362d4f0cd4
It appears that the C++ standard allows overriding destructors to be marked "override," but at least some MSVC versions complain about it, so at least make sure such destructors are explicitly marked "virtual." Change-Id: I0e1cafa7584fd16ebdce61f569eae2373a71b0a1
155 lines
4.7 KiB
C++
155 lines
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SW_SOURCE_CORE_INC_THREADMANAGER_HXX
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#define INCLUDED_SW_SOURCE_CORE_INC_THREADMANAGER_HXX
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#include <ithreadlistenerowner.hxx>
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#include <vcl/timer.hxx>
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#include <osl/mutex.hxx>
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#include <osl/interlck.h>
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#include <rtl/ref.hxx>
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#include <deque>
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#include <list>
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#include <cppuhelper/weak.hxx>
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#include "com/sun/star/util/XJobManager.hpp"
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#include <observablethread.hxx>
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#include <cancellablejob.hxx>
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#include <threadlistener.hxx>
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#include <boost/shared_ptr.hpp>
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#include <boost/weak_ptr.hpp>
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/** class to manage threads
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OD 2007-01-29 #i73788#
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An instance of this class takes care of the starting of threads.
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It assures that not more than <mnStartedSize> threads
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are started.
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*/
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class ThreadManager : public IThreadListenerOwner
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{
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public:
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explicit ThreadManager( ::com::sun::star::uno::Reference< ::com::sun::star::util::XJobManager >& rThreadJoiner );
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virtual ~ThreadManager();
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// --> IThreadListenerOwner
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virtual boost::weak_ptr< IFinishedThreadListener > GetThreadListenerWeakRef() SAL_OVERRIDE;
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virtual void NotifyAboutFinishedThread( const oslInterlockedCount nThreadID ) SAL_OVERRIDE;
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/** initialization
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IMPORTANT NOTE: Needs to be called directly after construction
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*/
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void Init();
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/** add thread to the thread manager and taking ownership for the thread
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@return unique ID for added thread
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*/
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oslInterlockedCount AddThread(
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const ::rtl::Reference< ObservableThread >& rThread );
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void RemoveThread( const oslInterlockedCount nThreadID,
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const bool bThreadFinished = false );
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DECL_LINK( TryToStartNewThread, void* );
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/** suspend the starting of threads
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Suspending the starting of further threads is sensible during the
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destruction of a Writer document.
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*/
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inline void SuspendStartingOfThreads()
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{
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osl::MutexGuard aGuard(maMutex);
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mbStartingOfThreadsSuspended = true;
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}
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/** continues the starting of threads after it has been suspended
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*/
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void ResumeStartingOfThreads();
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inline bool StartingOfThreadsSuspended()
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{
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osl::MutexGuard aGuard(maMutex);
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return mbStartingOfThreadsSuspended;
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}
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struct tThreadData
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{
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oslInterlockedCount nThreadID;
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::rtl::Reference< ObservableThread > pThread;
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com::sun::star::uno::Reference< com::sun::star::util::XCancellable > aJob;
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tThreadData()
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: nThreadID( 0 ),
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pThread( 0 ),
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aJob()
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{}
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};
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private:
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static const std::deque< tThreadData >::size_type mnStartedSize;
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osl::Mutex maMutex;
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::com::sun::star::uno::WeakReference< ::com::sun::star::util::XJobManager > mrThreadJoiner;
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boost::shared_ptr< ThreadListener > mpThreadListener;
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oslInterlockedCount mnThreadIDCounter;
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std::deque< tThreadData > maWaitingForStartThreads;
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std::deque< tThreadData > maStartedThreads;
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Timer maStartNewThreadTimer;
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bool mbStartingOfThreadsSuspended;
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struct ThreadPred
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{
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oslInterlockedCount mnThreadID;
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explicit ThreadPred( oslInterlockedCount nThreadID )
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: mnThreadID( nThreadID )
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{}
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bool operator() ( const tThreadData& rThreadData ) const
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{
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return rThreadData.nThreadID == mnThreadID;
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}
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};
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inline oslInterlockedCount RetrieveNewThreadID()
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{
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return osl_atomic_increment( &mnThreadIDCounter );
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}
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bool StartWaitingThread();
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bool StartThread( const tThreadData& aThreadData );
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};
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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