MCThreadJob.h

#if !defined(__MCTHREADJOB_H_)
#define __MCTHREADJOB_H_

#ident "@(#)$Id: MCThreadJob.h,v 1.5 2004/12/02 07:05:20 mike Exp $"

/*
 * Copyright Miba Consulting Ltd. (c) 2000-2003
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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 for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#include "mcllib/MCBase.h"
#include "mcllib/MCRefCount.h"
#include "mcllib/MCString.h"

namespace mclpriv
{
    // Forward declaration
    class ThreadPoolImpl;
    class ThreadJobRunnable;
}

namespace mcllib
{
    class MCThreadJob : public MCRefCount, public MCBase
    {
    public:
        enum EPriority {
            THRJOBPRILOW,      
            THRJOBPRINORMAL,   
            THRJOBPRIHIGH,     
            THRJOBPRIURGENT    
        };
        MCThreadJob(const MCString& name = MCString(0),
            mcuint32 minConcurrency = 1,
            mcuint32 maxConcurrency = 1,
            EPriority pri = THRJOBPRINORMAL);

        virtual ~MCThreadJob();
        virtual bool work();

        const MCString& getName() const;
        mcuint32 getMinConcurrency() const;
        mcuint32 getMaxConcurrency() const;
        EPriority getPriority() const;

    protected:
        void addTask();
        void setDone();

    private:
        friend class mclpriv::ThreadPoolImpl;
        friend class mclpriv::ThreadJobRunnable;
        // Run the work loop (calls runOne repeatedly until it returns false)
        void run();
        // Do one task. returns false if done
        bool runOne();
        // Used for scheduling decisions
        void getTaskCounts(mcuint32* pAdd, mcuint32* pDone) const;
    };
};

#endif

---