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From "Ilya Berezhniuk (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-4766) [drlvm][thread] ThreadGroup.destroy() does not destroy groups with non-started threads
Date Sat, 22 Sep 2007 11:02:50 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-4766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Ilya Berezhniuk updated HARMONY-4766:

    Attachment: H-4766.patch

Suggested patch implements desired ThreadGroup.destroy() behavior.
It does not affect other ThreadGroup functionality.

'build test' is passed except java.lang.ThreadGroupTest (which is evidently supposed to check
previous behavior).

I'm going to fix j.l.ThreadGroupTest and check other functional tests on ThreadGroup.

> [drlvm][thread] ThreadGroup.destroy() does not destroy groups with non-started threads
> --------------------------------------------------------------------------------------
>                 Key: HARMONY-4766
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4766
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Ilya Berezhniuk
>         Attachments: H-4766.patch, TG1.java, TG1.java, TG1.java
> While investigating HARMONY-4361 I've discovered that ThreadGroup.destroy() behavior
does not match RI behavior.
> I did not experiment with daemon groups, but for non-daemon groups ThreadGroup.destroy()
throws j.l.IllegalThreadStateException when trying to destroy thread group containing thread
which is not started yet.
> API spec. says: "This thread group must be empty, indicating that all threads that had
been in this thread group have since stopped"
> In other words, it should be possible to destroy group containing stopped thread, and
also containing subgroups with stopped threads.
> Spec. says nothing about non-started threads... 
> I've wrote simple test to check RI behavior, and on both Sun and BEA VMs it's OK to destroy
group with a thread which is not started yet.
> Harmony throws exception for not started threads.
> It's possible that some points in my test are incorrect, but it's evident that Harmony
behavior essentially differs from RI behavior.

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