org.jjoost.util
Class Counters

java.lang.Object
  org.jjoost.util.Counters

public class Counters
extends java.lang.Object

Some default Counter implementations

Author:

b.elliottsmith

Nested Class Summary

static class	Counters.DontCounter a Counter which ignores all updates to its value and always returns a value less than zero.
static class	Counters.SerialCounter Returns a regular Counter which performs ordinary addition with no concurrency guarantees
static class	Counters.ThreadSafeCounter a thread safe Counter which uses compare and set operations to modify its value

Constructor Summary

Counters()

Method Summary

static Counter	newCounter() Returns a regular Counter which performs ordinary addition with no concurrency guarantees
static Counter	newDoNothingCounter() Returns a Counter which ignores all updates to its value and always returns a value less than zero.
static Counter	newThreadSafeCounter() Returns a new thread safe Counter which uses compare and set operations to modify its value

Methods inherited from class java.lang.Object

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

Constructor Detail

Counters

public Counters()

Method Detail

newThreadSafeCounter

public static Counter newThreadSafeCounter()

Returns a new thread safe Counter which uses compare and set operations to modify its value

Returns:

a new thread safe Counter which uses compare and set operations to modify its value

newDoNothingCounter

public static Counter newDoNothingCounter()

Returns a Counter which ignores all updates to its value and always returns a value less than zero.

Returns:

a Counter which ignores all updates to its value and always returns a value less than zero.

newCounter

public static Counter newCounter()

Returns a regular Counter which performs ordinary addition with no concurrency guarantees

Returns:

a regular Counter which performs ordinary addition with no concurrency guarantees