Function sigqueue_take

freebsd/kern/kern_sig.c:351–375

}

void
sigqueue_take(ksiginfo_t *ksi)
{
	struct ksiginfo *kp;
	struct proc	*p;
	sigqueue_t	*sq;

	if (ksi == NULL || (sq = ksi->ksi_sigq) == NULL)
		return;

	p = sq->sq_proc;
	TAILQ_REMOVE(&sq->sq_list, ksi, ksi_link);
	ksi->ksi_sigq = NULL;
	if (!(ksi->ksi_flags & KSI_EXT) && p != NULL)
		p->p_pendingcnt--;

	for (kp = TAILQ_FIRST(&sq->sq_list); kp != NULL;
	     kp = TAILQ_NEXT(kp, ksi_link)) {
		if (kp->ksi_signo == ksi->ksi_signo)
			break;
	}
	if (kp == NULL && !SIGISMEMBER(sq->sq_kill, ksi->ksi_signo) &&
	    !SIGISMEMBER(sq->sq_ptrace, ksi->ksi_signo))
		SIGDELSET(sq->sq_signals, ksi->ksi_signo);
}

static int
sigqueue_add(sigqueue_t *sq, int signo, ksiginfo_t *si)