cpucount.cpp

来自「编译类_Hss VC版_源代码支持表达式的编译执行,速度超快,支持实数和复数,并」· C++ 代码 · 共 30 行

#include "stdafx.h"

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

#include "CPUCount.h"

__int64 CPUCycleCounter()//获取当前CPU周期计数(CPU周期数)
{
	__asm
	{
		RDTSC         //eax,edx
	}
}

int	QueryPerformanceCounter(__int64 &count)//获得高性能计数器的当前计数
{
	return  QueryPerformanceCounter((LARGE_INTEGER*)&count);
}

int	QueryPerformanceFrequency(__int64 &fq)//获得高性能计数器的频率
{
	return  QueryPerformanceFrequency((LARGE_INTEGER*)&fq);
}