gem5  v20.1.0.0
Public Member Functions | Protected Member Functions | List of all members
BloomFilter::H3 Class Reference

Implementation of the bloom filter as described in "Implementing Signatures for Transactional Memory", by Sanchez, Daniel, et al. More...

#include <h3_bloom_filter.hh>

Inheritance diagram for BloomFilter::H3:
BloomFilter::MultiBitSel BloomFilter::Base SimObject EventManager Serializable Drainable Stats::Group

Public Member Functions

 H3 (const BloomFilterH3Params *p)
 
 ~H3 ()
 
- Public Member Functions inherited from BloomFilter::MultiBitSel
 MultiBitSel (const BloomFilterMultiBitSelParams *p)
 
 ~MultiBitSel ()
 
void set (Addr addr) override
 Perform the filter specific function to set the corresponding entries (can be multiple) of an address. More...
 
int getCount (Addr addr) const override
 Get the value stored in the corresponding filter entry of an address. More...
 
- Public Member Functions inherited from BloomFilter::Base
 Base (const BloomFilterBaseParams *p)
 Create and clear the filter. More...
 
virtual ~Base ()
 
virtual void clear ()
 Clear the filter by resetting all values. More...
 
virtual void merge (const Base *other)
 Merges the contents of both filters into this' (Bloom Filter union). More...
 
virtual void unset (Addr addr)
 Perform the filter specific function to clear the corresponding entries (can be multiple) of an address. More...
 
virtual bool isSet (Addr addr) const
 Check if the corresponding filter entries of an address should be considered as set. More...
 
virtual int getTotalCount () const
 Get the total value stored in the filter entries. 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
 

Protected Member Functions

int hash (Addr addr, int hash_number) const override
 Apply the selected the hash functions to an address. More...
 
- 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...
 

Additional Inherited Members

- Public Types inherited from SimObject
typedef SimObjectParams Params
 
- 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 Attributes inherited from BloomFilter::MultiBitSel
const int numHashes
 Number of hashes. More...
 
const int parFilterSize
 Size of the filter when doing parallel hashing. More...
 
const bool isParallel
 Whether hashing should be performed in parallel. More...
 
- Protected Attributes inherited from BloomFilter::Base
const unsigned offsetBits
 Number of LSB bits to ignore from the the addresses. More...
 
std::vector< SatCounterfilter
 The filter itself. More...
 
const int sizeBits
 Number of bits needed to represent the size of the filter. More...
 
const int setThreshold
 Threshold at which a filter entry starts being considered as set. 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

Implementation of the bloom filter as described in "Implementing Signatures for Transactional Memory", by Sanchez, Daniel, et al.

Definition at line 43 of file h3_bloom_filter.hh.

Constructor & Destructor Documentation

◆ H3()

BloomFilter::H3::H3 ( const BloomFilterH3Params *  p)

Definition at line 362 of file h3_bloom_filter.cc.

References fatal_if, and BloomFilter::MultiBitSel::numHashes.

◆ ~H3()

BloomFilter::H3::~H3 ( )

Definition at line 368 of file h3_bloom_filter.cc.

Member Function Documentation

◆ hash()

int BloomFilter::H3::hash ( Addr  addr,
int  hash_number 
) const
overrideprotectedvirtual

Apply the selected the hash functions to an address.

Parameters
addrThe address to hash.
hash_numberIndex of the hash function to be used.

Reimplemented from BloomFilter::MultiBitSel.

Definition at line 373 of file h3_bloom_filter.cc.

References addr, bits(), BloomFilter::Base::filter, BloomFilter::H3Matrix, ArmISA::i, BloomFilter::MultiBitSel::isParallel, BloomFilter::Base::offsetBits, BloomFilter::MultiBitSel::parFilterSize, and X86ISA::val.


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

Generated on Wed Sep 30 2020 14:02:38 for gem5 by doxygen 1.8.17