DLL_EXPORT int ptt_pthread_mutex_unlock(LOCK *mutex, char *loc)
{
int result;
result = fthread_mutex_unlock(mutex);
PTTRACE ("unlock", mutex, NULL, loc, result);
return result;
}
int fthread_cond_wait(fthread_cond_t *cond, fthread_mutex_t *mutex) {
if (cond->__waitm) {
/* there should only be one mutex being used for concurrent
waits on a single condition variable */
if (cond->__waitm != mutex) {
return EINVAL;
}
} else {
cond->__waitm = mutex;
}
/* we also need to own the mutex */
int err = fthread_mutex_unlock(mutex);
if (err) {
return err;
}
/* can't destroy a mutex while it's being used in a cond_wait:
* have to up the use count so any calls to destroy will fail with
* EBUSY */
mutex->__usecount++;
cond->__usecount++;
sched_sleep_on(&cond->__waitq);
fthread_mutex_lock(mutex);
mutex->__usecount--;
cond->__usecount--;
return 0;
}