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Posted to commits@harmony.apache.org by "Eugene S. Ostrovsky (JIRA)" <ji...@apache.org> on 2007/03/13 14:01:48 UTC
[jira] Updated: (HARMONY-3381) [drlvm][shutdown] unsafe termination
of daemon threads
[ https://issues.apache.org/jira/browse/HARMONY-3381?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eugene S. Ostrovsky updated HARMONY-3381:
-----------------------------------------
Attachment: changing-shutdown-to-exit-threads-instead-of-throwing-exception.patch
Added patch:
changing-shutdown-to-exit-threads-instead-of-throwing-exception.patch
Implements new daemon threads termination approach:
1. running threads exit in safe points
2. blocked threads are cancelled
> [drlvm][shutdown] unsafe termination of daemon threads
> ------------------------------------------------------
>
> Key: HARMONY-3381
> URL: https://issues.apache.org/jira/browse/HARMONY-3381
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Eugene S. Ostrovsky
> Attachments: changing-shutdown-to-exit-threads-instead-of-throwing-exception.patch
>
>
> vm_shutdown_stop_java_threads() function tries to terminate daemon threads by setting TheadDeath exception to them and interrupting in infinite loop.
> 1. There's a race condition in this algorithm: No one can guarantee that continuous setting TheadDeath exception to a thread will force it to terminate.
> 2. TheadDeath is throwing in the points that may not be safe for exception throwing. This may lead to vm crash (or assertion).
> ( Such crash was reproduced on win/ia32 on gc.Mark smoke test with the patch from HARMONY-3297)
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