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| author | Rich Felker <dalias@aerifal.cx> | 2011-03-04 00:45:59 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-03-04 00:45:59 -0500 |
| commit | 6fc5fdbdc70dd17ea8e681a361fb4dae541ee953 (patch) | |
| tree | eee28ceddc2de85e528e50340e045a875e6a8e60 /src/thread/sem_post.c | |
| parent | 03dcc3417ce4388a652bdd053cb2b6af860daf00 (diff) | |
| download | musl-6fc5fdbdc70dd17ea8e681a361fb4dae541ee953.tar.gz | |
implement POSIX semaphores
Diffstat (limited to 'src/thread/sem_post.c')
| -rw-r--r-- | src/thread/sem_post.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/thread/sem_post.c b/src/thread/sem_post.c new file mode 100644 index 00000000..0bd8a462 --- /dev/null +++ b/src/thread/sem_post.c @@ -0,0 +1,9 @@ +#include <semaphore.h> +#include "pthread_impl.h" + +int sem_post(sem_t *sem) +{ + if (!a_fetch_add(sem->__val, 1)) + __wake(sem->__val, 1, 0); + return 0; +} |