fix memory leak in wxScreenDC, fixes #13249

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

diff --git a/src/common/dynload.cpp b/src/common/dynload.cpp
index c1e35efc792da8958a1008ed2865f3bb6c404e9d..a76a1907334f1b9e80f6586ee1d6932271deea68 100644 (file)
--- a/src/common/dynload.cpp
+++ b/src/common/dynload.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:         dynload.cpp
+// Name:         src/common/dynload.cpp

 // Purpose:      Dynamic loading framework
 // Author:       Ron Lee, David Falkinder, Vadim Zeitlin and a cast of 1000's
 //               (derived in part from dynlib.cpp (c) 1998 Guilhem Lavaux)
 // Purpose:      Dynamic loading framework
 // Author:       Ron Lee, David Falkinder, Vadim Zeitlin and a cast of 1000's
 //               (derived in part from dynlib.cpp (c) 1998 Guilhem Lavaux)


@@ -7,13 +7,9 @@
 // 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__
-#pragma implementation "dynload.h"
-#endif
-

 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------


@@ -21,349 +17,143 @@
 #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"
-#endif
-
-#include "wx/dynload.h"
-
-// ----------------------------------------------------------------------------
-// conditional compilation
-// ----------------------------------------------------------------------------
-
-#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  // __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)
+    #include "wx/log.h"
+    #include "wx/intl.h"
+    #include "wx/hash.h"
+    #include "wx/utils.h"
+    #include "wx/module.h"

 #endif
 
 #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
+#include "wx/strconv.h"

 
 

+#include "wx/dynload.h"

 
 

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

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

-// wxDllLoader   (all these methods are static)
+// wxPluginLibrary

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

-#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
-#endif
+wxDLImports*  wxPluginLibrary::ms_classes = NULL;

 
 

-wxDllType wxDllLoader::GetProgramHandle()
+class wxPluginLibraryModule : public wxModule

 {
 {

-#if defined( HAVE_DLOPEN ) && !defined(__EMX__)
-   // obtain 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
-}
+public:
+    wxPluginLibraryModule() { }

 
 

-wxDllType wxDllLoader::LoadLibrary(const wxString &name)
-{
-    wxString    libname( name + wxDllLoader::GetDllExt() );
-    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 )
+    // TODO: create ms_classes on demand, why always preallocate it?
+    virtual bool OnInit()

     {
     {

-        p2cstr( myErrName );
-        wxLogSysError( _("Failed to load shared library '%s' Error '%s'"),
-                       libname.c_str(),
-                       (char*)myErrName );
-        handle = 0;
+        wxPluginLibrary::ms_classes = new wxDLImports;
+        wxPluginManager::CreateManifest();
+        return true;

     }
 
     }
 

-#elif defined(__WXPM__) || defined(__EMX__)
-    char        zError[256] = "";
-    wxDllOpen(zError, libname, handle);
-#else
-    handle = wxDllOpen(libname);
-#endif
-    if ( !handle )
+    virtual void OnExit()

     {
     {

-        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
+        wxDELETE(wxPluginLibrary::ms_classes);
+        wxPluginManager::ClearManifest();

     }
     }

-    return handle;
-}

 
 

-void wxDllLoader::UnloadLibrary(wxDllType handle)
-{
-   wxDllClose(handle);
-}
+private:
+    DECLARE_DYNAMIC_CLASS(wxPluginLibraryModule )
+};

 
 

-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;
-#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;
+IMPLEMENT_DYNAMIC_CLASS(wxPluginLibraryModule, wxModule)

 
 

-#elif defined(__WXPM__) || defined(__EMX__)
-    wxDllGetSymbol(dllHandle, symbol);
-#else

 
 

-    // mb_str() is necessary in Unicode build
-    symbol = wxDllGetSymbol(dllHandle, name.mb_str());
-#endif
+wxPluginLibrary::wxPluginLibrary(const wxString &libname, int flags)
+        : m_linkcount(1)
+        , m_objcount(0)
+{
+    m_before = wxClassInfo::GetFirst();
+    Load( libname, flags );
+    m_after = wxClassInfo::GetFirst();

 
 

-    if ( !symbol )
+    if( m_handle != 0 )

     {
     {

-        wxString msg(_("wxDllLoader 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
+        UpdateClasses();
+        RegisterModules();
+    }
+    else
+    {
+        // Flag us for deletion
+        --m_linkcount;

     }
     }

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

 }
 
 }
 

-
-// ---------------------------------------------------------------------------
-// wxDLManifestEntry
-// ---------------------------------------------------------------------------
-
-
-wxDLImports  wxDLManifestEntry::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)
-        , m_objcount(0)
+wxPluginLibrary::~wxPluginLibrary()

 {
     if( m_handle != 0 )
     {
 {
     if( m_handle != 0 )
     {

-        UpdateClassInfo();
-        RegisterModules();
+        UnregisterModules();
+        RestoreClasses();

     }
     }

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

 }
 
 }
 

-wxDLManifestEntry::~wxDLManifestEntry()
+wxPluginLibrary *wxPluginLibrary::RefLib()

 {
 {

-    UnregisterModules();
-    RestoreClassInfo();
+    wxCHECK_MSG( m_linkcount > 0, NULL,
+                 wxT("Library had been already deleted!") );

 
 

-    wxDllLoader::UnloadLibrary(m_handle);
+    ++m_linkcount;
+    return this;

 }
 
 }
 

-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 )
+    wxASSERT_MSG( m_objcount == 0,
+                  wxT("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 wxDLManifestEntry::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 (const wxClassInfo *info = m_after; info != m_before; info = info->GetNext())

     {
     {

-        if( info->m_className )
+        if( info->GetClassName() )

         {
         {

-            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->GetClassName()] = 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 wxDLManifestEntry::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)
+    for(const wxClassInfo *info = m_after; info != m_before; info = info->GetNext())

     {
     {

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

     }
 }
 
     }
 }
 

-void wxDLManifestEntry::RegisterModules()
+void wxPluginLibrary::RegisterModules()

 {
     // Plugin libraries might have wxModules, Register and initialise them if
     // they do.
 {
     // Plugin libraries might have wxModules, Register and initialise them if
     // they do.


@@ -374,28 +164,30 @@ void wxDLManifestEntry::RegisterModules()
     // though, as there is currently no way to Unregister it without it.
 
     wxASSERT_MSG( m_linkcount == 1,
     // though, as there is currently no way to Unregister it without it.
 
     wxASSERT_MSG( m_linkcount == 1,

-                  _T("RegisterModules should only be called for the first load") );
+                  wxT("RegisterModules should only be called for the first load") );

 
 

-    for(wxClassInfo *info = m_after; info != m_before; info = info->m_next)
+    for ( const wxClassInfo *info = m_after; info != m_before; info = info->GetNext())

     {
         if( info->IsKindOf(CLASSINFO(wxModule)) )
         {
             wxModule *m = wxDynamicCast(info->CreateObject(), wxModule);
 
     {
         if( info->IsKindOf(CLASSINFO(wxModule)) )
         {
             wxModule *m = wxDynamicCast(info->CreateObject(), wxModule);
 

-            wxASSERT_MSG( m, _T("wxDynamicCast of wxModule failed") );
+            wxASSERT_MSG( m, wxT("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 wxDynamicLibrary"));
+            wxLogDebug(wxT("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.
 
             // XXX: Watch this, a different hash implementation might break it,
             //      a good hash implementation would let us fix it though.


@@ -404,13 +196,14 @@ void wxDLManifestEntry::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;


@@ -418,192 +211,151 @@ void wxDLManifestEntry::RegisterModules()
     }
 }
 
     }
 }
 

-void wxDLManifestEntry::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();

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

-// wxDynamicLibrary
+// wxPluginManager

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

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

 
 // ------------------------
 // Static accessors
 // ------------------------
 
 
 // ------------------------
 // Static accessors
 // ------------------------
 

-wxDLManifestEntry *wxDynamicLibrary::Link(const wxString &libname)
+wxPluginLibrary *
+wxPluginManager::LoadLibrary(const wxString &libname, int flags)

 {
 {

-    wxDLManifestEntry *entry = (wxDLManifestEntry*) ms_manifest.Get(libname);
+    wxString realname(libname);
+
+    if( !(flags & wxDL_VERBATIM) )
+        realname += wxDynamicLibrary::GetDllExt();
+
+    wxPluginLibrary *entry;
+
+    if ( flags & wxDL_NOSHARE )
+    {
+        entry = NULL;
+    }
+    else
+    {
+        entry = FindByName(realname);
+    }

 
 

-    if( entry )
+    if ( entry )

     {
     {

+        wxLogTrace(wxT("dll"),
+                   wxT("LoadLibrary(%s): already loaded."), realname.c_str());
+

         entry->RefLib();
     }
     else
     {
         entry->RefLib();
     }
     else
     {

-        entry = new wxDLManifestEntry( libname );
+        entry = new wxPluginLibrary( libname, flags );

 
 

-        if( entry->IsLoaded() )
+        if ( entry->IsLoaded() )

         {
         {

-            ms_manifest.Put(libname, (wxObject*) entry);
+            (*ms_manifest)[realname] = entry;
+
+            wxLogTrace(wxT("dll"),
+                       wxT("LoadLibrary(%s): loaded ok."), realname.c_str());
+

         }
         else
         {
         }
         else
         {

-            wxCHECK_MSG( !entry->UnrefLib(), 0,
-                         _T("Currently linked library is, ..not loaded??") );
-            entry = 0;
+            wxLogTrace(wxT("dll"),
+                       wxT("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( wxT("Currently linked library is not loaded?") );
+            }
+
+            entry = NULL;

         }
     }
         }
     }

+

     return entry;
 }
 
     return entry;
 }
 

-bool wxDynamicLibrary::Unlink(const wxString &libname)
+bool wxPluginManager::UnloadLibrary(const wxString& libname)

 {
 {

-    wxDLManifestEntry *entry = (wxDLManifestEntry*) ms_manifest.Get(libname);
-
-    if( entry )
-        return entry->UnrefLib();
+    wxString realname = libname;

 
 

-    wxLogDebug(_T("Attempt to Unlink library '%s' (which is not linked)."), libname.c_str());
-    return 0;
-}
+    wxPluginLibrary *entry = FindByName(realname);

 
 

-// ------------------------
-// Class implementation
-// ------------------------
-
-wxDynamicLibrary::wxDynamicLibrary(const wxString &libname)
-{
-    m_entry = (wxDLManifestEntry*) ms_manifest.Get(libname);
-
-    if( m_entry != 0 )
+    if ( !entry )

     {
     {

-        m_entry->RefLib();
+        realname += wxDynamicLibrary::GetDllExt();
+
+        entry = FindByName(realname);

     }
     }

-    else
+
+    if ( !entry )

     {
     {

-        m_entry = new wxDLManifestEntry( libname );
-        ms_manifest.Put(libname, (wxObject*) m_entry);
+        wxLogDebug(wxT("Attempt to unload library '%s' which is not loaded."),
+                   libname.c_str());

 
 

-        wxASSERT_MSG( m_entry != 0, _T("Failed to create manifest entry") );
+        return false;

     }
     }

-}

 
 

-wxDynamicLibrary::~wxDynamicLibrary()
-{
-    wxNode  *node;
-    ms_manifest.BeginFind();
+    wxLogTrace(wxT("dll"), wxT("UnloadLibrary(%s)"), realname.c_str());

 
 

-    // It's either this or store the name of the lib just to do this.
+    if ( !entry->UnrefLib() )
+    {
+        // not really unloaded yet
+        return false;
+    }

 
 

-    for(node = ms_manifest.Next(); node; node = ms_manifest.Next())
-        if( (wxDLManifestEntry*)node->GetData() == m_entry )
-            break;
+    ms_manifest->erase(ms_manifest->find(realname));

 
 

-    if( m_entry && m_entry->UnrefLib() )
-        delete node;
+    return true;

 }
 
 }
 

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

 
 

-#ifdef __DARWIN__
-// ---------------------------------------------------------------------------
-// For Darwin/Mac OS X
-//   supply the sun style dlopen functions in terms of Darwin NS*
-// ---------------------------------------------------------------------------
-
-extern "C" {
-#import <mach-o/dyld.h>
-};
-
-enum dyldErrorSource
+bool wxPluginManager::Load(const wxString &libname, int flags)

 {
 {

-    OFImage,
-};
-
-static char dl_last_error[1024];
+    m_entry = wxPluginManager::LoadLibrary(libname, flags);

 
 

-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;
-    }
+    return IsLoaded();

 }
 
 }
 

-const char *dlerror()
-{
-    return dl_last_error;
-}
-void *dlopen(const char *path, int mode /* mode is ignored */)
+void wxPluginManager::Unload()

 {
 {

-    int                 dyld_result;
-    NSObjectFileImage   ofile;
-    NSModule            handle = 0;
+    wxCHECK_RET( m_entry, wxT("unloading an invalid wxPluginManager?") );

 
 

-    dyld_result = NSCreateObjectFileImageFromFile(path, &ofile);
-    if(dyld_result != NSObjectFileImageSuccess)
+    for ( wxDLManifest::iterator i = ms_manifest->begin();
+          i != ms_manifest->end();
+          ++i )

     {
     {

-       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);
+        if ( i->second == m_entry )
+        {
+            ms_manifest->erase(i);
+            break;
+        }

     }
 
     }
 

-    return handle;
-}
-
-int dlclose(void *handle) /* stub only */
-{
-    return 0;
-}
+    m_entry->UnrefLib();

 
 

-void *dlsym(void *handle, const char *symbol)
-{
-    return NSIsSymbolNameDefined(symbol)
-            ? NSAddressOfSymbol( NSLookupAndBindSymbol(symbol) )
-            : 0 ;
+    m_entry = NULL;

 }
 
 }
 

-#endif // __DARWIN__

 #endif  // wxUSE_DYNAMIC_LOADER
 #endif  // wxUSE_DYNAMIC_LOADER

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