bridges/source/cpp_uno/gcc3_linux_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 <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 <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 iFind( m_generatedRttis.find( unoName ) );
 170             if (iFind == 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 = iFind->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     void * pCppExc;
 230     type_info * rtti;
 231
 232     {
 233     // construct cpp exception object
 234     typelib_TypeDescription * pTypeDescr = 0;
 235     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 236     OSL_ASSERT( pTypeDescr );
 237     if (! pTypeDescr)
 238         terminate();
 239
 240     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 241     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 242
 243     // destruct uno exception
 244     ::uno_any_destruct( pUnoExc, 0 );
 245     // avoiding locked counts
 246     static RTTI * s_rtti = 0;
 247     if (! s_rtti)
 248     {
 249         MutexGuard guard( Mutex::getGlobalMutex() );
 250         if (! s_rtti)
 251         {
 252 #ifdef LEAK_STATIC_DATA
 253             s_rtti = new RTTI();
 254 #else
 255             static RTTI rtti_data;
 256             s_rtti = &rtti_data;
 257 #endif
 258         }
 259     }
 260     rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 261     TYPELIB_DANGER_RELEASE( pTypeDescr );
 262     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 263     if (! rtti)
 264         terminate();
 265     }
 266
 267     __cxa_throw( pCppExc, rtti, deleteException );
 268 }
 269
 270 //==================================================================================================
 271 void fillUnoException( __cxa_exception * header, uno_Any * pExc, uno_Mapping * pCpp2Uno )
 272 {
 273     OSL_ENSURE( header, "### no exception header!!!" );
 274     if (! header)
 275         terminate();
 276
 277     typelib_TypeDescription * pExcTypeDescr = 0;
 278     OUString unoName( toUNOname( header->exceptionType->name() ) );
 279     ::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 280     OSL_ENSURE( pExcTypeDescr, "### can not get type description for exception!!!" );
 281     if (! pExcTypeDescr)
 282         terminate();
 283
 284     // construct uno exception any
 285     ::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 286     ::typelib_typedescription_release( pExcTypeDescr );
 287 }
 288
 289 }
 290