[jboss-jira] [JBoss JIRA] Created: (JBAS-4525) JBossMQ WriteTask in UIL2 could block forever

JBossMQ WriteTask in UIL2 could block forever --------------------------------------------- Key: JBAS-4525 URL: http://jira.jboss.com/jira/browse/JBAS-4525 Project: JBoss Application Server Issue Type: Bug Security Level: Public (Everyone can see) Components: JMS service Affects Versions: JBossAS-4.2.1.GA Reporter: Adrian Brock Assigned To: Adrian Brock Fix For: JBossAS-5.0.0.GA, JBossAS-4.2.2.CR1 The JBossMQ UIL2 WriteTask shutdowns when it is signaled by the ReadTask using an Thread.interrupt(). If however, something "eats" that interrupt status of the thread then the WriteTask will block forever and never stop. This leads to thread leaks. The solution is not wait forever or an interrupt. Instead the thread should periodically wake up and check the "started" flag. e.g. Here is the suggest patch in outline while (true) { + synchronized (running) + { + if (WriteState != Started) + break; + } BaseMsg msg = null; try { - msg = (BaseMsg) sendQueue.take(); + // Only wait for 10 seconds + msg = (BaseMsg) sendQueue.poll(10000l); + if (msg == null) + continue; // re-start the loop when no message after 10 seconds -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira