X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/86b3203fb156247bae38d7c67a3a00fe27c5db11..783d8c1131679d4032266ea7913e95a756808e8f:/src/common/memory.cpp diff --git a/src/common/memory.cpp b/src/common/memory.cpp index 5b93f2b37c..4253bae38e 100644 --- a/src/common/memory.cpp +++ b/src/common/memory.cpp @@ -1,73 +1,57 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: memory.cpp +// Name: src/common/memory.cpp // Purpose: Memory checking implementation // Author: Arthur Seaton, Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Copyright: (c) Julian Smart +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "memory.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif -#ifndef WX_PRECOMP -#include "wx/defs.h" -#endif +#if wxUSE_MEMORY_TRACING || wxUSE_DEBUG_CONTEXT -#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT +#include "wx/memory.h" -#ifdef __GNUG__ -// #pragma implementation +#ifndef WX_PRECOMP + #ifdef __WXMSW__ + #include "wx/msw/wrapwin.h" + #endif + #include "wx/utils.h" + #include "wx/app.h" + #include "wx/hash.h" + #include "wx/log.h" #endif -#ifndef WX_PRECOMP -#include "wx/utils.h" -#include "wx/app.h" +#if wxUSE_THREADS + #include "wx/thread.h" #endif -#include "wx/log.h" #include #include "wx/ioswrap.h" -#if wxUSE_IOSTREAMH - #include -#else - #include -#endif - #if !defined(__WATCOMC__) && !(defined(__VMS__) && ( __VMS_VER < 70000000 ) )\ - && !defined( __MWERKS__ ) && !defined(__SALFORDC__) + && !defined( __MWERKS__ ) #include #endif #include #include -#ifdef __WXMSW__ -#include - -#ifdef GetClassInfo -#undef GetClassInfo -#endif - -#ifdef GetClassName -#undef GetClassName -#endif - +#if wxUSE_THREADS +#define USE_THREADSAFE_MEMORY_ALLOCATION 1 +#else +#define USE_THREADSAFE_MEMORY_ALLOCATION 0 #endif -#include "wx/memory.h" #ifdef new #undef new @@ -111,10 +95,8 @@ */ void wxMemStruct::ErrorMsg (const char * mesg) { - wxLogMessage(wxT("wxWindows memory checking error: %s"), mesg); + wxLogMessage(wxT("wxWidgets memory checking error: %s"), mesg); PrintNode (); - -// << m_fileName << ' ' << m_lineNum << endl; } /* @@ -122,10 +104,8 @@ void wxMemStruct::ErrorMsg (const char * mesg) */ void wxMemStruct::ErrorMsg () { - wxLogMessage(wxT("wxWindows over/underwrite memory error:")); + wxLogMessage(wxT("wxWidgets over/underwrite memory error:")); PrintNode (); - -// cerr << m_fileName << ' ' << m_lineNum << endl; } @@ -138,8 +118,9 @@ void wxMemStruct::ErrorMsg () */ int wxMemStruct::AssertList () { - if (wxDebugContext::GetHead () != 0 && ! (wxDebugContext::GetHead ())->AssertIt () || - wxDebugContext::GetTail () != 0 && ! wxDebugContext::GetTail ()->AssertIt ()) { + if ((wxDebugContext::GetHead() && !wxDebugContext::GetHead()->AssertIt()) || + (wxDebugContext::GetTail() && !wxDebugContext::GetTail()->AssertIt())) + { ErrorMsg ("Head or tail pointers trashed"); return 0; } @@ -330,7 +311,7 @@ void wxMemStruct::PrintNode () // Let's put this in standard form so IDEs can load the file at the appropriate // line - wxString msg(wxT("")); + wxString msg; if (m_fileName) msg.Printf(wxT("%s(%d): "), m_fileName, (int)m_lineNum); @@ -341,20 +322,20 @@ void wxMemStruct::PrintNode () msg += wxT("object"); wxString msg2; - msg2.Printf(wxT(" at $%lX, size %d"), (long)GetActualData(), (int)RequestSize()); + msg2.Printf(wxT(" at 0x%lX, size %d"), (long)GetActualData(), (int)RequestSize()); msg += msg2; wxLogMessage(msg); } else { - wxString msg(""); + wxString msg; if (m_fileName) msg.Printf(wxT("%s(%d): "), m_fileName, (int)m_lineNum); msg += wxT("non-object data"); wxString msg2; - msg2.Printf(wxT(" at $%lX, size %d\n"), (long)GetActualData(), (int)RequestSize()); + msg2.Printf(wxT(" at 0x%lX, size %d\n"), (long)GetActualData(), (int)RequestSize()); msg += msg2; wxLogMessage(msg); @@ -369,7 +350,7 @@ void wxMemStruct::Dump () { wxObject *obj = (wxObject *)m_actualData; - wxString msg(wxT("")); + wxString msg; if (m_fileName) msg.Printf(wxT("%s(%d): "), m_fileName, (int)m_lineNum); @@ -386,22 +367,22 @@ void wxMemStruct::Dump () else msg += wxT("unknown object class"); - wxString msg2(""); - msg2.Printf(wxT(" at $%lX, size %d"), (long)GetActualData(), (int)RequestSize()); + wxString msg2; + msg2.Printf(wxT(" at 0x%lX, size %d"), (long)GetActualData(), (int)RequestSize()); msg += msg2; - wxLogMessage(msg); + wxDebugContext::OutputDumpLine(msg.c_str()); } else { - wxString msg(wxT("")); + wxString msg; if (m_fileName) msg.Printf(wxT("%s(%d): "), m_fileName, (int)m_lineNum); - wxString msg2(""); - msg2.Printf(wxT("non-object data at $%lX, size %d"), (long)GetActualData(), (int)RequestSize() ); + wxString msg2; + msg2.Printf(wxT("non-object data at 0x%lX, size %d"), (long)GetActualData(), (int)RequestSize() ); msg += msg2; - wxLogMessage(msg); + wxDebugContext::OutputDumpLine(msg.c_str()); } } @@ -461,16 +442,10 @@ int wxMemStruct::ValidateNode () wxMemStruct *wxDebugContext::m_head = NULL; wxMemStruct *wxDebugContext::m_tail = NULL; -// ostream *wxDebugContext::m_debugStream = NULL; -// streambuf *wxDebugContext::m_streamBuf = NULL; - -// Must initialise these in wxEntry, and then delete them just before wxEntry exits -streambuf *wxDebugContext::m_streamBuf = NULL; -ostream *wxDebugContext::m_debugStream = NULL; -bool wxDebugContext::m_checkPrevious = FALSE; +bool wxDebugContext::m_checkPrevious = false; int wxDebugContext::debugLevel = 1; -bool wxDebugContext::debugOn = TRUE; +bool wxDebugContext::debugOn = true; wxMemStruct *wxDebugContext::checkPoint = NULL; // For faster alignment calculation @@ -478,78 +453,17 @@ static wxMarkerType markerCalc[2]; int wxDebugContext::m_balign = (int)((char *)&markerCalc[1] - (char*)&markerCalc[0]); int wxDebugContext::m_balignmask = (int)((char *)&markerCalc[1] - (char*)&markerCalc[0]) - 1; +// Pointer to global function to call at shutdown +wxShutdownNotifyFunction wxDebugContext::sm_shutdownFn; + wxDebugContext::wxDebugContext(void) { -// m_streamBuf = new wxDebugStreamBuf; -// m_debugStream = new ostream(m_streamBuf); } wxDebugContext::~wxDebugContext(void) { - SetStream(NULL, NULL); } -/* - * It's bizarre, but with BC++ 4.5, the value of str changes - * between SetFile and SetStream. - */ - -void wxDebugContext::SetStream(ostream *str, streambuf *buf) -{ - if (m_debugStream) - { - m_debugStream->flush(); - delete m_debugStream; - } - m_debugStream = NULL; - - // Not allowed in Watcom (~streambuf is protected). - // Is this trying to say something significant to us?? -#ifndef __WATCOMC__ - if (m_streamBuf) - { - streambuf* oldBuf = m_streamBuf; - m_streamBuf = NULL; - delete oldBuf; - } -#endif - m_streamBuf = buf; - m_debugStream = str; -} - -bool wxDebugContext::SetFile(const wxString& file) -{ - ofstream *str = new ofstream(file.mb_str()); - - if (str->bad()) - { - delete str; - return FALSE; - } - else - { - SetStream(str); - return TRUE; - } -} - -bool wxDebugContext::SetStandardError(void) -{ - // Obsolete -#if 0 -#if !defined(_WINDLL) - wxDebugStreamBuf *buf = new wxDebugStreamBuf; - ostream *stream = new ostream(m_streamBuf); - SetStream(stream, buf); - return TRUE; -#else - return FALSE; -#endif -#endif - return FALSE; -} - - /* Work out the positions of the markers by creating an array of 2 markers and comparing the addresses of the 2 elements. Use this number as the @@ -615,18 +529,13 @@ size_t wxDebugContext::PaddedSize (const size_t size) { // Added by Terry Farnham to replace // slow GetPadding call. - int padb; + int padb; - padb = size & m_balignmask; - if(padb) - return(size + m_balign - padb); - else - return(size); - -// Old (slow) code -#if 0 - return size + GetPadding (size); -#endif + padb = size & m_balignmask; + if(padb) + return(size + m_balign - padb); + else + return(size); } /* @@ -667,48 +576,34 @@ void wxDebugContext::TraverseList (PmSFV func, wxMemStruct *from) */ bool wxDebugContext::PrintList (void) { -#ifdef __WXDEBUG__ -// if (!HasStream()) -// return FALSE; - - TraverseList ((PmSFV)&wxMemStruct::PrintNode, (checkPoint ? checkPoint->m_next : (wxMemStruct*)NULL)); + TraverseList ((PmSFV)&wxMemStruct::PrintNode, (checkPoint ? checkPoint->m_next : NULL)); - return TRUE; -#else - return FALSE; -#endif + return true; } bool wxDebugContext::Dump(void) { -#ifdef __WXDEBUG__ -// if (!HasStream()) -// return FALSE; - -// if (TRUE) { - wxChar* appName = wxT("application"); - wxString appNameStr(""); + const wxChar* appName = wxT("application"); + wxString appNameStr; if (wxTheApp) { appNameStr = wxTheApp->GetAppName(); - appName = WXSTRINGCAST appNameStr; - wxLogMessage(wxT("----- Memory dump of %s at %s -----"), appName, WXSTRINGCAST wxNow() ); + appName = appNameStr.c_str(); + OutputDumpLine(wxT("----- Memory dump of %s at %s -----"), appName, static_cast(wxNow().c_str())); } else { - wxLogMessage( wxT("----- Memory dump -----") ); + OutputDumpLine( wxT("----- Memory dump -----") ); } } - TraverseList ((PmSFV)&wxMemStruct::Dump, (checkPoint ? checkPoint->m_next : (wxMemStruct*)NULL)); - wxLogMessage( wxT("") ); - wxLogMessage( wxT("") ); + TraverseList ((PmSFV)&wxMemStruct::Dump, (checkPoint ? checkPoint->m_next : NULL)); - return TRUE; -#else - return FALSE; -#endif + OutputDumpLine(wxEmptyString); + OutputDumpLine(wxEmptyString); + + return true; } struct wxDebugStatsStruct @@ -738,28 +633,23 @@ static wxDebugStatsStruct *InsertStatsStruct(wxDebugStatsStruct *head, wxDebugSt bool wxDebugContext::PrintStatistics(bool detailed) { -#ifdef __WXDEBUG__ -// if (!HasStream()) -// return FALSE; - -// if (TRUE) { - wxChar* appName = wxT("application"); - wxString appNameStr(wxT("")); + const wxChar* appName = wxT("application"); + wxString appNameStr; if (wxTheApp) { appNameStr = wxTheApp->GetAppName(); - appName = WXSTRINGCAST appNameStr; - wxLogMessage(wxT("----- Memory statistics of %s at %s -----"), appName, WXSTRINGCAST wxNow() ); + appName = appNameStr.c_str(); + OutputDumpLine(wxT("----- Memory statistics of %s at %s -----"), appName, static_cast(wxNow().c_str())); } else { - wxLogMessage( wxT("----- Memory statistics -----") ); + OutputDumpLine( wxT("----- Memory statistics -----") ); } } bool currentMode = GetDebugMode(); - SetDebugMode(FALSE); + SetDebugMode(false); long noNonObjectNodes = 0; long noObjectNodes = 0; @@ -767,7 +657,7 @@ bool wxDebugContext::PrintStatistics(bool detailed) wxDebugStatsStruct *list = NULL; - wxMemStruct *from = (checkPoint ? checkPoint->m_next : (wxMemStruct*)NULL ); + wxMemStruct *from = (checkPoint ? checkPoint->m_next : NULL ); if (!from) from = wxDebugContext::GetHead (); @@ -775,15 +665,14 @@ bool wxDebugContext::PrintStatistics(bool detailed) for (st = from; st != 0; st = st->m_next) { void* data = st->GetActualData(); -// if (detailed && (data != (void*)m_debugStream) && (data != (void*) m_streamBuf)) - if (detailed && (data != (void*) wxLog::GetActiveTarget())) + if (detailed && (data != (void*) wxLog::GetActiveTarget())) { - wxChar *className = wxT("nonobject"); + wxChar *className = (wxChar*) wxT("nonobject"); if (st->m_isObject && st->GetActualData()) { wxObject *obj = (wxObject *)st->GetActualData(); if (obj->GetClassInfo()->GetClassName()) - className = obj->GetClassInfo()->GetClassName(); + className = (wxChar*)obj->GetClassInfo()->GetClassName(); } wxDebugStatsStruct *stats = FindStatsStruct(list, className); if (!stats) @@ -798,7 +687,6 @@ bool wxDebugContext::PrintStatistics(bool detailed) stats->totalSize += st->RequestSize(); } -// if ((data != (void*)m_debugStream) && (data != (void*) m_streamBuf)) if (data != (void*) wxLog::GetActiveTarget()) { totalSize += st->RequestSize(); @@ -813,55 +701,47 @@ bool wxDebugContext::PrintStatistics(bool detailed) { while (list) { - wxLogMessage(wxT("%ld objects of class %s, total size %ld"), + OutputDumpLine(wxT("%ld objects of class %s, total size %ld"), list->instanceCount, list->instanceClass, list->totalSize); wxDebugStatsStruct *old = list; list = old->next; free((char *)old); } - wxLogMessage(wxT("")); + OutputDumpLine(wxEmptyString); } SetDebugMode(currentMode); - wxLogMessage(wxT("Number of object items: %ld"), noObjectNodes); - wxLogMessage(wxT("Number of non-object items: %ld"), noNonObjectNodes); - wxLogMessage(wxT("Total allocated size: %ld"), totalSize); - wxLogMessage(wxT("")); - wxLogMessage(wxT("")); + OutputDumpLine(wxT("Number of object items: %ld"), noObjectNodes); + OutputDumpLine(wxT("Number of non-object items: %ld"), noNonObjectNodes); + OutputDumpLine(wxT("Total allocated size: %ld"), totalSize); + OutputDumpLine(wxEmptyString); + OutputDumpLine(wxEmptyString); - return TRUE; -#else - return FALSE; -#endif + return true; } bool wxDebugContext::PrintClasses(void) { -// if (!HasStream()) -// return FALSE; - -// if (TRUE) { - wxChar* appName = wxT("application"); - wxString appNameStr(wxT("")); + const wxChar* appName = wxT("application"); + wxString appNameStr; if (wxTheApp) { appNameStr = wxTheApp->GetAppName(); - appName = WXSTRINGCAST appNameStr; + appName = appNameStr.c_str(); wxLogMessage(wxT("----- Classes in %s -----"), appName); } } int n = 0; - wxNode *node; - wxClassInfo *info; + const wxClassInfo *info; - wxClassInfo::sm_classTable->BeginFind(); - node = wxClassInfo::sm_classTable->Next(); - while (node) + for (wxClassInfo::const_iterator node = wxClassInfo::begin_classinfo(), + end = wxClassInfo::end_classinfo(); + node != end; ++node) { - info = (wxClassInfo *)node->Data(); + info = *node; if (info->GetClassName()) { wxString msg(info->GetClassName()); @@ -884,14 +764,13 @@ bool wxDebugContext::PrintClasses(void) wxLogMessage(msg); } - node = wxClassInfo::sm_classTable->Next(); n ++; } - wxLogMessage(wxT("")); + wxLogMessage(wxEmptyString); wxLogMessage(wxT("There are %d classes derived from wxObject."), n); - wxLogMessage(wxT("")); - wxLogMessage(wxT("")); - return TRUE; + wxLogMessage(wxEmptyString); + wxLogMessage(wxEmptyString); + return true; } void wxDebugContext::SetCheckpoint(bool all) @@ -907,7 +786,7 @@ int wxDebugContext::Check(bool checkAll) { int nFailures = 0; - wxMemStruct *from = (checkPoint ? checkPoint->m_next : (wxMemStruct*)NULL ); + wxMemStruct *from = (checkPoint ? checkPoint->m_next : NULL ); if (!from || checkAll) from = wxDebugContext::GetHead (); @@ -937,7 +816,6 @@ int wxDebugContext::CountObjectsLeft(bool sinceCheckpoint) for (wxMemStruct * st = from; st != 0; st = st->m_next) { void* data = st->GetActualData(); -// if ((data != (void*)m_debugStream) && (data != (void*) m_streamBuf)) if (data != (void*) wxLog::GetActiveTarget()) n ++; } @@ -945,9 +823,114 @@ int wxDebugContext::CountObjectsLeft(bool sinceCheckpoint) return n ; } +// This function is used to output the dump +void wxDebugContext::OutputDumpLine(const wxChar *szFormat, ...) +{ + // a buffer of 2048 bytes should be long enough for a file name + // and a class name + wxChar buf[2048]; + int count; + va_list argptr; + va_start(argptr, szFormat); + buf[WXSIZEOF(buf)-1] = wxT('\0'); + + // keep 3 bytes for a \r\n\0 + count = wxVsnprintf(buf, WXSIZEOF(buf)-3, szFormat, argptr); + + if ( count < 0 ) + count = WXSIZEOF(buf)-3; + buf[count]=wxT('\r'); + buf[count+1]=wxT('\n'); + buf[count+2]=wxT('\0'); + + wxMessageOutputDebug dbgout; + dbgout.Printf(buf); +} + +void wxDebugContext::SetShutdownNotifyFunction(wxShutdownNotifyFunction shutdownFn) +{ + sm_shutdownFn = shutdownFn; +} + + +#if USE_THREADSAFE_MEMORY_ALLOCATION +static bool memSectionOk = false; + +class MemoryCriticalSection : public wxCriticalSection +{ +public: + MemoryCriticalSection() { + memSectionOk = true; + } + ~MemoryCriticalSection() { + memSectionOk = false; + } +}; + +class MemoryCriticalSectionLocker +{ +public: + inline MemoryCriticalSectionLocker(wxCriticalSection& critsect) + : m_critsect(critsect), m_locked(memSectionOk) { if(m_locked) m_critsect.Enter(); } + inline ~MemoryCriticalSectionLocker() { if(m_locked) m_critsect.Leave(); } + +private: + // no assignment operator nor copy ctor + MemoryCriticalSectionLocker(const MemoryCriticalSectionLocker&); + MemoryCriticalSectionLocker& operator=(const MemoryCriticalSectionLocker&); + + wxCriticalSection& m_critsect; + bool m_locked; +}; + +static MemoryCriticalSection memLocker; + +#endif // USE_THREADSAFE_MEMORY_ALLOCATION + + +#if !(defined(__WXMSW__) && (defined(WXUSINGDLL) || defined(WXMAKINGDLL_BASE))) +#if wxUSE_GLOBAL_MEMORY_OPERATORS +void * operator new (size_t size, wxChar * fileName, int lineNum) +{ + return wxDebugAlloc(size, fileName, lineNum, false, false); +} + +void * operator new (size_t size) +{ + return wxDebugAlloc(size, NULL, 0, false); +} + +void operator delete (void * buf) +{ + wxDebugFree(buf, false); +} + +#if wxUSE_ARRAY_MEMORY_OPERATORS +void * operator new[] (size_t size) +{ + return wxDebugAlloc(size, NULL, 0, false, true); +} + +void * operator new[] (size_t size, wxChar * fileName, int lineNum) +{ + return wxDebugAlloc(size, fileName, lineNum, false, true); +} + +void operator delete[] (void * buf) +{ + wxDebugFree(buf, true); +} +#endif // wxUSE_ARRAY_MEMORY_OPERATORS +#endif // wxUSE_GLOBAL_MEMORY_OPERATORS +#endif // !(defined(__WXMSW__) && (defined(WXUSINGDLL) || defined(WXMAKINGDLL_BASE))) + // TODO: store whether this is a vector or not. void * wxDebugAlloc(size_t size, wxChar * fileName, int lineNum, bool isObject, bool WXUNUSED(isVect) ) { +#if USE_THREADSAFE_MEMORY_ALLOCATION + MemoryCriticalSectionLocker lock(memLocker); +#endif + // If not in debugging allocation mode, do the normal thing // so we don't leave any trace of ourselves in the node list. @@ -1004,6 +987,10 @@ void * wxDebugAlloc(size_t size, wxChar * fileName, int lineNum, bool isObject, // TODO: check whether was allocated as a vector void wxDebugFree(void * buf, bool WXUNUSED(isVect) ) { +#if USE_THREADSAFE_MEMORY_ALLOCATION + MemoryCriticalSectionLocker lock(memLocker); +#endif + if (!buf) return; @@ -1044,14 +1031,11 @@ void wxDebugFree(void * buf, bool WXUNUSED(isVect) ) (void) memset (wxDebugContext::CallerMemPos (startPointer), MemFillChar, st->RequestSize ()); - // Don't allow delayed freeing of memory in this version -// if (!wxDebugContext::GetDelayFree()) -// free((void *)st); free((char *)st); } // Trace: send output to the current debugging stream -void wxTrace(const wxChar *fmt ...) +void wxTrace(const wxChar * ...) { #if 1 wxFAIL_MSG(wxT("wxTrace is now obsolete. Please use wxDebugXXX instead.")); @@ -1088,7 +1072,7 @@ void wxTrace(const wxChar *fmt ...) } // Trace with level -void wxTraceLevel(int level, const wxChar *fmt ...) +void wxTraceLevel(int, const wxChar * ...) { #if 1 wxFAIL_MSG(wxT("wxTrace is now obsolete. Please use wxDebugXXX instead.")); @@ -1127,13 +1111,43 @@ void wxTraceLevel(int level, const wxChar *fmt ...) #endif } -#else // wxUSE_MEMORY_TRACING && defined(__WXDEBUG__) -void wxTrace(const char *WXUNUSED(fmt) ...) +//---------------------------------------------------------------------------- +// Final cleanup after all global objects in all files have been destroyed +//---------------------------------------------------------------------------- + +// Don't set it to 0 by dynamic initialization +// Some compilers will really do the assignment later +// All global variables are initialized to 0 at the very beginning, and this is just fine. +int wxDebugContextDumpDelayCounter::sm_count; + +wxDebugContextDumpDelayCounter::wxDebugContextDumpDelayCounter() { + sm_count++; } -void wxTraceLevel(int WXUNUSED(level), const char *WXUNUSED(fmt) ...) +wxDebugContextDumpDelayCounter::~wxDebugContextDumpDelayCounter() { + if ( !--sm_count ) + { + // Notify app if we've been asked to do that + if( wxDebugContext::sm_shutdownFn ) + wxDebugContext::sm_shutdownFn(); + DoDump(); + } } -#endif +void wxDebugContextDumpDelayCounter::DoDump() +{ + if (wxDebugContext::CountObjectsLeft(true) > 0) + { + wxDebugContext::OutputDumpLine(wxT("There were memory leaks.\n")); + wxDebugContext::Dump(); + wxDebugContext::PrintStatistics(); + } +} + +// Even if there is nothing else, make sure that there is at +// least one cleanup counter object +static wxDebugContextDumpDelayCounter wxDebugContextDumpDelayCounter_One; + +#endif // wxUSE_MEMORY_TRACING || wxUSE_DEBUG_CONTEXT