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