LCOV - code coverage report
Current view: top level - cppu/source/threadpool - jobqueue.cxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 0 84 0.0 %
Date: 2014-04-14 Functions: 0 10 0.0 %
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           0 :     JobQueue::JobQueue() :
      30             :         m_nToDo( 0 ),
      31             :         m_bSuspended( false ),
      32           0 :         m_cndWait( osl_createCondition() )
      33             :     {
      34           0 :         osl_resetCondition( m_cndWait );
      35           0 :         m_DisposedCallerAdmin = DisposedCallerAdmin::getInstance();
      36           0 :     }
      37             : 
      38           0 :     JobQueue::~JobQueue()
      39             :     {
      40           0 :         osl_destroyCondition( m_cndWait );
      41           0 :     }
      42             : 
      43             : 
      44           0 :     void JobQueue::add( void *pThreadSpecificData, RequestFun * doRequest )
      45             :     {
      46           0 :         MutexGuard guard( m_mutex );
      47           0 :         Job job = { pThreadSpecificData , doRequest };
      48           0 :         m_lstJob.push_back( job );
      49           0 :         if( ! m_bSuspended )
      50             :         {
      51           0 :             osl_setCondition( m_cndWait );
      52             :         }
      53           0 :         m_nToDo ++;
      54           0 :     }
      55             : 
      56           0 :     void *JobQueue::enter( sal_Int64 nDisposeId , bool bReturnWhenNoJob )
      57             :     {
      58           0 :         void *pReturn = 0;
      59             :         {
      60             :             // synchronize with the dispose calls
      61           0 :             MutexGuard guard( m_mutex );
      62           0 :             if( m_DisposedCallerAdmin->isDisposed( nDisposeId ) )
      63             :             {
      64           0 :                 return 0;
      65             :             }
      66           0 :             m_lstCallstack.push_front( nDisposeId );
      67             :         }
      68             : 
      69             : 
      70             :         while( true )
      71             :         {
      72           0 :             if( bReturnWhenNoJob )
      73             :             {
      74           0 :                 MutexGuard guard( m_mutex );
      75           0 :                 if( m_lstJob.empty() )
      76             :                 {
      77           0 :                     break;
      78           0 :                 }
      79             :             }
      80             : 
      81           0 :             osl_waitCondition( m_cndWait , 0 );
      82             : 
      83           0 :             struct Job job={0,0};
      84             :             {
      85             :                 // synchronize with add and dispose calls
      86           0 :                 MutexGuard guard( m_mutex );
      87             : 
      88           0 :                 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           0 :                 if( ! m_lstJob.empty() )
     102             :                 {
     103           0 :                     job = m_lstJob.front();
     104           0 :                     m_lstJob.pop_front();
     105             :                 }
     106           0 :                 if( m_lstJob.empty()
     107           0 :                     && (m_lstCallstack.empty() || m_lstCallstack.front() != 0) )
     108             :                 {
     109           0 :                     osl_resetCondition( m_cndWait );
     110           0 :                 }
     111             :             }
     112             : 
     113           0 :             if( job.doRequest )
     114             :             {
     115           0 :                 job.doRequest( job.pThreadSpecificData );
     116           0 :                 MutexGuard guard( m_mutex );
     117           0 :                 m_nToDo --;
     118             :             }
     119             :             else
     120             :             {
     121           0 :                 pReturn = job.pThreadSpecificData;
     122           0 :                 MutexGuard guard( m_mutex );
     123           0 :                 m_nToDo --;
     124           0 :                 break;
     125             :             }
     126             :         }
     127             : 
     128             :         {
     129             :             // synchronize with the dispose calls
     130           0 :             MutexGuard guard( m_mutex );
     131           0 :             m_lstCallstack.pop_front();
     132             :         }
     133             : 
     134           0 :         return pReturn;
     135             :     }
     136             : 
     137           0 :     void JobQueue::dispose( sal_Int64 nDisposeId )
     138             :     {
     139           0 :         MutexGuard guard( m_mutex );
     140           0 :         for( CallStackList::iterator ii = m_lstCallstack.begin() ;
     141           0 :              ii != m_lstCallstack.end() ;
     142             :              ++ii )
     143             :         {
     144           0 :             if( (*ii) == nDisposeId )
     145             :             {
     146           0 :                 (*ii) = 0;
     147             :             }
     148             :         }
     149             : 
     150           0 :         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           0 :         }
     155           0 :     }
     156             : 
     157           0 :     void JobQueue::suspend()
     158             :     {
     159           0 :         MutexGuard guard( m_mutex );
     160           0 :         m_bSuspended = true;
     161           0 :     }
     162             : 
     163           0 :     void JobQueue::resume()
     164             :     {
     165           0 :         MutexGuard guard( m_mutex );
     166           0 :         m_bSuspended = false;
     167           0 :         if( ! m_lstJob.empty() )
     168             :         {
     169           0 :             osl_setCondition( m_cndWait );
     170           0 :         }
     171           0 :     }
     172             : 
     173           0 :     bool JobQueue::isEmpty() const
     174             :     {
     175           0 :         MutexGuard guard( m_mutex );
     176           0 :         return m_lstJob.empty();
     177             :     }
     178             : 
     179           0 :     bool JobQueue::isCallstackEmpty() const
     180             :     {
     181           0 :         MutexGuard guard( m_mutex );
     182           0 :         return m_lstCallstack.empty();
     183             :     }
     184             : 
     185           0 :     bool JobQueue::isBusy() const
     186             :     {
     187           0 :         MutexGuard guard( m_mutex );
     188           0 :         return m_nToDo > 0;
     189             :     }
     190             : 
     191             : 
     192             : }
     193             : 
     194             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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