+/////////////////////////////////////////////////////////////////////////////
+// Name: dynlib.cpp
+// Purpose: Dynamic library management
+// Author: Guilhem Lavaux
+// Modified by:
+// Created: 20/07/98
+// RCS-ID: $Id$
+// Copyright: (c) Guilhem Lavaux
+// Licence: wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
#ifndef _WX_DYNLIB_H__
#define _WX_DYNLIB_H__
#ifdef __GNUG__
-#pragma interface
+ #pragma interface
#endif
#include <wx/string.h>
#include <wx/list.h>
-#include <wx/dynarray.h>
#include <wx/hash.h>
+#if defined(HAVE_DLOPEN)
+ #include <dlfcn.h>
+
+ typedef void *wxDllType;
+#elif defined(HAVE_SHLLOAD)
+ #include <dl.h>
+
+ typedef void *wxDllType;
+#elif defined(__WINDOWS__)
+ #include <windows.h>
+
+ typedef HMODULE wxDllType;
+#elif defined(__WXMAC__)
+ typedef CFragConnectionID wxDllType;
+#else
+ #error "wxLibrary can't be compiled on this platform, sorry."
+#endif // OS
+
+// defined in windows.h
#ifdef LoadLibrary
-#undef LoadLibrary
+ #undef LoadLibrary
#endif
-// ---------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
// wxLibrary
+// ----------------------------------------------------------------------------
-class wxLibrary: public wxObject {
- protected:
- void *m_handle;
- bool m_destroy;
- public:
- wxHashTable classTable;
+class wxLibrary : public wxObject
+{
+public:
+ wxHashTable classTable;
- public:
- wxLibrary(void *handle);
- ~wxLibrary(void);
+public:
+ wxLibrary(void *handle);
+ ~wxLibrary();
- // Get a symbol from the dynamic library
- void *GetSymbol(const wxString& symbname);
+ // Get a symbol from the dynamic library
+ void *GetSymbol(const wxString& symbname);
- // Create the object whose classname is "name"
- wxObject *CreateObject(const wxString& name);
+ // Create the object whose classname is "name"
+ wxObject *CreateObject(const wxString& name);
- // Merge the symbols with the main symbols: WARNING! the library will not
- // be unloaded.
- void MergeWithSystem();
+protected:
+ void PrepareClasses(wxClassInfo *first);
- protected:
- void PrepareClasses(wxClassInfo *first);
+ wxDllType m_handle;
};
-// ---------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
// wxLibraries
+// ----------------------------------------------------------------------------
+
+class wxLibraries
+{
+public:
+ wxLibraries();
+ ~wxLibraries();
-class wxLibraries {
- protected:
- wxList m_loaded;
- public:
- wxLibraries(void);
- ~wxLibraries(void);
+ // caller is responsible for deleting the returned pointer if !NULL
+ wxLibrary *LoadLibrary(const wxString& basename);
- wxLibrary *LoadLibrary(const wxString& name);
- wxObject *CreateObject(const wxString& name);
+ wxObject *CreateObject(const wxString& name);
+
+protected:
+ wxList m_loaded;
};
-// ---------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
// Global variables
+// ----------------------------------------------------------------------------
extern wxLibraries wxTheLibraries;
-// ---------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
// Interesting defines
+// ----------------------------------------------------------------------------
#define WXDLL_ENTRY_FUNCTION() \
extern "C" wxClassInfo *wxGetClassFirst(); \
return wxClassInfo::GetFirst(); \
}
-#endif
+#endif // _WX_DYNLIB_H__
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
#ifdef __GNUG__
-#pragma implementation "dynlib.h"
+ #pragma implementation "dynlib.h"
#endif
#include "wx/wxprec.h"
#pragma hdrstop
#endif //__BORLANDC__
-#ifndef WX_PRECOMP
-#endif //WX_PRECOMP
-
-#include <wx/dynlib.h>
-#include <wx/filefn.h>
-#include <wx/list.h>
-#include <wx/string.h>
+// TODO should be done by configure
+#if defined(__UNIX__) && !(defined(HAVE_DLOPEN) || defined(HAVE_SHLLOAD))
+ #if defined(__LINUX__) || defined(__SOLARIS__) || defined(__SUNOS__)
+ #ifndef HAVE_DLOPEN
+ #define HAVE_DLOPEN
+ #endif
+ #elif defined(__HPUX__)
+ #ifndef HAVE_SHLLOAD
+ #define HAVE_SHLLOAD
+ #endif
+ #endif // Unix flavour
+#endif // !Unix or already have some HAVE_xxx defined
+
+#include "wx/dynlib.h"
+#include "wx/filefn.h"
+#include "wx/intl.h"
+#include "wx/log.h"
+
+// ----------------------------------------------------------------------------
+// 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
+
+ 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;
+ }
+#elif defined(__WINDOWS__)
+ #define wxDllOpen(lib) ::LoadLibrary(lib)
+ #define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name)
+ #define wxDllClose ::FreeLibrary
+#else
+ #error "Don't know how to load shared libraries on this platform."
+#endif // OS
// ---------------------------------------------------------------------------
-// System dependent include
+// Global variables
// ---------------------------------------------------------------------------
-#if defined(__UNIX__)
-#include <dlfcn.h>
-#endif
+wxLibraries wxTheLibraries;
-#ifdef __WINDOWS__
-#include <windows.h>
-#endif
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
-#ifdef LoadLibrary
-#undef LoadLibrary
+// 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
-// ---------------------------------------------------------------------------
-// Global variables
-// ---------------------------------------------------------------------------
+ return fullname;
+}
-wxLibraries wxTheLibraries;
+// ============================================================================
+// implementation
+// ============================================================================
// ---------------------------------------------------------------------------
-// wxLibrary (one instance per dynamic library
+// wxLibrary (one instance per dynamic library)
// ---------------------------------------------------------------------------
-wxLibrary::wxLibrary(void *handle)
+wxLibrary::wxLibrary(wxDllType handle)
{
- typedef wxClassInfo *(*t_get_first)(void);
- t_get_first get_first;
+ typedef wxClassInfo *(*t_get_first)(void);
+ t_get_first get_first;
- m_handle = handle;
- m_destroy = TRUE;
+ m_handle = handle;
- // Some system may use a local heap for library.
- get_first = (t_get_first)GetSymbol("wxGetClassFirst");
- // It is a wxWindows DLL.
- if (get_first)
- PrepareClasses(get_first());
+ // Some system may use a local heap for library.
+ get_first = (t_get_first)GetSymbol("wxGetClassFirst");
+ // It is a wxWindows DLL.
+ if (get_first)
+ PrepareClasses(get_first());
}
wxLibrary::~wxLibrary()
{
- if (m_handle && m_destroy) {
-#if defined(__UNIX__)
- dlclose(m_handle);
-#endif
-#ifdef __WINDOWS__
- FreeLibrary((HMODULE)m_handle);
-#endif
- }
+ if ( m_handle )
+ {
+ wxDllClose(m_handle);
+ }
}
wxObject *wxLibrary::CreateObject(const wxString& name)
{
- wxClassInfo *info = (wxClassInfo *)classTable.Get(name);
+ wxClassInfo *info = (wxClassInfo *)classTable.Get(name);
- if (!info)
- return NULL;
+ if (!info)
+ return NULL;
- return info->CreateObject();
+ return info->CreateObject();
}
void wxLibrary::PrepareClasses(wxClassInfo *first)
{
- // Index all class infos by their class name
- wxClassInfo *info = first;
- while (info)
- {
- if (info->m_className)
- classTable.Put(info->m_className, (wxObject *)info);
- info = info->GetNext();
- }
-
- // Set base pointers for each wxClassInfo
- info = first;
- while (info)
- {
- 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;
- }
+ // Index all class infos by their class name
+ wxClassInfo *info = first;
+ while (info)
+ {
+ if (info->m_className)
+ classTable.Put(info->m_className, (wxObject *)info);
+ info = info->GetNext();
+ }
+
+ // Set base pointers for each wxClassInfo
+ info = first;
+ while (info)
+ {
+ 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;
+ }
}
void *wxLibrary::GetSymbol(const wxString& symbname)
{
-#if defined(__UNIX__)
- return dlsym(m_handle, WXSTRINGCAST symbname);
-#elif defined( __WINDOWS__ )
- return GetProcAddress((HINSTANCE) m_handle, WXSTRINGCAST symbname);
-#elif defined( __WXMAC__ )
- Ptr symAddress ;
- CFragSymbolClass symClass ;
- Str255 symName ;
-
- strcpy( (char*) symName , symbname ) ;
- c2pstr( (char*) symName ) ;
-
- if ( FindSymbol( (CFragConnectionID) m_handle , symName , &symAddress , &symClass ) == noErr )
- {
- return symAddress ;
- }
+ void *symbol = NULL; // return value
+
+#if defined( __WXMAC__ )
+ Ptr symAddress ;
+ CFragSymbolClass symClass ;
+ Str255 symName ;
+
+ strcpy( (char*) symName , symbname ) ;
+ c2pstr( (char*) symName ) ;
+
+ if ( FindSymbol( m_handle , symName , &symAddress , &symClass ) == noErr )
+ {
+ symbol = (void *)symAddress ;
+ }
+#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);
#endif
- return NULL;
+
+ if ( !symbol )
+ {
+ wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
+ symbname.c_str());
+ }
+
+ return symbol;
}
// ---------------------------------------------------------------------------
wxLibraries::~wxLibraries()
{
- wxNode *node = m_loaded.First();
+ wxNode *node = m_loaded.First();
- while (node) {
- wxLibrary *lib = (wxLibrary *)node->Data();
- delete lib;
+ while (node) {
+ wxLibrary *lib = (wxLibrary *)node->Data();
+ delete lib;
- node = node->Next();
- }
+ node = node->Next();
+ }
}
wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
{
- wxString lib_name = name;
- wxNode *node;
- wxLibrary *lib;
- wxClassInfo *old_sm_first;
+ wxNode *node;
+ wxLibrary *lib;
+ wxClassInfo *old_sm_first;
- if ( (node = m_loaded.Find(name.GetData())) )
- return ((wxLibrary *)node->Data());
+ if ( (node = m_loaded.Find(name.GetData())) )
+ return ((wxLibrary *)node->Data());
- // If DLL shares data, this is necessary.
- old_sm_first = wxClassInfo::sm_first;
- wxClassInfo::sm_first = NULL;
+ // 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__)
- lib_name.Prepend("./lib");
- lib_name += ".so";
+ // TODO use LD_LIBRARY_PATH!
+ lib_name.Prepend("/lib");
+#endif // __UNIX__
- printf("lib_name = %s\n", WXSTRINGCAST lib_name);
+ wxDllType handle ;
- void *handle = dlopen(WXSTRINGCAST lib_name, RTLD_LAZY);
+#if defined(__WXMAC__)
+ FSSpec myFSSpec ;
+ Ptr myMainAddr ;
+ Str255 myErrName ;
- printf("error = %s\n", dlerror());
+ 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
- if (!handle)
- return NULL;
-#elif defined(__WINDOWS__)
- lib_name += ".dll";
+ if ( !handle )
+ {
+ wxLogSysError(_("Failed to load shared library '%s'"),
+ lib_name.c_str());
-#ifdef UNICODE
- HMODULE handle = LoadLibraryW(lib_name);
-#else
-#ifdef __WIN16__
- HMODULE handle = ::LoadLibrary(lib_name);
-#else
- HMODULE handle = LoadLibraryA(lib_name);
-#endif
-#endif
- if (!handle)
- return NULL;
-#elif defined(__WXMAC__)
- FSSpec myFSSpec ;
- CFragConnectionID handle ;
- 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
- return NULL;
-#endif
+ return NULL;
+ }
- lib = new wxLibrary((void *)handle);
+ lib = new wxLibrary(handle);
- wxClassInfo::sm_first = old_sm_first;
+ wxClassInfo::sm_first = old_sm_first;
- m_loaded.Append(name.GetData(), lib);
- return lib;
+ m_loaded.Append(name.GetData(), lib);
+
+ return lib;
}
wxObject *wxLibraries::CreateObject(const wxString& path)
{
- wxNode *node = m_loaded.First();
- wxObject *obj;
+ wxNode *node = m_loaded.First();
+ wxObject *obj;
- while (node) {
- obj = ((wxLibrary *)node->Data())->CreateObject(path);
- if (obj)
- return obj;
+ while (node) {
+ obj = ((wxLibrary *)node->Data())->CreateObject(path);
+ if (obj)
+ return obj;
- node = node->Next();
- }
- return NULL;
+ node = node->Next();
+ }
+ return NULL;
}
projects / wxWidgets.git / commitdiff
