Line data    Source code

       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 "bridges/cpp_uno/shared/bridge.hxx"
      22             : 
      23             : #include "bridges/cpp_uno/shared/cppinterfaceproxy.hxx"
      24             : #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx"
      25             : 
      26             : #include "com/sun/star/uno/XInterface.hpp"
      27             : #include "osl/interlck.h"
      28             : #include "rtl/ustring.h"
      29             : #include "sal/types.h"
      30             : #include "typelib/typedescription.h"
      31             : #include "uno/dispatcher.h"
      32             : #include "uno/environment.h"
      33             : #include "uno/mapping.h"
      34             : 
      35             : namespace bridges { namespace cpp_uno { namespace shared {
      36             : 
      37       11598 : void freeMapping(uno_Mapping * pMapping)
      38             : {
      39       11598 :     delete static_cast< Bridge::Mapping * >( pMapping )->pBridge;
      40       11598 : }
      41             : 
      42       74343 : void acquireMapping(uno_Mapping * pMapping)
      43             : {
      44       74343 :     static_cast< Bridge::Mapping * >( pMapping )->pBridge->acquire();
      45       74343 : }
      46             : 
      47       85929 : void releaseMapping(uno_Mapping * pMapping)
      48             : {
      49       85929 :     static_cast< Bridge::Mapping * >( pMapping )->pBridge->release();
      50       85929 : }
      51             : 
      52      222822 : void cpp2unoMapping(
      53             :     uno_Mapping * pMapping, void ** ppUnoI, void * pCppI,
      54             :     typelib_InterfaceTypeDescription * pTypeDescr)
      55             : {
      56             :     assert(ppUnoI && pTypeDescr);
      57      222822 :     if (*ppUnoI)
      58             :     {
      59             :         (*static_cast< uno_Interface * >( *ppUnoI )->release)(
      60           0 :             static_cast< uno_Interface * >( *ppUnoI ) );
      61           0 :         *ppUnoI = 0;
      62             :     }
      63      222822 :     if (pCppI)
      64             :     {
      65      222820 :         Bridge * pBridge = static_cast< Bridge::Mapping * >( pMapping )->pBridge;
      66             : 
      67             :         // get object id of interface to be wrapped
      68      222820 :         rtl_uString * pOId = 0;
      69             :         (*pBridge->pCppEnv->getObjectIdentifier)(
      70      222820 :             pBridge->pCppEnv, &pOId, pCppI );
      71             :         assert(pOId);
      72             : 
      73             :         // try to get any known interface from target environment
      74             :         (*pBridge->pUnoEnv->getRegisteredInterface)(
      75      222820 :             pBridge->pUnoEnv, ppUnoI, pOId, pTypeDescr );
      76             : 
      77      222820 :         if (! *ppUnoI) // no existing interface, register new proxy interface
      78             :         {
      79             :             // try to publish a new proxy (refcount initially 1)
      80             :             uno_Interface * pSurrogate
      81             :                 = bridges::cpp_uno::shared::UnoInterfaceProxy::create(
      82             :                     pBridge,
      83             :                     static_cast< ::com::sun::star::uno::XInterface * >( pCppI ),
      84      192495 :                     pTypeDescr, pOId );
      85             : 
      86             :             // proxy may be exchanged during registration
      87             :             (*pBridge->pUnoEnv->registerProxyInterface)(
      88             :                 pBridge->pUnoEnv, reinterpret_cast< void ** >( &pSurrogate ),
      89             :                 freeUnoInterfaceProxy, pOId,
      90      192495 :                 pTypeDescr );
      91             : 
      92      192495 :             *ppUnoI = pSurrogate;
      93             :         }
      94      222820 :         ::rtl_uString_release( pOId );
      95             :     }
      96      222822 : }
      97             : 
      98      171984 : void uno2cppMapping(
      99             :     uno_Mapping * pMapping, void ** ppCppI, void * pUnoI,
     100             :     typelib_InterfaceTypeDescription * pTypeDescr)
     101             : {
     102             :     assert(ppCppI && pTypeDescr);
     103      171984 :     if (*ppCppI)
     104             :     {
     105             :         static_cast< ::com::sun::star::uno::XInterface * >( *ppCppI )->
     106           0 :             release();
     107           0 :         *ppCppI = 0;
     108             :     }
     109      171984 :     if (pUnoI)
     110             :     {
     111      171984 :         Bridge * pBridge = static_cast< Bridge::Mapping * >( pMapping )->pBridge;
     112             : 
     113             :         // get object id of uno interface to be wrapped
     114      171984 :         rtl_uString * pOId = 0;
     115             :         (*pBridge->pUnoEnv->getObjectIdentifier)(
     116      171984 :             pBridge->pUnoEnv, &pOId, pUnoI );
     117             :         assert(pOId);
     118             : 
     119             :         // try to get any known interface from target environment
     120             :         (*pBridge->pCppEnv->getRegisteredInterface)(
     121      171984 :             pBridge->pCppEnv, ppCppI, pOId, pTypeDescr );
     122             : 
     123      171984 :         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
     127             :                 = bridges::cpp_uno::shared::CppInterfaceProxy::create(
     128             :                     pBridge, static_cast< uno_Interface * >( pUnoI ),
     129      128338 :                     pTypeDescr, pOId );
     130             : 
     131             :             // proxy may be exchanged during registration
     132             :             (*pBridge->pCppEnv->registerProxyInterface)(
     133             :                 pBridge->pCppEnv, reinterpret_cast< void ** >( &pProxy ),
     134             :                 freeCppInterfaceProxy, pOId,
     135      128338 :                 pTypeDescr );
     136             : 
     137      128338 :             *ppCppI = pProxy;
     138             :         }
     139      171984 :         ::rtl_uString_release( pOId );
     140             :     }
     141      171984 : }
     142             : 
     143       11688 : uno_Mapping * Bridge::createMapping(
     144             :     uno_ExtEnvironment * pCppEnv, uno_ExtEnvironment * pUnoEnv,
     145             :     bool bExportCpp2Uno)
     146             : {
     147       11688 :     Bridge * bridge = new Bridge(pCppEnv, pUnoEnv, bExportCpp2Uno);
     148             :     //coverity[leaked_storage]
     149       11688 :     return bExportCpp2Uno ? &bridge->aCpp2Uno : &bridge->aUno2Cpp;
     150             : }
     151             : 
     152      395176 : void Bridge::acquire()
     153             : {
     154      395176 :     if (1 == osl_atomic_increment( &nRef ))
     155             :     {
     156           0 :         if (bExportCpp2Uno)
     157             :         {
     158           0 :             uno_Mapping * pMapping = &aCpp2Uno;
     159             :             ::uno_registerMapping(
     160             :                 &pMapping, freeMapping, &pCppEnv->aBase,
     161           0 :                 &pUnoEnv->aBase, 0 );
     162             :         }
     163             :         else
     164             :         {
     165           0 :             uno_Mapping * pMapping = &aUno2Cpp;
     166             :             ::uno_registerMapping(
     167             :                 &pMapping, freeMapping, &pUnoEnv->aBase,
     168           0 :                 &pCppEnv->aBase, 0 );
     169             :         }
     170             :     }
     171      395176 : }
     172             : 
     173      405759 : void Bridge::release()
     174             : {
     175      405759 :     if (! osl_atomic_decrement( &nRef ))
     176             :     {
     177       11598 :         ::uno_revokeMapping( bExportCpp2Uno ? &aCpp2Uno : &aUno2Cpp );
     178             :     }
     179      405759 : }
     180             : 
     181       11688 : Bridge::Bridge(
     182             :     uno_ExtEnvironment * pCppEnv_, uno_ExtEnvironment * pUnoEnv_,
     183             :     bool bExportCpp2Uno_)
     184             :     : nRef( 1 )
     185             :     , pCppEnv( pCppEnv_ )
     186             :     , pUnoEnv( pUnoEnv_ )
     187       11688 :     , bExportCpp2Uno( bExportCpp2Uno_ )
     188             : {
     189       11688 :     aCpp2Uno.pBridge = this;
     190       11688 :     aCpp2Uno.acquire = acquireMapping;
     191       11688 :     aCpp2Uno.release = releaseMapping;
     192       11688 :     aCpp2Uno.mapInterface = cpp2unoMapping;
     193             : 
     194       11688 :     aUno2Cpp.pBridge = this;
     195       11688 :     aUno2Cpp.acquire = acquireMapping;
     196       11688 :     aUno2Cpp.release = releaseMapping;
     197       11688 :     aUno2Cpp.mapInterface = uno2cppMapping;
     198             : 
     199       11688 :     (*pCppEnv->aBase.acquire)( &pCppEnv->aBase );
     200       11688 :     (*pUnoEnv->aBase.acquire)( &pUnoEnv->aBase );
     201       11688 : }
     202             : 
     203       11598 : Bridge::~Bridge()
     204             : {
     205       11598 :     (*pUnoEnv->aBase.release)( &pUnoEnv->aBase );
     206       11598 :     (*pCppEnv->aBase.release)( &pCppEnv->aBase );
     207       11598 : }
     208             : 
     209             : } } }
     210             : 
     211             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */