EV_DYNAMIC
ev->ev_flags |= EV_DYNAMIC;
ev->ev_flags |= flags & EV_DYNAMIC;
if (ev->ev_value != NULL && (ev->ev_flags & EV_DYNAMIC) != 0)
if (ev->ev_value != NULL && (ev->ev_flags & EV_DYNAMIC) != 0)
ev->ev_flags &= ~EV_DYNAMIC;