关于编程控制CPU使用率的笔记
日期：2022-08-22 栏目：程序人生 浏览：次
Code
#include "Windows.h"
#include "stdlib.h"
#include "math.h"
#include <tchar.h>
const double SPLIT = 0.01;
const int COUNT = 200;
const double PI = 3.14159265;
const int INTERVAL = 300;
int _tmain(int argc, _TCHAR* argv[])
{
DWORD busySpan[COUNT]; //array of busy times
DWORD idleSpan[COUNT]; //array of idle times
int half = INTERVAL / 2;
double radian = 0.0;
for(int i = 0; i < COUNT; i++)
{
busySpan[i] = (DWORD)(half + (sin(PI * radian) * half));
idleSpan[i] = INTERVAL - busySpan[i];
radian += SPLIT;
}
DWORD startTime = 0;
int j = 0;
while (true)
{
j = j % COUNT;
startTime = GetTickCount();
while ((GetTickCount() - startTime) <= busySpan[j]) ;
Sleep(idleSpan[j]);
j++;
}
return 0;
