#include <windows.h>
#include <stdio.h>

#define PAGE 4096


void *virtualAlloc (long size) 
{
return VirtualAlloc (0, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
}


BOOL virtualFree (void *a) {
    return VirtualFree (a, 0, MEM_RELEASE);
}


void main ()
{
MEMORYSTATUS stat;

GlobalMemoryStatus (&stat);

printf (
	"Global Memory Status:\r\n"
	"Total Physical: %d bytes\tAvailable Physical: %d bytes\r\n"
	"Total PageFile: %d bytes\tAvailable PageFile: %d bytes\r\n"
	"Total Virtual : %d bytes\tAvailable Virtual : %d bytes\r\n",
	stat.dwTotalPhys, stat.dwAvailPhys,
	stat.dwTotalPageFile, stat.dwAvailPageFile,
	stat.dwTotalVirtual, stat.dwAvailVirtual
	);

for (long nPages = 16000; nPages <= 520000; nPages += 10000) 
	{
    long allocSize = nPages * PAGE;
    void *addr = virtualAlloc (allocSize);

	if (! addr)
		{
		printf ("Failed to allocate %d pages [%d bytes]\r\n", nPages, allocSize);
		break;
		}

    printf ("Allocated: %d pages [%d bytes] at 0x%08x\r\n", nPages, allocSize, addr);
    virtualFree (addr);
	}
}