org.jgroups.blocks.atomic

Interface Counter

All Known Implementing Classes:

COUNTER.CounterImpl

public interface Counter

Since:

3.0.0

Author:

Bela Ban

Method Summary

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
java.lang.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

Method Detail

getName

java.lang.String getName()

get

long get()

Gets the current value of the counter

Returns:

The current value

set

void set(long new_value)

Sets the counter to a new value

Parameters:

new_value - The new value

compareAndSet

boolean compareAndSet(long expect,
                      long update)

Atomically updates the counter using a CAS operation

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

long incrementAndGet()

Atomically increments the counter and returns the new value

Returns:

The new value

decrementAndGet

long decrementAndGet()

Atomically decrements the counter and returns the new value

Returns:

The new value

addAndGet

long addAndGet(long delta)

Atomically adds the given value to the current value.

Parameters:

delta - the value to add

Returns:

the updated value