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

#include <trace_cpu.hh>

Classes
struct	FixedRetryGenStatGroup

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, RequestPort &_port, RequestorID requestor_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 ()

Protected Attributes
TraceCPU::FixedRetryGen::FixedRetryGenStatGroup	fixedStats

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

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

const RequestorID	requestorId
	RequestorID 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...

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 325 of file trace_cpu.hh.

Constructor & Destructor Documentation

◆ FixedRetryGen()

TraceCPU::FixedRetryGen::FixedRetryGen	(	TraceCPU &	_owner,
		const std::string &	_name,
		RequestPort &	_port,
		RequestorID	requestor_id,
		const std::string &	trace_file
	)

inline

Definition at line 405 of file trace_cpu.hh.

Member Function Documentation

◆ exit()

void TraceCPU::FixedRetryGen::exit ( )

Exit the FixedRetryGen.

Definition at line 1039 of file trace_cpu.cc.

References TraceCPU::FixedRetryGen::InputStream::reset(), and 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 977 of file trace_cpu.cc.

References currElement, DPRINTF, MaxTick, nextExecute(), panic, and TraceCPU::FixedRetryGen::TraceElement::tick.

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 472 of file trace_cpu.hh.

References traceComplete.

Referenced by TraceCPU::schedIcacheNext().

◆ name()

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

inline

Returns name of the FixedRetryGen instance.

Definition at line 436 of file trace_cpu.hh.

References genName.

◆ 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 1045 of file trace_cpu.cc.

References TraceCPU::FixedRetryGen::TraceElement::addr, TraceCPU::FixedRetryGen::TraceElement::blocksize, TraceCPU::FixedRetryGen::TraceElement::clear(), TraceCPU::FixedRetryGen::TraceElement::cmd, currElement, curTick(), DPRINTF, fixedStats, TraceCPU::FixedRetryGen::FixedRetryGenStatGroup::instLastTick, MemCmd::isRead(), TraceCPU::FixedRetryGen::TraceElement::pc, TraceCPU::FixedRetryGen::InputStream::read(), TraceCPU::FixedRetryGen::TraceElement::tick, trace, and traceComplete.

Referenced by init(), and tryNext().

◆ 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 1076 of file trace_cpu.cc.

References X86ISA::addr, Packet::dataDynamic(), MemCmd::isWrite(), MipsISA::pc, port, requestorId, retryPkt, and RequestPort::sendTimingReq().

Referenced by tryNext().

◆ tickDelta()

int64_t TraceCPU::FixedRetryGen::tickDelta ( )

inline

Definition at line 474 of file trace_cpu.hh.

References delta.

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 992 of file trace_cpu.cc.

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 508 of file trace_cpu.hh.

Referenced by init(), nextExecute(), and tryNext().

◆ 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 500 of file trace_cpu.hh.

Referenced by tickDelta(), and tryNext().

◆ fixedStats

TraceCPU::FixedRetryGen::FixedRetryGenStatGroup TraceCPU::FixedRetryGen::fixedStats

protected

Referenced by nextExecute(), and tryNext().

◆ genName

std::string TraceCPU::FixedRetryGen::genName

private

String to store the name of the FixedRetryGen.

Definition at line 490 of file trace_cpu.hh.

Referenced by name().

◆ owner

TraceCPU& TraceCPU::FixedRetryGen::owner

private

Reference of the TraceCPU.

Definition at line 478 of file trace_cpu.hh.

Referenced by TraceCPU::IcachePort::recvReqRetry(), TraceCPU::DcachePort::recvReqRetry(), and TraceCPU::DcachePort::recvTimingResp().

◆ port

RequestPort& TraceCPU::FixedRetryGen::port

private

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

Definition at line 481 of file trace_cpu.hh.

Referenced by send(), and tryNext().

◆ requestorId

const RequestorID TraceCPU::FixedRetryGen::requestorId

private

RequestorID used for the requests being sent.

Definition at line 484 of file trace_cpu.hh.

Referenced by send().

◆ retryPkt

PacketPtr TraceCPU::FixedRetryGen::retryPkt

private

PacketPtr used to store the packet to retry.

Definition at line 493 of file trace_cpu.hh.

Referenced by send(), and tryNext().

◆ trace

InputStream TraceCPU::FixedRetryGen::trace

private

Input stream used for reading the input trace file.

Definition at line 487 of file trace_cpu.hh.

Referenced by exit(), nextExecute(), TraceCPU::FixedRetryGen::InputStream::read(), and TraceCPU::FixedRetryGen::InputStream::reset().

◆ traceComplete

bool TraceCPU::FixedRetryGen::traceComplete

private

Set to true when end of trace is reached.

Definition at line 505 of file trace_cpu.hh.

Referenced by isTraceComplete(), nextExecute(), and tryNext().

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

Protected Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ FixedRetryGen()

Member Function Documentation

◆ exit()

◆ init()

◆ isTraceComplete()

◆ name()

◆ nextExecute()

◆ send()

◆ tickDelta()

◆ tryNext()

Member Data Documentation

◆ currElement

◆ delta

◆ fixedStats

◆ genName

◆ owner

◆ port

◆ requestorId

◆ retryPkt

◆ trace

◆ traceComplete