Symbol: KQ_ASYNC
sys/kern/kern_event.c
2339
kq->kq_state |= KQ_ASYNC;
sys/kern/kern_event.c
2341
kq->kq_state &= ~KQ_ASYNC;
sys/kern/kern_event.c
2549
if ((kq->kq_state & KQ_ASYNC) == KQ_ASYNC) {