67 int __thr_rwlock_rdlock(struct urwlock *rwlock, int flags,
69 int __thr_rwlock_wrlock(struct urwlock *rwlock,
71 int __thr_rwlock_unlock(struct urwlock *rwlock) __hidden;
74 void _thr_rwl_rdlock(struct urwlock *rwlock) __hidden;
75 void _thr_rwl_wrlock(struct urwlock *rwlock) __hidden;
76 void _thr_rwl_unlock(struct urwlock *rwlock) __hidden;
184 _thr_rwlock_tryrdlock(struct urwlock *rwlock, int flags)  in _thr_rwlock_tryrdlock()  argument
189 	    (rwlock->rw_flags & URWLOCK_PREFER_READER) != 0)  in _thr_rwlock_tryrdlock()
193 	state = rwlock->rw_state;  in _thr_rwlock_tryrdlock()
198 		if (atomic_cmpset_acq_32(&rwlock->rw_state, state, state + 1))  in _thr_rwlock_tryrdlock()
200 		state = rwlock->rw_state;  in _thr_rwlock_tryrdlock()
207 _thr_rwlock_trywrlock(struct urwlock *rwlock)  in _thr_rwlock_trywrlock()  argument
211 	state = rwlock->rw_state;  in _thr_rwlock_trywrlock()
214 		if (atomic_cmpset_acq_32(&rwlock->rw_state, state,  in _thr_rwlock_trywrlock()
217 		state = rwlock->rw_state;  in _thr_rwlock_trywrlock()
224 _thr_rwlock_rdlock(struct urwlock *rwlock, int flags, struct timespec *tsp)  in _thr_rwlock_rdlock()  argument
227 	if (_thr_rwlock_tryrdlock(rwlock, flags) == 0)  in _thr_rwlock_rdlock()
229 	return (__thr_rwlock_rdlock(rwlock, flags, tsp));  in _thr_rwlock_rdlock()
233 _thr_rwlock_wrlock(struct urwlock *rwlock, struct timespec *tsp)  in _thr_rwlock_wrlock()  argument
236 	if (_thr_rwlock_trywrlock(rwlock) == 0)  in _thr_rwlock_wrlock()
238 	return (__thr_rwlock_wrlock(rwlock, tsp));  in _thr_rwlock_wrlock()
242 _thr_rwlock_unlock(struct urwlock *rwlock)  in _thr_rwlock_unlock()  argument
246 	state = rwlock->rw_state;  in _thr_rwlock_unlock()
248 		if (atomic_cmpset_rel_32(&rwlock->rw_state,  in _thr_rwlock_unlock()
258 				if (atomic_cmpset_rel_32(&rwlock->rw_state,  in _thr_rwlock_unlock()
261 				state = rwlock->rw_state;  in _thr_rwlock_unlock()
267     	return (__thr_rwlock_unlock(rwlock));  in _thr_rwlock_unlock()