StridePrefetcher::PCTable Class Reference

#include <stride.hh>

Public Member Functions
	PCTable (int assoc, int sets, const std::string name, BaseReplacementPolicy *replacementPolicy)
	Default constructor. More...
	~PCTable ()
	Default destructor. More...
StrideEntry *	findEntry (Addr pc, bool is_secure)
	Search for an entry in the pc table. More...
StrideEntry *	findVictim (Addr pc)
	Find a replacement victim to make room for given PC. More...

Private Member Functions
const std::string	name ()
Addr	pcHash (Addr pc) const
	PC hashing function to index sets in the table. More...

Private Attributes
const int	pcTableSets
const std::string	_name
std::vector< std::vector< StrideEntry > >	entries
BaseReplacementPolicy *	replacementPolicy
	Replacement policy used by StridePrefetcher. More...

Detailed Description

Definition at line 98 of file stride.hh.

Constructor & Destructor Documentation

PCTable()

StridePrefetcher::PCTable::PCTable	(	int	assoc,
		int	sets,
		const std::string	name,
		BaseReplacementPolicy *	replacementPolicy
	)

Default constructor.

Create a table with given parameters.

Parameters

assoc	Associativity of the table.
sets	Number of sets in the table.
name	Name of the prefetcher.
replacementPolicy	Replacement policy used by the table.

Definition at line 118 of file stride.cc.

References entries, and BaseReplacementPolicy::instantiateEntry().

~PCTable()

StridePrefetcher::PCTable::~PCTable

(

)

Default destructor.

Definition at line 136 of file stride.cc.

Member Function Documentation

findEntry()

StridePrefetcher::StrideEntry * StridePrefetcher::PCTable::findEntry ( Addr  pc, bool  is_secure  )

inline

Search for an entry in the pc table.

Parameters

pc	The PC to look for.
is_secure	True if the target memory space is secure.

Returns

Pointer to the entry.

Definition at line 251 of file stride.cc.

References DPRINTF, entries, pcHash(), replacementPolicy, StridePrefetcher::StridePrefetcher(), and BaseReplacementPolicy::touch().

Referenced by StridePrefetcher::calculatePrefetch().

findVictim()

StridePrefetcher::StrideEntry * StridePrefetcher::PCTable::findVictim ( Addr  pc )

inline

Find a replacement victim to make room for given PC.

Parameters

pc	The PC value.

Returns

The victimized entry.

Definition at line 229 of file stride.cc.

References DPRINTF, entries, ReplaceableEntry::getSet(), BaseReplacementPolicy::getVictim(), ReplaceableEntry::getWay(), pcHash(), and replacementPolicy.

Referenced by StridePrefetcher::calculatePrefetch().

name()

const std::string StridePrefetcher::PCTable::name ( )

inlineprivate

Definition at line 135 of file stride.hh.

pcHash()

Addr StridePrefetcher::PCTable::pcHash ( Addr  pc ) const

inlineprivate

PC hashing function to index sets in the table.

Parameters

pc	The PC value.

Returns

The set to which this PC maps.

Definition at line 221 of file stride.cc.

References floorLog2(), and pcTableSets.

Referenced by findEntry(), and findVictim().

Member Data Documentation

_name

const std::string StridePrefetcher::PCTable::_name

private

Definition at line 137 of file stride.hh.

entries

std::vector<std::vector<StrideEntry> > StridePrefetcher::PCTable::entries

private

Definition at line 138 of file stride.hh.

Referenced by findEntry(), findVictim(), and PCTable().

pcTableSets

const int StridePrefetcher::PCTable::pcTableSets

private

Definition at line 136 of file stride.hh.

Referenced by pcHash().

replacementPolicy

BaseReplacementPolicy* StridePrefetcher::PCTable::replacementPolicy

private

Replacement policy used by StridePrefetcher.

Definition at line 143 of file stride.hh.

Referenced by StridePrefetcher::calculatePrefetch(), findEntry(), and findVictim().

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

• mem/cache/prefetch/stride.hh
• mem/cache/prefetch/stride.cc