Package org.eclipse.jetty.util.statistic

Class CounterStatistic

java.lang.Object

org.eclipse.jetty.util.statistic.CounterStatistic

public class CounterStatistic
extends java.lang.Object

Statistics on a counter value.

Keep total, current and maximum values of a counter that can be incremented and decremented. The total refers only to increments.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.concurrent.atomic.AtomicLong	_current
protected java.util.concurrent.atomic.LongAccumulator	_max
protected java.util.concurrent.atomic.LongAdder	_total

Constructor Summary

Constructors

Constructor	Description
CounterStatistic()

Method Summary

Modifier and Type	Method	Description
long	add(long delta)
long	decrement()	decrement by 1
long	getCurrent()
long	getMax()
long	getTotal()
long	increment()	increment the value by one
void	reset()
void	reset(long value)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

_max

protected final java.util.concurrent.atomic.LongAccumulator _max

_current

protected final java.util.concurrent.atomic.AtomicLong _current

_total

protected final java.util.concurrent.atomic.LongAdder _total

Constructor Detail

CounterStatistic

public CounterStatistic()

Method Detail

reset

public void reset()

reset

public void reset(long value)

add

public long add(long delta)

Parameters:

delta - the amount to add to the count

Returns:

the new value

increment

public long increment()

increment the value by one

Returns:

the new value, post increment

decrement

public long decrement()

decrement by 1

Returns:

the new value, post-decrement

getMax

public long getMax()

Returns:

max value

getCurrent

public long getCurrent()

Returns:

current value

getTotal

public long getTotal()

Returns:

total value

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object