com.hazelcast.util.counters

Class MwCounter

java.lang.Object

com.hazelcast.util.counters.MwCounter

All Implemented Interfaces:

Counter

public final class MwCounter
extends Object
implements Counter

A Counter that is thread-safe; so can be incremented by multiple threads concurrently. The MwCounter is not meant for a huge amount of contention. In that case it would be better to create a counter on the LongAdder. This counter does not provide padding to prevent false sharing.

Method Summary

Methods

Modifier and Type	Method and Description
long	get() Gets the current value of the counter.
void	inc() Increments the counter by one.
void	inc(long amount) Increments (or decrements) the counter by the given amount.
static MwCounter	newMwCounter() Creates a new MwCounter with 0 as its initial value.
static MwCounter	newMwCounter(long initialValue) Creates a new MwCounter with the given initial value.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

get

public long get()

Description copied from interface: Counter

Gets the current value of the counter.

Specified by:

get in interface Counter

Returns:

the current value of the counter.

inc

public void inc()

Description copied from interface: Counter

Increments the counter by one.

Specified by:

inc in interface Counter

inc

public void inc(long amount)

Description copied from interface: Counter

Increments (or decrements) the counter by the given amount. If the amount is negative, the counter is decremented.

Specified by:

inc in interface Counter

Parameters:

amount - the amount to increase or decrease the counter with.

toString

public String toString()

Overrides:

toString in class Object

newMwCounter

public static MwCounter newMwCounter()

Creates a new MwCounter with 0 as its initial value.

Returns:

the new MwCounter, set to 0.

newMwCounter

public static MwCounter newMwCounter(long initialValue)

Creates a new MwCounter with the given initial value.

Parameters:

initialValue - the initial value of the counter.

Returns:

the new MwCounter, set to the given initial value.