Implementation of the bloom filter, as described in "Bulk Disambiguation of Speculative Threads in Multiprocessors", by Ceze, Luis, et al. More...
#include <bulk_bloom_filter.hh>
Inheritance diagram for BloomFilter::Bulk:
Public Member Functions | |
| Bulk (const BloomFilterBulkParams *p) | |
| ~Bulk () | |
 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 Params * | params () 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... | |
| ProbeManager * | getProbeManager () |
| Get the probe manager for this object. More... | |
| virtual Port & | getPort (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 | |
| 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. 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 Info * | resolveStat (std::string name) const |
| Resolve a stat by its name within this group. More... | |
| Group ()=delete | |
| Group (const Group &)=delete | |
| Group & | operator= (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... | |
Private Member Functions | |
| Addr | permute (Addr addr) const |
| Permutes the address to generate its signature. More... | |
Private Attributes | |
| const int | sectorBits |
| Number of bits used per sector. 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 SimObject * | find (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< SatCounter > | filter |
| 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 | |
| EventQueue * | eventq |
| A pointer to this object's event queue. More... | |
Detailed Description
Implementation of the bloom filter, as described in "Bulk Disambiguation of Speculative Threads in Multiprocessors", by Ceze, Luis, et al.
The number of hashes indicates the number of c bitfields.
Definition at line 44 of file bulk_bloom_filter.hh.
Constructor & Destructor Documentation
◆ Bulk()
| BloomFilter::Bulk::Bulk | ( | const BloomFilterBulkParams * | p | ) |
Definition at line 40 of file bulk_bloom_filter.cc.
References fatal_if, BloomFilter::MultiBitSel::numHashes, BloomFilter::Base::offsetBits, and sectorBits.
◆ ~Bulk()
| BloomFilter::Bulk::~Bulk | ( | ) |
Definition at line 48 of file bulk_bloom_filter.cc.
Member Function Documentation
◆ hash()
|
overrideprotectedvirtual |
Apply the selected the hash functions to an address.
- Parameters
-
addr The address to hash. hash_number Index of the hash function to be used.
Reimplemented from BloomFilter::MultiBitSel.
Definition at line 53 of file bulk_bloom_filter.cc.
References addr, bits(), ArmISA::c, BloomFilter::Base::filter, BloomFilter::MultiBitSel::numHashes, BloomFilter::Base::offsetBits, permute(), and sectorBits.
◆ permute()
Permutes the address to generate its signature.
Definition at line 70 of file bulk_bloom_filter.cc.
References addr, bits(), and BloomFilter::Base::offsetBits.
Referenced by hash().
Member Data Documentation
◆ sectorBits
|
private |
Number of bits used per sector.
The filter is split into sectors, each of which with its own hash function. When an address is hashed all sectors are parsed to generate c indexes. These indexes are then used to find the respective v indexes in the main filter.
Definition at line 63 of file bulk_bloom_filter.hh.
The documentation for this class was generated from the following files:
- base/filters/bulk_bloom_filter.hh
- base/filters/bulk_bloom_filter.cc