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 "osl/mutex.hxx"
      22             : #include "osl/thread.h"
      23             : #include "osl/thread.hxx"
      24             : #include "sal/log.hxx"
      25             : 
      26             : #include <cppu/Enterable.hxx>
      27             : #include "cppu/helper/purpenv/Environment.hxx"
      28             : #include "cppu/helper/purpenv/Mapping.hxx"
      29             : 
      30             : 
      31             : #ifdef debug
      32             : # define LOG_LIFECYCLE_UnsafeBridge
      33             : #endif
      34             : 
      35             : #ifdef LOG_LIFECYCLE_UnsafeBridge
      36             : #  include <iostream>
      37             : #  define LOG_LIFECYCLE_UnsafeBridge_emit(x) x
      38             : 
      39             : #else
      40             : #  define LOG_LIFECYCLE_UnsafeBridge_emit(x)
      41             : 
      42             : #endif
      43             : 
      44             : 
      45             : class UnsafeBridge : public cppu::Enterable
      46             : {
      47             :     osl::Mutex          m_mutex;
      48             :     sal_Int32           m_count;
      49             :     oslThreadIdentifier m_threadId;
      50             : 
      51             :     virtual  ~UnsafeBridge();
      52             : 
      53             : public:
      54             :     explicit UnsafeBridge();
      55             : 
      56             :     virtual void v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam) SAL_OVERRIDE;
      57             :     virtual void v_callOut_v (uno_EnvCallee * pCallee, va_list * pParam) SAL_OVERRIDE;
      58             : 
      59             :     virtual void v_enter() SAL_OVERRIDE;
      60             :     virtual void v_leave() SAL_OVERRIDE;
      61             : 
      62             :     virtual bool v_isValid(rtl::OUString * pReason) SAL_OVERRIDE;
      63             : };
      64             : 
      65           0 : UnsafeBridge::UnsafeBridge()
      66             :     : m_count   (0),
      67           0 :       m_threadId(0)
      68             : {
      69             :     LOG_LIFECYCLE_UnsafeBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "UnsafeBridge::UnsafeBridge(uno_Environment * pEnv)", this));
      70           0 : }
      71             : 
      72           0 : UnsafeBridge::~UnsafeBridge()
      73             : {
      74             :     LOG_LIFECYCLE_UnsafeBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "UnsafeBridge::~UnsafeBridge()", this));
      75             : 
      76             :     SAL_WARN_IF(m_count < 0, "cppu.unsafebridge", "m_count is less than 0");
      77           0 : }
      78             : 
      79           0 : void UnsafeBridge::v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam)
      80             : {
      81           0 :     enter();
      82           0 :     pCallee(pParam);
      83           0 :     leave();
      84           0 : }
      85             : 
      86           0 : void UnsafeBridge::v_callOut_v(uno_EnvCallee * pCallee, va_list * pParam)
      87             : {
      88             :     SAL_WARN_IF(m_count <= 0, "cppu.unsafebridge", "m_count is less than or equal to 0");
      89             : 
      90           0 :     -- m_count;
      91           0 :     pCallee(pParam);
      92           0 :     ++ m_count;
      93             : 
      94           0 :     if (!m_threadId)
      95           0 :         m_threadId = osl::Thread::getCurrentIdentifier();
      96           0 : }
      97             : 
      98           0 : void UnsafeBridge::v_enter()
      99             : {
     100           0 :     m_mutex.acquire();
     101             : 
     102             :     SAL_WARN_IF(m_count < 0, "cppu.unsafebridge", "m_count is less than 0");
     103             : 
     104           0 :     if (m_count == 0)
     105           0 :         m_threadId = osl::Thread::getCurrentIdentifier();
     106             : 
     107           0 :     ++ m_count;
     108           0 : }
     109             : 
     110           0 : void UnsafeBridge::v_leave()
     111             : {
     112             :     SAL_WARN_IF(m_count <= 0, "cppu.unsafebridge", "m_count is less than or equal to 0");
     113             : 
     114           0 :     -- m_count;
     115           0 :     if (!m_count)
     116           0 :         m_threadId = 0;
     117             : 
     118             : 
     119           0 :     m_mutex.release();
     120           0 : }
     121             : 
     122           0 : bool UnsafeBridge::v_isValid(rtl::OUString * pReason)
     123             : {
     124           0 :     bool result = m_count > 0;
     125           0 :     if (!result)
     126             :     {
     127           0 :         *pReason = "not entered";
     128             :     }
     129             :     else
     130             :     {
     131           0 :         result = m_threadId == osl::Thread::getCurrentIdentifier();
     132             : 
     133           0 :         if (!result)
     134           0 :             *pReason = "wrong thread";
     135             :     }
     136             : 
     137           0 :     if (result)
     138           0 :         *pReason = "OK";
     139             : 
     140           0 :     return result;
     141             : }
     142             : 
     143           0 : extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_initEnvironment(uno_Environment * pEnv)
     144             :     SAL_THROW_EXTERN_C()
     145             : {
     146           0 :     cppu::helper::purpenv::Environment_initWithEnterable(pEnv, new UnsafeBridge());
     147           0 : }
     148             : 
     149           0 : extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_ext_getMapping(uno_Mapping     ** ppMapping,
     150             :                                    uno_Environment  * pFrom,
     151             :                                    uno_Environment  * pTo )
     152             : {
     153           0 :     cppu::helper::purpenv::createMapping(ppMapping, pFrom, pTo);
     154           0 : }
     155             : 
     156             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */