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Adjust invalid tv_nsec values after adding.

This commit is contained in:
Patrick Mahoney 2011-12-17 10:05:35 -06:00
parent 7230e9f2c9
commit ee939d407c
1 changed files with 6 additions and 0 deletions
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6
ext/libpsem/psem_posix.c
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@ -118,6 +118,7 @@ psem_trywait(psem_t *psem, error_t **err)
#define NS_PER_S (1000 * 1000 * 1000)
#define US_PER_NS (1000)
#define TV_NSEC_MAX (NS_PER_S - 1)
int
psem_timedwait(psem_t *psem, float timeout_s, error_t **err)
@ -139,6 +140,11 @@ psem_timedwait(psem_t *psem, float timeout_s, error_t **err)
abs_timeout.tv_sec += sec;
abs_timeout.tv_nsec += nsec;
while (abs_timeout.tv_nsec > TV_NSEC_MAX) {
abs_timeout.tv_sec += 1;
abs_timeout.tv_nsec -= NS_PER_S;
}
}
errcheck(sem_timedwait(psem->sem, &abs_timeout), err);