Memory leak detection in C ++ / windows

Question

For debugging purposes, when I write the application, the first thing I do is put in stdafx.h:

// -- leak detection ----------------------------------------------------------
#ifdef _DEBUG   
// http://msdn.microsoft.com/en-us/library/e5ewb1h3(v=VS.80).aspx
#define _CRTDBG_MAP_ALLOC   
#include <stdlib.h>
#include <crtdbg.h>
#define DEBUG_NEW new(_NORMAL_BLOCK, __FILE__, __LINE__)
#define new DEBUG_NEW
#endif

Then I will add the following to the beginning of the main () function of the program:

#ifdef _DEBUG
_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
//_CrtSetBreakAlloc( 670 );
#endif  

Revising a new operator to provide leak information is a useful tool. But what about CoTaskMemAlloc and CoTaskMemFree? How can I detect leaks using these?

I am writing software using COM and DirectShow, and you need to know how to track leaks caused by using CoTask distributions.

thank!

Answer 1

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Answer 2

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Answer 3

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MSDN: http://msdn.microsoft.com/en-us/library/ms220948(VS.80).aspx

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Answer 4

CoTaskMemAlloc CoTaskMemFree? ?

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: CoTaskMemAlloc?