Class containing the information needed by the prefetch to train and generate new prefetch requests. More...

#include <base.hh>

Public Member Functions
Addr	getAddr () const
	Obtains the address value of this Prefetcher address. More...

bool	isSecure () const
	Returns true if the address targets the secure memory space. More...

Addr	getPC () const
	Returns the program counter that generated this request. More...

bool	hasPC () const
	Returns true if the associated program counter is valid. More...

MasterID	getMasterId () const
	Gets the requestor ID that generated this address. More...

unsigned int	getSize () const
	Gets the size of the request triggering this event. More...

bool	isWrite () const
	Checks if the request that caused this prefetch event was a write request. More...

Addr	getPaddr () const
	Gets the physical address of the request. More...

bool	isCacheMiss () const
	Check if this event comes from a cache miss. More...

template<typename T >
T	get (ByteOrder endian) const
	Gets the associated data of the request triggering the event. More...

bool	sameAddr (PrefetchInfo const &pfi) const
	Check for equality. More...

	PrefetchInfo (PacketPtr pkt, Addr addr, bool miss)
	Constructs a PrefetchInfo using a PacketPtr. More...

	PrefetchInfo (PrefetchInfo const &pfi, Addr addr)
	Constructs a PrefetchInfo using a new address value and another PrefetchInfo as a reference. More...

	~PrefetchInfo ()

Private Attributes
Addr	address
	The address used to train and generate prefetches. More...

Addr	pc
	The program counter that generated this address. More...

MasterID	masterId
	The requestor ID that generated this address. More...

bool	validPC
	Validity bit for the PC of this address. More...

bool	secure
	Whether this address targets the secure memory space. More...

unsigned int	size
	Size in bytes of the request triggering this event. More...

bool	write
	Whether this event comes from a write request. More...

Addr	paddress
	Physical address, needed because address can be virtual. More...

bool	cacheMiss
	Whether this event comes from a cache miss. More...

uint8_t *	data
	Pointer to the associated request data. More...

Detailed Description

Class containing the information needed by the prefetch to train and generate new prefetch requests.

Definition at line 92 of file base.hh.

Constructor & Destructor Documentation

◆ PrefetchInfo() [1/2]

BasePrefetcher::PrefetchInfo::PrefetchInfo	(	PacketPtr	pkt,
		Addr	addr,
		bool	miss
	)

Constructs a PrefetchInfo using a PacketPtr.

Parameters

pkt	PacketPtr used to generate the PrefetchInfo
addr	the address value of the new object, this address is used to train the prefetcher
miss	whether this event comes from a cache miss

Definition at line 59 of file base.cc.

References data, Packet::getAddr(), Packet::getConstPtr(), ArmISA::offset, Packet::req, and write.

◆ PrefetchInfo() [2/2]

BasePrefetcher::PrefetchInfo::PrefetchInfo	(	PrefetchInfo const &	pfi,
		Addr	addr
	)

Constructs a PrefetchInfo using a new address value and another PrefetchInfo as a reference.

Parameters

pfi	PrefetchInfo used to generate this new object
addr	the address value of the new object

Definition at line 75 of file base.cc.

◆ ~PrefetchInfo()

BasePrefetcher::PrefetchInfo::~PrefetchInfo ( )

inline

Definition at line 250 of file base.hh.

References data.

Member Function Documentation

◆ get()

template<typename T >

T BasePrefetcher::PrefetchInfo::get ( ByteOrder endian ) const

inline

Gets the associated data of the request triggering the event.

Parameters

Byte	ordering of the stored data

Returns: the data

Definition at line 205 of file base.hh.

References betoh(), BigEndianByteOrder, letoh(), LittleEndianByteOrder, and panic.

Referenced by IndirectMemoryPrefetcher::calculatePrefetch().

◆ getAddr()

Addr BasePrefetcher::PrefetchInfo::getAddr ( ) const

inline

Obtains the address value of this Prefetcher address.

Returns: the addres value.

Definition at line 119 of file base.hh.

◆ getMasterId()

MasterID BasePrefetcher::PrefetchInfo::getMasterId ( ) const

inline

Gets the requestor ID that generated this address.

Returns: the requestor ID that generated this address

Definition at line 156 of file base.hh.

References BasePrefetcher::masterId.

Referenced by StridePrefetcher::calculatePrefetch().

◆ getPaddr()

Addr BasePrefetcher::PrefetchInfo::getPaddr ( ) const

inline

Gets the physical address of the request.

Returns: physical address of the request

Definition at line 184 of file base.hh.

Referenced by STeMSPrefetcher::calculatePrefetch().

◆ getPC()

Addr BasePrefetcher::PrefetchInfo::getPC ( ) const

inline

Returns the program counter that generated this request.

Returns: the pc value

Definition at line 137 of file base.hh.

References MipsISA::pc.

Referenced by DeltaCorrelatingPredictionTables::calculatePrefetch(), IrregularStreamBufferPrefetcher::calculatePrefetch(), StridePrefetcher::calculatePrefetch(), STeMSPrefetcher::calculatePrefetch(), IndirectMemoryPrefetcher::calculatePrefetch(), QueuedPrefetcher::DeferredPacket::createPkt(), and QueuedPrefetcher::createPrefetchRequest().

◆ getSize()

unsigned int BasePrefetcher::PrefetchInfo::getSize ( ) const

inline

Gets the size of the request triggering this event.

Returns: the size in bytes of the request triggering this event

Definition at line 165 of file base.hh.

Referenced by IndirectMemoryPrefetcher::calculatePrefetch().

◆ hasPC()

bool BasePrefetcher::PrefetchInfo::hasPC ( ) const

inline

Returns true if the associated program counter is valid.

Returns: true if the program counter has a valid value

Definition at line 147 of file base.hh.

Referenced by DeltaCorrelatingPredictionTables::calculatePrefetch(), IrregularStreamBufferPrefetcher::calculatePrefetch(), StridePrefetcher::calculatePrefetch(), STeMSPrefetcher::calculatePrefetch(), IndirectMemoryPrefetcher::calculatePrefetch(), and QueuedPrefetcher::DeferredPacket::createPkt().

◆ isCacheMiss()

bool BasePrefetcher::PrefetchInfo::isCacheMiss ( ) const

inline

Check if this event comes from a cache miss.

Returns: true if this event comes from a cache miss

Definition at line 193 of file base.hh.

Referenced by STeMSPrefetcher::calculatePrefetch(), and IndirectMemoryPrefetcher::calculatePrefetch().

◆ isSecure()

bool BasePrefetcher::PrefetchInfo::isSecure ( ) const

inline

Returns true if the address targets the secure memory space.

Returns: true if the address targets the secure memory space.

Definition at line 128 of file base.hh.

Referenced by IrregularStreamBufferPrefetcher::calculatePrefetch(), StridePrefetcher::calculatePrefetch(), AccessMapPatternMatching::calculatePrefetch(), STeMSPrefetcher::calculatePrefetch(), IndirectMemoryPrefetcher::calculatePrefetch(), SignaturePathPrefetcher::calculatePrefetch(), QueuedPrefetcher::DeferredPacket::createPkt(), QueuedPrefetcher::insert(), QueuedPrefetcher::notify(), and sameAddr().

◆ isWrite()

bool BasePrefetcher::PrefetchInfo::isWrite ( ) const

inline

Checks if the request that caused this prefetch event was a write request.

Returns: true if the request causing this event is a write request

Definition at line 175 of file base.hh.

Referenced by IndirectMemoryPrefetcher::calculatePrefetch().

◆ sameAddr()

bool BasePrefetcher::PrefetchInfo::sameAddr ( PrefetchInfo const & pfi ) const

inline

Check for equality.

Parameters

pfi	PrefetchInfo to compare against

Returns: True if this object and the provided one are equal

Definition at line 227 of file base.hh.

References addr, getAddr(), isSecure(), and BasePrefetcher::PrefetchListener::miss.

Member Data Documentation

◆ address

Addr BasePrefetcher::PrefetchInfo::address

private

The address used to train and generate prefetches.

Definition at line 94 of file base.hh.

◆ cacheMiss

bool BasePrefetcher::PrefetchInfo::cacheMiss

private

Whether this event comes from a cache miss.

Definition at line 110 of file base.hh.

◆ data

uint8_t* BasePrefetcher::PrefetchInfo::data

private

Pointer to the associated request data.

Definition at line 112 of file base.hh.

Referenced by PrefetchInfo().

◆ masterId

MasterID BasePrefetcher::PrefetchInfo::masterId

private

The requestor ID that generated this address.

Definition at line 98 of file base.hh.

◆ paddress

Addr BasePrefetcher::PrefetchInfo::paddress

private

Physical address, needed because address can be virtual.

Definition at line 108 of file base.hh.

◆ pc

Addr BasePrefetcher::PrefetchInfo::pc

private

The program counter that generated this address.

Definition at line 96 of file base.hh.

◆ secure

bool BasePrefetcher::PrefetchInfo::secure

private

Whether this address targets the secure memory space.

Definition at line 102 of file base.hh.

◆ size

unsigned int BasePrefetcher::PrefetchInfo::size

private

Size in bytes of the request triggering this event.

Definition at line 104 of file base.hh.

◆ validPC

bool BasePrefetcher::PrefetchInfo::validPC

private

Validity bit for the PC of this address.

Definition at line 100 of file base.hh.

◆ write

bool BasePrefetcher::PrefetchInfo::write

private

Whether this event comes from a write request.

Definition at line 106 of file base.hh.

Referenced by PrefetchInfo().

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

mem/cache/prefetch/base.hh
mem/cache/prefetch/base.cc

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ PrefetchInfo() [1/2]

◆ PrefetchInfo() [2/2]

◆ ~PrefetchInfo()

Member Function Documentation

◆ get()

◆ getAddr()

◆ getMasterId()

◆ getPaddr()

◆ getPC()

◆ getSize()

◆ hasPC()

◆ isCacheMiss()

◆ isSecure()

◆ isWrite()

◆ sameAddr()

Member Data Documentation

◆ address

◆ cacheMiss

◆ data

◆ masterId

◆ paddress

◆ pc

◆ secure

◆ size

◆ validPC

◆ write