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Visual C++

CpuUsage.h：源码内容

							// CpuUsage.h: interface for the CCpuUsage class.
//
//////////////////////////////////////////////////////////////////////
#if !defined(AFX_CPUUSAGE_H__60CF4F03_9F01_41E8_A9FB_51F065D5F3C2__INCLUDED_)
#define AFX_CPUUSAGE_H__60CF4F03_9F01_41E8_A9FB_51F065D5F3C2__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#pragma warning(disable : 4786) //debug info - name too long
#endif // _MSC_VER > 1000
#include <pdh.h>
#include <pdhmsg.h>
#pragma comment(lib,"PDH.lib")
#define MAX_RAW_VALUES          20
const char szCounterName[] = "\Processor(_Total)\% Processor Time";
typedef struct _tag_PDHCounterStruct {
    HCOUNTER hCounter;      // Handle to the counter - given to use by PDH Library
    int nNextIndex;         // element to get the next raw value
    int nOldestIndex;       // element containing the oldes raw value
    int nRawCount;          // number of elements containing raw values
    PDH_RAW_COUNTER a_RawValue[MAX_RAW_VALUES]; // Ring buffer to contain raw values
} PDHCOUNTERSTRUCT, *PPDHCOUNTERSTRUCT;
class CCpuUsage  
{
public:
	CCpuUsage();
	virtual ~CCpuUsage();
	BOOL	Init();
	int GetUsage();
protected:
	PPDHCOUNTERSTRUCT			m_pCounterStruct;
	HQUERY						m_hQuery;
};
#endif // !defined(AFX_CPUUSAGE_H__60CF4F03_9F01_41E8_A9FB_51F065D5F3C2__INCLUDED_)

						