gem5::memory::qos::QueuePolicy Class Reference

QoS Queue Policy. More...

#include <q_policy.hh>

Inheritance diagram for gem5::memory::qos::QueuePolicy:

Public Types
typedef std::deque< PacketPtr >	PacketQueue

Public Member Functions
virtual void	enqueuePacket (PacketPtr pkt)
	This method is called by the memory controller after it enqueues a packet.
virtual PacketQueue::iterator	selectPacket (PacketQueue *queue)=0
	Policy selector.
void	setMemCtrl (MemCtrl *mem)
	Setting a pointer to the Memory Controller implementing the policy.
virtual	~QueuePolicy ()

Static Public Member Functions
static QueuePolicy *	create (const QoSMemCtrlParams &p)
	This factory method is used for generating the queue policy.

Protected Member Functions
	QueuePolicy (const QoSMemCtrlParams &p)

Protected Attributes
MemCtrl *	memCtrl
	Pointer to parent memory controller implementing the policy.

Detailed Description

QoS Queue Policy.

The QoS Queue Policy class implements algorithms to schedule packets within the same QoS priority queue

Definition at line 65 of file q_policy.hh.

Member Typedef Documentation

PacketQueue

typedef std::deque<PacketPtr> gem5::memory::qos::QueuePolicy::PacketQueue

Definition at line 68 of file q_policy.hh.

Constructor & Destructor Documentation

~QueuePolicy()

virtual gem5::memory::qos::QueuePolicy::~QueuePolicy ( )

inlinevirtual

Definition at line 108 of file q_policy.hh.

QueuePolicy()

gem5::memory::qos::QueuePolicy::QueuePolicy ( const QoSMemCtrlParams & p )

inlineprotected

Definition at line 111 of file q_policy.hh.

Member Function Documentation

create()

QueuePolicy * gem5::memory::qos::QueuePolicy::create ( const QoSMemCtrlParams & p )

static

This factory method is used for generating the queue policy.

It takes the memory controller params as an argument and returns the related QueuePolicy object. If no particular QueuePolicy has been specified in the QoSMemCtrlParams, the method will default to a LIFO queue policy.

Parameters

p	qos::MemCtrl parameter variable

Returns

Pointer to the QueuePolicy

Definition at line 59 of file q_policy.cc.

References gem5::MipsISA::p.

enqueuePacket()

virtual void gem5::memory::qos::QueuePolicy::enqueuePacket ( PacketPtr pkt )

inlinevirtual

This method is called by the memory controller after it enqueues a packet.

It is a way for the queue policy to hook into the packet enqueuing and update relevant metadata. This will then be used once the QueuePolicy::selectPacket will be called.

Parameters

pkt	Enqueued packet

Reimplemented in gem5::memory::qos::LrgQueuePolicy.

Definition at line 89 of file q_policy.hh.

selectPacket()

virtual PacketQueue::iterator gem5::memory::qos::QueuePolicy::selectPacket ( PacketQueue * queue )

pure virtual

Policy selector.

The implementation of this virtual method selects the packet to be serviced from the packet queue passed as an argument.

Parameters

queue

Non-empty packet queue to select a packet from

Returns

Iterator pointing to the packet in the queue to be serviced

Implemented in gem5::memory::qos::FifoQueuePolicy, gem5::memory::qos::LifoQueuePolicy, and gem5::memory::qos::LrgQueuePolicy.

setMemCtrl()

void gem5::memory::qos::QueuePolicy::setMemCtrl ( MemCtrl * mem )

inline

Setting a pointer to the Memory Controller implementing the policy.

Definition at line 106 of file q_policy.hh.

References mem, and memCtrl.

Member Data Documentation

memCtrl

MemCtrl* gem5::memory::qos::QueuePolicy::memCtrl

protected

Pointer to parent memory controller implementing the policy.

Definition at line 116 of file q_policy.hh.

Referenced by gem5::memory::qos::LrgQueuePolicy::enqueuePacket(), gem5::memory::qos::LrgQueuePolicy::selectPacket(), and setMemCtrl().

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

• mem/qos/q_policy.hh
• mem/qos/q_policy.cc