[
https://issues.apache.org/jira/browse/JAMES-767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630266#action_12630266
]
Markus Wiederkehr commented on JAMES-767:
-----------------------------------------
Okay, here is what I have figured out so far. I have included the source code
of excalibur-thread-impl-2.1.jar in my Eclipse project. This jar-file contains
the class DefaultThreadPool in question.
This is the critical code:
73: public void dispose()
74: {
75: m_pool.dispose();
76: this.destroy();
77: }
DefaultThreadPool extends ThreadGroup so this.destroy() in line 76 actually
call ThreadGroup.destroy().
I put an invocation of ThreadGroup.list() between lines 75 and 76 and this is
what I get as output:
org.apache.avalon.excalibur.thread.impl.DefaultThreadPool[name=default,maxpri=10]
Thread[default Worker #0,5,default]
So the ThreadGroup cannot be destroyed because there is still a worker thread
lingering around.
The m_pool in line 75 is actually a SoftResourceLimitingPool from
excalibur-pool-impl-2.1.jar. This SoftResourceLimitingPool extends DefaultPool
which has the following dispose method:
public final void dispose()
{
try
{
m_mutex.acquire();
try
{
while( m_ready.size() > 0 )
{
this.removePoolable( (Poolable)m_ready.remove() );
}
}
finally
{
m_mutex.release();
}
}
catch( Exception e )
{
if( getLogger().isWarnEnabled() )
{
getLogger().warn( "Caught an exception disposing of pool", e );
}
}
this.m_disposed = true;
}
So it removes all elements from its ready pool. But if you take a look at the
base class AbstractPool you see that there is also a list of active elements
m_active, which seems to be ignored in the dispose method in DefaultPool.
So to summarize it looks like active threads in the pool are not terminated and
as a result the TreadGroup cannot be destroyed.
Maybe someone can take it from here?
> exception when shutting down server
> -----------------------------------
>
> Key: JAMES-767
> URL: https://issues.apache.org/jira/browse/JAMES-767
> Project: James
> Issue Type: Bug
> Affects Versions: 2.3.0
> Environment: Mac OS X 10.4.8, intel Mac 2.16 GHz dual core, Java VM
> build 1.5.0_06-112
> Reporter: Ray Kiddy
> Priority: Minor
>
> I have set up a James server to test a mail client. I configure it with the
> IP address of the machine. I do not use DNS, but instead us e-mail addresses
> like "[EMAIL PROTECTED]". When I shut down the server with ctl-C, I get:
> ^CJVM exiting abnormally. Shutting down Phoenix.
> org.apache.avalon.phoenix.containerkit.lifecycle.LifecycleException:
> Component named "thread-manager" failed to pass through the Destruction
> stage. (Reason: java.lang.IllegalThreadStateException).
> at
> org.apache.avalon.phoenix.containerkit.lifecycle.LifecycleHelper.fail(LifecycleHelper.java:354)
> at
> org.apache.avalon.phoenix.containerkit.lifecycle.LifecycleHelper.shutdown(LifecycleHelper.java:288)
> at
> org.apache.avalon.phoenix.components.application.DefaultApplication.shutdown(DefaultApplication.java:566)
> at
> org.apache.avalon.phoenix.components.application.DefaultApplication.doRunPhase(DefaultApplication.java:482)
> at
> org.apache.avalon.phoenix.components.application.DefaultApplication.runPhase(DefaultApplication.java:409)
> at
> org.apache.avalon.phoenix.components.application.DefaultApplication.stop(DefaultApplication.java:233)
> at
> org.apache.avalon.framework.container.ContainerUtil.stop(ContainerUtil.java:292)
> at
> org.apache.avalon.framework.container.ContainerUtil.shutdown(ContainerUtil.java:66)
> at
> org.apache.avalon.phoenix.components.kernel.DefaultKernel.shutdown(DefaultKernel.java:346)
> at
> org.apache.avalon.phoenix.components.kernel.DefaultKernel.removeApplication(DefaultKernel.java:455)
> at
> org.apache.avalon.phoenix.components.deployer.DefaultDeployer.undeploy(DefaultDeployer.java:244)
> at
> org.apache.avalon.phoenix.components.deployer.DefaultDeployer.dispose(DefaultDeployer.java:154)
> at
> org.apache.avalon.framework.container.ContainerUtil.dispose(ContainerUtil.java:306)
> at
> org.apache.avalon.framework.container.ContainerUtil.shutdown(ContainerUtil.java:67)
> at
> org.apache.avalon.phoenix.components.embeddor.DefaultEmbeddor.shutdownComponents(DefaultEmbeddor.java:598)
> at
> org.apache.avalon.phoenix.components.embeddor.DefaultEmbeddor.dispose(DefaultEmbeddor.java:342)
> at
> org.apache.avalon.framework.container.ContainerUtil.dispose(ContainerUtil.java:306)
> at
> org.apache.avalon.framework.container.ContainerUtil.shutdown(ContainerUtil.java:67)
> at
> org.apache.avalon.phoenix.frontends.CLIMain.shutdown(CLIMain.java:326)
> at
> org.apache.avalon.phoenix.frontends.CLIMain.forceShutdown(CLIMain.java:295)
> at
> org.apache.avalon.phoenix.frontends.ShutdownHook.run(CLIMain.java:386)
> Caused by: java.lang.IllegalThreadStateException
> at java.lang.ThreadGroup.destroy(ThreadGroup.java:750)
> at
> org.apache.avalon.excalibur.thread.impl.DefaultThreadPool.dispose(DefaultThreadPool.java:76)
> at
> org.apache.avalon.framework.container.ContainerUtil.dispose(ContainerUtil.java:306)
> at
> org.apache.avalon.cornerstone.blocks.threads.AbstractThreadManager.dispose(AbstractThreadManager.java:69)
> at
> org.apache.avalon.framework.container.ContainerUtil.dispose(ContainerUtil.java:306)
> at
> org.apache.avalon.phoenix.containerkit.lifecycle.LifecycleHelper.shutdown(LifecycleHelper.java:274)
> ... 19 more
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
