Android

java.util.concurrent.atomic.AtomicReferenceArray<E>

java.lang.Object
java.util.concurrent.atomic.AtomicReferenceArray<E> Serializable

An array of object references in which elements may be updated atomically. See the java.util.concurrent.atomic package specification for description of the properties of atomic variables.

Summary

Public Constructors

            AtomicReferenceArray(int length)
Create a new AtomicReferenceArray of given length.
            AtomicReferenceArray(E[] array)
Create a new AtomicReferenceArray with the same length as, and all elements copied from, the given array.

Public Methods

    final      boolean  compareAndSet(int i, E expect, E update)
Atomically set the value to the given updated value if the current value == the expected value.
    final      get(int i)
Get the current value at position i.
    final      getAndSet(int i, E newValue)
Set the element at position i to the given value and return the old value.
    final      int  length()
Returns the length of the array.
    final      void  set(int i, E newValue)
Set the element at position i to the given value.
          String  toString()
Returns the String representation of the current values of array.
    final      boolean  weakCompareAndSet(int i, E expect, E 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 AtomicReferenceArray(int length)

Create a new AtomicReferenceArray of given length.

Parameters

length the length of the array

public AtomicReferenceArray(E[] array)

Create a new AtomicReferenceArray with the same length as, and all elements copied from, the given array.

Parameters

array the array to copy elements from

Throws

NullPointerException if array is null

Public Methods

public final boolean compareAndSet(int i, E expect, E update)

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

Parameters

i the index
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 E get(int i)

Get the current value at position i.

Parameters

i the index

Returns

  • the current value

public final E getAndSet(int i, E newValue)

Set the element at position i to the given value and return the old value.

Parameters

i the index
newValue the new value

Returns

  • the previous value

public final int length()

Returns the length of the array.

Returns

  • the length of the array

public final void set(int i, E newValue)

Set the element at position i to the given value.

Parameters

i the index
newValue the new value

public String toString()

Returns the String representation of the current values of array.

Returns

  • the String representation of the current values of array.

public final boolean weakCompareAndSet(int i, E expect, E update)

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

Parameters

i the index
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