+int time_poll(struct pollfd *, int n_pollfds, long long int timeout_when,
+ int *elapsed);
+
+long long int timespec_to_msec(const struct timespec *);
+long long int timeval_to_msec(const struct timeval *);
+
+void xgettimeofday(struct timeval *);
+
+int get_cpu_usage(void);
+
+long long int time_boot_msec(void);
+
+#ifdef __cplusplus
+}
+#endif