PerformanceDataHelper.h

[詳解]

// ----------------------------------------------------------------------------
 
#pragma once
 
#include <Pdh.h>
#include "WindowsLibrary.h"
#include "TString.h"
#include "Array.hpp"
 
namespace alt
{
    class DLL_DECLSPEC PerformanceDataItem : public WindowsLibrary
    {
    public:
        APIENTRY PerformanceDataItem (HQUERY hQuery, TString key);
 
        APIENTRY ~PerformanceDataItem ();
 
        bool APIENTRY AddCounter ();
 
        TString& APIENTRY GetKey ();
 
        bool APIENTRY GetValue (DWORD dwFormat, PDH_FMT_COUNTERVALUE& value);
 
    private:
        PerformanceDataItem () = delete;
 
        HQUERY _hQuery;
        HCOUNTER _hCounter;
        TString _counterPath;
    };
 
    class DLL_DECLSPEC PerformanceDataHelper : public WindowsLibrary
    {
    public:
        APIENTRY PerformanceDataHelper ();
 
        APIENTRY ~PerformanceDataHelper ();
 
        bool APIENTRY Open ();
 
        bool APIENTRY Close ();
 
        PerformanceDataItem& APIENTRY CreateItem (TString key);
 
        bool APIENTRY Query ();
 
    private:
        HQUERY _hQuery;
    };
}