A pipeline simulating class that will stall (not advance when advance() is called) if a non-bubble value lies at the far end of the pipeline. More...

#include <buffers.hh>

Inheritance diagram for gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >:

Public Member Functions
	SelfStallingPipeline (const std::string &name, const std::string &data_name, unsigned depth)

void	push (ElemType &elem)
	Write an element to the back of the pipeline.

ElemType &	front ()
	Peek at the end element of the pipe.

const ElemType &	front () const

bool	alreadyPushed ()
	Have we already pushed onto this pipe without advancing.

bool	isPopable ()
	There's data (not a bubble) at the end of the pipe.

void	advance ()
	Try to advance the pipeline.

Public Member Functions inherited from gem5::minor::MinorBuffer< ElemType, ReportTraits >
	MinorBuffer (const std::string &name, const std::string &data_name, int num_past, int num_future, int report_left=-1, int report_right=-1)

bool	empty () const

void	minorTrace () const
	Report buffer states from 'slot' 'from' to 'to'.

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

virtual	~Named ()=default

virtual std::string	name () const

Public Member Functions inherited from gem5::TimeBuffer< ElemType >
	TimeBuffer (int p, int f)

	TimeBuffer ()

	~TimeBuffer ()

void	id (int id)

int	id ()

void	advance ()

ElemType *	access (int idx)

ElemType &	operator[] (int idx)

const ElemType &	operator[] (int idx) const

wire	getWire (int idx)

wire	zero ()

unsigned	getSize ()

Public Attributes
bool	stalled
	If true, advance will not advance the pipeline.

unsigned int	occupancy
	The number of slots with non-bubbles in them.

Protected Attributes
TimeBuffer< ElemType >::wire	pushWire
	Wire at the input end of the pipeline (for convenience)

TimeBuffer< ElemType >::wire	popWire
	Wire at the output end of the pipeline (for convenience)

Protected Attributes inherited from gem5::minor::MinorBuffer< ElemType, ReportTraits >
int	reportLeft
	The range of elements that should appear in trace lines.

int	reportRight

std::string	dataName
	Name to use for the data in a MinorTrace line.

Protected Attributes inherited from gem5::TimeBuffer< ElemType >
int	past

int	future

unsigned	size

int	_id

char *	data

std::vector< char * >	index

unsigned	base

Additional Inherited Members
Protected Member Functions inherited from gem5::TimeBuffer< ElemType >
void	valid (int idx) const

int	calculateVectorIndex (int idx) const

Detailed Description

template<typename ElemType, typename ReportTraits, typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>
class gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >

A pipeline simulating class that will stall (not advance when advance() is called) if a non-bubble value lies at the far end of the pipeline.

The user can clear the stall before calling advance to unstall the pipeline.

Definition at line 293 of file buffers.hh.

Constructor & Destructor Documentation

◆ SelfStallingPipeline()

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::SelfStallingPipeline	(	const std::string &	name,
		const std::string &	data_name,
		unsigned	depth )

inline

Definition at line 309 of file buffers.hh.

References gem5::ArmISA::i.

Member Function Documentation

◆ advance()

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

void gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::advance ( )

inline

Try to advance the pipeline.

If we're stalled, don't advance. If we're not stalled, advance then check to see if we become stalled (a non-bubble at the end of the pipe)

Definition at line 355 of file buffers.hh.

References gem5::TimeBuffer< T >::advance(), gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::isPopable(), gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::occupancy, gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::pushWire, and gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::stalled.

Referenced by gem5::minor::FUPipeline::advance().

◆ alreadyPushed()

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

bool gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::alreadyPushed ( )

inline

Have we already pushed onto this pipe without advancing.

Definition at line 346 of file buffers.hh.

References gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::pushWire.

Referenced by gem5::minor::FUPipeline::advance(), and gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::push().

◆ front() [1/2]

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

ElemType & gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::front ( )

inline

Peek at the end element of the pipe.

Definition at line 341 of file buffers.hh.

References gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::popWire.

Referenced by gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::isPopable().

◆ front() [2/2]

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

const ElemType & gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::front ( ) const

inline

Definition at line 343 of file buffers.hh.

References gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::popWire.

◆ isPopable()

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

bool gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::isPopable ( )

inline

There's data (not a bubble) at the end of the pipe.

Definition at line 349 of file buffers.hh.

References gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::front().

Referenced by gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::advance().

◆ push()

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

void gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::push ( ElemType & elem )

inline

Write an element to the back of the pipeline.

This doesn't cause the pipeline to advance until advance is called. Pushing twice without advance-ing will just cause an overwrite of the last push's data.

Definition at line 332 of file buffers.hh.

References gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::alreadyPushed(), gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::occupancy, and gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::pushWire.

Member Data Documentation

◆ occupancy

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

unsigned int gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::occupancy

The number of slots with non-bubbles in them.

Definition at line 306 of file buffers.hh.

Referenced by gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::advance(), and gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::push().

◆ popWire

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

TimeBuffer<ElemType>::wire gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::popWire

protected

Wire at the output end of the pipeline (for convenience)

Definition at line 299 of file buffers.hh.

Referenced by gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::front(), and gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::front().

◆ pushWire

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

TimeBuffer<ElemType>::wire gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::pushWire

protected

Wire at the input end of the pipeline (for convenience)

Definition at line 297 of file buffers.hh.

Referenced by gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::advance(), gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::alreadyPushed(), and gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::push().

◆ stalled

template<typename ElemType , typename ReportTraits , typename BubbleTraits = BubbleTraitsAdaptor<ElemType>>

bool gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::stalled

If true, advance will not advance the pipeline.

Definition at line 303 of file buffers.hh.

Referenced by gem5::minor::FUPipeline::advance(), and gem5::minor::SelfStallingPipeline< ElemType, ReportTraits, BubbleTraits >::advance().

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

cpu/minor/buffers.hh

Public Member Functions

Public Attributes

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SelfStallingPipeline()

Member Function Documentation

◆ advance()

◆ alreadyPushed()

◆ front() [1/2]

◆ front() [2/2]

◆ isPopable()

◆ push()

Member Data Documentation

◆ occupancy

◆ popWire

◆ pushWire

◆ stalled