有关内存监控的一些知识

这两天在写一个内存监控的DLL,刚开始学写DLL,什么都不会,昨天在网上找一个有关内存的小程序,如下:

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

#define DIV 1024

char *divisor = "K";

#define WIDTH 7

void main(int argc, char *argv[])
{
MEMORYSTATUS stat;

GlobalMemoryStatus (&stat);

printf ("The MemoryStatus structure is %ld bytes long./n",
stat.dwLength);
printf ("It should be %d./n", sizeof (stat));
printf ("%ld percent of memory is in use./n",
stat.dwMemoryLoad);
printf ("There are %*ld total %sbytes of physical memory./n",
WIDTH, stat.dwTotalPhys/DIV, divisor);
printf ("There are %*ld free %sbytes of physical memory./n",
WIDTH, stat.dwAvailPhys/DIV, divisor);
printf ("There are %*ld total %sbytes of paging file./n",
WIDTH, stat.dwTotalPageFile/DIV, divisor);
printf ("There are %*ld free %sbytes of paging file./n",
WIDTH, stat.dwAvailPageFile/DIV, divisor);
printf ("There are %*lx total %sbytes of virtual memory./n",
WIDTH, stat.dwTotalVirtual/DIV, divisor);
printf ("There are %*lx free %sbytes of virtual memory./n",
WIDTH, stat.dwAvailVirtual/DIV, divisor);
}

我要写的是一个有关内存信息实时采集的库,看了一天了还是没有头绪,晕了!