bridges/source/cpp_uno/gcc3_linux_x86-64/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 <string.h>
  36 #include <dlfcn.h>
  37 #include <cxxabi.h>
  38 #include <hash_map>
  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     : m_hApp( dlopen( 0, RTLD_LAZY ) )
 125 {
 126 }
 127 //__________________________________________________________________________________________________
 128 RTTI::~RTTI() SAL_THROW( () )
 129 {
 130     dlclose( m_hApp );
 131 }
 132
 133 //__________________________________________________________________________________________________
 134 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
 135 {
 136     type_info * rtti;
 137
 138     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
 139
 140     MutexGuard guard( m_mutex );
 141     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
 142     if (iFind == m_rttis.end())
 143     {
 144         // RTTI symbol
 145         OStringBuffer buf( 64 );
 146         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
 147         sal_Int32 index = 0;
 148         do
 149         {
 150             OUString token( unoName.getToken( 0, '.', index ) );
 151             buf.append( token.getLength() );
 152             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
 153             buf.append( c_token );
 154         }
 155         while (index >= 0);
 156         buf.append( 'E' );
 157
 158         OString symName( buf.makeStringAndClear() );
 159         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
 160
 161         if (rtti)
 162         {
 163             pair< t_rtti_map::iterator, bool > insertion(
 164                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 165             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
 166         }
 167         else
 168         {
 169             // try to lookup the symbol in the generated rtti map
 170             t_rtti_map::const_iterator iFind2( m_generatedRttis.find( unoName ) );
 171             if (iFind2 == m_generatedRttis.end())
 172             {
 173                 // we must generate it !
 174                 // symbol and rtti-name is nearly identical,
 175                 // the symbol is prefixed with _ZTI
 176                 char const * rttiName = symName.getStr() +4;
 177 #if OSL_DEBUG_LEVEL > 1
 178                 fprintf( stderr,"generated rtti for %s\n", rttiName );
 179 #endif
 180                 if (pTypeDescr->pBaseTypeDescription)
 181                 {
 182                     // ensure availability of base
 183                     type_info * base_rtti = getRTTI(
 184                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
 185                     rtti = new __si_class_type_info(
 186                         strdup( rttiName ), (__class_type_info *)base_rtti );
 187                 }
 188                 else
 189                 {
 190                     // this class has no base class
 191                     rtti = new __class_type_info( strdup( rttiName ) );
 192                 }
 193
 194                 pair< t_rtti_map::iterator, bool > insertion(
 195                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 196                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
 197             }
 198             else // taking already generated rtti
 199             {
 200                 rtti = iFind2->second;
 201             }
 202         }
 203     }
 204     else
 205     {
 206         rtti = iFind->second;
 207     }
 208
 209     return rtti;
 210 }
 211
 212 //--------------------------------------------------------------------------------------------------
 213 static void deleteException( void * pExc )
 214 {
 215     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
 216     typelib_TypeDescription * pTD = 0;
 217     OUString unoName( toUNOname( header->exceptionType->name() ) );
 218     ::typelib_typedescription_getByName( &pTD, unoName.pData );
 219     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
 220     if (pTD)
 221     {
 222         ::uno_destructData( pExc, pTD, cpp_release );
 223         ::typelib_typedescription_release( pTD );
 224     }
 225 }
 226
 227 //==================================================================================================
 228 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 229 {
 230 #if OSL_DEBUG_LEVEL > 1
 231     OString cstr(
 232         OUStringToOString(
 233             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 234             RTL_TEXTENCODING_ASCII_US ) );
 235     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
 236 #endif
 237     void * pCppExc;
 238     type_info * rtti;
 239
 240     {
 241     // construct cpp exception object
 242     typelib_TypeDescription * pTypeDescr = 0;
 243     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 244     OSL_ASSERT( pTypeDescr );
 245     if (! pTypeDescr)
 246     {
 247         throw RuntimeException(
 248             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
 249             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 250             Reference< XInterface >() );
 251     }
 252
 253     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 254     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 255
 256     // destruct uno exception
 257     ::uno_any_destruct( pUnoExc, 0 );
 258     // avoiding locked counts
 259     static RTTI * s_rtti = 0;
 260     if (! s_rtti)
 261     {
 262         MutexGuard guard( Mutex::getGlobalMutex() );
 263         if (! s_rtti)
 264         {
 265 #ifdef LEAK_STATIC_DATA
 266             s_rtti = new RTTI();
 267 #else
 268             static RTTI rtti_data;
 269             s_rtti = &rtti_data;
 270 #endif
 271         }
 272     }
 273     rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 274     TYPELIB_DANGER_RELEASE( pTypeDescr );
 275     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 276     if (! rtti)
 277     {
 278         throw RuntimeException(
 279             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
 280             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 281             Reference< XInterface >() );
 282     }
 283     }
 284
 285     __cxa_throw( pCppExc, rtti, deleteException );
 286 }
 287
 288 //==================================================================================================
 289 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
 290 {
 291     if (! header)
 292     {
 293         RuntimeException aRE(
 294             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
 295             Reference< XInterface >() );
 296         Type const & rType = ::getCppuType( &aRE );
 297         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 298 #if OSL_DEBUG_LEVEL > 0
 299         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 300         OSL_ENSURE( 0, cstr.getStr() );
 301 #endif
 302         return;
 303     }
 304
 305     typelib_TypeDescription * pExcTypeDescr = 0;
 306     OUString unoName( toUNOname( header->exceptionType->name() ) );
 307 #if OSL_DEBUG_LEVEL > 1
 308     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
 309     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
 310 #endif
 311     typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 312     if (0 == pExcTypeDescr)
 313     {
 314         RuntimeException aRE(
 315             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
 316             Reference< XInterface >() );
 317         Type const & rType = ::getCppuType( &aRE );
 318         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 319 #if OSL_DEBUG_LEVEL > 0
 320         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 321         OSL_ENSURE( 0, cstr.getStr() );
 322 #endif
 323     }
 324     else
 325     {
 326         // construct uno exception any
 327         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 328         typelib_typedescription_release( pExcTypeDescr );
 329     }
 330 }
 331
 332 }
 333