |
| 63 }; | 63 }; |
| 64 | 64 |
| 65 #endif // GTEST_PPAPI_THREAD_CONDITION_H_ | 65 #endif // GTEST_PPAPI_THREAD_CONDITION_H_ |
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