Cpu表现出正弦曲线

 1 #include <windows.h>
 2 #include <math.h>
 3 int main(void)
 4 {
 5          SetThreadAffinityMask(GetCurrentProcess(), 0x00000001);
 6     const double SPLIT=0.01;
 7     const int COUNT=200;
 8     const double PI=3.14159265;
 9     const int INTERVAL=300;
10     DWORD busySpan[COUNT]; //array of busy time
11     DWORD idleSpan[COUNT]; //array of idle time
12     int half=INTERVAL/2;
13     double radian=0.0;
14     for(int i=0;i<COUNT;i++)
15     {
16         busySpan[i]=(DWORD)(half+(sin(PI*radian)*half));
17         idleSpan[i]=INTERVAL-busySpan[i];
18         radian+=SPLIT;
19     }
20     DWORD startTime=0;
21     int j=0;
22     while(true)
23     {
24         j=j%COUNT;
25         startTime=GetTickCount();
26         while((GetTickCount()-startTime)<=busySpan[j])
27             ;
28         Sleep(idleSpan[j]);
29         j++;
30     }
31     return 0;
32 }
参考：http://www.cnblogs.com/Ripper-Y/archive/2012/05/19/2508511.html