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71 lines
1.9 KiB
71 lines
1.9 KiB
/*
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* copyright (c) 2006 Boudewijn Rempt
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*
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* This program is free software; you can distribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef KIS_THREAD_POOL_
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#define KIS_THREAD_POOL_
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#include <tqthread.h>
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#include <tqptrlist.h>
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#include <tqmutex.h>
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#include "kis_thread.h"
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/**
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* A thread pool starts executing threads some time after they are added,
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* running a maximum number of threads at one time.
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*
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* The pool takes ownership of the threads and _deletes_ them once they
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* have run. This means that you cannot add getters for important data to
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* threads you feed the threadpool. Instead, post the data using a customevent.
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*/
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class KisThreadPool : public KisThread {
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public:
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virtual ~KisThreadPool();
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static KisThreadPool * instance();
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void enqueue(KisThread * thread);
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void dequeue(KisThread * thread);
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void run();
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KisThreadPool();
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private:
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KisThreadPool(const KisThreadPool&);
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KisThreadPool operator=(const KisThreadPool&);
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TQMutex m_poolMutex;
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int m_numberOfRunningThreads;
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int m_numberOfQueuedThreads;
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int m_maxThreads;
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int m_wait;
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TQPtrList<KisThread> m_threads;
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TQPtrList<KisThread> m_runningThreads;
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TQPtrList<KisThread> m_oldThreads;
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static KisThreadPool * m_singleton;
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};
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#endif
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