[jboss-jira] [JBoss JIRA] (AS7-6826) Add Support for Equinox ForkJoinPool

[Philippe Marschall (JIRA)]

Philippe Marschall created AS7-6826:
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             Summary: Add Support for Equinox ForkJoinPool
                 Key: AS7-6826
                 URL: https://issues.jboss.org/browse/AS7-6826
             Project: Application Server 7
          Issue Type: Enhancement
          Components: EE
            Reporter: Philippe Marschall
            Assignee: David Lloyd


Unfortunately JSR-236 does not address Java 7 fork/join pools. This puts people how want to use fork/join pools in an awkward position, either don't use them and wait for EE 8 (four or five years) or violate the "contract" and just create them anyway.

This presents a great opportunity for AS8 to go further than the spec and provide a {{java.util.concurrent.ForkJoinPool}} and a {{java.util.concurrent.ForkJoinPool.ForkJoinWorkerThreadFactory}}. This allows us to innovate and standardize at a later time in EE 8 once we gained experience.

This should include the following features:

* Allow the configuration of {{java.util.concurrent.ForkJoinPool}} in the server configuration. You should be able to configure the parallelism and asyncMode (see constructor arguments). Similar to {{javax.enterprise.concurrent.ManagedExecutorService}}.
* Allow the injection of {{java.util.concurrent.ForkJoinPool}} configured in the server. Similar to {{javax.enterprise.concurrent.ManagedExecutorService}}.
* Allow the configuration of {{java.util.concurrent.ForkJoinPool.ForkJoinWorkerThreadFactory}} in the server configuration, merely to match the same feature in JSR-268.
* Allow the injection of {{java.util.concurrent.ForkJoinPool.ForkJoinWorkerThreadFactory}} configured in the server (similar to Infinispan), merely to match the same feature in JSR-268.
* {{java.util.concurrent.ForkJoinPool}} should per default not preserve the context http://java.net/projects/concurrency-ee-spec/lists/jsr236-experts/archive/2013-02/message/10 (naming, security, transactions, class loading). Optionally you should be able to configure which contexts are preserved, this might be tough as {{ForkJoinPool}} is not designed for extensibility.

I'm well aware that this is unspecified behaviour but so is Infinispan in AS7 and AS8 since JSR-107 again didn't make it.

This issue is intended for AS8, not AS7.

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