A queue entry base class, to be used by both the MSHRs and write-queue entries. More...

#include <queue_entry.hh>

Inheritance diagram for gem5::QueueEntry:

Classes
class	Target
	A queue entry is holding packets that will be serviced as soon as resources are available. More...

Public Member Functions
	QueueEntry (const std::string &name)

bool	isUncacheable () const

virtual bool	matchBlockAddr (const Addr addr, const bool is_secure) const =0
	Check if entry corresponds to the one being looked for.

virtual bool	matchBlockAddr (const PacketPtr pkt) const =0
	Check if entry contains a packet that corresponds to the one being looked for.

virtual bool	conflictAddr (const QueueEntry *entry) const =0
	Check if given entry's packets conflict with this' entries packets.

virtual bool	sendPacket (BaseCache &cache)=0
	Send this queue entry as a downstream packet, with the exact behaviour depending on the specific entry type.

virtual Target *	getTarget ()=0
	Returns a pointer to the first target.

Public Member Functions inherited from gem5::Packet::SenderState
	SenderState ()

virtual	~SenderState ()

Public Member Functions inherited from gem5::Named
	Named (const std::string &name_)

virtual	~Named ()=default

virtual std::string	name () const

Public Attributes
bool	inService
	True if the entry has been sent downstream.

Counter	order
	Order number assigned to disambiguate writes and misses.

Addr	blkAddr
	Block aligned address.

unsigned	blkSize
	Block size of the cache.

bool	isSecure
	True if the entry targets the secure memory space.

Public Attributes inherited from gem5::Packet::SenderState
SenderState *	predecessor

Protected Attributes
Tick	readyTime
	Tick when ready to issue.

bool	_isUncacheable
	True if the entry is uncacheable.

Friends
template<class Entry >
class	Queue
	Consider the Queue a friend to avoid making everything public.

Detailed Description

A queue entry base class, to be used by both the MSHRs and write-queue entries.

Definition at line 62 of file queue_entry.hh.

Constructor & Destructor Documentation

◆ QueueEntry()

gem5::QueueEntry::QueueEntry ( const std::string & name )

inline

Definition at line 124 of file queue_entry.hh.

Member Function Documentation

◆ conflictAddr()

virtual bool gem5::QueueEntry::conflictAddr ( const QueueEntry * entry ) const

pure virtual

Check if given entry's packets conflict with this' entries packets.

Parameters

entry Other entry to compare against.

Returns: True if entry matches given information.

Implemented in gem5::MSHR, and gem5::WriteQueueEntry.

◆ getTarget()

virtual Target * gem5::QueueEntry::getTarget ( )

pure virtual

Returns a pointer to the first target.

Returns: A pointer to the first target.

Implemented in gem5::MSHR, and gem5::WriteQueueEntry.

Referenced by gem5::BaseCache::CacheReqPacketQueue::sendDeferredPacket().

◆ isUncacheable()

bool gem5::QueueEntry::isUncacheable ( ) const

inline

Definition at line 130 of file queue_entry.hh.

References _isUncacheable.

Referenced by gem5::Cache::recvTimingSnoopReq().

◆ matchBlockAddr() [1/2]

virtual bool gem5::QueueEntry::matchBlockAddr	(	const Addr	addr,
		const bool	is_secure ) const

pure virtual

Check if entry corresponds to the one being looked for.

Parameters

addr	Address to match against.
is_secure	Whether the target should be in secure space or not.

Returns: True if entry matches given information.

Implemented in gem5::MSHR, and gem5::WriteQueueEntry.

Referenced by gem5::MSHR::conflictAddr(), and gem5::WriteQueueEntry::conflictAddr().

◆ matchBlockAddr() [2/2]

virtual bool gem5::QueueEntry::matchBlockAddr ( const PacketPtr pkt ) const

pure virtual

Check if entry contains a packet that corresponds to the one being looked for.

Parameters

pkt	The packet to search for.

Returns: True if any of its targets' packets matches the given one.

Implemented in gem5::MSHR, and gem5::WriteQueueEntry.

◆ sendPacket()

virtual bool gem5::QueueEntry::sendPacket ( BaseCache & cache )

pure virtual

Send this queue entry as a downstream packet, with the exact behaviour depending on the specific entry type.

Implemented in gem5::MSHR, and gem5::WriteQueueEntry.

Referenced by gem5::BaseCache::CacheReqPacketQueue::sendDeferredPacket().

Friends And Related Symbol Documentation

◆ Queue

template<class Entry >

friend class Queue

friend

Consider the Queue a friend to avoid making everything public.

Definition at line 69 of file queue_entry.hh.

Member Data Documentation

◆ _isUncacheable

bool gem5::QueueEntry::_isUncacheable

protected

True if the entry is uncacheable.

Definition at line 77 of file queue_entry.hh.

Referenced by gem5::MSHR::allocate(), gem5::WriteQueueEntry::allocate(), isUncacheable(), gem5::MSHR::print(), and gem5::WriteQueueEntry::print().

◆ blkAddr

Addr gem5::QueueEntry::blkAddr

Block aligned address.

Definition at line 116 of file queue_entry.hh.

Referenced by gem5::MSHR::allocate(), gem5::WriteQueueEntry::allocate(), gem5::MSHR::conflictAddr(), gem5::WriteQueueEntry::conflictAddr(), gem5::MSHR::extractServiceableTargets(), gem5::MSHR::matchBlockAddr(), gem5::MSHR::matchBlockAddr(), gem5::WriteQueueEntry::matchBlockAddr(), gem5::WriteQueueEntry::matchBlockAddr(), gem5::MSHR::print(), gem5::WriteQueueEntry::print(), gem5::BaseCache::sendMSHRQueuePacket(), gem5::Cache::sendMSHRQueuePacket(), gem5::MSHR::trySatisfyFunctional(), and gem5::WriteQueueEntry::trySatisfyFunctional().

◆ blkSize

unsigned gem5::QueueEntry::blkSize

Block size of the cache.

Definition at line 119 of file queue_entry.hh.

Referenced by gem5::MSHR::allocate(), gem5::WriteQueueEntry::allocate(), gem5::MSHR::extractServiceableTargets(), gem5::MSHR::handleSnoop(), gem5::MSHR::matchBlockAddr(), gem5::WriteQueueEntry::matchBlockAddr(), gem5::MSHR::print(), gem5::WriteQueueEntry::print(), gem5::MSHR::trySatisfyFunctional(), gem5::WriteQueueEntry::trySatisfyFunctional(), and gem5::MSHR::TargetList::updateWriteFlags().

◆ inService

bool gem5::QueueEntry::inService

True if the entry has been sent downstream.

Definition at line 110 of file queue_entry.hh.

Referenced by gem5::MSHR::allocate(), gem5::WriteQueueEntry::allocate(), gem5::MSHR::allocateTarget(), gem5::BaseCache::allocateWriteBuffer(), gem5::MSHR::deallocate(), gem5::WriteQueueEntry::deallocate(), gem5::BaseCache::functionalAccess(), gem5::MSHR::handleSnoop(), gem5::MSHR::hasPostDowngrade(), gem5::MSHR::hasPostInvalidate(), gem5::MSHR::isPendingModified(), gem5::MSHR::markInService(), gem5::MSHRQueue::markPending(), gem5::MSHRQueue::moveToFront(), gem5::MSHR::print(), and gem5::WriteQueueEntry::print().

◆ isSecure

bool gem5::QueueEntry::isSecure

True if the entry targets the secure memory space.

Definition at line 122 of file queue_entry.hh.

Referenced by gem5::MSHR::allocate(), gem5::WriteQueueEntry::allocate(), gem5::MSHR::conflictAddr(), gem5::WriteQueueEntry::conflictAddr(), gem5::MSHR::matchBlockAddr(), gem5::MSHR::matchBlockAddr(), gem5::WriteQueueEntry::matchBlockAddr(), gem5::WriteQueueEntry::matchBlockAddr(), gem5::MSHR::print(), gem5::WriteQueueEntry::print(), gem5::BaseCache::sendMSHRQueuePacket(), gem5::Cache::sendMSHRQueuePacket(), gem5::MSHR::trySatisfyFunctional(), and gem5::WriteQueueEntry::trySatisfyFunctional().

◆ order

Counter gem5::QueueEntry::order

Order number assigned to disambiguate writes and misses.

Definition at line 113 of file queue_entry.hh.

Referenced by gem5::MSHR::TargetList::add(), gem5::WriteQueueEntry::TargetList::add(), gem5::MSHR::allocate(), gem5::WriteQueueEntry::allocate(), gem5::BaseCache::getNextQueueEntry(), and gem5::MSHR::promoteDeferredTargets().

◆ readyTime

Tick gem5::QueueEntry::readyTime

protected

Tick when ready to issue.

Definition at line 74 of file queue_entry.hh.

Referenced by gem5::MSHR::TargetList::add(), gem5::WriteQueueEntry::TargetList::add(), gem5::MSHR::allocate(), gem5::WriteQueueEntry::allocate(), gem5::MSHR::delay(), and gem5::MSHR::promoteDeferredTargets().

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

mem/cache/queue_entry.hh

Classes

Public Member Functions

Public Attributes

Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ QueueEntry()

Member Function Documentation

◆ conflictAddr()

◆ getTarget()

◆ isUncacheable()

◆ matchBlockAddr() [1/2]

◆ matchBlockAddr() [2/2]

◆ sendPacket()

Friends And Related Symbol Documentation

◆ Queue

Member Data Documentation

◆ _isUncacheable

◆ blkAddr

◆ blkSize

◆ inService

◆ isSecure

◆ order

◆ readyTime