cppu/source/uno/IdentityMapping.cxx

   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 #include "IdentityMapping.hxx"
  21
  22 #include "uno/mapping.h"
  23 #include "uno/environment.hxx"
  24
  25 #include "osl/interlck.h"
  26
  27
  28 using namespace ::com::sun::star;
  29
  30 struct IdentityMapping : public uno_Mapping
  31 {
  32     sal_Int32        m_nRef;
  33     uno::Environment m_env;
  34
  35     IdentityMapping(uno::Environment const & rEnv);
  36 };
  37
  38 extern "C"
  39 {
  40
  41 static void SAL_CALL s_free(uno_Mapping * pMapping) SAL_THROW(())
  42 {
  43     delete static_cast<IdentityMapping *>(pMapping);
  44 }
  45
  46 static void SAL_CALL s_acquire(uno_Mapping * pMapping) SAL_THROW(())
  47 {
  48     static rtl::OUString s_purpose;
  49
  50     if (1 == osl_atomic_increment(&static_cast<IdentityMapping *>(pMapping)->m_nRef))
  51     {
  52         uno_registerMapping(
  53             &pMapping,
  54             s_free,
  55             static_cast<IdentityMapping *>(pMapping)->m_env.get(),
  56             static_cast<IdentityMapping *>(pMapping)->m_env.get(),
  57             s_purpose.pData);
  58     }
  59 }
  60
  61 static void SAL_CALL s_release(uno_Mapping * pMapping) SAL_THROW(())
  62 {
  63     if (!osl_atomic_decrement(&static_cast<IdentityMapping *>(pMapping )->m_nRef))
  64         uno_revokeMapping(pMapping);
  65 }
  66
  67 static void SAL_CALL s_mapInterface(uno_Mapping                       * pMapping,
  68                                     void                             ** ppOut,
  69                                     void                              * pInterface,
  70                                     SAL_UNUSED_PARAMETER struct _typelib_InterfaceTypeDescription * /*pInterfaceTypeDescr*/)
  71     SAL_THROW(())
  72 {
  73     *ppOut = pInterface;
  74
  75     if (pInterface)
  76     {
  77         IdentityMapping * that = static_cast<IdentityMapping *>(pMapping);
  78
  79         (that->m_env.get()->pExtEnv->acquireInterface)(that->m_env.get()->pExtEnv, pInterface);
  80     }
  81 }
  82 }
  83
  84
  85 IdentityMapping::IdentityMapping(uno::Environment const & rEnv)
  86     : m_nRef(0),
  87       m_env(rEnv)
  88 {
  89     uno_Mapping::acquire        = s_acquire;
  90     uno_Mapping::release        = s_release;
  91     uno_Mapping::mapInterface   = s_mapInterface;
  92 }
  93
  94
  95 uno_Mapping * createIdentityMapping(uno::Environment const & rEnv) SAL_THROW(())
  96 {
  97     return new IdentityMapping(rEnv);
  98 }
  99
 100 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */