A superblock is composed of sub-blocks, and each sub-block has information regarding its superblock and a pointer to its superblock tag. More...

#include <super_blk.hh>

Inheritance diagram for CompressionBlk:

Public Member Functions
	CompressionBlk ()

	CompressionBlk (const CompressionBlk &)=delete

CompressionBlk &	operator= (const CompressionBlk &)=delete

	~CompressionBlk ()

bool	isCompressed () const
	Check if this block holds compressed data. More...

void	setCompressed ()
	Set compression bit. More...

void	setUncompressed ()
	Clear compression bit. More...

std::size_t	getSizeBits () const

void	setSizeBits (const std::size_t size)
	Set size, in bits, of this compressed block's data. More...

Cycles	getDecompressionLatency () const
	Get number of cycles needed to decompress this block. More...

void	setDecompressionLatency (const Cycles lat)
	Set number of cycles needed to decompress this block. More...

std::string	print () const override
	Pretty-print sector offset and other CacheBlk information. More...

Public Member Functions inherited from SectorSubBlk
	SectorSubBlk ()

	SectorSubBlk (const SectorSubBlk &)=delete

SectorSubBlk &	operator= (const SectorSubBlk &)=delete

	~SectorSubBlk ()

void	setSectorBlock (SectorBlk *sector_blk)
	Set sector block associated to this block. More...

const SectorBlk *	getSectorBlock () const
	Get sector block associated to this block. More...

void	setSectorOffset (const int sector_offset)
	Set offset of this sub-block within the sector. More...

int	getSectorOffset () const
	Get offset of this sub-block within the sector. More...

Addr	getTag () const
	Get tag associated to this block. More...

void	setValid () override
	Set valid bit and inform sector block. More...

void	setSecure () override
	Set secure bit and inform sector block. More...

void	invalidate () override
	Invalidate the block and inform sector block. More...

void	insert (const Addr tag, const bool is_secure, const int src_requestor_ID, const uint32_t task_ID) override
	Set member variables when a block insertion occurs. More...

Public Member Functions inherited from CacheBlk
	CacheBlk ()

	CacheBlk (const CacheBlk &)=delete

CacheBlk &	operator= (const CacheBlk &)=delete

virtual	~CacheBlk ()

bool	isWritable () const
	Checks the write permissions of this block. More...

bool	isReadable () const
	Checks the read permissions of this block. More...

bool	isValid () const
	Checks that a block is valid. More...

bool	isDirty () const
	Check to see if a block has been written. More...

bool	wasPrefetched () const
	Check if this block was the result of a hardware prefetch, yet to be touched. More...

bool	isSecure () const
	Check if this block holds data from the secure memory space. More...

Tick	getWhenReady () const
	Get tick at which block's data will be available for access. More...

void	setWhenReady (const Tick tick)
	Set tick at which block's data will be available for access. More...

void	trackLoadLocked (PacketPtr pkt)
	Track the fact that a local locked was issued to the block. More...

void	clearLoadLocks (const RequestPtr &req)
	Clear the any load lock that intersect the request, and is from a different context. More...

bool	checkWrite (PacketPtr pkt)
	Handle interaction of load-locked operations and stores. More...

Public Member Functions inherited from ReplaceableEntry
	ReplaceableEntry ()=default

virtual	~ReplaceableEntry ()=default

virtual void	setPosition (const uint32_t set, const uint32_t way)
	Set both the set and way. More...

uint32_t	getSet () const
	Get set number. More...

uint32_t	getWay () const
	Get way number. More...

Private Attributes
std::size_t	_size
	Set size, in bits, of this compressed block's data. More...

Cycles	_decompressionLatency
	Number of cycles needed to decompress this block. More...

Additional Inherited Members
Public Types inherited from CacheBlk
typedef unsigned	State
	block state: OR of CacheBlkStatusBit More...

Public Attributes inherited from CacheBlk
uint32_t	task_id
	Task Id associated with this block. More...

Addr	tag
	Data block tag value. More...

uint8_t *	data
	Contains a copy of the data in this block for easy access. More...

State	status
	The current status of this block. More...

Tick	whenReady
	Which curTick() will this block be accessible. More...

unsigned	refCount
	Number of references to this block since it was brought in. More...

int	srcRequestorId
	holds the source requestor ID for this block. More...

Tick	tickInserted
	Tick on which the block was inserted in the cache. More...

Public Attributes inherited from ReplaceableEntry
std::shared_ptr< ReplacementData >	replacementData
	Replacement data associated to this entry. More...

Protected Attributes inherited from SectorSubBlk
SectorBlk *	_sectorBlk
	Sector block associated to this block. More...

int	_sectorOffset
	The offset of this sub-block in the sector. More...

Protected Attributes inherited from CacheBlk
std::list< Lock >	lockList
	List of thread contexts that have performed a load-locked (LL) on the block since the last store. More...

Protected Attributes inherited from ReplaceableEntry
uint32_t	_set
	Set to which this entry belongs. More...

uint32_t	_way
	Way (relative position within the set) to which this entry belongs. More...

Detailed Description

A superblock is composed of sub-blocks, and each sub-block has information regarding its superblock and a pointer to its superblock tag.

A superblock can be seen as a variation of a sector block, and therefore we use a sector nomenclature.

Definition at line 48 of file super_blk.hh.

Constructor & Destructor Documentation

◆ CompressionBlk() [1/2]

CompressionBlk::CompressionBlk ( )

Definition at line 39 of file super_blk.cc.

◆ CompressionBlk() [2/2]

CompressionBlk::CompressionBlk ( const CompressionBlk & )

delete

◆ ~CompressionBlk()

CompressionBlk::~CompressionBlk ( )

inline

Definition at line 66 of file super_blk.hh.

Member Function Documentation

◆ getDecompressionLatency()

Cycles CompressionBlk::getDecompressionLatency ( ) const

Get number of cycles needed to decompress this block.

Returns: Decompression latency.

Definition at line 75 of file super_blk.cc.

References _decompressionLatency.

Referenced by Compressor::Base::getDecompressionLatency(), and print().

◆ getSizeBits()

std::size_t CompressionBlk::getSizeBits ( ) const

Definition at line 63 of file super_blk.cc.

References _size.

Referenced by CompressedTags::insertBlock(), print(), and BaseCache::updateCompressionData().

◆ isCompressed()

bool CompressionBlk::isCompressed ( ) const

Check if this block holds compressed data.

Returns: True if the block holds compressed data.

Definition at line 45 of file super_blk.cc.

References BlkCompressed, and CacheBlk::status.

Referenced by Compressor::Base::getDecompressionLatency(), print(), and BaseCache::updateCompressionData().

◆ operator=()

CompressionBlk& CompressionBlk::operator= ( const CompressionBlk & )

delete

◆ print()

std::string CompressionBlk::print ( ) const

overridevirtual

Pretty-print sector offset and other CacheBlk information.

Returns: string with basic state information

Reimplemented from SectorSubBlk.

Definition at line 87 of file super_blk.cc.

References csprintf(), getDecompressionLatency(), getSizeBits(), isCompressed(), and SectorSubBlk::print().

Referenced by Compressor::Base::getDecompressionLatency().

◆ setCompressed()

void CompressionBlk::setCompressed ( )

Set compression bit.

Definition at line 51 of file super_blk.cc.

References BlkCompressed, and CacheBlk::status.

Referenced by CompressedTags::insertBlock(), and BaseCache::updateCompressionData().

◆ setDecompressionLatency()

void CompressionBlk::setDecompressionLatency ( const Cycles lat )

Set number of cycles needed to decompress this block.

Parameters

Decompression latency.

Definition at line 81 of file super_blk.cc.

References _decompressionLatency.

Referenced by BaseCache::updateCompressionData().

◆ setSizeBits()

void CompressionBlk::setSizeBits ( const std::size_t size )

Set size, in bits, of this compressed block's data.

Parameters

The	compressed size.

Definition at line 69 of file super_blk.cc.

References _size.

Referenced by BaseCache::updateCompressionData().

◆ setUncompressed()

void CompressionBlk::setUncompressed ( )

Clear compression bit.

Definition at line 57 of file super_blk.cc.

References BlkCompressed, and CacheBlk::status.

Referenced by CompressedTags::insertBlock(), and BaseCache::updateCompressionData().

Member Data Documentation

◆ _decompressionLatency

Cycles CompressionBlk::_decompressionLatency

private

Number of cycles needed to decompress this block.

We store it to avoid doing decompressions.

Definition at line 60 of file super_blk.hh.

Referenced by getDecompressionLatency(), and setDecompressionLatency().

◆ _size

std::size_t CompressionBlk::_size

private

Set size, in bits, of this compressed block's data.

Definition at line 54 of file super_blk.hh.

Referenced by getSizeBits(), and setSizeBits().

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

mem/cache/tags/super_blk.hh
mem/cache/tags/super_blk.cc

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ CompressionBlk() [1/2]

◆ CompressionBlk() [2/2]

◆ ~CompressionBlk()

Member Function Documentation

◆ getDecompressionLatency()

◆ getSizeBits()

◆ isCompressed()

◆ operator=()

◆ print()

◆ setCompressed()

◆ setDecompressionLatency()

◆ setSizeBits()

◆ setUncompressed()

Member Data Documentation

◆ _decompressionLatency

◆ _size