gem5::prefetch::STeMS::ActiveGenerationTableEntry Struct Reference

Entry data type for the Active Generation Table (AGT) and the Pattern Sequence Table (PST) More...

Inheritance diagram for gem5::prefetch::STeMS::ActiveGenerationTableEntry:

Classes
struct	SequenceEntry
	Sequence entry data type. More...

Public Member Functions
	ActiveGenerationTableEntry (int num_positions, TagExtractor ext)
void	invalidate () override
	Invalidate the block.
void	update (ActiveGenerationTableEntry const &e)
	Update the entry data with an entry from a generation that just ended.
void	addOffset (unsigned int offset)
	Add a new access to the sequence.
Public Member Functions inherited from gem5::TaggedEntry
	TaggedEntry ()
	~TaggedEntry ()=default
void	registerTagExtractor (TagExtractor ext)
virtual bool	isValid () const
	Checks if the entry is valid.
bool	isSecure () const
	Check if this block holds data from the secure memory space.
virtual Addr	getTag () const
	Get tag associated to this block.
bool	match (const KeyType &key) const
	Checks if the given tag information corresponds to this entry's.
virtual void	insert (const KeyType &key)
	Insert the block by assigning it a tag and marking it valid.
std::string	print () const override
	Prints relevant information about this entry.
Public Member Functions inherited from gem5::ReplaceableEntry
	ReplaceableEntry ()
virtual	~ReplaceableEntry ()=default
virtual void	setPosition (const uint32_t set, const uint32_t way)
	Set both the set and way.
uint32_t	getSet () const
	Get set number.
uint32_t	getWay () const
	Get way number.

Public Attributes
Addr	paddress
	Physical address of the spatial region.
Addr	pc
	PC that started this generation.
unsigned int	seqCounter
	Counter to keep track of the interleaving between sequences.
std::vector< SequenceEntry >	sequence
	Sequence of accesses.
Public Attributes inherited from gem5::ReplaceableEntry
std::shared_ptr< replacement_policy::ReplacementData >	replacementData
	Replacement data associated to this entry.

Additional Inherited Members
Public Types inherited from gem5::TaggedEntry
using	KeyType = TaggedTypes::KeyType
using	IndexingPolicy = TaggedIndexingPolicy
using	TagExtractor = std::function<Addr(Addr)>
Protected Member Functions inherited from gem5::TaggedEntry
virtual void	setTag (Addr tag)
	Set tag associated to this block.
virtual void	setSecure ()
	Set secure bit.
void	clearSecure ()
	Clear secure bit.
virtual void	setValid ()
	Set valid bit.
Protected Attributes inherited from gem5::TaggedEntry
TagExtractor	extractTag
	Callback used to extract the tag from the entry.
Protected Attributes inherited from gem5::ReplaceableEntry
uint32_t	_set
	Set to which this entry belongs.
uint32_t	_way
	Way (relative position within the set) to which this entry belongs.

Detailed Description

Entry data type for the Active Generation Table (AGT) and the Pattern Sequence Table (PST)

Definition at line 73 of file spatio_temporal_memory_streaming.hh.

Constructor & Destructor Documentation

ActiveGenerationTableEntry()

gem5::prefetch::STeMS::ActiveGenerationTableEntry::ActiveGenerationTableEntry ( int num_positions, TagExtractor ext )

inline

Definition at line 97 of file spatio_temporal_memory_streaming.hh.

References gem5::ArmISA::ext, paddress, pc, gem5::TaggedEntry::registerTagExtractor(), seqCounter, sequence, and gem5::TaggedEntry::TaggedEntry().

Referenced by update().

Member Function Documentation

addOffset()

void gem5::prefetch::STeMS::ActiveGenerationTableEntry::addOffset ( unsigned int offset )

inline

Add a new access to the sequence.

Parameters

offset

offset in cachelines within the spatial region

Definition at line 136 of file spatio_temporal_memory_streaming.hh.

References gem5::ArmISA::offset, seqCounter, and sequence.

Referenced by gem5::prefetch::STeMS::calculatePrefetch().

invalidate()

void gem5::prefetch::STeMS::ActiveGenerationTableEntry::invalidate ( )

inlineoverridevirtual

Invalidate the block.

Its contents are no longer valid.

Reimplemented from gem5::TaggedEntry.

Definition at line 105 of file spatio_temporal_memory_streaming.hh.

References gem5::TaggedEntry::invalidate(), paddress, pc, seqCounter, and sequence.

update()

void gem5::prefetch::STeMS::ActiveGenerationTableEntry::update ( ActiveGenerationTableEntry const & e )

inline

Update the entry data with an entry from a generation that just ended.

This operation can not be done with the copy constructor, becasuse the TaggedEntry component must not be copied.

Parameters

e	entry which generation has ended

Definition at line 124 of file spatio_temporal_memory_streaming.hh.

References ActiveGenerationTableEntry(), gem5::ArmISA::e, paddress, pc, seqCounter, and sequence.

Member Data Documentation

paddress

Addr gem5::prefetch::STeMS::ActiveGenerationTableEntry::paddress

Physical address of the spatial region.

Definition at line 76 of file spatio_temporal_memory_streaming.hh.

Referenced by ActiveGenerationTableEntry(), gem5::prefetch::STeMS::calculatePrefetch(), invalidate(), and update().

pc

Addr gem5::prefetch::STeMS::ActiveGenerationTableEntry::pc

PC that started this generation.

Definition at line 78 of file spatio_temporal_memory_streaming.hh.

Referenced by ActiveGenerationTableEntry(), gem5::prefetch::STeMS::calculatePrefetch(), invalidate(), and update().

seqCounter

unsigned int gem5::prefetch::STeMS::ActiveGenerationTableEntry::seqCounter

Counter to keep track of the interleaving between sequences.

Definition at line 80 of file spatio_temporal_memory_streaming.hh.

Referenced by ActiveGenerationTableEntry(), addOffset(), invalidate(), and update().

sequence

std::vector<SequenceEntry> gem5::prefetch::STeMS::ActiveGenerationTableEntry::sequence

Sequence of accesses.

Definition at line 95 of file spatio_temporal_memory_streaming.hh.

Referenced by ActiveGenerationTableEntry(), addOffset(), invalidate(), and update().

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The documentation for this struct was generated from the following file:

• mem/cache/prefetch/spatio_temporal_memory_streaming.hh