X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/86b3203fb156247bae38d7c67a3a00fe27c5db11..c7db82dced50cce6ac8440a442a8fd3f6e25c2ab:/src/common/memory.cpp

diff --git a/src/common/memory.cpp b/src/common/memory.cpp
index 5b93f2b37c..9bf20f536b 100644
--- a/src/common/memory.cpp
+++ b/src/common/memory.cpp
@@ -1,51 +1,43 @@
 /////////////////////////////////////////////////////////////////////////////
-// 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
-#endif
-
-#ifndef WX_PRECOMP
-#include "wx/defs.h"
+    #pragma hdrstop
 #endif
 
 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 
-#ifdef __GNUG__
-// #pragma implementation
-#endif
+#include "wx/memory.h"
 
 #ifndef WX_PRECOMP
-#include "wx/utils.h"
-#include "wx/app.h"
+    #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
+
+#if wxUSE_THREADS
+    #include "wx/thread.h"
 #endif
 
-#include "wx/log.h"
 #include <stdlib.h>
 
 #include "wx/ioswrap.h"
 
-#if wxUSE_IOSTREAMH
-    #include <fstream.h>
-#else
-    #include <fstream>
-#endif
-
 #if !defined(__WATCOMC__) && !(defined(__VMS__) && ( __VMS_VER < 70000000 ) )\
      && !defined( __MWERKS__ ) && !defined(__SALFORDC__)
 #include <memory.h>
@@ -54,20 +46,12 @@
 #include <stdarg.h>
 #include <string.h>
 
-#ifdef __WXMSW__
-#include <windows.h>
-
-#ifdef GetClassInfo
-#undef GetClassInfo
-#endif
-
-#ifdef GetClassName
-#undef GetClassName
-#endif
-
+#if wxUSE_THREADS && defined(__WXDEBUG__)
+#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;
 }
 
 
@@ -330,7 +310,7 @@ 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 +321,20 @@ 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 +349,7 @@ 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 +366,22 @@ 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);
   }
   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);
   }
 }
 
@@ -461,16 +441,10 @@ 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
@@ -480,76 +454,12 @@ int wxDebugContext::m_balignmask = (int)((char *)&markerCalc[1] - (char*)&marker
 
 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 +525,13 @@ size_t wxDebugContext::PaddedSize (const size_t size)
 {
     // Added by Terry Farnham <TJRT@pacbell.net> to replace
     // slow GetPadding call.
-	int padb;
-
-	padb = size & m_balignmask;
-	if(padb)
-		return(size + m_balign - padb);
-	else
-		return(size);
+    int padb;
 
-// Old (slow) code
-#if 0
-    return size + GetPadding (size);
-#endif
+    padb = size & m_balignmask;
+    if(padb)
+        return(size + m_balign - padb);
+    else
+        return(size);
 }
 
 /*
@@ -668,49 +573,44 @@ 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));
 
-  return TRUE;
+  return true;
 #else
-  return FALSE;
+  return false;
 #endif
 }
 
 bool wxDebugContext::Dump(void)
 {
 #ifdef __WXDEBUG__
-//  if (!HasStream())
-//    return FALSE;
-
-//  if (TRUE)
   {
-    wxChar* appName = wxT("application");
-    wxString appNameStr("");
+    wxChar* appName = (wxChar*) wxT("application");
+    wxString appNameStr;
     if (wxTheApp)
     {
         appNameStr = wxTheApp->GetAppName();
         appName = WXSTRINGCAST appNameStr;
-        wxLogMessage(wxT("----- Memory dump of %s at %s -----"), appName, WXSTRINGCAST wxNow() );
+        OutputDumpLine(wxT("----- Memory dump of %s at %s -----"), appName, WXSTRINGCAST wxNow() );
     }
     else
     {
-      wxLogMessage( wxT("----- Memory dump -----") );
+      OutputDumpLine( wxT("----- Memory dump -----") );
     }
   }
+
   TraverseList ((PmSFV)&wxMemStruct::Dump, (checkPoint ? checkPoint->m_next : (wxMemStruct*)NULL));
 
-  wxLogMessage( wxT("") );
-  wxLogMessage( wxT("") );
+  OutputDumpLine(wxEmptyString);
+  OutputDumpLine(wxEmptyString);
 
-  return TRUE;
+  return true;
 #else
-  return FALSE;
+  return false;
 #endif
 }
 
+#ifdef __WXDEBUG__
 struct wxDebugStatsStruct
 {
   long instanceCount;
@@ -735,31 +635,28 @@ static wxDebugStatsStruct *InsertStatsStruct(wxDebugStatsStruct *head, wxDebugSt
   st->next = head;
   return st;
 }
+#endif
 
 bool wxDebugContext::PrintStatistics(bool detailed)
 {
 #ifdef __WXDEBUG__
-//  if (!HasStream())
-//    return FALSE;
-
-//  if (TRUE)
   {
-    wxChar* appName = wxT("application");
-    wxString appNameStr(wxT(""));
+    wxChar* appName = (wxChar*) wxT("application");
+    wxString appNameStr;
     if (wxTheApp)
     {
         appNameStr = wxTheApp->GetAppName();
         appName = WXSTRINGCAST appNameStr;
-        wxLogMessage(wxT("----- Memory statistics of %s at %s -----"), appName, WXSTRINGCAST wxNow() );
+        OutputDumpLine(wxT("----- Memory statistics of %s at %s -----"), appName, WXSTRINGCAST wxNow() );
     }
     else
     {
-      wxLogMessage( wxT("----- Memory statistics -----") );
+      OutputDumpLine( wxT("----- Memory statistics -----") );
     }
   }
 
   bool currentMode = GetDebugMode();
-  SetDebugMode(FALSE);
+  SetDebugMode(false);
 
   long noNonObjectNodes = 0;
   long noObjectNodes = 0;
@@ -775,15 +672,14 @@ 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 +694,6 @@ 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();
@@ -813,38 +708,35 @@ 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;
+  return true;
 #else
-  return FALSE;
+  (void)detailed;
+  return false;
 #endif
 }
 
 bool wxDebugContext::PrintClasses(void)
 {
-//  if (!HasStream())
-//    return FALSE;
-
-//  if (TRUE)
   {
-    wxChar* appName = wxT("application");
-    wxString appNameStr(wxT(""));
+    wxChar* appName = (wxChar*) wxT("application");
+    wxString appNameStr;
     if (wxTheApp)
     {
         appNameStr = wxTheApp->GetAppName();
@@ -854,14 +746,13 @@ bool wxDebugContext::PrintClasses(void)
   }
 
   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 +775,13 @@ 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)
@@ -937,7 +827,6 @@ 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 +834,110 @@ 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[sizeof(buf)/sizeof(wxChar)-1] = _T('\0');
+
+    // keep 3 bytes for a \r\n\0
+    count = wxVsnprintf(buf, sizeof(buf)/sizeof(wxChar)-3, szFormat, argptr);
+
+    if ( count < 0 )
+        count = sizeof(buf)/sizeof(wxChar)-3;
+    buf[count]=_T('\r');
+    buf[count+1]=_T('\n');
+    buf[count+2]=_T('\0');
+
+    wxMessageOutputDebug dbgout;
+    dbgout.Printf(buf);
+}
+
+
+#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
+
+
+#ifdef __WXDEBUG__
+#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 +994,10 @@ 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 +1038,13 @@ 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);
 }
 
+#endif // __WXDEBUG__
+
 // 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 +1081,7 @@ 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 +1120,27 @@ 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
+//----------------------------------------------------------------------------
 
-void wxTraceLevel(int WXUNUSED(level), const char *WXUNUSED(fmt) ...)
+// 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;
+
+void wxDebugContextDumpDelayCounter::DoDump()
 {
+    if (wxDebugContext::CountObjectsLeft(true) > 0)
+    {
+        wxDebugContext::OutputDumpLine(wxT("There were memory leaks.\n"));
+        wxDebugContext::Dump();
+        wxDebugContext::PrintStatistics();
+    }
 }
-#endif
 
+// Even if there is nothing else, make sure that there is at
+// least one cleanup counter object
+static wxDebugContextDumpDelayCounter wxDebugContextDumpDelayCounter_One;
+
+#endif // (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT