queue_entry.hh

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/*
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 * Authors: Erik Hallnor
 *          Andreas Hansson
 */

#ifndef __MEM_CACHE_QUEUE_ENTRY_HH__
#define __MEM_CACHE_QUEUE_ENTRY_HH__

#include "base/types.hh"
#include "mem/packet.hh"

class BaseCache;

class QueueEntry : public Packet::SenderState
{

    template <class Entry>
    friend class Queue;

  protected:

    Tick readyTime;

    bool _isUncacheable;

  public:
    class Target {
      public:
        const Tick recvTime;  
        const Tick readyTime; 
        const Counter order;  
        const PacketPtr pkt;  

        Target(PacketPtr _pkt, Tick ready_time, Counter _order)
            : recvTime(curTick()), readyTime(ready_time), order(_order),
              pkt(_pkt)
        {}
    };

    bool inService;

    Counter order;

    Addr blkAddr;

    unsigned blkSize;

    bool isSecure;

    QueueEntry()
        : readyTime(0), _isUncacheable(false),
          inService(false), order(0), blkAddr(0), blkSize(0), isSecure(false)
    {}

    bool isUncacheable() const { return _isUncacheable; }

    virtual bool matchBlockAddr(const Addr addr, const bool is_secure)
                                                            const = 0;

    virtual bool matchBlockAddr(const PacketPtr pkt) const = 0;

    virtual bool conflictAddr(const QueueEntry* entry) const = 0;

    virtual bool sendPacket(BaseCache &cache) = 0;

    virtual Target* getTarget() = 0;
};

#endif // __MEM_CACHE_QUEUE_ENTRY_HH__