-struct Time {
- void restart() { system_time(&t); }
- int64_t msec() const { return time_to_msec(t); }
- int elapsed() const { return int(current_time().msec() - msec()); }
-
- static Time current_time() { Time t; t.restart(); return t; }
-
-private:
- sys_time_t t;
-};