Return-Path: Delivered-To: apmail-geronimo-dev-archive@www.apache.org Received: (qmail 74807 invoked from network); 9 May 2007 23:35:42 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 9 May 2007 23:35:42 -0000 Received: (qmail 37253 invoked by uid 500); 9 May 2007 23:35:46 -0000 Delivered-To: apmail-geronimo-dev-archive@geronimo.apache.org Received: (qmail 37199 invoked by uid 500); 9 May 2007 23:35:45 -0000 Mailing-List: contact dev-help@geronimo.apache.org; run by ezmlm Precedence: bulk list-help: list-unsubscribe: List-Post: Reply-To: dev@geronimo.apache.org List-Id: Delivered-To: mailing list dev@geronimo.apache.org Received: (qmail 37188 invoked by uid 99); 9 May 2007 23:35:45 -0000 Received: from herse.apache.org (HELO herse.apache.org) (140.211.11.133) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 09 May 2007 16:35:45 -0700 X-ASF-Spam-Status: No, hits=-100.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.4] (HELO brutus.apache.org) (140.211.11.4) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 09 May 2007 16:35:38 -0700 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 454ED71403F for ; Wed, 9 May 2007 16:35:18 -0700 (PDT) Message-ID: <4158888.1178753718264.JavaMail.jira@brutus> Date: Wed, 9 May 2007 16:35:18 -0700 (PDT) From: "Jason Dillon (JIRA)" To: dev@geronimo.apache.org Subject: [jira] Closed: (GERONIMO-3141) potential deadlock in TransformerCollection In-Reply-To: <10610287.1178461815304.JavaMail.jira@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/GERONIMO-3141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jason Dillon closed GERONIMO-3141. ---------------------------------- Resolution: Fixed I've verified that the latest build w/this change works fine on the gbuild.org vms. Thanks :-) > potential deadlock in TransformerCollection > ------------------------------------------- > > Key: GERONIMO-3141 > URL: https://issues.apache.org/jira/browse/GERONIMO-3141 > Project: Geronimo > Issue Type: Bug > Security Level: public(Regular issues) > Affects Versions: 2.0-M6 > Reporter: Kevan Miller > Assigned To: Kevan Miller > Fix For: 2.0-M6 > > > Jason Dillon ran into the following deadlock: > Full thread dump Java HotSpot(TM) Client VM (1.5.0_11-b03 mixed mode): > "Finalizer" daemon prio=1 tid=0x080ceec8 nid=0x6b27 waiting for monitor entry [0xea45c000..0xea45d130] > at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:35) > at sun.instrument.TransformerManager.transform(TransformerManager.java:122) > at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:155) > at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:82) > at java.lang.ref.Finalizer.access$100(Finalizer.java:14) > at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:160) > "main" prio=1 tid=0x0805e6e8 nid=0x6b22 waiting for monitor entry [0xffc7c000..0xffc7d9a8] > at java.lang.ClassLoader.findBootstrapClass(Native Method) > at java.lang.ClassLoader.findBootstrapClass0(ClassLoader.java:891) > at java.lang.ClassLoader.loadClass(ClassLoader.java:301) > - locked <0xeaad5588> (a sun.misc.Launcher$ExtClassLoader) > at java.lang.ClassLoader.loadClass(ClassLoader.java:299) > - locked <0xeaad31e0> (a sun.misc.Launcher$AppClassLoader) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) > - locked <0xeaad31e0> (a sun.misc.Launcher$AppClassLoader) > at java.lang.ClassLoader.loadClass(ClassLoader.java:251) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) > - locked <0xeaad31e0> (a sun.misc.Launcher$AppClassLoader) > at java.lang.ClassLoader.defineClass1(Native Method) > at java.lang.ClassLoader.defineClass(ClassLoader.java:620) > at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) > at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) > at java.net.URLClassLoader.access$100(URLClassLoader.java:56) > at java.net.URLClassLoader$1.run(URLClassLoader.java:195) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:188) > at java.lang.ClassLoader.loadClass(ClassLoader.java:306) > - locked <0xeaad31e0> (a sun.misc.Launcher$AppClassLoader) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) > - locked <0xeaad31e0> (a sun.misc.Launcher$AppClassLoader) > at java.lang.ClassLoader.loadClass(ClassLoader.java:251) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) > - locked <0xeaad31e0> (a sun.misc.Launcher$AppClassLoader) > "VM Thread" prio=1 tid=0x080cb160 nid=0x6b23 runnable > "VM Periodic Task Thread" prio=1 tid=0x081ba5d0 nid=0x6b2b waiting on condition > Found one Java-level deadlock: > ============================= > "Finalizer": > waiting to lock monitor 0x080cfe04 (object 0xeaad31e0, a sun.misc.Launcher$AppClassLoader), > which is held by "main" > "main": > waiting to lock monitor 0x080cfe84 (object 0xee5e4a20, a [[I), > which is held by "Finalizer" > Gianny Damour found the following Sun bug report http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5088398. I also ran across the following OpenJPA jira -- https://issues.apache.org/jira/browse/OPENJPA-98 > Same basic issue -- ClassFileTransformer.transform() is causing two threads to obtain two ClassLoader locks in a different order -- thus the deadlock... > Barring a fix from Sun (IBM JDK fixed the problem reported in the OpenJPA Jira), moving geronimo-transformer.jar to the system classpath may avoid this problem (as suggested within the sun bug report). We may need all ClassFileTransformer implementation jars to be on the system classpath... -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.