musl/src/thread/sem_post.c

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2011-03-04 00:45:59 -05:00
#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;
}