memtrace.hpp

一个WinCE6。0下的IP phone的源代码

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this sample source code is subject to the terms of the Microsoft
// license agreement under which you licensed this sample source code. If
// you did not accept the terms of the license agreement, you are not
// authorized to use this sample source code. For the terms of the license,
// please see the license agreement between you and Microsoft or, if applicable,
// see the LICENSE.RTF on your install media or the root of your tools installation.
// THE SAMPLE SOURCE CODE IS PROVIDED "AS IS", WITH NO WARRANTIES.
//
#pragma once

#ifdef DEBUG

#include <hash_map.hxx>

struct _MemInfo_t
{
    char FileName[25];
    char FunctionName[50];
    int LineNum;
    size_t SizeAllocated;
};

typedef ce::hash_map<void*, _MemInfo_t*> NewDeleteMap;
extern NewDeleteMap __PhoneApp_NewDeleteMap;

inline
void*
_DoAlloc(
    size_t ToAlloc, 
    const char* pFileName, 
    const char* pFunctionName, 
    int LineNum
    )
{
    void* pToReturn = LocalAlloc(LMEM_ZEROINIT, ToAlloc);

    //special logic for ProcessProvisionXML, the memory allocated from that function will be 
    //left to caller to free up
    if (strcmp(pFunctionName, "ProcessProvisionXML") == 0)
    {
        return pToReturn;   
    }
    

    if (pToReturn)
    {
        _MemInfo_t*   pInfo = (_MemInfo_t*)LocalAlloc(LMEM_ZEROINIT, sizeof(_MemInfo_t));
        if (pInfo)
        {
            const char* PostPathFileName = strrchr(pFileName, L'\\');
            if (! PostPathFileName)
            {
                PostPathFileName = pFileName;
            }
            else
            {
                PostPathFileName++;
            }
            
            StringCchCopyA(pInfo->FileName, _countof(pInfo->FileName), PostPathFileName); 
            StringCchCopyA(pInfo->FunctionName, _countof(pInfo->FunctionName), pFunctionName);
            pInfo->LineNum = LineNum;
            pInfo->SizeAllocated = ToAlloc;

            __PhoneApp_NewDeleteMap.insert(
                NewDeleteMap::value_type(
                    pToReturn,
                    pInfo
                    )
                    );
        }
    }

  
    return pToReturn;
}

inline
void*
operator new(
    size_t ToAlloc, 
    const char* pFileName, 
    const char* pFunctionName, 
    int LineNum
    )
{
    
    return _DoAlloc(ToAlloc, pFileName, pFunctionName, LineNum);
}

inline void _DoDelete(void* pToDelete)
{
    NewDeleteMap::iterator it = __PhoneApp_NewDeleteMap.find( pToDelete );
    if (it != __PhoneApp_NewDeleteMap.end())
    {
        _MemInfo_t*   pInfo = it->second;
        LocalFree (pInfo);

        __PhoneApp_NewDeleteMap.erase(it);
    }

    LocalFree(pToDelete);
}

inline void operator delete(void*  pToDelete)
{
    _DoDelete(pToDelete);
}

inline void operator delete[] (void* pToDelete)
{
    _DoDelete(pToDelete);
}

inline void _MemTrackCheck()
{
    NewDeleteMap::iterator it = __PhoneApp_NewDeleteMap.begin();
    while (it != __PhoneApp_NewDeleteMap.end())
    {
        _MemInfo_t*   pInfo = it->second;
        DEBUGMSG(1, (L"Leaked %d bytes:\tFile:%S\tFunction:%S\tLine Number:%d", 
            pInfo->SizeAllocated, 
            pInfo->FileName, 
            pInfo->FunctionName, 
            pInfo->LineNum
            ));

        delete pInfo;
        ++it;
    }

    if (__PhoneApp_NewDeleteMap.begin() != __PhoneApp_NewDeleteMap.end())
    {
        ASSERT(0);
    }
}

#define New     new(__FILE__, __FUNCTION__, __LINE__)
#define new     New
#define MemTrackCheck()     _MemTrackCheck()
#define MemTrackInitialize() NewDeleteMap        __PhoneApp_NewDeleteMap;

#define TrackAlloc(size)  _DoAlloc(size, __FILE__, __FUNCTION__, __LINE__)
#define TrackFree(p)      _DoDelete(p)

#else

#define MemTrackCheck()     
#define MemTrackInitialize() 

#define TrackAlloc(s)   LocalAlloc(LMEM_ZEROINIT, s)
#define TrackFree(p)    LocalFree(p)

#endif //ifdef DEBUG