cppu/source/uno/IdentityMapping.cxx

   1 /*************************************************************************
   2  *
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * Copyright 2008 by Sun Microsystems, Inc.
   6  *
   7  * OpenOffice.org - a multi-platform office productivity suite
   8  *
   9  * $RCSfile: IdentityMapping.cxx,v $
  10  * $Revision: 1.4 $
  11  *
  12  * This file is part of OpenOffice.org.
  13  *
  14  * OpenOffice.org is free software: you can redistribute it and/or modify
  15  * it under the terms of the GNU Lesser General Public License version 3
  16  * only, as published by the Free Software Foundation.
  17  *
  18  * OpenOffice.org is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU Lesser General Public License version 3 for more details
  22  * (a copy is included in the LICENSE file that accompanied this code).
  23  *
  24  * You should have received a copy of the GNU Lesser General Public License
  25  * version 3 along with OpenOffice.org.  If not, see
  26  * <http://www.openoffice.org/license.html>
  27  * for a copy of the LGPLv3 License.
  28  *
  29  ************************************************************************/
  30
  31 #include "IdentityMapping.hxx"
  32
  33 #include "uno/mapping.h"
  34 #include "uno/environment.hxx"
  35
  36 #include "osl/interlck.h"
  37
  38
  39 using namespace ::com::sun::star;
  40
  41 struct IdentityMapping : public uno_Mapping
  42 {
  43     sal_Int32        m_nRef;
  44     uno::Environment m_env;
  45
  46     IdentityMapping(uno::Environment const & rEnv);
  47 };
  48
  49 extern "C"
  50 {
  51
  52 static void SAL_CALL s_free(uno_Mapping * pMapping) SAL_THROW(())
  53 {
  54     delete static_cast<IdentityMapping *>(pMapping);
  55 }
  56
  57 static void SAL_CALL s_acquire(uno_Mapping * pMapping) SAL_THROW(())
  58 {
  59     static rtl::OUString s_purpose;
  60
  61     if (1 == ::osl_incrementInterlockedCount(&static_cast<IdentityMapping *>(pMapping)->m_nRef))
  62     {
  63         uno_registerMapping(
  64             &pMapping,
  65             s_free,
  66             static_cast<IdentityMapping *>(pMapping)->m_env.get(),
  67             static_cast<IdentityMapping *>(pMapping)->m_env.get(),
  68             s_purpose.pData);
  69     }
  70 }
  71
  72 static void SAL_CALL s_release(uno_Mapping * pMapping) SAL_THROW(())
  73 {
  74     if (!::osl_decrementInterlockedCount(&static_cast<IdentityMapping *>(pMapping )->m_nRef))
  75         uno_revokeMapping(pMapping);
  76 }
  77
  78 static void SAL_CALL s_mapInterface(uno_Mapping                       * pMapping,
  79                                     void                             ** ppOut,
  80                                     void                              * pInterface,
  81                                     struct _typelib_InterfaceTypeDescription * /*pInterfaceTypeDescr*/)
  82     SAL_THROW(())
  83 {
  84     *ppOut = pInterface;
  85
  86     if (pInterface)
  87     {
  88         IdentityMapping * that = static_cast<IdentityMapping *>(pMapping);
  89
  90         (that->m_env.get()->pExtEnv->acquireInterface)(that->m_env.get()->pExtEnv, pInterface);
  91     }
  92 }
  93 }
  94
  95
  96 IdentityMapping::IdentityMapping(uno::Environment const & rEnv)
  97     : m_nRef(0),
  98       m_env(rEnv)
  99 {
 100     uno_Mapping::acquire                = s_acquire;
 101     uno_Mapping::release                = s_release;
 102     uno_Mapping::mapInterface   = s_mapInterface;
 103 }
 104
 105
 106 uno_Mapping * createIdentityMapping(uno::Environment const & rEnv) SAL_THROW(())
 107 {
 108     return new IdentityMapping(rEnv);
 109 }