int
_pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
{
struct pthread *curthread = _get_curthread();
pthread_rwlock_t prwlock;
int ret;
int32_t state;
if (*rwlock == THR_PSHARED_PTR) {
prwlock = __thr_pshared_offpage(rwlock, 0);
if (prwlock == NULL)
return (EINVAL);
} else {
prwlock = *rwlock;
}
if (__predict_false(prwlock <= THR_RWLOCK_DESTROYED))
return (EINVAL);
state = prwlock->lock.rw_state;
if (state & URWLOCK_WRITE_OWNER) {
if (__predict_false(prwlock->owner != TID(curthread)))
return (EPERM);
prwlock->owner = 0;
}
ret = _thr_rwlock_unlock(&prwlock->lock);
if (ret == 0 && (state & URWLOCK_WRITE_OWNER) == 0)
curthread->rdlock_count--;
return (ret);
}
static void
_thr_rtld_lock_release(void *lock)
{
pthread_rwlock_t prwlock;
prwlock = (pthread_rwlock_t)lock;
_thr_rwlock_unlock(&prwlock);
}
