#include <multi.hh>

Inheritance diagram for MultiCompressor:

Classes
class	MultiCompData

Public Types
typedef MultiCompressorParams	Params
	Convenience typedef. More...

Public Types inherited from BaseCacheCompressor
typedef BaseCacheCompressorParams	Params
	Convenience typedef. More...

Public Types inherited from SimObject
typedef SimObjectParams	Params

Public Member Functions
	MultiCompressor (const Params *p)
	Default constructor. More...

	~MultiCompressor ()
	Default destructor. More...

void	regStats () override
	Callback to set stat parameters. More...

std::unique_ptr< BaseCacheCompressor::CompressionData >	compress (const uint64_t *data, Cycles &comp_lat, Cycles &decomp_lat) override
	Apply the compression process to the cache line. More...

void	decompress (const CompressionData comp_data, uint64_t data) override
	Apply the decompression process to the compressed data. More...

Public Member Functions inherited from BaseCacheCompressor
	BaseCacheCompressor (const Params *p)
	Default constructor. More...

virtual	~BaseCacheCompressor ()
	Default destructor. More...

void	compress (const uint64_t *data, Cycles &comp_lat, Cycles &decomp_lat, std::size_t &comp_size_bits)
	Apply the compression process to the cache line. More...

Cycles	getDecompressionLatency (const CacheBlk *blk)
	Get the decompression latency if the block is compressed. More...

Public Member Functions inherited from SimObject
virtual	~SimObject ()

virtual const std::string	name () const

virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected. More...

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint. More...

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint. More...

virtual void	regProbePoints ()
	Register probe points for this object. More...

virtual void	regProbeListeners ()
	Register probe listeners for this object. More...

ProbeManager *	getProbeManager ()
	Get the probe manager for this object. More...

virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index. More...

virtual void	startup ()
	startup() is the final initialization call before simulation. More...

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining. More...

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes. More...

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers. More...

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

const Params *	params () const

	SimObject (const Params *_params)

Public Member Functions inherited from EventManager
EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick) -1)

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

Public Member Functions inherited from Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section. More...

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object. More...

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from Drainable
DrainState	drainState () const
	Return the current drain state of an object. More...

virtual void	notifyFork ()
	Notify a child process of a fork. More...

Public Member Functions inherited from Stats::Group
	Group (Group parent, const char name=nullptr)
	Construct a new statistics group. More...

virtual	~Group ()

virtual void	resetStats ()
	Callback to reset stats. More...

virtual void	preDumpStats ()
	Callback before stats are dumped. More...

void	addStat (Stats::Info *info)
	Register a stat with this group. More...

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object. More...

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object. More...

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block. More...

const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group. More...

	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Protected Attributes
std::vector< BaseCacheCompressor * >	compressors
	List of sub-compressors. More...

Stats::Vector2d	rankStats
	Number of times each compressor provided the nth best compression. More...

Protected Attributes inherited from BaseCacheCompressor
const std::size_t	blkSize
	Uncompressed cache line size (in bytes). More...

const std::size_t	sizeThreshold
	Size in bytes at which a compression is classified as bad and therefore the compressed block is restored to its uncompressed format. More...

BaseCacheCompressor::BaseCacheCompressorStats	stats

Protected Attributes inherited from SimObject
const SimObjectParams *	_params
	Cached copy of the object parameters. More...

Protected Attributes inherited from EventManager
EventQueue *	eventq
	A pointer to this object's event queue. More...

Additional Inherited Members
Static Public Member Functions inherited from BaseCacheCompressor
static void	setDecompressionLatency (CacheBlk *blk, const Cycles lat)
	Set the decompression latency of compressed block. More...

static void	setSizeBits (CacheBlk *blk, const std::size_t size_bits)
	Set the size of the compressed block, in bits. More...

Static Public Member Functions inherited from SimObject
static void	serializeAll (CheckpointOut &cp)
	Serialize all SimObjects in the system. More...

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it. More...

Static Public Member Functions inherited from Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section. More...

static void	serializeAll (const std::string &cpt_dir)

static void	unserializeGlobals (CheckpointIn &cp)

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

virtual void	drainResume ()
	Resume execution after a successful drain. More...

void	signalDrainDone () const
	Signal that an object is drained. More...

Detailed Description

Definition at line 45 of file multi.hh.

Member Typedef Documentation

◆ Params

typedef MultiCompressorParams MultiCompressor::Params

Convenience typedef.

Definition at line 72 of file multi.hh.

Constructor & Destructor Documentation

◆ MultiCompressor()

MultiCompressor::MultiCompressor ( const Params * p )

Default constructor.

Definition at line 56 of file multi.cc.

References compressors, and fatal_if.

Referenced by regStats().

◆ ~MultiCompressor()

MultiCompressor::~MultiCompressor ( )

Default destructor.

Definition at line 62 of file multi.cc.

References compressors.

Member Function Documentation

◆ compress()

std::unique_ptr< BaseCacheCompressor::CompressionData > MultiCompressor::compress	(	const uint64_t *	cache_line,
		Cycles &	comp_lat,
		Cycles &	decomp_lat
	)

overridevirtual

Apply the compression process to the cache line.

Returns the number of cycles used by the compressor, however it is usually covered by a good pipelined execution, and is currently ignored. The decompression latency is also returned, in order to avoid increasing simulation time and memory consumption.

Parameters

cache_line	The cache line to be compressed.
comp_lat	Compression latency in number of cycles.
decomp_lat	Decompression latency in number of cycles.

Returns: Cache line after compression.

Implements BaseCacheCompressor.

Definition at line 70 of file multi.cc.

References alignToPowerOfTwo(), BaseCacheCompressor::blkSize, compressors, DPRINTF, ArmISA::i, MipsISA::index, and rankStats.

◆ decompress()

void MultiCompressor::decompress	(	const CompressionData *	comp_data,
		uint64_t *	cache_line
	)

overridevirtual

Apply the decompression process to the compressed data.

Parameters

comp_data	Compressed cache line.
cache_line	The cache line to be decompressed.

Implements BaseCacheCompressor.

Definition at line 149 of file multi.cc.

References MultiCompressor::MultiCompData::compData, compressors, and MultiCompressor::MultiCompData::getIndex().

◆ regStats()

void MultiCompressor::regStats ( )

overridevirtual

Callback to set stat parameters.

This callback is typically used for complex stats (e.g., distributions) that need parameters in addition to a name and a description. Stat names and descriptions should typically be set from the constructor usingo from the constructor using the ADD_STAT macro.

Reimplemented from Stats::Group.

Definition at line 159 of file multi.cc.

References compressors, Stats::Vector2dBase< Derived, Stor >::init(), MultiCompressor(), SimObject::name(), rankStats, Stats::Group::regStats(), Stats::DataWrapVec< Derived, InfoProxyType >::subdesc(), Stats::DataWrapVec< Derived, InfoProxyType >::subname(), sc_dt::to_string(), and Stats::DataWrapVec2d< Derived, InfoProxyType >::ysubname().

Member Data Documentation

◆ compressors

std::vector<BaseCacheCompressor*> MultiCompressor::compressors

protected

List of sub-compressors.

Definition at line 53 of file multi.hh.

Referenced by compress(), decompress(), MultiCompressor(), regStats(), and ~MultiCompressor().

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

mem/cache/compressors/multi.hh
mem/cache/compressors/multi.cc

Classes

Public Types

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

Constructor & Destructor Documentation

◆ MultiCompressor()

◆ ~MultiCompressor()

Member Function Documentation

◆ compress()

◆ decompress()

◆ regStats()

Member Data Documentation

◆ compressors