Package com.powsybl.computation

Class CompletableFutureTask<R>

java.lang.Object

java.util.concurrent.CompletableFuture<R>

com.powsybl.computation.CompletableFutureTask<R>

All Implemented Interfaces:

Runnable, CompletionStage<R>, Future<R>

public class CompletableFutureTask<R>
extends CompletableFuture<R>
implements Runnable

A CompletableFuture which embeds an actual task, unlike the default implementation. In particular, the behaviour of cancel(boolean) is modified in order to actually interrupt the thread executing the bound task.

Similarly to FutureTask, this class implements Runnable and can therefore be submitted to an Executor for execution.

Author:

Sylvain Leclerc <sylvain.leclerc at rte-france.com>

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.CompletableFuture

CompletableFuture.AsynchronousCompletionTask

Constructor Summary

Constructors

Constructor	Description
CompletableFutureTask(Callable<R> task)	Creates a completable future bound to the specified task.

Method Summary

Modifier and Type	Method	Description
boolean	cancel(boolean mayInterruptIfRunning)	Cancels this completable future and, if requested and if the bound task is under execution, interrupts the thread executing the task.
<U> CompletableFuture<U>	newIncompleteFuture()
void	run()	Executes the wrapped callable.
static <T> CompletableFutureTask<T>	runAsync(Callable<T> task, Executor executor)	Creates a completable future task and submits it to the specified executor.
CompletableFutureTask<R>	runAsync(Executor executor)	Submits this task to the specified executor.

Methods inherited from class java.util.concurrent.CompletableFuture

acceptEither, acceptEitherAsync, acceptEitherAsync, allOf, anyOf, applyToEither, applyToEitherAsync, applyToEitherAsync, complete, completeAsync, completeAsync, completedFuture, completedStage, completeExceptionally, completeOnTimeout, copy, defaultExecutor, delayedExecutor, delayedExecutor, exceptionally, exceptionallyAsync, exceptionallyAsync, exceptionallyCompose, exceptionallyComposeAsync, exceptionallyComposeAsync, failedFuture, failedStage, get, get, getNow, getNumberOfDependents, handle, handleAsync, handleAsync, isCancelled, isCompletedExceptionally, isDone, join, minimalCompletionStage, obtrudeException, obtrudeValue, orTimeout, runAfterBoth, runAfterBothAsync, runAfterBothAsync, runAfterEither, runAfterEitherAsync, runAfterEitherAsync, runAsync, runAsync, supplyAsync, supplyAsync, thenAccept, thenAcceptAsync, thenAcceptAsync, thenAcceptBoth, thenAcceptBothAsync, thenAcceptBothAsync, thenApply, thenApplyAsync, thenApplyAsync, thenCombine, thenCombineAsync, thenCombineAsync, thenCompose, thenComposeAsync, thenComposeAsync, thenRun, thenRunAsync, thenRunAsync, toCompletableFuture, toString, whenComplete, whenCompleteAsync, whenCompleteAsync

Methods inherited from class java.lang.Object

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

Constructor Details

CompletableFutureTask

public CompletableFutureTask(Callable<R> task)

Creates a completable future bound to the specified task. This task will be executed on a call to run(), for instance by submitting this object to an Executor.

Parameters:

task - The task to be bound to this future.

Method Details

run

public void run()

Executes the wrapped callable. On execution end, this future will complete with the callable result, or complete exceptionally in case of exception.

Specified by:

run in interface Runnable

runAsync

public CompletableFutureTask<R> runAsync(Executor executor)

Submits this task to the specified executor.

Parameters:

executor - The executor which will execute this task.

Returns:

This.

runAsync

public static <T> CompletableFutureTask<T> runAsync(Callable<T> task,
 Executor executor)

Creates a completable future task and submits it to the specified executor.

Parameters:

task - The task to be executed.

executor - The executor which will execute the task.

Returns:

A CompletableFutureTask bound to the specified task.

cancel

public boolean cancel(boolean mayInterruptIfRunning)

Cancels this completable future and, if requested and if the bound task is under execution, interrupts the thread executing the task.

Specified by:

cancel in interface Future<R>

Overrides:

cancel in class CompletableFuture<R>

Parameters:

mayInterruptIfRunning - if true, and if the bound task is under execution, the thread executing the task will be interrupted

Returns:

false if the task could not be cancelled, typically because it has already completed; true otherwise

newIncompleteFuture

public <U> CompletableFuture<U> newIncompleteFuture()

Overrides:

newIncompleteFuture in class CompletableFuture<R>