BackoffThrottle Class Reference

#include <backoff.h>

Inheritance diagram for BackoffThrottle:

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Public Member Functions
	BackoffThrottle ()
	BackoffThrottle (const unsigned init_delay_ms, const unsigned max_delay_ms, const unsigned reset_after_ms)
	~BackoffThrottle ()
void	Throttle ()
void	Reset ()

Static Public Attributes
static const unsigned	kDefaultInitDelay = 32
static const unsigned	kDefaultMaxDelay = 2000
static const unsigned	kDefaultResetAfter = 10000

Private Member Functions
void	Init (const unsigned init_delay_ms, const unsigned max_delay_ms, const unsigned reset_after_ms)

Private Attributes
unsigned	delay_range_
unsigned	init_delay_ms_
unsigned	max_delay_ms_
unsigned	reset_after_ms_
time_t	last_throttle_
Prng	prng_
pthread_mutex_t *	lock_

Additional Inherited Members
Protected Member Functions inherited from SingleCopy
	SingleCopy ()

Detailed Description

This file is part of the CernVM File System. When Throttle() is called in quick succession, the exponential backoff will start (sleep). The class forgets a call to Throttle() after reset_after_ms milliseconds.

Definition at line 18 of file backoff.h.

Constructor & Destructor Documentation

BackoffThrottle::BackoffThrottle ( )

inline

Definition at line 27 of file backoff.h.

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BackoffThrottle::BackoffThrottle ( const unsigned  init_delay_ms, const unsigned  max_delay_ms, const unsigned  reset_after_ms  )

inline

Definition at line 30 of file backoff.h.

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BackoffThrottle::~BackoffThrottle

(

)

Definition at line 36 of file backoff.cc.

Member Function Documentation

void BackoffThrottle::Init ( const unsigned  init_delay_ms, const unsigned  max_delay_ms, const unsigned  reset_after_ms  )

private

Definition at line 18 of file backoff.cc.

Referenced by BackoffThrottle().

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void BackoffThrottle::Reset

(

)

Definition at line 42 of file backoff.cc.

Referenced by file_watcher::FileWatcher::RegisterFilter().

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void BackoffThrottle::Throttle

(

)

Definition at line 50 of file backoff.cc.

Referenced by FuseRemounter::ChangeRoot(), FuseRemounter::CheckSynchronously(), publish::CmdEnter::CleanupSession(), cvmfs::cvmfs_open(), LogBufferXattr::FinalizeValue(), ResolvConfEventHandler::GetDnsAddresses(), TaskRead::Process(), file_watcher::FileWatcher::RegisterFilter(), and publish::TransactionRetry().

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Member Data Documentation

unsigned BackoffThrottle::delay_range_

private

Definition at line 44 of file backoff.h.

unsigned BackoffThrottle::init_delay_ms_

private

Definition at line 45 of file backoff.h.

const unsigned BackoffThrottle::kDefaultInitDelay = 32

static

32ms

Definition at line 20 of file backoff.h.

Referenced by BackoffThrottle().

const unsigned BackoffThrottle::kDefaultMaxDelay = 2000

static

Maximum 2 seconds

Definition at line 21 of file backoff.h.

Referenced by BackoffThrottle().

const unsigned BackoffThrottle::kDefaultResetAfter = 10000

static

Clear memory after 10s

Definition at line 25 of file backoff.h.

Referenced by BackoffThrottle().

time_t BackoffThrottle::last_throttle_

private

Definition at line 48 of file backoff.h.

pthread_mutex_t* BackoffThrottle::lock_

private

Definition at line 50 of file backoff.h.

unsigned BackoffThrottle::max_delay_ms_

private

Definition at line 46 of file backoff.h.

Prng BackoffThrottle::prng_

private

Definition at line 49 of file backoff.h.

unsigned BackoffThrottle::reset_after_ms_

private

Definition at line 47 of file backoff.h.

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

• /home/sftnight/jenkins/workspace/CvmfsDoxygen/label/docker-x86_64/cvmfs/cvmfs/backoff.h
• /home/sftnight/jenkins/workspace/CvmfsDoxygen/label/docker-x86_64/cvmfs/cvmfs/backoff.cc