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lru_rp.hh
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1 
35 #ifndef __MEM_CACHE_REPLACEMENT_POLICIES_LRU_RP_HH__
36 #define __MEM_CACHE_REPLACEMENT_POLICIES_LRU_RP_HH__
37 
38 #include "mem/cache/replacement_policies/base.hh"
39 
40 struct LRURPParams;
41 
42 namespace ReplacementPolicy {
43 
44 class LRU : public Base
45 {
46  protected:
48  struct LRUReplData : ReplacementData
49  {
51  Tick lastTouchTick;
52 
56  LRUReplData() : lastTouchTick(0) {}
57  };
58 
59  public:
60  typedef LRURPParams Params;
61  LRU(const Params &p);
62  ~LRU() = default;
63 
70  void invalidate(const std::shared_ptr<ReplacementData>& replacement_data)
71  const override;
72 
79  void touch(const std::shared_ptr<ReplacementData>& replacement_data) const
80  override;
81 
88  void reset(const std::shared_ptr<ReplacementData>& replacement_data) const
89  override;
90 
97  ReplaceableEntry* getVictim(const ReplacementCandidates& candidates) const
98  override;
99 
105  std::shared_ptr<ReplacementData> instantiateEntry() override;
106 };
107 
108 } // namespace ReplacementPolicy
109 
110 #endif // __MEM_CACHE_REPLACEMENT_POLICIES_LRU_RP_HH__
ReplaceableEntry
A replaceable entry is a basic entry in a 2d table-like structure that needs to have replacement func...
Definition: replaceable_entry.hh:57
ReplacementPolicy::LRU::LRUReplData
LRU-specific implementation of replacement data.
Definition: lru_rp.hh:48
ReplacementPolicy::LRU::~LRU
~LRU()=default
ReplacementPolicy::LRU::LRUReplData::LRUReplData
LRUReplData()
Default constructor.
Definition: lru_rp.hh:56
ReplacementPolicy::LRU::touch
void touch(const std::shared_ptr< ReplacementData > &replacement_data) const override
Touch an entry to update its replacement data.
Definition: lru_rp.cc:54
Tick
uint64_t Tick
Tick count type.
Definition: types.hh:59
std::vector
STL vector class.
Definition: stl.hh:37
ReplacementPolicy::LRU::instantiateEntry
std::shared_ptr< ReplacementData > instantiateEntry() override
Instantiate a replacement data entry.
Definition: lru_rp.cc:91
ReplacementPolicy
Copyright (c) 2018-2020 Inria All rights reserved.
Definition: stride.hh:64
ReplacementPolicy::ReplacementData
The replacement data needed by replacement policies.
Definition: replaceable_entry.hh:43
ReplacementPolicy::Base::Params
BaseReplacementPolicyParams Params
Definition: base.hh:51
ReplacementPolicy::LRU::Params
LRURPParams Params
Definition: lru_rp.hh:60
ReplacementPolicy::LRU::getVictim
ReplaceableEntry * getVictim(const ReplacementCandidates &candidates) const override
Find replacement victim using LRU timestamps.
Definition: lru_rp.cc:70
ReplacementPolicy::LRU::reset
void reset(const std::shared_ptr< ReplacementData > &replacement_data) const override
Reset replacement data.
Definition: lru_rp.cc:62
ReplacementPolicy::Base
A common base class of cache replacement policy objects.
Definition: base.hh:48
base.hh
ReplacementPolicy::LRU::invalidate
void invalidate(const std::shared_ptr< ReplacementData > &replacement_data) const override
Invalidate replacement data to set it as the next probable victim.
Definition: lru_rp.cc:45
ReplacementPolicy::LRU
Definition: lru_rp.hh:44
MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:323
ReplacementPolicy::LRU::LRU
LRU(const Params &p)
Definition: lru_rp.cc:39
ReplacementPolicy::LRU::LRUReplData::lastTouchTick
Tick lastTouchTick
Tick on which the entry was last touched.
Definition: lru_rp.hh:51
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