sleepq_wait_sig
error = -sleepq_wait_sig(c, 0);
ret = -sleepq_wait_sig(wchan, 0);
rval = sleepq_wait_sig(cvp, 0);
error = sleepq_wait_sig(&lk->lock_object, pri);
error = sleepq_wait_sig(&sx->lock_object, 0);
error = sleepq_wait_sig(&sx->lock_object, 0);
rval = sleepq_wait_sig(ident, pri);
ret = sleepq_wait_sig(wchan, prio);
int sleepq_wait_sig(const void *wchan, int pri);