bridges/source/cpp_uno/gcc3_linux_s390x/except.cxx

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  31
  32 // MARKER(update_precomp.py): autogen include statement, do not remove
  33 #include "precompiled_bridges.hxx"
  34
  35 #include <stdio.h>
  36 #include <string.h>
  37 #include <dlfcn.h>
  38 #include <cxxabi.h>
  39 #include <hash_map>
  40
  41 #include <rtl/strbuf.hxx>
  42 #include <rtl/ustrbuf.hxx>
  43 #include <osl/diagnose.h>
  44 #include <osl/mutex.hxx>
  45
  46 #include <com/sun/star/uno/genfunc.hxx>
  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 iFind( m_generatedRttis.find( unoName ) );
 171             if (iFind == 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 = iFind->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     void * pCppExc;
 231     type_info * rtti;
 232
 233     {
 234     // construct cpp exception object
 235     typelib_TypeDescription * pTypeDescr = 0;
 236     TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
 237     OSL_ASSERT( pTypeDescr );
 238     if (! pTypeDescr)
 239         terminate();
 240
 241     pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
 242     ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );
 243
 244     // destruct uno exception
 245     ::uno_any_destruct( pUnoExc, 0 );
 246     // avoiding locked counts
 247     static RTTI * s_rtti = 0;
 248     if (! s_rtti)
 249     {
 250         MutexGuard guard( Mutex::getGlobalMutex() );
 251         if (! s_rtti)
 252         {
 253 #ifdef LEAK_STATIC_DATA
 254             s_rtti = new RTTI();
 255 #else
 256             static RTTI rtti_data;
 257             s_rtti = &rtti_data;
 258 #endif
 259         }
 260     }
 261     rtti = (type_info *)s_rtti->getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
 262     TYPELIB_DANGER_RELEASE( pTypeDescr );
 263     OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
 264     if (! rtti)
 265         terminate();
 266     }
 267
 268     __cxa_throw( pCppExc, rtti, deleteException );
 269 }
 270
 271 //==================================================================================================
 272 void fillUnoException( __cxa_exception * header, uno_Any * pExc, uno_Mapping * pCpp2Uno )
 273 {
 274     OSL_ENSURE( header, "### no exception header!!!" );
 275     if (! header)
 276         terminate();
 277
 278     typelib_TypeDescription * pExcTypeDescr = 0;
 279     OUString unoName( toUNOname( header->exceptionType->name() ) );
 280     ::typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
 281     OSL_ENSURE( pExcTypeDescr, "### can not get type description for exception!!!" );
 282     if (! pExcTypeDescr)
 283         terminate();
 284
 285     // construct uno exception any
 286     ::uno_any_constructAndConvert( pExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
 287     ::typelib_typedescription_release( pExcTypeDescr );
 288 }
 289
 290 }
 291 /* vi:set tabstop=4 shiftwidth=4 expandtab: */