bridges/source/cpp_uno/gcc3_macosx_powerpc/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 <typelib/typedescription.hxx>
  46 #include <uno/any2.h>
  47
  48 #include "share.hxx"
  49
  50
  51 using namespace ::std;
  52 using namespace ::osl;
  53 using namespace ::rtl;
  54 using namespace ::com::sun::star::uno;
  55 using namespace ::__cxxabiv1;
  56
  57
  58 namespace CPPU_CURRENT_NAMESPACE
  59 {
  60
  61 void dummy_can_throw_anything( char const * )
  62 {
  63 }
  64
  65 //==================================================================================================
  66 static OUString toUNOname( char const * p ) SAL_THROW( () )
  67 {
  68 #ifdef DEBUG
  69     char const * start = p;
  70 #endif
  71
  72     // example: N3com3sun4star4lang24IllegalArgumentExceptionE
  73
  74     OUStringBuffer buf( 64 );
  75     OSL_ASSERT( 'N' == *p );
  76     ++p; // skip N
  77
  78     while ('E' != *p)
  79     {
  80         // read chars count
  81         long n = (*p++ - '0');
  82         while ('0' <= *p && '9' >= *p)
  83         {
  84             n *= 10;
  85             n += (*p++ - '0');
  86         }
  87         buf.appendAscii( p, n );
  88         p += n;
  89         if ('E' != *p)
  90             buf.append( (sal_Unicode)'.' );
  91     }
  92
  93 #ifdef DEBUG
  94     OUString ret( buf.makeStringAndClear() );
  95     OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
  96     fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
  97     return ret;
  98 #else
  99     return buf.makeStringAndClear();
 100 #endif
 101 }
 102
 103 //==================================================================================================
 104 class RTTI
 105 {
 106     typedef hash_map< OUString, type_info *, OUStringHash > t_rtti_map;
 107
 108     Mutex m_mutex;
 109     t_rtti_map m_rttis;
 110     t_rtti_map m_generatedRttis;
 111
 112     void * m_hApp;
 113
 114 public:
 115     RTTI() SAL_THROW( () );
 116     ~RTTI() SAL_THROW( () );
 117
 118     type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW( () );
 119 };
 120 //__________________________________________________________________________________________________
 121 RTTI::RTTI() SAL_THROW( () )
 122     : m_hApp( dlopen( 0, RTLD_LAZY ) )
 123 {
 124 }
 125 //__________________________________________________________________________________________________
 126 RTTI::~RTTI() SAL_THROW( () )
 127 {
 128     dlclose( m_hApp );
 129 }
 130
 131 //__________________________________________________________________________________________________
 132 type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW( () )
 133 {
 134     type_info * rtti;
 135
 136     OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;
 137
 138     MutexGuard guard( m_mutex );
 139     t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
 140     if (iFind == m_rttis.end())
 141     {
 142         // RTTI symbol
 143         OStringBuffer buf( 64 );
 144         buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
 145         sal_Int32 index = 0;
 146         do
 147         {
 148             OUString token( unoName.getToken( 0, '.', index ) );
 149             buf.append( token.getLength() );
 150             OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
 151             buf.append( c_token );
 152         }
 153         while (index >= 0);
 154         buf.append( 'E' );
 155
 156         OString symName( buf.makeStringAndClear() );
 157         rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
 158
 159         if (rtti)
 160         {
 161             pair< t_rtti_map::iterator, bool > insertion(
 162                 m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 163             OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
 164         }
 165         else
 166         {
 167             // try to lookup the symbol in the generated rtti map
 168             t_rtti_map::const_iterator iiFind( m_generatedRttis.find( unoName ) );
 169             if (iiFind == m_generatedRttis.end())
 170             {
 171                 // we must generate it !
 172                 // symbol and rtti-name is nearly identical,
 173                 // the symbol is prefixed with _ZTI
 174                 char const * rttiName = symName.getStr() +4;
 175 #ifdef DEBUG
 176                 fprintf( stderr,"generated rtti for %s\n", rttiName );
 177 #endif
 178                 if (pTypeDescr->pBaseTypeDescription)
 179                 {
 180                     // ensure availability of base
 181                     type_info * base_rtti = getRTTI(
 182                         (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
 183                     rtti = new __si_class_type_info(
 184                         strdup( rttiName ), (__class_type_info *)base_rtti );
 185                 }
 186                 else
 187                 {
 188                     // this class has no base class
 189                     rtti = new __class_type_info( strdup( rttiName ) );
 190                 }
 191
 192                 pair< t_rtti_map::iterator, bool > insertion(
 193                     m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
 194                 OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
 195             }
 196             else // taking already generated rtti
 197             {
 198                 rtti = iiFind->second;
 199             }
 200         }
 201     }
 202     else
 203     {
 204         rtti = iFind->second;
 205     }
 206
 207     return rtti;
 208 }
 209
 210 //--------------------------------------------------------------------------------------------------
 211 static void deleteException( void * pExc )
 212 {
 213     __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
 214     typelib_TypeDescription * pTD = 0;
 215     OUString unoName( toUNOname( header->exceptionType->name() ) );
 216     ::typelib_typedescription_getByName( &pTD, unoName.pData );
 217     OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
 218     if (pTD)
 219     {
 220         ::uno_destructData( pExc, pTD, cpp_release );
 221         ::typelib_typedescription_release( pTD );
 222     }
 223 }
 224
 225 //==================================================================================================
 226 void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
 227 {
 228     void * pCppExc;
 229     type_info * rtti;
 230
 231     {
 232     // construct cpp exception object
 233     typelib_TypeDescription * pTypeDescr = 0;
 234     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 235     OSL_ASSERT( pTypeDescr );
 236     if (! pTypeDescr)
 237         terminate();
 238
 239     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 240     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 241
 242     // destruct uno exception
 243     ::uno_any_destruct( pUnoExc, 0 );
 244     // avoiding locked counts
 245     static RTTI * s_rtti = 0;
 246     if (! s_rtti)
 247     {
 248         MutexGuard guard( Mutex::getGlobalMutex() );
 249         if (! s_rtti)
 250         {
 251 #ifdef LEAK_STATIC_DATA
 252             s_rtti = new RTTI();
 253 #else
 254             static RTTI rtti_data;
 255             s_rtti = &rtti_data;
 256 #endif
 257         }
 258     }
 259     rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 260     TYPELIB_DANGER_RELEASE( pTypeDescr );
 261     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 262     if (! rtti)
 263         terminate();
 264     }
 265
 266     __cxa_throw( pCppExc, rtti, deleteException );
 267 }
 268
 269 //==================================================================================================
 270 void fillUnoException( __cxa_exception * header, uno_Any * pExc, uno_Mapping * pCpp2Uno )
 271 {
 272     OSL_ENSURE( header, "### no exception header!!!" );
 273     if (! header)
 274         terminate();
 275
 276     typelib_TypeDescription * pExcTypeDescr = 0;
 277     OUString unoName( toUNOname( header->exceptionType->name() ) );
 278     ::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 279     OSL_ENSURE( pExcTypeDescr, "### can not get type description for exception!!!" );
 280     if (! pExcTypeDescr)
 281         terminate();
 282
 283     // construct uno exception any
 284     ::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 285     ::typelib_typedescription_release( pExcTypeDescr );
 286 }
 287
 288 }
 289