WeightedLRUPolicy.hh

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/*
 * Copyright (c) 2013-2015 Advanced Micro Devices, Inc.
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 * For use for simulation and test purposes only
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 * Author: Sooraj Puthoor
 */

#ifndef __MEM_RUBY_SYSTEM_WEIGHTEDLRUPOLICY_HH__
#define __MEM_RUBY_SYSTEM_WEIGHTEDLRUPOLICY_HH__

#include "mem/ruby/structures/AbstractReplacementPolicy.hh"
#include "mem/ruby/structures/CacheMemory.hh"
#include "params/WeightedLRUReplacementPolicy.hh"

/* Simple true LRU replacement policy */

class WeightedLRUPolicy : public AbstractReplacementPolicy
{
  public:
    typedef WeightedLRUReplacementPolicyParams Params;
    WeightedLRUPolicy(const Params* p);
    ~WeightedLRUPolicy();

    void touch(int64_t set, int64_t way, Tick time) override;
    void touch(int64_t set, int64_t way, Tick time, int occupancy);
    int64_t getVictim(int64_t set) const override;

    bool useOccupancy() const override { return true; }

    CacheMemory * m_cache;
    int **m_last_occ_ptr;
};

#endif // __MEM_RUBY_SYSTEM_WeightedLRUPolicy_HH__