event_active
event_active(ev, EV_TIMEOUT, 1);
void event_active(struct event *, int, short);
event_active(ev, which, events[i].data);
event_active(ev, which, 1);
event_active(r_ev, res & r_ev->ev_events, 1);
event_active(w_ev, res & w_ev->ev_events, 1);
event_active(r_ev, res & r_ev->ev_events, 1);
event_active(w_ev, res & w_ev->ev_events, 1);
event_active(ev, EV_SIGNAL, ncalls);
event_active(&cdata->timer, EV_TIMEOUT, 1);