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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 namespace gem5
41 {
42 
43 struct LRURPParams;
44 
45 namespace replacement_policy
46 {
47 
48 class LRU : public Base
49 {
50  protected:
52  struct LRUReplData : ReplacementData
53  {
55  Tick lastTouchTick;
56 
60  LRUReplData() : lastTouchTick(0) {}
61  };
62 
63  public:
64  typedef LRURPParams Params;
65  LRU(const Params &p);
66  ~LRU() = default;
67 
74  void invalidate(const std::shared_ptr<ReplacementData>& replacement_data)
75  override;
76 
83  void touch(const std::shared_ptr<ReplacementData>& replacement_data) const
84  override;
85 
92  void reset(const std::shared_ptr<ReplacementData>& replacement_data) const
93  override;
94 
101  ReplaceableEntry* getVictim(const ReplacementCandidates& candidates) const
102  override;
103 
109  std::shared_ptr<ReplacementData> instantiateEntry() override;
110 };
111 
112 } // namespace replacement_policy
113 } // namespace gem5
114 
115 #endif // __MEM_CACHE_REPLACEMENT_POLICIES_LRU_RP_HH__
gem5::replacement_policy::LRU::instantiateEntry
std::shared_ptr< ReplacementData > instantiateEntry() override
Instantiate a replacement data entry.
Definition: lru_rp.cc:94
gem5::replacement_policy::LRU::LRU
LRU(const Params &p)
Definition: lru_rp.cc:43
gem5::replacement_policy::Base::Params
BaseReplacementPolicyParams Params
Definition: base.hh:57
std::vector
STL vector class.
Definition: stl.hh:37
gem5::replacement_policy::LRU::LRUReplData::lastTouchTick
Tick lastTouchTick
Tick on which the entry was last touched.
Definition: lru_rp.hh:55
gem5::replacement_policy::LRU::~LRU
~LRU()=default
gem5::replacement_policy::ReplacementData
The replacement data needed by replacement policies.
Definition: replaceable_entry.hh:48
gem5::replacement_policy::LRU::LRUReplData::LRUReplData
LRUReplData()
Default constructor.
Definition: lru_rp.hh:60
gem5::VegaISA::p
Bitfield< 54 > p
Definition: pagetable.hh:70
gem5::replacement_policy::LRU::LRUReplData
LRU-specific implementation of replacement data.
Definition: lru_rp.hh:52
gem5::Tick
uint64_t Tick
Tick count type.
Definition: types.hh:58
gem5::replacement_policy::Base
A common base class of cache replacement policy objects.
Definition: base.hh:54
base.hh
gem5::replacement_policy::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:57
gem5::replacement_policy::LRU::reset
void reset(const std::shared_ptr< ReplacementData > &replacement_data) const override
Reset replacement data.
Definition: lru_rp.cc:65
gem5::ReplaceableEntry
A replaceable entry is a basic entry in a 2d table-like structure that needs to have replacement func...
Definition: replaceable_entry.hh:62
gem5::replacement_policy::LRU
Definition: lru_rp.hh:48
gem5::replacement_policy::LRU::getVictim
ReplaceableEntry * getVictim(const ReplacementCandidates &candidates) const override
Find replacement victim using LRU timestamps.
Definition: lru_rp.cc:73
gem5::replacement_policy::LRU::invalidate
void invalidate(const std::shared_ptr< ReplacementData > &replacement_data) override
Invalidate replacement data to set it as the next probable victim.
Definition: lru_rp.cc:49
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: gpu_translation_state.hh:37
gem5::replacement_policy::LRU::Params
LRURPParams Params
Definition: lru_rp.hh:64
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