bridges/source/cpp_uno/gcc3_os2_intel/except.cxx

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  30
  31 #include <stdio.h>
  32 #include <dlfcn.h>
  33 #include <cxxabi.h>
  34 #include <hash_map>
  35
  36 #include <rtl/strbuf.hxx>
  37 #include <rtl/ustrbuf.hxx>
  38 #include <osl/diagnose.h>
  39 #include <osl/mutex.hxx>
  40
  41 #include <com/sun/star/uno/genfunc.hxx>
  42 #include "com/sun/star/uno/RuntimeException.hpp"
  43 #include <typelib/typedescription.hxx>
  44 #include <uno/any2.h>
  45
  46 #include "share.hxx"
  47
  48 #ifdef TEST
  49 #include "test/TestBridgeException.hpp"
  50 #endif
  51
  52 using namespace ::std;
  53 using namespace ::osl;
  54 using namespace ::rtl;
  55 using namespace ::com::sun::star::uno;
  56 using namespace ::__cxxabiv1;
  57
  58 //==================================================================================================
  59 //YD static handle to this dll, to allow rtti symbol lookup
  60 static  void*   hmod;
  61
  62 //==================================================================================================
  63 //YD required to run test programs, because exe cannot export symbols!
  64 #ifdef TEST
  65 using namespace ::test;
  66
  67 void dymmy_TestBridgeException() throw( ::test::TestBridgeException)
  68 {
  69    throw TestBridgeException();
  70 }
  71 #endif
  72
  73 //==================================================================================================
  74 namespace CPPU_CURRENT_NAMESPACE
  75 {
  76
  77 void dummy_can_throw_anything( char const * )
  78 {
  79 }
  80
  81 //==================================================================================================
  82 static OUString toUNOname( char const * p ) SAL_THROW( () )
  83 {
  84 #if OSL_DEBUG_LEVEL > 1
  85     char const * start = p;
  86 #endif
  87
  88     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
  89
  90     OUStringBuffer buf( 64 );
  91     OSL_ASSERT( 'N' == *p );
  92     ++p; // skip N
  93
  94     while ('E' != *p)
  95     {
  96         // read chars count
  97         long n = (*p++ - '0');
  98         while ('0' <= *p && '9' >= *p)
  99         {
 100             n *= 10;
 101             n += (*p++ - '0');
 102         }
 103         buf.appendAscii( p, n );
 104         p += n;
 105         if ('E' != *p)
 106             buf.append( (sal_Unicode)'.' );
 107     }
 108
 109 #if OSL_DEBUG_LEVEL > 1
 110     OUString ret( buf.makeStringAndClear() );
 111     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
 112     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
 113     return ret;
 114 #else
 115     return buf.makeStringAndClear();
 116 #endif
 117 }
 118
 119 //==================================================================================================
 120 class RTTI
 121 {
 122     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
 123
 124     Mutex m_mutex;
 125     t_rtti_map m_rttis;
 126     t_rtti_map m_generatedRttis;
 127
 128     //void * m_hApp;
 129
 130 public:
 131     RTTI() SAL_THROW( () );
 132     ~RTTI() SAL_THROW( () );
 133
 134     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
 135 };
 136 //__________________________________________________________________________________________________
 137 RTTI::RTTI() SAL_THROW( () )
 138 //    : m_hApp( dlopen( 0, RTLD_LAZY ) )
 139 {
 140 }
 141 //__________________________________________________________________________________________________
 142 RTTI::~RTTI() SAL_THROW( () )
 143 {
 144 //    dlclose( m_hApp );
 145 }
 146
 147 //__________________________________________________________________________________________________
 148 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
 149 {
 150     type_info * rtti;
 151
 152     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
 153
 154     MutexGuard guard( m_mutex );
 155     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
 156     if (iFind == m_rttis.end())
 157     {
 158         // RTTI symbol
 159         OStringBuffer buf( 64 );
 160         buf.append( RTL_CONSTASCII_STRINGPARAM("__ZTIN") );
 161         sal_Int32 index = 0;
 162         do
 163         {
 164             OUString token( unoName.getToken( 0, '.', index ) );
 165             buf.append( token.getLength() );
 166             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
 167             buf.append( c_token );
 168         }
 169         while (index >= 0);
 170         buf.append( 'E' );
 171
 172         OString symName( buf.makeStringAndClear() );
 173         //rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
 174     if (hmod == NULL)
 175         hmod = dlopen( "gcc3_uno.dll", 0);
 176
 177     if (hmod)
 178             rtti = (type_info *)dlsym( hmod, symName.getStr() );
 179
 180         if (rtti)
 181         {
 182             pair< t_rtti_map::iterator, bool > insertion(
 183                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 184             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
 185         }
 186         else
 187         {
 188             // try to lookup the symbol in the generated rtti map
 189             t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
 190             if (iFind == m_generatedRttis.end())
 191             {
 192                 // we must generate it !
 193                 // symbol and rtti-name is nearly identical,
 194                 // the symbol is prefixed with __ZTI
 195                 char const * rttiName = symName.getStr() +5;
 196 #if OSL_DEBUG_LEVEL > 1
 197                 fprintf( stderr,"generated rtti for %s\n", rttiName );
 198 #endif
 199                 if (pTypeDescr->pBaseTypeDescription)
 200                 {
 201                     // ensure availability of base
 202                     type_info * base_rtti = getRTTI(
 203                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
 204                     rtti = new __si_class_type_info(
 205                         strdup( rttiName ), (__class_type_info *)base_rtti );
 206                 }
 207                 else
 208                 {
 209                     // this class has no base class
 210                     rtti = new __class_type_info( strdup( rttiName ) );
 211                 }
 212
 213                 pair< t_rtti_map::iterator, bool > insertion(
 214                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 215                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
 216             }
 217             else // taking already generated rtti
 218             {
 219                 rtti = iFind->second;
 220             }
 221         }
 222     }
 223     else
 224     {
 225         rtti = iFind->second;
 226     }
 227
 228     return rtti;
 229 }
 230
 231 //--------------------------------------------------------------------------------------------------
 232 static void deleteException( void * pExc )
 233 {
 234     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
 235     typelib_TypeDescription * pTD = 0;
 236     OUString unoName( toUNOname( header->exceptionType->name() ) );
 237     ::typelib_typedescription_getByName( &pTD, unoName.pData );
 238     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
 239     if (pTD)
 240     {
 241         ::uno_destructData( pExc, pTD, cpp_release );
 242         ::typelib_typedescription_release( pTD );
 243     }
 244 }
 245
 246 //==================================================================================================
 247 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 248 {
 249 #if OSL_DEBUG_LEVEL > 1
 250     OString cstr(
 251         OUStringToOString(
 252             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 253             RTL_TEXTENCODING_ASCII_US ) );
 254     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
 255 #endif
 256     void * pCppExc;
 257     type_info * rtti;
 258
 259     {
 260     // construct cpp exception object
 261     typelib_TypeDescription * pTypeDescr = 0;
 262     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 263     OSL_ASSERT( pTypeDescr );
 264     if (! pTypeDescr)
 265     {
 266         throw RuntimeException(
 267             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
 268             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 269             Reference< XInterface >() );
 270     }
 271
 272     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 273     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 274
 275     // destruct uno exception
 276     ::uno_any_destruct( pUnoExc, 0 );
 277     // avoiding locked counts
 278     static RTTI * s_rtti = 0;
 279     if (! s_rtti)
 280     {
 281         MutexGuard guard( Mutex::getGlobalMutex() );
 282         if (! s_rtti)
 283         {
 284 #ifdef LEAK_STATIC_DATA
 285             s_rtti = new RTTI();
 286 #else
 287             static RTTI rtti_data;
 288             s_rtti = &rtti_data;
 289 #endif
 290         }
 291     }
 292     rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 293     TYPELIB_DANGER_RELEASE( pTypeDescr );
 294     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 295     if (! rtti)
 296     {
 297         throw RuntimeException(
 298             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
 299             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 300             Reference< XInterface >() );
 301     }
 302     }
 303
 304     __cxa_throw( pCppExc, rtti, deleteException );
 305 }
 306
 307 //==================================================================================================
 308 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
 309 {
 310     if (! header)
 311     {
 312         RuntimeException aRE(
 313             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
 314             Reference< XInterface >() );
 315         Type const & rType = ::getCppuType( &aRE );
 316         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 317 #if OSL_DEBUG_LEVEL > 0
 318         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 319         OSL_ENSURE( 0, cstr.getStr() );
 320 #endif
 321         return;
 322     }
 323
 324     typelib_TypeDescription * pExcTypeDescr = 0;
 325     OUString unoName( toUNOname( header->exceptionType->name() ) );
 326 #if OSL_DEBUG_LEVEL > 1
 327     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
 328     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
 329 #endif
 330     typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 331     if (0 == pExcTypeDescr)
 332     {
 333         RuntimeException aRE(
 334             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
 335             Reference< XInterface >() );
 336         Type const & rType = ::getCppuType( &aRE );
 337         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 338 #if OSL_DEBUG_LEVEL > 0
 339         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 340         OSL_ENSURE( 0, cstr.getStr() );
 341 #endif
 342     }
 343     else
 344     {
 345         // construct uno exception any
 346         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 347         typelib_typedescription_release( pExcTypeDescr );
 348     }
 349 }
 350
 351 }
 352