perfobjectmanager.h

Visual C++.net编成指南一书的源代码

#pragma once

class CSamplePerformanceObject :
	public CPerfObject
{
public:
	//示新性能对象的类名、数字 ID（是任意的）、描述字符串和帮助字符串
	DECLARE_PERF_OBJECT(CSamplePerformanceObject, 1, _T("PerformanceCounterSample"), _T("PerformanceObjectHelpStr"), -1);
	//计数器
	BEGIN_COUNTER_MAP(CSamplePerformanceObject)
		//数据成员名、描述字符串、帮助字符串、计数器类型和小数位数（通常为 0）。
		DEFINE_COUNTER(rateCount, _T("rate"), _T("rate at which counter is increased"), PERF_COUNTER_COUNTER, 1)
		DEFINE_COUNTER(rawCount, _T("raw"), _T("raw counter value"), PERF_COUNTER_RAWCOUNT, 0)
	END_COUNTER_MAP()
	//数据成员
	ULONG rateCount;
	ULONG rawCount;
};

class CSamplePerformanceObjectManager :
	public CPerfMon
{
public:
//应用名
#define Perf_PerfObjMgr _T("Perf_PerformanceCounter")
	BEGIN_PERF_MAP(Perf_PerfObjMgr)
		//分配将由新的 CPerfMon 派生类管理的每个性能对象。
		CHAIN_PERF_OBJECT(CSamplePerformanceObject)
	END_PERF_MAP()
};
//注册新的性能对象管理器类
PERFREG_ENTRY(CSamplePerformanceObjectManager);