diff options
Diffstat (limited to 'src/threading/event.h')
-rw-r--r-- | src/threading/event.h | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/src/threading/event.h b/src/threading/event.h index 0105630e5..ea087e53f 100644 --- a/src/threading/event.h +++ b/src/threading/event.h @@ -26,30 +26,42 @@ DEALINGS IN THE SOFTWARE. #ifndef THREADING_EVENT_H #define THREADING_EVENT_H -#ifdef _WIN32 - #include <windows.h> +#if __cplusplus >= 201103L + #include <condition_variable> + #include "threading/mutex.h" +#elif defined(_WIN32) + #include <windef.h> #else - #include "threading/semaphore.h" + #include <pthread.h> #endif +/** A syncronization primitive that will wake up one waiting thread when signaled. + * Calling @c signal() multiple times before a waiting thread has had a chance + * to notice the signal will wake only one thread. Additionally, if no threads + * are waiting on the event when it is signaled, the next call to @c wait() + * will return (almost) immediately. + */ class Event { public: -#ifdef _WIN32 - Event() { event = CreateEvent(NULL, false, false, NULL); } - ~Event() { CloseHandle(event); } - void wait() { WaitForSingleObject(event, INFINITE); } - void signal() { SetEvent(event); } -#else - void wait() { sem.wait(); } - void signal() { sem.post(); } +#if __cplusplus < 201103L + Event(); + ~Event(); #endif + void wait(); + void signal(); private: -#ifdef _WIN32 +#if __cplusplus >= 201103L + std::condition_variable cv; + Mutex mutex; + bool notified; +#elif defined(_WIN32) HANDLE event; #else - Semaphore sem; + pthread_cond_t cv; + pthread_mutex_t mutex; + bool notified; #endif }; |