// Created: 20/07/98
// RCS-ID: $Id$
// Copyright: (c) Guilhem Lavaux
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// ----------------------------------------------------------------------------
#ifdef __GNUG__
- #pragma implementation "dynlib.h"
+# pragma implementation "dynlib.h"
#endif
#include "wx/wxprec.h"
-#ifdef __BORLANDC__
+#ifdef __BORLANDC__
#pragma hdrstop
-#endif //__BORLANDC__
+#endif
+
+#if wxUSE_DYNLIB_CLASS && !wxUSE_DYNAMIC_LOADER
+
+#if defined(__WINDOWS__)
+ #include "wx/msw/private.h"
+#endif
#include "wx/dynlib.h"
#include "wx/filefn.h"
#include "wx/intl.h"
#include "wx/log.h"
+#if defined(__WXMAC__)
+ #include "wx/mac/private.h"
+#endif
+
// ----------------------------------------------------------------------------
// conditional compilation
// ----------------------------------------------------------------------------
-#if defined(HAVE_DLOPEN)
- #define wxDllOpen(lib) dlopen(lib, RTLD_LAZY)
- #define wxDllGetSymbol(handle, name) dlsym(handle, (char *)name)
- #define wxDllClose dlclose
-#elif defined(HAVE_SHLLOAD)
- #define wxDllOpen(lib) shl_open(lib, BIND_DEFERRED, 0)
- #define wxDllClose shl_unload
+#if defined(__WXPM__) || defined(__EMX__)
+# define INCL_DOS
+# include <os2.h>
+# 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
- static inline void *wxDllGetSymbol(shl_t *handle, const char *name)
- {
- void *sym;
- if ( shl_findsym(handle, name, TYPE_UNDEFINED, &sym) == 0 )
- return sym;
- else
- return (void *)0;
- }
+static inline void *wxDllGetSymbol(shl_t handle, const wxString& name)
+{
+ void *sym;
+ if ( shl_findsym(&handle, name.mb_str(), TYPE_UNDEFINED, &sym) == 0 )
+ return sym;
+ else
+ return 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__)
- #define wxDllOpen(lib) ::LoadLibrary(lib)
- #define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name)
- #define wxDllClose ::FreeLibrary
+ // 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(&((CFragConnectionID)handle))
#else
- #error "Don't know how to load shared libraries on this platform."
+# error "Don't know how to load shared libraries on this platform."
#endif // OS
// ---------------------------------------------------------------------------
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__)
- fullname << ".so";
-#elif defined(__WINDOWS__)
- fullname << ".dll";
-#endif
+ wxString fullname;
+ fullname << basename << wxDllLoader::GetDllExt();
return fullname;
}
-// ============================================================================
-// implementation
-// ============================================================================
-
// ---------------------------------------------------------------------------
// wxLibrary (one instance per dynamic library)
// ---------------------------------------------------------------------------
m_handle = handle;
// Some system may use a local heap for library.
- get_first = (t_get_first)GetSymbol("wxGetClassFirst");
+ get_first = (t_get_first)GetSymbol(_T("wxGetClassFirst"));
// It is a wxWindows DLL.
if (get_first)
PrepareClasses(get_first());
{
if (info->m_className)
classTable.Put(info->m_className, (wxObject *)info);
- info = info->GetNext();
+ info = info->m_next;
}
// Set base pointers for each wxClassInfo
void *wxLibrary::GetSymbol(const wxString& symbname)
{
- void *symbol = NULL; // return value
+ return wxDllLoader::GetSymbol(m_handle, symbname);
+}
-#if defined( __WXMAC__ )
- Ptr symAddress ;
- CFragSymbolClass symClass ;
- Str255 symName ;
+// ---------------------------------------------------------------------------
+// wxDllLoader
+// ---------------------------------------------------------------------------
- strcpy( (char*) symName , symbname ) ;
- c2pstr( (char*) symName ) ;
- if ( FindSymbol( m_handle , symName , &symAddress , &symClass ) == noErr )
+#if defined(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__)
+const wxString wxDllLoader::ms_dllext( _T(".dll") );
+#elif defined(__UNIX__)
+#if defined(__HPUX__)
+const wxString wxDllLoader::ms_dllext( _T(".sl") );
+#else
+const wxString wxDllLoader::ms_dllext( _T(".so") );
+#endif
+#elif defined(__WXMAC__)
+const wxString wxDllLoader::ms_dllext( _T("") );
+#endif
+
+/* static */
+wxDllType wxDllLoader::GetProgramHandle()
+{
+#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 & libname, bool *success)
+{
+ wxDllType handle;
+ bool failed = FALSE;
+
+#if defined(__WXMAC__) && !defined(__UNIX__)
+ FSSpec myFSSpec;
+ Ptr myMainAddr;
+ Str255 myErrName;
+
+ wxMacFilename2FSSpec( libname , &myFSSpec );
+
+ if( GetDiskFragment( &myFSSpec,
+ 0,
+ kCFragGoesToEOF,
+ "\p",
+ kPrivateCFragCopy,
+ &((CFragConnectionID)handle),
+ &myMainAddr,
+ myErrName ) != noErr )
{
- symbol = (void *)symAddress ;
+ p2cstr( myErrName );
+ wxLogSysError( _("Failed to load shared library '%s' Error '%s'"),
+ libname.c_str(),
+ (char*)myErrName );
+ handle = 0;
+ failed = TRUE;
}
+
+#elif defined(__WXPM__) || defined(__EMX__)
+ char zError[256] = "";
+ wxDllOpen(zError, libname, handle);
+
+#else
+ handle = wxDllOpen(libname);
+
+#endif
+
+ if ( !handle )
+ {
+ wxString msg(_("Failed to load shared library '%s'"));
+
+#ifdef HAVE_DLERROR
+ const wxChar *err = dlerror();
+ if( err )
+ {
+ failed = TRUE;
+ wxLogError( msg, err );
+ }
#else
- // VZ: hmm... why is WXSTRINGCAST needed? if it's really modified, we
- // should make a copy of it
- symbol = wxDllGetSymbol(m_handle, WXSTRINGCAST symbname);
+ failed = TRUE;
+ wxLogSysError( msg, libname.c_str() );
#endif
+ }
+
+ if ( success )
+ *success = !failed;
+
+ return handle;
+}
+
+
+/* static */
+void wxDllLoader::UnloadLibrary(wxDllType handle)
+{
+ wxDllClose(handle);
+}
+
+/* static */
+void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success)
+{
+ bool failed = FALSE;
+ void *symbol = 0;
+
+#if defined(__WXMAC__) && !defined(__UNIX__)
+ Ptr symAddress;
+ CFragSymbolClass symClass;
+ Str255 symName;
+
+ wxMacStringToPascal( name.c_str() , symName ) ;
+
+ if( FindSymbol( ((CFragConnectionID)dllHandle), symName, &symAddress, &symClass ) == noErr )
+ symbol = (void *)symAddress;
+
+#elif defined(__WXPM__) || defined(__EMX__)
+ wxDllGetSymbol(dllHandle, symbol);
+
+#else // Windows or Unix
+
+ // mb_str() is necessary in Unicode build
+ //
+ // "void *" cast is needed by gcc 3.1 + w32api 1.4, don't ask me why
+ symbol = (void *)wxDllGetSymbol(dllHandle, name.mb_str());
+
+#endif // OS
if ( !symbol )
{
+#ifdef HAVE_DLERROR
+ const wxChar *err = dlerror();
+ if( err )
+ {
+ wxLogError(wxT("%s"), err);
+ }
+#else
+ failed = TRUE;
wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
- symbname.c_str());
+ name.c_str());
+#endif
}
+ if( success )
+ *success = !failed;
+
return symbol;
}
// wxLibraries (only one instance should normally exist)
// ---------------------------------------------------------------------------
-wxLibraries::wxLibraries()
+wxLibraries::wxLibraries():m_loaded(wxKEY_STRING)
{
}
wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
{
- wxNode *node;
- wxLibrary *lib;
+ wxLibrary *lib;
wxClassInfo *old_sm_first;
+ wxNode *node = m_loaded.Find(name.GetData());
- if ( (node = m_loaded.Find(name.GetData())) )
+ if (node != NULL)
return ((wxLibrary *)node->Data());
// If DLL shares data, this is necessary.
old_sm_first = wxClassInfo::sm_first;
wxClassInfo::sm_first = NULL;
- wxString lib_name = ConstructLibraryName(name);
-
-#if defined(__UNIX__)
- // TODO use LD_LIBRARY_PATH!
- lib_name.Prepend("/lib");
-#endif // __UNIX__
-
- 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 ;
- }
-#else // !Mac
- handle = wxDllOpen(lib_name);
-#endif // OS
+ wxString libname = ConstructLibraryName(name);
- if ( !handle )
+ bool success = FALSE;
+ wxDllType handle = wxDllLoader::LoadLibrary(libname, &success);
+ if(success)
{
- wxLogSysError(_("Failed to load shared library '%s'"),
- lib_name.c_str());
+ lib = new wxLibrary(handle);
+ wxClassInfo::sm_first = old_sm_first;
- return NULL;
+ m_loaded.Append(name.GetData(), lib);
}
-
- lib = new wxLibrary(handle);
-
- wxClassInfo::sm_first = old_sm_first;
-
- m_loaded.Append(name.GetData(), lib);
-
+ else
+ lib = NULL;
return lib;
}
}
return NULL;
}
+
+#endif // wxUSE_DYNLIB_CLASS && !wxUSE_DYNAMIC_LOADER
+
+#if defined(__DARWIN__) && (wxUSE_DYNLIB_CLASS || wxUSE_DYNAMIC_LOADER)
+// ---------------------------------------------------------------------------
+// For Darwin/Mac OS X
+// supply the sun style dlopen functions in terms of Darwin NS*
+// ---------------------------------------------------------------------------
+
+#include <stdio.h>
+#include <mach-o/dyld.h>
+
+static char dl_last_error[1024];
+
+static
+void TranslateError(const char *path, 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]))
+
+ index = number;
+ if (index > NUM_OFI_ERRORS - 1) {
+ index = NUM_OFI_ERRORS - 1;
+ }
+ sprintf(dl_last_error, OFIErrorStrings[index], path, number);
+}
+
+const char *dlerror()
+{
+ return dl_last_error;
+}
+
+void *dlopen(const char *path, int WXUNUSED(mode) /* mode is ignored */)
+{
+ int dyld_result;
+ NSObjectFileImage ofile;
+ NSModule handle = NULL;
+
+ dyld_result = NSCreateObjectFileImageFromFile(path, &ofile);
+ if (dyld_result != NSObjectFileImageSuccess)
+ {
+ TranslateError(path, 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, NSLINKMODULE_OPTION_BINDNOW);
+ }
+
+ return handle;
+}
+
+int dlclose(void *handle)
+{
+ NSUnLinkModule( handle, NSUNLINKMODULE_OPTION_NONE);
+ return 0;
+}
+
+void *dlsym(void *handle, const char *symbol)
+{
+ void *addr;
+
+ NSSymbol nsSymbol = NSLookupSymbolInModule( handle , symbol ) ;
+
+ if ( nsSymbol)
+ {
+ addr = NSAddressOfSymbol(nsSymbol);
+ }
+ else
+ {
+ addr = NULL;
+ }
+ return addr;
+}
+
+#endif // defined(__DARWIN__) && (wxUSE_DYNLIB_CLASS || wxUSE_DYNAMIC_LOADER)
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