void evtimer_start (struct ev_timer *w);
void evtimer_stop (struct ev_timer *w);
+void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
void evperiodic_start (struct ev_periodic *w);
void evperiodic_stop (struct ev_periodic *w);