bridges/source/cpp_uno/gcc3_macosx_powerpc/except.cxx

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  28
  29
  30 #include <stdio.h>
  31 #include <dlfcn.h>
  32 #include <cxxabi.h>
  33 #include <boost/unordered_map.hpp>
  34
  35 #include <rtl/instance.hxx>
  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 <typelib/typedescription.hxx>
  43 #include <uno/any2.h>
  44
  45 #include "share.hxx"
  46
  47
  48 using namespace ::std;
  49 using namespace ::osl;
  50 using namespace ::rtl;
  51 using namespace ::com::sun::star::uno;
  52 using namespace ::__cxxabiv1;
  53
  54
  55 namespace CPPU_CURRENT_NAMESPACE
  56 {
  57
  58 void dummy_can_throw_anything( char const * )
  59 {
  60 }
  61
  62 //==================================================================================================
  63 static OUString toUNOname( char const * p ) SAL_THROW(())
  64 {
  65 #ifdef DEBUG
  66     char const * start = p;
  67 #endif
  68
  69     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
  70
  71     OUStringBuffer buf( 64 );
  72     OSL_ASSERT( 'N' == *p );
  73     ++p; // skip N
  74
  75     while ('E' != *p)
  76     {
  77         // read chars count
  78         long n = (*p++ - '0');
  79         while ('0' <= *p && '9' >= *p)
  80         {
  81             n *= 10;
  82             n += (*p++ - '0');
  83         }
  84         buf.appendAscii( p, n );
  85         p += n;
  86         if ('E' != *p)
  87             buf.append( (sal_Unicode)'.' );
  88     }
  89
  90 #ifdef DEBUG
  91     OUString ret( buf.makeStringAndClear() );
  92     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
  93     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
  94     return ret;
  95 #else
  96     return buf.makeStringAndClear();
  97 #endif
  98 }
  99
 100 //==================================================================================================
 101 class RTTI
 102 {
 103     typedef boost::unordered_map< OUString, type_info *, OUStringHash > t_rtti_map;
 104
 105     Mutex m_mutex;
 106     t_rtti_map m_rttis;
 107     t_rtti_map m_generatedRttis;
 108
 109     void * m_hApp;
 110
 111 public:
 112     RTTI() SAL_THROW(());
 113     ~RTTI() SAL_THROW(());
 114
 115     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW(());
 116 };
 117 //__________________________________________________________________________________________________
 118 RTTI::RTTI() SAL_THROW(())
 119     : m_hApp( dlopen( 0, RTLD_LAZY ) )
 120 {
 121 }
 122 //__________________________________________________________________________________________________
 123 RTTI::~RTTI() SAL_THROW(())
 124 {
 125     dlclose( m_hApp );
 126 }
 127
 128 //__________________________________________________________________________________________________
 129 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW(())
 130 {
 131     type_info * rtti;
 132
 133     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
 134
 135     MutexGuard guard( m_mutex );
 136     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
 137     if (iFind == m_rttis.end())
 138     {
 139         // RTTI symbol
 140         OStringBuffer buf( 64 );
 141         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
 142         sal_Int32 index = 0;
 143         do
 144         {
 145             OUString token( unoName.getToken( 0, '.', index ) );
 146             buf.append( token.getLength() );
 147             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
 148             buf.append( c_token );
 149         }
 150         while (index >= 0);
 151         buf.append( 'E' );
 152
 153         OString symName( buf.makeStringAndClear() );
 154         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
 155
 156         if (rtti)
 157         {
 158             pair< t_rtti_map::iterator, bool > insertion(
 159                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 160             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
 161         }
 162         else
 163         {
 164             // try to lookup the symbol in the generated rtti map
 165             t_rtti_map::const_iterator iiFind( m_generatedRttis.find( unoName ) );
 166             if (iiFind == m_generatedRttis.end())
 167             {
 168                 // we must generate it !
 169                 // symbol and rtti-name is nearly identical,
 170                 // the symbol is prefixed with _ZTI
 171                 char const * rttiName = symName.getStr() +4;
 172 #ifdef DEBUG
 173                 fprintf( stderr,"generated rtti for %s\n", rttiName );
 174 #endif
 175                 if (pTypeDescr->pBaseTypeDescription)
 176                 {
 177                     // ensure availability of base
 178                     type_info * base_rtti = getRTTI(
 179                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
 180                     rtti = new __si_class_type_info(
 181                         strdup( rttiName ), (__class_type_info *)base_rtti );
 182                 }
 183                 else
 184                 {
 185                     // this class has no base class
 186                     rtti = new __class_type_info( strdup( rttiName ) );
 187                 }
 188
 189                 pair< t_rtti_map::iterator, bool > insertion(
 190                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 191                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
 192             }
 193             else // taking already generated rtti
 194             {
 195                 rtti = iiFind->second;
 196             }
 197         }
 198     }
 199     else
 200     {
 201         rtti = iFind->second;
 202     }
 203
 204     return rtti;
 205 }
 206
 207 struct RTTISingleton: public rtl::Static< RTTI, RTTISingleton > {};
 208
 209 //--------------------------------------------------------------------------------------------------
 210 static void deleteException( void * pExc )
 211 {
 212     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
 213     typelib_TypeDescription * pTD = 0;
 214     OUString unoName( toUNOname( header->exceptionType->name() ) );
 215     ::typelib_typedescription_getByName( &pTD, unoName.pData );
 216     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
 217     if (pTD)
 218     {
 219         ::uno_destructData( pExc, pTD, cpp_release );
 220         ::typelib_typedescription_release( pTD );
 221     }
 222 }
 223
 224 //==================================================================================================
 225 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 226 {
 227     void * pCppExc;
 228     type_info * rtti;
 229
 230     {
 231     // construct cpp exception object
 232     typelib_TypeDescription * pTypeDescr = 0;
 233     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 234     OSL_ASSERT( pTypeDescr );
 235     if (! pTypeDescr)
 236         terminate();
 237
 238     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 239     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 240
 241     // destruct uno exception
 242     ::uno_any_destruct( pUnoExc, 0 );
 243         rtti = (type_info *)RTTISingleton::get().getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 244     TYPELIB_DANGER_RELEASE( pTypeDescr );
 245     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 246     if (! rtti)
 247         terminate();
 248     }
 249
 250     __cxa_throw( pCppExc, rtti, deleteException );
 251 }
 252
 253 //==================================================================================================
 254 void fillUnoException( __cxa_exception * header, uno_Any * pExc, uno_Mapping * pCpp2Uno )
 255 {
 256     OSL_ENSURE( header, "### no exception header!!!" );
 257     if (! header)
 258         terminate();
 259
 260     typelib_TypeDescription * pExcTypeDescr = 0;
 261     OUString unoName( toUNOname( header->exceptionType->name() ) );
 262     ::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 263     OSL_ENSURE( pExcTypeDescr, "### can not get type description for exception!!!" );
 264     if (! pExcTypeDescr)
 265         terminate();
 266
 267     // construct uno exception any
 268     ::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 269     ::typelib_typedescription_release( pExcTypeDescr );
 270 }
 271
 272 }
 273
 274 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */