diff options
| -rw-r--r-- | src/include/timer.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/include/timer.h b/src/include/timer.h index b37cea45da..b034da2306 100644 --- a/src/include/timer.h +++ b/src/include/timer.h @@ -175,4 +175,64 @@ static inline long mono_time_diff_microseconds(const struct mono_time *t1, return rela_time_in_microseconds(&rt); } +struct stopwatch { + struct mono_time start; + struct mono_time current; + struct mono_time expires; +}; + +static inline void stopwatch_init(struct stopwatch *sw) +{ + timer_monotonic_get(&sw->start); + sw->current = sw->expires = sw->start; +} + +static inline void stopwatch_init_usecs_expire(struct stopwatch *sw, long us) +{ + stopwatch_init(sw); + mono_time_add_usecs(&sw->expires, us); +} + +static inline void stopwatch_init_msecs_expire(struct stopwatch *sw, long ms) +{ + stopwatch_init_usecs_expire(sw, USECS_PER_MSEC * ms); +} + +/* + * Tick the stopwatch to collect the current time. + */ +static inline void stopwatch_tick(struct stopwatch *sw) +{ + timer_monotonic_get(&sw->current); +} + +/* + * Tick and check the stopwatch for expiration. Returns non-zero on exipration. + */ +static inline int stopwatch_expired(struct stopwatch *sw) +{ + stopwatch_tick(sw); + return !mono_time_before(&sw->current, &sw->expires); +} + +/* + * Return number of microseconds since starting the stopwatch. + */ +static inline long stopwatch_duration_usecs(struct stopwatch *sw) +{ + /* + * If the stopwatch hasn't been ticked (current == start) tick + * the stopwatch to gather the accumulated time. + */ + if (!mono_time_cmp(&sw->start, &sw->current)) + stopwatch_tick(sw); + + return mono_time_diff_microseconds(&sw->start, &sw->current); +} + +static inline long stopwatch_duration_msecs(struct stopwatch *sw) +{ + return stopwatch_duration_usecs(sw) / USECS_PER_MSEC; +} + #endif /* TIMER_H */ |