summaryrefslogtreecommitdiff
path: root/cppu/source/helper/purpenv/helper_purpenv_Mapping.cxx
blob: 9375dd7fdfb050091e850371ed20408bbe82559a (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
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */


#include "cppu/helper/purpenv/Mapping.hxx"

#include "Proxy.hxx"

#include "osl/interlck.h"
#include "uno/environment.hxx"
#include "uno/dispatcher.h"
#include "typelib/typedescription.h"


#ifdef debug
# define LOG_LIFECYCLE_cppu_helper_purpenv_Mapping
#endif

#ifdef LOG_LIFECYCLE_cppu_helper_purpenv_Mapping
#  include <iostream>
#  define LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(x) x

#else
#  define LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(x)

#endif


using namespace com::sun::star;


class Mapping : public uno_Mapping
{
    uno::Environment   m_from;
    uno::Environment   m_to;

    oslInterlockedCount m_nCount;

    cppu::helper::purpenv::ProbeFun * m_probeFun;
    void                            * m_pContext;

public:
    explicit  Mapping(uno_Environment                 * pFrom,
                      uno_Environment                 * pTo,
                      cppu::helper::purpenv::ProbeFun * probeFun,
                      void                            * pProbeContext);
    virtual  ~Mapping(void);

    void mapInterface(
        uno_Interface                    ** ppOut,
        uno_Interface                     * pUnoI,
        typelib_InterfaceTypeDescription  * pTypeDescr);

    void acquire(void);
    void release(void);
};

static void SAL_CALL s_mapInterface(
    uno_Mapping                       * puno_Mapping,
    uno_Interface                    ** ppOut,
    uno_Interface                     * pUnoI,
    typelib_InterfaceTypeDescription  * pTypeDescr )
    SAL_THROW_EXTERN_C()
{
    Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
    pMapping->mapInterface(ppOut, pUnoI, pTypeDescr);
}

extern "C" {
static void SAL_CALL s_acquire(uno_Mapping * puno_Mapping)
    SAL_THROW_EXTERN_C()
{
    Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
    pMapping->acquire();
}

static void SAL_CALL s_release(uno_Mapping * puno_Mapping)
    SAL_THROW_EXTERN_C()
{
    Mapping * pMapping = static_cast<Mapping * >(puno_Mapping);
    pMapping->release();
}


static void s_getIdentifier_v(va_list * pParam)
{
    uno_ExtEnvironment *  pEnv  = va_arg(*pParam, uno_ExtEnvironment *);
    rtl_uString        ** ppOid = va_arg(*pParam, rtl_uString **);
    uno_Interface      *  pUnoI = va_arg(*pParam, uno_Interface *);

    pEnv->getObjectIdentifier(pEnv, ppOid, pUnoI);
}

static void SAL_CALL s_free(uno_Mapping * puno_Mapping)
    SAL_THROW_EXTERN_C()
{
    Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
    delete pMapping;
}
}

Mapping::Mapping(uno_Environment                 * pFrom,
                 uno_Environment                 * pTo,
                 cppu::helper::purpenv::ProbeFun * probeFun,
                 void                            * pProbeContext
)
    : m_from    (pFrom),
      m_to      (pTo),
      m_nCount  (1),
      m_probeFun(probeFun),
      m_pContext(pProbeContext)
{
    LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(fprintf(stderr, "LIFE: %s -> %p\n", "Mapping::Mapping(uno_Environment * pFrom, uno_Environment * pTo)", this));

    uno_Mapping::acquire      = s_acquire;
    uno_Mapping::release      = s_release;
    uno_Mapping::mapInterface = (uno_MapInterfaceFunc)s_mapInterface;
}

Mapping::~Mapping(void)
{
    LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(fprintf(stderr, "LIFE: %s -> %p\n", "Mapping::~Mapping(void)", this));
}


void Mapping::mapInterface(
    uno_Interface                    ** ppOut,
    uno_Interface                     * pUnoI,
    typelib_InterfaceTypeDescription  * pTypeDescr)
{
    OSL_ASSERT(ppOut && pTypeDescr);
    if (*ppOut)
    {
        (*ppOut)->release(*ppOut);
        *ppOut = 0;
    }

    if (!pUnoI)
        return;

    // get object id of uno interface to be wrapped
    // need to enter environment because of potential "queryInterface" call
    rtl_uString * pOId = 0;
    uno_Environment_invoke(m_from.get(), s_getIdentifier_v, m_from.get(), &pOId, pUnoI);
    OSL_ASSERT(pOId);

     // try to get any known interface from target environment
    m_to.get()->pExtEnv->getRegisteredInterface(m_to.get()->pExtEnv, (void **)ppOut, pOId, pTypeDescr);

    if (!*ppOut) // not yet there, register new proxy interface
    {
        // try to publish a new proxy (ref count initially 1)
        uno_Interface * pProxy = new Proxy(this,
                                           m_from.get(),
                                           m_to.get(),
                                           pUnoI,
                                           pTypeDescr,
                                           pOId,
                                           m_probeFun,
                                           m_pContext);

        // proxy may be exchanged during registration
        m_to.get()->pExtEnv->registerProxyInterface(m_to.get()->pExtEnv,
                                                    (void **)&pProxy,
                                                    Proxy_free,
                                                    pOId,
                                                    pTypeDescr);

        *ppOut = pProxy;
    }

    rtl_uString_release(pOId);
}


void Mapping::acquire()
{
    if (osl_atomic_increment(&m_nCount) == 1)
    {
        uno_Mapping * pMapping = this;

        ::uno_registerMapping(&pMapping, s_free, m_from.get(), m_to.get(), NULL);
    }
}

void Mapping::release()
{
    if (osl_atomic_decrement(&m_nCount) == 0)
        ::uno_revokeMapping(this);
}


namespace cppu { namespace helper { namespace purpenv {

void createMapping(uno_Mapping     ** ppMapping,
                   uno_Environment  * pFrom,
                   uno_Environment  * pTo,
                   ProbeFun         * probeFun,
                   void             * pContext
 )
{
    *ppMapping = new Mapping(pFrom, pTo, probeFun, pContext);

    ::uno_registerMapping(ppMapping, s_free, pFrom, pTo, NULL);
}

}}}

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