630 lines
22 KiB
C++
630 lines
22 KiB
C++
/*************************************************************************
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*
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* $RCSfile: except.cxx,v $
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*
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* $Revision: 1.12 $
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*
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* last change: $Author: hr $ $Date: 2004-02-03 12:46:50 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#pragma warning( disable : 4237 )
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#include <hash_map>
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#include <sal/config.h>
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#include <malloc.h>
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#include <new.h>
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#include <typeinfo.h>
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#include <signal.h>
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#include "rtl/alloc.h"
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#include "rtl/strbuf.hxx"
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#include "rtl/ustrbuf.hxx"
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#include "com/sun/star/uno/Any.hxx"
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#include "msci.hxx"
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#pragma pack(push, 8)
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using namespace ::com::sun::star::uno;
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using namespace ::std;
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using namespace ::osl;
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using namespace ::rtl;
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namespace CPPU_CURRENT_NAMESPACE
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{
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//==================================================================================================
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static inline OUString toUNOname( OUString const & rRTTIname ) throw ()
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{
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OUStringBuffer aRet( 64 );
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OUString aStr( rRTTIname.copy( 4, rRTTIname.getLength()-4-2 ) ); // filter .?AUzzz@yyy@xxx@@
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sal_Int32 nPos = aStr.getLength();
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while (nPos > 0)
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{
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sal_Int32 n = aStr.lastIndexOf( '@', nPos );
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aRet.append( aStr.copy( n +1, nPos -n -1 ) );
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if (n >= 0)
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{
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aRet.append( (sal_Unicode)'.' );
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}
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nPos = n;
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}
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return aRet.makeStringAndClear();
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}
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//==================================================================================================
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static inline OUString toRTTIname( OUString const & rUNOname ) throw ()
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{
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OUStringBuffer aRet( 64 );
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aRet.appendAscii( RTL_CONSTASCII_STRINGPARAM(".?AV") ); // class ".?AV"; struct ".?AU"
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sal_Int32 nPos = rUNOname.getLength();
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while (nPos > 0)
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{
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sal_Int32 n = rUNOname.lastIndexOf( '.', nPos );
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aRet.append( rUNOname.copy( n +1, nPos -n -1 ) );
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aRet.append( (sal_Unicode)'@' );
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nPos = n;
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}
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aRet.append( (sal_Unicode)'@' );
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return aRet.makeStringAndClear();
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}
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//##################################################################################################
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//#### RTTI simulation #############################################################################
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//##################################################################################################
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typedef hash_map< OUString, void *, OUStringHash, equal_to< OUString > > t_string2PtrMap;
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//==================================================================================================
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class RTTInfos
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{
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Mutex _aMutex;
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t_string2PtrMap _allRTTI;
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static OUString toRawName( OUString const & rUNOname ) throw ();
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public:
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type_info * getRTTI( OUString const & rUNOname ) throw ();
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RTTInfos();
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~RTTInfos();
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};
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//==================================================================================================
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class __type_info
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{
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friend type_info * RTTInfos::getRTTI( OUString const & ) throw ();
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friend int msci_filterCppException(
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LPEXCEPTION_POINTERS, uno_Any *, uno_Mapping * );
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public:
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virtual ~__type_info() throw ();
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inline __type_info( void * m_data, const char * m_d_name ) throw ()
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: _m_data( m_data )
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{ ::strcpy( _m_d_name, m_d_name ); } // #100211# - checked
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private:
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void * _m_data;
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char _m_d_name[1];
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};
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//__________________________________________________________________________________________________
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__type_info::~__type_info() throw ()
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{
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}
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//__________________________________________________________________________________________________
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type_info * RTTInfos::getRTTI( OUString const & rUNOname ) throw ()
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{
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// a must be
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OSL_ENSURE( sizeof(__type_info) == sizeof(type_info), "### type info structure size differ!" );
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MutexGuard aGuard( _aMutex );
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t_string2PtrMap::const_iterator const iFind( _allRTTI.find( rUNOname ) );
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// check if type is already available
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if (iFind == _allRTTI.end())
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{
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// insert new type_info
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OString aRawName( OUStringToOString( toRTTIname( rUNOname ), RTL_TEXTENCODING_ASCII_US ) );
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__type_info * pRTTI = new( ::rtl_allocateMemory( sizeof(__type_info) + aRawName.getLength() ) )
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__type_info( NULL, aRawName.getStr() );
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// put into map
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pair< t_string2PtrMap::iterator, bool > insertion(
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_allRTTI.insert( t_string2PtrMap::value_type( rUNOname, pRTTI ) ) );
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OSL_ENSURE( insertion.second, "### rtti insertion failed?!" );
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return (type_info *)pRTTI;
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}
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else
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{
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return (type_info *)iFind->second;
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}
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}
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//__________________________________________________________________________________________________
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RTTInfos::RTTInfos() throw ()
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{
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}
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//__________________________________________________________________________________________________
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RTTInfos::~RTTInfos() throw ()
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{
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#if OSL_DEBUG_LEVEL > 1
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OSL_TRACE( "> freeing generated RTTI infos... <\n" );
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#endif
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MutexGuard aGuard( _aMutex );
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for ( t_string2PtrMap::const_iterator iPos( _allRTTI.begin() );
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iPos != _allRTTI.end(); ++iPos )
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{
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__type_info * pType = (__type_info *)iPos->second;
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pType->~__type_info(); // obsolete, but good style...
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::rtl_freeMemory( pType );
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}
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}
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//##################################################################################################
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//#### Exception raising ###########################################################################
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//##################################################################################################
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//==================================================================================================
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struct ObjectFunction
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{
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char somecode[12];
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typelib_TypeDescription * _pTypeDescr; // type of object
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ObjectFunction( typelib_TypeDescription * pTypeDescr, void * fpFunc ) throw ();
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~ObjectFunction() throw ();
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};
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//__________________________________________________________________________________________________
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ObjectFunction::ObjectFunction( typelib_TypeDescription * pTypeDescr, void * fpFunc ) throw ()
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: _pTypeDescr( pTypeDescr )
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{
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::typelib_typedescription_acquire( _pTypeDescr );
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unsigned char * pCode = (unsigned char *)somecode;
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// a must be!
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OSL_ENSURE( (void *)this == (void *)pCode, "### unexpected!" );
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// push ObjectFunction this
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*pCode++ = 0x68;
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*(void **)pCode = this;
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pCode += sizeof(void *);
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// jmp rel32 fpFunc
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*pCode++ = 0xe9;
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*(sal_Int32 *)pCode = ((unsigned char *)fpFunc) - pCode - sizeof(sal_Int32);
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}
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//__________________________________________________________________________________________________
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ObjectFunction::~ObjectFunction() throw ()
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{
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::typelib_typedescription_release( _pTypeDescr );
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}
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//==================================================================================================
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static void * __cdecl __copyConstruct( void * pExcThis, void * pSource, ObjectFunction * pThis )
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throw ()
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{
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::uno_copyData( pExcThis, pSource, pThis->_pTypeDescr, cpp_acquire );
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return pExcThis;
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}
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//==================================================================================================
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static void * __cdecl __destruct( void * pExcThis, ObjectFunction * pThis )
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throw ()
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{
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::uno_destructData( pExcThis, pThis->_pTypeDescr, cpp_release );
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return pExcThis;
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}
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// these are non virtual object methods; there is no this ptr on stack => ecx supplies _this_ ptr
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//==================================================================================================
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static __declspec(naked) void copyConstruct() throw ()
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{
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__asm
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{
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// ObjectFunction this already on stack
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push [esp+8] // source exc object this
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push ecx // exc object
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call __copyConstruct
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add esp, 12 // + ObjectFunction this
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ret 4
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}
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}
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//==================================================================================================
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static __declspec(naked) void destruct() throw ()
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{
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__asm
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{
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// ObjectFunction this already on stack
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push ecx // exc object
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call __destruct
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add esp, 8 // + ObjectFunction this
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ret
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}
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}
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//==================================================================================================
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struct ExceptionType
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{
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sal_Int32 _n0;
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type_info * _pTypeInfo;
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sal_Int32 _n1, _n2, _n3, _n4;
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ObjectFunction * _pCopyCtor;
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sal_Int32 _n5;
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inline ExceptionType( typelib_TypeDescription * pTypeDescr ) throw ()
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: _n0( 0 )
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, _n1( 0 )
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, _n2( -1 )
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, _n3( 0 )
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, _n4( pTypeDescr->nSize )
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, _pCopyCtor( new ObjectFunction( pTypeDescr, copyConstruct ) )
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, _n5( 0 )
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{ _pTypeInfo = msci_getRTTI( pTypeDescr->pTypeName ); }
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inline ~ExceptionType() throw ()
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{ delete _pCopyCtor; }
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};
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//==================================================================================================
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struct RaiseInfo
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{
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sal_Int32 _n0;
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ObjectFunction * _pDtor;
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sal_Int32 _n2;
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void * _types;
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sal_Int32 _n3, _n4;
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RaiseInfo( typelib_TypeDescription * pTypeDescr ) throw ();
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~RaiseInfo() throw ();
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};
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//__________________________________________________________________________________________________
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RaiseInfo::RaiseInfo( typelib_TypeDescription * pTypeDescr ) throw ()
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: _n0( 0 )
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, _pDtor( new ObjectFunction( pTypeDescr, destruct ) )
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, _n2( 0 )
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, _n3( 0 )
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, _n4( 0 )
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{
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// a must be
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OSL_ENSURE( sizeof(sal_Int32) == sizeof(ExceptionType *), "### pointer size differs from sal_Int32!" );
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typelib_CompoundTypeDescription * pCompTypeDescr;
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// info count
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sal_Int32 nLen = 0;
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for ( pCompTypeDescr = (typelib_CompoundTypeDescription*)pTypeDescr;
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pCompTypeDescr; pCompTypeDescr = pCompTypeDescr->pBaseTypeDescription )
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{
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++nLen;
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}
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// info count accompanied by type info ptrs: type, base type, base base type, ...
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_types = ::rtl_allocateMemory( sizeof(sal_Int32) + (sizeof(ExceptionType *) * nLen) );
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*(sal_Int32 *)_types = nLen;
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ExceptionType ** ppTypes = (ExceptionType **)((sal_Int32 *)_types + 1);
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sal_Int32 nPos = 0;
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for ( pCompTypeDescr = (typelib_CompoundTypeDescription*)pTypeDescr;
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pCompTypeDescr; pCompTypeDescr = pCompTypeDescr->pBaseTypeDescription )
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{
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ppTypes[nPos++] = new ExceptionType( (typelib_TypeDescription *)pCompTypeDescr );
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}
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}
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//__________________________________________________________________________________________________
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RaiseInfo::~RaiseInfo() throw ()
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{
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ExceptionType ** ppTypes = (ExceptionType **)((sal_Int32 *)_types + 1);
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for ( sal_Int32 nTypes = *(sal_Int32 *)_types; nTypes--; )
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{
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delete ppTypes[nTypes];
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}
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::rtl_freeMemory( _types );
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delete _pDtor;
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}
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//==================================================================================================
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class ExceptionInfos
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{
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Mutex _aMutex;
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t_string2PtrMap _allRaiseInfos;
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public:
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static void * getRaiseInfo( typelib_TypeDescription * pTypeDescr ) throw ();
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ExceptionInfos() throw ();
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~ExceptionInfos() throw ();
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};
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//__________________________________________________________________________________________________
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ExceptionInfos::ExceptionInfos() throw ()
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{
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}
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//__________________________________________________________________________________________________
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ExceptionInfos::~ExceptionInfos() throw ()
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{
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#if OSL_DEBUG_LEVEL > 1
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OSL_TRACE( "> freeing exception infos... <\n" );
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#endif
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MutexGuard aGuard( _aMutex );
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for ( t_string2PtrMap::const_iterator iPos( _allRaiseInfos.begin() );
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iPos != _allRaiseInfos.end(); ++iPos )
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{
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delete (RaiseInfo *)iPos->second;
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}
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}
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//__________________________________________________________________________________________________
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void * ExceptionInfos::getRaiseInfo( typelib_TypeDescription * pTypeDescr ) throw ()
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{
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static ExceptionInfos * s_pInfos = 0;
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if (! s_pInfos)
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{
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MutexGuard aGuard( Mutex::getGlobalMutex() );
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if (! s_pInfos)
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{
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#ifdef LEAK_STATIC_DATA
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s_pInfos = new ExceptionInfos();
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#else
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static ExceptionInfos s_allExceptionInfos;
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s_pInfos = &s_allExceptionInfos;
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#endif
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}
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}
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OSL_ASSERT( pTypeDescr &&
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(pTypeDescr->eTypeClass == typelib_TypeClass_STRUCT ||
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pTypeDescr->eTypeClass == typelib_TypeClass_EXCEPTION) );
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void * pRaiseInfo;
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OUString const & rTypeName = *reinterpret_cast< OUString * >( &pTypeDescr->pTypeName );
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MutexGuard aGuard( s_pInfos->_aMutex );
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t_string2PtrMap::const_iterator const iFind(
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s_pInfos->_allRaiseInfos.find( rTypeName ) );
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if (iFind == s_pInfos->_allRaiseInfos.end())
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{
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pRaiseInfo = new RaiseInfo( pTypeDescr );
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// put into map
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pair< t_string2PtrMap::iterator, bool > insertion(
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s_pInfos->_allRaiseInfos.insert( t_string2PtrMap::value_type( rTypeName, pRaiseInfo ) ) );
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OSL_ENSURE( insertion.second, "### raise info insertion failed?!" );
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}
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else
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{
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// reuse existing info
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pRaiseInfo = iFind->second;
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}
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return pRaiseInfo;
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}
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//##################################################################################################
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//#### exported ####################################################################################
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//##################################################################################################
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//##################################################################################################
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type_info * msci_getRTTI( OUString const & rUNOname )
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{
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static RTTInfos * s_pRTTIs = 0;
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if (! s_pRTTIs)
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{
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MutexGuard aGuard( Mutex::getGlobalMutex() );
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if (! s_pRTTIs)
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{
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#ifdef LEAK_STATIC_DATA
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s_pRTTIs = new RTTInfos();
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#else
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static RTTInfos s_aRTTIs;
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s_pRTTIs = &s_aRTTIs;
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#endif
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}
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}
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return s_pRTTIs->getRTTI( rUNOname );
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}
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//##################################################################################################
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void msci_raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
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{
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// no ctor/dtor in here: this leads to dtors called twice upon RaiseException()!
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// thus this obj file will be compiled without opt, so no inling of
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// ExceptionInfos::getRaiseInfo()
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// construct cpp exception object
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typelib_TypeDescription * pTypeDescr = 0;
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TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
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void * pCppExc = alloca( pTypeDescr->nSize );
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::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
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// a must be
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OSL_ENSURE(
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sizeof(sal_Int32) == sizeof(void *),
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"### pointer size differs from sal_Int32!" );
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DWORD arFilterArgs[3];
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arFilterArgs[0] = MSVC_magic_number;
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arFilterArgs[1] = (DWORD)pCppExc;
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arFilterArgs[2] = (DWORD)ExceptionInfos::getRaiseInfo( pTypeDescr );
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// destruct uno exception
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::uno_any_destruct( pUnoExc, 0 );
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TYPELIB_DANGER_RELEASE( pTypeDescr );
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// last point to release anything not affected by stack unwinding
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RaiseException( MSVC_ExceptionCode, EXCEPTION_NONCONTINUABLE, 3, arFilterArgs );
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}
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//##############################################################################
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int msci_filterCppException(
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EXCEPTION_POINTERS * pPointers, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
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|
{
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|
if (pPointers == 0)
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return EXCEPTION_CONTINUE_SEARCH;
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|
EXCEPTION_RECORD * pRecord = pPointers->ExceptionRecord;
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// handle only C++ exceptions:
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|
if (pRecord == 0 || pRecord->ExceptionCode != MSVC_ExceptionCode)
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|
return EXCEPTION_CONTINUE_SEARCH;
|
|
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|
#if _MSC_VER < 1300 // MSVC -6
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bool rethrow = (pRecord->NumberParameters < 3 ||
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pRecord->ExceptionInformation[ 2 ] == 0);
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#else
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|
bool rethrow = __CxxDetectRethrow( &pRecord );
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OSL_ASSERT( pRecord == pPointers->ExceptionRecord );
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#endif
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|
if (rethrow && pRecord == pPointers->ExceptionRecord)
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|
{
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|
// hack to get msvcrt internal _curexception field:
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|
pRecord = *reinterpret_cast< EXCEPTION_RECORD ** >(
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reinterpret_cast< char * >( __pxcptinfoptrs() ) +
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// crt\src\mtdll.h:
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|
// offsetof (_tiddata, _curexception) -
|
|
// offsetof (_tiddata, _tpxcptinfoptrs):
|
|
#if _MSC_VER < 1300
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|
0x18 // msvcrt,dll
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|
#elif _MSC_VER < 1310
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|
0x20 // msvcr70.dll
|
|
#else
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|
0x24 // msvcr71.dll
|
|
#endif
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|
);
|
|
}
|
|
// rethrow: handle only C++ exceptions:
|
|
if (pRecord == 0 || pRecord->ExceptionCode != MSVC_ExceptionCode)
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
|
|
|
if (pRecord->NumberParameters == 3 &&
|
|
// pRecord->ExceptionInformation[ 0 ] == MSVC_magic_number &&
|
|
pRecord->ExceptionInformation[ 1 ] != 0 &&
|
|
pRecord->ExceptionInformation[ 2 ] != 0)
|
|
{
|
|
void * types = reinterpret_cast< RaiseInfo * >(
|
|
pRecord->ExceptionInformation[ 2 ] )->_types;
|
|
if (types != 0 && *reinterpret_cast< DWORD * >( types ) > 0) // count
|
|
{
|
|
ExceptionType * pType = *reinterpret_cast< ExceptionType ** >(
|
|
reinterpret_cast< DWORD * >( types ) + 1 );
|
|
if (pType != 0 && pType->_pTypeInfo != 0)
|
|
{
|
|
OUString aRTTIname(
|
|
OStringToOUString(
|
|
reinterpret_cast< __type_info * >(
|
|
pType->_pTypeInfo )->_m_d_name,
|
|
RTL_TEXTENCODING_ASCII_US ) );
|
|
OUString aUNOname( toUNOname( aRTTIname ) );
|
|
|
|
typelib_TypeDescription * pExcTypeDescr = 0;
|
|
typelib_typedescription_getByName(
|
|
&pExcTypeDescr, aUNOname.pData );
|
|
if (pExcTypeDescr == 0)
|
|
{
|
|
OUStringBuffer buf;
|
|
buf.appendAscii(
|
|
RTL_CONSTASCII_STRINGPARAM(
|
|
"[msci_uno bridge error] UNO type of "
|
|
"C++ exception unknown: \"") );
|
|
buf.append( aUNOname );
|
|
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM(
|
|
"\", RTTI-name=\"") );
|
|
buf.append( aRTTIname );
|
|
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\"!") );
|
|
RuntimeException exc(
|
|
buf.makeStringAndClear(), Reference< XInterface >() );
|
|
uno_type_any_constructAndConvert(
|
|
pUnoExc, &exc,
|
|
::getCppuType( &exc ).getTypeLibType(), pCpp2Uno );
|
|
// though this unknown exception leaks now, no user-defined
|
|
// exception is ever thrown thru the binary C-UNO dispatcher
|
|
// call stack.
|
|
}
|
|
else
|
|
{
|
|
// construct uno exception any
|
|
uno_any_constructAndConvert(
|
|
pUnoExc, (void *) pRecord->ExceptionInformation[1],
|
|
pExcTypeDescr, pCpp2Uno );
|
|
if (! rethrow)
|
|
{
|
|
uno_destructData(
|
|
(void *) pRecord->ExceptionInformation[1],
|
|
pExcTypeDescr, cpp_release );
|
|
}
|
|
typelib_typedescription_release( pExcTypeDescr );
|
|
}
|
|
|
|
return EXCEPTION_EXECUTE_HANDLER;
|
|
}
|
|
}
|
|
}
|
|
// though this unknown exception leaks now, no user-defined exception
|
|
// is ever thrown thru the binary C-UNO dispatcher call stack.
|
|
RuntimeException exc(
|
|
OUString( RTL_CONSTASCII_USTRINGPARAM(
|
|
"[msci_uno bridge error] unexpected "
|
|
"C++ exception occured!") ),
|
|
Reference< XInterface >() );
|
|
uno_type_any_constructAndConvert(
|
|
pUnoExc, &exc, ::getCppuType( &exc ).getTypeLibType(), pCpp2Uno );
|
|
return EXCEPTION_EXECUTE_HANDLER;
|
|
}
|
|
|
|
}
|
|
|
|
#pragma pack(pop)
|
|
|