org.jvnet.hk2.config

Class WorkManager

java.lang.Object

org.jvnet.hk2.config.WorkManager

All Implemented Interfaces:

java.util.concurrent.Executor

public class WorkManager
extends java.lang.Object
implements java.util.concurrent.Executor

Simple helper for managing work sent to a foreign executor service.

Has similarities to Fork and Join.

The implementation is designed such that Tasks-1 are sent to the executor service for possibly another thread to handle. The last task is executed by the caller thread so that all threads are attempted to be fully utilized for processing including the caller's thread.

Author:

Jeff Trent

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	WorkManager.ExecutionException

Constructor Summary

Constructors

Constructor and Description
WorkManager(java.util.concurrent.Executor exec)
WorkManager(java.util.concurrent.Executor exec, int tasksToDo)

Method Summary

Methods

Modifier and Type	Method and Description
void	awaitCompletion()
void	awaitCompletion(long timeout, java.util.concurrent.TimeUnit unit)
protected void	completed(org.jvnet.hk2.config.WorkManager.Watcher<?> watcher, java.lang.Exception e)
void	execute(java.lang.Runnable task)
void	executeAll(java.util.Collection<java.lang.Runnable> tasks)
int	getWorkInProgressCount()
<V> java.util.concurrent.Future<V>	submit(java.util.concurrent.Callable<V> task)
<V> java.util.Collection<java.util.concurrent.Future<V>>	submitAll(java.util.Collection<java.util.concurrent.Callable<V>> tasks)

Methods inherited from class java.lang.Object

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

Constructor Detail

WorkManager

public WorkManager(java.util.concurrent.Executor exec)

WorkManager

public WorkManager(java.util.concurrent.Executor exec,
           int tasksToDo)

Method Detail

getWorkInProgressCount

public int getWorkInProgressCount()

awaitCompletion

public void awaitCompletion()

awaitCompletion

public void awaitCompletion(long timeout,
                   java.util.concurrent.TimeUnit unit)
                     throws java.util.concurrent.TimeoutException

Throws:

java.util.concurrent.TimeoutException

completed

protected void completed(org.jvnet.hk2.config.WorkManager.Watcher<?> watcher,
             java.lang.Exception e)

submitAll

public <V> java.util.Collection<java.util.concurrent.Future<V>> submitAll(java.util.Collection<java.util.concurrent.Callable<V>> tasks)

executeAll

public void executeAll(java.util.Collection<java.lang.Runnable> tasks)

submit

public <V> java.util.concurrent.Future<V> submit(java.util.concurrent.Callable<V> task)

execute

public void execute(java.lang.Runnable task)

Specified by:

execute in interface java.util.concurrent.Executor