lfu_rp.hh

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#ifndef __MEM_CACHE_REPLACEMENT_POLICIES_LFU_RP_HH__
#define __MEM_CACHE_REPLACEMENT_POLICIES_LFU_RP_HH__
 
#include "mem/cache/replacement_policies/base.hh"
 
struct LFURPParams;
 
namespace ReplacementPolicy {
 
class LFU : public Base
{
  protected:
    struct LFUReplData : ReplacementData
    {
        unsigned refCount;
 
        LFUReplData() : refCount(0) {}
    };
 
  public:
    typedef LFURPParams Params;
    LFU(const Params &p);
    ~LFU() = default;
 
    void invalidate(const std::shared_ptr<ReplacementData>& replacement_data)
                                                              const override;
 
    void touch(const std::shared_ptr<ReplacementData>& replacement_data) const
                                                                     override;
 
    void reset(const std::shared_ptr<ReplacementData>& replacement_data) const
                                                                     override;
 
    ReplaceableEntry* getVictim(const ReplacementCandidates& candidates) const
                                                                     override;
 
    std::shared_ptr<ReplacementData> instantiateEntry() override;
};
 
} // namespace ReplacementPolicy
 
#endif // __MEM_CACHE_REPLACEMENT_POLICIES_LFU_RP_HH__