git.sesse.net Git - casparcg/blob - test/timer.h

   1 #pragma once\r
   2 \r
   3 #include <windows.h>\r
   4 \r
   5 class timer\r
   6 {\r
   7 public:\r
   8         timer()\r
   9         {\r
  10                 QueryPerformanceFrequency(&freq_);\r
  11         }\r
  12 \r
  13         void start()\r
  14         {\r
  15                 QueryPerformanceCounter(&start_);\r
  16         }\r
  17 \r
  18         double time()\r
  19         {\r
  20                 LARGE_INTEGER time_;\r
  21                 QueryPerformanceCounter(&time_);\r
  22                 return static_cast<double>(time_.QuadPart - start_.QuadPart) / static_cast<double>(freq_.QuadPart);\r
  23         }\r
  24 \r
  25 private:\r
  26         LARGE_INTEGER freq_;\r
  27         LARGE_INTEGER start_;\r
  28 };