-VARx(ev_tstamp, method_fudge) /* assumed typical timer resolution */
-VAR (method_modify, void (*method_modify)(EV_P_ int fd, int oev, int nev))
-VAR (method_poll , void (*method_poll)(EV_P_ ev_tstamp timeout))
+VARx(ev_tstamp, backend_fudge) /* assumed typical timer resolution */
+VAR (backend_modify, void (*backend_modify)(EV_P_ int fd, int oev, int nev))
+VAR (backend_poll , void (*backend_poll)(EV_P_ ev_tstamp timeout))
+VARx(int, backend_fd)