Psignal
return (Psignal(P, (intptr_t)args, TRUE) < 0 ? -1 : 0);
(void) Psignal(t->t_pshandle, (intptr_t)sep->se_data, FALSE);
(void) Psignal(P, 0, FALSE);
extern int Psignal(struct ps_prochandle *, int, int);