AuroraRuntime/Include/Aurora/Time/TimerHighRes.hpp

/***
    Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: TimerHighRes.hpp
    Date: 2021-6-10
    Author: Reece
***/
#pragma once

namespace Aurora::Time
{
    class TimerHighRes
    {
    public:
        TimerHighRes()
        {
            Start();
        }

        void Start()
        {
            start_ = CurrentInternalClockNS();
        }

        AuUInt64 End()
        {
            auto re = std::clamp<AuInt64>(CurrentInternalClockNS() - start_, AuInt64(0), AuNumericLimits<AuInt64>::max());
            if (re == AuNumericLimits<AuInt64>::max()) return 0; // ez overflow in subtract. get out of here in 2-3 branches
            return re;
        }

    private:
        AuUInt64 start_;
    };
}