X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/016105291a38f62a4811025653947cb4f8da765e..e7e52b6d2fa1021a0fcf1a507ed8742c71b0da50:/src/common/dynload.cpp diff --git a/src/common/dynload.cpp b/src/common/dynload.cpp index 3b2ff4bf0e..6341b6d593 100644 --- a/src/common/dynload.cpp +++ b/src/common/dynload.cpp @@ -37,127 +37,46 @@ #include "wx/dynload.h" -// ---------------------------------------------------------------------------- -// conditional compilation -// ---------------------------------------------------------------------------- - -#if defined(__WXPM__) || defined(__EMX__) -#define INCL_DOS -#include -#define wxDllOpen(error, lib, handle) DosLoadModule(error, sizeof(error), lib, &handle) -#define wxDllGetSymbol(handle, modaddr) DosQueryProcAddr(handle, 1L, NULL, (PFN*)modaddr) -#define wxDllClose(handle) DosFreeModule(handle) - -#elif defined(HAVE_DLOPEN) - // note about dlopen() flags: we use RTLD_NOW to have more Windows-like - // behaviour (Win won't let you load a library with missing symbols) and - // RTLD_GLOBAL because it is needed sometimes and probably doesn't hurt - // otherwise. On True64-Unix RTLD_GLOBAL is not allowed and on VMS the - // second argument on dlopen is ignored. - -#ifdef __VMS -#define wxDllOpen(lib) dlopen(lib.fn_str(), 0) - -#elif defined( __osf__ ) -#define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY) - -#else -#define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY | RTLD_GLOBAL) -#endif // __VMS - -#define wxDllGetSymbol(handle, name) dlsym(handle, name) -#define wxDllClose dlclose - -#elif defined(HAVE_SHL_LOAD) -#define wxDllOpen(lib) shl_load(lib.fn_str(), BIND_DEFERRED, 0) -#define wxDllClose shl_unload - -static inline void *wxDllGetSymbol(shl_t handle, const wxString& name) -{ - void *sym; - return ( shl_findsym(&handle, name.mb_str(), TYPE_UNDEFINED, &sym) == 0 ) - ? sym : 0; -} - -#elif 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); - -#define wxDllOpen(lib) dlopen(lib.fn_str(), 0) -#define wxDllGetSymbol(handle, name) dlsym(handle, name) -#define wxDllClose dlclose - -#elif defined(__WINDOWS__) - - // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary - -#ifdef __WIN32__ - -#ifdef _UNICODE -#define wxDllOpen(lib) ::LoadLibraryExW(lib, 0, 0) -#else -#define wxDllOpen(lib) ::LoadLibraryExA(lib, 0, 0) -#endif - -#else // Win16 -#define wxDllOpen(lib) ::LoadLibrary(lib) -#endif // Win32/16 -#define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name) -#define wxDllClose ::FreeLibrary - -#elif defined(__WXMAC__) -#define wxDllClose(handle) CloseConnection(&handle) -#else -#error "Don't know how to load shared libraries on this platform." -#endif - // ============================================================================ // implementation // ============================================================================ // --------------------------------------------------------------------------- -// wxDllLoader (all these methods are static) +// 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 wxString wxDllLoader::ms_dllext( _T(".dll") ); +const wxString wxDynamicLibrary::ms_dllext( _T(".dll") ); #elif defined(__UNIX__) #if defined(__HPUX__) -const wxString wxDllLoader::ms_dllext( _T(".sl") ); +const wxString wxDynamicLibrary::ms_dllext( _T(".sl") ); #else -const wxString wxDllLoader::ms_dllext( _T(".so") ); +const wxString wxDynamicLibrary::ms_dllext( _T(".so") ); #endif #endif -wxDllType wxDllLoader::GetProgramHandle() +wxDllType wxDynamicLibrary::GetProgramHandle() { #if defined( HAVE_DLOPEN ) && !defined(__EMX__) - // obtain handle for main program - return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); + return dlopen(0, RTLD_LAZY); #elif defined (HAVE_SHL_LOAD) - // shl_findsymbol with NULL handle looks up in main program - return 0; + return PROG_HANDLE; #else wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2")); return 0; #endif } -wxDllType wxDllLoader::LoadLibrary(const wxString &name) +bool wxDynamicLibrary::Load(wxString libname, wxDLFlags flags) { - wxString libname( name + wxDllLoader::GetDllExt() ); - wxDllType handle; + wxASSERT_MSG(m_handle == 0, _T("Library already loaded.")); + + if( !(flags & wxDL_VERBATIM) ) + libname += GetDllExt(); #if defined(__WXMAC__) && !defined(__UNIX__) FSSpec myFSSpec; @@ -171,7 +90,7 @@ wxDllType wxDllLoader::LoadLibrary(const wxString &name) kCFragGoesToEOF, "\p", kPrivateCFragCopy, - &handle, + &m_handle, &myMainAddr, myErrName ) != noErr ) { @@ -179,16 +98,79 @@ wxDllType wxDllLoader::LoadLibrary(const wxString &name) wxLogSysError( _("Failed to load shared library '%s' Error '%s'"), libname.c_str(), (char*)myErrName ); - handle = 0; + m_handle = 0; } #elif defined(__WXPM__) || defined(__EMX__) - char zError[256] = ""; - wxDllOpen(zError, libname, handle); + 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()); + #else - handle = wxDllOpen(libname); +#error "runtime shared lib support not implemented" #endif - if ( !handle ) + + if ( m_handle == 0 ) { wxString msg(_("Failed to load shared library '%s'")); #ifdef HAVE_DLERROR @@ -199,16 +181,36 @@ wxDllType wxDllLoader::LoadLibrary(const wxString &name) wxLogSysError( msg, libname.c_str() ); #endif } - return handle; + + return IsLoaded(); } -void wxDllLoader::UnloadLibrary(wxDllType handle) +void wxDynamicLibrary::Unload() { - wxDllClose(handle); + if( IsLoaded() ) + { +#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; + } } -void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) +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; @@ -219,23 +221,36 @@ void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *su #if TARGET_CARBON c2pstrcpy( (StringPtr) symName, name ); #else - strcpy( (char *) symName, name ); - c2pstr( (char *) symName ); + strcpy( (char *)symName, name ); + c2pstr( (char *)symName ); #endif if( FindSymbol( dllHandle, symName, &symAddress, &symClass ) == noErr ) symbol = (void *)symAddress; #elif defined(__WXPM__) || defined(__EMX__) - wxDllGetSymbol(dllHandle, symbol); -#else + DosQueryProcAddr( m_handle, 1L, name.c_str(), (PFN*)symbol ); + +#elif defined(HAVE_DLOPEN) + symbol = dlsym( m_handle, name.c_str() ); - // mb_str() is necessary in Unicode build - symbol = wxDllGetSymbol(dllHandle, name.mb_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(_("wxDllLoader failed to GetSymbol '%s'")); + wxString msg(_("wxDynamicLibrary failed to GetSymbol '%s'")); #ifdef HAVE_DLERROR const wxChar *err = dlerror(); if( err ) @@ -257,19 +272,20 @@ void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *su // --------------------------------------------------------------------------- -// wxDLManifestEntry +// wxPluginLibrary // --------------------------------------------------------------------------- -wxDLImports wxDLManifestEntry::ms_classes(wxKEY_STRING); +wxDLImports wxPluginLibrary::ms_classes(wxKEY_STRING); -wxDLManifestEntry::wxDLManifestEntry( const wxString &libname ) - : m_before(wxClassInfo::sm_first) - , m_handle(wxDllLoader::LoadLibrary( libname )) - , m_after(wxClassInfo::sm_first) - , m_linkcount(1) +wxPluginLibrary::wxPluginLibrary(const wxString &libname, wxDLFlags flags) + : m_linkcount(1) , m_objcount(0) { + m_before = wxClassInfo::sm_first; + Load( libname, flags ); + m_after = wxClassInfo::sm_first; + if( m_handle != 0 ) { UpdateClassInfo(); @@ -279,17 +295,16 @@ wxDLManifestEntry::wxDLManifestEntry( const wxString &libname ) --m_linkcount; // Flag us for deletion } -wxDLManifestEntry::~wxDLManifestEntry() +wxPluginLibrary::~wxPluginLibrary() { if( m_handle != 0 ) { UnregisterModules(); RestoreClassInfo(); - wxDllLoader::UnloadLibrary(m_handle); } } -bool wxDLManifestEntry::UnrefLib() +bool wxPluginLibrary::UnrefLib() { wxASSERT_MSG( m_objcount == 0, _T("Library unloaded before all objects were destroyed") ); if( m_linkcount == 0 || --m_linkcount == 0 ) @@ -304,7 +319,7 @@ bool wxDLManifestEntry::UnrefLib() // Private methods // ------------------------ -void wxDLManifestEntry::UpdateClassInfo() +void wxPluginLibrary::UpdateClassInfo() { wxClassInfo *info; wxHashTable *t = wxClassInfo::sm_classTable; @@ -342,7 +357,7 @@ void wxDLManifestEntry::UpdateClassInfo() } } -void wxDLManifestEntry::RestoreClassInfo() +void wxPluginLibrary::RestoreClassInfo() { wxClassInfo *info; @@ -359,13 +374,13 @@ void wxDLManifestEntry::RestoreClassInfo() info = wxClassInfo::sm_first; while( info->m_next && info->m_next != m_after ) info = info->m_next; - wxASSERT_MSG( info, _T("ClassInfo from wxDynamicLibrary not found on purge")) + wxASSERT_MSG( info, _T("ClassInfo from wxPluginLibrary not found on purge")) info->m_next = m_before; } } -void wxDLManifestEntry::RegisterModules() +void wxPluginLibrary::RegisterModules() { // Plugin libraries might have wxModules, Register and initialise them if // they do. @@ -397,7 +412,7 @@ void wxDLManifestEntry::RegisterModules() { if( !node->GetData()->Init() ) { - wxLogDebug(_T("wxModule::Init() failed for wxDynamicLibrary")); + wxLogDebug(_T("wxModule::Init() failed for wxPluginLibrary")); // XXX: Watch this, a different hash implementation might break it, // a good hash implementation would let us fix it though. @@ -420,7 +435,7 @@ void wxDLManifestEntry::RegisterModules() } } -void wxDLManifestEntry::UnregisterModules() +void wxPluginLibrary::UnregisterModules() { wxModuleList::Node *node; @@ -435,30 +450,35 @@ void wxDLManifestEntry::UnregisterModules() // --------------------------------------------------------------------------- -// wxDynamicLibrary +// wxPluginLibrary // --------------------------------------------------------------------------- -wxDLManifest wxDynamicLibrary::ms_manifest(wxKEY_STRING); +wxDLManifest wxPluginManager::ms_manifest(wxKEY_STRING); // ------------------------ // Static accessors // ------------------------ -wxDLManifestEntry *wxDynamicLibrary::Link(const wxString &libname) +wxPluginLibrary *wxPluginManager::LoadLibrary(const wxString &libname, wxDLFlags flags) { - wxDLManifestEntry *entry = (wxDLManifestEntry*) ms_manifest.Get(libname); + wxString realname(libname); - if( entry ) + if( !(flags & wxDL_VERBATIM) ) + realname += wxDynamicLibrary::GetDllExt(); + + wxPluginLibrary *entry = (wxPluginLibrary*) ms_manifest.Get(realname); + + if( entry != 0 ) { entry->RefLib(); } else { - entry = new wxDLManifestEntry( libname ); + entry = new wxPluginLibrary( libname, flags ); if( entry->IsLoaded() ) { - ms_manifest.Put(libname, (wxObject*) entry); + ms_manifest.Put(realname, (wxObject*) entry); } else { @@ -470,39 +490,45 @@ wxDLManifestEntry *wxDynamicLibrary::Link(const wxString &libname) return entry; } -bool wxDynamicLibrary::Unlink(const wxString &libname) +bool wxPluginManager::UnloadLibrary(const wxString &libname) { - wxDLManifestEntry *entry = (wxDLManifestEntry*) ms_manifest.Get(libname); + wxPluginLibrary *entry = (wxPluginLibrary*) ms_manifest.Get(libname); + + if( !entry ) + entry = (wxPluginLibrary*) ms_manifest.Get(libname + wxDynamicLibrary::GetDllExt()); if( entry ) return entry->UnrefLib(); wxLogDebug(_T("Attempt to Unlink library '%s' (which is not linked)."), libname.c_str()); + return FALSE; +} + +#if WXWIN_COMPATIBILITY_2_2 +wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle) +{ + wxNode *node; + ms_manifest.BeginFind(); + + for(node = ms_manifest.Next(); node; node = ms_manifest.Next()) + if( ((wxPluginLibrary*)node->GetData())->GetLibHandle() == handle ) + return (wxPluginLibrary*)node->GetData(); + return 0; } +#endif // ------------------------ // Class implementation // ------------------------ -wxDynamicLibrary::wxDynamicLibrary(const wxString &libname) +bool wxPluginManager::Load(const wxString &libname, wxDLFlags flags) { - m_entry = (wxDLManifestEntry*) ms_manifest.Get(libname); - - if( m_entry != 0 ) - { - m_entry->RefLib(); - } - else - { - m_entry = new wxDLManifestEntry( libname ); - ms_manifest.Put(libname, (wxObject*) m_entry); - - wxASSERT_MSG( m_entry != 0, _T("Failed to create manifest entry") ); - } + m_entry = wxPluginManager::LoadLibrary(libname, flags); + return IsLoaded(); } -wxDynamicLibrary::~wxDynamicLibrary() +void wxPluginManager::Unload() { wxNode *node; ms_manifest.BeginFind(); @@ -510,11 +536,14 @@ wxDynamicLibrary::~wxDynamicLibrary() // 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( (wxDLManifestEntry*)node->GetData() == m_entry ) + if( (wxPluginLibrary*)node->GetData() == m_entry ) break; if( m_entry && m_entry->UnrefLib() ) + { delete node; + m_entry = 0; + } } @@ -535,8 +564,7 @@ enum dyldErrorSource static char dl_last_error[1024]; -static -void TranslateError(const char *path, enum dyldErrorSource type, int number) +static void TranslateError(const char *path, enum dyldErrorSource type, int number) { unsigned int index; static char *OFIErrorStrings[] = @@ -568,44 +596,35 @@ void TranslateError(const char *path, enum dyldErrorSource type, int number) } } -const char *dlerror() -{ - return dl_last_error; -} -void *dlopen(const char *path, int mode /* mode is ignored */) -{ - int dyld_result; - NSObjectFileImage ofile; - NSModule handle = 0; +#endif // __DARWIN__ - dyld_result = NSCreateObjectFileImageFromFile(path, &ofile); - if(dyld_result != NSObjectFileImageSuccess) - { - TranslateError(path, 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. - handle = NSLinkModule(ofile, path, TRUE); - } - return handle; +// --------------------------------------------------------------------------- +// wxDllLoader (all these methods are static) +// --------------------------------------------------------------------------- + +#if WXWIN_COMPATIBILITY_2_2 + +wxDllType wxDllLoader::LoadLibrary(const wxString &name) +{ + wxPluginLibrary *p = wxPluginManager::LoadLibrary(name, wxDL_DEFAULT | wxDL_VERBATIM); + return p->GetLibHandle(); } -int dlclose(void *handle) /* stub only */ +void wxDllLoader::UnloadLibrary(wxDllType handle) { - return 0; + wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(handle); + p->UnrefLib(); } -void *dlsym(void *handle, const char *symbol) +void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success) { - return NSIsSymbolNameDefined(symbol) - ? NSAddressOfSymbol( NSLookupAndBindSymbol(symbol) ) - : 0 ; + wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(dllHandle); + return p->GetSymbol(name, success); } -#endif // __DARWIN__ +#endif // WXWIN_COMPATIBILITY_2_2 + #endif // wxUSE_DYNAMIC_LOADER // vi:sts=4:sw=4:et