ev_cb
if (ev_cb (w))
if (ev_cb ((ev_io *)wl) == embed_io_cb)
if (ev_cb ((ev_io *)wl) == infy_cb)
if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
if (ev_cb (forks [i]) != embed_fork_cb)
if (ev_cb (prepares [i]) != embed_prepare_cb)