问如何实现内存和CPU功能的使用？

EN

#include "stdafx.h"
#include <math.h>
#include <windows.h>

void fun()
{
  long sum = 0L;
  for (long long i = 1; i < 10000000; i++){
        sum += log((double)i);
    }
 }

double cputimer()
{
    FILETIME createTime;
    FILETIME exitTime;
    FILETIME kernelTime;
    FILETIME userTime;


    if ( GetProcessTimes( GetCurrentProcess( ),
        &createTime, &exitTime, &kernelTime, &userTime ) != -1 )
    {
        SYSTEMTIME userSystemTime;
        if ( FileTimeToSystemTime( &userTime, &userSystemTime ) != -1 )
            return (double)userSystemTime.wHour * 3600.0 +
            (double)userSystemTime.wMinute * 60.0 +
            (double)userSystemTime.wSecond +
            (double)userSystemTime.wMilliseconds / 1000.0;
    }

}

int _tmain(int argc, _TCHAR* argv[])
{
    double start, stop;

    start = cputimer();
    fun();
    stop = cputimer();


    printf("Time taken: %f [seconds]\n", stop - start);

    return 0;
}