jthreadpool.h
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/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef J_THREADPOOL_H
#define J_THREADPOOL_H
#include "jrunnable.h"
#include "jthread.h"
#include "jsemaphore.h"
#include "jobject.h"
#include <map>
#include <queue>
#ifdef _WIN32
#include <windows.h>
#else
#endif
namespace jthread{
enum jthreadpool_priority_t {
JTP_GROUP_LOW,
JTP_GROUP_MEDIUM,
JTP_GROUP_HIGH
};
class ThreadPool;
class WorkerThread : public jthread::Thread{
private:
/** \brief */
ThreadPool *_group;
/** \brief */
Runnable *_runnable;
/** \brief */
Semaphore _sem;
/** \brief */
Mutex _mutex;
/** \brief */
bool _is_locked;
public:
/**
* \brief
*
*/
WorkerThread(ThreadPool *group);
/**
* \brief
*
*/
virtual ~WorkerThread();
/**
* \brief
*
*/
bool IsRunning();
/**
* \brief
*
*/
void WaitThread();
/**
* \brief
*
*/
void AttachThread(Runnable *r);
/**
* \brief
*
*/
void DetachThread(Runnable *r);
/**
* \brief
*
*/
virtual void Run();
};
/**
* \brief ThreadPool.
*
* @author Jeff Ferr
*/
class ThreadPool : public virtual jcommon::Object{
private:
/** \brief */
std::vector<WorkerThread *> _threads;
/** \brief */
std::queue<Runnable *> _low_threads;
/** \brief */
std::queue<Runnable *> _medium_threads;
/** \brief */
std::queue<Runnable *> _high_threads;
/** \brief */
Mutex _mutex;
/** \brief */
Semaphore _sem;
/** \brief */
int _max_threads;
public:
/**
* \brief Construtor.
*
*/
ThreadPool(int max_threads);
/**
* \brief Destrutor virtual.
*
*/
virtual ~ThreadPool();
/**
* \brief
*
*/
bool AttachThread(Runnable *r, jthreadpool_priority_t t = JTP_GROUP_MEDIUM);
/**
* \brief
*
*/
bool DetachThread(Runnable *r);
/**
* \brief
*
*/
void Interrupt();
/**
* \brief
*
*/
void WaitForAll();
/**
* \brief Return true if thread is started, false if not.
*
*/
int CountActiveThreads();
/**
* \brief
*
*/
void ReleaseWorkerThread(WorkerThread *t);
};
}
#endif