Fixed old FIXME about unsigned result of sunstraction + a few changes to be able...

[wxWidgets.git] / src / common / dynload.cpp

diff --git a/src/common/dynload.cpp b/src/common/dynload.cpp
index 2255145493c02cb4fd5b3f833375be60d33af77e..854d7c3049f27648eba7911ca481d49f67d408d2 100644 (file)
--- a/src/common/dynload.cpp
+++ b/src/common/dynload.cpp
@@ -7,10 +7,10 @@
 // Created:      03/12/01
 // RCS-ID:       $Id$
 // Copyright:    (c) 2001 Ron Lee <ron@debian.org>
 // Created:      03/12/01
 // RCS-ID:       $Id$
 // Copyright:    (c) 2001 Ron Lee <ron@debian.org>

-// Licence:      wxWindows license
+// Licence:      wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

 #pragma implementation "dynload.h"
 #endif
 
 #pragma implementation "dynload.h"
 #endif
 


@@ -21,262 +21,61 @@
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #if wxUSE_DYNAMIC_LOADER
 
 #ifdef __WINDOWS__
 #endif
 
 #if wxUSE_DYNAMIC_LOADER
 
 #ifdef __WINDOWS__

-#include "wx/msw/private.h"
+    #include "wx/msw/private.h"

 #endif
 
 #ifndef WX_PRECOMP
 #endif
 
 #ifndef WX_PRECOMP

-#include "wx/log.h"
-#include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/intl.h"
+    #include "wx/hash.h"
+    #include "wx/utils.h"

 #endif
 
 #endif
 

+#include "wx/strconv.h"
+

 #include "wx/dynload.h"
 #include "wx/dynload.h"

+#include "wx/module.h"

 
 
 
 

-// ============================================================================
-// implementation
-// ============================================================================
-

 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------

-// wxDynamicLibrary
+// wxPluginLibrary

 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------
 

-//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 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
-#endif

 
 

-wxDllType wxDynamicLibrary::GetProgramHandle()
-{
-#if defined( HAVE_DLOPEN ) && !defined(__EMX__)
-   return dlopen(0, RTLD_LAZY);
-#elif defined (HAVE_SHL_LOAD)
-   return PROG_HANDLE;
-#else
-   wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2"));
-   return 0;
-#endif
-}
+wxDLImports*  wxPluginLibrary::ms_classes = NULL;

 
 

-bool wxDynamicLibrary::Load(wxString libname, int flags)
+class wxPluginLibraryModule : public wxModule

 {
 {

-    wxASSERT_MSG(m_handle == 0, _T("Library already loaded."));
-
-    if( !(flags & wxDL_VERBATIM) )
-        libname += GetDllExt();
-
-#if defined(__WXMAC__) && !defined(__UNIX__)
-    FSSpec      myFSSpec;
-    Ptr         myMainAddr;
-    Str255      myErrName;
-
-    wxMacFilename2FSSpec( libname , &myFSSpec );
-
-    if( GetDiskFragment( &myFSSpec,
-                         0,
-                         kCFragGoesToEOF,
-                         "\p",
-                         kPrivateCFragCopy,
-                         &m_handle,
-                         &myMainAddr,
-                         myErrName ) != noErr )
-    {
-        p2cstr( myErrName );
-        wxLogSysError( _("Failed to load shared library '%s' Error '%s'"),
-                       libname.c_str(),
-                       (char*)myErrName );
-        m_handle = 0;
-    }
-
-#elif defined(__WXPM__) || defined(__EMX__)
-    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
+public:
+    wxPluginLibraryModule() { }

 
 

-#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
-#error  "runtime shared lib support not implemented"
-#endif
-
-    if ( m_handle == 0 )
-    {
-        wxString msg(_("Failed to load shared library '%s'"));
-#ifdef HAVE_DLERROR
-        const wxChar  *err = dlerror();
-        if( err )
-            wxLogError( msg, err );
-#else
-        wxLogSysError( msg, libname.c_str() );
-#endif
-    }
-
-    return IsLoaded();
-}
-
-void wxDynamicLibrary::Unload()
-{
-    if( IsLoaded() )
+    // TODO: create ms_classes on demand, why always preallocate it?
+    virtual bool OnInit()

     {
     {

-#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;
+        wxPluginLibrary::ms_classes = new wxDLImports;
+        wxPluginManager::CreateManifest();
+        return true;

     }
     }

-}
-
-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;
-
-#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__)
-    DosQueryProcAddr( m_handle, 1L, name.c_str(), (PFN*)symbol );
-
-#elif defined(HAVE_DLOPEN)
-    symbol = dlsym( m_handle, name.c_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.mb_str() );
-
-#else
-#error  "runtime shared lib support not implemented"
-#endif

 
 

-    if ( !symbol )
+    virtual void OnExit()

     {
     {

-        wxString msg(_("wxDynamicLibrary failed to GetSymbol '%s'"));
-#ifdef HAVE_DLERROR
-        const wxChar *err = dlerror();
-        if( err )
-        {
-            failed = TRUE;
-            wxLogError( msg, err );
-        }
-#else
-        failed = TRUE;
-        wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
-                      name.c_str());
-#endif
+        delete wxPluginLibrary::ms_classes;
+        wxPluginLibrary::ms_classes = NULL;
+        wxPluginManager::ClearManifest();

     }
     }

-    if( success )
-        *success = !failed;
-
-    return symbol;
-}
-

 
 

-// ---------------------------------------------------------------------------
-// wxPluginLibrary
-// ---------------------------------------------------------------------------
+private:
+    DECLARE_DYNAMIC_CLASS(wxPluginLibraryModule )
+};

 
 

+IMPLEMENT_DYNAMIC_CLASS(wxPluginLibraryModule, wxModule)

 
 

-wxDLImports  wxPluginLibrary::ms_classes(wxKEY_STRING);

 
 wxPluginLibrary::wxPluginLibrary(const wxString &libname, int flags)
         : m_linkcount(1)
 
 wxPluginLibrary::wxPluginLibrary(const wxString &libname, int flags)
         : m_linkcount(1)


@@ -288,11 +87,14 @@ wxPluginLibrary::wxPluginLibrary(const wxString &libname, int flags)
 
     if( m_handle != 0 )
     {
 
     if( m_handle != 0 )
     {

-        UpdateClassInfo();
+        UpdateClasses();

         RegisterModules();
     }
     else
         RegisterModules();
     }
     else

-        --m_linkcount;      // Flag us for deletion
+    {
+        // Flag us for deletion
+        --m_linkcount;
+    }

 }
 
 wxPluginLibrary::~wxPluginLibrary()
 }
 
 wxPluginLibrary::~wxPluginLibrary()


@@ -300,83 +102,59 @@ wxPluginLibrary::~wxPluginLibrary()
     if( m_handle != 0 )
     {
         UnregisterModules();
     if( m_handle != 0 )
     {
         UnregisterModules();

-        RestoreClassInfo();
+        RestoreClasses();

     }
 }
 
     }
 }
 

+wxPluginLibrary *wxPluginLibrary::RefLib()
+{
+    wxCHECK_MSG( m_linkcount > 0, NULL,
+                 _T("Library had been already deleted!") );
+
+    ++m_linkcount;
+    return this;
+}
+

 bool wxPluginLibrary::UnrefLib()
 {
 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 || --m_linkcount == 0 )

     {
         delete this;
     {
         delete this;

-        return TRUE;
+        return true;

     }
     }

-    return FALSE;
+
+    return false;

 }
 
 // ------------------------
 // Private methods
 // ------------------------
 
 }
 
 // ------------------------
 // Private methods
 // ------------------------
 

-void wxPluginLibrary::UpdateClassInfo()
+void wxPluginLibrary::UpdateClasses()

 {
 {

-    wxClassInfo     *info;
-    wxHashTable     *t = wxClassInfo::sm_classTable;
-
-        // FIXME: Below is simply a cut and paste specialisation of
-        //        wxClassInfo::InitializeClasses.  Once this stabilises,
-        //        the two should probably be merged.
-        //
-        //        Actually it's becoming questionable whether we should merge
-        //        this info with the main ClassInfo tables since we can nearly
-        //        handle this completely internally now and it does expose
-        //        certain (minimal % user_stupidy) risks.
-
-    for(info = m_after; info != m_before; info = info->m_next)
+    for (wxClassInfo *info = m_after; info != m_before; info = info->m_next)

     {
         if( info->m_className )
         {
     {
         if( info->m_className )
         {

-            if( t->Get(info->m_className) == 0 )
-                t->Put(info->m_className, (wxObject *)info);
-

             // Hash all the class names into a local table too so
             // we can quickly find the entry they correspond to.
             // 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;

         }
     }
         }
     }

-
-    for(info = m_after; info != m_before; info = info->m_next)
-    {
-        if( info->m_baseClassName1 )
-            info->m_baseInfo1 = (wxClassInfo *)t->Get(info->m_baseClassName1);
-        if( info->m_baseClassName2 )
-            info->m_baseInfo2 = (wxClassInfo *)t->Get(info->m_baseClassName2);
-    }

 }
 
 }
 

-void wxPluginLibrary::RestoreClassInfo()
+void wxPluginLibrary::RestoreClasses()

 {
 {

-    wxClassInfo *info;
+    // Check if there is a need to restore classes.
+    if (!ms_classes)
+        return;

 
 

-    for(info = m_after; info != m_before; info = info->m_next)
-    {
-        wxClassInfo::sm_classTable->Delete(info->m_className);
-        ms_classes.Delete(info->m_className);
-    }
-
-    if( wxClassInfo::sm_first == m_after )
-        wxClassInfo::sm_first = m_before;
-    else
+    for(wxClassInfo *info = m_after; info != m_before; info = info->m_next)

     {
     {

-        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"))
-
-        info->m_next = m_before;
+        ms_classes->erase(ms_classes->find(info->m_className));

     }
 }
 
     }
 }
 


@@ -393,7 +171,7 @@ void wxPluginLibrary::RegisterModules()
     wxASSERT_MSG( m_linkcount == 1,
                   _T("RegisterModules should only be called for the first load") );
 
     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)) )
         {
     {
         if( info->IsKindOf(CLASSINFO(wxModule)) )
         {


@@ -401,16 +179,18 @@ void wxPluginLibrary::RegisterModules()
 
             wxASSERT_MSG( m, _T("wxDynamicCast of wxModule failed") );
 
 
             wxASSERT_MSG( m, _T("wxDynamicCast of wxModule failed") );
 

-            m_wxmodules.Append(m);
+            m_wxmodules.push_back(m);

             wxModule::RegisterModule(m);
         }
     }
 
     // FIXME: Likewise this is (well was) very similar to InitializeModules()
 
             wxModule::RegisterModule(m);
         }
     }
 
     // FIXME: Likewise this is (well was) very similar to InitializeModules()
 

-    for(wxModuleList::Node *node = m_wxmodules.GetFirst(); node; node->GetNext())
+    for ( wxModuleList::iterator it = m_wxmodules.begin();
+          it != m_wxmodules.end();
+          ++it)

     {
     {

-        if( !node->GetData()->Init() )
+        if( !(*it)->Init() )

         {
             wxLogDebug(_T("wxModule::Init() failed for wxPluginLibrary"));
 
         {
             wxLogDebug(_T("wxModule::Init() failed for wxPluginLibrary"));
 


@@ -421,13 +201,14 @@ void wxPluginLibrary::RegisterModules()
             // let the dtor Exit the rest on shutdown, (which we'll initiate
             // shortly).
 
             // let the dtor Exit the rest on shutdown, (which we'll initiate
             // shortly).
 

-            wxModuleList::Node *oldNode = 0;
+            wxModuleList::iterator oldNode = m_wxmodules.end();

             do {
             do {

-                node = node->GetNext();
-                delete oldNode;
-                wxModule::UnregisterModule( node->GetData() );
-                oldNode = node;
-            } while( node );
+                ++it;
+                if( oldNode != m_wxmodules.end() )
+                    m_wxmodules.erase(oldNode);
+                wxModule::UnregisterModule( *it );
+                oldNode = it;
+            } while( it != m_wxmodules.end() );

 
             --m_linkcount;     // Flag us for deletion
             break;
 
             --m_linkcount;     // Flag us for deletion
             break;


@@ -437,86 +218,119 @@ void wxPluginLibrary::RegisterModules()
 
 void wxPluginLibrary::UnregisterModules()
 {
 
 void wxPluginLibrary::UnregisterModules()
 {

-    wxModuleList::Node  *node;
+    wxModuleList::iterator it;

 
 

-    for(node = m_wxmodules.GetFirst(); node; node->GetNext())
-        node->GetData()->Exit();
+    for ( it = m_wxmodules.begin(); it != m_wxmodules.end(); ++it )
+        (*it)->Exit();

 
 

-    for(node = m_wxmodules.GetFirst(); node; node->GetNext())
-        wxModule::UnregisterModule( node->GetData() );
+    for ( it = m_wxmodules.begin(); it != m_wxmodules.end(); ++it )
+        wxModule::UnregisterModule( *it );

 
 

-    m_wxmodules.DeleteContents(TRUE);
+    // NB: content of the list was deleted by UnregisterModule calls above:
+    m_wxmodules.clear();

 }
 
 
 // ---------------------------------------------------------------------------
 }
 
 
 // ---------------------------------------------------------------------------

-// wxPluginLibrary
+// wxPluginManager

 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------
 

-wxDLManifest   wxPluginManager::ms_manifest(wxKEY_STRING);
+wxDLManifest*   wxPluginManager::ms_manifest = NULL;

 
 // ------------------------
 // Static accessors
 // ------------------------
 
 
 // ------------------------
 // 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();
 
 {
     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 );
 
         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
         {
         }
         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;
 }
 
     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 WXWIN_COMPATIBILITY_2_2
-wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle)
-{
-    wxNode  *node;
-    ms_manifest.BeginFind();
+    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());

 
 

-    for(node = ms_manifest.Next(); node; node = ms_manifest.Next())
-        if( ((wxPluginLibrary*)node->GetData())->GetLibHandle() == handle )
-            return (wxPluginLibrary*)node->GetData();
+    if ( !entry->UnrefLib() )
+    {
+        // not really unloaded yet
+        return false;
+    }

 
 

-    return 0;
+    ms_manifest->erase(ms_manifest->find(realname));
+
+    return true;

 }
 }

-#endif

 
 // ------------------------
 // Class implementation
 
 // ------------------------
 // Class implementation


@@ -525,106 +339,249 @@ wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle)
 bool wxPluginManager::Load(const wxString &libname, int flags)
 {
     m_entry = wxPluginManager::LoadLibrary(libname, flags);
 bool wxPluginManager::Load(const wxString &libname, int flags)
 {
     m_entry = wxPluginManager::LoadLibrary(libname, flags);

+

     return IsLoaded();
 }
 
 void wxPluginManager::Unload()
 {
     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 )
+    for ( wxDLManifest::iterator i = ms_manifest->begin();
+          i != ms_manifest->end();
+          ++i )
+    {
+        if ( i->second == m_entry )
+        {
+            ms_manifest->erase(i);

             break;
             break;

+        }
+    }
+
+    m_entry->UnrefLib();
+
+    m_entry = NULL;
+}
+

 
 

-    if( m_entry && m_entry->UnrefLib() )
+
+#if WXWIN_COMPATIBILITY_2_2
+
+wxPluginLibrary *wxPluginManager::GetObjectFromHandle(wxDllType handle)
+{
+    for ( wxDLManifest::iterator i = ms_manifest->begin();
+          i != ms_manifest->end();
+          ++i )

     {
     {

-        delete node;
-        m_entry = 0;
+        wxPluginLibrary * const lib = i->second;
+
+        if ( lib->GetLibHandle() == handle )
+            return lib;

     }
     }

+
+    return NULL;
+}
+
+// ---------------------------------------------------------------------------
+// wxDllLoader   (all these methods are static)
+// ---------------------------------------------------------------------------
+
+
+wxDllType wxDllLoader::LoadLibrary(const wxString &name, bool *success)
+{
+    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)
+{
+    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);

 }
 
 
 }
 
 

-#ifdef __DARWIN__

 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------

-// For Darwin/Mac OS X
-//   supply the sun style dlopen functions in terms of Darwin NS*
+// Global variables

 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------
 

-extern "C" {
-#import <mach-o/dyld.h>
-};
+wxLibraries wxTheLibraries;

 
 

-enum dyldErrorSource
+// ============================================================================
+// 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)

 {
 {

-    OFImage,
-};
+    wxString fullname;
+    fullname << basename << wxDllLoader::GetDllExt();
+
+    return fullname;
+}
+
+// ---------------------------------------------------------------------------
+// wxLibrary (one instance per dynamic library)
+// ---------------------------------------------------------------------------
+
+wxLibrary::wxLibrary(wxDllType handle)
+{
+    typedef wxClassInfo *(*t_get_first)(void);
+    t_get_first get_first;

 
 

-static char dl_last_error[1024];
+    m_handle = handle;

 
 

-static void TranslateError(const char *path, enum dyldErrorSource type, int number)
+    // Some system may use a local heap for library.
+    get_first = (t_get_first)GetSymbol(_T("wxGetClassFirst"));
+    // It is a wxWidgets DLL.
+    if (get_first)
+        PrepareClasses(get_first());
+}
+
+wxLibrary::~wxLibrary()
+{
+    if ( m_handle )
+    {
+        wxDllLoader::UnloadLibrary(m_handle);
+    }
+}
+
+wxObject *wxLibrary::CreateObject(const wxString& name)

 {
 {

-    unsigned int index;
-    static char *OFIErrorStrings[] =
+    wxClassInfo *info = (wxClassInfo *)classTable.Get(name);
+
+    if (!info)
+        return NULL;
+
+    return info->CreateObject();
+}
+
+void wxLibrary::PrepareClasses(wxClassInfo *first)
+{
+    // Index all class infos by their class name
+    wxClassInfo *info = first;
+    while (info)

     {
     {

-       "%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)
+        if (info->m_className)
+            classTable.Put(info->m_className, (wxObject *)info);
+        info = info->m_next;
+    }
+
+#if !wxUSE_EXTENDED_RTTI
+    // Set base pointers for each wxClassInfo
+    info = first;
+    while (info)

     {
     {

-     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;
+        if (info->GetBaseClassName1())
+            info->m_baseInfo1 = (wxClassInfo *)classTable.Get(info->GetBaseClassName1());
+        if (info->GetBaseClassName2())
+            info->m_baseInfo2 = (wxClassInfo *)classTable.Get(info->GetBaseClassName2());
+        info = info->m_next;

     }
     }

+#endif

 }
 
 }
 

-#endif // __DARWIN__
+void *wxLibrary::GetSymbol(const wxString& symbname)
+{
+   return wxDllLoader::GetSymbol(m_handle, symbname);
+}

 
 
 // ---------------------------------------------------------------------------
 
 
 // ---------------------------------------------------------------------------

-// wxDllLoader   (all these methods are static)
+// wxLibraries (only one instance should normally exist)

 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------
 

-#if WXWIN_COMPATIBILITY_2_2
+wxLibraries::wxLibraries():m_loaded(wxKEY_STRING)
+{
+}

 
 

-wxDllType wxDllLoader::LoadLibrary(const wxString &name)
+wxLibraries::~wxLibraries()

 {
 {

-    wxPluginLibrary *p = wxPluginManager::LoadLibrary(name, wxDL_DEFAULT | wxDL_VERBATIM);
-    return p->GetLibHandle();
+    wxNode *node = m_loaded.First();
+
+    while (node) {
+        wxLibrary *lib = (wxLibrary *)node->Data();
+        delete lib;
+
+        node = node->Next();
+    }

 }
 
 }
 

-void wxDllLoader::UnloadLibrary(wxDllType handle)
+wxLibrary *wxLibraries::LoadLibrary(const wxString& name)

 {
 {

-    wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(handle);
-    p->UnrefLib();
+    wxLibrary   *lib;
+    wxClassInfo *old_sm_first;
+    wxNode      *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 libname = ConstructLibraryName(name);
+
+    bool success = false;
+    wxDllType handle = wxDllLoader::LoadLibrary(libname, &success);
+    if(success)
+    {
+       lib = new wxLibrary(handle);
+       wxClassInfo::sm_first = old_sm_first;
+
+       m_loaded.Append(name.GetData(), lib);
+    }
+    else
+       lib = NULL;
+    return lib;

 }
 
 }
 

-void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success)
+wxObject *wxLibraries::CreateObject(const wxString& path)

 {
 {

-    wxPluginLibrary *p = wxPluginManager::GetObjectFromHandle(dllHandle);
-    return p->GetSymbol(name, success);
+    wxNode *node = m_loaded.First();
+    wxObject *obj;
+
+    while (node) {
+        obj = ((wxLibrary *)node->Data())->CreateObject(path);
+        if (obj)
+            return obj;
+
+        node = node->Next();
+    }
+    return NULL;

 }
 
 #endif  // WXWIN_COMPATIBILITY_2_2
 
 }
 
 #endif  // WXWIN_COMPATIBILITY_2_2
 

+

 #endif  // wxUSE_DYNAMIC_LOADER
 
 #endif  // wxUSE_DYNAMIC_LOADER
 

-// vi:sts=4:sw=4:et