bridges/source/cpp_uno/gcc3_netbsd_intel/except.cxx

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  21  * GNU Lesser General Public License version 3 for more details
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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
  39 #include <rtl/strbuf.hxx>
  40 #include <rtl/ustrbuf.hxx>
  41 #include <osl/diagnose.h>
  42 #include <osl/mutex.hxx>
  43
  44 #include <bridges/cpp_uno/bridge.hxx>
  45 #include <typelib/typedescription.hxx>
  46 #include <uno/any2.h>
  47
  48 #include "share.hxx"
  49
  50 #ifndef RTLD_DEFAULT
  51 #define RTLD_DEFAULT    ((void *) -2)
  52 #endif
  53
  54 using namespace ::std;
  55 using namespace ::osl;
  56 using namespace ::rtl;
  57 using namespace ::com::sun::star::uno;
  58 using namespace ::__cxxabiv1;
  59
  60
  61 namespace CPPU_CURRENT_NAMESPACE
  62 {
  63
  64 void dummy_can_throw_anything( char const * )
  65 {
  66 }
  67
  68 //==================================================================================================
  69 static OUString toUNOname( char const * p ) SAL_THROW( () )
  70 {
  71 #if OSL_DEBUG_LEVEL > 1
  72     char const * start = p;
  73 #endif
  74
  75     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
  76
  77     OUStringBuffer buf( 64 );
  78     OSL_ASSERT( 'N' == *p );
  79     ++p; // skip N
  80
  81     while ('E' != *p)
  82     {
  83         // read chars count
  84         long n = (*p++ - '0');
  85         while ('0' <= *p && '9' >= *p)
  86         {
  87             n *= 10;
  88             n += (*p++ - '0');
  89         }
  90         buf.appendAscii( p, n );
  91         p += n;
  92         if ('E' != *p)
  93             buf.append( (sal_Unicode)'.' );
  94     }
  95
  96 #if OSL_DEBUG_LEVEL > 1
  97     OUString ret( buf.makeStringAndClear() );
  98     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
  99     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
 100     return ret;
 101 #else
 102     return buf.makeStringAndClear();
 103 #endif
 104 }
 105
 106 //==================================================================================================
 107 class RTTI
 108 {
 109     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
 110
 111     Mutex m_mutex;
 112     t_rtti_map m_rttis;
 113     t_rtti_map m_generatedRttis;
 114
 115     void * m_hApp;
 116
 117 public:
 118     RTTI() SAL_THROW( () );
 119     ~RTTI() SAL_THROW( () );
 120
 121     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
 122 };
 123 //__________________________________________________________________________________________________
 124 RTTI::RTTI() SAL_THROW( () )
 125     : m_hApp( dlopen( 0 , RTLD_LAZY ) )
 126 {
 127 }
 128 //__________________________________________________________________________________________________
 129 RTTI::~RTTI() SAL_THROW( () )
 130 {
 131     dlclose( m_hApp );
 132 }
 133
 134 //__________________________________________________________________________________________________
 135 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
 136 {
 137     type_info * rtti;
 138
 139     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
 140
 141     MutexGuard guard( m_mutex );
 142     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
 143     if (iFind == m_rttis.end())
 144     {
 145         // RTTI symbol
 146         OStringBuffer buf( 64 );
 147         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
 148         sal_Int32 index = 0;
 149         do
 150         {
 151             OUString token( unoName.getToken( 0, '.', index ) );
 152             buf.append( token.getLength() );
 153             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
 154             buf.append( c_token );
 155         }
 156         while (index >= 0);
 157         buf.append( 'E' );
 158
 159         OString symName( buf.makeStringAndClear() );
 160         rtti = (type_info *)dlsym( RTLD_DEFAULT, symName.getStr() );
 161
 162         if (rtti)
 163         {
 164             pair< t_rtti_map::iterator, bool > insertion(
 165                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 166             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
 167         }
 168         else
 169         {
 170             // try to lookup the symbol in the generated rtti map
 171             t_rtti_map::const_iterator iFind( m_generatedRttis.find( unoName ) );
 172             if (iFind == m_generatedRttis.end())
 173             {
 174                 // we must generate it !
 175                 // symbol and rtti-name is nearly identical,
 176                 // the symbol is prefixed with _ZTI
 177                 char const * rttiName = symName.getStr() +4;
 178 #if OSL_DEBUG_LEVEL > 1
 179                 fprintf( stderr,"generated rtti for %s\n", rttiName );
 180 #endif
 181                 if (pTypeDescr->pBaseTypeDescription)
 182                 {
 183                     // ensure availability of base
 184                     type_info * base_rtti = getRTTI(
 185                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
 186                     rtti = new __si_class_type_info(
 187                         strdup( rttiName ), (__class_type_info *)base_rtti );
 188                 }
 189                 else
 190                 {
 191                     // this class has no base class
 192                     rtti = new __class_type_info( strdup( rttiName ) );
 193                 }
 194
 195                 pair< t_rtti_map::iterator, bool > insertion(
 196                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 197                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
 198             }
 199             else // taking already generated rtti
 200             {
 201                 rtti = iFind->second;
 202             }
 203         }
 204     }
 205     else
 206     {
 207         rtti = iFind->second;
 208     }
 209
 210     return rtti;
 211 }
 212
 213 //--------------------------------------------------------------------------------------------------
 214 static void deleteException( void * pExc )
 215 {
 216     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
 217     typelib_TypeDescription * pTD = 0;
 218     OUString unoName( toUNOname( header->exceptionType->name() ) );
 219     ::typelib_typedescription_getByName( &pTD, unoName.pData );
 220     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
 221     if (pTD)
 222     {
 223         ::uno_destructData( pExc, pTD, cpp_release );
 224         ::typelib_typedescription_release( pTD );
 225     }
 226 }
 227
 228 //==================================================================================================
 229 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 230 {
 231 #if defined DEBUG
 232     OString cstr(
 233         OUStringToOString(
 234             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 235             RTL_TEXTENCODING_ASCII_US ) );
 236     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
 237 #endif
 238     void * pCppExc;
 239     type_info * rtti;
 240
 241     {
 242     // construct cpp exception object
 243     typelib_TypeDescription * pTypeDescr = 0;
 244     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 245     OSL_ASSERT( pTypeDescr );
 246     if (! pTypeDescr)
 247     {
 248         throw RuntimeException(
 249             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
 250             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 251             Reference< XInterface >() );
 252     }
 253
 254     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 255     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 256
 257     // destruct uno exception
 258     ::uno_any_destruct( pUnoExc, 0 );
 259     // avoiding locked counts
 260     static RTTI * s_rtti = 0;
 261     if (! s_rtti)
 262     {
 263         MutexGuard guard( Mutex::getGlobalMutex() );
 264         if (! s_rtti)
 265         {
 266 #ifdef LEAK_STATIC_DATA
 267             s_rtti = new RTTI();
 268 #else
 269             static RTTI rtti_data;
 270             s_rtti = &rtti_data;
 271 #endif
 272         }
 273     }
 274     rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 275     TYPELIB_DANGER_RELEASE( pTypeDescr );
 276     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 277     if (! rtti)
 278     {
 279         throw RuntimeException(
 280             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
 281             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 282             Reference< XInterface >() );
 283     }
 284     }
 285
 286     __cxa_throw( pCppExc, rtti, deleteException );
 287 }
 288
 289 //==================================================================================================
 290 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
 291 {
 292     if (! header)
 293     {
 294         RuntimeException aRE(
 295             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
 296             Reference< XInterface >() );
 297         Type const & rType = ::getCppuType( &aRE );
 298         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 299 #if defined _DEBUG
 300         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 301         OSL_ENSURE( 0, cstr.getStr() );
 302 #endif
 303         return;
 304     }
 305
 306     typelib_TypeDescription * pExcTypeDescr = 0;
 307     OUString unoName( toUNOname( header->exceptionType->name() ) );
 308 #if defined DEBUG
 309     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
 310     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
 311 #endif
 312     typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 313     if (0 == pExcTypeDescr)
 314     {
 315         RuntimeException aRE(
 316             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
 317             Reference< XInterface >() );
 318         Type const & rType = ::getCppuType( &aRE );
 319         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 320 #if defined _DEBUG
 321         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 322         OSL_ENSURE( 0, cstr.getStr() );
 323 #endif
 324     }
 325     else
 326     {
 327         // construct uno exception any
 328         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 329         typelib_typedescription_release( pExcTypeDescr );
 330     }
 331 }
 332
 333 }
 334