diff options
| -rw-r--r-- | libavutil/thread.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libavutil/thread.h b/libavutil/thread.h index 297b5b9a52..3d1573775c 100644 --- a/libavutil/thread.h +++ b/libavutil/thread.h @@ -43,6 +43,11 @@ #define ff_mutex_unlock pthread_mutex_unlock #define ff_mutex_destroy pthread_mutex_destroy +#define AVOnce pthread_once_t +#define AV_ONCE_INIT PTHREAD_ONCE_INIT + +#define ff_thread_once(control, routine) pthread_once(control, routine) + #else #define USE_ATOMICS 1 @@ -54,6 +59,18 @@ #define ff_mutex_unlock(mutex) (0) #define ff_mutex_destroy(mutex) (0) +#define AVOnce char +#define AV_ONCE_INIT 0 + +static inline int ff_thread_once(char *control, void (*routine)(void)) +{ + if (!*control) { + routine(); + *control = 1; + } + return 0; +} + #endif #endif /* AVUTIL_THREAD_H */ |