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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: threadmanager.hxx,v $
* $Revision: 1.3 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#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, Timer* );
/** 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_incrementInterlockedCount( &mnThreadIDCounter );
}
bool StartWaitingThread();
bool StartThread( const tThreadData& aThreadData );
};
#endif
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