X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/32b70aec1ff90877ae0ce2ce82967f698218fbdc..8adb5d455797d5b656ef677c74359e5a578b539f:/src/common/dynload.cpp diff --git a/src/common/dynload.cpp b/src/common/dynload.cpp index 5171240c34..a03732173c 100644 --- a/src/common/dynload.cpp +++ b/src/common/dynload.cpp @@ -7,7 +7,7 @@ // Created: 03/12/01 // RCS-ID: $Id$ // Copyright: (c) 2001 Ron Lee -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifdef __GNUG__ @@ -33,9 +33,11 @@ #ifndef WX_PRECOMP #include "wx/log.h" #include "wx/intl.h" + #include "wx/hash.h" #endif #include "wx/filename.h" // for SplitPath() +#include "wx/strconv.h" #include "wx/dynload.h" #include "wx/module.h" @@ -65,13 +67,13 @@ const char *dlerror(void); // platform dependent files. #if defined(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__) -const wxString wxDynamicLibrary::ms_dllext( _T(".dll") ); + const wxChar *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 + #if defined(__HPUX__) + const wxChar *wxDynamicLibrary::ms_dllext = _T(".sl"); + #else + const wxChar *wxDynamicLibrary::ms_dllext = _T(".so"); + #endif #endif wxDllType wxDynamicLibrary::GetProgramHandle() @@ -102,6 +104,9 @@ bool wxDynamicLibrary::Load(wxString libname, int flags) } } + // different ways to load a shared library + // + // FIXME: should go to the platform-specific files! #if defined(__WXMAC__) && !defined(__DARWIN__) FSSpec myFSSpec; Ptr myMainAddr; @@ -133,29 +138,39 @@ bool wxDynamicLibrary::Load(wxString libname, int flags) #if defined(__VMS) || defined(__DARWIN__) m_handle = dlopen(libname.c_str(), 0); // The second parameter is ignored -#else +#else // !__VMS && !__DARWIN__ int rtldFlags = 0; - if( flags & wxDL_LAZY ) + 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 ) + 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 ) + + if ( flags & wxDL_GLOBAL ) { -#ifdef __osf__ - wxLogDebug(_T("WARNING: RTLD_GLOBAL is not a supported on this platform.")); -#endif +#ifdef RTLD_GLOBAL rtldFlags |= RTLD_GLOBAL; +#else + wxLogDebug(_T("RTLD_GLOBAL is not supported on this platform.")); +#endif } - m_handle = dlopen(libname.c_str(), rtldFlags); -#endif // __VMS || __DARWIN__ + m_handle = dlopen(libname.fn_str(), rtldFlags); +#endif // __VMS || __DARWIN__ ? #elif defined(HAVE_SHL_LOAD) int shlFlags = 0; @@ -170,20 +185,26 @@ bool wxDynamicLibrary::Load(wxString libname, int flags) { shlFlags |= BIND_IMMEDIATE; } - m_handle = shl_load(libname.c_str(), BIND_DEFERRED, 0); + 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" + #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__) - const wxChar *err = dlerror(); + +#if wxUSE_UNICODE + wxWCharBuffer buffer = wxConvLocal.cMB2WC( dlerror() ); + const wxChar *err = buffer; +#else + const wxChar *err = dlerror(); +#endif + if( err ) wxLogError( msg, err ); #else @@ -240,10 +261,13 @@ void *wxDynamicLibrary::GetSymbol(const wxString &name, bool *success) const DosQueryProcAddr( m_handle, 1L, name.c_str(), (PFN*)symbol ); #elif defined(HAVE_DLOPEN) || defined(__DARWIN__) - symbol = dlsym( m_handle, name.c_str() ); + symbol = dlsym( m_handle, name.fn_str() ); #elif defined(HAVE_SHL_LOAD) - if( shl_findsym( &m_handle, name.c_str(), TYPE_UNDEFINED, &symbol ) != 0 ) + // 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__) @@ -255,13 +279,18 @@ void *wxDynamicLibrary::GetSymbol(const wxString &name, bool *success) const if ( !symbol ) { - wxString msg(_("wxDynamicLibrary failed to GetSymbol '%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 ) { - failed = TRUE; - wxLogError( msg, err ); + wxLogError(wxT("%s"), err); } #else failed = TRUE; @@ -286,10 +315,22 @@ wxDLImports* wxPluginLibrary::ms_classes = NULL; class wxPluginLibraryModule : public wxModule { public: - wxPluginLibraryModule() {} - bool OnInit() { wxPluginLibrary::ms_classes = new wxDLImports(wxKEY_STRING); wxPluginManager::CreateManifest(); return TRUE; } - void OnExit() { delete wxPluginLibrary::ms_classes; wxPluginLibrary::ms_classes = NULL; - wxPluginManager::ClearManifest(); } + wxPluginLibraryModule() { } + + // TODO: create ms_classes on demand, why always preallocate it? + virtual bool OnInit() + { + wxPluginLibrary::ms_classes = new wxDLImports(wxKEY_STRING); + wxPluginManager::CreateManifest(); + return TRUE; + } + + virtual void OnExit() + { + delete wxPluginLibrary::ms_classes; + wxPluginLibrary::ms_classes = NULL; + wxPluginManager::ClearManifest(); + } private: DECLARE_DYNAMIC_CLASS(wxPluginLibraryModule ) @@ -312,7 +353,10 @@ wxPluginLibrary::wxPluginLibrary(const wxString &libname, int flags) RegisterModules(); } else - --m_linkcount; // Flag us for deletion + { + // Flag us for deletion + --m_linkcount; + } } wxPluginLibrary::~wxPluginLibrary() @@ -324,14 +368,26 @@ wxPluginLibrary::~wxPluginLibrary() } } +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 ) { delete this; return TRUE; } + return FALSE; } @@ -362,9 +418,7 @@ void wxPluginLibrary::UpdateClassInfo() // 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->m_className] = this; } } @@ -384,7 +438,7 @@ void wxPluginLibrary::RestoreClassInfo() for(info = m_after; info != m_before; info = info->m_next) { wxClassInfo::sm_classTable->Delete(info->m_className); - ms_classes->Delete(info->m_className); + ms_classes->erase(ms_classes->find(info->m_className)); } if( wxClassInfo::sm_first == m_after ) @@ -394,7 +448,7 @@ void wxPluginLibrary::RestoreClassInfo() 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")) + wxASSERT_MSG( info, _T("ClassInfo from wxPluginLibrary not found on purge")); info->m_next = m_before; } @@ -413,7 +467,7 @@ 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 ( wxClassInfo *info = m_after; info != m_before; info = info->m_next) { if( info->IsKindOf(CLASSINFO(wxModule)) ) { @@ -428,7 +482,9 @@ void wxPluginLibrary::RegisterModules() // FIXME: Likewise this is (well was) very similar to InitializeModules() - for(wxModuleList::Node *node = m_wxmodules.GetFirst(); node; node->GetNext()) + for ( wxModuleList::Node *node = m_wxmodules.GetFirst(); + node; + node = node->GetNext()) { if( !node->GetData()->Init() ) { @@ -459,10 +515,10 @@ void wxPluginLibrary::UnregisterModules() { wxModuleList::Node *node; - for(node = m_wxmodules.GetFirst(); node; node->GetNext()) + for ( node = m_wxmodules.GetFirst(); node; node = node->GetNext() ) node->GetData()->Exit(); - for(node = m_wxmodules.GetFirst(); node; node->GetNext()) + for ( node = m_wxmodules.GetFirst(); node; node = node->GetNext() ) wxModule::UnregisterModule( node->GetData() ); m_wxmodules.DeleteContents(TRUE); @@ -470,7 +526,7 @@ void wxPluginLibrary::UnregisterModules() // --------------------------------------------------------------------------- -// wxPluginLibrary +// wxPluginManager // --------------------------------------------------------------------------- wxDLManifest* wxPluginManager::ms_manifest = NULL; @@ -479,64 +535,113 @@ wxDLManifest* wxPluginManager::ms_manifest = NULL; // Static accessors // ------------------------ -wxPluginLibrary *wxPluginManager::LoadLibrary(const wxString &libname, int 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 ( flags & wxDL_NOSHARE ) + { + entry = NULL; + } + else + { + entry = FindByName(realname); + } - if( entry != 0 ) + 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 ( !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; + } + + ms_manifest->erase(ms_manifest->find(realname)); + + return TRUE; } #if WXWIN_COMPATIBILITY_2_2 wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) { - wxNode *node; - ms_manifest->BeginFind(); + for ( wxDLManifest::iterator i = ms_manifest->begin(); + i != ms_manifest->end(); + ++i ) + { + wxPluginLibrary * const lib = i->second; - for(node = ms_manifest->Next(); node; node = ms_manifest->Next()) - if( ((wxPluginLibrary*)node->GetData())->GetLibHandle() == handle ) - return (wxPluginLibrary*)node->GetData(); + if ( lib->GetLibHandle() == handle ) + return lib; + } - return 0; + return NULL; } -#endif +#endif // WXWIN_COMPATIBILITY_2_2 // ------------------------ // Class implementation @@ -545,25 +650,28 @@ wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) 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. + wxCHECK_RET( m_entry, _T("unloading an invalid wxPluginManager?") ); - for(node = ms_manifest->Next(); node; node = ms_manifest->Next()) - if( (wxPluginLibrary*)node->GetData() == m_entry ) - break; - - if( m_entry && m_entry->UnrefLib() ) + for ( wxDLManifest::iterator i = ms_manifest->begin(); + i != ms_manifest->end(); + ++i ) { - delete node; - m_entry = 0; + if ( i->second == m_entry ) + { + ms_manifest->erase(i); + return; + } } + + m_entry->UnrefLib(); + + m_entry = NULL; } // --------------------------------------------------------------------------- @@ -572,21 +680,44 @@ void wxPluginManager::Unload() #if WXWIN_COMPATIBILITY_2_2 -wxDllType wxDllLoader::LoadLibrary(const wxString &name) +wxDllType wxDllLoader::LoadLibrary(const wxString &name, bool *success) { - wxPluginLibrary *p = wxPluginManager::LoadLibrary(name, wxDL_DEFAULT | wxDL_VERBATIM); - return p->GetLibHandle(); + wxPluginLibrary *p = wxPluginManager::LoadLibrary + ( + name, + wxDL_DEFAULT | wxDL_VERBATIM | wxDL_NOSHARE + ); + + if ( success ) + *success = p != NULL; + + return p ? p->GetLibHandle() : 0; } void wxDllLoader::UnloadLibrary(wxDllType handle) { wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(handle); + + wxCHECK_RET( p, _T("Unloading a library not loaded with wxDllLoader?") ); + p->UnrefLib(); } -void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) +void * +wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) { wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(dllHandle); + + if ( !p ) + { + wxFAIL_MSG( _T("Using a library not loaded with wxDllLoader?") ); + + if ( success ) + *success = FALSE; + + return NULL; + } + return p->GetSymbol(name, success); } @@ -594,4 +725,3 @@ void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *su #endif // wxUSE_DYNAMIC_LOADER -// vi:sts=4:sw=4:et