runtimer.cpp

数据库模拟程序 实现控制台命令词法分析

// RunTimer.cpp: implementation of the CRunTimer class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "database.h"
#include "RunTimer.h"

#include <winbase.h>
#pragma comment(lib, "kernel32")

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CRunTimer::CRunTimer()
{
	bIsRun = false;
	lStartCounter = 0;
	lEndCounter = 0;
}


CRunTimer::~CRunTimer()
{

}

bool CRunTimer::BeginTimer()
{
	QueryPerformanceCounter(&start);
	lStartCounter = start.QuadPart;
	bIsRun = true;
	return false;
}

bool CRunTimer::EndTimer()
{
	QueryPerformanceCounter(&end);
	lEndCounter = end.QuadPart;
	bIsRun = false;
	return false;
}

bool CRunTimer::isRunTimer()
{
	return bIsRun;
}

bool CRunTimer::GetTime()
{
	QueryPerformanceFrequency(&frequency);
	runtime = ((double)(lEndCounter - lStartCounter) / frequency.QuadPart);

	char *tmp;
	int point,sign;
	tmp = fcvt(runtime, 10, &point,&sign);
	
	CString msg;
	int m = 0;
	msg += "总共耗时 ";
	if(point >= 0)
	{
		while(m < point)
		{
			msg += tmp[m];
			m++;
		}
		msg += '.';
		m++;
		while( m < strlen(tmp))
		{
			msg += tmp[m];
			m++;
		}
	}
	else
	{
		msg += "0.";
		while(point < 0)
		{
			msg += "0";
			point++;
		}
		msg += tmp;
	}
	msg += " 秒";
	AfxMessageBox(msg);
	return runtime;
}