sigqueue_delete
sigqueue_delete(sigqueue, sig);
sigqueue_delete(sigqueue, sig);
sigqueue_delete(sigqueue, sig);
sigqueue_delete(&p->p_sigqueue, sig);
sigqueue_delete(&td->td_sigqueue, sig);
sigqueue_delete(&td->td_sigqueue, sig);
sigqueue_delete(&p->p_sigqueue, sig);
sigqueue_delete(&td->td_sigqueue, sig);
sigqueue_delete(&p->p_sigqueue, sig);
sigqueue_delete(&td3->td_sigqueue,
sigqueue_delete(&p->p_sigqueue, SIGSTOP);
void sigqueue_delete(struct sigqueue *queue, int sig);