Package org.apache.pulsar.broker.stats.prometheus.metrics

Class LongAdderCounter

java.lang.Object

org.apache.pulsar.broker.stats.prometheus.metrics.LongAdderCounter

All Implemented Interfaces:

org.apache.bookkeeper.stats.Counter

public class LongAdderCounter
extends Object
implements org.apache.bookkeeper.stats.Counter

Counter implementation based on LongAdder.

LongAdder keeps a counter per-thread and then aggregates to get the result, in order to avoid contention between multiple threads.

Constructor Summary

Constructors

Constructor	Description
LongAdderCounter()

Method Summary

Modifier and Type	Method	Description
void	addCount(long delta)
void	addLatency(long eventLatency, TimeUnit unit)
void	clear()
void	dec()
Long	get()
void	inc()

Methods inherited from class java.lang.Object

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

Constructor Details

LongAdderCounter

public LongAdderCounter()

Method Details

clear

public void clear()

Specified by:

clear in interface org.apache.bookkeeper.stats.Counter

inc

public void inc()

Specified by:

inc in interface org.apache.bookkeeper.stats.Counter

dec

public void dec()

Specified by:

dec in interface org.apache.bookkeeper.stats.Counter

addCount

public void addCount(long delta)

Specified by:

addCount in interface org.apache.bookkeeper.stats.Counter

addLatency

public void addLatency(long eventLatency,
 TimeUnit unit)

Specified by:

addLatency in interface org.apache.bookkeeper.stats.Counter

get

public Long get()

Specified by:

get in interface org.apache.bookkeeper.stats.Counter