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DCF.hpp

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/******************************************************************************
 * WiMeMac                                                                    *
 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
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 * Copyright (C) 2004-2011
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 * fax: ++49-241-80-22242
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 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
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 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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#ifndef WIMEMAC_LOWERMAC_TIMING_DCF_HPP
#define WIMEMAC_LOWERMAC_TIMING_DCF_HPP

#include <WIMEMAC/lowerMAC/timing/Backoff.hpp>
#include <WIMEMAC/convergence/IChannelState.hpp>
#include <WIMEMAC/convergence/IRxStartEnd.hpp>
#include <WIMEMAC/drp/IDRPSchedulerServices.hpp>

#include <WNS/ldk/fu/Plain.hpp>
#include <WNS/ldk/Command.hpp>

//  //
namespace wimemac { namespace drp {
        class DRPScheduler;
}}

namespace wimemac { namespace lowerMAC { namespace timing {

    class DCF:
        public wns::ldk::fu::Plain<DCF, wns::ldk::EmptyCommand>,
        public virtual BackoffObserver
    {

    public:

        DCF(wns::ldk::fun::FUN* fun, const wns::pyconfig::View& config);

        virtual
        ~DCF();

        void doSendData(const wns::ldk::CompoundPtr& compound);
        void doOnData(const wns::ldk::CompoundPtr& compound);
        bool doIsAccepting(const wns::ldk::CompoundPtr& compound) const;
        void doWakeup();

        virtual void onFUNCreated();

        void
        registerEOBObserver(BackoffObserver* observer) {backoff.registerEOBObserver(observer);}

        wns::simulator::Time
        backoffFinishedAt() {return backoff.finishedAt();}

        void onDRPStart();
        void onDRPStop();

        void waitingTransmissions(int numTransmissions);

    private:

        virtual void backoffExpired();

        const std::string csName;
        const std::string rxStartEndName;
        const std::string drpSchedulerName;
        const bool backoffDisabled;

        mutable Backoff backoff;

        mutable bool sendNow;

        struct Friends
        {
            wimemac::drp::IDRPSchedulerServices* drpScheduler;
        } friends;

        wns::logger::Logger logger;
    };
} // timing
} // lowerMAC
} // wimemac

#endif // WIMEMAC_LOWERMAC_TIMING_DCF_HPP

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