LibreOffice Module bridges (master) 1
bridge.cxx
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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20
21#include <bridge.hxx>
22
23#include <cppinterfaceproxy.hxx>
24#include <unointerfaceproxy.hxx>
25
26#include <com/sun/star/uno/XInterface.hpp>
27#include <rtl/ustring.h>
28#include <sal/types.h>
29#include <typelib/typedescription.h>
30#include <uno/dispatcher.h>
31#include <uno/environment.h>
32#include <uno/mapping.h>
33
35
36void freeMapping(uno_Mapping * pMapping)
37{
38 delete static_cast< Bridge::Mapping * >( pMapping )->pBridge;
39}
40
42{
43 static_cast< Bridge::Mapping * >( pMapping )->pBridge->acquire();
44}
45
47{
48 static_cast< Bridge::Mapping * >( pMapping )->pBridge->release();
49}
50
52 uno_Mapping * pMapping, void ** ppUnoI, void * pCppI,
53 typelib_InterfaceTypeDescription * pTypeDescr)
54{
55 assert(ppUnoI && pTypeDescr);
56 if (*ppUnoI)
57 {
58 (*static_cast< uno_Interface * >( *ppUnoI )->release)(
59 static_cast< uno_Interface * >( *ppUnoI ) );
60 *ppUnoI = nullptr;
61 }
62 if (!pCppI)
63 return;
64
65 Bridge * pBridge = static_cast< Bridge::Mapping * >( pMapping )->pBridge;
66
67 // get object id of interface to be wrapped
68 rtl_uString * pOId = nullptr;
69 (*pBridge->pCppEnv->getObjectIdentifier)(
70 pBridge->pCppEnv, &pOId, pCppI );
71 assert(pOId);
72
73 // try to get any known interface from target environment
74 (*pBridge->pUnoEnv->getRegisteredInterface)(
75 pBridge->pUnoEnv, ppUnoI, pOId, pTypeDescr );
76
77 if (! *ppUnoI) // no existing interface, register new proxy interface
78 {
79 // try to publish a new proxy (refcount initially 1)
80 uno_Interface * pSurrogate
82 pBridge,
83 static_cast< ::com::sun::star::uno::XInterface * >( pCppI ),
84 pTypeDescr, pOId );
85
86 // proxy may be exchanged during registration
87 (*pBridge->pUnoEnv->registerProxyInterface)(
88 pBridge->pUnoEnv, reinterpret_cast< void ** >( &pSurrogate ),
90 pTypeDescr );
91
92 *ppUnoI = pSurrogate;
93 }
94 ::rtl_uString_release( pOId );
95}
96
98 uno_Mapping * pMapping, void ** ppCppI, void * pUnoI,
99 typelib_InterfaceTypeDescription * pTypeDescr)
100{
101 assert(ppCppI && pTypeDescr);
102 if (*ppCppI)
103 {
104 static_cast< ::com::sun::star::uno::XInterface * >( *ppCppI )->
105 release();
106 *ppCppI = nullptr;
107 }
108 if (!pUnoI)
109 return;
110
111 Bridge * pBridge = static_cast< Bridge::Mapping * >( pMapping )->pBridge;
112
113 // get object id of uno interface to be wrapped
114 rtl_uString * pOId = nullptr;
115 (*pBridge->pUnoEnv->getObjectIdentifier)(
116 pBridge->pUnoEnv, &pOId, pUnoI );
117 assert(pOId);
118
119 // try to get any known interface from target environment
120 (*pBridge->pCppEnv->getRegisteredInterface)(
121 pBridge->pCppEnv, ppCppI, pOId, pTypeDescr );
122
123 if (! *ppCppI) // no existing interface, register new proxy interface
124 {
125 // try to publish a new proxy (ref count initially 1)
126 com::sun::star::uno::XInterface * pProxy
128 pBridge, static_cast< uno_Interface * >( pUnoI ),
129 pTypeDescr, pOId );
130
131 // proxy may be exchanged during registration
132 (*pBridge->pCppEnv->registerProxyInterface)(
133 pBridge->pCppEnv, reinterpret_cast< void ** >( &pProxy ),
135 pTypeDescr );
136
137 *ppCppI = pProxy;
138 }
139 ::rtl_uString_release( pOId );
140}
141
143 uno_ExtEnvironment * pCppEnv, uno_ExtEnvironment * pUnoEnv,
144 bool bExportCpp2Uno)
145{
146 Bridge * bridge = new Bridge(pCppEnv, pUnoEnv, bExportCpp2Uno);
147 // coverity[leaked_storage] - on purpose
148 return bExportCpp2Uno ? &bridge->aCpp2Uno : &bridge->aUno2Cpp;
149}
150
152{
153 if (++nRef != 1)
154 return;
155
156 if (bExportCpp2Uno)
157 {
159 ::uno_registerMapping(
160 &pMapping, freeMapping, &pCppEnv->aBase,
161 &pUnoEnv->aBase, nullptr );
162 }
163 else
164 {
166 ::uno_registerMapping(
167 &pMapping, freeMapping, &pUnoEnv->aBase,
168 &pCppEnv->aBase, nullptr );
169 }
170}
171
173{
174 if (! --nRef )
175 {
176 ::uno_revokeMapping( bExportCpp2Uno ? &aCpp2Uno : &aUno2Cpp );
177 }
178}
179
181 uno_ExtEnvironment * pCppEnv_, uno_ExtEnvironment * pUnoEnv_,
182 bool bExportCpp2Uno_)
183 : nRef( 1 )
184 , pCppEnv( pCppEnv_ )
185 , pUnoEnv( pUnoEnv_ )
186 , bExportCpp2Uno( bExportCpp2Uno_ )
187{
188 aCpp2Uno.pBridge = this;
189 aCpp2Uno.acquire = acquireMapping;
190 aCpp2Uno.release = releaseMapping;
191 aCpp2Uno.mapInterface = cpp2unoMapping;
192
193 aUno2Cpp.pBridge = this;
194 aUno2Cpp.acquire = acquireMapping;
195 aUno2Cpp.release = releaseMapping;
196 aUno2Cpp.mapInterface = uno2cppMapping;
197
198 (*pCppEnv->aBase.acquire)( &pCppEnv->aBase );
199 (*pUnoEnv->aBase.acquire)( &pUnoEnv->aBase );
200}
201
203{
204 (*pUnoEnv->aBase.release)( &pUnoEnv->aBase );
205 (*pCppEnv->aBase.release)( &pCppEnv->aBase );
206}
207
208}
209
210/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Holding environments and mappings.
Definition: bridge.hxx:54
friend void uno2cppMapping(uno_Mapping *pMapping, void **ppCppI, void *pUnoI, typelib_InterfaceTypeDescription *pTypeDescr)
Definition: bridge.cxx:97
uno_ExtEnvironment * pCppEnv
Definition: bridge.hxx:91
friend void acquireMapping(uno_Mapping *pMapping)
Definition: bridge.cxx:41
Bridge(Bridge const &)=delete
friend void cpp2unoMapping(uno_Mapping *pMapping, void **ppUnoI, void *pCppI, typelib_InterfaceTypeDescription *pTypeDescr)
Definition: bridge.cxx:51
static uno_Mapping * createMapping(uno_ExtEnvironment *pCppEnv, uno_ExtEnvironment *pUnoEnv, bool bExportCpp2Uno)
Definition: bridge.cxx:142
std::atomic< std::size_t > nRef
Definition: bridge.hxx:89
friend void freeMapping(uno_Mapping *pMapping)
Definition: bridge.cxx:36
friend void releaseMapping(uno_Mapping *pMapping)
Definition: bridge.cxx:46
uno_ExtEnvironment * pUnoEnv
Definition: bridge.hxx:92
static com::sun::star::uno::XInterface * create(Bridge *pBridge, uno_Interface *pUnoI, typelib_InterfaceTypeDescription *pTypeDescr, OUString const &rOId)
static UnoInterfaceProxy * create(Bridge *pBridge, com::sun::star::uno::XInterface *pCppI, typelib_InterfaceTypeDescription *pTypeDescr, OUString const &rOId)
uno_Mapping * pMapping
sal_Int32 nRef
struct _uno_Mapping uno_Mapping
Definition: msvc/except.hxx:32
void cpp2unoMapping(uno_Mapping *pMapping, void **ppUnoI, void *pCppI, typelib_InterfaceTypeDescription *pTypeDescr)
Definition: bridge.cxx:51
void freeCppInterfaceProxy(uno_ExtEnvironment *pEnv, void *pInterface)
void acquireMapping(uno_Mapping *pMapping)
Definition: bridge.cxx:41
void freeMapping(uno_Mapping *pMapping)
Definition: bridge.cxx:36
void freeUnoInterfaceProxy(uno_ExtEnvironment *pEnv, void *pProxy)
void uno2cppMapping(uno_Mapping *pMapping, void **ppCppI, void *pUnoI, typelib_InterfaceTypeDescription *pTypeDescr)
Definition: bridge.cxx:97
void releaseMapping(uno_Mapping *pMapping)
Definition: bridge.cxx:46