+struct tm_msec *localtime_msec(long long int now, struct tm_msec *result);
+struct tm_msec *gmtime_msec(long long int now, struct tm_msec *result);
+size_t strftime_msec(char *s, size_t max, const char *format,
+ const struct tm_msec *);
+void xgettimeofday(struct timeval *);
+void xclock_gettime(clock_t, struct timespec *);
+
+int get_cpu_usage(void);
+
+long long int time_boot_msec(void);
+
+void timewarp_wait(void);
+