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https://issues.apache.org/jira/browse/FELIX-4190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13727714#comment-13727714
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Richard S. Hall commented on FELIX-4190:
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Reiterating a comment from email:
Technically, I think this patch is not correct.
We specifically allow for bundles that already hold the service reference to
acquire the service object while a service is being unregistered (see comments
in ServiceRegistry.unregisterService()). This means that a bundle that already
holds the service reference could, technically, acquire the unregistering
service just after you call getUsingBundles(), thus we wouldn't be forcing it
to unget.
The only way I think we can do what you want is to somehow acquire the registry
lock (i.e., this) again and put us into some new state that doesn't allow any
more bundles to acquire the unregistering service...or perhaps by adding
something to the service registration to put it into a new state where it won't
return anything from getService. Then we could release the registry lock and
continue with what you have.
> The framework should not hold any lock while calling ServiceFactory#unget
> -------------------------------------------------------------------------
>
> Key: FELIX-4190
> URL: https://issues.apache.org/jira/browse/FELIX-4190
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Reporter: Guillaume Nodet
> Assignee: Guillaume Nodet
> Fix For: framework-4.4.0
>
>
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