int pthread_rwlock_trywrlock(pthread_rwlock_t *rw)
{
if (a_xchg(&rw->_rw_wrlock, 1))
- return EAGAIN;
+ return EBUSY;
if (rw->_rw_readers) {
a_store(&rw->_rw_wrlock, 0);
- return EAGAIN;
+ return EBUSY;
}
rw->_rw_owner = pthread_self()->tid;
return 0;