bridges/source/cpp_uno/gcc3_freebsd_intel/except.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_bridges.hxx"
  33
  34 #include <stdio.h>
  35 #include <dlfcn.h>
  36 #include <cxxabi.h>
  37 #include <hash_map>
  38 #include <sys/param.h>
  39
  40 #include <rtl/strbuf.hxx>
  41 #include <rtl/ustrbuf.hxx>
  42 #include <osl/diagnose.h>
  43 #include <osl/mutex.hxx>
  44
  45 #include <com/sun/star/uno/genfunc.hxx>
  46 #include "com/sun/star/uno/RuntimeException.hpp"
  47 #include <typelib/typedescription.hxx>
  48 #include <uno/any2.h>
  49
  50 #include "share.hxx"
  51
  52
  53 using namespace ::std;
  54 using namespace ::osl;
  55 using namespace ::rtl;
  56 using namespace ::com::sun::star::uno;
  57 using namespace ::__cxxabiv1;
  58
  59
  60 namespace CPPU_CURRENT_NAMESPACE
  61 {
  62
  63 void dummy_can_throw_anything( char const * )
  64 {
  65 }
  66
  67 //==================================================================================================
  68 static OUString toUNOname( char const * p ) SAL_THROW( () )
  69 {
  70 #if OSL_DEBUG_LEVEL > 1
  71     char const * start = p;
  72 #endif
  73
  74     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
  75
  76     OUStringBuffer buf( 64 );
  77     OSL_ASSERT( 'N' == *p );
  78     ++p; // skip N
  79
  80     while ('E' != *p)
  81     {
  82         // read chars count
  83         long n = (*p++ - '0');
  84         while ('0' <= *p && '9' >= *p)
  85         {
  86             n *= 10;
  87             n += (*p++ - '0');
  88         }
  89         buf.appendAscii( p, n );
  90         p += n;
  91         if ('E' != *p)
  92             buf.append( (sal_Unicode)'.' );
  93     }
  94
  95 #if OSL_DEBUG_LEVEL > 1
  96     OUString ret( buf.makeStringAndClear() );
  97     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
  98     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
  99     return ret;
 100 #else
 101     return buf.makeStringAndClear();
 102 #endif
 103 }
 104
 105 //==================================================================================================
 106 class RTTI
 107 {
 108     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
 109
 110     Mutex m_mutex;
 111     t_rtti_map m_rttis;
 112     t_rtti_map m_generatedRttis;
 113
 114     void * m_hApp;
 115
 116 public:
 117     RTTI() SAL_THROW( () );
 118     ~RTTI() SAL_THROW( () );
 119
 120     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
 121 };
 122 //__________________________________________________________________________________________________
 123 RTTI::RTTI() SAL_THROW( () )
 124 #if __FreeBSD_version < 602103
 125     : m_hApp( dlopen( 0, RTLD_NOW | RTLD_GLOBAL ) )
 126 #else
 127     : m_hApp( dlopen( 0, RTLD_LAZY ) )
 128 #endif
 129 {
 130 }
 131 //__________________________________________________________________________________________________
 132 RTTI::~RTTI() SAL_THROW( () )
 133 {
 134     dlclose( m_hApp );
 135 }
 136
 137 //__________________________________________________________________________________________________
 138 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
 139 {
 140     type_info * rtti;
 141
 142     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
 143
 144     MutexGuard guard( m_mutex );
 145     t_rtti_map::const_iterator iRttiFind( m_rttis.find( unoName ) );
 146     if (iRttiFind == m_rttis.end())
 147     {
 148         // RTTI symbol
 149         OStringBuffer buf( 64 );
 150         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
 151         sal_Int32 index = 0;
 152         do
 153         {
 154             OUString token( unoName.getToken( 0, '.', index ) );
 155             buf.append( token.getLength() );
 156             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
 157             buf.append( c_token );
 158         }
 159         while (index >= 0);
 160         buf.append( 'E' );
 161
 162         OString symName( buf.makeStringAndClear() );
 163 #if __FreeBSD_version < 602103 /* #i22253# */
 164         rtti = (type_info *)dlsym( RTLD_DEFAULT, symName.getStr() );
 165 #else
 166         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
 167 #endif
 168
 169         if (rtti)
 170         {
 171             pair< t_rtti_map::iterator, bool > insertion(
 172                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 173             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
 174         }
 175         else
 176         {
 177             // try to lookup the symbol in the generated rtti map
 178             t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
 179             if (iFind == m_generatedRttis.end())
 180             {
 181                 // we must generate it !
 182                 // symbol and rtti-name is nearly identical,
 183                 // the symbol is prefixed with _ZTI
 184                 char const * rttiName = symName.getStr() +4;
 185 #if OSL_DEBUG_LEVEL > 1
 186                 fprintf( stderr,"generated rtti for %s\n", rttiName );
 187 #endif
 188                 if (pTypeDescr->pBaseTypeDescription)
 189                 {
 190                     // ensure availability of base
 191                     type_info * base_rtti = getRTTI(
 192                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
 193                     rtti = new __si_class_type_info(
 194                         strdup( rttiName ), (__class_type_info *)base_rtti );
 195                 }
 196                 else
 197                 {
 198                     // this class has no base class
 199                     rtti = new __class_type_info( strdup( rttiName ) );
 200                 }
 201
 202                 pair< t_rtti_map::iterator, bool > insertion(
 203                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 204                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
 205             }
 206             else // taking already generated rtti
 207             {
 208                 rtti = iFind->second;
 209             }
 210         }
 211     }
 212     else
 213     {
 214         rtti = iRttiFind->second;
 215     }
 216
 217     return rtti;
 218 }
 219
 220 //--------------------------------------------------------------------------------------------------
 221 static void deleteException( void * pExc )
 222 {
 223     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
 224     typelib_TypeDescription * pTD = 0;
 225     OUString unoName( toUNOname( header->exceptionType->name() ) );
 226     ::typelib_typedescription_getByName( &pTD, unoName.pData );
 227     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
 228     if (pTD)
 229     {
 230         ::uno_destructData( pExc, pTD, cpp_release );
 231         ::typelib_typedescription_release( pTD );
 232     }
 233 }
 234
 235 //==================================================================================================
 236 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 237 {
 238 #if OSL_DEBUG_LEVEL > 1
 239     OString cstr(
 240         OUStringToOString(
 241             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 242             RTL_TEXTENCODING_ASCII_US ) );
 243     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
 244 #endif
 245     void * pCppExc;
 246     type_info * rtti;
 247
 248     {
 249     // construct cpp exception object
 250     typelib_TypeDescription * pTypeDescr = 0;
 251     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 252     OSL_ASSERT( pTypeDescr );
 253     if (! pTypeDescr)
 254     {
 255         throw RuntimeException(
 256             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
 257             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 258             Reference< XInterface >() );
 259     }
 260
 261     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 262     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 263
 264     // destruct uno exception
 265     ::uno_any_destruct( pUnoExc, 0 );
 266     // avoiding locked counts
 267     static RTTI * s_rtti = 0;
 268     if (! s_rtti)
 269     {
 270         MutexGuard guard( Mutex::getGlobalMutex() );
 271         if (! s_rtti)
 272         {
 273 #ifdef LEAK_STATIC_DATA
 274             s_rtti = new RTTI();
 275 #else
 276             static RTTI rtti_data;
 277             s_rtti = &rtti_data;
 278 #endif
 279         }
 280     }
 281     rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 282     TYPELIB_DANGER_RELEASE( pTypeDescr );
 283     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 284     if (! rtti)
 285     {
 286         throw RuntimeException(
 287             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
 288             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 289             Reference< XInterface >() );
 290     }
 291     }
 292
 293     __cxa_throw( pCppExc, rtti, deleteException );
 294 }
 295
 296 //==================================================================================================
 297 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
 298 {
 299     if (! header)
 300     {
 301         RuntimeException aRE(
 302             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
 303             Reference< XInterface >() );
 304         Type const & rType = ::getCppuType( &aRE );
 305         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 306 #if OSL_DEBUG_LEVEL > 0
 307         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 308         OSL_ENSURE( 0, cstr.getStr() );
 309 #endif
 310         return;
 311     }
 312
 313     typelib_TypeDescription * pExcTypeDescr = 0;
 314     OUString unoName( toUNOname( header->exceptionType->name() ) );
 315 #if OSL_DEBUG_LEVEL > 1
 316     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
 317     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
 318 #endif
 319     typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 320     if (0 == pExcTypeDescr)
 321     {
 322         RuntimeException aRE(
 323             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
 324             Reference< XInterface >() );
 325         Type const & rType = ::getCppuType( &aRE );
 326         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 327 #if OSL_DEBUG_LEVEL > 0
 328         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 329         OSL_ENSURE( 0, cstr.getStr() );
 330 #endif
 331     }
 332     else
 333     {
 334         // construct uno exception any
 335         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 336         typelib_typedescription_release( pExcTypeDescr );
 337     }
 338 }
 339
 340 }
 341