+#if defined(_EVENT_HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC)
+ /** Difference between internal time (maybe from clock_gettime) and
+ * gettimeofday. */
+ struct timeval tv_clock_diff;
+ /** Second in which we last updated tv_clock_diff, in monotonic time. */
+ time_t last_updated_clock_diff;
+#endif
+