hudson.remoting

Class SingleLaneExecutorService

java.lang.Object

java.util.concurrent.AbstractExecutorService

hudson.remoting.SingleLaneExecutorService

All Implemented Interfaces:

Executor, ExecutorService

public class SingleLaneExecutorService
extends AbstractExecutorService

Creates an ExecutorService that executes submitted tasks sequentially on top of another generic arbitrary ExecutorService.

In general, ExecutorService do not place constraints about the order in which submitted tasks are executed. This class takes such an executor service, then creates a stronger guarantee on the order of the executions. Namely, the submitted tasks are executed in the FIFO order, and no two tasks are executed concurrently.

A large number of SingleLaneExecutorServices backed by a single cached executor service is more efficient than the same number of single-threaded ExecutorService because of the thread sharing.

This class is named SingleLaneExecutorService because it's akin to create a driving lane in a high way. You can have many lanes, but each lane is strictly sequentially ordered.

Author:

Kohsuke Kawaguchi

Constructor Summary

Constructors

Constructor and Description
SingleLaneExecutorService(ExecutorService base)

Method Summary

Modifier and Type	Method and Description
boolean	awaitTermination(long timeout, TimeUnit unit)
void	execute(Runnable command)
boolean	isShutdown()
boolean	isTerminated()
void	shutdown()
List<Runnable>	shutdownNow()

Methods inherited from class java.util.concurrent.AbstractExecutorService

invokeAll, invokeAll, invokeAny, invokeAny, newTaskFor, newTaskFor, submit, submit, submit

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleLaneExecutorService

public SingleLaneExecutorService(ExecutorService base)

Parameters:

base - Executor service that actually provides the threads that execute tasks.

Method Detail

shutdown

public void shutdown()

Note that this does not shutdown the wrapped ExecutorService.

shutdownNow

@Nonnull
public List<Runnable> shutdownNow()

Note that this does not shutdown the wrapped ExecutorService.

isShutdown

public boolean isShutdown()

isTerminated

public boolean isTerminated()

awaitTermination

public boolean awaitTermination(long timeout,
                                TimeUnit unit)
                         throws InterruptedException

Throws:

InterruptedException

execute

public void execute(@Nonnull
                    Runnable command)