Method SpinWaitUntil

IntelPresentMon/CommonUtilities/Qpc.cpp:99–106

		return performanceCounterPeriod_;
	}
	double QpcTimer::SpinWaitUntil(double seconds) const noexcept
	{
		double t = Peek();
		for (; t < seconds; t = Peek()) {
			std::this_thread::yield();
		}
		return t - seconds;
	}
	int64_t QpcTimer::TimeToTimestamp(double seconds) const noexcept
	{
		return startTimestamp_ + int64_t(seconds / performanceCounterPeriod_);