org.apache.hadoop.hbase.metrics.impl

Class CounterImpl

java.lang.Object

org.apache.hadoop.hbase.metrics.impl.CounterImpl

All Implemented Interfaces:

Counter, Metric

@InterfaceAudience.Private
public class CounterImpl
extends Object
implements Counter

Custom implementation of Counter using LongAdder.

Field Summary

Fields

Modifier and Type	Field and Description
private LongAdder	counter

Constructor Summary

Constructors

Constructor and Description
CounterImpl()

Method Summary

Modifier and Type	Method and Description
void	decrement() Decrement this by 1.
void	decrement(long n) Decrement this by n.
long	getCount() Returns the current value.
void	increment() Increment this by 1.
void	increment(long n) Increment this by n.

Methods inherited from class java.lang.Object

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

Field Detail

counter

private final LongAdder counter

Constructor Detail

CounterImpl

public CounterImpl()

Method Detail

increment

public void increment()

Description copied from interface: Counter

Increment this by 1.

Specified by:

increment in interface Counter

increment

public void increment(long n)

Description copied from interface: Counter

Increment this by n.

Specified by:

increment in interface Counter

Parameters:

n - The amount to increment.

decrement

public void decrement()

Description copied from interface: Counter

Decrement this by 1.

Specified by:

decrement in interface Counter

decrement

public void decrement(long n)

Description copied from interface: Counter

Decrement this by n.

Specified by:

decrement in interface Counter

Parameters:

n - The amount to decrement.

getCount

public long getCount()

Description copied from interface: Counter

Returns the current value.

Specified by:

getCount in interface Counter

Returns:

the current value.