#include <CacheMemory.hh>

Inheritance diagram for CacheMemory:

Classes
struct	CacheMemoryStats

Public Types
typedef RubyCacheParams	Params

typedef std::shared_ptr< ReplacementPolicy::ReplacementData >	ReplData

Public Types inherited from SimObject
typedef SimObjectParams	Params

Public Member Functions
	CacheMemory (const Params &p)

	~CacheMemory ()

void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected. More...

bool	tryCacheAccess (Addr address, RubyRequestType type, DataBlock *&data_ptr)

bool	testCacheAccess (Addr address, RubyRequestType type, DataBlock *&data_ptr)

bool	isTagPresent (Addr address) const

bool	cacheAvail (Addr address) const

AbstractCacheEntry *	getNullEntry () const

AbstractCacheEntry *	allocate (Addr address, AbstractCacheEntry *new_entry)

void	allocateVoid (Addr address, AbstractCacheEntry *new_entry)

void	deallocate (Addr address)

Addr	cacheProbe (Addr address) const

AbstractCacheEntry *	lookup (Addr address)

const AbstractCacheEntry *	lookup (Addr address) const

Cycles	getTagLatency () const

Cycles	getDataLatency () const

bool	isBlockInvalid (int64_t cache_set, int64_t loc)

bool	isBlockNotBusy (int64_t cache_set, int64_t loc)

void	recordCacheContents (int cntrl, CacheRecorder *tr) const

void	setMRU (Addr address)

void	setMRU (Addr addr, int occupancy)

void	setMRU (AbstractCacheEntry *entry)

int	getReplacementWeight (int64_t set, int64_t loc)

void	setLocked (Addr addr, int context)

void	clearLocked (Addr addr)

void	clearLockedAll (int context)

bool	isLocked (Addr addr, int context)

void	print (std::ostream &out) const

void	printData (std::ostream &out) const

bool	checkResourceAvailable (CacheResourceType res, Addr addr)

void	recordRequestType (CacheRequestType requestType, Addr addr)

void	htmAbortTransaction ()

void	htmCommitTransaction ()

int	getCacheSize () const

int	getCacheAssoc () const

int	getNumBlocks () const

Addr	getAddressAtIdx (int idx) const

void	profileDemandHit ()

void	profileDemandMiss ()

void	profilePrefetchHit ()

void	profilePrefetchMiss ()

Public Member Functions inherited from SimObject
const Params &	params () const

	SimObject (const Params &p)

virtual	~SimObject ()

virtual const std::string	name () const

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint. More...

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint. More...

virtual void	regProbePoints ()
	Register probe points for this object. More...

virtual void	regProbeListeners ()
	Register probe listeners for this object. More...

ProbeManager *	getProbeManager ()
	Get the probe manager for this object. More...

virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index. More...

virtual void	startup ()
	startup() is the final initialization call before simulation. More...

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining. More...

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes. More...

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers. More...

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

Public Member Functions inherited from EventManager
EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick) -1)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers. More...

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)
	Event manger manages events in the event queue. More...

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

Public Member Functions inherited from Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section. More...

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object. More...

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from Drainable
DrainState	drainState () const
	Return the current drain state of an object. More...

virtual void	notifyFork ()
	Notify a child process of a fork. More...

Public Member Functions inherited from Stats::Group
	Group (Group parent, const char name=nullptr)
	Construct a new statistics group. More...

virtual	~Group ()

virtual void	regStats ()
	Callback to set stat parameters. More...

virtual void	resetStats ()
	Callback to reset stats. More...

virtual void	preDumpStats ()
	Callback before stats are dumped. More...

void	addStat (Stats::Info *info)
	Register a stat with this group. More...

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object. More...

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object. More...

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block. More...

const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group. More...

void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block. More...

	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Private Member Functions
int64_t	addressToCacheSet (Addr address) const

int	findTagInSet (int64_t line, Addr tag) const

int	findTagInSetIgnorePermissions (int64_t cacheSet, Addr tag) const

	CacheMemory (const CacheMemory &obj)

CacheMemory &	operator= (const CacheMemory &obj)

Private Attributes
bool	m_is_instruction_only_cache

std::unordered_map< Addr, int >	m_tag_index

std::vector< std::vector< AbstractCacheEntry * > >	m_cache

ReplacementPolicy::Base *	m_replacementPolicy_ptr
	We use the replacement policies from the Classic memory system. More...

BankedArray	dataArray

BankedArray	tagArray

int	m_cache_size

int	m_cache_num_sets

int	m_cache_num_set_bits

int	m_cache_assoc

int	m_start_index_bit

bool	m_resource_stalls

int	m_block_size

std::vector< std::vector< ReplData > >	replacement_data
	We store all the ReplacementData in a 2-dimensional array. More...

bool	m_use_occupancy
	Set to true when using WeightedLRU replacement policy, otherwise, set to false. More...

CacheMemory::CacheMemoryStats	cacheMemoryStats

Additional Inherited Members
Static Public Member Functions inherited from SimObject
static void	serializeAll (CheckpointOut &cp)
	Serialize all SimObjects in the system. More...

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it. More...

Static Public Member Functions inherited from Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section. More...

static void	serializeAll (const std::string &cpt_dir)
	Serializes all the SimObjects. More...

static void	unserializeGlobals (CheckpointIn &cp)

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

virtual void	drainResume ()
	Resume execution after a successful drain. More...

void	signalDrainDone () const
	Signal that an object is drained. More...

Protected Attributes inherited from SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters. More...

Protected Attributes inherited from EventManager
EventQueue *	eventq
	A pointer to this object's event queue. More...

Detailed Description

Definition at line 63 of file CacheMemory.hh.

Member Typedef Documentation

◆ Params

typedef RubyCacheParams CacheMemory::Params

Definition at line 66 of file CacheMemory.hh.

◆ ReplData

typedef std::shared_ptr<ReplacementPolicy::ReplacementData> CacheMemory::ReplData

Definition at line 67 of file CacheMemory.hh.

Constructor & Destructor Documentation

◆ CacheMemory() [1/2]

CacheMemory::CacheMemory ( const Params & p )

Definition at line 63 of file CacheMemory.cc.

References m_block_size, m_cache_assoc, m_cache_size, m_is_instruction_only_cache, m_replacementPolicy_ptr, m_resource_stalls, m_start_index_bit, m_use_occupancy, and MipsISA::p.

◆ ~CacheMemory()

CacheMemory::~CacheMemory ( )

Definition at line 106 of file CacheMemory.cc.

References ArmISA::i, ArmISA::j, m_cache, m_cache_assoc, m_cache_num_sets, and m_replacementPolicy_ptr.

◆ CacheMemory() [2/2]

CacheMemory::CacheMemory ( const CacheMemory & obj )

private

Member Function Documentation

◆ addressToCacheSet()

int64_t CacheMemory::addressToCacheSet ( Addr address ) const

private

Definition at line 119 of file CacheMemory.cc.

References bitSelect(), m_cache_num_set_bits, m_start_index_bit, and makeLineAddress().

Referenced by allocate(), cacheAvail(), cacheProbe(), checkResourceAvailable(), lookup(), and recordRequestType().

◆ allocate()

AbstractCacheEntry * CacheMemory::allocate	(	Addr	address,
		AbstractCacheEntry *	new_entry
	)

Definition at line 262 of file CacheMemory.cc.

References addressToCacheSet(), cacheAvail(), curTick(), DPRINTF, ArmISA::i, isTagPresent(), m_cache, m_cache_assoc, m_replacementPolicy_ptr, m_tag_index, makeLineAddress(), panic, replacement_data, ReplaceableEntry::replacementData, ReplacementPolicy::Base::reset(), and warn_once.

Referenced by allocateVoid().

◆ allocateVoid()

void CacheMemory::allocateVoid	(	Addr	address,
		AbstractCacheEntry *	new_entry
	)

inline

Definition at line 99 of file CacheMemory.hh.

References allocate().

◆ cacheAvail()

bool CacheMemory::cacheAvail ( Addr address ) const

Definition at line 240 of file CacheMemory.cc.

References addressToCacheSet(), ArmISA::i, AbstractCacheEntry::m_Address, m_cache, m_cache_assoc, AbstractCacheEntry::m_Permission, and makeLineAddress().

Referenced by allocate(), and cacheProbe().

◆ cacheProbe()

Addr CacheMemory::cacheProbe ( Addr address ) const

Definition at line 318 of file CacheMemory.cc.

References addressToCacheSet(), cacheAvail(), ArmISA::i, m_cache, m_cache_assoc, m_replacementPolicy_ptr, and makeLineAddress().

◆ checkResourceAvailable()

bool CacheMemory::checkResourceAvailable	(	CacheResourceType	res,
		Addr	addr
	)

Definition at line 632 of file CacheMemory.cc.

References X86ISA::addr, addressToCacheSet(), cacheMemoryStats, dataArray, DPRINTF, m_resource_stalls, CacheMemory::CacheMemoryStats::numDataArrayStalls, CacheMemory::CacheMemoryStats::numTagArrayStalls, panic, tagArray, and BankedArray::tryAccess().

◆ clearLocked()

void CacheMemory::clearLocked ( Addr addr )

Definition at line 481 of file CacheMemory.cc.

References AbstractCacheEntry::clearLocked(), DPRINTF, and lookup().

◆ clearLockedAll()

void CacheMemory::clearLockedAll ( int context )

Definition at line 490 of file CacheMemory.cc.

References AbstractCacheEntry::clearLocked(), DPRINTF, ArmISA::i, AbstractCacheEntry::isLocked(), ArmISA::j, AbstractCacheEntry::m_Address, and m_cache.

Referenced by Sequencer::llscClearLocalMonitor().

◆ deallocate()

void CacheMemory::deallocate ( Addr address )

Definition at line 303 of file CacheMemory.cc.

References DPRINTF, ReplaceableEntry::getSet(), ReplaceableEntry::getWay(), ReplacementPolicy::Base::invalidate(), lookup(), m_cache, m_replacementPolicy_ptr, m_tag_index, and ReplaceableEntry::replacementData.

◆ findTagInSet()

int CacheMemory::findTagInSet	(	int64_t	line,
		Addr	tag
	)		const

private

Definition at line 129 of file CacheMemory.cc.

References m_cache, m_tag_index, and makeLineAddress().

Referenced by lookup().

◆ findTagInSetIgnorePermissions()

int CacheMemory::findTagInSetIgnorePermissions	(	int64_t	cacheSet,
		Addr	tag
	)		const

private

Definition at line 144 of file CacheMemory.cc.

References m_tag_index, and makeLineAddress().

◆ getAddressAtIdx()

Addr CacheMemory::getAddressAtIdx ( int idx ) const

Definition at line 159 of file CacheMemory.cc.

References AbstractCacheEntry::m_Address, m_cache, m_cache_assoc, m_cache_num_sets, and AbstractCacheEntry::m_Permission.

Referenced by VIPERCoalescer::invTCP().

◆ getCacheAssoc()

int CacheMemory::getCacheAssoc ( ) const

inline

Definition at line 152 of file CacheMemory.hh.

References m_cache_assoc.

◆ getCacheSize()

int CacheMemory::getCacheSize ( ) const

inline

Definition at line 151 of file CacheMemory.hh.

References m_cache_size.

◆ getDataLatency()

Cycles CacheMemory::getDataLatency ( ) const

inline

Definition at line 115 of file CacheMemory.hh.

References dataArray, and BankedArray::getLatency().

◆ getNullEntry()

AbstractCacheEntry* CacheMemory::getNullEntry ( ) const

inline

Definition at line 92 of file CacheMemory.hh.

◆ getNumBlocks()

int CacheMemory::getNumBlocks ( ) const

inline

Definition at line 153 of file CacheMemory.hh.

References m_cache_assoc, and m_cache_num_sets.

Referenced by VIPERCoalescer::invTCP().

◆ getReplacementWeight()

int CacheMemory::getReplacementWeight	(	int64_t	set,
		int64_t	loc
	)

Definition at line 394 of file CacheMemory.cc.

References m_cache, m_cache_assoc, and m_cache_num_sets.

◆ getTagLatency()

Cycles CacheMemory::getTagLatency ( ) const

inline

Definition at line 114 of file CacheMemory.hh.

References BankedArray::getLatency(), and tagArray.

◆ htmAbortTransaction()

void CacheMemory::htmAbortTransaction ( )

Definition at line 676 of file CacheMemory.cc.

References cacheMemoryStats, AbstractCacheEntry::clearLocked(), DPRINTF, AbstractCacheEntry::getInHtmReadSet(), AbstractCacheEntry::getInHtmWriteSet(), CacheMemory::CacheMemoryStats::htmTransAbortReadSet, CacheMemory::CacheMemoryStats::htmTransAbortWriteSet, ArmISA::i, AbstractCacheEntry::invalidateEntry(), ArmISA::j, m_cache, Stats::DistBase< Derived, Stor >::sample(), AbstractCacheEntry::setInHtmReadSet(), and AbstractCacheEntry::setInHtmWriteSet().

◆ htmCommitTransaction()

void CacheMemory::htmCommitTransaction ( )

Definition at line 710 of file CacheMemory.cc.

References cacheMemoryStats, AbstractCacheEntry::clearLocked(), DPRINTF, AbstractCacheEntry::getInHtmReadSet(), AbstractCacheEntry::getInHtmWriteSet(), CacheMemory::CacheMemoryStats::htmTransCommitReadSet, CacheMemory::CacheMemoryStats::htmTransCommitWriteSet, ArmISA::i, ArmISA::j, m_cache, Stats::DistBase< Derived, Stor >::sample(), AbstractCacheEntry::setInHtmReadSet(), and AbstractCacheEntry::setInHtmWriteSet().

◆ init()

void CacheMemory::init ( )

virtual

init() is called after all C++ SimObjects have been created and all ports are connected.

Initializations that are independent of unserialization but rely on a fully instantiated and connected SimObject graph should be done here.

Reimplemented from SimObject.

Definition at line 83 of file CacheMemory.cc.

References floorLog2(), RubySystem::getBlockSizeBytes(), ArmISA::i, ReplacementPolicy::Base::instantiateEntry(), ArmISA::j, m_block_size, m_cache, m_cache_assoc, m_cache_num_set_bits, m_cache_num_sets, m_cache_size, m_replacementPolicy_ptr, and replacement_data.

◆ isBlockInvalid()

bool CacheMemory::isBlockInvalid	(	int64_t	cache_set,
		int64_t	loc
	)

Definition at line 662 of file CacheMemory.cc.

References m_cache.

◆ isBlockNotBusy()

bool CacheMemory::isBlockNotBusy	(	int64_t	cache_set,
		int64_t	loc
	)

Definition at line 668 of file CacheMemory.cc.

References m_cache.

◆ isLocked()

bool CacheMemory::isLocked	(	Addr	addr,
		int	context
	)

Definition at line 507 of file CacheMemory.cc.

References DPRINTF, AbstractCacheEntry::isLocked(), lookup(), and AbstractCacheEntry::m_locked.

◆ isTagPresent()

bool CacheMemory::isTagPresent ( Addr address ) const

Definition at line 224 of file CacheMemory.cc.

References DPRINTF, and lookup().

Referenced by allocate().

◆ lookup() [1/2]

AbstractCacheEntry * CacheMemory::lookup ( Addr address )

Definition at line 335 of file CacheMemory.cc.

References addressToCacheSet(), findTagInSet(), m_cache, and makeLineAddress().

Referenced by clearLocked(), deallocate(), isLocked(), isTagPresent(), Sequencer::llscCheckMonitor(), Sequencer::llscClearMonitor(), Sequencer::llscLoadLinked(), Sequencer::llscStoreConditional(), setLocked(), setMRU(), testCacheAccess(), and tryCacheAccess().

◆ lookup() [2/2]

const AbstractCacheEntry * CacheMemory::lookup ( Addr address ) const

Definition at line 346 of file CacheMemory.cc.

References addressToCacheSet(), findTagInSet(), m_cache, and makeLineAddress().

◆ operator=()

CacheMemory& CacheMemory::operator= ( const CacheMemory & obj )

private

◆ print()

void CacheMemory::print ( std::ostream & out ) const

Definition at line 447 of file CacheMemory.cc.

References ArmISA::i, ArmISA::j, m_cache, m_cache_assoc, m_cache_num_sets, and SimObject::name().

Referenced by operator<<().

◆ printData()

void CacheMemory::printData ( std::ostream & out ) const

Definition at line 466 of file CacheMemory.cc.

◆ profileDemandHit()

void CacheMemory::profileDemandHit ( )

Definition at line 740 of file CacheMemory.cc.

References cacheMemoryStats, and CacheMemory::CacheMemoryStats::m_demand_hits.

◆ profileDemandMiss()

void CacheMemory::profileDemandMiss ( )

Definition at line 746 of file CacheMemory.cc.

References cacheMemoryStats, and CacheMemory::CacheMemoryStats::m_demand_misses.

◆ profilePrefetchHit()

void CacheMemory::profilePrefetchHit ( )

Definition at line 752 of file CacheMemory.cc.

References cacheMemoryStats, and CacheMemory::CacheMemoryStats::m_prefetch_hits.

◆ profilePrefetchMiss()

void CacheMemory::profilePrefetchMiss ( )

Definition at line 758 of file CacheMemory.cc.

References cacheMemoryStats, and CacheMemory::CacheMemoryStats::m_prefetch_misses.

◆ recordCacheContents()

void CacheMemory::recordCacheContents	(	int	cntrl,
		CacheRecorder *	tr
	)		const

Definition at line 408 of file CacheMemory.cc.

References CacheRecorder::addRecord(), DPRINTF, ArmISA::i, ArmISA::j, m_cache, m_cache_assoc, m_cache_num_sets, m_is_instruction_only_cache, SimObject::name(), and RiscvISA::perm.

◆ recordRequestType()

void CacheMemory::recordRequestType	(	CacheRequestType	requestType,
		Addr	addr
	)

Definition at line 600 of file CacheMemory.cc.

References X86ISA::addr, addressToCacheSet(), cacheMemoryStats, dataArray, DPRINTF, m_resource_stalls, CacheMemory::CacheMemoryStats::numDataArrayReads, CacheMemory::CacheMemoryStats::numDataArrayWrites, CacheMemory::CacheMemoryStats::numTagArrayReads, CacheMemory::CacheMemoryStats::numTagArrayWrites, BankedArray::reserve(), tagArray, and warn.

◆ setLocked()

void CacheMemory::setLocked	(	Addr	addr,
		int	context
	)

Definition at line 472 of file CacheMemory.cc.

References DPRINTF, lookup(), and AbstractCacheEntry::setLocked().

◆ setMRU() [1/3]

void CacheMemory::setMRU ( AbstractCacheEntry * entry )

Definition at line 367 of file CacheMemory.cc.

References curTick(), m_replacementPolicy_ptr, ReplaceableEntry::replacementData, AbstractCacheEntry::setLastAccess(), and ReplacementPolicy::Base::touch().

◆ setMRU() [2/3]

void CacheMemory::setMRU	(	Addr	addr,
		int	occupancy
	)

Definition at line 375 of file CacheMemory.cc.

References curTick(), lookup(), m_replacementPolicy_ptr, m_use_occupancy, makeLineAddress(), ReplaceableEntry::replacementData, AbstractCacheEntry::setLastAccess(), and ReplacementPolicy::Base::touch().

◆ setMRU() [3/3]

void CacheMemory::setMRU ( Addr address )

Definition at line 357 of file CacheMemory.cc.

References curTick(), lookup(), m_replacementPolicy_ptr, makeLineAddress(), ReplaceableEntry::replacementData, AbstractCacheEntry::setLastAccess(), and ReplacementPolicy::Base::touch().

◆ testCacheAccess()

bool CacheMemory::testCacheAccess	(	Addr	address,
		RubyRequestType	type,
		DataBlock *&	data_ptr
	)

Definition at line 204 of file CacheMemory.cc.

References curTick(), DPRINTF, AbstractCacheEntry::getDataBlk(), lookup(), AbstractCacheEntry::m_Permission, m_replacementPolicy_ptr, ReplaceableEntry::replacementData, AbstractCacheEntry::setLastAccess(), and ReplacementPolicy::Base::touch().

◆ tryCacheAccess()

bool CacheMemory::tryCacheAccess	(	Addr	address,
		RubyRequestType	type,
		DataBlock *&	data_ptr
	)

Definition at line 179 of file CacheMemory.cc.

References curTick(), DPRINTF, AbstractCacheEntry::getDataBlk(), lookup(), AbstractCacheEntry::m_Permission, m_replacementPolicy_ptr, ReplaceableEntry::replacementData, AbstractCacheEntry::setLastAccess(), ReplacementPolicy::Base::touch(), and X86ISA::type.

Member Data Documentation

◆ cacheMemoryStats

CacheMemory::CacheMemoryStats CacheMemory::cacheMemoryStats

private

Referenced by checkResourceAvailable(), htmAbortTransaction(), htmCommitTransaction(), profileDemandHit(), profileDemandMiss(), profilePrefetchHit(), profilePrefetchMiss(), and recordRequestType().

◆ dataArray

BankedArray CacheMemory::dataArray

private

Definition at line 181 of file CacheMemory.hh.

Referenced by checkResourceAvailable(), getDataLatency(), and recordRequestType().

◆ m_block_size

int CacheMemory::m_block_size

private

Definition at line 190 of file CacheMemory.hh.

Referenced by CacheMemory(), and init().

◆ m_cache

std::vector<std::vector<AbstractCacheEntry*> > CacheMemory::m_cache

private

Definition at line 176 of file CacheMemory.hh.

Referenced by allocate(), cacheAvail(), cacheProbe(), clearLockedAll(), deallocate(), findTagInSet(), getAddressAtIdx(), getReplacementWeight(), htmAbortTransaction(), htmCommitTransaction(), init(), isBlockInvalid(), isBlockNotBusy(), lookup(), print(), recordCacheContents(), and ~CacheMemory().

◆ m_cache_assoc

int CacheMemory::m_cache_assoc

private

Definition at line 187 of file CacheMemory.hh.

Referenced by allocate(), cacheAvail(), CacheMemory(), cacheProbe(), getAddressAtIdx(), getCacheAssoc(), getNumBlocks(), getReplacementWeight(), init(), print(), recordCacheContents(), and ~CacheMemory().

◆ m_cache_num_set_bits

int CacheMemory::m_cache_num_set_bits

private

Definition at line 186 of file CacheMemory.hh.

Referenced by addressToCacheSet(), and init().

◆ m_cache_num_sets

int CacheMemory::m_cache_num_sets

private

Definition at line 185 of file CacheMemory.hh.

Referenced by getAddressAtIdx(), getNumBlocks(), getReplacementWeight(), init(), print(), recordCacheContents(), and ~CacheMemory().

◆ m_cache_size

int CacheMemory::m_cache_size

private

Definition at line 184 of file CacheMemory.hh.

Referenced by CacheMemory(), getCacheSize(), and init().

◆ m_is_instruction_only_cache

bool CacheMemory::m_is_instruction_only_cache

private

Definition at line 171 of file CacheMemory.hh.

Referenced by CacheMemory(), and recordCacheContents().

◆ m_replacementPolicy_ptr

ReplacementPolicy::Base* CacheMemory::m_replacementPolicy_ptr

private

We use the replacement policies from the Classic memory system.

Definition at line 179 of file CacheMemory.hh.

Referenced by allocate(), CacheMemory(), cacheProbe(), deallocate(), init(), setMRU(), testCacheAccess(), tryCacheAccess(), and ~CacheMemory().

◆ m_resource_stalls

bool CacheMemory::m_resource_stalls

private

Definition at line 189 of file CacheMemory.hh.

Referenced by CacheMemory(), checkResourceAvailable(), and recordRequestType().

◆ m_start_index_bit

int CacheMemory::m_start_index_bit

private

Definition at line 188 of file CacheMemory.hh.

Referenced by addressToCacheSet(), and CacheMemory().

◆ m_tag_index

std::unordered_map<Addr, int> CacheMemory::m_tag_index

private

Definition at line 175 of file CacheMemory.hh.

Referenced by allocate(), deallocate(), findTagInSet(), and findTagInSetIgnorePermissions().

◆ m_use_occupancy

bool CacheMemory::m_use_occupancy

private

Set to true when using WeightedLRU replacement policy, otherwise, set to false.

Definition at line 206 of file CacheMemory.hh.

Referenced by CacheMemory(), and setMRU().

◆ replacement_data

std::vector<std::vector<ReplData> > CacheMemory::replacement_data

private

We store all the ReplacementData in a 2-dimensional array.

By doing this, we can use all replacement policies from Classic system. Ruby cache will deallocate cache entry every time we evict the cache block so we cannot store the ReplacementData inside the cache entry. Instantiate ReplacementData for multiple times will break replacement policy like TreePLRU.

Definition at line 200 of file CacheMemory.hh.

Referenced by allocate(), and init().

◆ tagArray

BankedArray CacheMemory::tagArray

private

Definition at line 182 of file CacheMemory.hh.

Referenced by checkResourceAvailable(), getTagLatency(), and recordRequestType().

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

mem/ruby/structures/CacheMemory.hh
mem/ruby/structures/CacheMemory.cc

Classes

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

◆ ReplData

Constructor & Destructor Documentation

◆ CacheMemory() [1/2]

◆ ~CacheMemory()

◆ CacheMemory() [2/2]

Member Function Documentation

◆ addressToCacheSet()

◆ allocate()

◆ allocateVoid()

◆ cacheAvail()

◆ cacheProbe()

◆ checkResourceAvailable()

◆ clearLocked()

◆ clearLockedAll()

◆ deallocate()

◆ findTagInSet()

◆ findTagInSetIgnorePermissions()

◆ getAddressAtIdx()

◆ getCacheAssoc()

◆ getCacheSize()

◆ getDataLatency()

◆ getNullEntry()

◆ getNumBlocks()

◆ getReplacementWeight()

◆ getTagLatency()

◆ htmAbortTransaction()

◆ htmCommitTransaction()

◆ init()

◆ isBlockInvalid()

◆ isBlockNotBusy()

◆ isLocked()

◆ isTagPresent()

◆ lookup() [1/2]

◆ lookup() [2/2]

◆ operator=()

◆ print()

◆ printData()

◆ profileDemandHit()

◆ profileDemandMiss()

◆ profilePrefetchHit()

◆ profilePrefetchMiss()

◆ recordCacheContents()

◆ recordRequestType()

◆ setLocked()

◆ setMRU() [1/3]

◆ setMRU() [2/3]

◆ setMRU() [3/3]

◆ testCacheAccess()

◆ tryCacheAccess()

Member Data Documentation

◆ cacheMemoryStats

◆ dataArray

◆ m_block_size

◆ m_cache

◆ m_cache_assoc

◆ m_cache_num_set_bits

◆ m_cache_num_sets

◆ m_cache_size

◆ m_is_instruction_only_cache

◆ m_replacementPolicy_ptr

◆ m_resource_stalls

◆ m_start_index_bit

◆ m_tag_index

◆ m_use_occupancy

◆ replacement_data

◆ tagArray