AtomicReference - Android SDK

Classes

Summary: Ctors | Methods | Inherited Methods | [Expand All]

Added in API level 1

public class

AtomicReference

extends Object
implements Serializable

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

Class Overview

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) Creates a new AtomicReference with the given initial value.
	AtomicReference() Creates a new AtomicReference with null initial value.

Public Methods
final boolean	compareAndSet(V expect, V update) Atomically sets the value to the given updated value if the current value `==` the expected value.
final V	get() Gets the current value.
final V	getAndSet(V newValue) Atomically sets to the given value and returns the old value.
final void	lazySet(V newValue) Eventually sets to the given value.
final void	set(V newValue) Sets to the given value.
String	toString() Returns the String representation of the current value.
final boolean	weakCompareAndSet(V expect, V update) Atomically sets the value to the given updated value if the current value `==` the expected value.

[Expand]

Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

Public Constructors

public AtomicReference (V initialValue)

Added in API level 1

Creates a new AtomicReference with the given initial value.

Parameters

initialValue	the initial value

public AtomicReference ()

Added in API level 1

Creates a new AtomicReference with null initial value.

Public Methods

public final boolean compareAndSet (V expect, V update)

Added in API level 1

Atomically sets 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 ()

Added in API level 1

Gets the current value.

Returns

the current value

public final V getAndSet (V newValue)

Added in API level 1

Atomically sets to the given value and returns the old value.

Parameters

newValue	the new value

Returns

the previous value

public final void lazySet (V newValue)

Added in API level 9

Eventually sets to the given value.

Parameters

newValue	the new value

public final void set (V newValue)

Added in API level 1

Sets to the given value.

Parameters

newValue	the new value

public String toString ()

Added in API level 1

Returns the String representation of the current value.

Returns

the String representation of the current value

public final boolean weakCompareAndSet (V expect, V update)

Added in API level 1

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

May fail spuriously and does not provide ordering guarantees, so is only rarely an appropriate alternative to compareAndSet.

Parameters

expect	the expected value
update	the new value

Returns

true if successful

Results

Classes

AtomicReference

Class Overview

Summary

Public Constructors

public AtomicReference (V initialValue)

Parameters

public AtomicReference ()

Public Methods

public final boolean compareAndSet (V expect, V update)

Parameters

Returns

public final V get ()

Returns

public final V getAndSet (V newValue)

Parameters

Returns

public final void lazySet (V newValue)

Parameters

public final void set (V newValue)

Parameters

public String toString ()

Returns

public final boolean weakCompareAndSet (V expect, V update)

Parameters

Returns