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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 "cppu/helper/purpenv/Mapping.hxx"
22 :
23 : #include "Proxy.hxx"
24 :
25 : #include "osl/interlck.h"
26 : #include "uno/environment.hxx"
27 : #include "uno/dispatcher.h"
28 : #include "typelib/typedescription.h"
29 :
30 :
31 : #ifdef debug
32 : # define LOG_LIFECYCLE_cppu_helper_purpenv_Mapping
33 : #endif
34 :
35 : #ifdef LOG_LIFECYCLE_cppu_helper_purpenv_Mapping
36 : # include <iostream>
37 : # define LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(x) x
38 :
39 : #else
40 : # define LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(x)
41 :
42 : #endif
43 :
44 :
45 : using namespace com::sun::star;
46 :
47 :
48 : class Mapping : public uno_Mapping
49 : {
50 : uno::Environment m_from;
51 : uno::Environment m_to;
52 :
53 : oslInterlockedCount m_nCount;
54 :
55 : cppu::helper::purpenv::ProbeFun * m_probeFun;
56 : void * m_pContext;
57 :
58 : public:
59 : explicit Mapping(uno_Environment * pFrom,
60 : uno_Environment * pTo,
61 : cppu::helper::purpenv::ProbeFun * probeFun,
62 : void * pProbeContext);
63 : virtual ~Mapping(void);
64 :
65 : void mapInterface(
66 : uno_Interface ** ppOut,
67 : uno_Interface * pUnoI,
68 : typelib_InterfaceTypeDescription * pTypeDescr);
69 :
70 : void acquire(void);
71 : void release(void);
72 : };
73 :
74 0 : static void SAL_CALL s_mapInterface(
75 : uno_Mapping * puno_Mapping,
76 : uno_Interface ** ppOut,
77 : uno_Interface * pUnoI,
78 : typelib_InterfaceTypeDescription * pTypeDescr )
79 : SAL_THROW_EXTERN_C()
80 : {
81 0 : Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
82 0 : pMapping->mapInterface(ppOut, pUnoI, pTypeDescr);
83 0 : }
84 :
85 : extern "C" {
86 0 : static void SAL_CALL s_acquire(uno_Mapping * puno_Mapping)
87 : SAL_THROW_EXTERN_C()
88 : {
89 0 : Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
90 0 : pMapping->acquire();
91 0 : }
92 :
93 0 : static void SAL_CALL s_release(uno_Mapping * puno_Mapping)
94 : SAL_THROW_EXTERN_C()
95 : {
96 0 : Mapping * pMapping = static_cast<Mapping * >(puno_Mapping);
97 0 : pMapping->release();
98 0 : }
99 :
100 :
101 0 : static void s_getIdentifier_v(va_list * pParam)
102 : {
103 0 : uno_ExtEnvironment * pEnv = va_arg(*pParam, uno_ExtEnvironment *);
104 0 : rtl_uString ** ppOid = va_arg(*pParam, rtl_uString **);
105 0 : uno_Interface * pUnoI = va_arg(*pParam, uno_Interface *);
106 :
107 0 : pEnv->getObjectIdentifier(pEnv, ppOid, pUnoI);
108 0 : }
109 :
110 0 : static void SAL_CALL s_free(uno_Mapping * puno_Mapping)
111 : SAL_THROW_EXTERN_C()
112 : {
113 0 : Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
114 0 : delete pMapping;
115 0 : }
116 : }
117 :
118 0 : Mapping::Mapping(uno_Environment * pFrom,
119 : uno_Environment * pTo,
120 : cppu::helper::purpenv::ProbeFun * probeFun,
121 : void * pProbeContext
122 : ) SAL_THROW(())
123 : : m_from (pFrom),
124 : m_to (pTo),
125 : m_nCount (1),
126 : m_probeFun(probeFun),
127 0 : m_pContext(pProbeContext)
128 : {
129 : LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(fprintf(stderr, "LIFE: %s -> %p\n", "Mapping::Mapping(uno_Environment * pFrom, uno_Environment * pTo) SAL_THROW(())", this));
130 :
131 0 : uno_Mapping::acquire = s_acquire;
132 0 : uno_Mapping::release = s_release;
133 0 : uno_Mapping::mapInterface = (uno_MapInterfaceFunc)s_mapInterface;
134 0 : }
135 :
136 0 : Mapping::~Mapping(void)
137 : {
138 : LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(fprintf(stderr, "LIFE: %s -> %p\n", "Mapping::~Mapping(void)", this));
139 0 : }
140 :
141 :
142 0 : void Mapping::mapInterface(
143 : uno_Interface ** ppOut,
144 : uno_Interface * pUnoI,
145 : typelib_InterfaceTypeDescription * pTypeDescr)
146 : {
147 : OSL_ASSERT(ppOut && pTypeDescr);
148 0 : if (*ppOut)
149 : {
150 0 : (*ppOut)->release(*ppOut);
151 0 : *ppOut = 0;
152 : }
153 :
154 0 : if (!pUnoI)
155 0 : return;
156 :
157 : // get object id of uno interface to be wrapped
158 : // need to enter environment because of potential "queryInterface" call
159 0 : rtl_uString * pOId = 0;
160 0 : uno_Environment_invoke(m_from.get(), s_getIdentifier_v, m_from.get(), &pOId, pUnoI);
161 : OSL_ASSERT(pOId);
162 :
163 : // try to get any known interface from target environment
164 0 : m_to.get()->pExtEnv->getRegisteredInterface(m_to.get()->pExtEnv, (void **)ppOut, pOId, pTypeDescr);
165 :
166 0 : if (!*ppOut) // not yet there, register new proxy interface
167 : {
168 : // try to publish a new proxy (ref count initially 1)
169 : uno_Interface * pProxy = new Proxy(this,
170 0 : m_from.get(),
171 0 : m_to.get(),
172 : pUnoI,
173 : pTypeDescr,
174 : pOId,
175 : m_probeFun,
176 0 : m_pContext);
177 :
178 : // proxy may be exchanged during registration
179 0 : m_to.get()->pExtEnv->registerProxyInterface(m_to.get()->pExtEnv,
180 : (void **)&pProxy,
181 : Proxy_free,
182 : pOId,
183 0 : pTypeDescr);
184 :
185 0 : *ppOut = pProxy;
186 : }
187 :
188 0 : rtl_uString_release(pOId);
189 : }
190 :
191 :
192 0 : void Mapping::acquire() SAL_THROW(())
193 : {
194 0 : if (osl_atomic_increment(&m_nCount) == 1)
195 : {
196 0 : uno_Mapping * pMapping = this;
197 :
198 0 : ::uno_registerMapping(&pMapping, s_free, m_from.get(), m_to.get(), NULL);
199 : }
200 0 : }
201 :
202 0 : void Mapping::release() SAL_THROW(())
203 : {
204 0 : if (osl_atomic_decrement(&m_nCount) == 0)
205 0 : ::uno_revokeMapping(this);
206 0 : }
207 :
208 :
209 : namespace cppu { namespace helper { namespace purpenv {
210 :
211 0 : void createMapping(uno_Mapping ** ppMapping,
212 : uno_Environment * pFrom,
213 : uno_Environment * pTo,
214 : ProbeFun * probeFun,
215 : void * pContext
216 : )
217 : {
218 0 : *ppMapping = new Mapping(pFrom, pTo, probeFun, pContext);
219 :
220 0 : ::uno_registerMapping(ppMapping, s_free, pFrom, pTo, NULL);
221 0 : }
222 :
223 : }}}
224 :
225 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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