gem5::PowerModel Class Reference

#include <power_model.hh>

Inheritance diagram for gem5::PowerModel:

Classes
class	ThermalProbeListener
	Listener class to catch thermal events. More...

Public Types
typedef PowerModelParams	Params
Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Public Member Functions
	PowerModel (const Params &p)
double	getDynamicPower () const
	Get the dynamic power consumption.
double	getStaticPower () const
	Get the static power consumption.
void	setClockedObject (ClockedObject *clkobj)
virtual void	regProbePoints ()
	Register probe points for this object.
void	thermalUpdateCallback (const Temperature &temp)
Public Member Functions inherited from gem5::SimObject
const Params &	params () const
	SimObject (const Params &p)
virtual	~SimObject ()
virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected.
virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint.
virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint.
virtual void	regProbeListeners ()
	Register probe listeners for this object.
ProbeManager *	getProbeManager ()
	Get the probe manager for this object.
virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index.
virtual void	startup ()
	startup() is the final initialization call before simulation.
DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining.
virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes.
virtual void	memInvalidate ()
	Invalidate the contents of memory buffers.
void	serialize (CheckpointOut &cp) const override
	Serialize an object.
void	unserialize (CheckpointIn &cp) override
	Unserialize an object.
Public Member Functions inherited from gem5::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)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers.
void	setCurTick (Tick newVal)
	EventManager (EventManager &em)
	Event manger manages events in the event queue.
	EventManager (EventManager *em)
	EventManager (EventQueue *eq)
Public Member Functions inherited from gem5::Serializable
	Serializable ()
virtual	~Serializable ()
void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section.
void	serializeSection (CheckpointOut &cp, const std::string &name) const
void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object.
void	unserializeSection (CheckpointIn &cp, const std::string &name)
Public Member Functions inherited from gem5::Drainable
DrainState	drainState () const
	Return the current drain state of an object.
virtual void	notifyFork ()
	Notify a child process of a fork.
Public Member Functions inherited from gem5::statistics::Group
	Group (Group *parent, const char *name=nullptr)
	Construct a new statistics group.
virtual	~Group ()
virtual void	regStats ()
	Callback to set stat parameters.
virtual void	resetStats ()
	Callback to reset stats.
virtual void	preDumpStats ()
	Callback before stats are dumped.
void	addStat (statistics::Info *info)
	Register a stat with this group.
const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object.
const std::vector< Info * > &	getStats () const
	Get all stats associated with this object.
void	addStatGroup (const char *name, Group *block)
	Add a stat block as a child of this block.
const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group.
void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block.
	Group ()=delete
	Group (const Group &)=delete
Group &	operator= (const Group &)=delete
Public Member Functions inherited from gem5::Named
	Named (const std::string &name_)
virtual	~Named ()=default
virtual std::string	name () const

Protected Attributes
std::vector< PowerModelState * >	states_pm
	Actual power models (one per power state)
std::unique_ptr< ThermalProbeListener >	thermalListener
	Listener to catch temperature changes in the SubSystem.
SubSystem *	subsystem
	The subsystem this power model belongs to.
ClockedObject *	clocked_object
	The clocked object we belong to.
enums::PMType	power_model_type
	The type of power model - collects all power, static or dynamic only.
statistics::Value	dynamicPower
statistics::Value	staticPower
Protected Attributes inherited from gem5::SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters.
Protected Attributes inherited from gem5::EventManager
EventQueue *	eventq
	A pointer to this object's event queue.

Additional Inherited Members
Static Public Member Functions inherited from gem5::SimObject
static void	serializeAll (const std::string &cpt_dir)
	Create a checkpoint by serializing all SimObjects in the system.
static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it.
static void	setSimObjectResolver (SimObjectResolver *resolver)
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.
static SimObjectResolver *	getSimObjectResolver ()
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.
Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section.
static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it.
Protected Member Functions inherited from gem5::Drainable
	Drainable ()
virtual	~Drainable ()
virtual void	drainResume ()
	Resume execution after a successful drain.
void	signalDrainDone () const
	Signal that an object is drained.

Detailed Description

See also

gem5 Power Model

A PowerModel is a class containing a power model for a SimObject. The PM describes the power consumption for every power state.

Definition at line 107 of file power_model.hh.

Member Typedef Documentation

Params

typedef PowerModelParams gem5::PowerModel::Params

Definition at line 111 of file power_model.hh.

Constructor & Destructor Documentation

PowerModel()

gem5::PowerModel::PowerModel

(

const Params &

p

)

Definition at line 62 of file power_model.cc.

References dynamicPower, getDynamicPower(), getStaticPower(), gem5::statistics::ValueBase< Derived >::method(), gem5::MipsISA::p, panic_if, gem5::SubSystem::registerPowerProducer(), states_pm, staticPower, and subsystem.

Member Function Documentation

getDynamicPower()

double gem5::PowerModel::getDynamicPower

(

)

const

Get the dynamic power consumption.

Returns

Power (Watts) consumed by this object (dynamic component)

Definition at line 111 of file power_model.cc.

References clocked_object, gem5::PowerState::getWeights(), gem5::ArmISA::i, power_model_type, gem5::ClockedObject::powerState, states_pm, gem5::MipsISA::w, and warn_if.

Referenced by PowerModel().

getStaticPower()

double gem5::PowerModel::getStaticPower

(

)

const

Get the static power consumption.

Returns

Power (Watts) consumed by this object (static component)

Definition at line 137 of file power_model.cc.

References clocked_object, gem5::PowerState::getWeights(), gem5::ArmISA::i, power_model_type, gem5::ClockedObject::powerState, states_pm, gem5::MipsISA::w, and warn.

Referenced by PowerModel().

regProbePoints()

void gem5::PowerModel::regProbePoints ( )

virtual

Register probe points for this object.

No probe points by default, so do nothing in base.

Reimplemented from gem5::SimObject.

Definition at line 103 of file power_model.cc.

References gem5::SimObject::getProbeManager(), subsystem, and thermalListener.

setClockedObject()

void gem5::PowerModel::setClockedObject

(

ClockedObject *

clkobj

)

Definition at line 87 of file power_model.cc.

References clocked_object, and states_pm.

thermalUpdateCallback()

void gem5::PowerModel::thermalUpdateCallback

(

const Temperature &

temp

)

Definition at line 96 of file power_model.cc.

References states_pm.

Referenced by gem5::PowerModel::ThermalProbeListener::notify().

Member Data Documentation

clocked_object

ClockedObject* gem5::PowerModel::clocked_object

protected

The clocked object we belong to.

Definition at line 162 of file power_model.hh.

Referenced by getDynamicPower(), getStaticPower(), and setClockedObject().

dynamicPower

statistics::Value gem5::PowerModel::dynamicPower

protected

Definition at line 167 of file power_model.hh.

Referenced by PowerModel().

power_model_type

enums::PMType gem5::PowerModel::power_model_type

protected

The type of power model - collects all power, static or dynamic only.

Definition at line 165 of file power_model.hh.

Referenced by getDynamicPower(), and getStaticPower().

states_pm

std::vector<PowerModelState*> gem5::PowerModel::states_pm

protected

Actual power models (one per power state)

Definition at line 153 of file power_model.hh.

Referenced by getDynamicPower(), getStaticPower(), PowerModel(), setClockedObject(), and thermalUpdateCallback().

staticPower

statistics::Value gem5::PowerModel::staticPower

protected

Definition at line 167 of file power_model.hh.

Referenced by PowerModel().

subsystem

SubSystem* gem5::PowerModel::subsystem

protected

The subsystem this power model belongs to.

Definition at line 159 of file power_model.hh.

Referenced by PowerModel(), and regProbePoints().

thermalListener

std::unique_ptr<ThermalProbeListener> gem5::PowerModel::thermalListener

protected

Listener to catch temperature changes in the SubSystem.

Definition at line 156 of file power_model.hh.

Referenced by regProbePoints().

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

• sim/power/power_model.hh
• sim/power/power_model.cc