#include "TimerCounter.h" 
#include <iostream> 
#include <windows.h>
using namespace std;

TimerCounter::TimerCounter(void) 
 { 
     QueryPerformanceFrequency(&freq);//获取主机CPU时钟频率
}
TimerCounter::~TimerCounter(void)
{
}
void TimerCounter::Start()
{
     QueryPerformanceCounter(&startCount);//开始计时
}
 void TimerCounter::Stop()
{
     QueryPerformanceCounter(&endCount);//停止计时
 
     dbTime=((double)endCount.QuadPart-(double)startCount.QuadPart)/(double)freq.QuadPart;//获取时间差
 
}