bridges/source/cpp_uno/gcc3_linux_arm/except.cxx

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  30
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <dlfcn.h>
  34 #include <cxxabi.h>
  35 #include <hash_map>
  36
  37 #include <rtl/strbuf.hxx>
  38 #include <rtl/ustrbuf.hxx>
  39 #include <osl/diagnose.h>
  40 #include <osl/mutex.hxx>
  41
  42 #include <com/sun/star/uno/genfunc.hxx>
  43 #include "com/sun/star/uno/RuntimeException.hpp"
  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 extern sal_Int32 * pHack;
  57 extern sal_Int32 nHack;
  58
  59 namespace CPPU_CURRENT_NAMESPACE
  60 {
  61     void dummy_can_throw_anything( char const * )
  62     {
  63     }
  64
  65     //===================================================================
  66     static OUString toUNOname( char const * p ) SAL_THROW( () )
  67     {
  68 #if OSL_DEBUG_LEVEL > 1
  69         char const * start = p;
  70 #endif
  71
  72         // example: N3com3sun4star4lang24IllegalArgumentExceptionE
  73
  74         OUStringBuffer buf( 64 );
  75         OSL_ASSERT( 'N' == *p );
  76         ++p; // skip N
  77
  78         while ('E' != *p)
  79         {
  80             // read chars count
  81             long n = (*p++ - '0');
  82             while ('0' <= *p && '9' >= *p)
  83             {
  84                 n *= 10;
  85                 n += (*p++ - '0');
  86             }
  87             buf.appendAscii( p, n );
  88             p += n;
  89             if ('E' != *p)
  90                 buf.append( (sal_Unicode)'.' );
  91         }
  92
  93 #if OSL_DEBUG_LEVEL > 1
  94         OUString ret( buf.makeStringAndClear() );
  95         OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
  96         fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
  97         return ret;
  98 #else
  99         return buf.makeStringAndClear();
 100 #endif
 101     }
 102
 103     //=====================================================================
 104     class RTTI
 105     {
 106         typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
 107
 108         Mutex m_mutex;
 109         t_rtti_map m_rttis;
 110         t_rtti_map m_generatedRttis;
 111
 112         void * m_hApp;
 113
 114     public:
 115         RTTI() SAL_THROW( () );
 116         ~RTTI() SAL_THROW( () );
 117
 118         type_info * getRTTI(typelib_CompoundTypeDescription *) SAL_THROW( () );
 119     };
 120     //____________________________________________________________________
 121     RTTI::RTTI() SAL_THROW( () )
 122         : m_hApp( dlopen( 0, RTLD_LAZY ) )
 123     {
 124     }
 125     //____________________________________________________________________
 126     RTTI::~RTTI() SAL_THROW( () )
 127     {
 128         dlclose( m_hApp );
 129     }
 130
 131     //____________________________________________________________________
 132     type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
 133     {
 134         type_info * rtti;
 135
 136         OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
 137
 138         MutexGuard guard( m_mutex );
 139         t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
 140         if (iFind == m_rttis.end())
 141         {
 142             // RTTI symbol
 143             OStringBuffer buf( 64 );
 144             buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
 145             sal_Int32 index = 0;
 146             do
 147             {
 148                 OUString token( unoName.getToken( 0, '.', index ) );
 149                 buf.append( token.getLength() );
 150                 OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
 151                 buf.append( c_token );
 152             }
 153             while (index >= 0);
 154             buf.append( 'E' );
 155
 156             OString symName( buf.makeStringAndClear() );
 157             rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
 158
 159             if (rtti)
 160             {
 161                 pair< t_rtti_map::iterator, bool > insertion(
 162                     m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 163                 OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
 164             }
 165             else
 166             {
 167                 // try to lookup the symbol in the generated rtti map
 168                 t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
 169                 if (iFind == m_generatedRttis.end())
 170                 {
 171                     // we must generate it !
 172                     // symbol and rtti-name is nearly identical,
 173                     // the symbol is prefixed with _ZTI
 174                     char const * rttiName = symName.getStr() +4;
 175 #if OSL_DEBUG_LEVEL > 1
 176                     fprintf( stderr,"generated rtti for %s\n", rttiName );
 177 #endif
 178                     if (pTypeDescr->pBaseTypeDescription)
 179                     {
 180                         // ensure availability of base
 181                         type_info * base_rtti = getRTTI(
 182                             (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
 183                         rtti = new __si_class_type_info(
 184                             strdup( rttiName ), (__class_type_info *)base_rtti );
 185                     }
 186                     else
 187                     {
 188                         // this class has no base class
 189                         rtti = new __class_type_info( strdup( rttiName ) );
 190                     }
 191
 192                     pair< t_rtti_map::iterator, bool > insertion(
 193                         m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 194                     OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
 195                 }
 196                 else // taking already generated rtti
 197                 {
 198                     rtti = iFind->second;
 199                 }
 200             }
 201         }
 202         else
 203         {
 204             rtti = iFind->second;
 205         }
 206
 207         return rtti;
 208     }
 209
 210     //------------------------------------------------------------------
 211     static void deleteException( void * pExc )
 212     {
 213         __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
 214         typelib_TypeDescription * pTD = 0;
 215         OUString unoName( toUNOname( header->exceptionType->name() ) );
 216         ::typelib_typedescription_getByName( &pTD, unoName.pData );
 217         OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
 218         if (pTD)
 219         {
 220             ::uno_destructData( pExc, pTD, cpp_release );
 221             ::typelib_typedescription_release( pTD );
 222         }
 223     }
 224
 225     //==================================================================
 226     void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 227     {
 228 #if OSL_DEBUG_LEVEL > 1
 229         OString cstr(
 230             OUStringToOString(
 231                 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 232                 RTL_TEXTENCODING_ASCII_US ) );
 233         fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
 234 #endif
 235         void * pCppExc;
 236         type_info * rtti;
 237
 238         {
 239         // construct cpp exception object
 240         typelib_TypeDescription * pTypeDescr = 0;
 241         TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 242         OSL_ASSERT( pTypeDescr );
 243         if (! pTypeDescr)
 244         {
 245             throw RuntimeException(
 246                 OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
 247                 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 248                 Reference< XInterface >() );
 249         }
 250
 251         pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 252         ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 253
 254         // destruct uno exception
 255         ::uno_any_destruct( pUnoExc, 0 );
 256         // avoiding locked counts
 257         static RTTI * s_rtti = 0;
 258         if (! s_rtti)
 259         {
 260             MutexGuard guard( Mutex::getGlobalMutex() );
 261             if (! s_rtti)
 262             {
 263 #ifdef LEAK_STATIC_DATA
 264                 s_rtti = new RTTI();
 265 #else
 266                 static RTTI rtti_data;
 267                 s_rtti = &rtti_data;
 268 #endif
 269             }
 270         }
 271         rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 272         TYPELIB_DANGER_RELEASE( pTypeDescr );
 273         OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 274         if (! rtti)
 275         {
 276             throw RuntimeException(
 277                 OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
 278                 *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 279                 Reference< XInterface >() );
 280         }
 281         }
 282
 283
 284     __cxa_throw( pCppExc, rtti, deleteException );
 285     }
 286
 287 #ifdef __ARM_EABI__
 288     static void* getAdjustedPtr(__cxa_exception* header)
 289     {
 290         return (void*)header->unwindHeader.barrier_cache.bitpattern[0];
 291     }
 292 #else
 293     static void* getAdjustedPtr(__cxa_exception* header)
 294     {
 295         return header->adjustedPtr;
 296     }
 297 #endif
 298
 299     //===================================================================
 300     void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
 301     {
 302         if (! header)
 303         {
 304             RuntimeException aRE(
 305                 OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
 306                 Reference< XInterface >() );
 307             Type const & rType = ::getCppuType( &aRE );
 308             uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 309 #if OSL_DEBUG_LEVEL > 0
 310             OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 311             OSL_ENSURE( 0, cstr.getStr() );
 312 #endif
 313             return;
 314         }
 315
 316         typelib_TypeDescription * pExcTypeDescr = 0;
 317         OUString unoName( toUNOname( header->exceptionType->name() ) );
 318 #if OSL_DEBUG_LEVEL > 1
 319         OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
 320         fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
 321 #endif
 322         typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 323         if (0 == pExcTypeDescr)
 324         {
 325             RuntimeException aRE(
 326                 OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
 327                 Reference< XInterface >() );
 328             Type const & rType = ::getCppuType( &aRE );
 329             uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 330 #if OSL_DEBUG_LEVEL > 0
 331             OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 332             OSL_ENSURE( 0, cstr.getStr() );
 333 #endif
 334         }
 335         else
 336         {
 337             // construct uno exception any
 338             uno_any_constructAndConvert( pUnoExc, getAdjustedPtr(header), pExcTypeDescr, pCpp2Uno );
 339             typelib_typedescription_release( pExcTypeDescr );
 340         }
 341     }
 342 }
 343
 344 /* vi:set tabstop=4 shiftwidth=4 expandtab: */