bridges/source/cpp_uno/gcc3_solaris_sparc/except.cxx

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