Package org.infinispan.executors

Class LimitedExecutor

java.lang.Object

org.infinispan.executors.LimitedExecutor

All Implemented Interfaces:

Executor

public class LimitedExecutor
extends Object
implements Executor

Executes tasks in the given executor, but never has more than maxConcurrentTasks tasks running at the same time.

A task can finish running without allowing another task to run in its stead, with executeAsync(Supplier). A new task will only start after the CompletableFuture returned by the task has completed.

Blocking mode. If the executor is a WithinThreadExecutor, tasks will run in the thread that submitted them. If there are no available permits, the caller thread will block until a permit becomes available.

Since:

9.0

Author:

Dan Berindei

Constructor Summary

Constructors

Constructor	Description
LimitedExecutor(String name, Executor executor, int maxConcurrentTasks)

Method Summary

Modifier and Type	Method	Description
void	execute(Runnable command)
void	executeAsync(Supplier<CompletionStage<Void>> asyncCommand)	Similar to execute(Runnable), but the task can continue executing asynchronously, without blocking the OS thread, while still counting against this executor's limit.
void	shutdownNow()	Stops the executor and cancels any queued tasks.

Methods inherited from class java.lang.Object

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

Constructor Details

LimitedExecutor

public LimitedExecutor(String name,
 Executor executor,
 int maxConcurrentTasks)

Method Details

shutdownNow

public void shutdownNow()

Stops the executor and cancels any queued tasks. Stop and interrupt any tasks that have already been handed to the underlying executor.

execute

public void execute(Runnable command)

Specified by:

execute in interface Executor

executeAsync

public void executeAsync(Supplier<CompletionStage<Void>> asyncCommand)

Similar to execute(Runnable), but the task can continue executing asynchronously, without blocking the OS thread, while still counting against this executor's limit.

Parameters:

asyncCommand - A task that returns a non-null CompletionStage, which may be already completed or may complete at some point in the future.