Android

java.util.concurrent.atomic.AtomicReference<V>

java.lang.Object
java.util.concurrent.atomic.AtomicReference<V> Serializable

An object reference that may be updated atomically. See the java.util.concurrent.atomic package specification for description of the properties of atomic variables.

Summary

Public Constructors

            AtomicReference(V initialValue)
Create a new AtomicReference with the given initial value.
            AtomicReference()
Create a new AtomicReference with null initial value.

Public Methods

    final      boolean  compareAndSet(V expect, V update)
Atomically set the value to the given updated value if the current value == the expected value.
    final      get()
Get the current value.
    final      getAndSet(V newValue)
Set to the given value and return the old value.
    final      void  set(V newValue)
Set to the given value.
          String  toString()
Returns the String representation of the current value.
    final      boolean  weakCompareAndSet(V expect, V update)
Atomically set the value to the given updated value if the current value == the expected value.
Methods inherited from class java.lang.Object

Details

Public Constructors

public AtomicReference(V initialValue)

Create a new AtomicReference with the given initial value.

Parameters

initialValue the initial value

public AtomicReference()

Create a new AtomicReference with null initial value.

Public Methods

public final boolean compareAndSet(V expect, V update)

Atomically set the value to the given updated value if the current value == the expected value.

Parameters

expect the expected value
update the new value

Returns

  • true if successful. False return indicates that the actual value was not equal to the expected value.

public final V get()

Get the current value.

Returns

  • the current value

public final V getAndSet(V newValue)

Set to the given value and return the old value.

Parameters

newValue the new value

Returns

  • the previous value

public final void set(V newValue)

Set to the given value.

Parameters

newValue the new value

public String toString()

Returns the String representation of the current value.

Returns

  • the String representation of the current value.

public final boolean weakCompareAndSet(V expect, V update)

Atomically set the value to the given updated value if the current value == the expected value. May fail spuriously.

Parameters

expect the expected value
update the new value

Returns

  • true if successful.
Copyright 2007 Google Inc. Build 0.9_r1-98467 - 14 Aug 2008 18:56