X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cf760e4c30a0324f441989dbf8362c63472336ec..23621b352c80acbb252aa4ebddcf31829f62d4d7:/src/common/object.cpp diff --git a/src/common/object.cpp b/src/common/object.cpp index c091b0c681..0a77aab57b 100644 --- a/src/common/object.cpp +++ b/src/common/object.cpp @@ -5,36 +5,27 @@ // 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". #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 -#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++; } @@ -43,18 +34,63 @@ #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 -wxClassInfo wxObject::sm_classwxObject( wxT("wxObject"), 0, 0, +#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 +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* 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 -const bool wxTrue = TRUE; -const bool wxFalse = 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 + +wxClassInfo *wxObject::GetClassInfo() const +{ + return &wxObject::ms_classInfo; +} + +#endif // wxUSE_EXTENDED_RTTI + +// 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? @@ -63,30 +99,18 @@ const bool wxFalse = FALSE; bool wxObject::IsKindOf(wxClassInfo *info) const { wxClassInfo *thisInfo = GetClassInfo(); - 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 << _T("unknown object class"); + return (thisInfo) ? thisInfo->IsKindOf(info) : false ; } -#endif - #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING && defined( new ) - #undef new + #undef new #endif - #ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT void *wxObject::operator new ( size_t size, const wxChar *fileName, int lineNum ) { - return wxDebugAlloc(size, (wxChar*) fileName, lineNum, TRUE); + return wxDebugAlloc(size, (wxChar*) fileName, lineNum, true); } #endif @@ -114,21 +138,21 @@ void wxObject::operator delete ( void *buf, const wxChar *WXUNUSED(fileName), in #ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT void *wxObject::operator new[] ( size_t size, const wxChar* fileName, int lineNum ) { - return wxDebugAlloc(size, (wxChar*) fileName, lineNum, TRUE, TRUE); + return wxDebugAlloc(size, (wxChar*) fileName, lineNum, true, true); } #endif #ifdef _WX_WANT_ARRAY_DELETE_VOID void wxObject::operator delete[] ( void *buf ) { - wxDebugFree(buf, TRUE); + wxDebugFree(buf, true); } #endif #ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT void wxObject::operator delete[] (void * buf, const wxChar* WXUNUSED(fileName), int WXUNUSED(lineNum) ) { - wxDebugFree(buf, TRUE); + wxDebugFree(buf, true); } #endif @@ -137,6 +161,32 @@ void wxObject::operator delete[] (void * buf, const wxChar* WXUNUSED(fileName), // 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 ) @@ -155,71 +205,64 @@ wxClassInfo *wxClassInfo::FindClass(const wxChar *className) } } -// a tiny InitializeClasses() helper -/* static */ -inline wxClassInfo *wxClassInfo::GetBaseByName(const wxChar *name) -{ - if ( !name ) - return NULL; - - wxClassInfo *classInfo = (wxClassInfo *)sm_classTable->Get(name); - - // this must be fixed, other things risk work wrongly later if you get this - wxASSERT_MSG( classInfo, - wxString::Format - ( - _T("base class '%s' is unknown to wxWindows RTTI"), - name - ) ); +// 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. - return classInfo; -} - -// Set pointers to base class(es) to speed up IsKindOf -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) - { - info->m_baseInfo1 = GetBaseByName(info->GetBaseClassName1()); - info->m_baseInfo2 = GetBaseByName(info->GetBaseClassName2()); - } -} - -void wxClassInfo::CleanUpClasses() -{ - delete wxClassInfo::sm_classTable; - wxClassInfo::sm_classTable = NULL; } - wxObject *wxCreateDynamicObject(const wxChar *name) { #if defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT @@ -247,7 +290,7 @@ wxObject *wxCreateDynamicObject(const wxChar *name) // ---------------------------------------------------------------------------- -// wxClassInfo +// wxObject // ---------------------------------------------------------------------------- void wxObject::Ref(const wxObject& clone) @@ -277,7 +320,7 @@ void wxObject::UnRef() { wxASSERT_MSG( m_refData->m_count > 0, _T("invalid ref data count") ); - if ( !--m_refData->m_count ) + if ( --m_refData->m_count == 0 ) delete m_refData; m_refData = NULL; } @@ -320,32 +363,3 @@ wxObject::CloneRefData(const wxObjectRefData * WXUNUSED(data)) const 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