// highPrecisionTimeNow returns high precision time for benchmarking.
func highPrecisionTimeNow() highPrecisionTime {
	var t highPrecisionTime
	// This should always succeed for Windows XP and above.
	t.now = windows.QueryPerformanceCounter()
	return t
}

func (a highPrecisionTime) sub(b highPrecisionTime) time.Duration {
	delta := a.now - b.now

	if queryPerformanceFrequency == 0 {