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lfu_rp.hh
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1 
37 #ifndef __MEM_CACHE_REPLACEMENT_POLICIES_LFU_RP_HH__
38 #define __MEM_CACHE_REPLACEMENT_POLICIES_LFU_RP_HH__
39 
40 #include "mem/cache/replacement_policies/base.hh"
41 
42 namespace gem5
43 {
44 
45 struct LFURPParams;
46 
47 namespace replacement_policy
48 {
49 
50 class LFU : public Base
51 {
52  protected:
54  struct LFUReplData : ReplacementData
55  {
57  unsigned refCount;
58 
62  LFUReplData() : refCount(0) {}
63  };
64 
65  public:
66  typedef LFURPParams Params;
67  LFU(const Params &p);
68  ~LFU() = default;
69 
76  void invalidate(const std::shared_ptr<ReplacementData>& replacement_data)
77  override;
78 
85  void touch(const std::shared_ptr<ReplacementData>& replacement_data) const
86  override;
87 
94  void reset(const std::shared_ptr<ReplacementData>& replacement_data) const
95  override;
96 
103  ReplaceableEntry* getVictim(const ReplacementCandidates& candidates) const
104  override;
105 
111  std::shared_ptr<ReplacementData> instantiateEntry() override;
112 };
113 
114 } // namespace replacement_policy
115 } // namespace gem5
116 
117 #endif // __MEM_CACHE_REPLACEMENT_POLICIES_LFU_RP_HH__
gem5::replacement_policy::LFU::Params
LFURPParams Params
Definition: lfu_rp.hh:66
gem5::replacement_policy::Base::Params
BaseReplacementPolicyParams Params
Definition: base.hh:57
gem5::replacement_policy::LFU::invalidate
void invalidate(const std::shared_ptr< ReplacementData > &replacement_data) override
Invalidate replacement data to set it as the next probable victim.
Definition: lfu_rp.cc:48
gem5::replacement_policy::LFU
Definition: lfu_rp.hh:50
gem5::replacement_policy::LFU::instantiateEntry
std::shared_ptr< ReplacementData > instantiateEntry() override
Instantiate a replacement data entry.
Definition: lfu_rp.cc:90
std::vector
STL vector class.
Definition: stl.hh:37
gem5::replacement_policy::LFU::reset
void reset(const std::shared_ptr< ReplacementData > &replacement_data) const override
Reset replacement data.
Definition: lfu_rp.cc:62
gem5::replacement_policy::LFU::LFU
LFU(const Params &p)
Definition: lfu_rp.cc:42
gem5::replacement_policy::LFU::LFUReplData::refCount
unsigned refCount
Number of references to this entry since it was reset.
Definition: lfu_rp.hh:57
gem5::replacement_policy::ReplacementData
The replacement data needed by replacement policies.
Definition: replaceable_entry.hh:48
gem5::VegaISA::p
Bitfield< 54 > p
Definition: pagetable.hh:70
gem5::replacement_policy::LFU::~LFU
~LFU()=default
gem5::replacement_policy::LFU::getVictim
ReplaceableEntry * getVictim(const ReplacementCandidates &candidates) const override
Find replacement victim using reference frequency.
Definition: lfu_rp.cc:69
gem5::replacement_policy::Base
A common base class of cache replacement policy objects.
Definition: base.hh:54
base.hh
gem5::replacement_policy::LFU::LFUReplData::LFUReplData
LFUReplData()
Default constructor.
Definition: lfu_rp.hh:62
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::LFU::LFUReplData
LFU-specific implementation of replacement data.
Definition: lfu_rp.hh:54
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: gpu_translation_state.hh:37
gem5::replacement_policy::LFU::touch
void touch(const std::shared_ptr< ReplacementData > &replacement_data) const override
Touch an entry to update its replacement data.
Definition: lfu_rp.cc:55
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