1/* 2 * Copyright 2012 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8#include "SkCondVar.h" 9 10SkCondVar::SkCondVar() { 11#ifdef SK_USE_POSIX_THREADS 12 pthread_mutex_init(&fMutex, NULL /* default mutex attr */); 13 pthread_cond_init(&fCond, NULL /* default cond attr */); 14#elif defined(SK_BUILD_FOR_WIN32) 15 InitializeCriticalSection(&fCriticalSection); 16 InitializeConditionVariable(&fCondition); 17#endif 18} 19 20SkCondVar::~SkCondVar() { 21#ifdef SK_USE_POSIX_THREADS 22 pthread_mutex_destroy(&fMutex); 23 pthread_cond_destroy(&fCond); 24#elif defined(SK_BUILD_FOR_WIN32) 25 DeleteCriticalSection(&fCriticalSection); 26 // No need to clean up fCondition. 27#endif 28} 29 30void SkCondVar::lock() { 31#ifdef SK_USE_POSIX_THREADS 32 pthread_mutex_lock(&fMutex); 33#elif defined(SK_BUILD_FOR_WIN32) 34 EnterCriticalSection(&fCriticalSection); 35#endif 36} 37 38void SkCondVar::unlock() { 39#ifdef SK_USE_POSIX_THREADS 40 pthread_mutex_unlock(&fMutex); 41#elif defined(SK_BUILD_FOR_WIN32) 42 LeaveCriticalSection(&fCriticalSection); 43#endif 44} 45 46void SkCondVar::wait() { 47#ifdef SK_USE_POSIX_THREADS 48 pthread_cond_wait(&fCond, &fMutex); 49#elif defined(SK_BUILD_FOR_WIN32) 50 SleepConditionVariableCS(&fCondition, &fCriticalSection, INFINITE); 51#endif 52} 53 54void SkCondVar::signal() { 55#ifdef SK_USE_POSIX_THREADS 56 pthread_cond_signal(&fCond); 57#elif defined(SK_BUILD_FOR_WIN32) 58 WakeConditionVariable(&fCondition); 59#endif 60} 61 62void SkCondVar::broadcast() { 63#ifdef SK_USE_POSIX_THREADS 64 pthread_cond_broadcast(&fCond); 65#elif defined(SK_BUILD_FOR_WIN32) 66 WakeAllConditionVariable(&fCondition); 67#endif 68} 69