LCOV - code coverage report
Current view: top level - cppu/source/threadpool - jobqueue.cxx (source / functions) Hit Total Coverage
Test: commit c8344322a7af75b84dd3ca8f78b05543a976dfd5 Lines: 76 84 90.5 %
Date: 2015-06-13 12:38:46 Functions: 10 10 100.0 %
Legend: Lines: hit not hit

          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             : #include "jobqueue.hxx"
      21             : #include "threadpool.hxx"
      22             : 
      23             : #include <osl/diagnose.h>
      24             : 
      25             : using namespace ::osl;
      26             : 
      27             : namespace cppu_threadpool {
      28             : 
      29      232145 :     JobQueue::JobQueue() :
      30             :         m_nToDo( 0 ),
      31             :         m_bSuspended( false ),
      32      232145 :         m_cndWait( osl_createCondition() )
      33             :     {
      34      232145 :         osl_resetCondition( m_cndWait );
      35      232145 :         m_DisposedCallerAdmin = DisposedCallerAdmin::getInstance();
      36      232145 :     }
      37             : 
      38      464214 :     JobQueue::~JobQueue()
      39             :     {
      40      232107 :         osl_destroyCondition( m_cndWait );
      41      232107 :     }
      42             : 
      43             : 
      44      266747 :     void JobQueue::add( void *pThreadSpecificData, RequestFun * doRequest )
      45             :     {
      46      266747 :         MutexGuard guard( m_mutex );
      47      266747 :         Job job = { pThreadSpecificData , doRequest };
      48      266747 :         m_lstJob.push_back( job );
      49      266747 :         if( ! m_bSuspended )
      50             :         {
      51      266734 :             osl_setCondition( m_cndWait );
      52             :         }
      53      266747 :         m_nToDo ++;
      54      266747 :     }
      55             : 
      56      239319 :     void *JobQueue::enter( sal_Int64 nDisposeId , bool bReturnWhenNoJob )
      57             :     {
      58      239319 :         void *pReturn = 0;
      59             :         {
      60             :             // synchronize with the dispose calls
      61      239319 :             MutexGuard guard( m_mutex );
      62      239326 :             if( m_DisposedCallerAdmin->isDisposed( nDisposeId ) )
      63             :             {
      64           0 :                 return 0;
      65             :             }
      66      239341 :             m_lstCallstack.push_front( nDisposeId );
      67             :         }
      68             : 
      69             : 
      70             :         while( true )
      71             :         {
      72      498942 :             if( bReturnWhenNoJob )
      73             :             {
      74      487611 :                 MutexGuard guard( m_mutex );
      75      487615 :                 if( m_lstJob.empty() )
      76             :                 {
      77      232201 :                     break;
      78      255412 :                 }
      79             :             }
      80             : 
      81      266743 :             osl_waitCondition( m_cndWait , 0 );
      82             : 
      83      266742 :             struct Job job={0,0};
      84             :             {
      85             :                 // synchronize with add and dispose calls
      86      266742 :                 MutexGuard guard( m_mutex );
      87             : 
      88      266744 :                 if( 0 == m_lstCallstack.front() )
      89             :                 {
      90             :                     // disposed !
      91           0 :                     if( m_lstJob.empty()
      92           0 :                         && (m_lstCallstack.empty()
      93           0 :                             || m_lstCallstack.front() != 0) )
      94             :                     {
      95           0 :                         osl_resetCondition( m_cndWait );
      96             :                     }
      97           0 :                     break;
      98             :                 }
      99             : 
     100             :                 OSL_ASSERT( ! m_lstJob.empty() );
     101      266729 :                 if( ! m_lstJob.empty() )
     102             :                 {
     103      266726 :                     job = m_lstJob.front();
     104      266735 :                     m_lstJob.pop_front();
     105             :                 }
     106      533491 :                 if( m_lstJob.empty()
     107      266747 :                     && (m_lstCallstack.empty() || m_lstCallstack.front() != 0) )
     108             :                 {
     109      248129 :                     osl_resetCondition( m_cndWait );
     110      266745 :                 }
     111             :             }
     112             : 
     113      266745 :             if( job.doRequest )
     114             :             {
     115      259605 :                 job.doRequest( job.pThreadSpecificData );
     116      259606 :                 MutexGuard guard( m_mutex );
     117      259605 :                 m_nToDo --;
     118             :             }
     119             :             else
     120             :             {
     121        7140 :                 pReturn = job.pThreadSpecificData;
     122        7140 :                 MutexGuard guard( m_mutex );
     123        7140 :                 m_nToDo --;
     124        7140 :                 break;
     125             :             }
     126             :         }
     127             : 
     128             :         {
     129             :             // synchronize with the dispose calls
     130      239339 :             MutexGuard guard( m_mutex );
     131      239340 :             m_lstCallstack.pop_front();
     132             :         }
     133             : 
     134      498947 :         return pReturn;
     135             :     }
     136             : 
     137          43 :     void JobQueue::dispose( sal_Int64 nDisposeId )
     138             :     {
     139          43 :         MutexGuard guard( m_mutex );
     140         141 :         for( CallStackList::iterator ii = m_lstCallstack.begin() ;
     141          94 :              ii != m_lstCallstack.end() ;
     142             :              ++ii )
     143             :         {
     144           4 :             if( (*ii) == nDisposeId )
     145             :             {
     146           0 :                 (*ii) = 0;
     147             :             }
     148             :         }
     149             : 
     150          43 :         if( !m_lstCallstack.empty()  && ! m_lstCallstack.front() )
     151             :         {
     152             :             // The thread is waiting for a disposed pCallerId, let it go
     153           0 :             osl_setCondition( m_cndWait );
     154          43 :         }
     155          43 :     }
     156             : 
     157          13 :     void JobQueue::suspend()
     158             :     {
     159          13 :         MutexGuard guard( m_mutex );
     160          13 :         m_bSuspended = true;
     161          13 :     }
     162             : 
     163          57 :     void JobQueue::resume()
     164             :     {
     165          57 :         MutexGuard guard( m_mutex );
     166          57 :         m_bSuspended = false;
     167          57 :         if( ! m_lstJob.empty() )
     168             :         {
     169          21 :             osl_setCondition( m_cndWait );
     170          57 :         }
     171          57 :     }
     172             : 
     173      928593 :     bool JobQueue::isEmpty() const
     174             :     {
     175      928593 :         MutexGuard guard( m_mutex );
     176      928603 :         return m_lstJob.empty();
     177             :     }
     178             : 
     179        7140 :     bool JobQueue::isCallstackEmpty() const
     180             :     {
     181        7140 :         MutexGuard guard( m_mutex );
     182        7140 :         return m_lstCallstack.empty();
     183             :     }
     184             : 
     185          13 :     bool JobQueue::isBusy() const
     186             :     {
     187          13 :         MutexGuard guard( m_mutex );
     188          13 :         return m_nToDo > 0;
     189             :     }
     190             : 
     191             : 
     192             : }
     193             : 
     194             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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