X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a095505c96a4ffbbfa559d9239bc8a6f75698da1..02a525b385836d41f63e3bbebec869c7b8249026:/src/common/dynload.cpp diff --git a/src/common/dynload.cpp b/src/common/dynload.cpp index 11f848e524..854d7c3049 100644 --- a/src/common/dynload.cpp +++ b/src/common/dynload.cpp @@ -10,7 +10,7 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "dynload.h" #endif @@ -34,276 +34,14 @@ #include "wx/log.h" #include "wx/intl.h" #include "wx/hash.h" + #include "wx/utils.h" #endif -#include "wx/filename.h" // for SplitPath() #include "wx/strconv.h" #include "wx/dynload.h" #include "wx/module.h" -#if defined(__DARWIN__) -/* Porting notes: - * The dlopen port is a port from dl_next.xs by Anno Siegel. - * dl_next.xs is itself a port from dl_dlopen.xs by Paul Marquess. - * The method used here is just to supply the sun style dlopen etc. - * functions in terms of Darwin NS*. - */ -void *dlopen(const char *path, int mode /* mode is ignored */); -void *dlsym(void *handle, const char *symbol); -int dlclose(void *handle); -const char *dlerror(void); -#endif - -// ============================================================================ -// implementation -// ============================================================================ - -// --------------------------------------------------------------------------- -// wxDynamicLibrary -// --------------------------------------------------------------------------- - -//FIXME: This class isn't really common at all, it should be moved into -// platform dependent files. - -#if defined(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__) - const wxChar *wxDynamicLibrary::ms_dllext = _T(".dll"); -#elif defined(__UNIX__) - #if defined(__HPUX__) - const wxChar *wxDynamicLibrary::ms_dllext = _T(".sl"); - #else - const wxChar *wxDynamicLibrary::ms_dllext = _T(".so"); - #endif -#endif - -wxDllType wxDynamicLibrary::GetProgramHandle() -{ -#if defined( HAVE_DLOPEN ) && !defined(__EMX__) - return dlopen(0, RTLD_LAZY); -#elif defined (HAVE_SHL_LOAD) - return PROG_HANDLE; -#else - wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2")); - return 0; -#endif -} - -bool wxDynamicLibrary::Load(wxString libname, int flags) -{ - wxASSERT_MSG(m_handle == 0, _T("Library already loaded.")); - - // add the proper extension for the DLL ourselves unless told not to - if ( !(flags & wxDL_VERBATIM) ) - { - // and also check that the libname doesn't already have it - wxString ext; - wxFileName::SplitPath(libname, NULL, NULL, &ext); - if ( ext.empty() ) - { - libname += GetDllExt(); - } - } - - // different ways to load a shared library - // - // FIXME: should go to the platform-specific files! -#if defined(__WXMAC__) && !defined(__DARWIN__) - FSSpec myFSSpec; - Ptr myMainAddr; - Str255 myErrName; - - wxMacFilename2FSSpec( libname , &myFSSpec ); - - if( GetDiskFragment( &myFSSpec, - 0, - kCFragGoesToEOF, - "\p", - kPrivateCFragCopy, - &m_handle, - &myMainAddr, - myErrName ) != noErr ) - { - p2cstr( myErrName ); - wxLogSysError( _("Failed to load shared library '%s' Error '%s'"), - libname.c_str(), - (char*)myErrName ); - m_handle = 0; - } - -#elif defined(__WXPM__) || defined(__EMX__) - char err[256] = ""; - DosLoadModule(err, sizeof(err), libname.c_str(), &m_handle); - -#elif defined(HAVE_DLOPEN) || defined(__DARWIN__) - -#if defined(__VMS) || defined(__DARWIN__) - m_handle = dlopen(libname.c_str(), 0); // The second parameter is ignored -#else // !__VMS && !__DARWIN__ - int rtldFlags = 0; - - if ( flags & wxDL_LAZY ) - { - wxASSERT_MSG( (flags & wxDL_NOW) == 0, - _T("wxDL_LAZY and wxDL_NOW are mutually exclusive.") ); -#ifdef RTLD_LAZY - rtldFlags |= RTLD_LAZY; -#else - wxLogDebug(_T("wxDL_LAZY is not supported on this platform")); -#endif - } - else if ( flags & wxDL_NOW ) - { -#ifdef RTLD_NOW - rtldFlags |= RTLD_NOW; -#else - wxLogDebug(_T("wxDL_NOW is not supported on this platform")); -#endif - } - - if ( flags & wxDL_GLOBAL ) - { -#ifdef RTLD_GLOBAL - rtldFlags |= RTLD_GLOBAL; -#else - wxLogDebug(_T("RTLD_GLOBAL is not supported on this platform.")); -#endif - } - - m_handle = dlopen(libname.fn_str(), rtldFlags); -#endif // __VMS || __DARWIN__ ? - -#elif defined(HAVE_SHL_LOAD) - int shlFlags = 0; - - if( flags & wxDL_LAZY ) - { - wxASSERT_MSG( (flags & wxDL_NOW) == 0, - _T("wxDL_LAZY and wxDL_NOW are mutually exclusive.") ); - shlFlags |= BIND_DEFERRED; - } - else if( flags & wxDL_NOW ) - { - shlFlags |= BIND_IMMEDIATE; - } - m_handle = shl_load(libname.fn_str(), BIND_DEFERRED, 0); - -#elif defined(__WINDOWS__) - m_handle = ::LoadLibrary(libname.c_str()); -#else - #error "runtime shared lib support not implemented on this platform" -#endif - - if ( m_handle == 0 ) - { - wxString msg(_("Failed to load shared library '%s'")); -#if defined(HAVE_DLERROR) && !defined(__EMX__) - -#if wxUSE_UNICODE - wxWCharBuffer buffer = wxConvLocal.cMB2WC( dlerror() ); - const wxChar *err = buffer; -#else - const wxChar *err = dlerror(); -#endif - - if( err ) - wxLogError( msg, err ); -#else - wxLogSysError( msg, libname.c_str() ); -#endif - } - - return IsLoaded(); -} - -void wxDynamicLibrary::Unload() -{ - if( IsLoaded() ) - { -#if defined(__WXPM__) || defined(__EMX__) - DosFreeModule( m_handle ); -#elif defined(HAVE_DLOPEN) || defined(__DARWIN__) - dlclose( m_handle ); -#elif defined(HAVE_SHL_LOAD) - shl_unload( m_handle ); -#elif defined(__WINDOWS__) - ::FreeLibrary( m_handle ); -#elif defined(__WXMAC__) && !defined(__DARWIN__) - CloseConnection( (CFragConnectionID*) &m_handle ); -#else -#error "runtime shared lib support not implemented" -#endif - m_handle = 0; - } -} - -void *wxDynamicLibrary::GetSymbol(const wxString &name, bool *success) const -{ - wxCHECK_MSG( IsLoaded(), NULL, - _T("Can't load symbol from unloaded library") ); - - bool failed = FALSE; - void *symbol = 0; - -#if defined(__WXMAC__) && !defined(__DARWIN__) - Ptr symAddress; - CFragSymbolClass symClass; - Str255 symName; -#if TARGET_CARBON - c2pstrcpy( (StringPtr) symName, name ); -#else - strcpy( (char *)symName, name ); - c2pstr( (char *)symName ); -#endif - if( FindSymbol( dllHandle, symName, &symAddress, &symClass ) == noErr ) - symbol = (void *)symAddress; - -#elif defined(__WXPM__) || defined(__EMX__) - DosQueryProcAddr( m_handle, 1L, name.c_str(), (PFN*)symbol ); - -#elif defined(HAVE_DLOPEN) || defined(__DARWIN__) - symbol = dlsym( m_handle, name.fn_str() ); - -#elif defined(HAVE_SHL_LOAD) - // use local variable since shl_findsym modifies the handle argument - // to indicate where the symbol was found (GD) - wxDllType the_handle = m_handle; - if( shl_findsym( &the_handle, name.fn_str(), TYPE_UNDEFINED, &symbol ) != 0 ) - symbol = 0; - -#elif defined(__WINDOWS__) - symbol = (void*) ::GetProcAddress( m_handle, name.mb_str() ); - -#else -#error "runtime shared lib support not implemented" -#endif - - if ( !symbol ) - { -#if defined(HAVE_DLERROR) && !defined(__EMX__) - -#if wxUSE_UNICODE - wxWCharBuffer buffer = wxConvLocal.cMB2WC( dlerror() ); - const wxChar *err = buffer; -#else - const wxChar *err = dlerror(); -#endif - - if( err ) - { - wxLogError(wxT("%s"), err); - } -#else - failed = TRUE; - wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"), - name.c_str()); -#endif - } - if( success ) - *success = !failed; - - return symbol; -} - // --------------------------------------------------------------------------- // wxPluginLibrary @@ -320,9 +58,9 @@ public: // TODO: create ms_classes on demand, why always preallocate it? virtual bool OnInit() { - wxPluginLibrary::ms_classes = new wxDLImports(wxKEY_STRING); + wxPluginLibrary::ms_classes = new wxDLImports; wxPluginManager::CreateManifest(); - return TRUE; + return true; } virtual void OnExit() @@ -349,7 +87,7 @@ wxPluginLibrary::wxPluginLibrary(const wxString &libname, int flags) if( m_handle != 0 ) { - UpdateClassInfo(); + UpdateClasses(); RegisterModules(); } else @@ -364,7 +102,7 @@ wxPluginLibrary::~wxPluginLibrary() if( m_handle != 0 ) { UnregisterModules(); - RestoreClassInfo(); + RestoreClasses(); } } @@ -382,78 +120,42 @@ bool wxPluginLibrary::UnrefLib() wxASSERT_MSG( m_objcount == 0, _T("Library unloaded before all objects were destroyed") ); - if ( --m_linkcount == 0 ) + if ( m_linkcount == 0 || --m_linkcount == 0 ) { delete this; - return TRUE; + return true; } - return FALSE; + return false; } // ------------------------ // Private methods // ------------------------ -void wxPluginLibrary::UpdateClassInfo() +void wxPluginLibrary::UpdateClasses() { - wxClassInfo *info; - wxHashTable *t = wxClassInfo::sm_classTable; - - // FIXME: Below is simply a cut and paste specialisation of - // wxClassInfo::InitializeClasses. Once this stabilises, - // the two should probably be merged. - // - // Actually it's becoming questionable whether we should merge - // this info with the main ClassInfo tables since we can nearly - // handle this completely internally now and it does expose - // certain (minimal % user_stupidy) risks. - - for(info = m_after; info != m_before; info = info->m_next) + for (wxClassInfo *info = m_after; info != m_before; info = info->m_next) { if( info->m_className ) { - if( t->Get(info->m_className) == 0 ) - t->Put(info->m_className, (wxObject *)info); - // Hash all the class names into a local table too so // we can quickly find the entry they correspond to. (*ms_classes)[info->m_className] = this; } } - -#if wxUSE_XTI == 0 - for(info = m_after; info != m_before; info = info->m_next) - { - if( info->m_baseClassName1 ) - info->m_baseInfo1 = (wxClassInfo *)t->Get(info->m_baseClassName1); - if( info->m_baseClassName2 ) - info->m_baseInfo2 = (wxClassInfo *)t->Get(info->m_baseClassName2); - } -#endif } -void wxPluginLibrary::RestoreClassInfo() +void wxPluginLibrary::RestoreClasses() { - wxClassInfo *info; + // Check if there is a need to restore classes. + if (!ms_classes) + return; - for(info = m_after; info != m_before; info = info->m_next) + for(wxClassInfo *info = m_after; info != m_before; info = info->m_next) { - wxClassInfo::sm_classTable->Delete(info->m_className); ms_classes->erase(ms_classes->find(info->m_className)); } - - if( wxClassInfo::sm_first == m_after ) - wxClassInfo::sm_first = m_before; - else - { - info = wxClassInfo::sm_first; - while( info->m_next && info->m_next != m_after ) info = info->m_next; - - wxASSERT_MSG( info, _T("ClassInfo from wxPluginLibrary not found on purge")); - - info->m_next = m_before; - } } void wxPluginLibrary::RegisterModules() @@ -524,7 +226,8 @@ void wxPluginLibrary::UnregisterModules() for ( it = m_wxmodules.begin(); it != m_wxmodules.end(); ++it ) wxModule::UnregisterModule( *it ); - WX_CLEAR_LIST(wxModuleList, m_wxmodules); + // NB: content of the list was deleted by UnregisterModule calls above: + m_wxmodules.clear(); } @@ -613,7 +316,7 @@ bool wxPluginManager::UnloadLibrary(const wxString& libname) wxLogDebug(_T("Attempt to unload library '%s' which is not loaded."), libname.c_str()); - return FALSE; + return false; } wxLogTrace(_T("dll"), _T("UnloadLibrary(%s)"), realname.c_str()); @@ -621,31 +324,14 @@ bool wxPluginManager::UnloadLibrary(const wxString& libname) if ( !entry->UnrefLib() ) { // not really unloaded yet - return FALSE; + return false; } ms_manifest->erase(ms_manifest->find(realname)); - return TRUE; + return true; } -#if WXWIN_COMPATIBILITY_2_2 -wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) -{ - for ( wxDLManifest::iterator i = ms_manifest->begin(); - i != ms_manifest->end(); - ++i ) - { - wxPluginLibrary * const lib = i->second; - - if ( lib->GetLibHandle() == handle ) - return lib; - } - - return NULL; -} -#endif // WXWIN_COMPATIBILITY_2_2 - // ------------------------ // Class implementation // ------------------------ @@ -677,11 +363,29 @@ void wxPluginManager::Unload() m_entry = NULL; } + + +#if WXWIN_COMPATIBILITY_2_2 + +wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) +{ + for ( wxDLManifest::iterator i = ms_manifest->begin(); + i != ms_manifest->end(); + ++i ) + { + wxPluginLibrary * const lib = i->second; + + if ( lib->GetLibHandle() == handle ) + return lib; + } + + return NULL; +} + // --------------------------------------------------------------------------- // wxDllLoader (all these methods are static) // --------------------------------------------------------------------------- -#if WXWIN_COMPATIBILITY_2_2 wxDllType wxDllLoader::LoadLibrary(const wxString &name, bool *success) { @@ -716,7 +420,7 @@ wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) wxFAIL_MSG( _T("Using a library not loaded with wxDllLoader?") ); if ( success ) - *success = FALSE; + *success = false; return NULL; } @@ -724,7 +428,160 @@ wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) return p->GetSymbol(name, success); } + +// --------------------------------------------------------------------------- +// Global variables +// --------------------------------------------------------------------------- + +wxLibraries wxTheLibraries; + +// ============================================================================ +// implementation +// ============================================================================ + +// construct the full name from the base shared object name: adds a .dll +// suffix under Windows or .so under Unix +static wxString ConstructLibraryName(const wxString& basename) +{ + wxString fullname; + fullname << basename << wxDllLoader::GetDllExt(); + + return fullname; +} + +// --------------------------------------------------------------------------- +// wxLibrary (one instance per dynamic library) +// --------------------------------------------------------------------------- + +wxLibrary::wxLibrary(wxDllType handle) +{ + typedef wxClassInfo *(*t_get_first)(void); + t_get_first get_first; + + m_handle = handle; + + // Some system may use a local heap for library. + get_first = (t_get_first)GetSymbol(_T("wxGetClassFirst")); + // It is a wxWidgets DLL. + if (get_first) + PrepareClasses(get_first()); +} + +wxLibrary::~wxLibrary() +{ + if ( m_handle ) + { + wxDllLoader::UnloadLibrary(m_handle); + } +} + +wxObject *wxLibrary::CreateObject(const wxString& name) +{ + wxClassInfo *info = (wxClassInfo *)classTable.Get(name); + + if (!info) + return NULL; + + return info->CreateObject(); +} + +void wxLibrary::PrepareClasses(wxClassInfo *first) +{ + // Index all class infos by their class name + wxClassInfo *info = first; + while (info) + { + if (info->m_className) + classTable.Put(info->m_className, (wxObject *)info); + info = info->m_next; + } + +#if !wxUSE_EXTENDED_RTTI + // Set base pointers for each wxClassInfo + info = first; + while (info) + { + if (info->GetBaseClassName1()) + info->m_baseInfo1 = (wxClassInfo *)classTable.Get(info->GetBaseClassName1()); + if (info->GetBaseClassName2()) + info->m_baseInfo2 = (wxClassInfo *)classTable.Get(info->GetBaseClassName2()); + info = info->m_next; + } +#endif +} + +void *wxLibrary::GetSymbol(const wxString& symbname) +{ + return wxDllLoader::GetSymbol(m_handle, symbname); +} + + +// --------------------------------------------------------------------------- +// wxLibraries (only one instance should normally exist) +// --------------------------------------------------------------------------- + +wxLibraries::wxLibraries():m_loaded(wxKEY_STRING) +{ +} + +wxLibraries::~wxLibraries() +{ + wxNode *node = m_loaded.First(); + + while (node) { + wxLibrary *lib = (wxLibrary *)node->Data(); + delete lib; + + node = node->Next(); + } +} + +wxLibrary *wxLibraries::LoadLibrary(const wxString& name) +{ + wxLibrary *lib; + wxClassInfo *old_sm_first; + wxNode *node = m_loaded.Find(name.GetData()); + + if (node != NULL) + return ((wxLibrary *)node->Data()); + + // If DLL shares data, this is necessary. + old_sm_first = wxClassInfo::sm_first; + wxClassInfo::sm_first = NULL; + + wxString libname = ConstructLibraryName(name); + + bool success = false; + wxDllType handle = wxDllLoader::LoadLibrary(libname, &success); + if(success) + { + lib = new wxLibrary(handle); + wxClassInfo::sm_first = old_sm_first; + + m_loaded.Append(name.GetData(), lib); + } + else + lib = NULL; + return lib; +} + +wxObject *wxLibraries::CreateObject(const wxString& path) +{ + wxNode *node = m_loaded.First(); + wxObject *obj; + + while (node) { + obj = ((wxLibrary *)node->Data())->CreateObject(path); + if (obj) + return obj; + + node = node->Next(); + } + return NULL; +} + #endif // WXWIN_COMPATIBILITY_2_2 + #endif // wxUSE_DYNAMIC_LOADER