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java.util.concurrent.atomic.AtomicIntegerArray

java.lang.Object
java.util.concurrent.atomic.AtomicIntegerArray Serializable

An int array 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

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

Public Methods

    final      int  addAndGet(int i, int delta)
Atomically add the given value to element at index i.
    final      boolean  compareAndSet(int i, int expect, int update)
Atomically set the value to the given updated value if the current value == the expected value.
    final      int  decrementAndGet(int i)
Atomically decrement by one the element at index i.
    final      int  get(int i)
Get the current value at position i.
    final      int  getAndAdd(int i, int delta)
Atomically add the given value to element at index i.
    final      int  getAndDecrement(int i)
Atomically decrement by one the element at index i.
    final      int  getAndIncrement(int i)
Atomically increment by one the element at index i.
    final      int  getAndSet(int i, int newValue)
Set the element at position i to the given value and return the old value.
    final      int  incrementAndGet(int i)
Atomically increment by one the element at index i.
    final      int  length()
Returns the length of the array.
    final      void  set(int i, int 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, int expect, int 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 AtomicIntegerArray(int length)

Create a new AtomicIntegerArray of given length.

Parameters

length the length of the array

public AtomicIntegerArray(int[] array)

Create a new AtomicIntegerArray 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 int addAndGet(int i, int delta)

Atomically add the given value to element at index i.

Parameters

i the index
delta the value to add

Returns

  • the updated value;

public final boolean compareAndSet(int i, int expect, int 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 int decrementAndGet(int i)

Atomically decrement by one the element at index i.

Parameters

i the index

Returns

  • the updated value;

public final int get(int i)

Get the current value at position i.

Parameters

i the index

Returns

  • the current value

public final int getAndAdd(int i, int delta)

Atomically add the given value to element at index i.

Parameters

i the index
delta the value to add

Returns

  • the previous value;

public final int getAndDecrement(int i)

Atomically decrement by one the element at index i.

Parameters

i the index

Returns

  • the previous value;

public final int getAndIncrement(int i)

Atomically increment by one the element at index i.

Parameters

i the index

Returns

  • the previous value;

public final int getAndSet(int i, int 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 incrementAndGet(int i)

Atomically increment by one the element at index i.

Parameters

i the index

Returns

  • the updated value;

public final int length()

Returns the length of the array.

Returns

  • the length of the array

public final void set(int i, int 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, int expect, int 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 18:48