LCOV - code coverage report
Current view: top level - sw/source/core/docnode - threadmanager.cxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 0 85 0.0 %
Date: 2014-04-14 Functions: 0 13 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             : #include <threadmanager.hxx>
      20             : 
      21             : #include <algorithm>
      22             : 
      23             : using namespace ::com::sun::star;
      24             : 
      25             : /** class to manage threads
      26             : 
      27             :     #i73788#
      28             : */
      29             : const std::deque< ThreadManager::tThreadData >::size_type ThreadManager::mnStartedSize = 10;
      30             : 
      31           0 : ThreadManager::ThreadManager( uno::Reference< util::XJobManager >& rThreadJoiner )
      32             :     : maMutex(),
      33             :       mrThreadJoiner( rThreadJoiner ),
      34             :       mpThreadListener(),
      35             :       mnThreadIDCounter( 0 ),
      36             :       maWaitingForStartThreads(),
      37             :       maStartedThreads(),
      38             :       maStartNewThreadTimer(),
      39           0 :       mbStartingOfThreadsSuspended( false )
      40             : {
      41           0 : }
      42             : 
      43           0 : void ThreadManager::Init()
      44             : {
      45           0 :     mpThreadListener.reset( new ThreadListener( *this ) );
      46             : 
      47           0 :     maStartNewThreadTimer.SetTimeout( 2000 );
      48           0 :     maStartNewThreadTimer.SetTimeoutHdl( LINK( this, ThreadManager, TryToStartNewThread ) );
      49           0 : }
      50             : 
      51           0 : ThreadManager::~ThreadManager()
      52             : {
      53           0 :     maWaitingForStartThreads.clear();
      54           0 :     maStartedThreads.clear();
      55           0 : }
      56             : 
      57           0 : boost::weak_ptr< IFinishedThreadListener > ThreadManager::GetThreadListenerWeakRef()
      58             : {
      59           0 :     return mpThreadListener;
      60             : }
      61             : 
      62           0 : void ThreadManager::NotifyAboutFinishedThread( const oslInterlockedCount nThreadID )
      63             : {
      64           0 :     RemoveThread( nThreadID, true );
      65           0 : }
      66             : 
      67           0 : oslInterlockedCount ThreadManager::AddThread(
      68             :                             const rtl::Reference< ObservableThread >& rThread )
      69             : 
      70             : {
      71           0 :     osl::MutexGuard aGuard(maMutex);
      72             : 
      73             :     // create new thread
      74           0 :     tThreadData aThreadData;
      75           0 :     oslInterlockedCount nNewThreadID( RetrieveNewThreadID() );
      76             :     {
      77           0 :         aThreadData.nThreadID = nNewThreadID;
      78             : 
      79           0 :         aThreadData.pThread = rThread;
      80           0 :         aThreadData.aJob = new CancellableJob( aThreadData.pThread );
      81             : 
      82           0 :         aThreadData.pThread->setPriority( osl_Thread_PriorityBelowNormal );
      83             :         mpThreadListener->ListenToThread( aThreadData.nThreadID,
      84           0 :                                           *(aThreadData.pThread) );
      85             :     }
      86             : 
      87             :     // add thread to manager
      88           0 :     if ( maStartedThreads.size() < mnStartedSize &&
      89           0 :          !StartingOfThreadsSuspended() )
      90             :     {
      91             :         // Try to start thread
      92           0 :         if ( !StartThread( aThreadData ) )
      93             :         {
      94             :             // No success on starting thread
      95             :             // If no more started threads exist, but still threads are waiting,
      96             :             // setup Timer to start thread from waiting ones
      97           0 :             if ( maStartedThreads.empty() && !maWaitingForStartThreads.empty() )
      98             :             {
      99           0 :                 maStartNewThreadTimer.Start();
     100             :             }
     101             :         }
     102             :     }
     103             :     else
     104             :     {
     105             :         // Thread will be started later
     106           0 :         maWaitingForStartThreads.push_back( aThreadData );
     107             :     }
     108             : 
     109           0 :     return nNewThreadID;
     110             : }
     111             : 
     112           0 : void ThreadManager::RemoveThread( const oslInterlockedCount nThreadID,
     113             :                                   const bool bThreadFinished )
     114             : {
     115             :     // --> SAFE ----
     116           0 :     osl::MutexGuard aGuard(maMutex);
     117             : 
     118             :     std::deque< tThreadData >::iterator aIter =
     119             :                 std::find_if( maStartedThreads.begin(), maStartedThreads.end(),
     120           0 :                               ThreadPred( nThreadID ) );
     121             : 
     122           0 :     if ( aIter != maStartedThreads.end() )
     123             :     {
     124           0 :         tThreadData aTmpThreadData( (*aIter) );
     125             : 
     126           0 :         maStartedThreads.erase( aIter );
     127             : 
     128           0 :         if ( bThreadFinished )
     129             :         {
     130             :             // release thread as job from thread joiner instance
     131           0 :             ::com::sun::star::uno::Reference< ::com::sun::star::util::XJobManager > rThreadJoiner( mrThreadJoiner );
     132           0 :             if ( rThreadJoiner.is() )
     133             :             {
     134           0 :                 rThreadJoiner->releaseJob( aTmpThreadData.aJob );
     135             :             }
     136             :             else
     137             :             {
     138             :                 OSL_FAIL( "<ThreadManager::RemoveThread(..)> - ThreadJoiner already gone!" );
     139           0 :             }
     140             :         }
     141             : 
     142             :         // Try to start thread from waiting ones
     143           0 :         TryToStartNewThread( 0 );
     144             :     }
     145             :     else
     146             :     {
     147             :         aIter = std::find_if( maWaitingForStartThreads.begin(),
     148           0 :                               maWaitingForStartThreads.end(), ThreadPred( nThreadID ) );
     149             : 
     150           0 :         if ( aIter != maWaitingForStartThreads.end() )
     151             :         {
     152           0 :             maWaitingForStartThreads.erase( aIter );
     153             :         }
     154           0 :     }
     155             :     // <-- SAFE ----
     156           0 : }
     157             : 
     158           0 : bool ThreadManager::StartWaitingThread()
     159             : {
     160           0 :     if ( !maWaitingForStartThreads.empty() )
     161             :     {
     162           0 :         tThreadData aThreadData( maWaitingForStartThreads.front() );
     163           0 :         maWaitingForStartThreads.pop_front();
     164           0 :         return StartThread( aThreadData );
     165             :     }
     166             :     else
     167             :     {
     168           0 :         return false;
     169             :     }
     170             : }
     171             : 
     172           0 : bool ThreadManager::StartThread( const tThreadData& rThreadData )
     173             : {
     174           0 :     bool bThreadStarted( false );
     175             : 
     176           0 :     if ( rThreadData.pThread->create() )
     177             :     {
     178             :         // start of thread successful.
     179           0 :         bThreadStarted = true;
     180             : 
     181           0 :         maStartedThreads.push_back( rThreadData );
     182             : 
     183             :         // register thread as job at thread joiner instance
     184           0 :         ::com::sun::star::uno::Reference< ::com::sun::star::util::XJobManager > rThreadJoiner( mrThreadJoiner );
     185           0 :         if ( rThreadJoiner.is() )
     186             :         {
     187           0 :             rThreadJoiner->registerJob( rThreadData.aJob );
     188             :         }
     189             :         else
     190             :         {
     191             :             OSL_FAIL( "<ThreadManager::StartThread(..)> - ThreadJoiner already gone!" );
     192           0 :         }
     193             :     }
     194             :     else
     195             :     {
     196             :         // thread couldn't be started.
     197           0 :         maWaitingForStartThreads.push_front( rThreadData );
     198             :     }
     199             : 
     200           0 :     return bThreadStarted;
     201             : }
     202             : 
     203           0 : IMPL_LINK_NOARG(ThreadManager, TryToStartNewThread)
     204             : {
     205           0 :     osl::MutexGuard aGuard(maMutex);
     206             : 
     207           0 :     if ( !StartingOfThreadsSuspended() )
     208             :     {
     209             :         // Try to start thread from waiting ones
     210           0 :         if ( !StartWaitingThread() )
     211             :         {
     212             :             // No success on starting thread
     213             :             // If no more started threads exist, but still threads are waiting,
     214             :             // setup Timer to start thread from waiting ones
     215           0 :             if ( maStartedThreads.empty() && !maWaitingForStartThreads.empty() )
     216             :             {
     217           0 :                 maStartNewThreadTimer.Start();
     218             :             }
     219             :         }
     220             :     }
     221             : 
     222           0 :     return sal_True;
     223             : }
     224             : 
     225           0 : void ThreadManager::ResumeStartingOfThreads()
     226             : {
     227           0 :     osl::MutexGuard aGuard(maMutex);
     228             : 
     229           0 :     mbStartingOfThreadsSuspended = false;
     230             : 
     231           0 :     while ( maStartedThreads.size() < mnStartedSize &&
     232           0 :             !maWaitingForStartThreads.empty() )
     233             :     {
     234           0 :         if ( !StartWaitingThread() )
     235             :         {
     236             :             // No success on starting thread
     237             :             // If no more started threads exist, but still threads are waiting,
     238             :             // setup Timer to start thread from waiting ones
     239           0 :             if ( maStartedThreads.empty() && !maWaitingForStartThreads.empty() )
     240             :             {
     241           0 :                 maStartNewThreadTimer.Start();
     242           0 :                 break;
     243             :             }
     244             :         }
     245           0 :     }
     246           0 : }
     247             : 
     248             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

Generated by: LCOV version 1.10