[jdk21u-dev] Integrated: 8371889: [21u] JFR: Deadlock in ThrowableTracer

[Roman Kennke]

On Wed, 19 Nov 2025 13:58:35 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

> This change initializes the event configurations (known as event handlers in earlier JDKs) early, in order to avoid potential deadlocks (see [description in the issue](https://bugs.openjdk.org/browse/JDK-8371889)).
> 
> JDK 21 is the last JDK where this is relevant, that code has been completely reworked in JDK 22 (e.g. [JDK-8319374](https://bugs.openjdk.org/browse/JDK-8319374)).
> 
> Testing:
>  - [x] jdk/jfr
>  - [x] tier1

This pull request has now been integrated.

Changeset: 3d2439c4
Author:    Roman Kennke <rkennke at openjdk.org>
URL:       https://git.openjdk.org/jdk21u-dev/commit/3d2439c46b889d31f1eb4b2283138c0215a97374
Stats:     8 lines in 2 files changed: 8 ins; 0 del; 0 mod

8371889: [21u] JFR: Deadlock in ThrowableTracer

Reviewed-by: egahlin, jbachorik

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PR: https://git.openjdk.org/jdk21u-dev/pull/2483