[jboss-jira] [JBoss JIRA] Commented: (JBAOP-569) Deadlock when two threads are removing a binding

Deadlock when two threads are removing a binding ------------------------------------------------ Key: JBAOP-569 URL: http://jira.jboss.com/jira/browse/JBAOP-569 Project: JBoss AOP Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 2.0.0.CR8 Reporter: Flavia Rainone Assigned To: Flavia Rainone Fix For: 2.0.0.GA Attachments: NEW_DEADLOCK.txt There is a deadlock occurring during rebuildingchain tests. It happens when there are two threads trying to remove distinct bindings. Here is the description of the deadlock scenario: Thread 1: - acquires the AdviceBinding.advisors lock during the call to AdviceBinding.clearAdvisors() (made by AspectManager.removeBinding method) - acquires the advisor lock during the call to ClassAdvisor.removeAdviceBinding (made by AdviceBinding.clearAdvisors method) - reacquires the advisor lock during the call to Advisor.removeAdviceBinding (made by ClassAdvisor.removeAdviceBinding method) - acquires the lock of the manager.getBindings() collection during the call to ClassAdvisor.updateInterceptorChain (resultant of the advice being removed) - waits on the lock of the AdviceBindings.advisors collection, during a call to AdviceBinding.addAdvisor (made by a resolveXXXPointcut method) Thread2 -acquires the AdviceBinding.advisors clock during the call to AdviceBinding.clearAdvisors() (made by AspectManager.removeBinding method) - waits on the advisor lock during the call ClassAdvisor.removeAdviceBinding (made by AdviceBinding.clearAdvisors method) Notice that the advisor involved in both threads is the same. The binding that thread 2 tries to remove is the binding that Thread1 tries to manipulate in the last line of the Thread1 description above.