random_rp.hh

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#ifndef __MEM_CACHE_REPLACEMENT_POLICIES_RANDOM_RP_HH__
#define __MEM_CACHE_REPLACEMENT_POLICIES_RANDOM_RP_HH__
 
#include "base/random.hh"
#include "mem/cache/replacement_policies/base.hh"
 
namespace gem5
{
 
struct RandomRPParams;
 
namespace replacement_policy
{
 
class Random : public Base
{
  protected:
    mutable gem5::Random::RandomPtr rng = gem5::Random::genRandom();

    struct RandomReplData : ReplacementData
    {
        bool valid;

        RandomReplData() : valid(false) {}
    };
 
  public:
    typedef RandomRPParams Params;
    Random(const Params &p);
    ~Random() = default;

    void invalidate(const std::shared_ptr<ReplacementData>& replacement_data)
                                                                    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 replacement_policy
} // namespace gem5
 
#endif // __MEM_CACHE_REPLACEMENT_POLICIES_RANDOM_RP_HH__