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

[Paul Ferraro (Jira)]

Paul Ferraro created WFLY-13538:
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             Summary: 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


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 and MethodHandle to use on Java9+.



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