SpareAllowanceGiver Class Reference

enforces happy_eyeballs_connect_gap and happy_eyeballs_connect_limit More...

Inheritance diagram for SpareAllowanceGiver:

Collaboration diagram for SpareAllowanceGiver:

Public Member Functions
	SpareAllowanceGiver ()
bool	readyNow (const HappyConnOpener &job) const override
void	jobGotInstantAllowance ()
void	jobUsedAllowance ()
	reacts to HappyConnOpener getting a spare connection opening result
void	jobDroppedAllowance ()
	reacts to HappyConnOpener dropping its spare connection allowance
void	checkpoint ()
	resumes jobs that need resuming (if any)
void	enqueue (HappyConnOpener &)
	starts managing the job's wait; the job should expect a call back
void	dequeue (HappyConnOpener &)
	stops managing the job's wait; cancels the pending callback, if any

Public Attributes
const char *const	name
	waiting event name, for debugging

Protected Member Functions
bool	waiting () const
bool	startedWaiting (const HappyAbsoluteTime lastStart, const int cfgTimeoutMsec) const

Private Member Functions
AsyncCall::Pointer	notify (const CbcPointer< HappyConnOpener > &) override
bool	concurrencyLimitReached () const
	whether opening a spare connection now would violate happy_eyeballs_connect_limit
void	recordAllowance ()
	account for the given allowance
void	forgetAllowance ()
void	noteWaitOver ()

Static Private Member Functions
static void	NoteWaitOver (void *raw)

Private Attributes
HappyAbsoluteTime	lastAllowanceStart = 0
	the time of the last noteSpareAllowance() call
int	concurrencyLevel = 0
HappySpareWaitList	jobs_
	queued jobs waiting their turn
HappyAbsoluteTime	waitEnd_ = 0
	expected NoteWaitOver() call time (or zero)

Detailed Description

Definition at line 112 of file HappyConnOpener.cc.

Constructor & Destructor Documentation

SpareAllowanceGiver()

SpareAllowanceGiver::SpareAllowanceGiver ( )

inline

Definition at line 115 of file HappyConnOpener.cc.

Member Function Documentation

checkpoint()

void HappyOrderEnforcer::checkpoint ( )

inherited

Definition at line 173 of file HappyConnOpener.cc.

References CallBack(), HappyOrderEnforcer::jobs_, and HappyOrderEnforcer::readyNow().

Referenced by forgetAllowance(), and HappyOrderEnforcer::noteWaitOver().

concurrencyLimitReached()

bool SpareAllowanceGiver::concurrencyLimitReached ( ) const

private

Definition at line 303 of file HappyConnOpener.cc.

References concurrencyLevel, Config, SquidConfig::connect_limit, SquidConfig::happyEyeballs, and SquidConfig::workers.

Referenced by readyNow().

dequeue()

void HappyOrderEnforcer::dequeue ( HappyConnOpener &  job )

inherited

Definition at line 161 of file HappyConnOpener.cc.

References HappySpareWait::callback, AsyncCall::cancel(), HappyOrderEnforcer::jobs_, Must, HappySpareWait::position, and HappyConnOpener::spareWaiting.

Referenced by HappyConnOpener::stopGivingPrimeItsChance(), and HappyConnOpener::stopWaitingForSpareAllowance().

enqueue()

void HappyOrderEnforcer::enqueue ( HappyConnOpener &  job )

inherited

Definition at line 152 of file HappyConnOpener.cc.

References HappySpareWait::callback, HappySpareWait::codeContext, CodeContext::Current(), HappyOrderEnforcer::jobs_, Must, HappySpareWait::position, and HappyConnOpener::spareWaiting.

Referenced by HappyConnOpener::maybeGivePrimeItsChance(), and HappyConnOpener::maybeOpenSpareConnection().

forgetAllowance()

void SpareAllowanceGiver::forgetAllowance ( )

private

Definition at line 294 of file HappyConnOpener.cc.

References HappyOrderEnforcer::checkpoint(), concurrencyLevel, and Must.

Referenced by jobDroppedAllowance(), and jobUsedAllowance().

jobDroppedAllowance()

void SpareAllowanceGiver::jobDroppedAllowance

(

)

Definition at line 274 of file HappyConnOpener.cc.

References forgetAllowance(), and lastAllowanceStart.

Referenced by HappyConnOpener::noteSpareAllowance(), HappyConnOpener::stopWaitingForSpareAllowance(), and HappyConnOpener::swanSong().

jobGotInstantAllowance()

void SpareAllowanceGiver::jobGotInstantAllowance

(

)

reacts to HappyConnOpener discovering readyNow() conditions for a spare path the caller must attempt to open a spare connection immediately

Definition at line 262 of file HappyConnOpener.cc.

References recordAllowance().

Referenced by HappyConnOpener::maybeOpenSpareConnection().

jobUsedAllowance()

void SpareAllowanceGiver::jobUsedAllowance

(

)

Definition at line 268 of file HappyConnOpener.cc.

References forgetAllowance().

Referenced by HappyConnOpener::noteSpareConnectDone().

noteWaitOver()

void HappyOrderEnforcer::noteWaitOver ( )

privateinherited

Definition at line 224 of file HappyConnOpener.cc.

References HappyOrderEnforcer::checkpoint(), Must, HappyOrderEnforcer::waitEnd_, and HappyOrderEnforcer::waiting().

Referenced by HappyOrderEnforcer::NoteWaitOver().

NoteWaitOver()

void HappyOrderEnforcer::NoteWaitOver ( void *  raw )

staticprivateinherited

Definition at line 217 of file HappyConnOpener.cc.

References assert, and HappyOrderEnforcer::noteWaitOver().

Referenced by HappyOrderEnforcer::startedWaiting().

notify()

AsyncCall::Pointer SpareAllowanceGiver::notify ( const CbcPointer< HappyConnOpener > &  job )

overrideprivatevirtual

Implements HappyOrderEnforcer.

Definition at line 255 of file HappyConnOpener.cc.

References CallJobHere, and recordAllowance().

readyNow()

bool SpareAllowanceGiver::readyNow ( const HappyConnOpener &  job ) const

overridevirtual

Implements HappyOrderEnforcer.

Definition at line 248 of file HappyConnOpener.cc.

References concurrencyLimitReached(), Config, SquidConfig::connect_gap, SquidConfig::happyEyeballs, lastAllowanceStart, and HappyOrderEnforcer::startedWaiting().

Referenced by HappyConnOpener::maybeOpenSpareConnection().

recordAllowance()

void SpareAllowanceGiver::recordAllowance ( )

private

Definition at line 286 of file HappyConnOpener.cc.

References concurrencyLevel, current_dtime, and lastAllowanceStart.

Referenced by jobGotInstantAllowance(), and notify().

startedWaiting()

bool HappyOrderEnforcer::startedWaiting ( const HappyAbsoluteTime  lastStart, const int  cfgTimeoutMsec  ) const

protectedinherited

Definition at line 189 of file HappyConnOpener.cc.

References assert, Config, current_dtime, eventAdd(), HappyOrderEnforcer::name, HappyOrderEnforcer::NoteWaitOver(), HappyOrderEnforcer::waitEnd_, HappyOrderEnforcer::waiting(), and SquidConfig::workers.

Referenced by PrimeChanceGiver::readyNow(), and readyNow().

waiting()

bool HappyOrderEnforcer::waiting ( ) const

inlineprotectedinherited

Definition at line 75 of file HappyConnOpener.cc.

References HappyOrderEnforcer::waitEnd_.

Referenced by HappyOrderEnforcer::noteWaitOver(), and HappyOrderEnforcer::startedWaiting().

Member Data Documentation

concurrencyLevel

int SpareAllowanceGiver::concurrencyLevel = 0

private

the number of noteSpareAllowance() calls not already returned via jobUsedAllowance() or jobDroppedAllowance()

Definition at line 143 of file HappyConnOpener.cc.

Referenced by concurrencyLimitReached(), forgetAllowance(), and recordAllowance().

jobs_

HappySpareWaitList HappyOrderEnforcer::jobs_

privateinherited

Definition at line 82 of file HappyConnOpener.cc.

Referenced by HappyOrderEnforcer::checkpoint(), HappyOrderEnforcer::dequeue(), and HappyOrderEnforcer::enqueue().

lastAllowanceStart

HappyAbsoluteTime SpareAllowanceGiver::lastAllowanceStart = 0

private

Definition at line 139 of file HappyConnOpener.cc.

Referenced by jobDroppedAllowance(), readyNow(), and recordAllowance().

name

const char* const HappyOrderEnforcer::name

inherited

Definition at line 69 of file HappyConnOpener.cc.

Referenced by HappyOrderEnforcer::startedWaiting().

waitEnd_

HappyAbsoluteTime HappyOrderEnforcer::waitEnd_ = 0

mutableprivateinherited

Definition at line 83 of file HappyConnOpener.cc.

Referenced by HappyOrderEnforcer::noteWaitOver(), HappyOrderEnforcer::startedWaiting(), and HappyOrderEnforcer::waiting().

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

• squid/src/HappyConnOpener.cc