Function stopwatch_duration_usecs

src/include/timer.h:170–180

* Return number of microseconds since starting the stopwatch. */

 * Return number of microseconds since starting the stopwatch.
 */
static inline int64_t 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 int64_t stopwatch_duration_msecs(struct stopwatch *sw)
{