gem5  v21.1.0.2
Public Types | Public Member Functions | Private Member Functions | Private Attributes | List of all members
gem5::MathExprPowerModel Class Reference

A Equation power model. More...

#include <mathexpr_powermodel.hh>

Inheritance diagram for gem5::MathExprPowerModel:
gem5::PowerModelState gem5::SimObject gem5::EventManager gem5::Serializable gem5::Drainable gem5::statistics::Group gem5::Named

Public Types

typedef MathExprPowerModelParams Params
 
- Public Types inherited from gem5::PowerModelState
typedef PowerModelStateParams Params
 
- Public Types inherited from gem5::SimObject
typedef SimObjectParams Params
 

Public Member Functions

 MathExprPowerModel (const Params &p)
 
double getDynamicPower () const override
 Get the dynamic power consumption. More...
 
double getStaticPower () const override
 Get the static power consumption. More...
 
double getStatValue (const std::string &name) const
 Get the value for a variable (maps to a stat) More...
 
void startup () override
 startup() is the final initialization call before simulation. More...
 
void regStats () override
 Callback to set stat parameters. More...
 
- Public Member Functions inherited from gem5::PowerModelState
 PowerModelState (const Params &p)
 
virtual void setTemperature (Temperature temp)
 Temperature update. More...
 
void setClockedObject (ClockedObject *clkobj)
 
- Public Member Functions inherited from gem5::SimObject
const Paramsparams () 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. 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...
 
ProbeManagergetProbeManager ()
 Get the probe manager for this object. More...
 
virtual PortgetPort (const std::string &if_name, PortID idx=InvalidPortID)
 Get a port with a given name and index. 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...
 
- Public Member Functions inherited from gem5::EventManager
EventQueueeventQueue () 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. More...
 
void setCurTick (Tick newVal)
 
 EventManager (EventManager &em)
 Event manger manages events in the event queue. More...
 
 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. 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 gem5::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 gem5::statistics::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 (statistics::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 InforesolveStat (std::string name) const
 Resolve a stat by its name within this group. More...
 
void mergeStatGroup (Group *block)
 Merge the contents (stats & children) of a block to this block. More...
 
 Group ()=delete
 
 Group (const Group &)=delete
 
Groupoperator= (const Group &)=delete
 
- Public Member Functions inherited from gem5::Named
 Named (const std::string &name_)
 
virtual ~Named ()=default
 
virtual std::string name () const
 

Private Member Functions

double eval (const MathExpr &expr) const
 Evaluate an expression in the context of this object, fatal if evaluation fails. More...
 

Private Attributes

MathExpr dyn_expr
 
MathExpr st_expr
 
std::unordered_map< std::string, const statistics::Info * > statsMap
 

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. More...
 
static SimObjectfind (const char *name)
 Find the SimObject with the given name and return a pointer to it. More...
 
static void setSimObjectResolver (SimObjectResolver *resolver)
 There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...
 
static SimObjectResolvergetSimObjectResolver ()
 There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...
 
- Static Public Member Functions inherited from gem5::Serializable
static const std::string & currentSection ()
 Gets the fully-qualified name of the active section. More...
 
static void generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
 Generate a checkpoint file so that the serialization can be routed to it. More...
 
- Protected Member Functions inherited from gem5::Drainable
 Drainable ()
 
virtual ~Drainable ()
 
virtual void drainResume ()
 Resume execution after a successful drain. More...
 
void signalDrainDone () const
 Signal that an object is drained. More...
 
- Protected Attributes inherited from gem5::PowerModelState
Temperature _temp
 Current temperature. More...
 
ClockedObjectclocked_object
 The clocked object we belong to. More...
 
statistics::Value dynamicPower
 
statistics::Value staticPower
 
- Protected Attributes inherited from gem5::SimObject
const SimObjectParams & _params
 Cached copy of the object parameters. More...
 
- Protected Attributes inherited from gem5::EventManager
EventQueueeventq
 A pointer to this object's event queue. More...
 

Detailed Description

A Equation power model.

The power is represented as a combination of some stats and automatic variables (like temperature).

Definition at line 60 of file mathexpr_powermodel.hh.

Member Typedef Documentation

◆ Params

typedef MathExprPowerModelParams gem5::MathExprPowerModel::Params

Definition at line 64 of file mathexpr_powermodel.hh.

Constructor & Destructor Documentation

◆ MathExprPowerModel()

gem5::MathExprPowerModel::MathExprPowerModel ( const Params p)

Definition at line 51 of file mathexpr_powermodel.cc.

Member Function Documentation

◆ eval()

double gem5::MathExprPowerModel::eval ( const MathExpr expr) const
private

Evaluate an expression in the context of this object, fatal if evaluation fails.

Parameters
exprExpression to evaluate
Returns
Value of expression.

Definition at line 77 of file mathexpr_powermodel.cc.

References gem5::MathExpr::eval(), and getStatValue().

Referenced by getDynamicPower(), and getStaticPower().

◆ getDynamicPower()

double gem5::MathExprPowerModel::getDynamicPower ( ) const
inlineoverridevirtual

Get the dynamic power consumption.

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

Implements gem5::PowerModelState.

Definition at line 72 of file mathexpr_powermodel.hh.

References dyn_expr, and eval().

◆ getStaticPower()

double gem5::MathExprPowerModel::getStaticPower ( ) const
inlineoverridevirtual

Get the static power consumption.

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

Implements gem5::PowerModelState.

Definition at line 79 of file mathexpr_powermodel.hh.

References eval(), and st_expr.

◆ getStatValue()

double gem5::MathExprPowerModel::getStatValue ( const std::string &  name) const

Get the value for a variable (maps to a stat)

Parameters
nameName of the variable to retrieve the value from
Returns
Power (Watts) consumed by this object (static component)

Definition at line 86 of file mathexpr_powermodel.cc.

References gem5::PowerModelState::_temp, gem5::PowerModelState::clocked_object, gem5::Clocked::clockPeriod(), gem5::ArmISA::fi, gem5::Named::name(), panic, gem5::ArmISA::si, statsMap, gem5::Temperature::toCelsius(), and gem5::Clocked::voltage().

Referenced by eval().

◆ regStats()

void gem5::MathExprPowerModel::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 gem5::statistics::Group.

Definition at line 115 of file mathexpr_powermodel.cc.

References gem5::statistics::Group::regStats().

◆ startup()

void gem5::MathExprPowerModel::startup ( )
overridevirtual

startup() is the final initialization call before simulation.

All state is initialized (including unserialized state, if any, such as the curTick() value), so this is the appropriate place to schedule initial event(s) for objects that need them.

Reimplemented from gem5::SimObject.

Definition at line 57 of file mathexpr_powermodel.cc.

References dyn_expr, fatal_if, gem5::statistics::resolve(), st_expr, and statsMap.

Member Data Documentation

◆ dyn_expr

MathExpr gem5::MathExprPowerModel::dyn_expr
private

Definition at line 104 of file mathexpr_powermodel.hh.

Referenced by getDynamicPower(), and startup().

◆ st_expr

MathExpr gem5::MathExprPowerModel::st_expr
private

Definition at line 104 of file mathexpr_powermodel.hh.

Referenced by getStaticPower(), and startup().

◆ statsMap

std::unordered_map<std::string, const statistics::Info*> gem5::MathExprPowerModel::statsMap
private

Definition at line 107 of file mathexpr_powermodel.hh.

Referenced by getStatValue(), and startup().


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

Generated on Tue Sep 21 2021 12:27:45 for gem5 by doxygen 1.8.17