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

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.