Implement SkCondVar for windows.
Only works on Vista or later, since it uses condition variables.
Review URL: https://codereview.appspot.com/6812062
git-svn-id: http://skia.googlecode.com/svn/trunk@6225 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/utils/SkCondVar.cpp b/src/utils/SkCondVar.cpp
index 8cbab58..5d001c0 100644
--- a/src/utils/SkCondVar.cpp
+++ b/src/utils/SkCondVar.cpp
@@ -8,31 +8,61 @@
#include "SkCondVar.h"
SkCondVar::SkCondVar() {
+#ifdef SK_USE_POSIX_THREADS
pthread_mutex_init(&fMutex, NULL /* default mutex attr */);
pthread_cond_init(&fCond, NULL /* default cond attr */);
+#elif defined(SK_BUILD_FOR_WIN32)
+ InitializeCriticalSection(&fCriticalSection);
+ InitializeConditionVariable(&fCondition);
+#endif
}
SkCondVar::~SkCondVar() {
+#ifdef SK_USE_POSIX_THREADS
pthread_mutex_destroy(&fMutex);
pthread_cond_destroy(&fCond);
+#elif defined(SK_BUILD_FOR_WIN32)
+ DeleteCriticalSection(&fCriticalSection);
+ // No need to clean up fCondition.
+#endif
}
void SkCondVar::lock() {
+#ifdef SK_USE_POSIX_THREADS
pthread_mutex_lock(&fMutex);
+#elif defined(SK_BUILD_FOR_WIN32)
+ EnterCriticalSection(&fCriticalSection);
+#endif
}
void SkCondVar::unlock() {
+#ifdef SK_USE_POSIX_THREADS
pthread_mutex_unlock(&fMutex);
+#elif defined(SK_BUILD_FOR_WIN32)
+ LeaveCriticalSection(&fCriticalSection);
+#endif
}
void SkCondVar::wait() {
+#ifdef SK_USE_POSIX_THREADS
pthread_cond_wait(&fCond, &fMutex);
+#elif defined(SK_BUILD_FOR_WIN32)
+ SleepConditionVariableCS(&fCondition, &fCriticalSection, INFINITE);
+#endif
}
void SkCondVar::signal() {
+#ifdef SK_USE_POSIX_THREADS
pthread_cond_signal(&fCond);
+#elif defined(SK_BUILD_FOR_WIN32)
+ WakeConditionVariable(&fCondition);
+#endif
}
void SkCondVar::broadcast() {
+#ifdef SK_USE_POSIX_THREADS
pthread_cond_broadcast(&fCond);
+#elif defined(SK_BUILD_FOR_WIN32)
+ WakeAllConditionVariable(&fCondition);
+#endif
}