struct thread_data;
extern uint64_t utime_since(const struct timeval *,const struct timeval *);
extern uint64_t utime_since_now(const struct timeval *);
struct thread_data;
extern uint64_t utime_since(const struct timeval *,const struct timeval *);
extern uint64_t utime_since_now(const struct timeval *);
extern uint64_t usec_sleep(struct thread_data *, unsigned long);
extern void fill_start_time(struct timeval *);
extern void set_genesis_time(void);
extern uint64_t usec_sleep(struct thread_data *, unsigned long);
extern void fill_start_time(struct timeval *);
extern void set_genesis_time(void);