Coupled some core functionality out, to allow its use outside the wxLibrary
framework. Fixed a Unix bug (I believe). Untested, sorry for that, will test ASAP. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2700 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Karsten Ballüder
parent
98394c294e
commit
a585ca5cb0
@ -13,7 +13,7 @@
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#define _WX_DYNLIB_H__
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#ifdef __GNUG__
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#pragma interface
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# pragma interface
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#endif
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#include <wx/setup.h>
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@ -26,36 +26,65 @@
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// this is normally done by configure, but I leave it here for now...
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#if defined(__UNIX__) && !(defined(HAVE_DLOPEN) || defined(HAVE_SHL_LOAD))
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#if defined(__LINUX__) || defined(__SOLARIS__) || defined(__SUNOS__) || defined(__FREEBSD__)
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#define HAVE_DLOPEN
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#elif defined(__HPUX__)
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#define HAVE_SHL_LOAD
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#endif // Unix flavour
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# if defined(__LINUX__) || defined(__SOLARIS__) || defined(__SUNOS__) || defined(__FREEBSD__)
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# define HAVE_DLOPEN
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# elif defined(__HPUX__)
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# define HAVE_SHL_LOAD
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# endif // Unix flavour
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#endif // !Unix or already have some HAVE_xxx defined
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#if defined(HAVE_DLOPEN)
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#include <dlfcn.h>
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# include <dlfcn.h>
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typedef void *wxDllType;
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#elif defined(HAVE_SHL_LOAD)
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#include <dl.h>
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# include <dl.h>
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typedef shl_t wxDllType;
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#elif defined(__WINDOWS__)
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#include <windows.h>
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# include <windows.h>
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typedef HMODULE wxDllType;
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#elif defined(__WXMAC__)
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typedef CFragConnectionID wxDllType;
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#else
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#error "wxLibrary can't be compiled on this platform, sorry."
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# error "wxLibrary can't be compiled on this platform, sorry."
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#endif // OS
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// defined in windows.h
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#ifdef LoadLibrary
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#undef LoadLibrary
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# undef LoadLibrary
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#endif
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// ----------------------------------------------------------------------------
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// wxDllLoader
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// ----------------------------------------------------------------------------
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/** wxDllLoader is a class providing an interface similar to unix's
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dlopen(). It is used by the wxLibrary framework and manages the
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actual loading of DLLs and the resolving of symbols in them.
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There are no instances of this class, it simply serves as a
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namespace for its static member functions.
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*/
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class wxDllLoader
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{
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public:
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/** This function loads a shared library into memory, with libname
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being the basename of the library, without the filename
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extension. No initialisation of the library will be done.
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@param libname Name of the shared object to load.
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@param success Must point to a bool variable which will be set to TRUE or FALSE.
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@return A handle to the loaded DLL. Use success parameter to test if it is valid.
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*/
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static wxDllType LoadDll(const wxString & libname, bool *success);
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/** This function resolves a symbol in a loaded DLL, such as a
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variable or function name.
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@param dllHandle Handle of the DLL, as returned by LoadDll().
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@param name Name of the symbol.
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@return A pointer to the symbol.
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*/
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static void * GetSymbol(wxDllType dllHandle, const wxString &name);
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private:
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/// forbid construction of objects
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wxDllLoader()
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};
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// ----------------------------------------------------------------------------
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// wxLibrary
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// ----------------------------------------------------------------------------
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@ -81,6 +110,8 @@ protected:
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wxDllType m_handle;
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};
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// ----------------------------------------------------------------------------
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// wxLibraries
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// ----------------------------------------------------------------------------
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@ -18,13 +18,13 @@
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// ----------------------------------------------------------------------------
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#ifdef __GNUG__
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#pragma implementation "dynlib.h"
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# pragma implementation "dynlib.h"
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#endif
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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# pragma hdrstop
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#endif //__BORLANDC__
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#if wxUSE_DYNLIB_CLASS
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@ -40,12 +40,12 @@
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// ----------------------------------------------------------------------------
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#if defined(HAVE_DLOPEN)
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#define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY)
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#define wxDllGetSymbol(handle, name) dlsym(handle, name.mb_str())
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#define wxDllClose dlclose
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# define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY)
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# define wxDllGetSymbol(handle, name) dlsym(handle, name.mb_str())
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# define wxDllClose dlclose
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#elif defined(HAVE_SHL_LOAD)
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#define wxDllOpen(lib) shl_load(lib.fn_str(), BIND_DEFERRED, 0)
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#define wxDllClose shl_unload
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# define wxDllOpen(lib) shl_load(lib.fn_str(), BIND_DEFERRED, 0)
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# define wxDllClose shl_unload
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static inline void *wxDllGetSymbol(shl_t handle, const wxString& name)
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{
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@ -56,18 +56,18 @@
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return (void *)0;
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}
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#elif defined(__WINDOWS__)
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#include <windows.h>
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# include <windows.h>
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// using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary
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#ifdef __WIN32__
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#define wxDllOpen(lib) ::LoadLibraryEx(lib, 0, 0)
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#else // Win16
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#define wxDllOpen(lib) ::LoadLibrary(lib)
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#endif // Win32/16
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#define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name)
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#define wxDllClose ::FreeLibrary
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# ifdef __WIN32__
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# define wxDllOpen(lib) ::LoadLibraryEx(lib, 0, 0)
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# else // Win16
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# define wxDllOpen(lib) ::LoadLibrary(lib)
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# endif // Win32/16
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# define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name)
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# define wxDllClose ::FreeLibrary
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#else
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#error "Don't know how to load shared libraries on this platform."
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# error "Don't know how to load shared libraries on this platform."
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#endif // OS
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// ---------------------------------------------------------------------------
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@ -87,11 +87,11 @@ static wxString ConstructLibraryName(const wxString& basename)
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wxString fullname(basename);
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#if defined(__UNIX__)
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#if defined(__HPUX__)
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# if defined(__HPUX__)
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fullname << ".sl";
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#else //__HPUX__
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# else //__HPUX__
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fullname << ".so";
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#endif //__HPUX__
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# endif //__HPUX__
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#elif defined(__WINDOWS__)
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fullname << ".dll";
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#endif
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@ -103,6 +103,7 @@ static wxString ConstructLibraryName(const wxString& basename)
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// implementation
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// ============================================================================
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// ---------------------------------------------------------------------------
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// wxLibrary (one instance per dynamic library)
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// ---------------------------------------------------------------------------
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@ -164,30 +165,74 @@ void wxLibrary::PrepareClasses(wxClassInfo *first)
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void *wxLibrary::GetSymbol(const wxString& symbname)
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{
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void *symbol = NULL; // return value
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return wxDllLoader::GetSymbol(m_handle, symbname);
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}
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// ---------------------------------------------------------------------------
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// wxDllLoader
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// ---------------------------------------------------------------------------
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/* static */
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wxDllType
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wxDllLoader::LoadLibrary(const wxString & libname, bool *success)
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{
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wxASSERT(success);
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wxDllType handle;
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#if defined(__WXMAC__)
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FSSpec myFSSpec ;
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Ptr myMainAddr ;
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Str255 myErrName ;
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wxMacPathToFSSpec( lib_name , &myFSSpec ) ;
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if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr ,
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myErrName ) != noErr )
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{
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p2cstr( myErrName ) ;
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wxASSERT_MSG( 1 , (char*)myErrName ) ;
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return NULL ;
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}
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#else // !Mac
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handle = wxDllOpen(lib_name);
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#endif // OS
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if ( !handle )
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{
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wxLogSysError(_("Failed to load shared library '%s'"),
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lib_name.c_str());
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*success = FALSE;
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return NULL;
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}
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*success = TRUE;
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return handle;
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}
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/* static */
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void *
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wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name)
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{
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void *symbol = NULL; // return value
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#if defined( __WXMAC__ )
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Ptr symAddress ;
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CFragSymbolClass symClass ;
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Str255 symName ;
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strcpy( (char*) symName , symbname ) ;
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c2pstr( (char*) symName ) ;
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if ( FindSymbol( m_handle , symName , &symAddress , &symClass ) == noErr )
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{
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symbol = (void *)symAddress ;
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}
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Ptr symAddress ;
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CFragSymbolClass symClass ;
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Str255 symName ;
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strcpy( (char*) symName , name ) ;
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c2pstr( (char*) symName ) ;
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if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr )
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symbol = (void *)symAddress ;
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#else
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symbol = wxDllGetSymbol(m_handle, symbname);
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symbol = wxDllGetSymbol(dllHandle, name);
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#endif
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if ( !symbol )
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{
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wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
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symbname.c_str());
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wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
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symbname.c_str());
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}
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return symbol;
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}
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@ -226,6 +271,10 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
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wxString lib_name = ConstructLibraryName(name);
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/*
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Unix automatically builds that library name, at least for dlopen()
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*/
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#if 0
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#if defined(__UNIX__)
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// found the first file in LD_LIBRARY_PATH with this name
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wxString libPath("/lib:/usr/lib"); // system path first
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@ -249,40 +298,18 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
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//else: not found in the path, leave the name as is (secutiry risk?)
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#endif // __UNIX__
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#endif
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wxDllType handle;
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#if defined(__WXMAC__)
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FSSpec myFSSpec ;
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Ptr myMainAddr ;
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Str255 myErrName ;
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wxMacPathToFSSpec( lib_name , &myFSSpec ) ;
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if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr ,
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myErrName ) != noErr )
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bool success;
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handle = wxDllLoader::LoadDll(lib_name, &success);
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if(success)
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{
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p2cstr( myErrName ) ;
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wxASSERT_MSG( 1 , (char*)myErrName ) ;
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return NULL ;
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lib = new wxLibrary(handle);
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wxClassInfo::sm_first = old_sm_first;
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m_loaded.Append(name.GetData(), lib);
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}
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#else // !Mac
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handle = wxDllOpen(lib_name);
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#endif // OS
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if ( !handle )
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{
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wxLogSysError(_("Failed to load shared library '%s'"),
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lib_name.c_str());
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return NULL;
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}
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lib = new wxLibrary(handle);
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wxClassInfo::sm_first = old_sm_first;
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m_loaded.Append(name.GetData(), lib);
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else
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lib = NULL;
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return lib;
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}
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