allows testing of methods without having all the other components live More...

#include <testStore.h>

Inheritance diagram for StoreControllerStub:

[legend]

Collaboration diagram for StoreControllerStub:

[legend]

Public Member Functions
	StoreControllerStub ()

int	callback () override
	called once every main loop iteration; TODO: Move to UFS code. More...

virtual StoreEntry *	get (const cache_key *)

virtual void	get (String, void()(StoreEntry , void ), void )

void	init () override

void	maintain () override
	perform regular periodic maintenance; TODO: move to UFSSwapDir::Maintain More...

uint64_t	maxSize () const override

uint64_t	minSize () const override
	the minimum size the store will shrink to via normal housekeeping More...

uint64_t	currentSize () const override
	current size More...

uint64_t	currentCount () const override
	the total number of objects stored right now More...

int64_t	maxObjectSize () const override
	the maximum size of a storable object; -1 if unlimited More...

void	getStats (StoreInfoStats &) const override
	collect statistics More...

void	stat (StoreEntry &) const override

virtual void	reference (StoreEntry &)

virtual bool	dereference (StoreEntry &)

virtual StoreSearch *	search ()

void	create () override
	create system resources needed for this store to operate in the future More...

void	sync () override
	prepare for shutdown More...

void	evictCached (StoreEntry &) override

void	evictIfFound (const cache_key *) override

StoreEntry *	find (const cache_key *)

StoreEntry *	peek (const cache_key *)

StoreEntry *	findCallbackXXX (const cache_key *)

bool	markedForDeletion (const cache_key *key) const

bool	markedForDeletionAndAbandoned (const StoreEntry &) const

bool	hasReadableDiskEntry (const StoreEntry &) const
	whether there is a disk entry with e.key More...

int64_t	accumulateMore (StoreEntry &) const

void	configure ()
	update configuration, including limits (re)calculation More...

void	handleIdleEntry (StoreEntry &)
	called when the entry is no longer needed by any transaction More...

void	freeMemorySpace (const int spaceRequired)

void	memoryOut (StoreEntry &, const bool preserveSwappable)
	called to get rid of no longer needed entry data in RAM, if any More...

bool	updateOnNotModified (StoreEntry *old, StoreEntry &e304)

bool	allowCollapsing (StoreEntry *, const RequestFlags &, const HttpRequestMethod &)
	tries to make the entry available for collapsing future requests More...

void	addReading (StoreEntry , const cache_key )

void	addWriting (StoreEntry , const cache_key )

bool	transientsReader (const StoreEntry &) const
	whether the entry is in "reading from Transients" I/O state More...

bool	transientsWriter (const StoreEntry &) const
	whether the entry is in "writing to Transients" I/O state More...

void	syncCollapsed (const sfileno)
	Update local intransit entry after changes made by appending worker. More...

void	noteStoppedSharedWriting (StoreEntry &)
	adjust shared state after this worker stopped changing the entry More...

int	transientReaders (const StoreEntry &) const
	number of the transient entry readers some time ago More...

void	transientsDisconnect (StoreEntry &)
	disassociates the entry from the intransit table More...

void	memoryDisconnect (StoreEntry &)
	disassociates the entry from the memory cache, preserving cached data More...

Static Public Member Functions
static bool	SmpAware ()
	whether there are any SMP-aware storages More...

Public Attributes
bool	statsCalled

Static Public Attributes
static int	store_dirs_rebuilding = 1
	the number of cache_dirs being rebuilt; TODO: move to Disks::Rebuilding More...

Private Member Functions
bool	memoryCacheHasSpaceFor (const int pagesRequired) const
	whether the memory cache is allowed to store that many additional pages More...

void	referenceBusy (StoreEntry &e)
	update reference counters of the recently touched entry More...

bool	dereferenceIdle (StoreEntry &, bool wantsLocalMemory)

void	allowSharing (StoreEntry &, const cache_key *)
	indexes and adds SMP-tracking for an ephemeral peek() result More...

StoreEntry *	peekAtLocal (const cache_key *)

void	memoryEvictCached (StoreEntry &)

void	transientsUnlinkByKeyIfFound (const cache_key *)

bool	keepForLocalMemoryCache (StoreEntry &e) const
	whether e should be kept in local RAM for possible future caching More...

bool	anchorToCache (StoreEntry &)

void	checkTransients (const StoreEntry &) const

void	checkFoundCandidate (const StoreEntry &) const
	flags problematic entries before find() commits to finalizing/returning them More...

Private Attributes
Disks *	swapDir
	summary view of all disk caches More...

Memory *	sharedMemStore
	memory cache that multiple workers can use More...

bool	localMemStore
	whether local (non-shared) memory cache is enabled More...

Transients *	transients

int	memoryPagesDebt_ = 0
	Hack: Relays page shortage from freeMemorySpace() to handleIdleEntry(). More...

Detailed Description

Definition at line 42 of file testStore.h.

Constructor & Destructor Documentation

◆ StoreControllerStub()

StoreControllerStub::StoreControllerStub ( )

inline

Definition at line 46 of file testStore.h.

Member Function Documentation

◆ accumulateMore()

int64_t Store::Controller::accumulateMore ( StoreEntry & entry ) const

inherited

Additional unknown-size entry bytes required by Store in order to reduce the risk of selecting the wrong disk cache for the growing entry.

Definition at line 480 of file Controller.cc.

Referenced by StoreEntry::mayStartSwapOut().

◆ addReading()

void Store::Controller::addReading	(	StoreEntry *	e,
		const cache_key *	key
	)

inherited

register a being-read StoreEntry (to optimize concurrent cache reads and to receive remote DELETE events)

Definition at line 753 of file Controller.cc.

References StoreEntry::hashInsert(), and Store::ioReading.

◆ addWriting()

void Store::Controller::addWriting	(	StoreEntry *	e,
		const cache_key *	key
	)

inherited

register a being-written StoreEntry (to support concurrent cache reads and to receive remote DELETE events)

Definition at line 761 of file Controller.cc.

References assert, EBIT_TEST, ENTRY_SPECIAL, StoreEntry::flags, and Store::ioWriting.

Referenced by StoreEntry::setPublicKey().

◆ allowCollapsing()

bool Store::Controller::allowCollapsing	(	StoreEntry *	e,
		const RequestFlags &	reqFlags,
		const HttpRequestMethod &
	)

inherited

Definition at line 735 of file Controller.cc.

References assert, debugs, StoreEntry::hasTransients(), StoreEntry::hittingRequiresCollapsing(), ksDefault, ksRevalidation, StoreEntry::makePublic(), RequestFlags::refresh, and StoreEntry::setCollapsingRequirement().

Referenced by clientReplyContext::createStoreEntry().

◆ allowSharing()

void Store::Controller::allowSharing	(	StoreEntry &	entry,
		const cache_key *	key
	)

privateinherited

Definition at line 370 of file Controller.cc.

References DBG_IMPORTANT, debugs, StoreEntry::hasTransients(), Here, and StoreEntry::hittingRequiresCollapsing().

◆ anchorToCache()

bool Store::Controller::anchorToCache ( StoreEntry & entry )

privateinherited

If possible and has not been done, associates the entry with its store(s).

Returns: false for not-yet-cached entries that we may attach later; true for other entries after synchronizing them with their store

Definition at line 872 of file Controller.cc.

References assert, debugs, StoreEntry::hasDisk(), StoreEntry::hasMemStore(), StoreEntry::hasTransients(), Transients::EntryStatus::hasWriter, Here, MemObject::MemCache::io, MemObject::ioDone, StoreEntry::mem(), MemObject::memCache, StoreEntry::setCollapsingRequirement(), and Transients::EntryStatus::waitingToBeFreed.

◆ callback()

int StoreControllerStub::callback ( )

overridevirtual

Reimplemented from Store::Controller.

Definition at line 20 of file testStore.cc.

◆ checkFoundCandidate()

void Store::Controller::checkFoundCandidate ( const StoreEntry & entry ) const

privateinherited

Definition at line 328 of file Controller.cc.

References StoreEntry::hasTransients(), Here, StoreEntry::hittingRequiresCollapsing(), StoreEntry::isAccepting(), and StoreEntry::locked().

◆ checkTransients()

void Store::Controller::checkTransients ( const StoreEntry & e ) const

privateinherited

Definition at line 926 of file Controller.cc.

References assert, EBIT_TEST, ENTRY_SPECIAL, StoreEntry::flags, and StoreEntry::hasTransients().

◆ configure()

void Store::Controller::configure ( )

inherited

Definition at line 194 of file Controller.cc.

References Config, SquidConfig::highWaterMark, SquidConfig::lowWaterMark, max(), SquidConfig::maxInMemObjSize, SquidConfig::memMaxSize, min(), SquidConfig::Store, store_maxobjsize, store_pages_max, store_swap_high, store_swap_low, and SquidConfig::Swap.

Referenced by storeConfigure().

◆ create()

void Store::Controller::create ( )

overridevirtualinherited

Implements Store::Storage.

Definition at line 78 of file Controller.cc.

References pid, and WaitForAnyPid().

Referenced by SquidMain().

◆ currentCount()

uint64_t StoreControllerStub::currentCount ( ) const

overridevirtual

Reimplemented from Store::Controller.

Definition at line 58 of file testStore.cc.

◆ currentSize()

uint64_t StoreControllerStub::currentSize ( ) const

overridevirtual

Reimplemented from Store::Controller.

Definition at line 52 of file testStore.cc.

◆ dereference()

virtual bool StoreControllerStub::dereference ( StoreEntry & )

inlinevirtual

Definition at line 76 of file testStore.h.

◆ dereferenceIdle()

bool Store::Controller::dereferenceIdle	(	StoreEntry &	e,
		bool	wantsLocalMemory
	)

privateinherited

dereference()s an idle entry

Returns: false if and only if the entry should be deleted

Definition at line 262 of file Controller.cc.

References RemovalPolicy::Dereferenced, EBIT_TEST, ENTRY_SPECIAL, StoreEntry::flags, StoreEntry::hasDisk(), StoreEntry::hittingRequiresCollapsing(), IN_MEMORY, KEY_PRIVATE, StoreEntry::mem_obj, mem_policy, StoreEntry::mem_status, and MemObject::repl.

◆ evictCached()

void Store::Controller::evictCached ( StoreEntry & e )

overridevirtualinherited

Prevent new get() calls from returning the matching entry. If the matching entry is unused, it may be removed from the store now. The store entry is matched using either e attachment info or e.key.

Implements Store::Storage.

Definition at line 490 of file Controller.cc.

References debugs.

Referenced by StoreEntry::release(), and StoreEntry::setPrivateKey().

◆ evictIfFound()

void Store::Controller::evictIfFound ( const cache_key * )

overridevirtualinherited

An evictCached() equivalent for callers that did not get() a StoreEntry. Callers with StoreEntry objects must use evictCached() instead.

Implements Store::Storage.

Definition at line 501 of file Controller.cc.

References debugs, and storeKeyText().

Referenced by purgeEntriesByUrl().

◆ find()

StoreEntry * Store::Controller::find ( const cache_key * key )

inherited

Returns: a locally indexed and SMP-tracked matching StoreEntry (or nil) Slower than peek() but does not restrict StoreEntry use and storage. Counts as an entry reference from the removal policy p.o.v.

Definition at line 349 of file Controller.cc.

References debugs.

Referenced by storeGetPublic(), and storeGetPublicByRequestMethod().

◆ findCallbackXXX()

StoreEntry * Store::Controller::findCallbackXXX ( const cache_key * key )

inherited

Returns: matching StoreEntry associated with local ICP/HTCP transaction Warning: The returned StoreEntry is not synced and may be marked for deletion. It can only be used for extracting transaction callback details. New code should be designed to avoid this deprecated API.

Definition at line 395 of file Controller.cc.

References hash_lookup(), and store_table.

Referenced by neighborsHtcpReply().

◆ freeMemorySpace()

void Store::Controller::freeMemorySpace ( const int spaceRequired )

inherited

Evict memory cache entries to free at least spaceRequired bytes. Should be called via storeGetMemSpace(). Unreliable: Fails if enough victims cannot be found fast enough.

Definition at line 530 of file Controller.cc.

References debugs, hot_obj_count, mem_policy, RemovalPolicy::PurgeInit, SM_PAGE_SIZE, and squid_curtime.

Referenced by storeGetMemSpace().

◆ get() [1/2]

StoreEntry * StoreControllerStub::get ( const cache_key * )

virtual

Definition at line 26 of file testStore.cc.

◆ get() [2/2]

void StoreControllerStub::get	(	String	,
		void()(StoreEntry , void *)	,
		void *
	)

virtual

Definition at line 32 of file testStore.cc.

◆ getStats()

void StoreControllerStub::getStats ( StoreInfoStats & stats ) const

overridevirtual

Reimplemented from Store::Controller.

Definition at line 70 of file testStore.cc.

◆ handleIdleEntry()

void Store::Controller::handleIdleEntry ( StoreEntry & e )

inherited

Definition at line 646 of file Controller.cc.

References assert, debugs, destroyStoreEntry, EBIT_TEST, ENTRY_SPECIAL, StoreEntry::flags, IN_MEMORY, KEY_PRIVATE, StoreEntry::mem_obj, StoreEntry::release(), StoreEntry::setMemStatus(), StoreEntry::swappedOut(), and MemObject::unlinkRequest().

Referenced by StoreEntry::doAbandon().

◆ hasReadableDiskEntry()

bool Store::Controller::hasReadableDiskEntry ( const StoreEntry & e ) const

inherited

Definition at line 321 of file Controller.cc.

◆ init()

void StoreControllerStub::init ( )

overridevirtual

Start preparing the store for use. To check readiness, callers should use readable() and writable() methods.

Reimplemented from Store::Controller.

Definition at line 36 of file testStore.cc.

◆ keepForLocalMemoryCache()

bool Store::Controller::keepForLocalMemoryCache ( StoreEntry & e ) const

privateinherited

Definition at line 572 of file Controller.cc.

References assert, Config, MemObject::endOffset(), MemObject::expectedReplySize(), max(), SquidConfig::maxInMemObjSize, StoreEntry::mem_obj, SquidConfig::memMaxSize, StoreEntry::memoryCachable(), min(), and SquidConfig::Store.

◆ maintain()

void StoreControllerStub::maintain ( )

inlineoverridevirtual

Reimplemented from Store::Controller.

Definition at line 58 of file testStore.h.

◆ markedForDeletion()

bool Store::Controller::markedForDeletion ( const cache_key * key ) const

inherited

Whether a transient entry with the given public key exists and (but) was marked for removal some time ago; get(key) returns nil in such cases.

Definition at line 305 of file Controller.cc.

Referenced by Ipc::StoreMapAnchor::setKey().

◆ markedForDeletionAndAbandoned()

bool Store::Controller::markedForDeletionAndAbandoned ( const StoreEntry & e ) const

inherited

markedForDeletion() with no readers this is one method because the two conditions must be checked in the right order

Definition at line 312 of file Controller.cc.

References hash_link::key.

◆ maxObjectSize()

int64_t StoreControllerStub::maxObjectSize ( ) const

overridevirtual

Reimplemented from Store::Controller.

Definition at line 64 of file testStore.cc.

◆ maxSize()

uint64_t StoreControllerStub::maxSize ( ) const

overridevirtual

The maximum size the store will support in normal use. Inaccuracy is permitted, but may throw estimates for memory etc out of whack.

Reimplemented from Store::Controller.

Definition at line 40 of file testStore.cc.

◆ memoryCacheHasSpaceFor()

bool Store::Controller::memoryCacheHasSpaceFor ( const int pagesRequired ) const

privateinherited

Definition at line 521 of file Controller.cc.

References debugs, mem_node::InUseCount(), and store_pages_max.

◆ memoryDisconnect()

void Store::Controller::memoryDisconnect ( StoreEntry & e )

inherited

Definition at line 617 of file Controller.cc.

Referenced by StoreEntry::destroyMemObject().

◆ memoryEvictCached()

void Store::Controller::memoryEvictCached ( StoreEntry & e )

privateinherited

removes the entry from the memory cache XXX: Dangerous side effect: Unlocked entries lose their mem_obj.

Definition at line 606 of file Controller.cc.

References StoreEntry::destroyMemObject(), and StoreEntry::locked().

◆ memoryOut()

void Store::Controller::memoryOut	(	StoreEntry &	e,
		const bool	preserveSwappable
	)

inherited

Definition at line 589 of file Controller.cc.

References debugs, and StoreEntry::trimMemory().

Referenced by StoreEntry::swapOut().

◆ minSize()

uint64_t StoreControllerStub::minSize ( ) const

overridevirtual

Reimplemented from Store::Controller.

Definition at line 46 of file testStore.cc.

◆ noteStoppedSharedWriting()

void Store::Controller::noteStoppedSharedWriting ( StoreEntry & e )

inherited

Definition at line 625 of file Controller.cc.

References StoreEntry::hasTransients().

Referenced by StoreEntry::storeWritingCheckpoint().

◆ peek()

StoreEntry * Store::Controller::peek ( const cache_key * key )

inherited

Returns: a matching StoreEntry not suitable for long-term use (or nil) Faster than find() but the returned entry may not receive updates, may lack information from some of the Stores, and should not be updated except that purging peek()ed entries is supported. Does not count as an entry reference from the removal policy p.o.v.

Definition at line 427 of file Controller.cc.

References debugs, and storeKeyText().

◆ peekAtLocal()

StoreEntry * Store::Controller::peekAtLocal ( const cache_key * key )

privateinherited

Returns: either an existing local reusable StoreEntry object or nil To treat remotely marked entries specially, callers ought to check markedForDeletion() first!

Definition at line 411 of file Controller.cc.

References assert, EBIT_TEST, hash_lookup(), KEY_PRIVATE, and store_table.

◆ reference()

virtual void StoreControllerStub::reference ( StoreEntry & )

inlinevirtual

Definition at line 74 of file testStore.h.

◆ referenceBusy()

void Store::Controller::referenceBusy ( StoreEntry & e )

privateinherited

Definition at line 237 of file Controller.cc.

References EBIT_TEST, ENTRY_SPECIAL, StoreEntry::flags, StoreEntry::hasDisk(), IN_MEMORY, StoreEntry::mem_obj, mem_policy, StoreEntry::mem_status, RemovalPolicy::Referenced, and MemObject::repl.

◆ search()

StoreSearch * StoreControllerStub::search ( )

virtual

Definition at line 81 of file testStore.cc.

◆ SmpAware()

bool Store::Controller::SmpAware ( )

staticinherited

Definition at line 920 of file Controller.cc.

References MemStore::Enabled(), and Store::Disks::SmpAware().

Referenced by Transients::EntryLimit(), and clientReplyContext::processExpired().

◆ stat()

void StoreControllerStub::stat ( StoreEntry & e ) const

overridevirtual

Output stats to the provided store entry. TODO: make these calls asynchronous

Reimplemented from Store::Controller.

Definition at line 75 of file testStore.cc.

References statsCalled.

◆ sync()

void Store::Controller::sync ( void )

overridevirtualinherited

Reimplemented from Store::Storage.

Definition at line 218 of file Controller.cc.

Referenced by SquidShutdown().

◆ syncCollapsed()

void Store::Controller::syncCollapsed ( const sfileno xitIndex )

inherited

◆ transientReaders()

int Store::Controller::transientReaders ( const StoreEntry & e ) const

inherited

Definition at line 632 of file Controller.cc.

References StoreEntry::hasTransients().

Referenced by CollapsedForwarding::Broadcast().

◆ transientsDisconnect()

void Store::Controller::transientsDisconnect ( StoreEntry & e )

inherited

Definition at line 639 of file Controller.cc.

Referenced by StoreEntry::destroyMemObject().

◆ transientsReader()

bool Store::Controller::transientsReader ( const StoreEntry & e ) const

inherited

Definition at line 468 of file Controller.cc.

References StoreEntry::hasTransients().

◆ transientsUnlinkByKeyIfFound()

void Store::Controller::transientsUnlinkByKeyIfFound ( const cache_key * )

privateinherited

◆ transientsWriter()

bool Store::Controller::transientsWriter ( const StoreEntry & e ) const

inherited

Definition at line 474 of file Controller.cc.

References StoreEntry::hasTransients().

◆ updateOnNotModified()

bool Store::Controller::updateOnNotModified	(	StoreEntry *	old,
		StoreEntry &	e304
	)

inherited

using a 304 response, update the old entry (metadata and reply headers)

Returns: whether the old entry can be used (and is considered fresh)

Definition at line 695 of file Controller.cc.

References MemObject::appliedUpdates, CurrentException(), DBG_IMPORTANT, debugs, EBIT_TEST, ENTRY_SPECIAL, StoreEntry::flags, IN_MEMORY, StoreEntry::mem_obj, StoreEntry::mem_status, Must, StoreEntry::swap_dirn, and StoreEntry::updateOnNotModified().

Member Data Documentation

◆ localMemStore

bool Store::Controller::localMemStore

privateinherited

Definition at line 154 of file Controller.h.

◆ memoryPagesDebt_

int Store::Controller::memoryPagesDebt_ = 0

privateinherited

Definition at line 162 of file Controller.h.

◆ sharedMemStore

Memory* Store::Controller::sharedMemStore

privateinherited

Definition at line 153 of file Controller.h.

◆ statsCalled

bool StoreControllerStub::statsCalled

Definition at line 48 of file testStore.h.

Referenced by stat(), and TestStore::testStats().

◆ store_dirs_rebuilding

int Store::Controller::store_dirs_rebuilding = 1

staticinherited

Definition at line 134 of file Controller.h.

Referenced by Store::Disks::configure(), Fs::Ufs::UFSSwapDir::HandleCleanEvent(), icpGetCommonOpcode(), Store::Disks::init(), Fs::Ufs::UFSSwapDir::maintain(), StoreEntry::release(), storeCleanup(), storeDirWriteCleanLogs(), TestRock::storeInit(), storeLateRelease(), storeRebuildComplete(), Rock::Rebuild::swanSong(), TestUfs::testUfsSearch(), wccp2HereIam(), and Fs::Ufs::UFSSwapDir::writeCleanDone().

◆ swapDir

Disks* Store::Controller::swapDir

privateinherited

Definition at line 152 of file Controller.h.

◆ transients

Transients* Store::Controller::transients

privateinherited

A shared table of public store entries that do not know whether they will belong to a memory cache, a disk cache, or will be uncachable when the response header comes. Used for SMP collapsed forwarding.

Definition at line 159 of file Controller.h.

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

src/tests/testStore.h
src/tests/testStore.cc

squid-cache.org

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Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ StoreControllerStub()

Member Function Documentation

◆ accumulateMore()

◆ addReading()

◆ addWriting()

◆ allowCollapsing()

◆ allowSharing()

◆ anchorToCache()

◆ callback()

◆ checkFoundCandidate()

◆ checkTransients()

◆ configure()

◆ create()

◆ currentCount()

◆ currentSize()

◆ dereference()

◆ dereferenceIdle()

◆ evictCached()

◆ evictIfFound()

◆ find()

◆ findCallbackXXX()

◆ freeMemorySpace()

◆ get() [1/2]

◆ get() [2/2]

◆ getStats()

◆ handleIdleEntry()

◆ hasReadableDiskEntry()

◆ init()

◆ keepForLocalMemoryCache()

◆ maintain()

◆ markedForDeletion()

◆ markedForDeletionAndAbandoned()

◆ maxObjectSize()

◆ maxSize()

◆ memoryCacheHasSpaceFor()

◆ memoryDisconnect()

◆ memoryEvictCached()

◆ memoryOut()

◆ minSize()

◆ noteStoppedSharedWriting()

◆ peek()

◆ peekAtLocal()

◆ reference()

◆ referenceBusy()

◆ search()

◆ SmpAware()

◆ stat()

◆ sync()

◆ syncCollapsed()

◆ transientReaders()

◆ transientsDisconnect()

◆ transientsReader()

◆ transientsUnlinkByKeyIfFound()

◆ transientsWriter()

◆ updateOnNotModified()

Member Data Documentation

◆ localMemStore

◆ memoryPagesDebt_

◆ sharedMemStore

◆ statsCalled

◆ store_dirs_rebuilding

◆ swapDir

◆ transients

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