Conversion of C++ code from Linux to Windows

Question

I am new to C++ , I have a program in C++ written for Linux. I\'m trying to convert it to Windows. The code I have is:

struct Timer 
{  
    struct tms t[2];
            


        

Answer 1

This is (an untested, but logically correct) drop in replacement. The usertime function returns in second resolution (as a double) so you need to divide by the required resolution.

struct Timer
{
   __int64 t[2];

   void Start()
   {
      QueryPerformanceCounter((LARGE_INTEGER*)&t[0]);
   }

   void Stop()
   {
      QueryPerformanceCounter((LARGE_INTEGER*)&t[1]);
   }

   double usertime()
   {
      __int64 freq;
      QueryPerformanceFrequency((LARGE_INTEGER*)&freq);
      return (double(t[1] - t[0])) / freq;
   }
};