RandomGen Class Reference

The random generator is similar to the linear one, but does not generate sequential addresses. More...

#include <generators.hh>

Inheritance diagram for RandomGen:

Public Member Functions
	RandomGen (const std::string &_name, MasterID master_id, Tick _duration, Addr start_addr, Addr end_addr, Addr _blocksize, Tick min_period, Tick max_period, uint8_t read_percent, Addr data_limit)
	Create a random address sequence generator. More...
void	enter ()
	Enter this generator state. More...
PacketPtr	getNextPacket ()
	Get the next generated packet. More...
Tick	nextPacketTick (bool elastic, Tick delay) const
	Determine the tick when the next packet is available. More...
Public Member Functions inherited from BaseGen
	BaseGen (const std::string &_name, MasterID master_id, Tick _duration)
	Create a base generator. More...
virtual	~BaseGen ()
std::string	name () const
	Get the name, useful for DPRINTFs. More...
virtual void	exit ()
	Exit this generator state. More...

Protected Attributes
const Addr	startAddr
	Start of address range. More...
const Addr	endAddr
	End of address range. More...
const Addr	blocksize
	Block size. More...
const Tick	minPeriod
	Request generation period. More...
const Tick	maxPeriod
const uint8_t	readPercent
	Percent of generated transactions that should be reads. More...
const Addr	dataLimit
	Maximum amount of data to manipulate. More...
Addr	dataManipulated
	Counter to determine the amount of data manipulated. More...
Protected Attributes inherited from BaseGen
const std::string	_name
	Name to use for status and debug printing. More...
const MasterID	masterID
	The MasterID used for generating requests. More...

Additional Inherited Members
Public Attributes inherited from BaseGen
const Tick	duration
	Time to spend in this state. More...
Protected Member Functions inherited from BaseGen
PacketPtr	getPacket (Addr addr, unsigned size, const MemCmd &cmd, Request::FlagsType flags=0)
	Generate a new request and associated packet. More...

Detailed Description

The random generator is similar to the linear one, but does not generate sequential addresses.

Instead it randomly picks an address in the range, aligned to the block size.

Definition at line 241 of file generators.hh.

Constructor & Destructor Documentation

RandomGen::RandomGen ( const std::string &  _name, MasterID  master_id, Tick  _duration, Addr  start_addr, Addr  end_addr, Addr  _blocksize, Tick  min_period, Tick  max_period, uint8_t  read_percent, Addr  data_limit  )

inline

Create a random address sequence generator.

Set min_period == max_period for a fixed inter-transaction time.

Parameters

_name	Name to use for status and debug
master_id	MasterID set on each request
_duration	duration of this state before transitioning
start_addr	Start address
end_addr	End address
_blocksize	Size used for transactions injected
min_period	Lower limit of random inter-transaction time
max_period	Upper limit of random inter-transaction time
read_percent	Percent of transactions that are reads
data_limit	Upper limit on how much data to read/write

Definition at line 262 of file generators.hh.

Member Function Documentation

void RandomGen::enter ( )

virtual

Enter this generator state.

Implements BaseGen.

Definition at line 149 of file generators.cc.

References dataManipulated.

PacketPtr RandomGen::getNextPacket ( )

virtual

Get the next generated packet.

Returns

A packet to be sent at the current tick

Implements BaseGen.

Reimplemented in DramRotGen, and DramGen.

Definition at line 156 of file generators.cc.

References addr, blocksize, dataManipulated, DPRINTF, endAddr, BaseGen::getPacket(), Random::random(), random_mt, readPercent, MemCmd::ReadReq, startAddr, and MemCmd::WriteReq.

Tick RandomGen::nextPacketTick ( bool  elastic, Tick  delay  ) const

virtual

Determine the tick when the next packet is available.

MaxTick means that there will not be any further packets in the current activation cycle of the generator.

Parameters

elastic	should the injection respond to flow control or not
delay	time the previous packet spent waiting

Returns

next tick when a packet is available

Implements BaseGen.

Definition at line 384 of file generators.cc.

References curTick(), dataLimit, dataManipulated, DPRINTF, maxPeriod, MaxTick, minPeriod, Random::random(), and random_mt.

Member Data Documentation

const Addr RandomGen::blocksize

protected

Block size.

Definition at line 288 of file generators.hh.

Referenced by DramGen::genStartAddr(), getNextPacket(), DramGen::getNextPacket(), and DramRotGen::getNextPacket().

const Addr RandomGen::dataLimit

protected

Maximum amount of data to manipulate.

Definition at line 300 of file generators.hh.

Referenced by nextPacketTick().

Addr RandomGen::dataManipulated

protected

Counter to determine the amount of data manipulated.

Used to determine if we should continue generating requests.

Definition at line 307 of file generators.hh.

Referenced by enter(), getNextPacket(), DramGen::getNextPacket(), DramRotGen::getNextPacket(), and nextPacketTick().

const Addr RandomGen::endAddr

protected

End of address range.

Definition at line 285 of file generators.hh.

Referenced by DramGen::genStartAddr(), and getNextPacket().

const Tick RandomGen::maxPeriod

protected

Definition at line 292 of file generators.hh.

Referenced by nextPacketTick().

const Tick RandomGen::minPeriod

protected

Request generation period.

Definition at line 291 of file generators.hh.

Referenced by nextPacketTick().

const uint8_t RandomGen::readPercent

protected

Percent of generated transactions that should be reads.

Definition at line 297 of file generators.hh.

Referenced by DramRotGen::DramRotGen(), getNextPacket(), DramGen::getNextPacket(), and DramRotGen::getNextPacket().

const Addr RandomGen::startAddr

protected

Start of address range.

Definition at line 282 of file generators.hh.

Referenced by DramGen::genStartAddr(), and getNextPacket().

---

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

• cpu/testers/traffic_gen/generators.hh
• cpu/testers/traffic_gen/generators.cc