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Diffstat (limited to '')
-rw-r--r-- | bridges/source/cpp_uno/gcc3_linux_intel/except.cxx | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_linux_intel/except.cxx b/bridges/source/cpp_uno/gcc3_linux_intel/except.cxx new file mode 100644 index 000000000..79a37803b --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_linux_intel/except.cxx @@ -0,0 +1,302 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <cstdio> +#include <cstring> +#include <dlfcn.h> + +#include <rtl/strbuf.hxx> +#include <rtl/ustrbuf.hxx> +#include <osl/mutex.hxx> +#include <sal/log.hxx> + +#include <com/sun/star/uno/genfunc.hxx> +#include <com/sun/star/uno/RuntimeException.hpp> +#include <typelib/typedescription.hxx> +#include <unordered_map> +#include "share.hxx" + +using namespace ::std; +using namespace ::osl; +using namespace ::com::sun::star::uno; +using namespace ::__cxxabiv1; + + +namespace CPPU_CURRENT_NAMESPACE +{ + +void dummy_can_throw_anything( char const * ) +{ +} + +static OUString toUNOname( char const * p ) +{ +#if OSL_DEBUG_LEVEL > 1 + char const * start = p; +#endif + + // example: N3com3sun4star4lang24IllegalArgumentExceptionE + + OUStringBuffer buf( 64 ); + assert( 'N' == *p ); + ++p; // skip N + + while ('E' != *p) + { + // read chars count + long n = (*p++ - '0'); + while ('0' <= *p && '9' >= *p) + { + n *= 10; + n += (*p++ - '0'); + } + buf.appendAscii( p, n ); + p += n; + if ('E' != *p) + buf.append( '.' ); + } + +#if OSL_DEBUG_LEVEL > 1 + OUString ret( buf.makeStringAndClear() ); + OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) ); + fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() ); + return ret; +#else + return buf.makeStringAndClear(); +#endif +} + +class RTTI +{ + typedef std::unordered_map< OUString, type_info * > t_rtti_map; + + Mutex m_mutex; + t_rtti_map m_rttis; + t_rtti_map m_generatedRttis; + +#if !defined ANDROID + void * m_hApp; +#endif + +public: + RTTI(); + ~RTTI(); + + type_info * getRTTI( typelib_CompoundTypeDescription * ); +}; + +RTTI::RTTI() +#if !defined ANDROID + : m_hApp( dlopen(nullptr, RTLD_LAZY) ) +#endif +{ +} + +RTTI::~RTTI() +{ +#if !defined ANDROID + dlclose( m_hApp ); +#endif +} + + +type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) +{ + type_info * rtti; + + OUString const & unoName = OUString::unacquired(&pTypeDescr->aBase.pTypeName); + + MutexGuard guard( m_mutex ); + t_rtti_map::const_iterator iRttiFind( m_rttis.find( unoName ) ); + if (iRttiFind == m_rttis.end()) + { + // RTTI symbol + OStringBuffer buf( 64 ); + buf.append( "_ZTIN" ); + sal_Int32 index = 0; + do + { + OUString token( unoName.getToken( 0, '.', index ) ); + buf.append( token.getLength() ); + OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) ); + buf.append( c_token ); + } + while (index >= 0); + buf.append( 'E' ); + + OString symName( buf.makeStringAndClear() ); +#if !defined ANDROID + rtti = static_cast<type_info *>(dlsym( m_hApp, symName.getStr() )); +#else + rtti = static_cast<type_info *>(dlsym( RTLD_DEFAULT, symName.getStr() )); +#endif + + if (rtti) + { + pair< t_rtti_map::iterator, bool > insertion( + m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); + SAL_WARN_IF( !insertion.second, "bridges", "### inserting new rtti failed?!" ); + } + else + { + // try to lookup the symbol in the generated rtti map + t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) ); + if (iFind == m_generatedRttis.end()) + { + // we must generate it ! + // symbol and rtti-name is nearly identical, + // the symbol is prefixed with _ZTI + char const * rttiName = symName.getStr() +4; +#if OSL_DEBUG_LEVEL > 1 + fprintf( stderr,"generated rtti for %s\n", rttiName ); +#endif + if (pTypeDescr->pBaseTypeDescription) + { + // ensure availability of base + type_info * base_rtti = getRTTI( + pTypeDescr->pBaseTypeDescription); + rtti = new __si_class_type_info( + strdup( rttiName ), static_cast<__class_type_info *>(base_rtti) ); + } + else + { + // this class has no base class + rtti = new __class_type_info( strdup( rttiName ) ); + } + + pair< t_rtti_map::iterator, bool > insertion( + m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); + SAL_WARN_IF( !insertion.second, "bridges", "### inserting new generated rtti failed?!" ); + } + else // taking already generated rtti + { + rtti = iFind->second; + } + } + } + else + { + rtti = iRttiFind->second; + } + + return rtti; +} + + +extern "C" { +static void _GLIBCXX_CDTOR_CALLABI deleteException( void * pExc ) +{ + __cxa_exception const * header = static_cast<__cxa_exception const *>(pExc) - 1; + typelib_TypeDescription * pTD = nullptr; + OUString unoName( toUNOname( header->exceptionType->name() ) ); + ::typelib_typedescription_getByName( &pTD, unoName.pData ); + assert(pTD && "### unknown exception type! leaving out destruction => leaking!!!"); + if (pTD) + { + ::uno_destructData( pExc, pTD, cpp_release ); + ::typelib_typedescription_release( pTD ); + } +} +} + +void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp ) +{ +#if OSL_DEBUG_LEVEL > 1 + OString cstr( + OUStringToOString( + OUString::unacquired( &pUnoExc->pType->pTypeName ), + RTL_TEXTENCODING_ASCII_US ) ); + fprintf( stderr, "> uno exception occurred: %s\n", cstr.getStr() ); +#endif + void * pCppExc; + type_info * rtti; + + { + // construct cpp exception object + typelib_TypeDescription * pTypeDescr = nullptr; + TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType ); + assert(pTypeDescr); + if (! pTypeDescr) + { + throw RuntimeException( + "cannot get typedescription for type " + + OUString::unacquired( &pUnoExc->pType->pTypeName ) ); + } + + pCppExc = __cxxabiv1::__cxa_allocate_exception( pTypeDescr->nSize ); + ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp ); + + // destruct uno exception + ::uno_any_destruct( pUnoExc, nullptr ); + // avoiding locked counts + static RTTI rtti_data; + rtti = rtti_data.getRTTI(reinterpret_cast<typelib_CompoundTypeDescription*>(pTypeDescr)); + TYPELIB_DANGER_RELEASE( pTypeDescr ); + assert(rtti && "### no rtti for throwing exception!"); + if (! rtti) + { + throw RuntimeException( + "no rtti for type " + + OUString::unacquired( &pUnoExc->pType->pTypeName ) ); + } + } + + __cxxabiv1::__cxa_throw( pCppExc, rtti, deleteException ); +} + +void fillUnoException(uno_Any * pUnoExc, uno_Mapping * pCpp2Uno) +{ + __cxa_exception * header = reinterpret_cast<CPPU_CURRENT_NAMESPACE::__cxa_eh_globals*>( + __cxxabiv1::__cxa_get_globals())->caughtExceptions; + if (! header) + { + RuntimeException aRE( "no exception header!" ); + Type const & rType = cppu::UnoType<decltype(aRE)>::get(); + uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno ); + SAL_WARN("bridges", aRE.Message); + return; + } + + std::type_info *exceptionType = __cxxabiv1::__cxa_current_exception_type(); + + typelib_TypeDescription * pExcTypeDescr = nullptr; + OUString unoName( toUNOname( exceptionType->name() ) ); +#if OSL_DEBUG_LEVEL > 1 + OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) ); + fprintf( stderr, "> c++ exception occurred: %s\n", cstr_unoName.getStr() ); +#endif + typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData ); + if (nullptr == pExcTypeDescr) + { + RuntimeException aRE( "exception type not found: " + unoName ); + Type const & rType = cppu::UnoType<decltype(aRE)>::get(); + uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno ); + SAL_WARN("bridges", aRE.Message); + } + else + { + // construct uno exception any + uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno ); + typelib_typedescription_release( pExcTypeDescr ); + } +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |