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fifo_rp.hh
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1 
36 #ifndef __MEM_CACHE_REPLACEMENT_POLICIES_FIFO_RP_HH__
37 #define __MEM_CACHE_REPLACEMENT_POLICIES_FIFO_RP_HH__
38 
39 #include "base/types.hh"
40 #include "mem/cache/replacement_policies/base.hh"
41 
42 namespace gem5
43 {
44 
45 struct FIFORPParams;
46 
47 namespace replacement_policy
48 {
49 
50 class FIFO : public Base
51 {
52  protected:
54  struct FIFOReplData : ReplacementData
55  {
57  Tick tickInserted;
61  FIFOReplData() : tickInserted(0) {}
62  };
63 
64  private:
69  mutable Tick timeTicks;
70 
71  public:
72  typedef FIFORPParams Params;
73  FIFO(const Params &p);
74  ~FIFO() = default;
75 
82  void invalidate(const std::shared_ptr<ReplacementData>& replacement_data)
83  override;
84 
91  void touch(const std::shared_ptr<ReplacementData>& replacement_data) const
92  override;
93 
100  void reset(const std::shared_ptr<ReplacementData>& replacement_data) const
101  override;
102 
109  ReplaceableEntry* getVictim(const ReplacementCandidates& candidates) const
110  override;
111 
117  std::shared_ptr<ReplacementData> instantiateEntry() override;
118 };
119 
120 } // namespace replacement_policy
121 } // namespace gem5
122 
123 #endif // __MEM_CACHE_REPLACEMENT_POLICIES_FIFO_RP_HH__
gem5::replacement_policy::FIFO::getVictim
ReplaceableEntry * getVictim(const ReplacementCandidates &candidates) const override
Find replacement victim using insertion timestamps.
Definition: fifo_rp.cc:71
gem5::replacement_policy::Base::Params
BaseReplacementPolicyParams Params
Definition: base.hh:57
gem5::replacement_policy::FIFO::FIFOReplData::FIFOReplData
FIFOReplData()
Default constructor.
Definition: fifo_rp.hh:61
gem5::replacement_policy::FIFO::Params
FIFORPParams Params
Definition: fifo_rp.hh:72
gem5::replacement_policy::FIFO::invalidate
void invalidate(const std::shared_ptr< ReplacementData > &replacement_data) override
Invalidate replacement data to set it as the next probable victim.
Definition: fifo_rp.cc:49
std::vector
STL vector class.
Definition: stl.hh:37
gem5::replacement_policy::FIFO::timeTicks
Tick timeTicks
A counter that tracks the number of ticks since being created to avoid a tie.
Definition: fifo_rp.hh:69
gem5::replacement_policy::FIFO::reset
void reset(const std::shared_ptr< ReplacementData > &replacement_data) const override
Reset replacement data.
Definition: fifo_rp.cc:63
gem5::replacement_policy::FIFO::~FIFO
~FIFO()=default
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::Tick
uint64_t Tick
Tick count type.
Definition: types.hh:58
gem5::replacement_policy::FIFO::FIFOReplData::tickInserted
Tick tickInserted
Tick on which the entry was inserted.
Definition: fifo_rp.hh:57
gem5::replacement_policy::Base
A common base class of cache replacement policy objects.
Definition: base.hh:54
base.hh
gem5::replacement_policy::FIFO::touch
void touch(const std::shared_ptr< ReplacementData > &replacement_data) const override
Touch an entry to update its replacement data.
Definition: fifo_rp.cc:57
gem5::replacement_policy::FIFO
Definition: fifo_rp.hh:50
types.hh
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::FIFO::instantiateEntry
std::shared_ptr< ReplacementData > instantiateEntry() override
Instantiate a replacement data entry.
Definition: fifo_rp.cc:92
gem5::replacement_policy::FIFO::FIFOReplData
FIFO-specific implementation of replacement data.
Definition: fifo_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::FIFO::FIFO
FIFO(const Params &p)
Definition: fifo_rp.cc:43
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