TQ_FLAGS_ACTIVE
queue->tq_flags |= TQ_FLAGS_ACTIVE;
queue->tq_flags &= ~TQ_FLAGS_ACTIVE;
if ((queue->tq_flags & TQ_FLAGS_ACTIVE) == 0)
while ((tq->tq_flags & TQ_FLAGS_ACTIVE) != 0) {
if ((tq->tq_flags & TQ_FLAGS_ACTIVE) == 0)
queue->tq_flags |= TQ_FLAGS_ACTIVE;
queue->tq_flags &= ~TQ_FLAGS_ACTIVE;