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Lines Matching refs:rw

151 rwlock_init(rwlock_t *rw)
154 	mutex_init(&rw->rw_lock, MUTEX_DEFAULT, IPL_VM);
155 	rw->rw_nreaders = 0;
159 rwlock_destroy(rwlock_t *rw)
162 	KASSERTMSG(rw->rw_nreaders == 0,
163 	    "rwlock still held by %u readers", rw->rw_nreaders);
164 	mutex_destroy(&rw->rw_lock);
168 write_lock_irq(rwlock_t *rw)
172 		mutex_spin_enter(&rw->rw_lock);
173 		if (rw->rw_nreaders == 0)
175 		mutex_spin_exit(&rw->rw_lock);
180 write_unlock_irq(rwlock_t *rw)
183 	KASSERT(rw->rw_nreaders == 0);
184 	mutex_spin_exit(&rw->rw_lock);
188 read_lock(rwlock_t *rw)
191 	mutex_spin_enter(&rw->rw_lock);
192 	KASSERT(rw->rw_nreaders < UINT_MAX);
193 	rw->rw_nreaders++;
194 	mutex_spin_exit(&rw->rw_lock);
198 read_unlock(rwlock_t *rw)
201 	mutex_spin_enter(&rw->rw_lock);
202 	KASSERT(0 < rw->rw_nreaders);
203 	rw->rw_nreaders--;
204 	mutex_spin_exit(&rw->rw_lock);