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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 :
74 436 : static void SAL_CALL s_mapInterface(
75 : uno_Mapping * puno_Mapping,
76 : void ** ppOut,
77 : void * pUnoI,
78 : typelib_InterfaceTypeDescription * pTypeDescr )
79 : SAL_THROW_EXTERN_C()
80 : {
81 436 : Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
82 : pMapping->mapInterface(
83 : reinterpret_cast<uno_Interface **>(ppOut),
84 436 : static_cast<uno_Interface *>(pUnoI), pTypeDescr);
85 436 : }
86 :
87 : extern "C" {
88 1208 : static void SAL_CALL s_acquire(uno_Mapping * puno_Mapping)
89 : SAL_THROW_EXTERN_C()
90 : {
91 1208 : Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
92 1208 : pMapping->acquire();
93 1208 : }
94 :
95 1124 : static void SAL_CALL s_release(uno_Mapping * puno_Mapping)
96 : SAL_THROW_EXTERN_C()
97 : {
98 1124 : Mapping * pMapping = static_cast<Mapping * >(puno_Mapping);
99 1124 : pMapping->release();
100 1124 : }
101 :
102 :
103 436 : static void s_getIdentifier_v(va_list * pParam)
104 : {
105 436 : uno_ExtEnvironment * pEnv = va_arg(*pParam, uno_ExtEnvironment *);
106 436 : rtl_uString ** ppOid = va_arg(*pParam, rtl_uString **);
107 436 : uno_Interface * pUnoI = va_arg(*pParam, uno_Interface *);
108 :
109 436 : pEnv->getObjectIdentifier(pEnv, ppOid, pUnoI);
110 436 : }
111 :
112 0 : static void SAL_CALL s_free(uno_Mapping * puno_Mapping)
113 : SAL_THROW_EXTERN_C()
114 : {
115 0 : Mapping * pMapping = static_cast<Mapping *>(puno_Mapping);
116 0 : delete pMapping;
117 0 : }
118 : }
119 :
120 8 : Mapping::Mapping(uno_Environment * pFrom,
121 : uno_Environment * pTo,
122 : cppu::helper::purpenv::ProbeFun * probeFun,
123 : void * pProbeContext
124 : )
125 : : m_from (pFrom),
126 : m_to (pTo),
127 : m_nCount (1),
128 : m_probeFun(probeFun),
129 8 : m_pContext(pProbeContext)
130 : {
131 : LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(fprintf(stderr, "LIFE: %s -> %p\n", "Mapping::Mapping(uno_Environment * pFrom, uno_Environment * pTo)", this));
132 :
133 8 : uno_Mapping::acquire = s_acquire;
134 8 : uno_Mapping::release = s_release;
135 8 : uno_Mapping::mapInterface = (uno_MapInterfaceFunc)s_mapInterface;
136 8 : }
137 :
138 0 : Mapping::~Mapping(void)
139 : {
140 : LOG_LIFECYCLE_cppu_helper_purpenv_Mapping_emit(fprintf(stderr, "LIFE: %s -> %p\n", "Mapping::~Mapping(void)", this));
141 0 : }
142 :
143 :
144 436 : void Mapping::mapInterface(
145 : uno_Interface ** ppOut,
146 : uno_Interface * pUnoI,
147 : typelib_InterfaceTypeDescription * pTypeDescr)
148 : {
149 : OSL_ASSERT(ppOut && pTypeDescr);
150 436 : if (*ppOut)
151 : {
152 0 : (*ppOut)->release(*ppOut);
153 0 : *ppOut = 0;
154 : }
155 :
156 436 : if (!pUnoI)
157 436 : return;
158 :
159 : // get object id of uno interface to be wrapped
160 : // need to enter environment because of potential "queryInterface" call
161 436 : rtl_uString * pOId = 0;
162 436 : uno_Environment_invoke(m_from.get(), s_getIdentifier_v, m_from.get(), &pOId, pUnoI);
163 : OSL_ASSERT(pOId);
164 :
165 : // try to get any known interface from target environment
166 436 : m_to.get()->pExtEnv->getRegisteredInterface(m_to.get()->pExtEnv, (void **)ppOut, pOId, pTypeDescr);
167 :
168 436 : if (!*ppOut) // not yet there, register new proxy interface
169 : {
170 : // try to publish a new proxy (ref count initially 1)
171 : uno_Interface * pProxy = new Proxy(this,
172 296 : m_from.get(),
173 296 : m_to.get(),
174 : pUnoI,
175 : pTypeDescr,
176 : pOId,
177 : m_probeFun,
178 888 : m_pContext);
179 :
180 : // proxy may be exchanged during registration
181 592 : m_to.get()->pExtEnv->registerProxyInterface(m_to.get()->pExtEnv,
182 : (void **)&pProxy,
183 : Proxy_free,
184 : pOId,
185 592 : pTypeDescr);
186 :
187 296 : *ppOut = pProxy;
188 : }
189 :
190 436 : rtl_uString_release(pOId);
191 : }
192 :
193 :
194 1208 : void Mapping::acquire()
195 : {
196 1208 : if (osl_atomic_increment(&m_nCount) == 1)
197 : {
198 0 : uno_Mapping * pMapping = this;
199 :
200 0 : ::uno_registerMapping(&pMapping, s_free, m_from.get(), m_to.get(), NULL);
201 : }
202 1208 : }
203 :
204 1124 : void Mapping::release()
205 : {
206 1124 : if (osl_atomic_decrement(&m_nCount) == 0)
207 0 : ::uno_revokeMapping(this);
208 1124 : }
209 :
210 :
211 : namespace cppu { namespace helper { namespace purpenv {
212 :
213 8 : void createMapping(uno_Mapping ** ppMapping,
214 : uno_Environment * pFrom,
215 : uno_Environment * pTo,
216 : ProbeFun * probeFun,
217 : void * pContext
218 : )
219 : {
220 8 : *ppMapping = new Mapping(pFrom, pTo, probeFun, pContext);
221 :
222 8 : ::uno_registerMapping(ppMapping, s_free, pFrom, pTo, NULL);
223 8 : }
224 :
225 : }}}
226 :
227 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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