FadingCounter Class Reference

Counts events, forgetting old ones. Useful for "3 errors/minute" limits. More...

#include <FadingCounter.h>

Collaboration diagram for FadingCounter:

Public Member Functions
	FadingCounter ()
void	configure (double horizonSeconds)
	0=remember nothing; -1=forget nothing; new value triggers clear()
void	clear ()
	forgets all events
int	count (int howMany)
	count fresh, return #events remembered
int	remembered () const
	possibly stale #events

Public Attributes
double	horizon
	read-only memory horizon in seconds; older events are forgotten

Private Attributes
const int	precision
	#counting slots, controls measur. accuracy
double	delta
	sub-interval duration = horizon/precision
double	lastTime
	time of the last update
std::vector< int >	counters
	events per delta (possibly stale)
int	total
	number of remembered events (possibly stale)

Detailed Description

Definition at line 15 of file FadingCounter.h.

Constructor & Destructor Documentation

FadingCounter()

FadingCounter::FadingCounter

(

)

Definition at line 17 of file FadingCounter.cc.

References counters, and precision.

Member Function Documentation

clear()

void FadingCounter::clear

(

)

Definition at line 25 of file FadingCounter.cc.

References counters, current_dtime, lastTime, precision, and total.

Referenced by configure(), and count().

configure()

void FadingCounter::configure

(

double

horizonSeconds

)

Definition at line 33 of file FadingCounter.cc.

References clear(), delta, horizon, and precision.

Referenced by Ssl::ClientBio::ClientBio().

count()

int FadingCounter::count

(

int

howMany

)

Definition at line 42 of file FadingCounter.cc.

References clear(), counters, current_dtime, delta, horizon, lastTime, Must, precision, and total.

remembered()

int FadingCounter::remembered ( ) const

inline

Definition at line 26 of file FadingCounter.h.

References total.

Member Data Documentation

counters

std::vector<int> FadingCounter::counters

private

Definition at line 36 of file FadingCounter.h.

Referenced by FadingCounter(), clear(), and count().

delta

double FadingCounter::delta

private

Definition at line 33 of file FadingCounter.h.

Referenced by configure(), and count().

horizon

double FadingCounter::horizon

Definition at line 29 of file FadingCounter.h.

Referenced by configure(), and count().

lastTime

double FadingCounter::lastTime

private

Definition at line 35 of file FadingCounter.h.

Referenced by clear(), and count().

precision

const int FadingCounter::precision

private

Definition at line 32 of file FadingCounter.h.

Referenced by FadingCounter(), clear(), configure(), and count().

total

int FadingCounter::total

private

Definition at line 37 of file FadingCounter.h.

Referenced by clear(), count(), and remembered().

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

• squid/src/FadingCounter.h
• squid/src/FadingCounter.cc