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Diffstat (limited to 'src/LeakFinder.cpp')
| -rw-r--r-- | src/LeakFinder.cpp | 1048 |
1 files changed, 0 insertions, 1048 deletions
diff --git a/src/LeakFinder.cpp b/src/LeakFinder.cpp deleted file mode 100644 index dba8275c8..000000000 --- a/src/LeakFinder.cpp +++ /dev/null @@ -1,1048 +0,0 @@ - -// LeakFinder.cpp - -// Finds memory leaks rather effectively - -// _X: downloaded from http://www.codeproject.com/Articles/3134/Memory-Leak-and-Exception-Trace-CRT-and-COM-Leaks - the real link is in the comments, RC11 version - - - - - -/********************************************************************** - * - * LEAKFINDER.CPP - * - * - * - * History: - * 2010-04-15 RC10 - Updated to VC10 RTM - * Fixed Bug: Application Verifier, thanks to handsinmypocket! - * http://www.codeproject.com/KB/applications/leakfinder.aspx?msg=3439751#xx3439751xx - * 2008-08-04 RC6 - Updated to VC9 RTM - * Fixed Bug: Missing "ole32.lib" LIB - * http://www.codeproject.com/KB/applications/leakfinder.aspx?msg=2253980#xx2253980xx - * Fixed Bug: Compiled with "WIN32_LEAN_AND_MEAN" - * http://www.codeproject.com/KB/applications/leakfinder.aspx?msg=1824718#xx1824718xx - * Fixed Bug: Compiling with "/Wall" - * http://www.codeproject.com/KB/threads/StackWalker.aspx?msg=2638243#xx2638243xx - * Removed "#pragma init_seg (compiler)" from h-file - * - * 2005-12-30 RC5 - Now again VC8 RTM compatible - * - Added Xml-Output (like in the old Leakfinder) - * YOu need to define XML_LEAK_FINDER to activate it - * So you can use the LeakAnalyseTool from - * http://www.codeproject.com/tools/leakfinder.asp - * - * 2005-12-13 RC4 - Merged with the new "StackWalker"-project on - * http://www.codeproject.com/threads/StackWalker.asp - * - * 2005-08-01 RC3 - Merged with the new "StackWalker"-project on - * http://www.codeproject.com/threads/StackWalker.asp - * - * 2005-07-05 RC2 - First version with x86, IA64 and x64 support - * - * 2005-07-04 RC1 - Added "OutputOptions" - * - New define "INIT_LEAK_FINDER_VERBOSE" to - * display more info (for error reporting) - * - * 2005-07-01 Beta3 - Workaround for a bug in the new dbghelp.dll - * (version 6.5.3.7 from 2005-05-30; StakWalk64 no - * refused to produce an callstack on x86 systems - * if the context is NULL or has some registers set - * to 0 (for example Esp). This is against the - * documented behaviour of StackWalk64...) - * - First version with x64-support - * - * 2005-06-16 Beta1 First public release with the following features: - * - Completely rewritten in C++ (object oriented) - * - CRT-Leak-Report - * - COM-Leak-Report - * - Report is done via "OutputDebugString" so - * the line can directly selected in the debugger - * and is opening the corresponding file/line of - * the allocation - * - Tried to support x64 systems, bud had some - * trouble wih StackWalk64 - * See: http://blog.kalmbachnet.de/?postid=43 - * - * LICENSE (http://www.opensource.org/licenses/bsd-license.php) - * - * Copyright (c) 2005-2010, Jochen Kalmbach - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * Neither the name of Jochen Kalmbach nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - **********************************************************************/ - -#include "Globals.h" - -#include <tchar.h> -#include <objidl.h> // Needed if compiled with "WIN32_LEAN_AND_MEAN" -#include <crtdbg.h> - -#include "LeakFinder.h" - -// Currently only tested with MS VC++ 5 to 2015 -#if (_MSC_VER < 1100) || (_MSC_VER > 1900) - #error Only MS VC++ 5/6/7/7.1/8/9/10/11/12 supported. Check if the '_CrtMemBlockHeader' has not changed with this compiler! -#endif - - -/* _X: MSVC 2012 (MSC 1700) seems to use a different allocation scheme for STL containers, -* allocating lots of small objects and running out of memory very soon -* Thus for MSVC 2012 we cut the callstack buffer length in half -* -* _X 2013_08_25: The callstack tracking gets worse even for MSVC 2008, a single lua_state eats 50 MiB of RAM -* Therefore I decided to further reduce the buffers from 0x2000 to 0x1000 -*/ -// Controlling the callstack depth -#if (_MSC_VER < 1700) - #define MAX_CALLSTACK_LEN_BUF 0x1000 -#else - #define MAX_CALLSTACK_LEN_BUF 0x0800 -#endif - - - - - -#define IGNORE_CRT_ALLOC - -// disable 64-bit compatibility-checks (because we explicite have here either x86 or x64!) -#pragma warning(disable:4312) // warning C4312: 'type cast' : conversion from 'DWORD' to 'LPCVOID' of greater size -#pragma warning(disable:4826) - - -// secure-CRT_functions are only available starting with VC8 -#if _MSC_VER < 1400 -#define _snprintf_s _snprintf -#define _tcscat_s _tcscat -#endif - - - - - -static std::string SimpleXMLEncode(LPCSTR szText) -{ - std::string szRet; - for (size_t i=0; i<strlen(szText); i++) - { - switch(szText[i]) - { - case '&': - szRet.append("&"); - break; - case '<': - szRet.append("<"); - break; - case '>': - szRet.append(">"); - break; - case '"': - szRet.append("""); - break; - case '\'': - szRet.append("'"); - break; - default: - szRet += szText[i]; - } - } - return szRet; -} - - - - - -LeakFinderOutput::LeakFinderOutput(int options, LPCSTR szSymPath) - : StackWalker(options, szSymPath) -{ -} - - - - - -void LeakFinderOutput::OnLeakSearchStart(LPCSTR szLeakFinderName) -{ - CHAR buffer[1024]; - _snprintf_s(buffer, 1024, "######## %s ########\n", szLeakFinderName); - this->OnOutput(buffer); -} - - - - - -void LeakFinderOutput::OnLeakStartEntry(LPCSTR szKeyName, SIZE_T nDataSize) -{ - CHAR buffer[1024]; - _snprintf_s(buffer, 1024, "--------------- Key: %s, %d bytes ---------\n", szKeyName, nDataSize); - this->OnOutput(buffer); -} - - - - - -void LeakFinderOutput::OnCallstackEntry(CallstackEntryType eType, CallstackEntry &entry) -{ - if ( (eType != lastEntry) && (entry.offset != 0) ) - { - if ( ((this->m_options & LeakFinderShowCompleteCallstack) == 0) && ( - (strstr(entry.lineFileName, "afxmem.cpp") != NULL) || - (strstr(entry.lineFileName, "dbgheap.c") != NULL) || - (strstr(entry.lineFileName, "new.cpp") != NULL) || - (strstr(entry.lineFileName, "newop.cpp") != NULL) || - (strstr(entry.lineFileName, "leakfinder.cpp") != NULL) || - (strstr(entry.lineFileName, "stackwalker.cpp") != NULL) - ) ) - { - return; - } - } - StackWalker::OnCallstackEntry(eType, entry); -} - - - - - -// #################################################################### -// XML-Output -LeakFinderXmlOutput::LeakFinderXmlOutput() -{ - TCHAR szXMLFileName[1024]; - - GetModuleFileName(NULL, szXMLFileName, sizeof(szXMLFileName) / sizeof(TCHAR)); - _tcscat_s(szXMLFileName, _T(".mem.xml-leaks")); -#if _MSC_VER < 1400 - m_fXmlFile = _tfopen(szXMLFileName, _T("w")); -#else - m_fXmlFile = NULL; - _tfopen_s(&m_fXmlFile, szXMLFileName, _T("w")); -#endif - if (m_fXmlFile != NULL) - { - SYSTEMTIME st; - GetLocalTime(&st); - fprintf(m_fXmlFile, "<MEMREPORT date=\"%.2d/%.2d/%.4d\" time=\"%.2d:%.2d:%.2d\">\n", - st.wMonth, st.wDay, st.wYear, - st.wHour, st.wMinute, st.wSecond); - } - else - { - MessageBox(NULL, _T("Could not open xml-logfile for leakfinder!"), _T("Warning"), MB_ICONHAND); - } -} - - - - - -LeakFinderXmlOutput::LeakFinderXmlOutput(LPCTSTR szFileName) : - m_Progress(10) -{ -#if _MSC_VER < 1400 - m_fXmlFile = _tfopen(szFileName, _T("w")); -#else - m_fXmlFile = NULL; - _tfopen_s(&m_fXmlFile, szFileName, _T("w")); -#endif - if (m_fXmlFile == NULL) - { - MessageBox(NULL, _T("Could not open xml-logfile for leakfinder!"), _T("Warning"), MB_ICONHAND); - } - else - { - fprintf(m_fXmlFile, "<MEMREPORT>\n"); - } -} - - - - - -LeakFinderXmlOutput::~LeakFinderXmlOutput() -{ - if (m_fXmlFile != NULL) - { - // Write the ending-tags and close the file - fprintf(m_fXmlFile, "</MEMREPORT>\n"); - fclose(m_fXmlFile); - } - m_fXmlFile = NULL; -} - - - - - -void LeakFinderXmlOutput::OnLeakSearchStart(LPCSTR sszLeakFinderName) -{ -} - - - - - -void LeakFinderXmlOutput::OnLeakStartEntry(LPCSTR szKeyName, SIZE_T nDataSize) -{ - if (m_fXmlFile != NULL) - { - fprintf(m_fXmlFile, "\t<LEAK requestID=\"%s\" size=\"%d\">\n", SimpleXMLEncode(szKeyName).c_str(), nDataSize); - } - if (--m_Progress == 0) - { - m_Progress = 100; - putc('.', stdout); - } -} - - - - - -void LeakFinderXmlOutput::OnCallstackEntry(CallstackEntryType eType, CallstackEntry &entry) -{ - if (m_fXmlFile != NULL) - { - if (eType != lastEntry) - { - fprintf(m_fXmlFile, "\t\t<STACKENTRY decl=\"%s\" decl_offset=\"%+ld\" ", SimpleXMLEncode(entry.undName).c_str(), entry.offsetFromSmybol); - fprintf(m_fXmlFile, "srcfile=\"%s\" line=\"%d\" line_offset=\"%+ld\" ", SimpleXMLEncode(entry.lineFileName).c_str(), entry.lineNumber, entry.offsetFromLine); - fprintf(m_fXmlFile, "module=\"%s\" base=\"%08lx\" ", SimpleXMLEncode(entry.moduleName).c_str(), entry.baseOfImage); - fprintf(m_fXmlFile, "/>\n"); - } - else - { - fprintf(m_fXmlFile, "\t</LEAK>\n"); - } - } -} - - - - - -// ########################################################################## -// ########################################################################## -// ########################################################################## -// Base class for storing contexts in a hashtable -template <typename HASHTABLE_KEY> class ContextHashtableBase -{ -public: - ContextHashtableBase(SIZE_T sizeOfHastable, LPCSTR finderName) - { - SIZE_T s = sizeOfHastable*sizeof(AllocHashEntryType); - m_hHeap = HeapCreate(0, 10*1024 + s, 0); - if (m_hHeap == NULL) - throw; - pAllocHashTable = (AllocHashEntryType*) own_malloc(s); - sAllocEntries = sizeOfHastable; - m_finderName = own_strdup(finderName); - } - -protected: - virtual ~ContextHashtableBase() - { - if (pAllocHashTable != NULL) - own_free(pAllocHashTable); - pAllocHashTable = NULL; - - own_free(m_finderName); - m_finderName = NULL; - - if (m_hHeap != NULL) - HeapDestroy(m_hHeap); - } - - __inline LPVOID own_malloc(SIZE_T size) - { - return HeapAlloc(m_hHeap, HEAP_ZERO_MEMORY, size); - } - __inline VOID own_free(LPVOID memblock) - { - HeapFree(m_hHeap, 0, memblock); - } - __inline CHAR *own_strdup(const char *str) - { - size_t len = strlen(str)+1; - CHAR *c = (CHAR*)own_malloc(len); -#if _MSC_VER >= 1400 - strcpy_s(c, len, str); -#else - strcpy(c, str); -#endif - return c; - } - - // Disables this leak-finder - virtual LONG Disable() = 0; - // enables the leak-finder again... - virtual LONG Enable() = 0; - -protected: - // Entry for each allocation - typedef struct AllocHashEntryType { - HASHTABLE_KEY key; - SIZE_T nDataSize; // Size of the allocated memory - struct AllocHashEntryType *Next; - CONTEXT c; - PVOID pStackBaseAddr; - SIZE_T nMaxStackSize; - - PVOID pCallstackOffset; - SIZE_T nCallstackLen; - char pcCallstackAddr[MAX_CALLSTACK_LEN_BUF]; // min of both values... - } AllocHashEntryType; - -protected: - virtual SIZE_T HashFunction(HASHTABLE_KEY &key) = 0; - virtual BOOL IsKeyEmpty(HASHTABLE_KEY &key) = 0; - virtual VOID SetEmptyKey(HASHTABLE_KEY &key) = 0; - virtual VOID GetKeyAsString(HASHTABLE_KEY &key, CHAR *szName, SIZE_T nBufferLen) = 0; - //virtual SIZE_T GetNativeBytes(HASHTABLE_KEY &key, CHAR *szName, SIZE_T nBufferLen) { return 0; } - -public: - VOID Insert(HASHTABLE_KEY &key, CONTEXT &context, SIZE_T nDataSize) - { - SIZE_T HashIdx; - AllocHashEntryType *pHashEntry; - - // generate hash-value - HashIdx = HashFunction(key); - - pHashEntry = &pAllocHashTable[HashIdx]; - if (IsKeyEmpty(pHashEntry->key) != FALSE) { - // Entry is empty... - } - else { - // Entry is not empy! make a list of entries for this hash value... - while(pHashEntry->Next != NULL) { - pHashEntry = pHashEntry->Next; - } - - pHashEntry->Next = (AllocHashEntryType*) own_malloc(sizeof(AllocHashEntryType)); - g_CurrentMemUsage += CRTTable::AllocHashEntryTypeSize; - pHashEntry = pHashEntry->Next; - if (pHashEntry == NULL) - { - // Exhausted the available memory? - return; - } - } - pHashEntry->key = key; - pHashEntry->nDataSize = nDataSize; - pHashEntry->Next = NULL; -#ifdef _M_IX86 - pHashEntry->pCallstackOffset = (LPVOID) std::min(context.Ebp, context.Esp); -#elif _M_X64 - pHashEntry->pCallstackOffset = (LPVOID) std::min(context.Rdi, context.Rsp); -#elif _M_IA64 - pHashEntry->pCallstackOffset = (LPVOID) std::min(context.IntSp, context.RsBSP); -#else -#error "Platform not supported!" -#endif - pHashEntry->c = context; - - // Query the max. stack-area: - MEMORY_BASIC_INFORMATION MemBuffer; - if(VirtualQuery((LPCVOID) pHashEntry->pCallstackOffset, &MemBuffer, sizeof(MemBuffer)) > 0) - { - pHashEntry->pStackBaseAddr = MemBuffer.BaseAddress; - pHashEntry->nMaxStackSize = MemBuffer.RegionSize; - } - else - { - pHashEntry->pStackBaseAddr = 0; - pHashEntry->nMaxStackSize = 0; - } - - SIZE_T bytesToRead = MAX_CALLSTACK_LEN_BUF; - if (pHashEntry->nMaxStackSize > 0) - { - SIZE_T len = ((SIZE_T) pHashEntry->pStackBaseAddr + pHashEntry->nMaxStackSize) - (SIZE_T)pHashEntry->pCallstackOffset; - bytesToRead = std::min(len, (SIZE_T)MAX_CALLSTACK_LEN_BUF); - } - // Now read the callstack: - if (ReadProcessMemory(GetCurrentProcess(), (LPCVOID) pHashEntry->pCallstackOffset, &(pHashEntry->pcCallstackAddr), bytesToRead, &(pHashEntry->nCallstackLen)) == 0) - { - // Could not read memory... - pHashEntry->nCallstackLen = 0; - pHashEntry->pCallstackOffset = 0; - } // read callstack - } // Insert - - BOOL Remove(HASHTABLE_KEY &key) - { - SIZE_T HashIdx; - AllocHashEntryType *pHashEntry, *pHashEntryLast; - - // get the Hash-Value - HashIdx = HashFunction(key); - - pHashEntryLast = NULL; - pHashEntry = &pAllocHashTable[HashIdx]; - while(pHashEntry != NULL) { - if (pHashEntry->key == key) { - // release my memory - if (pHashEntryLast == NULL) { - // It is an entry in the table, so do not release this memory - if (pHashEntry->Next == NULL) { - // It was the last entry, so empty the table entry - SetEmptyKey(pAllocHashTable[HashIdx].key); - //memset(&pAllocHashTable[HashIdx], 0, sizeof(pAllocHashTable[HashIdx])); - } - else { - // There are some more entries, so shorten the list - AllocHashEntryType *pTmp = pHashEntry->Next; - *pHashEntry = *(pHashEntry->Next); - own_free(pTmp); - g_CurrentMemUsage -= CRTTable::AllocHashEntryTypeSize; - } - return TRUE; - } - else { - // now, I am in an dynamic allocated entry (it was a collision) - pHashEntryLast->Next = pHashEntry->Next; - own_free(pHashEntry); - g_CurrentMemUsage -= CRTTable::AllocHashEntryTypeSize; - return TRUE; - } - } - pHashEntryLast = pHashEntry; - pHashEntry = pHashEntry->Next; - } - - // if we are here, we could not find the RequestID - return FALSE; - } - - AllocHashEntryType *Find(HASHTABLE_KEY &key) - { - SIZE_T HashIdx; - AllocHashEntryType *pHashEntry; - - // get the Hash-Value - HashIdx = HashFunction(key); - - pHashEntry = &pAllocHashTable[HashIdx]; - while(pHashEntry != NULL) { - if (pHashEntry->key == key) { - return pHashEntry; - } - pHashEntry = pHashEntry->Next; - } - - // entry was not found! - return NULL; - } - - // For the followong static-var See comment in "ShowCallstack"... - static BOOL CALLBACK ReadProcessMemoryFromHashEntry64( - HANDLE hProcess, // hProcess must be a pointer to an hash-entry! - DWORD64 lpBaseAddress, - PVOID lpBuffer, - DWORD nSize, - LPDWORD lpNumberOfBytesRead, - LPVOID pUserData // optional data, which was passed in "ShowCallstack" - ) - { - *lpNumberOfBytesRead = 0; - AllocHashEntryType *pHashEntry = (AllocHashEntryType*) pUserData; - if (pHashEntry == NULL) - { - return FALSE; - } - - if ( ( (DWORD64)lpBaseAddress >= (DWORD64)pHashEntry->pCallstackOffset) && ((DWORD64)lpBaseAddress <= ((DWORD64)pHashEntry->pCallstackOffset+pHashEntry->nCallstackLen)) ) { - // Memory is located in saved Callstack: - // Calculate the offset - DWORD dwOffset = (DWORD) ((DWORD64)lpBaseAddress - (DWORD64)pHashEntry->pCallstackOffset); - DWORD dwSize = __min(nSize, MAX_CALLSTACK_LEN_BUF-dwOffset); - memcpy(lpBuffer, &(pHashEntry->pcCallstackAddr[dwOffset]), dwSize); - *lpNumberOfBytesRead = dwSize; - if (dwSize != nSize) - { - return FALSE; - } - *lpNumberOfBytesRead = nSize; - return TRUE; - } - - if (*lpNumberOfBytesRead == 0) // Memory could not be found - { - if ( ( (DWORD64)lpBaseAddress < (DWORD64)pHashEntry->pStackBaseAddr) || ((DWORD64)lpBaseAddress > ((DWORD64)pHashEntry->pStackBaseAddr+pHashEntry->nMaxStackSize)) ) - { - // Stackwalking is done by reading the "real memory" (normally this happens when the StackWalk64 tries to read some code) - SIZE_T st = 0; - BOOL bRet = ReadProcessMemory(hProcess, (LPCVOID) lpBaseAddress, lpBuffer, nSize, &st); - *lpNumberOfBytesRead = (DWORD) st; - return bRet; - } - } - - return TRUE; - } - - VOID ShowLeaks(LeakFinderOutput &leakFinderOutput) - { - SIZE_T ulTemp; - AllocHashEntryType *pHashEntry; - ULONG ulCount = 0; - SIZE_T ulLeaksByte = 0; - - leakFinderOutput.OnLeakSearchStart(this->m_finderName); - - // Move throu every entry - CHAR keyName[1024]; - for(ulTemp = 0; ulTemp < this->sAllocEntries; ulTemp++) { - pHashEntry = &pAllocHashTable[ulTemp]; - if (IsKeyEmpty(pHashEntry->key) == FALSE) { - while(pHashEntry != NULL) { - ulCount++; - CONTEXT c; - memcpy(&c, &(pHashEntry->c), sizeof(CONTEXT)); - - this->GetKeyAsString(pHashEntry->key, keyName, 1024); - - leakFinderOutput.OnLeakStartEntry(keyName, pHashEntry->nDataSize); - leakFinderOutput.ShowCallstack(GetCurrentThread(), &c, ReadProcessMemoryFromHashEntry64, pHashEntry); - - // Count the number of leaky bytes - ulLeaksByte += pHashEntry->nDataSize; - - pHashEntry = pHashEntry->Next; - } // while - } - } - } - - AllocHashEntryType *pAllocHashTable; - SIZE_T sAllocEntries; - HANDLE m_hHeap; - LPSTR m_finderName; - bool m_bSupressUselessLines; -}; // template <typename HASHTABLE_KEY> class ContextHashtableBase - - - - - -// ########################################################################## -// ########################################################################## -// ########################################################################## -// Specialization for CRT-Leaks: -// VC5 has excluded all types in release-builds -#ifdef _DEBUG - -// The follwoing is copied from dbgint.h: -// <CRT_INTERNALS> -/* -* For diagnostic purpose, blocks are allocated with extra information and -* stored in a doubly-linked list. This makes all blocks registered with -* how big they are, when they were allocated, and what they are used for. -*/ - -// forward declaration: -#ifndef _M_CEE_PURE -#define MyAllocHookCallingConvention __cdecl -#endif -#if _MSC_VER >= 1400 -#ifdef _M_CEE -#define MyAllocHookCallingConvention __clrcall -#endif -#endif - -static int MyAllocHookCallingConvention MyAllocHook(int nAllocType, void *pvData, - size_t nSize, int nBlockUse, long lRequest, -#if _MSC_VER <= 1100 // Special case for VC 5 and before - const char * szFileName, -#else - const unsigned char * szFileName, -#endif - int nLine); - -static _CRT_ALLOC_HOOK s_pfnOldCrtAllocHook = NULL; -static LONG s_CrtDisableCount = 0; -static LONG s_lMallocCalled = 0; - - - - - -class CRTTable : public ContextHashtableBase<LONG> -{ -public: - CRTTable() : ContextHashtableBase<LONG>(1021, "CRT-Leaks") - { - // save the previous alloc hook - s_pfnOldCrtAllocHook = _CrtSetAllocHook(MyAllocHook); - } - - virtual ~CRTTable() - { - _CrtSetAllocHook(s_pfnOldCrtAllocHook); - } - - virtual LONG Disable() - { - return InterlockedIncrement(&s_CrtDisableCount); - } - virtual LONG Enable() - { - return InterlockedDecrement(&s_CrtDisableCount); - } - - virtual SIZE_T HashFunction(LONG &key) - { - // I couldnīt find any better and faster - return key % sAllocEntries; - } - virtual BOOL IsKeyEmpty(LONG &key) - { - if (key == 0) - return TRUE; - return FALSE; - } - virtual VOID SetEmptyKey(LONG &key) - { - key = 0; - } - virtual VOID GetKeyAsString(LONG &key, CHAR *szName, SIZE_T nBufferLen) - { -#if _MSC_VER < 1400 - _snprintf_s(szName, nBufferLen, "%d", key); -#else - _snprintf_s(szName, nBufferLen, nBufferLen, "%d", key); -#endif - } - - static const int AllocHashEntryTypeSize = sizeof(AllocHashEntryType); - -protected: - CHAR *m_pBuffer; - SIZE_T m_maxBufferLen; - SIZE_T m_bufferLen; -}; // class CRTTable - - -#define nNoMansLandSize 4 - -typedef struct _CrtMemBlockHeader -{ - struct _CrtMemBlockHeader * pBlockHeaderNext; - struct _CrtMemBlockHeader * pBlockHeaderPrev; - char * szFileName; - int nLine; -#ifdef _WIN64 - /* These items are reversed on Win64 to eliminate gaps in the struct - * and ensure that sizeof(struct)%16 == 0, so 16-byte alignment is - * maintained in the debug heap. - */ - int nBlockUse; - size_t nDataSize; -#else /* _WIN64 */ - size_t nDataSize; - int nBlockUse; -#endif /* _WIN64 */ - long lRequest; - unsigned char gap[nNoMansLandSize]; - /* followed by: - * unsigned char data[nDataSize]; - * unsigned char anotherGap[nNoMansLandSize]; - */ -} _CrtMemBlockHeader; -#define pbData(pblock) ((unsigned char *)((_CrtMemBlockHeader *)pblock + 1)) -#define pHdr(pbData) (((_CrtMemBlockHeader *)pbData)-1) -// </CRT_INTERNALS> - -static CRTTable *g_pCRTTable = NULL; - -size_t g_CurrentMemUsage = 0; - - - - - -// MyAllocHook is Single-Threaded, that means the the calls are serialized in the calling function! -static int MyAllocHook(int nAllocType, void *pvData, - size_t nSize, int nBlockUse, long lRequest, -#if _MSC_VER <= 1100 // Special case for VC 5 - const char * szFileName, -#else - const unsigned char * szFileName, -#endif - int nLine) -{ - //static TCHAR *operation[] = { _T(""), _T("ALLOCATIONG"), _T("RE-ALLOCATING"), _T("FREEING") }; - //static TCHAR *blockType[] = { _T("Free"), _T("Normal"), _T("CRT"), _T("Ignore"), _T("Client") }; - -#ifdef IGNORE_CRT_ALLOC - if (_BLOCK_TYPE(nBlockUse) == _CRT_BLOCK) // Ignore internal C runtime library allocations - return TRUE; -#endif - extern int _crtDbgFlag; - if ( ((_CRTDBG_ALLOC_MEM_DF & _crtDbgFlag) == 0) && ( (nAllocType == _HOOK_ALLOC) || (nAllocType == _HOOK_REALLOC) ) ) - { - // Someone has disabled that the runtime should log this allocation - // so we do not log this allocation - if (s_pfnOldCrtAllocHook != NULL) - s_pfnOldCrtAllocHook(nAllocType, pvData, nSize, nBlockUse, lRequest, szFileName, nLine); - return TRUE; - } - - // Handle the Disable/Enable setting - if (InterlockedExchangeAdd(&s_CrtDisableCount, 0) != 0) - { - return TRUE; - } - - // Prevent from reentrat calls - if (InterlockedIncrement(&s_lMallocCalled) > 1) - { - // I was already called - InterlockedDecrement(&s_lMallocCalled); - // call the previous alloc hook - if (s_pfnOldCrtAllocHook != NULL) - s_pfnOldCrtAllocHook(nAllocType, pvData, nSize, nBlockUse, lRequest, szFileName, nLine); - return TRUE; - } - - _ASSERT( (nAllocType == _HOOK_ALLOC) || (nAllocType == _HOOK_REALLOC) || (nAllocType == _HOOK_FREE) ); - _ASSERT( ( _BLOCK_TYPE(nBlockUse) >= 0 ) && ( _BLOCK_TYPE(nBlockUse) < 5 ) ); - - if (nAllocType == _HOOK_FREE) - { - // freeing - // Try to get the header information - if (_CrtIsValidHeapPointer(pvData)) { // it is a valid Heap-Pointer - // get the ID - _CrtMemBlockHeader *pHead; - // get a pointer to memory block header - pHead = pHdr(pvData); - nSize = pHead->nDataSize; - lRequest = pHead->lRequest; // This is the ID! - - if (pHead->nBlockUse == _IGNORE_BLOCK) - { - InterlockedDecrement(&s_lMallocCalled); - if (s_pfnOldCrtAllocHook != NULL) - { - s_pfnOldCrtAllocHook(nAllocType, pvData, nSize, nBlockUse, lRequest, szFileName, nLine); - } - return TRUE; - } - } - if (lRequest != 0) - { - // RequestID was found - size_t temp = g_CurrentMemUsage; - if (g_pCRTTable->Remove(lRequest)) - { - g_CurrentMemUsage -= nSize; - } - if (g_CurrentMemUsage > temp) - { - printf("********************************************\n"); - printf("** Server detected underflow in memory **\n"); - printf("** usage counter. Something is not right. **\n"); - printf("** Writing memory dump into memdump.xml **\n"); - printf("********************************************\n"); - printf("Please wait\n"); - - LeakFinderXmlOutput Output(L"memdump.xml"); - DumpUsedMemory(&Output); - - printf("\nMemory dump complete. Server will now abort.\n"); - abort(); - } - } - } // freeing - - if (nAllocType == _HOOK_REALLOC) - { - // re-allocating - // Try to get the header information - if (_CrtIsValidHeapPointer(pvData)) { // it is a valid Heap-Pointer - BOOL bRet; - LONG lReallocRequest; - // get the ID - _CrtMemBlockHeader *pHead; - // get a pointer to memory block header - pHead = pHdr(pvData); - // Try to find the RequestID in the Hash-Table, mark it that it was freed - lReallocRequest = pHead->lRequest; - size_t temp = g_CurrentMemUsage; - bRet = g_pCRTTable->Remove(lReallocRequest); - if (bRet) - { - g_CurrentMemUsage -= pHead->nDataSize; - } - if (g_CurrentMemUsage > temp) - { - printf("********************************************\n"); - printf("** Server detected underflow in memory **\n"); - printf("** usage counter. Something is not right. **\n"); - printf("** Writing memory dump into memdump.xml **\n"); - printf("********************************************\n"); - printf("Please wait\n"); - - LeakFinderXmlOutput Output(L"memdump.xml"); - DumpUsedMemory(&Output); - - printf("\nMemory dump complete. Server will now abort.\n"); - abort(); - } - } // ValidHeapPointer - } // re-allocating - - //if ( (g_ulShowStackAtAlloc < 3) && (nAllocType == _HOOK_FREE) ) { - if (nAllocType == _HOOK_FREE) - { - InterlockedDecrement(&s_lMallocCalled); - // call the previous alloc hook - if (s_pfnOldCrtAllocHook != NULL) - { - s_pfnOldCrtAllocHook(nAllocType, pvData, nSize, nBlockUse, lRequest, szFileName, nLine); - } - return TRUE; - } - - CONTEXT c; - GET_CURRENT_CONTEXT(c, CONTEXT_FULL); - - // Only insert in the Hash-Table if it is not a "freeing" - if (nAllocType != _HOOK_FREE) - { - if (lRequest != 0) // Always a valid RequestID should be provided (see comments in the header) - { - //No need to check for overflow since we are checking if we are getting higher than 1gb. - //If we change this, then we probably would want an overflow check. - g_CurrentMemUsage += nSize ; - g_pCRTTable->Insert(lRequest, c, nSize); - - if (g_CurrentMemUsage > 1536 * 1024* 1024) - { - printf("******************************************\n"); - printf("** Server reached 1.5 GiB memory usage, **\n"); - printf("** something is probably wrong. **\n"); - printf("** Writing memory dump into memdump.xml **\n"); - printf("******************************************\n"); - printf("Please wait\n"); - - LeakFinderXmlOutput Output(L"memdump.xml"); - DumpUsedMemory(&Output); - - printf("\nMemory dump complete. Server will now abort.\n"); - abort(); - } - } - } - - InterlockedDecrement(&s_lMallocCalled); - // call the previous alloc hook - if (s_pfnOldCrtAllocHook != NULL) - s_pfnOldCrtAllocHook(nAllocType, pvData, nSize, nBlockUse, lRequest, szFileName, nLine); - return TRUE; // allow the memory operation to proceed -} // MyAllocHook - -#endif // _DEBUG - - - - - -// ########################################################################## -// ########################################################################## -// ########################################################################## -// Init/Deinit functions - -HRESULT InitLeakFinder() -{ - #ifdef _DEBUG - g_pCRTTable = new CRTTable(); - #endif - return S_OK; -} - - - - - -void DumpUsedMemory(LeakFinderOutput * output) -{ - LeakFinderOutput *pLeakFinderOutput = output; - - #ifdef _DEBUG - g_pCRTTable->Disable(); - #endif - - if (pLeakFinderOutput == NULL) - { - pLeakFinderOutput = new LeakFinderOutput(); - } - - // explicitly load the modules: - pLeakFinderOutput->LoadModules(); - - #ifdef _DEBUG - g_pCRTTable->ShowLeaks(*pLeakFinderOutput); - #endif - - if (output == NULL) - { - delete pLeakFinderOutput; - } -} - - - - - -void DeinitLeakFinder(LeakFinderOutput *output) -{ - DumpUsedMemory(output); - - #ifdef _DEBUG - delete g_pCRTTable; - g_pCRTTable = NULL; - #endif -} - - - - - -void DeinitLeakFinder() -{ - DeinitLeakFinder(NULL); -} - - - - |