gem5::TempCacheBlk Class Reference

Special instance of CacheBlk for use with tempBlk that deals with its block address regeneration. More...

#include <cache_blk.hh>

Inheritance diagram for gem5::TempCacheBlk:

Public Member Functions
	TempCacheBlk (unsigned size, TagExtractor ext)
	Creates a temporary cache block, with its own storage.
	TempCacheBlk (const TempCacheBlk &)=delete
TempCacheBlk &	operator= (const TempCacheBlk &)=delete
	~TempCacheBlk ()
void	invalidate () override
	Invalidate the block and clear all state.
void	insert (const KeyType &tag) override
	Insert the block by assigning it a tag and marking it valid.
Addr	getAddr () const
	Get block's address.
CacheBlk &	operator= (const CacheBlk &)=delete
virtual CacheBlk &	operator= (CacheBlk &&other)
	Move assignment operator.
Public Member Functions inherited from gem5::CacheBlk
	CacheBlk ()
	CacheBlk (const CacheBlk &)=delete
CacheBlk &	operator= (const CacheBlk &)=delete
	CacheBlk (const CacheBlk &&)=delete
virtual	~CacheBlk ()
void	setCoherenceBits (unsigned bits)
	Sets the corresponding coherence bits.
void	clearCoherenceBits (unsigned bits)
	Clear the corresponding coherence bits.
bool	isSet (unsigned bits) const
	Checks the given coherence bits are set.
bool	wasPrefetched () const
	Check if this block was the result of a hardware prefetch, yet to be touched.
void	clearPrefetched ()
	Clear the prefetching bit.
void	setPrefetched ()
	Marks this blocks as a recently prefetched block.
Tick	getWhenReady () const
	Get tick at which block's data will be available for access.
void	setWhenReady (const Tick tick)
	Set tick at which block's data will be available for access.
uint32_t	getTaskId () const
	Get the task id associated to this block.
uint32_t	getSrcRequestorId () const
	Get the requestor id associated to this block.
uint64_t	getPartitionId () const
	Getter for _partitionId.
unsigned	getRefCount () const
	Get the number of references to this block since insertion.
void	increaseRefCount ()
	Get the number of references to this block since insertion.
Tick	getAge () const
	Get the block's age, that is, the number of ticks since its insertion.
void	insert (const KeyType &tag, const int src_requestor_ID, const uint32_t task_ID, const uint64_t partition_id)
	Set member variables when a block insertion occurs.
void	trackLoadLocked (PacketPtr pkt)
	Track the fact that a local locked was issued to the block.
void	clearLoadLocks (const RequestPtr &req)
	Clear the any load lock that intersect the request, and is from a different context.
std::string	print () const override
	Pretty-print tag, set and way, and interpret state bits to readable form including mapping to a MOESI state.
bool	checkWrite (PacketPtr pkt)
	Handle interaction of load-locked operations and stores.
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.
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.

Private Attributes
Addr	_addr
	Copy of the block's address, used to regenerate tempBlock's address.

Additional Inherited Members
Public Types inherited from gem5::CacheBlk
enum	CoherenceBits : unsigned { WritableBit = 0x02 , ReadableBit = 0x04 , DirtyBit = 0x08 , AllBits = 0x0E }
	Cache block's enum listing the supported coherence bits. More...
Public Types inherited from gem5::TaggedEntry
using	KeyType = TaggedTypes::KeyType
using	IndexingPolicy = TaggedIndexingPolicy
using	TagExtractor = std::function< Addr(Addr)>
Public Attributes inherited from gem5::CacheBlk
uint8_t *	data = nullptr
	Contains a copy of the data in this block for easy access.
Tick	whenReady = 0
	Which curTick() will this block be accessible.
Public Attributes inherited from gem5::ReplaceableEntry
std::shared_ptr< replacement_policy::ReplacementData >	replacementData
	Replacement data associated to this entry.
Protected Member Functions inherited from gem5::CacheBlk
void	setTaskId (const uint32_t task_id)
	Set the task id value.
void	setSrcRequestorId (const uint32_t id)
	Set the source requestor id.
void	setPartitionId (const uint64_t partitionId)
	Setter for _partitionId.
void	setRefCount (const unsigned count)
	Set the number of references to this block since insertion.
void	setTickInserted ()
	Set the current tick as this block's insertion tick.
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::CacheBlk
std::list< Lock >	lockList
	List of thread contexts that have performed a load-locked (LL) on the block since the last store.
unsigned	coherence = 0
	The current coherence status of this block.
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

Special instance of CacheBlk for use with tempBlk that deals with its block address regeneration.

See also

Cache

Definition at line 516 of file cache_blk.hh.

Constructor & Destructor Documentation

TempCacheBlk() [1/2]

gem5::TempCacheBlk::TempCacheBlk ( unsigned  size, TagExtractor  ext  )

inline

Creates a temporary cache block, with its own storage.

Parameters

size	The size (in bytes) of this cache block.

Definition at line 529 of file cache_blk.hh.

References gem5::CacheBlk::data, gem5::ArmISA::ext, and gem5::TaggedEntry::registerTagExtractor().

TempCacheBlk() [2/2]

gem5::TempCacheBlk::TempCacheBlk ( const TempCacheBlk &  )

delete

~TempCacheBlk()

gem5::TempCacheBlk::~TempCacheBlk ( )

inline

Definition at line 537 of file cache_blk.hh.

References gem5::CacheBlk::data.

Member Function Documentation

getAddr()

Addr gem5::TempCacheBlk::getAddr ( ) const

inline

Get block's address.

Returns

addr Address value.

Definition at line 560 of file cache_blk.hh.

References _addr.

Referenced by gem5::BaseCache::regenerateBlkAddr().

insert()

void gem5::TempCacheBlk::insert ( const KeyType &  key )

inlineoverridevirtual

Insert the block by assigning it a tag and marking it valid.

Touches block if it hadn't been touched previously.

Parameters

tag	The tag value.

Reimplemented from gem5::CacheBlk.

Definition at line 549 of file cache_blk.hh.

References _addr, gem5::TaggedTypes::KeyType::address, and gem5::CacheBlk::insert().

Referenced by gem5::BaseCache::handleFill().

invalidate()

void gem5::TempCacheBlk::invalidate ( )

inlineoverridevirtual

Invalidate the block and clear all state.

Reimplemented from gem5::CacheBlk.

Definition at line 542 of file cache_blk.hh.

References _addr, gem5::CacheBlk::invalidate(), and gem5::MaxAddr.

Referenced by gem5::BaseCache::invalidateBlock().

operator=() [1/3]

virtual CacheBlk & gem5::CacheBlk::operator= ( CacheBlk &&  other )

inlinevirtual

Move assignment operator.

This should only be used to move an existing valid entry into an invalid one, not to create a new entry. In the end the valid entry will become invalid, and the invalid, valid. All location related variables will remain the same, that is, an entry cannot move its data, just its metadata contents.

Reimplemented from gem5::CacheBlk.

Definition at line 173 of file cache_blk.hh.

operator=() [2/3]

CacheBlk & gem5::CacheBlk::operator= ( const CacheBlk &  )

delete

operator=() [3/3]

TempCacheBlk & gem5::TempCacheBlk::operator= ( const TempCacheBlk &  )

delete

Member Data Documentation

_addr

Addr gem5::TempCacheBlk::_addr

private

Copy of the block's address, used to regenerate tempBlock's address.

Definition at line 522 of file cache_blk.hh.

Referenced by getAddr(), insert(), and invalidate().

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

• mem/cache/cache_blk.hh