libreoffice/sw/source/core/inc/swthreadmanager.hxx

/* -*- 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 _SWTHREADMANAGER_HXX
#define _SWTHREADMANAGER_HXX

#include <osl/interlck.h>
#include <osl/mutex.hxx>
#include <rtl/ref.hxx>

#include <boost/utility.hpp>
#include <memory>


class ObservableThread;
class ThreadManager;

/** class to manage threads in Writer using a <ThreadManager> instance

    #i73788#
    Conforms the singleton pattern
*/
class SwThreadManager
    : private ::boost::noncopyable
{
    public:

        static SwThreadManager& GetThreadManager();

        static bool ExistsThreadManager();

        // private: don't call!
        SwThreadManager();
        // private: don't call!
        ~SwThreadManager();

        oslInterlockedCount AddThread( const rtl::Reference< ObservableThread >& rThread );

        void RemoveThread( const oslInterlockedCount nThreadID );

        /** suspend the starting of threads

            Suspending the starting of further threads is sensible during the
            destruction of a Writer document.
        */
        void SuspendStartingOfThreads();

        /** continues the starting of threads after it has been suspended
        */
        void ResumeStartingOfThreads();

        bool StartingOfThreadsSuspended();

    private:
        static bool mbThreadManagerInstantiated;

        ::std::auto_ptr<ThreadManager> mpThreadManagerImpl;

};
#endif

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