X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d18700787fa19f11b54c3cc9dfe735cca1925422..badea317077a1bddca31b76cbd855f0cd3ed4fb5:/src/common/object.cpp diff --git a/src/common/object.cpp b/src/common/object.cpp index 96f54f4277..0289fc2ec6 100644 --- a/src/common/object.cpp +++ b/src/common/object.cpp @@ -1,138 +1,192 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: object.cpp +// Name: src/common/object.cpp // Purpose: wxObject implementation // Author: Julian Smart // Modified by: Ron Lee // Created: 04/01/98 // RCS-ID: $Id$ -// Copyright: (c) 1998 Julian Smart and Markus Holzem +// Copyright: (c) 1998 Julian Smart // (c) 2001 Ron Lee -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "object.h" -#endif - - // For compilers that support precompilation, includes "wx.h". - +// For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif #ifndef WX_PRECOMP -#include "wx/hash.h" + #include "wx/object.h" + #include "wx/hash.h" + #include "wx/memory.h" #endif #include -#include - -#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT -#include "wx/memory.h" -#endif #if defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT - // for wxObject::Dump -#include "wx/ioswrap.h" + #if defined(__VISAGECPP__) + #define DEBUG_PRINTF(NAME) { static int raz=0; \ + printf( #NAME " %i\n",raz); fflush(stdout); raz++; } + #else + #define DEBUG_PRINTF(NAME) + #endif +#endif // __WXDEBUG__ || wxUSE_DEBUG_CONTEXT + +// we must disable optimizations for VC.NET because otherwise its too eager +// linker discards wxClassInfo objects in release build thus breaking many, +// many things +#if defined __VISUALC__ && __VISUALC__ >= 1300 + #pragma optimize("", off) +#endif -#if defined(__VISAGECPP__) -#define DEBUG_PRINTF(NAME) { static int raz=0; \ - printf( #NAME " %i\n",raz); fflush(stdout); raz++; } +#if wxUSE_EXTENDED_RTTI +const wxClassInfo* wxObject::ms_classParents[] = { NULL } ; + wxObject* wxVariantToObjectConverterwxObject ( wxxVariant &data ) +{ return data.wxTEMPLATED_MEMBER_CALL(Get , wxObject*) ; } + wxObject* wxVariantOfPtrToObjectConverterwxObject ( wxxVariant &data ) +{ return &data.wxTEMPLATED_MEMBER_CALL(Get , wxObject) ; } + wxxVariant wxObjectToVariantConverterwxObject ( wxObject *data ) + { return wxxVariant( dynamic_cast (data) ) ; } + wxClassInfo wxObject::ms_classInfo(ms_classParents , wxEmptyString , wxT("wxObject"), + (int) sizeof(wxObject), \ + (wxObjectConstructorFn) 0 , + (wxPropertyInfo*) NULL,(wxHandlerInfo*) NULL,0 , 0 , + 0 , wxVariantOfPtrToObjectConverterwxObject , wxVariantToObjectConverterwxObject , wxObjectToVariantConverterwxObject); + template<> void wxStringReadValue(const wxString & , wxObject * & ){assert(0) ;} + template<> void wxStringWriteValue(wxString & , wxObject* const & ){assert(0) ;} + template<> void wxStringReadValue(const wxString & , wxObject & ){assert(0) ;} + template<> void wxStringWriteValue(wxString & , wxObject const & ){assert(0) ;} + wxClassTypeInfo s_typeInfo(wxT_OBJECT_PTR , &wxObject::ms_classInfo , NULL , NULL , typeid(wxObject*).name() ) ; + wxClassTypeInfo s_typeInfowxObject(wxT_OBJECT , &wxObject::ms_classInfo , NULL , NULL , typeid(wxObject).name() ) ; #else -#define DEBUG_PRINTF(NAME) +wxClassInfo wxObject::ms_classInfo( wxT("wxObject"), 0, 0, + (int) sizeof(wxObject), + (wxObjectConstructorFn) 0 ); #endif +// restore optimizations +#if defined __VISUALC__ && __VISUALC__ >= 1300 + #pragma optimize("", on) #endif - -wxClassInfo wxObject::sm_classwxObject( wxT("wxObject"), 0, 0, - (int) sizeof(wxObject), - (wxObjectConstructorFn) 0 ); -wxClassInfo* wxClassInfo::sm_first = 0; -wxHashTable* wxClassInfo::sm_classTable = 0; +wxClassInfo* wxClassInfo::sm_first = NULL; +wxHashTable* wxClassInfo::sm_classTable = NULL; - // These are here so we can avoid 'always true/false' warnings - // by referring to these instead of TRUE/FALSE +// when using XTI, this method is already implemented inline inside +// DECLARE_DYNAMIC_CLASS but otherwise we intentionally make this function +// non-inline because this allows us to have a non-inline virtual function in +// all wx classes and this solves linking problems for HP-UX native toolchain +// and possibly others (we could make dtor non-inline as well but it's more +// useful to keep it inline than this function) +#if !wxUSE_EXTENDED_RTTI -const bool wxTrue = TRUE; -const bool wxFalse = FALSE; +wxClassInfo *wxObject::GetClassInfo() const +{ + return &wxObject::ms_classInfo; +} + +#endif // wxUSE_EXTENDED_RTTI - // Is this object a kind of (a subclass of) 'info'? - // E.g. is wxWindow a kind of wxObject? - // Go from this class to superclass, taking into account - // two possible base classes. +// this variable exists only so that we can avoid 'always true/false' warnings +const bool wxFalse = false; +// Is this object a kind of (a subclass of) 'info'? +// E.g. is wxWindow a kind of wxObject? +// Go from this class to superclass, taking into account +// two possible base classes. bool wxObject::IsKindOf(wxClassInfo *info) const { wxClassInfo *thisInfo = GetClassInfo(); - return (thisInfo) ? thisInfo->IsKindOf(info) : FALSE ; + return (thisInfo) ? thisInfo->IsKindOf(info) : false ; } -#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) -void wxObject::Dump(wxSTD ostream& str) -{ - if (GetClassInfo() && GetClassInfo()->GetClassName()) - str << GetClassInfo()->GetClassName(); - else - str << "unknown object class"; -} +#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING && defined( new ) + #undef new #endif -#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING -#ifdef new -#undef new -#endif - -void *wxObject::operator new (size_t size, wxChar *fileName, int lineNum) +#ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT +void *wxObject::operator new ( size_t size, const wxChar *fileName, int lineNum ) { - return wxDebugAlloc(size, fileName, lineNum, TRUE); + return wxDebugAlloc(size, (wxChar*) fileName, lineNum, true); } +#endif -#ifndef __VISAGECPP__ -void wxObject::operator delete (void *buf) +#ifdef _WX_WANT_DELETE_VOID +void wxObject::operator delete ( void *buf ) { wxDebugFree(buf); } -#elif __DEBUG_ALLOC__ -void wxObject::operator delete (void *buf, const char *_fname, size_t _line) +#endif + +#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET +void wxObject::operator delete ( void *buf, const char *_fname, size_t _line ) { wxDebugFree(buf); } #endif - // VC++ 6.0 - -#if defined(__VISUALC__) && (__VISUALC__ >= 1200) -void wxObject::operator delete(void *pData, wxChar *WXUNUSED(fileName), int WXUNUSED(lineNum)) +#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT +void wxObject::operator delete ( void *buf, const wxChar *WXUNUSED(fileName), int WXUNUSED(lineNum) ) { - ::operator delete(pData); + wxDebugFree(buf); } #endif - // Cause problems for VC++ - crashes - -#if (!defined(__VISUALC__) && wxUSE_ARRAY_MEMORY_OPERATORS ) || defined(__MWERKS__) -void *wxObject::operator new[] (size_t size, wxChar *fileName, int lineNum) +#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT +void *wxObject::operator new[] ( size_t size, const wxChar* fileName, int lineNum ) { - return wxDebugAlloc(size, fileName, lineNum, TRUE, TRUE); + return wxDebugAlloc(size, (wxChar*) fileName, lineNum, true, true); } +#endif -void wxObject::operator delete[] (void *buf) +#ifdef _WX_WANT_ARRAY_DELETE_VOID +void wxObject::operator delete[] ( void *buf ) { - wxDebugFree(buf, TRUE); + wxDebugFree(buf, true); } #endif -#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING +#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT +void wxObject::operator delete[] (void * buf, const wxChar* WXUNUSED(fileName), int WXUNUSED(lineNum) ) +{ + wxDebugFree(buf, true); +} +#endif // ---------------------------------------------------------------------------- // wxClassInfo // ---------------------------------------------------------------------------- +wxClassInfo::~wxClassInfo() +{ + // remove this object from the linked list of all class infos: if we don't + // do it, loading/unloading a DLL containing static wxClassInfo objects is + // not going to work + if ( this == sm_first ) + { + sm_first = m_next; + } + else + { + wxClassInfo *info = sm_first; + while (info) + { + if ( info->m_next == this ) + { + info->m_next = m_next; + break; + } + + info = info->m_next; + } + } + Unregister(); +} + wxClassInfo *wxClassInfo::FindClass(const wxChar *className) { if ( sm_classTable ) @@ -151,77 +205,103 @@ wxClassInfo *wxClassInfo::FindClass(const wxChar *className) } } - // Set pointers to base class(es) to speed up IsKindOf +// This function wasn't written to be reentrant but there is a possiblity of +// reentrance if something it does causes a shared lib to load and register +// classes. On Solaris this happens when the wxHashTable is newed, so the first +// part of the function has been modified to handle it, and a wxASSERT checks +// against reentrance in the remainder of the function. -void wxClassInfo::InitializeClasses() +void wxClassInfo::Register() { - // using IMPLEMENT_DYNAMIC_CLASS() macro twice (which may happen if you - // link any object module twice mistakenly) will break this function - // because it will enter an infinite loop and eventually die with "out of - // memory" - as this is quite hard to detect if you're unaware of this, - // try to do some checks here + if ( !sm_classTable ) + { + wxHashTable *classTable = new wxHashTable(wxKEY_STRING); + + // check for reentrance + if ( sm_classTable ) + delete classTable; + else + sm_classTable = classTable; + } #ifdef __WXDEBUG__ - static const size_t nMaxClasses = 10000; // more than we'll ever have - size_t nClass = 0; + // reentrance guard - see note above + static int entry = 0; + wxASSERT_MSG(++entry == 1, _T("wxClassInfo::Register() reentrance")); #endif - wxClassInfo::sm_classTable = new wxHashTable(wxKEY_STRING); + // Using IMPLEMENT_DYNAMIC_CLASS() macro twice (which may happen if you + // link any object module twice mistakenly, or link twice against wx shared + // library) will break this function because it will enter an infinite loop + // and eventually die with "out of memory" - as this is quite hard to + // detect if you're unaware of this, try to do some checks here. + wxASSERT_MSG( sm_classTable->Get(m_className) == NULL, + wxString::Format + ( + _T("Class \"%s\" already in RTTI table - have you used IMPLEMENT_DYNAMIC_CLASS() multiple times or linked some object file twice)?"), + m_className + ) + ); + + sm_classTable->Put(m_className, (wxObject *)this); - // Index all class infos by their class name +#ifdef __WXDEBUG__ + --entry; +#endif +} - wxClassInfo *info; - for(info = sm_first; info; info = info->m_next) +void wxClassInfo::Unregister() +{ + if ( sm_classTable ) { - if (info->m_className) + sm_classTable->Delete(m_className); + if ( sm_classTable->GetCount() == 0 ) { - wxASSERT_MSG( ++nClass < nMaxClasses, - _T("an infinite loop detected - have you used IMPLEMENT_DYNAMIC_CLASS() twice (may be by linking some object module(s) twice)?") ); - sm_classTable->Put(info->m_className, (wxObject *)info); + delete sm_classTable; + sm_classTable = NULL; } } - - // Set base pointers for each wxClassInfo - - for(info = sm_first; info; info = info->m_next) - { - if (info->GetBaseClassName1()) - info->m_baseInfo1 = (wxClassInfo *)sm_classTable->Get(info->GetBaseClassName1()); - if (info->GetBaseClassName2()) - info->m_baseInfo2 = (wxClassInfo *)sm_classTable->Get(info->GetBaseClassName2()); - } -} - -void wxClassInfo::CleanUpClasses() -{ - delete wxClassInfo::sm_classTable; - wxClassInfo::sm_classTable = 0; } - wxObject *wxCreateDynamicObject(const wxChar *name) { #if defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT - DEBUG_PRINTF(wxObject *wxCreateDynamicObject) + DEBUG_PRINTF(wxObject *wxCreateDynamicObject) #endif - if (wxClassInfo::sm_classTable) + if ( wxClassInfo::sm_classTable ) { wxClassInfo *info = (wxClassInfo *)wxClassInfo::sm_classTable->Get(name); - return info != 0 ? info->CreateObject() : 0; + return info ? info->CreateObject() : NULL; } - else + else // no sm_classTable yet { - for(wxClassInfo *info = wxClassInfo::sm_first; info; info = info->m_next) + for ( wxClassInfo *info = wxClassInfo::sm_first; + info; + info = info->m_next ) + { if (info->m_className && wxStrcmp(info->m_className, name) == 0) return info->CreateObject(); - return 0; + } + + return NULL; } } // ---------------------------------------------------------------------------- -// wxClassInfo +// wxObjectRefData +// ---------------------------------------------------------------------------- + +void wxObjectRefData::DecRef() +{ + if ( --m_count == 0 ) + delete this; +} + + +// ---------------------------------------------------------------------------- +// wxObject // ---------------------------------------------------------------------------- void wxObject::Ref(const wxObject& clone) @@ -230,6 +310,10 @@ void wxObject::Ref(const wxObject& clone) DEBUG_PRINTF(wxObject::Ref) #endif + // nothing to be done + if (m_refData == clone.m_refData) + return; + // delete reference to old data UnRef(); @@ -237,7 +321,7 @@ void wxObject::Ref(const wxObject& clone) if ( clone.m_refData ) { m_refData = clone.m_refData; - ++(m_refData->m_count); + m_refData->IncRef(); } } @@ -247,8 +331,7 @@ void wxObject::UnRef() { wxASSERT_MSG( m_refData->m_count > 0, _T("invalid ref data count") ); - if ( !--m_refData->m_count ) - delete m_refData; + m_refData->DecRef(); m_refData = NULL; } } @@ -262,7 +345,7 @@ void wxObject::AllocExclusive() else if ( m_refData->GetRefCount() > 1 ) { // note that ref is not going to be destroyed in this case - wxObjectRefData* ref = m_refData; + const wxObjectRefData* ref = m_refData; UnRef(); // ... so we can still access it @@ -282,39 +365,11 @@ wxObjectRefData *wxObject::CreateRefData() const return NULL; } -wxObjectRefData *wxObject::CloneRefData(wxObjectRefData * WXUNUSED(data)) const +wxObjectRefData * +wxObject::CloneRefData(const wxObjectRefData * WXUNUSED(data)) const { // if you use AllocExclusive() you must override this method wxFAIL_MSG( _T("CloneRefData() must be overridden if called!") ); return NULL; } - -// ---------------------------------------------------------------------------- -// misc -// ---------------------------------------------------------------------------- - -#if defined(__DARWIN__) && defined(DYLIB_INIT) - -extern "C" { - void __initialize_Cplusplus(void); - void wxWindowsDylibInit(void); -}; - - // Dynamic shared library (dylib) initialization routine - // required to initialize static C++ objects bacause of lazy dynamic linking - // http://developer.apple.com/techpubs/macosx/Essentials/ - // SystemOverview/Frameworks/Dynamic_Shared_Libraries.html - -void wxWindowsDylibInit() -{ - // The function __initialize_Cplusplus() must be called from the shared - // library initialization routine to cause the static C++ objects in - // the library to be initialized (reference number 2441683). - - __initialize_Cplusplus(); -} - -#endif - -// vi:sts=4:sw=4:et