Memory and CPU usage (using MinGW in x64 windows machine)

main.cpp

#include <iostream>
#include "windows.h"
//Memory Usage
#include "psapi.h"
//CPU Usage
#include "TCHAR.h"

//1- assuming we are monitoring Windows machine
//2- consider to use Performance Data Helper library which is much more intuitive

using namespace std;

int main()
{

    MEMORYSTATUSEX memInfo;
    memInfo.dwLength = sizeof(MEMORYSTATUSEX);
    GlobalMemoryStatusEx(&memInfo);
    DWORDLONG totalVirtualMem = memInfo.ullTotalPageFile;

    DWORDLONG virtualMemUsed = memInfo.ullTotalPageFile - memInfo.ullAvailPageFile;

    DWORDLONG totalPhysMem = memInfo.ullTotalPhys;
    DWORDLONG physMemUsed = memInfo.ullTotalPhys - memInfo.ullAvailPhys;

    cout << "Virtual Memory: " << totalVirtualMem / (1024*1024) << endl;
    cout << "Virtual Used Memory: " << virtualMemUsed / (1024*1024) << endl;
    cout << "Physical Memory: " << totalPhysMem / (1024*1024) << endl;
    cout << "Physical Memory Used: " << physMemUsed / (1024*1024) << endl;


    return 0;
}