QueryPerformance.h

[詳解]

// ----------------------------------------------------------------------------
 
#pragma once
 
#include "WindowsLibrary.h"
 
namespace alt
{
    class DLL_DECLSPEC QueryPerformance : public WindowsLibrary
    {
    public:
        APIENTRY QueryPerformance ();
 
        APIENTRY ~QueryPerformance () {};
 
        VOID APIENTRY Start ();
 
        VOID APIENTRY Stop ();
 
        double APIENTRY PastTime () const;
 
        LARGE_INTEGER APIENTRY GetStartTick () const { return _startTick; };
 
        LARGE_INTEGER APIENTRY GetStopTick () const { return _stopTick; };
 
        LARGE_INTEGER APIENTRY GetFrequency () const { return _frequency; };
 
    private:
        LARGE_INTEGER _startTick;
 
        LARGE_INTEGER _stopTick;
 
        LARGE_INTEGER _frequency;
    };
}