struct thread_data;
extern uint64_t ntime_since(const struct timespec *, const struct timespec *);
+extern uint64_t ntime_since_now(const struct timespec *);
extern uint64_t utime_since(const struct timespec *, const struct timespec *);
extern uint64_t utime_since_now(const struct timespec *);
extern uint64_t mtime_since(const struct timespec *, const struct timespec *);