1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_bridges.hxx" 26 27 #include <stdio.h> 28 #include <dlfcn.h> 29 #include <cxxabi.h> 30 #include <hash_map> 31 32 #include <rtl/strbuf.hxx> 33 #include <rtl/ustrbuf.hxx> 34 #include <osl/diagnose.h> 35 #include <osl/mutex.hxx> 36 37 #include <com/sun/star/uno/genfunc.hxx> 38 #include <typelib/typedescription.hxx> 39 #include <uno/any2.h> 40 41 #include "share.hxx" 42 43 44 using namespace ::std; 45 using namespace ::osl; 46 using namespace ::rtl; 47 using namespace ::com::sun::star::uno; 48 using namespace ::__cxxabiv1; 49 50 51 namespace CPPU_CURRENT_NAMESPACE 52 { 53 54 void dummy_can_throw_anything( char const * ) 55 { 56 } 57 58 //================================================================================================== 59 static OUString toUNOname( char const * p ) SAL_THROW( () ) 60 { 61 #ifdef DEBUG 62 char const * start = p; 63 #endif 64 65 // example: N3com3sun4star4lang24IllegalArgumentExceptionE 66 67 OUStringBuffer buf( 64 ); 68 OSL_ASSERT( 'N' == *p ); 69 ++p; // skip N 70 71 while ('E' != *p) 72 { 73 // read chars count 74 long n = (*p++ - '0'); 75 while ('0' <= *p && '9' >= *p) 76 { 77 n *= 10; 78 n += (*p++ - '0'); 79 } 80 buf.appendAscii( p, n ); 81 p += n; 82 if ('E' != *p) 83 buf.append( (sal_Unicode)'.' ); 84 } 85 86 #ifdef DEBUG 87 OUString ret( buf.makeStringAndClear() ); 88 OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) ); 89 fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() ); 90 return ret; 91 #else 92 return buf.makeStringAndClear(); 93 #endif 94 } 95 96 //================================================================================================== 97 class RTTI 98 { 99 typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map; 100 101 Mutex m_mutex; 102 t_rtti_map m_rttis; 103 t_rtti_map m_generatedRttis; 104 105 void * m_hApp; 106 107 public: 108 RTTI() SAL_THROW( () ); 109 ~RTTI() SAL_THROW( () ); 110 111 type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () ); 112 }; 113 //__________________________________________________________________________________________________ 114 RTTI::RTTI() SAL_THROW( () ) 115 : m_hApp( dlopen( 0, RTLD_LAZY ) ) 116 { 117 } 118 //__________________________________________________________________________________________________ 119 RTTI::~RTTI() SAL_THROW( () ) 120 { 121 dlclose( m_hApp ); 122 } 123 124 //__________________________________________________________________________________________________ 125 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () ) 126 { 127 type_info * rtti; 128 129 OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName; 130 131 MutexGuard guard( m_mutex ); 132 t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) ); 133 if (iFind == m_rttis.end()) 134 { 135 // RTTI symbol 136 OStringBuffer buf( 64 ); 137 buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") ); 138 sal_Int32 index = 0; 139 do 140 { 141 OUString token( unoName.getToken( 0, '.', index ) ); 142 buf.append( token.getLength() ); 143 OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) ); 144 buf.append( c_token ); 145 } 146 while (index >= 0); 147 buf.append( 'E' ); 148 149 OString symName( buf.makeStringAndClear() ); 150 rtti = (type_info *)dlsym( m_hApp, symName.getStr() ); 151 152 if (rtti) 153 { 154 pair< t_rtti_map::iterator, bool > insertion( 155 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); 156 OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" ); 157 } 158 else 159 { 160 // try to lookup the symbol in the generated rtti map 161 t_rtti_map::const_iterator iiFind( m_generatedRttis.find( unoName ) ); 162 if (iiFind == m_generatedRttis.end()) 163 { 164 // we must generate it ! 165 // symbol and rtti-name is nearly identical, 166 // the symbol is prefixed with _ZTI 167 char const * rttiName = symName.getStr() +4; 168 #ifdef DEBUG 169 fprintf( stderr,"generated rtti for %s\n", rttiName ); 170 #endif 171 if (pTypeDescr->pBaseTypeDescription) 172 { 173 // ensure availability of base 174 type_info * base_rtti = getRTTI( 175 (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription ); 176 rtti = new __si_class_type_info( 177 strdup( rttiName ), (__class_type_info *)base_rtti ); 178 } 179 else 180 { 181 // this class has no base class 182 rtti = new __class_type_info( strdup( rttiName ) ); 183 } 184 185 pair< t_rtti_map::iterator, bool > insertion( 186 m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); 187 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" ); 188 } 189 else // taking already generated rtti 190 { 191 rtti = iiFind->second; 192 } 193 } 194 } 195 else 196 { 197 rtti = iFind->second; 198 } 199 200 return rtti; 201 } 202 203 //-------------------------------------------------------------------------------------------------- 204 static void deleteException( void * pExc ) 205 { 206 __cxa_exception const * header = ((__cxa_exception const *)pExc - 1); 207 typelib_TypeDescription * pTD = 0; 208 OUString unoName( toUNOname( header->exceptionType->name() ) ); 209 ::typelib_typedescription_getByName( &pTD, unoName.pData ); 210 OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" ); 211 if (pTD) 212 { 213 ::uno_destructData( pExc, pTD, cpp_release ); 214 ::typelib_typedescription_release( pTD ); 215 } 216 } 217 218 //================================================================================================== 219 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp ) 220 { 221 void * pCppExc; 222 type_info * rtti; 223 224 { 225 // construct cpp exception object 226 typelib_TypeDescription * pTypeDescr = 0; 227 TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType ); 228 OSL_ASSERT( pTypeDescr ); 229 if (! pTypeDescr) 230 terminate(); 231 232 pCppExc = __cxa_allocate_exception( pTypeDescr->nSize ); 233 ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp ); 234 235 // destruct uno exception 236 ::uno_any_destruct( pUnoExc, 0 ); 237 // avoiding locked counts 238 static RTTI * s_rtti = 0; 239 if (! s_rtti) 240 { 241 MutexGuard guard( Mutex::getGlobalMutex() ); 242 if (! s_rtti) 243 { 244 #ifdef LEAK_STATIC_DATA 245 s_rtti = new RTTI(); 246 #else 247 static RTTI rtti_data; 248 s_rtti = &rtti_data; 249 #endif 250 } 251 } 252 rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr ); 253 TYPELIB_DANGER_RELEASE( pTypeDescr ); 254 OSL_ENSURE( rtti, "### no rtti for throwing exception!" ); 255 if (! rtti) 256 terminate(); 257 } 258 259 __cxa_throw( pCppExc, rtti, deleteException ); 260 } 261 262 //================================================================================================== 263 void fillUnoException( __cxa_exception * header, uno_Any * pExc, uno_Mapping * pCpp2Uno ) 264 { 265 OSL_ENSURE( header, "### no exception header!!!" ); 266 if (! header) 267 terminate(); 268 269 typelib_TypeDescription * pExcTypeDescr = 0; 270 OUString unoName( toUNOname( header->exceptionType->name() ) ); 271 ::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData ); 272 OSL_ENSURE( pExcTypeDescr, "### can not get type description for exception!!!" ); 273 if (! pExcTypeDescr) 274 terminate(); 275 276 // construct uno exception any 277 ::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno ); 278 ::typelib_typedescription_release( pExcTypeDescr ); 279 } 280 281 } 282 283