Algorithm - CPU Usage Curve (C++)

Bertha 。 2022-10-14 10:59 66阅读 0赞

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  1. /*
  2.  * CpuUsageCurve.h - by FreeMan
  3.  */
  5. #include "Windows.h"
  6. #include "math.h"
  7. #include "stdlib.h"
  9. const double SPLIT = 0.01;
  10. const int COUNT = 200;
  11. const double PI = 3.14159265;
  12. const int INTERVAL = 300;
  14. int main(int argc, TCHAR *argv[])
  15. {
  16.     SetThreadAffinityMask(GetCurrentThread(), 1);
  17.     DWORD busySpan[COUNT];  // Array of busy times
  18.     DWORD idleSpan[COUNT];  // Array of idle times
  19.     int half = INTERVAL / 2;
  20.     double radian = 0.0;
  21.     for (int i = 0; i < COUNT; i++)
  22.     {
  23.         busySpan[i] = (DWORD)(half + (sin(radian * PI) * half));
  24.         idleSpan[i] = INTERVAL - busySpan[i];
  25.         radian += SPLIT;
  26.     }
  27.     DWORD startTime = 0;
  28.     int j = 0;
  29.     while (true)
  30.     {
  31.         j = j % COUNT;
  32.         startTime = GetTickCount64();
  33.         while ((GetTickCount64() - startTime) <= busySpan[j])
  34.             ;
  35.         Sleep(idleSpan[j]);
  36.         j++;
  37.     }
  38.     return 0;
  39. }

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