gem5  v20.1.0.0
Classes | Public Types | Public Member Functions | List of all members
LFURP Class Reference

#include <lfu_rp.hh>

Inheritance diagram for LFURP:
BaseReplacementPolicy SimObject EventManager Serializable Drainable Stats::Group

Classes

struct  LFUReplData
 LFU-specific implementation of replacement data. More...
 

Public Types

typedef LFURPParams Params
 Convenience typedef. More...
 
- Public Types inherited from BaseReplacementPolicy
typedef BaseReplacementPolicyParams Params
 Convenience typedef. More...
 
- Public Types inherited from SimObject
typedef SimObjectParams Params
 

Public Member Functions

 LFURP (const Params *p)
 Construct and initiliaze this replacement policy. More...
 
 ~LFURP ()
 Destructor. More...
 
void invalidate (const std::shared_ptr< ReplacementData > &replacement_data) const override
 Invalidate replacement data to set it as the next probable victim. More...
 
void touch (const std::shared_ptr< ReplacementData > &replacement_data) const override
 Touch an entry to update its replacement data. More...
 
void reset (const std::shared_ptr< ReplacementData > &replacement_data) const override
 Reset replacement data. More...
 
ReplaceableEntrygetVictim (const ReplacementCandidates &candidates) const override
 Find replacement victim using reference frequency. More...
 
std::shared_ptr< ReplacementDatainstantiateEntry () override
 Instantiate a replacement data entry. More...
 
- Public Member Functions inherited from BaseReplacementPolicy
 BaseReplacementPolicy (const Params *p)
 Construct and initiliaze this replacement policy. More...
 
virtual ~BaseReplacementPolicy ()
 Destructor. More...
 
- Public Member Functions inherited from SimObject
const Paramsparams () const
 
 SimObject (const Params *_params)
 
virtual ~SimObject ()
 
virtual const std::string name () const
 
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...
 
virtual void startup ()
 startup() is the final initialization call before simulation. 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 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 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 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 Stats::Group
 Group (Group *parent, const char *name=nullptr)
 Construct a new statistics group. More...
 
virtual ~Group ()
 
virtual void regStats ()
 Callback to set stat parameters. More...
 
virtual void resetStats ()
 Callback to reset stats. More...
 
virtual void preDumpStats ()
 Callback before stats are dumped. More...
 
void addStat (Stats::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...
 
 Group ()=delete
 
 Group (const Group &)=delete
 
Groupoperator= (const Group &)=delete
 

Additional Inherited Members

- Static Public Member Functions inherited from SimObject
static void serializeAll (CheckpointOut &cp)
 Serialize 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 Public Member Functions inherited from Serializable
static const std::string & currentSection ()
 Gets the fully-qualified name of the active section. More...
 
static void serializeAll (const std::string &cpt_dir)
 Serializes all the SimObjects. More...
 
static void unserializeGlobals (CheckpointIn &cp)
 
- Protected Member Functions inherited from 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 SimObject
const SimObjectParams * _params
 Cached copy of the object parameters. More...
 
- Protected Attributes inherited from EventManager
EventQueueeventq
 A pointer to this object's event queue. More...
 

Detailed Description

Definition at line 44 of file lfu_rp.hh.

Member Typedef Documentation

◆ Params

typedef LFURPParams LFURP::Params

Convenience typedef.

Definition at line 61 of file lfu_rp.hh.

Constructor & Destructor Documentation

◆ LFURP()

LFURP::LFURP ( const Params p)

Construct and initiliaze this replacement policy.

Copyright (c) 2018 Inria All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer; redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution; neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Definition at line 36 of file lfu_rp.cc.

◆ ~LFURP()

LFURP::~LFURP ( )
inline

Destructor.

Definition at line 71 of file lfu_rp.hh.

Member Function Documentation

◆ getVictim()

ReplaceableEntry * LFURP::getVictim ( const ReplacementCandidates candidates) const
overridevirtual

Find replacement victim using reference frequency.

Parameters
candsReplacement candidates, selected by indexing policy.
Returns
Replacement entry to be replaced.

Implements BaseReplacementPolicy.

Definition at line 64 of file lfu_rp.cc.

References ReplaceableEntry::replacementData.

◆ instantiateEntry()

std::shared_ptr< ReplacementData > LFURP::instantiateEntry ( )
overridevirtual

Instantiate a replacement data entry.

Returns
A shared pointer to the new replacement data.

Implements BaseReplacementPolicy.

Definition at line 85 of file lfu_rp.cc.

◆ invalidate()

void LFURP::invalidate ( const std::shared_ptr< ReplacementData > &  replacement_data) const
overridevirtual

Invalidate replacement data to set it as the next probable victim.

Clear the number of references.

Parameters
replacement_dataReplacement data to be invalidated.

Implements BaseReplacementPolicy.

Definition at line 42 of file lfu_rp.cc.

◆ reset()

void LFURP::reset ( const std::shared_ptr< ReplacementData > &  replacement_data) const
overridevirtual

Reset replacement data.

Used when an entry is inserted. Reset number of references.

Parameters
replacement_dataReplacement data to be reset.

Implements BaseReplacementPolicy.

Definition at line 57 of file lfu_rp.cc.

◆ touch()

void LFURP::touch ( const std::shared_ptr< ReplacementData > &  replacement_data) const
overridevirtual

Touch an entry to update its replacement data.

Increase number of references.

Parameters
replacement_dataReplacement data to be touched.

Implements BaseReplacementPolicy.

Definition at line 50 of file lfu_rp.cc.


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

Generated on Wed Sep 30 2020 14:02:26 for gem5 by doxygen 1.8.17