如何在C++中获取Windows下的内存使用率

我试图找出我的应用程序在程序本身内消耗了多少内存.我正在寻找的内存使用量是Windows任务管理器的"进程"选项卡上"内存使用情况"列中报告的数量.

一个很好的起点是GetProcessMemoryInfo,它报告有关指定进程的各种内存信息.您可以GetCurrentProcess()作为进程句柄传递,以获取有关调用进程的信息.

可能是任务管理器中与Mem Usage coulmn最接近的WorkingSetSize成员PROCESS_MEMORY_COUNTERS,但它不会完全相同.我会尝试不同的值来找到最符合您需求的值.

我认为这就是你要找的东西:

#include
#include   
#include

// Use to convert bytes to MB
#define DIV 1048576

// Use to convert bytes to MB
//#define DIV 1024

// Specify the width of the field in which to print the numbers. 
// The asterisk in the format specifier "%*I64d" takes an integer 
// argument and uses it to pad and right justify the number.

#define WIDTH 7

void _tmain()
{
  MEMORYSTATUSEX statex;

  statex.dwLength = sizeof (statex);

  GlobalMemoryStatusEx (&statex);


  _tprintf (TEXT("There is  %*ld percent of memory in use.\n"),WIDTH, statex.dwMemoryLoad);
  _tprintf (TEXT("There are %*I64d total Mbytes of physical memory.\n"),WIDTH,statex.ullTotalPhys/DIV);
  _tprintf (TEXT("There are %*I64d free Mbytes of physical memory.\n"),WIDTH, statex.ullAvailPhys/DIV);
  _tprintf (TEXT("There are %*I64d total Mbytes of paging file.\n"),WIDTH, statex.ullTotalPageFile/DIV);
  _tprintf (TEXT("There are %*I64d free Mbytes of paging file.\n"),WIDTH, statex.ullAvailPageFile/DIV);
  _tprintf (TEXT("There are %*I64d total Mbytes of virtual memory.\n"),WIDTH, statex.ullTotalVirtual/DIV);
  _tprintf (TEXT("There are %*I64d free Mbytes of virtual memory.\n"),WIDTH, statex.ullAvailVirtual/DIV);
  _tprintf (TEXT("There are %*I64d free Mbytes of extended memory.\n"),WIDTH, statex.ullAvailExtendedVirtual/DIV);


}

GetProcessMemoryInfo是您正在寻找的功能.MSDN上的文档将指出您正确的方向.从传入的PROCESS_MEMORY_COUNTERS结构中获取所需的信息.

你需要包含psapi.h.

试试看GetProcessMemoryInfo.我没有使用它,但它看起来像你需要的.