summaryrefslogtreecommitdiff
path: root/bridges/source/cpp_uno/gcc3_linux_x86-64/except.cxx
blob: fca8cb9ae2a2b773ebaee8e5a4fe889311819e68 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/


#include <stdio.h>
#include <string.h>
#include <dlfcn.h>
#include <cxxabi.h>
#include <boost/unordered_map.hpp>

#include <rtl/instance.hxx>
#include <rtl/strbuf.hxx>
#include <rtl/ustrbuf.hxx>
#include <osl/diagnose.h>
#include <osl/mutex.hxx>

#include <com/sun/star/uno/genfunc.hxx>
#include "com/sun/star/uno/RuntimeException.hpp"
#include <typelib/typedescription.hxx>
#include <uno/any2.h>

#include "share.hxx"


using namespace ::std;
using namespace ::osl;
using namespace ::rtl;
using namespace ::com::sun::star::uno;
using namespace ::__cxxabiv1;


namespace CPPU_CURRENT_NAMESPACE
{

void dummy_can_throw_anything( SAL_UNUSED_PARAMETER char const * )
{
}

//==================================================================================================
static OUString toUNOname( char const * p ) SAL_THROW(())
{
#if OSL_DEBUG_LEVEL > 1
    char const * start = p;
#endif

    // example: N3com3sun4star4lang24IllegalArgumentExceptionE

    OUStringBuffer buf( 64 );
    OSL_ASSERT( 'N' == *p );
    ++p; // skip N

    while ('E' != *p)
    {
        // read chars count
        long n = (*p++ - '0');
        while ('0' <= *p && '9' >= *p)
        {
            n *= 10;
            n += (*p++ - '0');
        }
        buf.appendAscii( p, n );
        p += n;
        if ('E' != *p)
            buf.append( (sal_Unicode)'.' );
    }

#if OSL_DEBUG_LEVEL > 1
    OUString ret( buf.makeStringAndClear() );
    OString c_ret( OUStringToOString( ret, RTL_TEXTENCODING_ASCII_US ) );
    fprintf( stderr, "> toUNOname(): %s => %s\n", start, c_ret.getStr() );
    return ret;
#else
    return buf.makeStringAndClear();
#endif
}

//==================================================================================================
class RTTI
{
    typedef boost::unordered_map< OUString, type_info *, OUStringHash > t_rtti_map;

    Mutex m_mutex;
    t_rtti_map m_rttis;
    t_rtti_map m_generatedRttis;

    void * m_hApp;

public:
    RTTI() SAL_THROW(());
    ~RTTI() SAL_THROW(());

    type_info * getRTTI( typelib_CompoundTypeDescription * ) SAL_THROW(());
};
//__________________________________________________________________________________________________
RTTI::RTTI() SAL_THROW(())
#if defined(FREEBSD) && __FreeBSD_version < 702104
    : m_hApp( dlopen( 0, RTLD_NOW | RTLD_GLOBAL ) )
#else
    : m_hApp( dlopen( 0, RTLD_LAZY ) )
#endif
{
}
//__________________________________________________________________________________________________
RTTI::~RTTI() SAL_THROW(())
{
    dlclose( m_hApp );
}

//__________________________________________________________________________________________________
type_info * RTTI::getRTTI( typelib_CompoundTypeDescription *pTypeDescr ) SAL_THROW(())
{
    type_info * rtti;

    OUString const & unoName = *(OUString const *)&pTypeDescr->aBase.pTypeName;

    MutexGuard guard( m_mutex );
    t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) );
    if (iFind == m_rttis.end())
    {
        // RTTI symbol
        OStringBuffer buf( 64 );
        buf.append( RTL_CONSTASCII_STRINGPARAM("_ZTIN") );
        sal_Int32 index = 0;
        do
        {
            OUString token( unoName.getToken( 0, '.', index ) );
            buf.append( token.getLength() );
            OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) );
            buf.append( c_token );
        }
        while (index >= 0);
        buf.append( 'E' );

        OString symName( buf.makeStringAndClear() );
#if defined(FREEBSD) && __FreeBSD_version < 702104 /* #i22253# */
        rtti = (type_info *)dlsym( RTLD_DEFAULT, symName.getStr() );
#else
        rtti = (type_info *)dlsym( m_hApp, symName.getStr() );
#endif

        if (rtti)
        {
            pair< t_rtti_map::iterator, bool > insertion(
                m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
            OSL_ENSURE( insertion.second, "### inserting new rtti failed?!" );
        }
        else
        {
            // try to lookup the symbol in the generated rtti map
            t_rtti_map::const_iterator iFind2( m_generatedRttis.find( unoName ) );
            if (iFind2 == m_generatedRttis.end())
            {
                // we must generate it !
                // symbol and rtti-name is nearly identical,
                // the symbol is prefixed with _ZTI
                char const * rttiName = symName.getStr() +4;
#if OSL_DEBUG_LEVEL > 1
                fprintf( stderr,"generated rtti for %s\n", rttiName );
#endif
                if (pTypeDescr->pBaseTypeDescription)
                {
                    // ensure availability of base
                    type_info * base_rtti = getRTTI(
                        (typelib_CompoundTypeDescription *)pTypeDescr->pBaseTypeDescription );
                    rtti = new __si_class_type_info(
                        strdup( rttiName ), (__class_type_info *)base_rtti );
                }
                else
                {
                    // this class has no base class
                    rtti = new __class_type_info( strdup( rttiName ) );
                }

                pair< t_rtti_map::iterator, bool > insertion(
                    m_generatedRttis.insert( t_rtti_map::value_type( unoName, rtti ) ) );
                OSL_ENSURE( insertion.second, "### inserting new generated rtti failed?!" );
            }
            else // taking already generated rtti
            {
                rtti = iFind2->second;
            }
        }
    }
    else
    {
        rtti = iFind->second;
    }

    return rtti;
}

struct RTTISingleton: public rtl::Static< RTTI, RTTISingleton > {};

//--------------------------------------------------------------------------------------------------
static void deleteException( void * pExc )
{
    __cxa_exception const * header = ((__cxa_exception const *)pExc - 1);
    typelib_TypeDescription * pTD = 0;
    OUString unoName( toUNOname( header->exceptionType->name() ) );
    ::typelib_typedescription_getByName( &pTD, unoName.pData );
    OSL_ENSURE( pTD, "### unknown exception type! leaving out destruction => leaking!!!" );
    if (pTD)
    {
        ::uno_destructData( pExc, pTD, cpp_release );
        ::typelib_typedescription_release( pTD );
    }
}

//==================================================================================================
void raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
{
#if OSL_DEBUG_LEVEL > 1
    OString cstr(
        OUStringToOString(
            *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
            RTL_TEXTENCODING_ASCII_US ) );
    fprintf( stderr, "> uno exception occurred: %s\n", cstr.getStr() );
#endif
    void * pCppExc;
    type_info * rtti;

    {
    // construct cpp exception object
    typelib_TypeDescription * pTypeDescr = 0;
    TYPELIB_DANGER_GET( &pTypeDescr, pUnoExc->pType );
    OSL_ASSERT( pTypeDescr );
    if (! pTypeDescr)
    {
        throw RuntimeException(
            OUString( RTL_CONSTASCII_USTRINGPARAM("cannot get typedescription for type ") ) +
            *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
            Reference< XInterface >() );
    }

    pCppExc = __cxa_allocate_exception( pTypeDescr->nSize );
    ::uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );

    // destruct uno exception
    ::uno_any_destruct( pUnoExc, 0 );
    // avoiding locked counts
	rtti = (type_info *)RTTISingleton::get().getRTTI( (typelib_CompoundTypeDescription *) pTypeDescr );
    TYPELIB_DANGER_RELEASE( pTypeDescr );
    OSL_ENSURE( rtti, "### no rtti for throwing exception!" );
    if (! rtti)
    {
        throw RuntimeException(
            OUString( RTL_CONSTASCII_USTRINGPARAM("no rtti for type ") ) +
            *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
            Reference< XInterface >() );
    }
    }

    __cxa_throw( pCppExc, rtti, deleteException );
}

//==================================================================================================
void fillUnoException( __cxa_exception * header, uno_Any * pUnoExc, uno_Mapping * pCpp2Uno )
{
    if (! header)
    {
        RuntimeException aRE(
            OUString( RTL_CONSTASCII_USTRINGPARAM("no exception header!") ),
            Reference< XInterface >() );
        Type const & rType = ::getCppuType( &aRE );
        uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
#if OSL_DEBUG_LEVEL > 0
        OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
        OSL_FAIL( cstr.getStr() );
#endif
        return;
    }

    typelib_TypeDescription * pExcTypeDescr = 0;
    OUString unoName( toUNOname( header->exceptionType->name() ) );
#if OSL_DEBUG_LEVEL > 1
    OString cstr_unoName( OUStringToOString( unoName, RTL_TEXTENCODING_ASCII_US ) );
    fprintf( stderr, "> c++ exception occurred: %s\n", cstr_unoName.getStr() );
#endif
    typelib_typedescription_getByName( &pExcTypeDescr, unoName.pData );
    if (0 == pExcTypeDescr)
    {
        RuntimeException aRE(
            OUString( RTL_CONSTASCII_USTRINGPARAM("exception type not found: ") ) + unoName,
            Reference< XInterface >() );
        Type const & rType = ::getCppuType( &aRE );
        uno_type_any_constructAndConvert( pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
#if OSL_DEBUG_LEVEL > 0
        OString cstr( OUStringToOString( aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
        OSL_FAIL( cstr.getStr() );
#endif
    }
    else
    {
        // construct uno exception any
        uno_any_constructAndConvert( pUnoExc, header->adjustedPtr, pExcTypeDescr, pCpp2Uno );
        typelib_typedescription_release( pExcTypeDescr );
    }
}

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */