Get memory usage of this process C++ Win32

Please point me to the easiest way to find out how much RAM current process is used.

Platform: Windows 10 Language: С++ Library: Win API

1. I know about HeapWalk/HeapSize but may be something more simple exists?
2. Calling the external process (wmi or tasklist) is very slow.

With win API GetProcessMemoryInfo you can obtain a process memory information,for example:

#include <windows.h>
#include <psapi.h>

#include <iostream>

int main(int argc, const char** argv)
{
    ::PROCESS_MEMORY_COUNTERS pmc;
    if ( ::GetProcessMemoryInfo( ::GetCurrentProcess(), &pmc, sizeof(pmc)) ) {
        std::cout << "Current process working set size " << (pmc.WorkingSetSize / 1024) << " KiB" << std::endl;
        std::cout << "Current process peak working set size " << (pmc.PeakWorkingSetSize / 1024) << " KiB" << std::endl;
    }

    return 0;
}

As well as you can profile your app without adding any additional code profiling with Visual Studio

And with Process Explorer you can obtains any system process detailed information.