MESI Class Reference

The MESI coherence protocol. More...

#include <mesi.h>

Inheritance diagram for MESI:

Collaboration diagram for MESI:

Public Member Functions
	MESI (CacheABC &cache)
	Construct a new MESI coherence protocol. More...
void	PrRd (cache_line *line)
	Receive a PrRd message. More...
void	PrWr (cache_line *line)
	Receive a PrWr message. More...
bool	BusRd (cache_line *line)
	Receive a BusRd message. More...
bool	BusRdX (cache_line *line)
	Receive a BusRdX message. More...
bool	BusUpgr (cache_line *line)
	Receive a BusUpgr message. More...
bool	isWriteBackNeeded (state_e state)
	Determine whether a line needs to be written back to main memory. More...
Public Member Functions inherited from CoherenceProtocol
	CoherenceProtocol (CacheABC &cache)
	Construct a new coherence protocol. More...
virtual bool	BusUpdt (cache_line *line)
	Receive a BusUpdt message. More...
virtual bool	BusWr (cache_line *line)
	Receive a BusWr message. More...
virtual bool	doesDirtySharing ()
	Determine whether the coherence protocol does dirty sharing. More...
virtual bool	doesWriteNoAllocate ()
	Determine whether the coherence protocol uses write no-allocate. More...

Additional Inherited Members
Protected Attributes inherited from CoherenceProtocol
CacheABC &	cache
	The parent cache.

Detailed Description

The MESI coherence protocol.

Constructor & Destructor Documentation

MESI()

MESI::MESI ( CacheABC &  cache )

inline

Construct a new MESI coherence protocol.

Parameters

cache

The parent cache

Member Function Documentation

BusRd()

bool MESI::BusRd ( cache_line *  line )

virtual

Receive a BusRd message.

Parameters

line	The cache line accessed

Returns

True if the line data can be or could have been shared

Implements CoherenceProtocol.

BusRdX()

bool MESI::BusRdX ( cache_line *  line )

virtual

Receive a BusRdX message.

Parameters

line	The cache line accessed

Returns

True if the line data can be or could have been shared

Reimplemented from CoherenceProtocol.

BusUpgr()

bool MESI::BusUpgr ( cache_line *  line )

virtual

Receive a BusUpgr message.

Parameters

line	The cache line accessed

Returns

True if the line data can be or could have been shared

Reimplemented from CoherenceProtocol.

isWriteBackNeeded()

bool MESI::isWriteBackNeeded ( state_e  state )

virtual

Determine whether a line needs to be written back to main memory.

Parameters

state

The state of the line

Returns

Whether the line needs to be written back to main memory

Implements CoherenceProtocol.

PrRd()

void MESI::PrRd ( cache_line *  line )

virtual

Receive a PrRd message.

Parameters

line	The cache line accessed (non-null)

Implements CoherenceProtocol.

PrWr()

void MESI::PrWr ( cache_line *  line )

virtual

Receive a PrWr message.

Parameters

line	The cache line accessed (non-null)

Implements CoherenceProtocol.

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

• src/coherence/mesi.h
• src/coherence/mesi.cc