-VARx(ev_tstamp, rt_now)
-VARx(ev_tstamp, rtmn_diff) /* difference realtime - monotonic time */
-VARx(int, method)
-
-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, rtmn_diff) /* difference realtime - monotonic time */
+VARx(int, backend)
+VARx(int, activecnt) /* total number of active events ("refcount") */
+VARx(unsigned int, loop_count); /* total number of loop iterations/blocks */
+
+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)
+
+#if !defined(_WIN32) || EV_GENWRAP
+VARx(pid_t, curpid)
+#endif