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