X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1a787c5dc89b1cb6a9ddb4ebef3ad2fb24b49c8c..e2f9212c00094f3032511bc7d42efc7c1b91134b:/src/common/dynlib.cpp diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp index f75c99e93f..3660cc21f8 100644 --- a/src/common/dynlib.cpp +++ b/src/common/dynlib.cpp @@ -22,15 +22,17 @@ #endif #include "wx/wxprec.h" -#if defined(__WINDOWS__) -#include "wx/msw/private.h" -#endif #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" @@ -48,12 +50,23 @@ # define wxDllGetSymbol(handle, modaddr) DosQueryProcAddr(handle, 1L, NULL, (PFN*)modaddr) # define wxDllClose(handle) DosFreeModule(handle) #elif defined(HAVE_DLOPEN) -# define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_NOW/*RTLD_LAZY*/) -# define wxDllGetSymbol(handle, name) dlsym(handle, name.mb_str()) + // 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) { @@ -63,15 +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__) // 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 @@ -82,34 +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(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__) - fullname << ".dll"; -#elif defined(__UNIX__) -# if defined(__HPUX__) - fullname << ".sl"; -# else //__HPUX__ - fullname << ".so"; -# endif //__HPUX__ -#endif + wxString fullname; + fullname << basename << wxDllLoader::GetDllExt(); return fullname; } -// ============================================================================ -// implementation -// ============================================================================ - - // --------------------------------------------------------------------------- // wxLibrary (one instance per dynamic library) // --------------------------------------------------------------------------- @@ -154,7 +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 @@ -178,16 +198,34 @@ 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*/); + return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); #elif defined (HAVE_SHL_LOAD) // shl_findsymbol with NULL handle looks up in main program - return 0; + return 0; #else wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2")); return 0; @@ -200,21 +238,21 @@ wxDllLoader::LoadLibrary(const wxString & libname, bool *success) { wxDllType handle; -#if defined(__WXMAC__) +#if defined(__WXMAC__) && !defined(__UNIX__) FSSpec myFSSpec ; - Ptr myMainAddr ; - Str255 myErrName ; + Ptr myMainAddr ; + Str255 myErrName ; - wxMacPathToFSSpec( libname , &myFSSpec ) ; + wxMacFilename2FSSpec( libname , &myFSSpec ) ; if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr , myErrName ) != noErr ) { p2cstr( myErrName ) ; - wxASSERT_MSG( 1 , (char*)myErrName ) ; - return NULL ; + wxLogSysError( _("Failed to load shared library '%s' Error '%s'") , libname.c_str() , (char*)myErrName ) ; + handle = NULL ; } #elif defined(__WXPM__) || defined(__EMX__) - char zError[256] = ""; + char zError[256] = ""; wxDllOpen(zError, libname, handle); #else // !Mac handle = wxDllOpen(libname); @@ -222,7 +260,33 @@ wxDllLoader::LoadLibrary(const wxString & libname, bool *success) if ( !handle ) { - wxLogSysError(_("Failed to load shared library '%s'"), libname.c_str()); + 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 ) @@ -247,20 +311,25 @@ wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name) { void *symbol = NULL; // return value -#if defined( __WXMAC__ ) +#if defined(__WXMAC__) && !defined(__UNIX__) Ptr symAddress ; CFragSymbolClass symClass ; - Str255 symName ; + Str255 symName ; - strcpy( (char*) symName , name ) ; - c2pstr( (char*) 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 ) @@ -302,7 +371,7 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name) if (node != NULL) return ((wxLibrary *)node->Data()); #else // !OS/2 - if ( (node = m_loaded.Find(name.GetData())) ) + if ( (node = m_loaded.Find(name.GetData())) != NULL) return ((wxLibrary *)node->Data()); #endif // If DLL shares data, this is necessary. @@ -368,4 +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