How does C + + get the memory occupied by the current process? "Go"

Using the SDK's Psapi (Process Status Helper)
In the
BOOL
Getprocessmemoryinfo (
HANDLE Process,
  
Pprocess_memory_counters Ppsmemcounters,
  
DWORD CB
);

typedef
struct _process_memory_counters {
DWORD CB;
DWORD Pagefaultcount;
  
size_t PeakWorkingSetSize;
Peak Memory usage
size_t WorkingSetSize;
Memory usage
size_t Quotapeakpagedpoolusage;
  
size_t QuotaPagedPoolUsage;
  
size_t QuotaPeakNonPagedPoolUsage;
  
size_t Quotanonpagedpoolusage;
  
size_t PageFileUsage;
Virtual Memory usage
size_t PeakPageFileUsage;
Peak Virtual Memory usage
} process_memory_counters,
*pprocess_memory_counters;

#include <iostream>
#include <windows.h>
#include <psapi.h>
#pragma comment (lib, "PSAPI.lib")
using namespace Std;
void Showmemoryinfo (void)
{
HANDLE handle=getcurrentprocess ();
Process_memory_counters PMC;
Getprocessmemoryinfo (handle,&pmc,sizeof (PMC));
cout<< "Memory usage:" &LT;&LT;PMC. workingsetsize/1000 << "k/" &LT;&LT;PMC. peakworkingsetsize/1000<< "K +" &LT;&LT;PMC. pagefileusage/1000 << "k/" &LT;&LT;PMC. peakpagefileusage/1000 << "K" <<endl;
}
int main (int argc,char* argv)
{
Showmemoryinfo ();
cout<< "Reclaim all recyclable Memory" <<endl;
Emptyworkingset (GetCurrentProcess ());
Showmemoryinfo ();
cout<< "Start allocating memory dynamically" <<endl;
char* Buf[5];
for (int i=0;i<sizeof (BUF)/sizeof (char*); i++)
{
Buf[i]=new char[102400];
Showmemoryinfo ();
}
cout<< "Start freeing Memory" <<endl;
for (int i=0;i<sizeof (BUF)/sizeof (char*); i++)
{
Delete Buf[i];
Buf[i]=null;
Showmemoryinfo ();
}
cout<< "Reclaim all recyclable Memory" <<endl;
Emptyworkingset (GetCurrentProcess ());
Showmemoryinfo ();
return 0;
}

Output:
Memory Usage: 1339k/1339k +
356k/356k
Reclaim All recyclable memory
Memory Usage: 114k/1425k +
356k/356k
Start allocating memory dynamically
Memory usage: 430k/1425k + 466k/466k
Memory Usage: 438k/1425k +
573k/573k
Memory usage: 446k/1425k + 679k/679k
Memory Usage: 454k/1425k +
786k/786k
Memory usage: 462k/1425k + 892k/892k
Start freeing memory
Memory Usage: 462k/1425k +
794k/892k
Memory usage: 454k/1425k + 692k/892k
Memory Usage: 446k/1425k +
589k/892k
Memory usage: 438k/1425k + 487k/892k
Memory Usage: 425k/1425k +
360k/892k
Reclaim All recyclable memory
Memory usage: 110k/1425k + 360k/892k

How does C + + get the memory occupied by the current process? "Go"