Function childproc_jobstate

freebsd/kern/kern_sig.c:3343–3367

}

static void
childproc_jobstate(struct proc *p, int reason, int sig)
{
	struct sigacts *ps;

	PROC_LOCK_ASSERT(p, MA_OWNED);
	PROC_LOCK_ASSERT(p->p_pptr, MA_OWNED);

	/*
	 * Wake up parent sleeping in kern_wait(), also send
	 * SIGCHLD to parent, but SIGCHLD does not guarantee
	 * that parent will awake, because parent may masked
	 * the signal.
	 */
	p->p_pptr->p_flag |= P_STATCHILD;
	wakeup(p->p_pptr);

	ps = p->p_pptr->p_sigacts;
	mtx_lock(&ps->ps_mtx);
	if ((ps->ps_flag & PS_NOCLDSTOP) == 0) {
		mtx_unlock(&ps->ps_mtx);
		sigparent(p, reason, sig);
	} else
		mtx_unlock(&ps->ps_mtx);
}

void
childproc_stopped(struct proc *p, int reason)