mirror of
https://github.com/fluencelabs/musl
synced 2025-06-28 22:22:01 +00:00
19 lines
382 B
C
19 lines
382 B
C
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#include <semaphore.h>
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#include "pthread_impl.h"
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int sem_timedwait(sem_t *sem, const struct timespec *at)
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{
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int val;
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for (;;) {
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if (a_fetch_add(sem->__val, -1) > 0) return 0;
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val = a_fetch_add(sem->__val, 1);
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CANCELPT_BEGIN;
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if (val <= 0 && __timedwait(sem->__val, val, CLOCK_REALTIME, at, 0) == ETIMEDOUT) {
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errno = ETIMEDOUT;
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return -1;
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}
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CANCELPT_END;
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}
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}
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