[jboss-jira] [JBoss JIRA] (WFLY-13538) Add Java 9+ version of ConcurrentDirectDeque

[Paul Ferraro (Jira)]

     [ https://issues.redhat.com/browse/WFLY-13538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Ferraro updated WFLY-13538:
--------------------------------
    Description: 
The clustering code uses ConcurrentDirectDeque for its local scheduler implementation.  While a portable implementation exists, a faster implementation that relies on sun.misc.Unsafe will be used when running with a compatible JVM.

Now that jboss-parent includes profiles for multi-release jars, we can add a fast implementation (ported from Undertow) that uses VarHandle that will work on all Java9+ JVMs.

  was:
The clustering code uses ConcurrentDirectDeque for its local scheduler implementation.  While a portable implementation exists, there is also a faster version that relies on sun.misc.Unsafe.  However, this only works in Java 8.

Now that jboss-parent includes profiles for multi-release jars, we can add a variant (found in Undertow) that uses VarHandle to use on Java9+.



> Add Java 9+ version of ConcurrentDirectDeque
> --------------------------------------------
>
>                 Key: WFLY-13538
>                 URL: https://issues.redhat.com/browse/WFLY-13538
>             Project: WildFly
>          Issue Type: Task
>          Components: Clustering
>    Affects Versions: 20.0.0.Beta1
>            Reporter: Paul Ferraro
>            Assignee: Paul Ferraro
>            Priority: Major
>
> The clustering code uses ConcurrentDirectDeque for its local scheduler implementation.  While a portable implementation exists, a faster implementation that relies on sun.misc.Unsafe will be used when running with a compatible JVM.
> Now that jboss-parent includes profiles for multi-release jars, we can add a fast implementation (ported from Undertow) that uses VarHandle that will work on all Java9+ JVMs.



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