[
https://issues.apache.org/jira/browse/FELIX-3000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050565#comment-13050565
]
Richard S. Hall commented on FELIX-3000:
----------------------------------------
Regarding Callbacks, original the service registry used a full-blown listener
pattern, but this seemed overkill since the framework was the only listener,
thus I replaced that with a single "callbacks" object. What we are essentially
proposing is to remove any notion of events from the service registry and
handle them completely externally. I think the tricky one is unregister.
Regarding 4.0, I don't think it will be done until end of July at the earliest.
Branching is not a big deal, really, we just create a branch from the 3.2.2
tag, apply the fix, do a release, remove the branch. So, if we have to go that
route, then no big deal. It only becomes more difficult if there are a lot of
other issues to port over from trunk to the branch...but we could only include
this one issue.
> Move sending service registered event out of bundle lock
> --------------------------------------------------------
>
> Key: FELIX-3000
> URL: https://issues.apache.org/jira/browse/FELIX-3000
> Project: Felix
> Issue Type: Improvement
> Components: Framework
> Affects Versions: framework-3.0.7, framework-3.2.2
> Reporter: Felix Meschberger
> Fix For: framework-4.0.0
>
> Attachments: FELIX-3000-stacktrace.txt, FELIX-3000.patch
>
>
> We have a strange situation on a Framework 3.0.7 based system here which is
> not reproducible on all platforms.
> We can track down a system freeze/deadlock to three threads all contending
> for bundle locks and the global lock. See attached FELIX-3000-stacktrace.txt
> for the stack trace.
> Looking at the Framework source, particularly acquireBundleLock and
> acquireGlobalLock I cannot see where this "deadlock" can occur.
> The only hint I have is a note in the Felix.registerService:
> > // TODO: CONCURRENCY - Reconsider firing event here, outside of the
> > // bundle lock.
> I wonder whether this situation can be fixed with moving the service
> registration event ?
> Looking at the code it seems to have not been changed. Thus I report this
> against 3.0.7 where we saw this and 3.2.2 being the latest release.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
