RFR: 8368670: Deadlock in JFR on event register + class load

[Markus Grönlund]

On Wed, 1 Oct 2025 16:56:53 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

> Could I have a review a PR that prevents a deadlock? The MetadataRepository::isEnabled check is an optimization that allows JFR to instrument disabled event classes lazily.
> 
> The available settings object is never modified after it has been created, so it is sufficient to publish it using a volatile.
> 
> 
> Testing: jdk/jdk/jfr
> 
> Thanks
> Erik

Nice.

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Marked as reviewed by mgronlun (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27592#pullrequestreview-3294066759