extern int timeval_add(struct timeval *result, struct timeval *x, struct timeval *y);
extern int timeval_add_time(struct timeval *result, int sec, int usec);
+typedef struct duration_s
+{
+ struct timeval start;
+ struct timeval duration;
+} duration_t;
+
+extern int duration_start_measure(duration_t *duration);
+extern int duration_stop_measure(duration_t *duration, char **text);
+
#endif /* TIME_SUPPORT_H */