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hashcache.hpp

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 * This file is part of openWNS (open Wireless Network Simulator)
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 * Copyright (C) 2004-2007
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 * Free Software Foundation;
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 * A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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#ifndef __HASHCACHE_HPP
#define __HASHCACHE_HPP

#include <RISE/transceiver/cache/propagationcache.hpp>
#include <RISE/misc/pointerhashmap.hpp>
#include <RISE/transceiver/cache/propcacheentry.hpp>

#include <WNS/Position.hpp>

namespace rise {
    class Station;
    class Antenna;
    class Scenario;
    class Transmitter;
    class ReceiverBase;


    class HashCache : public PropagationCache{
    public:
        explicit HashCache(ReceiverBase* r);
        virtual ~HashCache();
        wns::Ratio getLoss(Transmitter* t, double freq);
        void invalidatePropagationEntries(Transmitter* t);
        void invalidatePropagationEntries();


    private:
        typedef FreqHash<PropCacheEntry> Level2Hash;
        typedef PointerHashMap<Transmitter*, Level2Hash> Level1Hash;
        typedef Level2Hash::iterator FrequencyIterator;
        typedef Level1Hash::iterator TransmitterIterator;

        Level1Hash propHash;
    };
}

#endif //__HASHCACHE_HPP

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