#include "pthread_impl.h" | |
int pthread_rwlock_timedwrlock(pthread_rwlock_t *rw, const struct timespec *at) | |
{ | |
int nr, *p, w=0; | |
while (pthread_rwlock_trywrlock(rw)==EAGAIN) { | |
if (!w) a_inc(&rw->__waiters), w++; | |
if ((nr=rw->__readers)) p = &rw->__readers; | |
else nr=1, p = &rw->__wrlock; | |
if (__timedwait(p, nr, CLOCK_REALTIME, at, 0)==ETIMEDOUT) { | |
if (w) a_dec(&rw->__waiters); | |
return ETIMEDOUT; | |
} | |
} | |
if (w) a_dec(&rw->__waiters); | |
return 0; | |
} |