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Posted to dev@sling.apache.org by "Timothee Maret (JIRA)" <ji...@apache.org> on 2012/07/18 15:14:33 UTC
[jira] [Updated] (SLING-2540) Allow the ThreadPool to process
Callable/Runnable and return a Future
[ https://issues.apache.org/jira/browse/SLING-2540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Timothee Maret updated SLING-2540:
----------------------------------
Attachment: SLING-2540.patch
The patch adds the following methods to ThreadPool:
* <T> Future<T> submit(Callable<T> callable);
* Future<?> submit(Runnable runnable);
Please adjust the dependencies in the pom.xml.
> Allow the ThreadPool to process Callable/Runnable and return a Future
> ---------------------------------------------------------------------
>
> Key: SLING-2540
> URL: https://issues.apache.org/jira/browse/SLING-2540
> Project: Sling
> Issue Type: Improvement
> Components: Commons
> Affects Versions: Commons Threads 3.1.0
> Reporter: Timothee Maret
> Attachments: SLING-2540.patch
>
>
> Currently the sling's ThreadPool [0] is not returning a Future when executing a task.
> However, having a handle on the future result of the computation is useful for cases requiring fine grained synchronization among tasks.
> For instance, one could require to execute tasks mixing parallel and sequential execution (Barrier synchronization). As an example, we could take the following queue of tasks:
> queue: -->(task1)-->(task2, task3, task4)-->(task5)-->(task6,task7)
> Group of tasks = (task1, …, taskn)
> Groups of tasks are executed sequentially
> Tasks in a group are executed in parallel
> This could be easily implemented based on the Future objects returned by the ThreadPool.
> Thus, it would be nice to enable it.
> [0] org.apache.sling.commons.threads.ThreadPool
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