ffmpeg | branch: master | KO Myung-Hun <kom...@gmail.com> | Thu Nov 12 12:31:51 2015 +0900| [6248f23859eb610079b1964e5f081ff0e9c62281] | committer: Michael Niedermayer
os2threads: Add pthread_once() Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6248f23859eb610079b1964e5f081ff0e9c62281 --- compat/os2threads.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/compat/os2threads.h b/compat/os2threads.h index 5b6ca55..f8fb2c8 100644 --- a/compat/os2threads.h +++ b/compat/os2threads.h @@ -32,6 +32,8 @@ #undef __STRICT_ANSI__ /* for _beginthread() */ #include <stdlib.h> +#include <sys/fmutex.h> + #include "libavutil/mem.h" typedef TID pthread_t; @@ -47,6 +49,13 @@ typedef struct { typedef void pthread_condattr_t; +typedef struct { + volatile int done; + _fmutex mtx; +} pthread_once_t; + +#define PTHREAD_ONCE_INIT {0, _FMUTEX_INITIALIZER} + struct thread_arg { void *(*start_routine)(void *); void *arg; @@ -163,4 +172,22 @@ static av_always_inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mute return 0; } +static av_always_inline int pthread_once(pthread_once_t *once_control, void (*init_routine)(void)) +{ + if (!once_control->done) + { + _fmutex_request(&once_control->mtx, 0); + + if (!once_control->done) + { + init_routine(); + + once_control->done = 1; + } + + _fmutex_release(&once_control->mtx); + } + + return 0; +} #endif /* AVCODEC_OS2PTHREADS_H */ _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
