#define evtimer_set(ev, cb, arg) event_set(ev, -1, 0, cb, arg)
#define evtimer_add(ev, tv) event_add(ev, tv)
+#define evtimer_del(ev) event_del(ev)
#define signal_set(ev, sig, cb, arg) event_set(ev, sig, EV_SIGNAL | EV_PERSIST, cb, arg)
#define signal_add(ev, tv) event_add(ev, tv)
+#define signal_del(ev) event_del(ev)
/* random compat */
int event_once(int fd, short flags, uevent_cb_f cb_func, void *cb_arg, struct timeval *timeout);