X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4f89dbc48e4ffdec4ea55b5444c6df87df2d642d..69659fd770f615210efac4b4fa741b3ad6223616:/src/common/dynload.cpp diff --git a/src/common/dynload.cpp b/src/common/dynload.cpp index 6341b6d593..ffb80f1af6 100644 --- a/src/common/dynload.cpp +++ b/src/common/dynload.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: dynload.cpp +// Name: src/common/dynload.cpp // Purpose: Dynamic loading framework // Author: Ron Lee, David Falkinder, Vadim Zeitlin and a cast of 1000's // (derived in part from dynlib.cpp (c) 1998 Guilhem Lavaux) @@ -7,13 +7,9 @@ // Created: 03/12/01 // RCS-ID: $Id$ // Copyright: (c) 2001 Ron Lee -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "dynload.h" -#endif - // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- @@ -21,278 +17,80 @@ #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif #if wxUSE_DYNAMIC_LOADER #ifdef __WINDOWS__ -#include "wx/msw/private.h" + #include "wx/msw/private.h" #endif #ifndef WX_PRECOMP -#include "wx/log.h" -#include "wx/intl.h" + #include "wx/log.h" + #include "wx/intl.h" + #include "wx/hash.h" + #include "wx/utils.h" + #include "wx/module.h" #endif -#include "wx/dynload.h" +#include "wx/strconv.h" +#include "wx/dynload.h" -// ============================================================================ -// implementation -// ============================================================================ // --------------------------------------------------------------------------- -// wxDynamicLibrary +// wxPluginLibrary // --------------------------------------------------------------------------- -//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 wxString wxDynamicLibrary::ms_dllext( _T(".dll") ); -#elif defined(__UNIX__) -#if defined(__HPUX__) -const wxString wxDynamicLibrary::ms_dllext( _T(".sl") ); -#else -const wxString 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 -} +wxDLImports* wxPluginLibrary::ms_classes = NULL; -bool wxDynamicLibrary::Load(wxString libname, wxDLFlags flags) +class wxPluginLibraryModule : public wxModule { - wxASSERT_MSG(m_handle == 0, _T("Library already loaded.")); - - if( !(flags & wxDL_VERBATIM) ) - libname += GetDllExt(); - -#if defined(__WXMAC__) && !defined(__UNIX__) - 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) - -#ifdef __VMS - m_handle = dlopen(libname.c_str(), 0); // The second parameter is ignored -#else - int rtldFlags = 0; - - if( flags & wxDL_LAZY ) - { - wxASSERT_MSG( (flags & wxDL_NOW) == 0, - _T("wxDL_LAZY and wxDL_NOW are mutually exclusive.") ); - rtldFlags |= RTLD_LAZY; - } - else if( flags & wxDL_NOW ) - { - rtldFlags |= RTLD_NOW; - } - if( flags & wxDL_GLOBAL ) - { -#ifdef __osf__ - wxLogDebug(_T("WARNING: RTLD_GLOBAL is not a supported on this platform.")); -#endif - rtldFlags |= RTLD_GLOBAL; - } - - m_handle = dlopen(libname.c_str(), rtldFlags); -#endif // __VMS - -#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.c_str(), BIND_DEFERRED, 0); - -#elif defined(__DARWIN__) - NSObjectFileImage ofile; - int dyld_result = NSCreateObjectFileImageFromFile(libname.c_str(), &ofile); - - if (dyld_result != NSObjectFileImageSuccess) - { - TranslateError(libname.c_str(), OFImage, dyld_result); - } - else - { - // NSLinkModule will cause the run to abort on any link error's - // not very friendly but the error recovery functionality is limited. - m_handle = NSLinkModule(ofile, libname.c_str(), TRUE); - } - -#elif defined(__WINDOWS__) - m_handle = ::LoadLibrary(libname.c_str()); +public: + wxPluginLibraryModule() { } -#else -#error "runtime shared lib support not implemented" -#endif - - if ( m_handle == 0 ) + // TODO: create ms_classes on demand, why always preallocate it? + virtual bool OnInit() { - wxString msg(_("Failed to load shared library '%s'")); -#ifdef HAVE_DLERROR - const wxChar *err = dlerror(); - if( err ) - wxLogError( msg, err ); -#else - wxLogSysError( msg, libname.c_str() ); -#endif + wxPluginLibrary::ms_classes = new wxDLImports; + wxPluginManager::CreateManifest(); + return true; } - return IsLoaded(); -} - -void wxDynamicLibrary::Unload() -{ - if( IsLoaded() ) + virtual void OnExit() { -#if defined(__WXPM__) || defined(__EMX__) - DosFreeModule( m_handle ); -#elif defined(HAVE_DLOPEN) - dlclose( m_handle ); -#elif defined(HAVE_SHL_LOAD) - shl_unload( m_handle ); -#elif defined(__WINDOWS__) - ::FreeLibrary( m_handle ); -#elif defined(__WXMAC__) - CloseConnection( &m_handle ); -#else -#error "runtime shared lib support not implemented" -#endif - m_handle = 0; + delete wxPluginLibrary::ms_classes; + wxPluginLibrary::ms_classes = NULL; + wxPluginManager::ClearManifest(); } -} - -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(__UNIX__) - 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) - symbol = dlsym( m_handle, name.c_str() ); - -#elif defined(HAVE_SHL_LOAD) - if( shl_findsym( &m_handle, name.c_str(), TYPE_UNDEFINED, &symbol ) != 0 ) - symbol = 0; - -#elif defined(__DARWIN__) - if( NSIsSymbolNameDefined( name.c_str() ) ) - symbol = NSAddressOfSymbol( NSLookupAndBindSymbol( name.c_str() ) ); - -#elif defined(__WINDOWS__) - symbol = ::GetProcAddress( m_handle, name.c_str() ); - -#else -#error "runtime shared lib support not implemented" -#endif - - if ( !symbol ) - { - wxString msg(_("wxDynamicLibrary failed to GetSymbol '%s'")); -#ifdef HAVE_DLERROR - const wxChar *err = dlerror(); - if( err ) - { - failed = TRUE; - wxLogError( msg, 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 -// --------------------------------------------------------------------------- +private: + DECLARE_DYNAMIC_CLASS(wxPluginLibraryModule ) +}; +IMPLEMENT_DYNAMIC_CLASS(wxPluginLibraryModule, wxModule) -wxDLImports wxPluginLibrary::ms_classes(wxKEY_STRING); -wxPluginLibrary::wxPluginLibrary(const wxString &libname, wxDLFlags flags) +wxPluginLibrary::wxPluginLibrary(const wxString &libname, int flags) : m_linkcount(1) , m_objcount(0) { - m_before = wxClassInfo::sm_first; + m_before = wxClassInfo::GetFirst(); Load( libname, flags ); - m_after = wxClassInfo::sm_first; + m_after = wxClassInfo::GetFirst(); if( m_handle != 0 ) { - UpdateClassInfo(); + UpdateClasses(); RegisterModules(); } else - --m_linkcount; // Flag us for deletion + { + // Flag us for deletion + --m_linkcount; + } } wxPluginLibrary::~wxPluginLibrary() @@ -300,83 +98,59 @@ wxPluginLibrary::~wxPluginLibrary() if( m_handle != 0 ) { UnregisterModules(); - RestoreClassInfo(); + RestoreClasses(); } } +wxPluginLibrary *wxPluginLibrary::RefLib() +{ + wxCHECK_MSG( m_linkcount > 0, NULL, + _T("Library had been already deleted!") ); + + ++m_linkcount; + return this; +} + bool wxPluginLibrary::UnrefLib() { - wxASSERT_MSG( m_objcount == 0, _T("Library unloaded before all objects were destroyed") ); - if( m_linkcount == 0 || --m_linkcount == 0 ) + wxASSERT_MSG( m_objcount == 0, + _T("Library unloaded before all objects were destroyed") ); + + 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 (const wxClassInfo *info = m_after; info != m_before; info = info->GetNext()) { - if( info->m_className ) + if( info->GetClassName() ) { - 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. - - if( ms_classes.Get(info->m_className) == 0 ) - ms_classes.Put(info->m_className, (wxObject *) this); + (*ms_classes)[info->GetClassName()] = this; } } - - 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); - } } -void wxPluginLibrary::RestoreClassInfo() +void wxPluginLibrary::RestoreClasses() { - wxClassInfo *info; - - for(info = m_after; info != m_before; info = info->m_next) - { - wxClassInfo::sm_classTable->Delete(info->m_className); - ms_classes.Delete(info->m_className); - } + // Check if there is a need to restore classes. + if (!ms_classes) + return; - if( wxClassInfo::sm_first == m_after ) - wxClassInfo::sm_first = m_before; - else + for(const wxClassInfo *info = m_after; info != m_before; info = info->GetNext()) { - 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; + ms_classes->erase(ms_classes->find(info->GetClassName())); } } @@ -393,7 +167,7 @@ void wxPluginLibrary::RegisterModules() wxASSERT_MSG( m_linkcount == 1, _T("RegisterModules should only be called for the first load") ); - for(wxClassInfo *info = m_after; info != m_before; info = info->m_next) + for ( const wxClassInfo *info = m_after; info != m_before; info = info->GetNext()) { if( info->IsKindOf(CLASSINFO(wxModule)) ) { @@ -401,16 +175,18 @@ void wxPluginLibrary::RegisterModules() wxASSERT_MSG( m, _T("wxDynamicCast of wxModule failed") ); - m_wxmodules.Append(m); + m_wxmodules.push_back(m); wxModule::RegisterModule(m); } } // FIXME: Likewise this is (well was) very similar to InitializeModules() - for(wxModuleList::Node *node = m_wxmodules.GetFirst(); node; node->GetNext()) + for ( wxModuleList::iterator it = m_wxmodules.begin(); + it != m_wxmodules.end(); + ++it) { - if( !node->GetData()->Init() ) + if( !(*it)->Init() ) { wxLogDebug(_T("wxModule::Init() failed for wxPluginLibrary")); @@ -421,13 +197,14 @@ void wxPluginLibrary::RegisterModules() // let the dtor Exit the rest on shutdown, (which we'll initiate // shortly). - wxModuleList::Node *oldNode = 0; + wxModuleList::iterator oldNode = m_wxmodules.end(); do { - node = node->GetNext(); - delete oldNode; - wxModule::UnregisterModule( node->GetData() ); - oldNode = node; - } while( node ); + ++it; + if( oldNode != m_wxmodules.end() ) + m_wxmodules.erase(oldNode); + wxModule::UnregisterModule( *it ); + oldNode = it; + } while( it != m_wxmodules.end() ); --m_linkcount; // Flag us for deletion break; @@ -437,194 +214,149 @@ void wxPluginLibrary::RegisterModules() void wxPluginLibrary::UnregisterModules() { - wxModuleList::Node *node; + wxModuleList::iterator it; - for(node = m_wxmodules.GetFirst(); node; node->GetNext()) - node->GetData()->Exit(); + for ( it = m_wxmodules.begin(); it != m_wxmodules.end(); ++it ) + (*it)->Exit(); - for(node = m_wxmodules.GetFirst(); node; node->GetNext()) - wxModule::UnregisterModule( node->GetData() ); + for ( it = m_wxmodules.begin(); it != m_wxmodules.end(); ++it ) + wxModule::UnregisterModule( *it ); - m_wxmodules.DeleteContents(TRUE); + // NB: content of the list was deleted by UnregisterModule calls above: + m_wxmodules.clear(); } // --------------------------------------------------------------------------- -// wxPluginLibrary +// wxPluginManager // --------------------------------------------------------------------------- -wxDLManifest wxPluginManager::ms_manifest(wxKEY_STRING); +wxDLManifest* wxPluginManager::ms_manifest = NULL; // ------------------------ // Static accessors // ------------------------ -wxPluginLibrary *wxPluginManager::LoadLibrary(const wxString &libname, wxDLFlags flags) +wxPluginLibrary * +wxPluginManager::LoadLibrary(const wxString &libname, int flags) { wxString realname(libname); if( !(flags & wxDL_VERBATIM) ) realname += wxDynamicLibrary::GetDllExt(); - wxPluginLibrary *entry = (wxPluginLibrary*) ms_manifest.Get(realname); + wxPluginLibrary *entry; - if( entry != 0 ) + if ( flags & wxDL_NOSHARE ) { + entry = NULL; + } + else + { + entry = FindByName(realname); + } + + if ( entry ) + { + wxLogTrace(_T("dll"), + _T("LoadLibrary(%s): already loaded."), realname.c_str()); + entry->RefLib(); } else { entry = new wxPluginLibrary( libname, flags ); - if( entry->IsLoaded() ) + if ( entry->IsLoaded() ) { - ms_manifest.Put(realname, (wxObject*) entry); + (*ms_manifest)[realname] = entry; + + wxLogTrace(_T("dll"), + _T("LoadLibrary(%s): loaded ok."), realname.c_str()); + } else { - wxCHECK_MSG( entry->UnrefLib(), 0, - _T("Currently linked library is, ..not loaded??") ); - entry = 0; + wxLogTrace(_T("dll"), + _T("LoadLibrary(%s): failed to load."), realname.c_str()); + + // we have created entry just above + if ( !entry->UnrefLib() ) + { + // ... so UnrefLib() is supposed to delete it + wxFAIL_MSG( _T("Currently linked library is not loaded?") ); + } + + entry = NULL; } } + return entry; } -bool wxPluginManager::UnloadLibrary(const wxString &libname) +bool wxPluginManager::UnloadLibrary(const wxString& libname) { - wxPluginLibrary *entry = (wxPluginLibrary*) ms_manifest.Get(libname); + wxString realname = libname; - if( !entry ) - entry = (wxPluginLibrary*) ms_manifest.Get(libname + wxDynamicLibrary::GetDllExt()); + wxPluginLibrary *entry = FindByName(realname); - if( entry ) - return entry->UnrefLib(); + if ( !entry ) + { + realname += wxDynamicLibrary::GetDllExt(); - wxLogDebug(_T("Attempt to Unlink library '%s' (which is not linked)."), libname.c_str()); - return FALSE; -} + entry = FindByName(realname); + } -#if WXWIN_COMPATIBILITY_2_2 -wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) -{ - wxNode *node; - ms_manifest.BeginFind(); + if ( !entry ) + { + wxLogDebug(_T("Attempt to unload library '%s' which is not loaded."), + libname.c_str()); + + return false; + } + + wxLogTrace(_T("dll"), _T("UnloadLibrary(%s)"), realname.c_str()); + + if ( !entry->UnrefLib() ) + { + // not really unloaded yet + return false; + } - for(node = ms_manifest.Next(); node; node = ms_manifest.Next()) - if( ((wxPluginLibrary*)node->GetData())->GetLibHandle() == handle ) - return (wxPluginLibrary*)node->GetData(); + ms_manifest->erase(ms_manifest->find(realname)); - return 0; + return true; } -#endif // ------------------------ // Class implementation // ------------------------ -bool wxPluginManager::Load(const wxString &libname, wxDLFlags flags) +bool wxPluginManager::Load(const wxString &libname, int flags) { m_entry = wxPluginManager::LoadLibrary(libname, flags); + return IsLoaded(); } void wxPluginManager::Unload() { - wxNode *node; - ms_manifest.BeginFind(); - - // It's either this or store the name of the lib just to do this. - - for(node = ms_manifest.Next(); node; node = ms_manifest.Next()) - if( (wxPluginLibrary*)node->GetData() == m_entry ) - break; - - if( m_entry && m_entry->UnrefLib() ) - { - delete node; - m_entry = 0; - } -} - - -#ifdef __DARWIN__ -// --------------------------------------------------------------------------- -// For Darwin/Mac OS X -// supply the sun style dlopen functions in terms of Darwin NS* -// --------------------------------------------------------------------------- - -extern "C" { -#import -}; - -enum dyldErrorSource -{ - OFImage, -}; + wxCHECK_RET( m_entry, _T("unloading an invalid wxPluginManager?") ); -static char dl_last_error[1024]; - -static void TranslateError(const char *path, enum dyldErrorSource type, int number) -{ - unsigned int index; - static char *OFIErrorStrings[] = + for ( wxDLManifest::iterator i = ms_manifest->begin(); + i != ms_manifest->end(); + ++i ) { - "%s(%d): Object Image Load Failure\n", - "%s(%d): Object Image Load Success\n", - "%s(%d): Not an recognisable object file\n", - "%s(%d): No valid architecture\n", - "%s(%d): Object image has an invalid format\n", - "%s(%d): Invalid access (permissions?)\n", - "%s(%d): Unknown error code from NSCreateObjectFileImageFromFile\n", - }; -#define NUM_OFI_ERRORS (sizeof(OFIErrorStrings) / sizeof(OFIErrorStrings[0])) - - switch (type) - { - case OFImage: - index = number; - if (index > NUM_OFI_ERRORS - 1) { - index = NUM_OFI_ERRORS - 1; - } - sprintf(dl_last_error, OFIErrorStrings[index], path, number); - break; - - default: - sprintf(dl_last_error, "%s(%d): Totally unknown error type %d\n", - path, number, type); - break; + if ( i->second == m_entry ) + { + ms_manifest->erase(i); + break; + } } -} - -#endif // __DARWIN__ - - -// --------------------------------------------------------------------------- -// wxDllLoader (all these methods are static) -// --------------------------------------------------------------------------- -#if WXWIN_COMPATIBILITY_2_2 + m_entry->UnrefLib(); -wxDllType wxDllLoader::LoadLibrary(const wxString &name) -{ - wxPluginLibrary *p = wxPluginManager::LoadLibrary(name, wxDL_DEFAULT | wxDL_VERBATIM); - return p->GetLibHandle(); + m_entry = NULL; } -void wxDllLoader::UnloadLibrary(wxDllType handle) -{ - wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(handle); - p->UnrefLib(); -} - -void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) -{ - wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(dllHandle); - return p->GetSymbol(name, success); -} - -#endif // WXWIN_COMPATIBILITY_2_2 - #endif // wxUSE_DYNAMIC_LOADER - -// vi:sts=4:sw=4:et