elapsetime.cpp

来自「DSP图像处理程序源码」· C++ 代码 · 共 23 行

#include "stdafx.h"
#include "elapsetime.h"
unsigned __int64 GetCycleCount(void){

              __asm _emit 0x0F;

              __asm _emit 0x31;

}
static unsigned long TimeOfBegine;
static unsigned long TimeOfEnd;
static double TimeOfElapse;
void CycleCountStart(void){
		
		TimeOfBegine = (unsigned long) GetCycleCount();
}
void CycleCountEnd (void){
		TimeOfEnd=(unsigned long) GetCycleCount();
}
double CycleCountElapse(void){
		TimeOfElapse=(TimeOfEnd-TimeOfBegine)/1000000.0;  //ms
		return TimeOfElapse;
}