VS2005 检测内存泄漏的方法(转载)

一、非MFC程序可以用以下方法检测内存泄露：

1.程序开始包含如下定义：

#ifdef _DEBUG
#define DEBUG_CLIENTBLOCK new( _CLIENT_BLOCK, __FILE__, __LINE__)
#else
#define DEBUG_CLIENTBLOCK
#endif  // _DEBUG
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
#ifdef _DEBUG
#define new DEBUG_CLIENTBLOCK
#endif  // _DEBUG

2.程序中添加下面的函数：

_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF|_CRTDBG_LEAK_CHECK_DF);

Debug版本程序运行结束后如有内存泄漏，输出窗口中会显示类似信息：

Detected memory leaks!
Dumping objects ->
g:/programs/test/test.cpp(16) : {51} client block at 0x00385C58, subtype 0, 4 bytes long.
 Data: <    > CD CD CD CD
Object dump complete.

二、MFC程序内存泄漏检测方法：

1.在 CMyApp 中添加如下三个 CMemoryState 类的成员变量：

#ifdef _DEBUG
protected:
      CMemoryState m_msOld, m_msNew, m_msDiff;
#endif  // _DEBUG

2.在 CMyApp::InitInstance() 中添加如下代码：

#ifdef _DEBUG
      m_msOld.Checkpoint();
#endif  // _DEBUG

3.在 CMyApp::ExitInstance() 中添加如下代码：

#ifdef _DEBUG
      m_msNew.Checkpoint();
      if (m_msDiff.Difference(m_msOld, m_msNew))
      {
            afxDump<<"/nMemory Leaked :/n";
            m_msDiff.DumpStatistics();
            afxDump<<"Dump Complete !/n/n";
      }
#endif  // _DEBUG

Debug版本程序运行结束后如有内存泄漏，输出窗口中会显示类似信息：

Memory Leaked :
0 bytes in 0 Free Blocks.
8 bytes in 1 Normal Blocks.
0 bytes in 0 CRT Blocks.
0 bytes in 0 Ignore Blocks.
0 bytes in 0 Client Blocks.
Largest number used: 8825 bytes.
Total allocations: 47506 bytes.
Dump Complete !

Detected memory leaks!
Dumping objects ->
g:/programs/chat/chatdlg.cpp(120) : {118} normal block at 0x00D98150, 8 bytes long.
 Data: <        > A8 7F D9 00 01 00 00 00
Object dump complete.

本文转自：http://ufownl.blog.163.com/blog/static/1250122200861912757566/

http://blog.csdn.net/wangningyu/article/details/4465229