Bugs item #644439, was opened at 2002-11-27 00:40
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=376685&aid=644439&group_id=22866
Category: JBossMX
Group: v3.2
Status: Open
Resolution: None
Priority: 5
Submitted By: Bill Alexander (balexander)
Assigned to: Nobody/Anonymous (nobody)
Summary: Deadlock in ClassLoader
Initial Comment:
We are intermittently seeing deadlocks between two
threads in classloader code. The scenario goes
something like this:
Thread 1
org.jboss.mx.loading.HeirarchicalLoaderRepo
sitory2.loadClass(java.lang.String, boolean,
java.lang.ClassLoader) line: 88
org.jboss.mx.loading.UnifiedClassLoader.load
Class(String, boolean) line: 283
java.lang.ClassLoader.loadClass(String) line:
262
java.lang.ClassLoader.loadClassInternal
(String) line: 322
java.lang.Class.forName0(String, boolean,
ClassLoader)
java.lang.Class.forName(String, boolean,
ClassLoader)
... remaining, irrelevant stuff deleted.
Thread 2
java.lang.ClassLoader.loadClass(String,
boolean) line: 288
org.jboss.mx.loading.UnifiedClassLoader.load
ClassLocally(String, boolean) line: 234
org.jboss.mx.loading.UnifiedLoaderRepository
2)loadClassFromClassLoader(String, boolean,
ClassLoader) line: 234
org.jboss.mx.loading.HeirarchicalLoaderRepo
sitory2.loadClass(String, boolean, ClassLoader) line: 94
org.jboss.mx.loading.UnifiedClassLoader.load
Class(String, boolean) line: 283
java.lang.ClassLoader.loadClass(String) line:
262
Thread 1 has the lock on the class, and waits for the
lock on the repository, while Thread 2 has the lock on
the repository, and waits for the lock on the class.
We are running JBoss-3.2.0beta on Windows 2000sp2.
JDK is 1.4.0_01.
Is this bug the same as this forum entry?
http://www.jboss.org/forums/thread.jsp?
forum=66&thread=12454&message=3706157&q=thread+
deadlock+classloader#3706157
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