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Visual C++ has some good features for finding memory leaks. But when you
are not using MFC, the compiler will not tell you the line where you
allocated the memory.
Here is a hack that add's that info to Visual C++ memory
checking. Put this in your most important header:
/****************************************************************************/
#define _MFC_OVERRIDES_NEW
void * __cdecl operator new(unsigned int,const char *,int);
inline void __cdecl operator delete(void *p, const char *, int)
{ ::operator delete(p); }
#define new new(__FILE__,__LINE__)
/****************************************************************************/
The implementation:
/****************************************************************************/
// this is the hack
#undef new
void * __cdecl operator new(unsigned int size,const char *file,int line)
{
return _malloc_dbg(size,_NORMAL_BLOCK,file,line);
}
#define new new(__FILE__,__LINE__)
// initialize memory debugging
// if you don't see the testleak, then you know it's not working!
#include <crtdbg.h>
void MemInit()
{
_CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG)|
_CRTDBG_LEAK_CHECK_DF|_CRTDBG_ALLOC_MEM_DF);
sChar *test = new sChar[16];
sCopyString(test,"TestLeak",16);
}
// nothing needed when exiting
void MemExit()
{
}
// when you abort, you don't need to check for memory leaks
// most likely you will have thousands....
void MemAbort()
{
_CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG)&
~(_CRTDBG_LEAK_CHECK_DF|_CRTDBG_ALLOC_MEM_DF));
}
/****************************************************************************/
If you need d3dx9.h, you might run into some trouble. Do the following:
/****************************************************************************/
#include "types.hpp" // my own headers are incompatible with windows.h
#include "intro.hpp" // they must come first
#include <windows.h> // now I include windows
#include <d3d9.h> // and d3d9
#undef new
#include <d3d9x.h> // but d3d9x needs unmodified operator new
#define new new(__FILE__,__LINE__)
/****************************************************************************/
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