prepares
array_verify (EV_A_ (W *)prepares, preparecnt);
queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
prepares [preparecnt - 1] = w;
prepares [active - 1] = prepares [--preparecnt];
ev_active (prepares [active - 1]) = active;
if (ev_cb (prepares [i]) != embed_prepare_cb)
cb (EV_A_ EV_PREPARE, prepares [i]);
VARx(struct ev_prepare **, prepares)
#define prepares ((loop)->prepares)