michael@0: /*
michael@0:  * Copyright 2012 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #include "SkCondVar.h"
michael@0: 
michael@0: SkCondVar::SkCondVar() {
michael@0: #ifdef SK_USE_POSIX_THREADS
michael@0:     pthread_mutex_init(&fMutex, NULL /* default mutex attr */);
michael@0:     pthread_cond_init(&fCond, NULL /* default cond attr */);
michael@0: #elif defined(SK_BUILD_FOR_WIN32)
michael@0:     InitializeCriticalSection(&fCriticalSection);
michael@0:     InitializeConditionVariable(&fCondition);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: SkCondVar::~SkCondVar() {
michael@0: #ifdef SK_USE_POSIX_THREADS
michael@0:     pthread_mutex_destroy(&fMutex);
michael@0:     pthread_cond_destroy(&fCond);
michael@0: #elif defined(SK_BUILD_FOR_WIN32)
michael@0:     DeleteCriticalSection(&fCriticalSection);
michael@0:     // No need to clean up fCondition.
michael@0: #endif
michael@0: }
michael@0: 
michael@0: void SkCondVar::lock() {
michael@0: #ifdef SK_USE_POSIX_THREADS
michael@0:     pthread_mutex_lock(&fMutex);
michael@0: #elif defined(SK_BUILD_FOR_WIN32)
michael@0:     EnterCriticalSection(&fCriticalSection);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: void SkCondVar::unlock() {
michael@0: #ifdef SK_USE_POSIX_THREADS
michael@0:     pthread_mutex_unlock(&fMutex);
michael@0: #elif defined(SK_BUILD_FOR_WIN32)
michael@0:     LeaveCriticalSection(&fCriticalSection);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: void SkCondVar::wait() {
michael@0: #ifdef SK_USE_POSIX_THREADS
michael@0:     pthread_cond_wait(&fCond, &fMutex);
michael@0: #elif defined(SK_BUILD_FOR_WIN32)
michael@0:     SleepConditionVariableCS(&fCondition, &fCriticalSection, INFINITE);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: void SkCondVar::signal() {
michael@0: #ifdef SK_USE_POSIX_THREADS
michael@0:     pthread_cond_signal(&fCond);
michael@0: #elif defined(SK_BUILD_FOR_WIN32)
michael@0:     WakeConditionVariable(&fCondition);
michael@0: #endif
michael@0: }
michael@0: 
michael@0: void SkCondVar::broadcast() {
michael@0: #ifdef SK_USE_POSIX_THREADS
michael@0:     pthread_cond_broadcast(&fCond);
michael@0: #elif defined(SK_BUILD_FOR_WIN32)
michael@0:     WakeAllConditionVariable(&fCondition);
michael@0: #endif
michael@0: }