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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
42namespace gem5
43{
44
45struct FIFORPParams;
46
47namespace replacement_policy
48{
49
50class 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__
types.hh
Defines global host-dependent types: Counter, Tick, and (indirectly) {int,uint}{8,...
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:63
gem5::replacement_policy::Base
A common base class of cache replacement policy objects.
Definition base.hh:55
gem5::replacement_policy::FIFO
Definition fifo_rp.hh:51
gem5::replacement_policy::FIFO::Params
FIFORPParams Params
Definition fifo_rp.hh:72
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::getVictim
ReplaceableEntry * getVictim(const ReplacementCandidates &candidates) const override
Find replacement victim using insertion timestamps.
Definition fifo_rp.cc:71
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::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
gem5::replacement_policy::FIFO::~FIFO
~FIFO()=default
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
std::vector
STL vector class.
Definition stl.hh:37
base.hh
gem5::MipsISA::p
Bitfield< 0 > p
Definition pra_constants.hh:326
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition gpu_translation_state.hh:38
gem5::Tick
uint64_t Tick
Tick count type.
Definition types.hh:58
gem5::replacement_policy::FIFO::FIFOReplData
FIFO-specific implementation of replacement data.
Definition fifo_rp.hh:55
gem5::replacement_policy::FIFO::FIFOReplData::tickInserted
Tick tickInserted
Tick on which the entry was inserted.
Definition fifo_rp.hh:57
gem5::replacement_policy::FIFO::FIFOReplData::FIFOReplData
FIFOReplData()
Default constructor.
Definition fifo_rp.hh:61
gem5::replacement_policy::ReplacementData
The replacement data needed by replacement policies.
Definition replaceable_entry.hh:48
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