X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/73c5006d21d0bc2bd1564ed3187097c4b18083fc..da2b4b7a57f816723ed26dbbeca0549b9ce6735a:/src/common/dynlib.cpp?ds=inline diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp index 40bba2b170..3660cc21f8 100644 --- a/src/common/dynlib.cpp +++ b/src/common/dynlib.cpp @@ -23,12 +23,16 @@ #include "wx/wxprec.h" -#ifdef __BORLANDC__ -# pragma hdrstop -#endif //__BORLANDC__ +#ifdef __BORLANDC__ + #pragma hdrstop +#endif #if wxUSE_DYNLIB_CLASS +#if defined(__WINDOWS__) + #include "wx/msw/private.h" +#endif + #include "wx/dynlib.h" #include "wx/filefn.h" #include "wx/intl.h" @@ -39,13 +43,30 @@ // conditional compilation // ---------------------------------------------------------------------------- -#if defined(HAVE_DLOPEN) -# define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY) -# define wxDllGetSymbol(handle, name) dlsym(handle, name.mb_str()) +#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 +#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 +# define wxDllClose shl_unload static inline void *wxDllGetSymbol(shl_t handle, const wxString& name) { @@ -55,17 +76,36 @@ else return (void *)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__) -# include - // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary # ifdef __WIN32__ -# define wxDllOpen(lib) ::LoadLibraryEx(lib, 0, 0) +#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 // OS @@ -76,34 +116,20 @@ wxLibraries wxTheLibraries; -// ---------------------------------------------------------------------------- -// private functions -// ---------------------------------------------------------------------------- +// ============================================================================ +// 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(basename); - -#if defined(__UNIX__) -# if defined(__HPUX__) - fullname << ".sl"; -# else //__HPUX__ - fullname << ".so"; -# endif //__HPUX__ -#elif defined(__WINDOWS__) - fullname << ".dll"; -#endif + wxString fullname; + fullname << basename << wxDllLoader::GetDllExt(); return fullname; } -// ============================================================================ -// implementation -// ============================================================================ - - // --------------------------------------------------------------------------- // wxLibrary (one instance per dynamic library) // --------------------------------------------------------------------------- @@ -148,7 +174,7 @@ void wxLibrary::PrepareClasses(wxClassInfo *first) { if (info->m_className) classTable.Put(info->m_className, (wxObject *)info); - info = info->GetNext(); + info = (wxClassInfo *)info->GetNext(); } // Set base pointers for each wxClassInfo @@ -172,66 +198,144 @@ void *wxLibrary::GetSymbol(const wxString& symbname) // wxDllLoader // --------------------------------------------------------------------------- +/* static */ +wxString wxDllLoader::GetDllExt() +{ + wxString ext; + +#if defined(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__) + ext = _T(".dll"); +#elif defined(__UNIX__) +# if defined(__HPUX__) + ext = _T(".sl"); +# else //__HPUX__ + ext = _T(".so"); +# endif //__HPUX__ +#endif + + return ext; +} + +/* static */ +wxDllType +wxDllLoader::GetProgramHandle(void) +{ +#if defined( HAVE_DLOPEN ) && !defined(__EMX__) + // optain handle for main program + return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); +#elif defined (HAVE_SHL_LOAD) + // shl_findsymbol with NULL handle looks up in main program + return 0; +#else + wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2")); + return 0; +#endif +} + /* static */ wxDllType -wxDllLoader::LoadLibrary(const wxString & lib_name, bool *success) +wxDllLoader::LoadLibrary(const wxString & libname, bool *success) { - wxASSERT(success); - - wxDllType handle; - -#if defined(__WXMAC__) - FSSpec myFSSpec ; - Ptr myMainAddr ; - Str255 myErrName ; - - wxMacPathToFSSpec( lib_name , &myFSSpec ) ; - if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr , - myErrName ) != noErr ) - { - p2cstr( myErrName ) ; - wxASSERT_MSG( 1 , (char*)myErrName ) ; - return NULL ; - } + wxDllType handle; + +#if defined(__WXMAC__) && !defined(__UNIX__) + FSSpec myFSSpec ; + Ptr myMainAddr ; + Str255 myErrName ; + + wxMacFilename2FSSpec( libname , &myFSSpec ) ; + if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr , + myErrName ) != noErr ) + { + p2cstr( myErrName ) ; + wxLogSysError( _("Failed to load shared library '%s' Error '%s'") , libname.c_str() , (char*)myErrName ) ; + handle = NULL ; + } +#elif defined(__WXPM__) || defined(__EMX__) + char zError[256] = ""; + wxDllOpen(zError, libname, handle); #else // !Mac - handle = wxDllOpen(lib_name); + handle = wxDllOpen(libname); #endif // OS - if ( !handle ) - { - wxLogSysError(_("Failed to load shared library '%s'"), - lib_name.c_str()); - *success = FALSE; - return NULL; - } - *success = TRUE; - return handle; + if ( !handle ) + { + wxString msg(_("Failed to load shared library '%s'")); + +#ifdef HAVE_DLERROR + const char *errmsg = dlerror(); + if ( errmsg ) + { + // the error string format is "libname: ...", but we already have + // libname, so cut it off + const char *p = strchr(errmsg, ':'); + if ( p ) + { + if ( *++p == ' ' ) + p++; + } + else + { + p = errmsg; + } + + msg += _T(" (%s)"); + wxLogError(msg, libname.c_str(), p); + } + else +#endif // HAVE_DLERROR + { + wxLogSysError(msg, libname.c_str()); + } + } + + if ( success ) + { + *success = handle != 0; + } + + return handle; +} + + +/* static */ +void +wxDllLoader::UnloadLibrary(wxDllType handle) +{ + wxDllClose(handle); } /* static */ void * wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name) { - void *symbol = NULL; // return value - -#if defined( __WXMAC__ ) - Ptr symAddress ; - CFragSymbolClass symClass ; - Str255 symName ; - - strcpy( (char*) symName , name ) ; - c2pstr( (char*) symName ) ; - - if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr ) - symbol = (void *)symAddress ; + void *symbol = NULL; // return value + +#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__) + wxDllGetSymbol(dllHandle, symbol); #else - symbol = wxDllGetSymbol(dllHandle, name); + // mb_str() is necessary in Unicode build + symbol = wxDllGetSymbol(dllHandle, name.mb_str()); #endif if ( !symbol ) { - wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"), - name.c_str()); + wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"), + name.c_str()); } return symbol; } @@ -240,7 +344,7 @@ wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name) // wxLibraries (only one instance should normally exist) // --------------------------------------------------------------------------- -wxLibraries::wxLibraries() +wxLibraries::wxLibraries():m_loaded(wxKEY_STRING) { } @@ -262,14 +366,19 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name) wxLibrary *lib; wxClassInfo *old_sm_first; - if ( (node = m_loaded.Find(name.GetData())) ) +#if defined(__VISAGECPP__) + node = m_loaded.Find(name.GetData()); + if (node != NULL) return ((wxLibrary *)node->Data()); - +#else // !OS/2 + if ( (node = m_loaded.Find(name.GetData())) != NULL) + return ((wxLibrary *)node->Data()); +#endif // If DLL shares data, this is necessary. old_sm_first = wxClassInfo::sm_first; wxClassInfo::sm_first = NULL; - wxString lib_name = ConstructLibraryName(name); + wxString libname = ConstructLibraryName(name); /* Unix automatically builds that library name, at least for dlopen() @@ -280,16 +389,16 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name) wxString libPath("/lib:/usr/lib"); // system path first const char *envLibPath = getenv("LD_LIBRARY_PATH"); if ( envLibPath ) - libPath << ':' << envLibPath; - wxStringTokenizer tokenizer(libPath, _T(':')); + libPath << wxT(':') << envLibPath; + wxStringTokenizer tokenizer(libPath, wxT(':')); while ( tokenizer.HasMoreToken() ) { wxString fullname(tokenizer.NextToken()); - fullname << '/' << lib_name; + fullname << wxT('/') << libname; if ( wxFileExists(fullname) ) { - lib_name = fullname; + libname = fullname; // found the library break; @@ -301,7 +410,7 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name) #endif bool success = FALSE; - wxDllType handle = wxDllLoader::LoadLibrary(lib_name, &success); + wxDllType handle = wxDllLoader::LoadLibrary(libname, &success); if(success) { lib = new wxLibrary(handle); @@ -328,4 +437,100 @@ wxObject *wxLibraries::CreateObject(const wxString& path) return NULL; } +#ifdef __DARWIN__ +// --------------------------------------------------------------------------- +// For Darwin/Mac OS X +// supply the sun style dlopen functions in terms of Darwin NS* +// --------------------------------------------------------------------------- + +extern "C" { +#import +}; + +enum dyldErrorSource +{ + OFImage, +}; + +static char dl_last_error[1024]; + +static +void TranslateError(const char *path, enum dyldErrorSource type, int number) +{ + unsigned int index; + static char *OFIErrorStrings[] = + { + "%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; + } +} + +const char *dlerror() +{ + return dl_last_error; +} + +void *dlopen(const char *path, int mode /* mode is ignored */) +{ + int dyld_result; + NSObjectFileImage ofile; + NSModule handle = NULL; + + 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; +} + +int dlclose(void *handle) /* stub only */ +{ + return 0; +} + +void *dlsym(void *handle, const char *symbol) +{ + void *addr; + + if (NSIsSymbolNameDefined(symbol)) { + addr = NSAddressOfSymbol(NSLookupAndBindSymbol(symbol)); + } + else { + addr = NULL; + } + return addr; +} + +#endif // __DARWIN__ + #endif // wxUSE_DYNLIB_CLASS