[jira] [Commented] (ARTEMIS-1356) Avoid allocations and atomic operations to recognize handler's thread

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARTEMIS-1356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16135153#comment-16135153 ] 

ASF GitHub Bot commented on ARTEMIS-1356:
-----------------------------------------

GitHub user franz1981 opened a pull request:

    https://github.com/apache/activemq-artemis/pull/1477

    ARTEMIS-1356 Avoid allocations and atomic operations to recognize handler's thread

    Uses a cached marker instance to recognize an handler's thread, avoiding allocations and atomic operations.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/franz1981/activemq-artemis gc_free_recursion

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/activemq-artemis/pull/1477.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1477
    
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> Avoid allocations and atomic operations to recognize handler's thread
> ---------------------------------------------------------------------
>
>                 Key: ARTEMIS-1356
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1356
>             Project: ActiveMQ Artemis
>          Issue Type: Improvement
>          Components: Broker
>            Reporter: Francesco Nigro
>            Assignee: Francesco Nigro
>
> The current way to recognize the handler's thread is using heavyweight operations (allocations + atomic set/get) that limit some compiler optimizations on the (core) packet handling path.
> The same logic can be achieved using only a ThreadLocal map and a cached marker instance.



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