mirror of
https://github.com/fluencelabs/musl
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24 lines
405 B
C
24 lines
405 B
C
#include <semaphore.h>
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#include "pthread_impl.h"
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static void cleanup(void *p)
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{
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a_dec(p);
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}
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int sem_timedwait(sem_t *sem, const struct timespec *at)
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{
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while (sem_trywait(sem)) {
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int r;
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a_inc(sem->__val+1);
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a_cas(sem->__val, 0, -1);
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r = __timedwait(sem->__val, -1, CLOCK_REALTIME, at, cleanup, sem->__val+1, 0);
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a_dec(sem->__val+1);
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if (r) {
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errno = r;
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return -1;
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}
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}
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return 0;
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}
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