Generator to read protobuf trace containing memory requests at fixed timestamps, perform flow control and issue memory requests. More...

#include <trace_cpu.hh>

Classes
class	InputStream
	The InputStream encapsulates a trace file and the internal buffers and populates TraceElements based on the input. More...

struct	TraceElement
	This struct stores a line in the trace file. More...

Public Member Functions
	FixedRetryGen (TraceCPU &_owner, const std::string &_name, MasterPort &_port, MasterID master_id, const std::string &trace_file)

Tick	init ()
	Called from TraceCPU init(). More...

bool	tryNext ()
	This tries to send current or retry packet and returns true if successfull. More...

const std::string &	name () const
	Returns name of the FixedRetryGen instance. More...

bool	send (Addr addr, unsigned size, const MemCmd &cmd, Request::FlagsType flags, Addr pc)
	Creates a new request assigning the request parameters passed by the arguments. More...

void	exit ()
	Exit the FixedRetryGen. More...

bool	nextExecute ()
	Reads a line of the trace file. More...

bool	isTraceComplete ()
	Returns the traceComplete variable which is set when end of the input trace file is reached. More...

int64_t	tickDelta ()

void	regStats ()

Private Attributes
TraceCPU &	owner
	Reference of the TraceCPU. More...

MasterPort &	port
	Reference of the port to be used to issue memory requests. More...

const MasterID	masterID
	MasterID used for the requests being sent. More...

InputStream	trace
	Input stream used for reading the input trace file. More...

std::string	genName
	String to store the name of the FixedRetryGen. More...

PacketPtr	retryPkt
	PacketPtr used to store the packet to retry. More...

int64_t	delta
	Stores the difference in the send ticks of the current and last packets. More...

bool	traceComplete
	Set to true when end of trace is reached. More...

TraceElement	currElement
	Store an element read from the trace to send as the next packet. More...

Stats::Scalar	numSendAttempted
	Stats for instruction accesses replayed. More...

Stats::Scalar	numSendSucceeded

Stats::Scalar	numSendFailed

Stats::Scalar	numRetrySucceeded

Stats::Scalar	instLastTick
	Last simulated tick by the FixedRetryGen. More...

Detailed Description

Generator to read protobuf trace containing memory requests at fixed timestamps, perform flow control and issue memory requests.

If L1 cache port sends packet succesfully, determine the tick to send the next packet else wait for retry from cache.

Definition at line 339 of file trace_cpu.hh.

Constructor & Destructor Documentation

◆ FixedRetryGen()

TraceCPU::FixedRetryGen::FixedRetryGen	(	TraceCPU &	_owner,
		const std::string &	_name,
		MasterPort &	_port,
		MasterID	master_id,
		const std::string &	trace_file
	)

inline

Definition at line 425 of file trace_cpu.hh.

References TraceCPU::init().

Member Function Documentation

◆ exit()

void TraceCPU::FixedRetryGen::exit ( )

Exit the FixedRetryGen.

Definition at line 1107 of file trace_cpu.cc.

References TraceCPU::ElasticDataGen::InputStream::reset(), and TraceCPU::ElasticDataGen::trace.

◆ init()

Tick TraceCPU::FixedRetryGen::init ( )

Called from TraceCPU init().

Reads the first message from the input trace file and returns the send tick.

Returns: Tick when first packet must be sent

Definition at line 1043 of file trace_cpu.cc.

References DPRINTF, MaxTick, and panic.

Referenced by TraceCPU::init().

◆ isTraceComplete()

bool TraceCPU::FixedRetryGen::isTraceComplete ( )

inline

Returns the traceComplete variable which is set when end of the input trace file is reached.

Returns: bool true if traceComplete is set, false otherwise.

Definition at line 492 of file trace_cpu.hh.

Referenced by TraceCPU::schedIcacheNext().

◆ name()

const std::string& TraceCPU::FixedRetryGen::name ( ) const

inline

Returns name of the FixedRetryGen instance.

Definition at line 456 of file trace_cpu.hh.

References addr, X86ISA::exit, MipsISA::pc, and AtomicRequestProtocol::send().

◆ nextExecute()

bool TraceCPU::FixedRetryGen::nextExecute ( )

Reads a line of the trace file.

Returns the tick when the next request should be generated. If the end of the file has been reached, it returns false.

Returns: bool false id end of file has been reached

Definition at line 1113 of file trace_cpu.cc.

References curTick(), DPRINTF, TraceCPU::ElasticDataGen::InputStream::read(), TraceCPU::ElasticDataGen::trace, and TraceCPU::ElasticDataGen::traceComplete.

◆ regStats()

void TraceCPU::FixedRetryGen::regStats ( )

Definition at line 1012 of file trace_cpu.cc.

References Stats::DataWrap< Derived, InfoProxyType >::desc(), Stats::DataWrap< Derived, InfoProxyType >::name(), TraceCPU::ElasticDataGen::name(), TraceCPU::ElasticDataGen::numRetrySucceeded, TraceCPU::ElasticDataGen::numSendAttempted, TraceCPU::ElasticDataGen::numSendFailed, and TraceCPU::ElasticDataGen::numSendSucceeded.

Referenced by TraceCPU::regStats().

◆ send()

bool TraceCPU::FixedRetryGen::send	(	Addr	addr,
		unsigned	size,
		const MemCmd &	cmd,
		Request::FlagsType	flags,
		Addr	pc
	)

Creates a new request assigning the request parameters passed by the arguments.

Calls the port's sendTimingReq() and returns true if the packet was sent succesfully. It is called by tryNext()

Parameters

addr	address of request
size	size of request
cmd	if it is a read or write request
flags	associated request flags
pc	instruction PC that generated the request

Returns: true if packet was sent successfully

Definition at line 1144 of file trace_cpu.cc.

References addr, Packet::dataDynamic(), MemCmd::isWrite(), TraceCPU::ElasticDataGen::masterID, TraceCPU::ElasticDataGen::port, TraceCPU::ElasticDataGen::retryPkt, and MasterPort::sendTimingReq().

◆ tickDelta()

int64_t TraceCPU::FixedRetryGen::tickDelta ( )

inline

Definition at line 494 of file trace_cpu.hh.

References TraceCPU::regStats().

Referenced by TraceCPU::schedIcacheNext().

◆ tryNext()

bool TraceCPU::FixedRetryGen::tryNext ( )

This tries to send current or retry packet and returns true if successfull.

It calls nextExecute() to read next message.

Returns: bool true if packet is sent successfully

Definition at line 1058 of file trace_cpu.cc.

References DPRINTF, TraceCPU::ElasticDataGen::numRetrySucceeded, TraceCPU::ElasticDataGen::numSendAttempted, TraceCPU::ElasticDataGen::numSendFailed, TraceCPU::ElasticDataGen::numSendSucceeded, TraceCPU::ElasticDataGen::port, TraceCPU::ElasticDataGen::retryPkt, MasterPort::sendTimingReq(), and TraceCPU::ElasticDataGen::traceComplete.

Referenced by TraceCPU::schedIcacheNext().

Member Data Documentation

◆ currElement

TraceElement TraceCPU::FixedRetryGen::currElement

private

Store an element read from the trace to send as the next packet.

Definition at line 531 of file trace_cpu.hh.

◆ delta

int64_t TraceCPU::FixedRetryGen::delta

private

Stores the difference in the send ticks of the current and last packets.

Keeping this signed to check overflow to a negative value which will be caught by assert(delta > 0)

Definition at line 523 of file trace_cpu.hh.

◆ genName

std::string TraceCPU::FixedRetryGen::genName

private

String to store the name of the FixedRetryGen.

Definition at line 513 of file trace_cpu.hh.

◆ instLastTick

Stats::Scalar TraceCPU::FixedRetryGen::instLastTick

private

Last simulated tick by the FixedRetryGen.

Definition at line 539 of file trace_cpu.hh.

◆ masterID

const MasterID TraceCPU::FixedRetryGen::masterID

private

MasterID used for the requests being sent.

Definition at line 507 of file trace_cpu.hh.

◆ numRetrySucceeded

Stats::Scalar TraceCPU::FixedRetryGen::numRetrySucceeded

private

Definition at line 537 of file trace_cpu.hh.

◆ numSendAttempted

Stats::Scalar TraceCPU::FixedRetryGen::numSendAttempted

private

Stats for instruction accesses replayed.

Definition at line 534 of file trace_cpu.hh.

◆ numSendFailed

Stats::Scalar TraceCPU::FixedRetryGen::numSendFailed

private

Definition at line 536 of file trace_cpu.hh.

◆ numSendSucceeded

Stats::Scalar TraceCPU::FixedRetryGen::numSendSucceeded

private

Definition at line 535 of file trace_cpu.hh.

◆ owner

TraceCPU& TraceCPU::FixedRetryGen::owner

private

Reference of the TraceCPU.

Definition at line 501 of file trace_cpu.hh.

◆ port

MasterPort& TraceCPU::FixedRetryGen::port

private

Reference of the port to be used to issue memory requests.

Definition at line 504 of file trace_cpu.hh.

◆ retryPkt

PacketPtr TraceCPU::FixedRetryGen::retryPkt

private

PacketPtr used to store the packet to retry.

Definition at line 516 of file trace_cpu.hh.

◆ trace

InputStream TraceCPU::FixedRetryGen::trace

private

Input stream used for reading the input trace file.

Definition at line 510 of file trace_cpu.hh.

◆ traceComplete

bool TraceCPU::FixedRetryGen::traceComplete

private

Set to true when end of trace is reached.

Definition at line 528 of file trace_cpu.hh.

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

cpu/trace/trace_cpu.hh
cpu/trace/trace_cpu.cc

Classes

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ FixedRetryGen()

Member Function Documentation

◆ exit()

◆ init()

◆ isTraceComplete()

◆ name()

◆ nextExecute()

◆ regStats()

◆ send()

◆ tickDelta()

◆ tryNext()

Member Data Documentation

◆ currElement

◆ delta

◆ genName

◆ instLastTick

◆ masterID

◆ numRetrySucceeded

◆ numSendAttempted

◆ numSendFailed

◆ numSendSucceeded

◆ owner

◆ port

◆ retryPkt

◆ trace

◆ traceComplete