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 <string.h> 29 #include <dlfcn.h> 30 #include <cxxabi.h> 31 #include <hash_map> 32 33 #include <rtl/strbuf.hxx> 34 #include <rtl/ustrbuf.hxx> 35 #include <osl/diagnose.h> 36 #include <osl/mutex.hxx> 37 38 #include <com/sun/star/uno/genfunc.hxx> 39 #include <typelib/typedescription.hxx> 40 #include <uno/any2.h> 41 42 #include "share.hxx" 43 44 45 using namespace ::std; 46 using namespace ::osl; 47 using namespace ::rtl; 48 using namespace ::com::sun::star::uno; 49 using namespace ::__cxxabiv1; 50 51 52 namespace CPPU_CURRENT_NAMESPACE 53 { 54 55 void dummy_can_throw_anything( char const * ) 56 { 57 } 58 59 //================================================================================================== 60 static OUString toUNOname( char const * p ) SAL_THROW( () ) 61 { 62 #if OSL_DEBUG_LEVEL > 1 63 char const * start = p; 64 #endif 65 66 // example: N3com3sun4star4lang24IllegalArgumentExceptionE 67 68 OUStringBuffer buf( 64 ); 69 OSL_ASSERT( 'N' == *p ); 70 ++p; // skip N 71 72 while ('E' != *p) 73 { 74 // read chars count 75 long n = (*p++ - '0'); 76 while ('0' <= *p && '9' >= *p) 77 { 78 n *= 10; 79 n += (*p++ - '0'); 80 } 81 buf.appendAscii( p, n ); 82 p += n; 83 if ('E' != *p) 84 buf.append( (sal_Unicode)'.' ); 85 } 86 87 #if OSL_DEBUG_LEVEL > 1 88 OUString ret( buf.makeStringAndClear() ); 89 OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) ); 90 fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() ); 91 return ret; 92 #else 93 return buf.makeStringAndClear(); 94 #endif 95 } 96 97 //================================================================================================== 98 class RTTI 99 { 100 typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map; 101 102 Mutex m_mutex; 103 t_rtti_map m_rttis; 104 t_rtti_map m_generatedRttis; 105 106 void * m_hApp; 107 108 public: 109 RTTI() SAL_THROW( () ); 110 ~RTTI() SAL_THROW( () ); 111 112 type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () ); 113 }; 114 //__________________________________________________________________________________________________ 115 RTTI::RTTI() SAL_THROW( () ) 116 : m_hApp( dlopen( 0, RTLD_LAZY ) ) 117 { 118 } 119 //__________________________________________________________________________________________________ 120 RTTI::~RTTI() SAL_THROW( () ) 121 { 122 dlclose( m_hApp ); 123 } 124 125 //__________________________________________________________________________________________________ 126 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () ) 127 { 128 type_info * rtti; 129 130 OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName; 131 132 MutexGuard guard( m_mutex ); 133 t_rtti_map::const_iterator iRttiFind( m_rttis.find( unoName ) ); 134 if (iRttiFind == m_rttis.end()) 135 { 136 // RTTI symbol 137 OStringBuffer buf( 64 ); 138 buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") ); 139 sal_Int32 index = 0; 140 do 141 { 142 OUString token( unoName.getToken( 0, '.', index ) ); 143 buf.append( token.getLength() ); 144 OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) ); 145 buf.append( c_token ); 146 } 147 while (index >= 0); 148 buf.append( 'E' ); 149 150 OString symName( buf.makeStringAndClear() ); 151 rtti = (type_info *)dlsym( m_hApp, symName.getStr() ); 152 153 if (rtti) 154 { 155 pair< t_rtti_map::iterator, bool > insertion( 156 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); 157 OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" ); 158 } 159 else 160 { 161 // try to lookup the symbol in the generated rtti map 162 t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) ); 163 if (iFind == m_generatedRttis.end()) 164 { 165 // we must generate it ! 166 // symbol and rtti-name is nearly identical, 167 // the symbol is prefixed with _ZTI 168 char const * rttiName = symName.getStr() +4; 169 #if OSL_DEBUG_LEVEL > 1 170 fprintf( stderr,"generated rtti for %s\n", rttiName ); 171 #endif 172 if (pTypeDescr->pBaseTypeDescription) 173 { 174 // ensure availability of base 175 type_info * base_rtti = getRTTI( 176 (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription ); 177 rtti = new __si_class_type_info( 178 strdup( rttiName ), (__class_type_info *)base_rtti ); 179 } 180 else 181 { 182 // this class has no base class 183 rtti = new __class_type_info( strdup( rttiName ) ); 184 } 185 186 pair< t_rtti_map::iterator, bool > insertion( 187 m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); 188 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" ); 189 } 190 else // taking already generated rtti 191 { 192 rtti = iFind->second; 193 } 194 } 195 } 196 else 197 { 198 rtti = iRttiFind->second; 199 } 200 201 return rtti; 202 } 203 204 //-------------------------------------------------------------------------------------------------- 205 static void deleteException( void * pExc ) 206 { 207 __cxa_exception const * header = ((__cxa_exception const *)pExc - 1); 208 typelib_TypeDescription * pTD = 0; 209 OUString unoName( toUNOname( header->exceptionType->name() ) ); 210 ::typelib_typedescription_getByName( &pTD, unoName.pData ); 211 OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" ); 212 if (pTD) 213 { 214 ::uno_destructData( pExc, pTD, cpp_release ); 215 ::typelib_typedescription_release( pTD ); 216 } 217 } 218 219 //================================================================================================== 220 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp ) 221 { 222 void * pCppExc; 223 type_info * rtti; 224 225 { 226 // construct cpp exception object 227 typelib_TypeDescription * pTypeDescr = 0; 228 TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType ); 229 OSL_ASSERT( pTypeDescr ); 230 if (! pTypeDescr) 231 terminate(); 232 233 pCppExc = __cxa_allocate_exception( pTypeDescr->nSize ); 234 ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp ); 235 236 // destruct uno exception 237 ::uno_any_destruct( pUnoExc, 0 ); 238 // avoiding locked counts 239 static RTTI * s_rtti = 0; 240 if (! s_rtti) 241 { 242 MutexGuard guard( Mutex::getGlobalMutex() ); 243 if (! s_rtti) 244 { 245 #ifdef LEAK_STATIC_DATA 246 s_rtti = new RTTI(); 247 #else 248 static RTTI rtti_data; 249 s_rtti = &rtti_data; 250 #endif 251 } 252 } 253 rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr ); 254 TYPELIB_DANGER_RELEASE( pTypeDescr ); 255 OSL_ENSURE( rtti, "### no rtti for throwing exception!" ); 256 if (! rtti) 257 terminate(); 258 } 259 260 __cxa_throw( pCppExc, rtti, deleteException ); 261 } 262 263 //================================================================================================== 264 void fillUnoException( __cxa_exception * header, uno_Any * pExc, uno_Mapping * pCpp2Uno ) 265 { 266 OSL_ENSURE( header, "### no exception header!!!" ); 267 if (! header) 268 terminate(); 269 270 typelib_TypeDescription * pExcTypeDescr = 0; 271 OUString unoName( toUNOname( header->exceptionType->name() ) ); 272 ::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData ); 273 OSL_ENSURE( pExcTypeDescr, "### can not get type description for exception!!!" ); 274 if (! pExcTypeDescr) 275 terminate(); 276 277 // construct uno exception any 278 ::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno ); 279 ::typelib_typedescription_release( pExcTypeDescr ); 280 } 281 282 } 283 284