org.jgroups.protocols

Class COUNTER.CounterImpl

java.lang.Object

org.jgroups.protocols.COUNTER.CounterImpl

All Implemented Interfaces:

Counter

Enclosing class:

COUNTER

protected class COUNTER.CounterImpl
extends Object
implements Counter

Field Summary

Fields

Modifier and Type	Field and Description
protected String	name

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	COUNTER.CounterImpl(String name)

Method Summary

Methods

Modifier and Type	Method and Description
long	addAndGet(long delta) Atomically adds the given value to the current value.
boolean	compareAndSet(long expect, long update) Atomically updates the counter using a CAS operation
long	decrementAndGet() Atomically decrements the counter and returns the new value
long	get() Gets the current value of the counter
String	getName()
long	incrementAndGet() Atomically increments the counter and returns the new value
void	set(long new_value) Sets the counter to a new value
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

name

protected final String name

Constructor Detail

COUNTER.CounterImpl

protected COUNTER.CounterImpl(String name)

Method Detail

getName

public String getName()

Specified by:

getName in interface Counter

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

set

public void set(long new_value)

Description copied from interface: Counter

Sets the counter to a new value

Specified by:

set in interface Counter

Parameters:

new_value - The new value

compareAndSet

public boolean compareAndSet(long expect,
                    long update)

Description copied from interface: Counter

Atomically updates the counter using a CAS operation

Specified by:

compareAndSet in interface Counter

Parameters:

expect - The expected value of the counter

update - The new value of the counter

Returns:

True if the counter could be updated, false otherwise

incrementAndGet

public long incrementAndGet()

Description copied from interface: Counter

Atomically increments the counter and returns the new value

Specified by:

incrementAndGet in interface Counter

Returns:

The new value

decrementAndGet

public long decrementAndGet()

Description copied from interface: Counter

Atomically decrements the counter and returns the new value

Specified by:

decrementAndGet in interface Counter

Returns:

The new value

addAndGet

public long addAndGet(long delta)

Description copied from interface: Counter

Atomically adds the given value to the current value.

Specified by:

addAndGet in interface Counter

Parameters:

delta - the value to add

Returns:

the updated value

toString

public String toString()

Overrides:

toString in class Object