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 More...
void	jobDroppedAllowance ()
	reacts to HappyConnOpener dropping its spare connection allowance More...
void	checkpoint ()
	resumes jobs that need resuming (if any) More...
void	enqueue (HappyConnOpener &)
	starts managing the job's wait; the job should expect a call back More...
void	dequeue (HappyConnOpener &)
	stops managing the job's wait; cancels the pending callback, if any More...

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

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 More...
void	recordAllowance ()
	account for the given allowance More...
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 More...
int	concurrencyLevel = 0
HappySpareWaitList	jobs_
	queued jobs waiting their turn More...
HappyAbsoluteTime	waitEnd_ = 0
	expected NoteWaitOver() call time (or zero) More...

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(), min(), 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:

• src/HappyConnOpener.cc