VARx(int, backend)
VARx(int, activecnt) /* total number of active events ("refcount") */
-VARx(unsigned int, loop_count); /* total number of loop iterations/blocks */
+VARx(unsigned int, loop_count) /* total number of loop iterations/blocks */
VARx(int, backend_fd)
VARx(ev_tstamp, backend_fudge) /* assumed typical timer resolution */