Package com.oracle.coherence.concurrent.atomic

Class AsyncLocalAtomicBoolean

java.lang.Object

com.oracle.coherence.concurrent.atomic.AsyncLocalAtomicBoolean

All Implemented Interfaces:

AsyncAtomicBoolean

public class AsyncLocalAtomicBoolean
extends Object
implements AsyncAtomicBoolean

Local implementation of AsyncAtomicBoolean interface, that simply wraps java.util.concurrent.atomic.AtomicBoolean instance and returns an already completed future from each method.

Author:

Aleks Seovic 2020.12.07

Field Summary

Fields

Modifier and Type	Field	Description
protected AtomicBoolean	f_fValue	Wrapped atomic boolean value.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AsyncLocalAtomicBoolean(AtomicBoolean value)	Construct LocalAtomicBoolean instance.

Method Summary

Modifier and Type	Method	Description
CompletableFuture<Boolean>	compareAndExchange(boolean fExpectedValue, boolean fNewValue)	Atomically sets the value to newValue if the current value, referred to as the witness value, == expectedValue.
CompletableFuture<Boolean>	compareAndSet(boolean fExpectedValue, boolean fNewValue)	Atomically sets the value to newValue if the current value == expectedValue.
CompletableFuture<Boolean>	get()	Returns the current value.
CompletableFuture<Boolean>	getAndSet(boolean fNewValue)	Atomically sets the value to newValue and returns the old value.
CompletableFuture<Void>	set(boolean fNewValue)	Sets the value to newValue.
String	toString()	Returns the String representation of the current value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

f_fValue

protected final AtomicBoolean f_fValue

Wrapped atomic boolean value.

Constructor Detail

AsyncLocalAtomicBoolean

protected AsyncLocalAtomicBoolean(AtomicBoolean value)

Construct LocalAtomicBoolean instance.

Parameters:

value - wrapped value

Method Detail

get

public CompletableFuture<Boolean> get()

Description copied from interface: AsyncAtomicBoolean

Returns the current value.

Specified by:

get in interface AsyncAtomicBoolean

Returns:

the current value

set

public CompletableFuture<Void> set(boolean fNewValue)

Description copied from interface: AsyncAtomicBoolean

Sets the value to newValue.

Specified by:

set in interface AsyncAtomicBoolean

Parameters:

fNewValue - the new value

Returns:

a CompletableFuture that can be used to determine whether the operation completed

getAndSet

public CompletableFuture<Boolean> getAndSet(boolean fNewValue)

Description copied from interface: AsyncAtomicBoolean

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

Specified by:

getAndSet in interface AsyncAtomicBoolean

Parameters:

fNewValue - the new value

Returns:

the previous value

compareAndSet

public CompletableFuture<Boolean> compareAndSet(boolean fExpectedValue,
                                                boolean fNewValue)

Description copied from interface: AsyncAtomicBoolean

Atomically sets the value to newValue if the current value == expectedValue.

Specified by:

compareAndSet in interface AsyncAtomicBoolean

Parameters:

fExpectedValue - the expected value

fNewValue - the new value

Returns:

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

compareAndExchange

public CompletableFuture<Boolean> compareAndExchange(boolean fExpectedValue,
                                                     boolean fNewValue)

Description copied from interface: AsyncAtomicBoolean

Atomically sets the value to newValue if the current value, referred to as the witness value, == expectedValue.

Specified by:

compareAndExchange in interface AsyncAtomicBoolean

Parameters:

fExpectedValue - the expected value

fNewValue - the new value

Returns:

the witness value, which will be the same as the expected value if successful

toString

public String toString()

Returns the String representation of the current value.

Overrides:

toString in class Object

Returns:

the String representation of the current value