EVFILT_PROC
ASSX(ke.filter == EVFILT_PROC);
EV_SET(&ke, pid, EVFILT_PROC, EV_ADD|EV_ENABLE|EV_CLEAR,
EV_SET(&ke, pid + (1ULL << 30), EVFILT_PROC, EV_ADD|EV_ENABLE|EV_CLEAR,
ASSX(ke.filter == EVFILT_PROC);
EV_SET(&event, child, EVFILT_PROC, EV_ADD|EV_ONESHOT, NOTE_EXIT, 0,