bridges/source/cpp_uno/gcc3_macosx_intel/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 <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 <com/sun/star/uno/genfunc.hxx>
  45 #include "com/sun/star/uno/RuntimeException.hpp"
  46 #include <typelib/typedescription.hxx>
  47 #include <uno/any2.h>
  48
  49 #include "share.hxx"
  50
  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 namespace CPPU_CURRENT_NAMESPACE
  60 {
  61
  62 void dummy_can_throw_anything( char const * )
  63 {
  64 }
  65
  66 //==================================================================================================
  67 static OUString toUNOname( char const * p ) SAL_THROW( () )
  68 {
  69 #if OSL_DEBUG_LEVEL > 1
  70     char const * start = p;
  71 #endif
  72
  73     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
  74
  75     OUStringBuffer buf( 64 );
  76     OSL_ASSERT( 'N' == *p );
  77     ++p; // skip N
  78
  79     while ('E' != *p)
  80     {
  81         // read chars count
  82         long n = (*p++ - '0');
  83         while ('0' <= *p && '9' >= *p)
  84         {
  85             n *= 10;
  86             n += (*p++ - '0');
  87         }
  88         buf.appendAscii( p, n );
  89         p += n;
  90         if ('E' != *p)
  91             buf.append( (sal_Unicode)'.' );
  92     }
  93
  94 #if OSL_DEBUG_LEVEL > 1
  95     OUString ret( buf.makeStringAndClear() );
  96     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
  97     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
  98     return ret;
  99 #else
 100     return buf.makeStringAndClear();
 101 #endif
 102 }
 103
 104 //==================================================================================================
 105 class RTTI
 106 {
 107     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
 108
 109     Mutex m_mutex;
 110     t_rtti_map m_rttis;
 111     t_rtti_map m_generatedRttis;
 112
 113     void * m_hApp;
 114
 115 public:
 116     RTTI() SAL_THROW( () );
 117     ~RTTI() SAL_THROW( () );
 118
 119     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
 120 };
 121 //__________________________________________________________________________________________________
 122 RTTI::RTTI() SAL_THROW( () )
 123     : m_hApp( dlopen( 0, RTLD_LAZY ) )
 124 {
 125 }
 126 //__________________________________________________________________________________________________
 127 RTTI::~RTTI() SAL_THROW( () )
 128 {
 129     dlclose( m_hApp );
 130 }
 131
 132 //__________________________________________________________________________________________________
 133 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
 134 {
 135     type_info * rtti;
 136
 137     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
 138
 139     MutexGuard guard( m_mutex );
 140     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
 141     if (iFind == m_rttis.end())
 142     {
 143         // RTTI symbol
 144         OStringBuffer buf( 64 );
 145         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
 146         sal_Int32 index = 0;
 147         do
 148         {
 149             OUString token( unoName.getToken( 0, '.', index ) );
 150             buf.append( token.getLength() );
 151             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
 152             buf.append( c_token );
 153         }
 154         while (index >= 0);
 155         buf.append( 'E' );
 156
 157         OString symName( buf.makeStringAndClear() );
 158         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
 159
 160         if (rtti)
 161         {
 162             pair< t_rtti_map::iterator, bool > insertion(
 163                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 164             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
 165         }
 166         else
 167         {
 168             // try to lookup the symbol in the generated rtti map
 169             t_rtti_map::const_iterator iFind2( m_generatedRttis.find( unoName ) );
 170             if (iFind2 == m_generatedRttis.end())
 171             {
 172                 // we must generate it !
 173                 // symbol and rtti-name is nearly identical,
 174                 // the symbol is prefixed with _ZTI
 175                 char const * rttiName = symName.getStr() +4;
 176 #if OSL_DEBUG_LEVEL > 1
 177                 fprintf( stderr,"generated rtti for %s\n", rttiName );
 178 #endif
 179                 if (pTypeDescr->pBaseTypeDescription)
 180                 {
 181                     // ensure availability of base
 182                     type_info * base_rtti = getRTTI(
 183                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
 184                     rtti = new __si_class_type_info(
 185                         strdup( rttiName ), (__class_type_info *)base_rtti );
 186                 }
 187                 else
 188                 {
 189                     // this class has no base class
 190                     rtti = new __class_type_info( strdup( rttiName ) );
 191                 }
 192
 193                 pair< t_rtti_map::iterator, bool > insertion(
 194                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 195                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
 196             }
 197             else // taking already generated rtti
 198             {
 199                 rtti = iFind2->second;
 200             }
 201         }
 202     }
 203     else
 204     {
 205         rtti = iFind->second;
 206     }
 207
 208     return rtti;
 209 }
 210
 211 //--------------------------------------------------------------------------------------------------
 212 static void deleteException( void * pExc )
 213 {
 214     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
 215     typelib_TypeDescription * pTD = 0;
 216     OUString unoName( toUNOname( header->exceptionType->name() ) );
 217     ::typelib_typedescription_getByName( &pTD, unoName.pData );
 218     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
 219     if (pTD)
 220     {
 221         ::uno_destructData( pExc, pTD, cpp_release );
 222         ::typelib_typedescription_release( pTD );
 223     }
 224 }
 225
 226 //==================================================================================================
 227 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 228 {
 229 #if OSL_DEBUG_LEVEL > 1
 230     OString cstr(
 231         OUStringToOString(
 232             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 233             RTL_TEXTENCODING_ASCII_US ) );
 234     fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
 235 #endif
 236     void * pCppExc;
 237     type_info * rtti;
 238
 239     {
 240     // construct cpp exception object
 241     typelib_TypeDescription * pTypeDescr = 0;
 242     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 243     OSL_ASSERT( pTypeDescr );
 244     if (! pTypeDescr)
 245     {
 246         throw RuntimeException(
 247             OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
 248             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 249             Reference< XInterface >() );
 250     }
 251
 252     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 253     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 254
 255     // destruct uno exception
 256     ::uno_any_destruct( pUnoExc, 0 );
 257     // avoiding locked counts
 258     static RTTI * s_rtti = 0;
 259     if (! s_rtti)
 260     {
 261         MutexGuard guard( Mutex::getGlobalMutex() );
 262         if (! s_rtti)
 263         {
 264 #ifdef LEAK_STATIC_DATA
 265             s_rtti = new RTTI();
 266 #else
 267             static RTTI rtti_data;
 268             s_rtti = &rtti_data;
 269 #endif
 270         }
 271     }
 272     rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 273     TYPELIB_DANGER_RELEASE( pTypeDescr );
 274     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 275     if (! rtti)
 276     {
 277         throw RuntimeException(
 278             OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
 279             *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
 280             Reference< XInterface >() );
 281     }
 282     }
 283
 284     __cxa_throw( pCppExc, rtti, deleteException );
 285 }
 286
 287 //==================================================================================================
 288 void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
 289 {
 290     if (! header)
 291     {
 292         RuntimeException aRE(
 293             OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
 294             Reference< XInterface >() );
 295         Type const & rType = ::getCppuType( &aRE );
 296         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 297 #if OSL_DEBUG_LEVEL > 0
 298         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 299         OSL_ENSURE( 0, cstr.getStr() );
 300 #endif
 301         return;
 302     }
 303
 304     typelib_TypeDescription * pExcTypeDescr = 0;
 305     OUString unoName( toUNOname( header->exceptionType->name() ) );
 306 #if OSL_DEBUG_LEVEL > 1
 307     OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
 308     fprintf( stderr, "> c++ exception occured: %s\n", cstr_unoName.getStr() );
 309 #endif
 310     typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 311     if (0 == pExcTypeDescr)
 312     {
 313         RuntimeException aRE(
 314             OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
 315             Reference< XInterface >() );
 316         Type const & rType = ::getCppuType( &aRE );
 317         uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
 318 #if OSL_DEBUG_LEVEL > 0
 319         OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
 320         OSL_ENSURE( 0, cstr.getStr() );
 321 #endif
 322     }
 323     else
 324     {
 325         // construct uno exception any
 326         uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 327         typelib_typedescription_release( pExcTypeDescr );
 328     }
 329 }
 330
 331 }
 332