ORBRunner uses the orb after run() returns ------------------------------------------ Key: JBTM-2423 URL: https://issues.jboss.org/browse/JBTM-2423 Project: JBoss Transaction Manager Issue Type: Bug Reporter: Michael Musgrove Assignee: Michael Musgrove ORBRunner.java starts an orb using orb().run() but then performs operations on the orb after the run() method returns. According to the CORBA spec this is invalid: {quote} Once an ORB has shutdown, only object reference management operations(duplicate, release and is_nil) may be invoked on the ORB or any object reference obtained from it. {quote} Note that when the orb.run() method returns the orb has shutdown because, for the run method, the spec states: {quote} This operation will block until the ORB has completed the shutdown process, {quote} This issue has arisen because of a change made to our fork of the jdk orb: in the jdk orb shutdown method we join with all the orb runners. This results in deadlock: # com.arjuna.orbportability.ORB.shutdown is a synchronized method and it calls shutdown on the jdk orb; # shutdown on the jdk orb notifies the ORBRunner thread which now tries to call back into a synchronized method of com.arjuna.orbportability.ORB but is blocked because the monitor is held # at this point the jdk orb shutdown would normally then return allowing the the ORBRunner thread to make progress but a recent change now means that the jdk orb shutdown method performs a join() on the various ORBRunner threads