RFR: 8360312: Serviceability Agent tests fail with JFR enabled due to unknown thread type JfrRecorderThread [v2]

[David Holmes]

On Wed, 25 Jun 2025 06:34:10 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

>> Update SA to know about JfrRecorderThread, which was made a JavaThread in JDK 25 by [JDK-8352251](https://bugs.openjdk.org/browse/JDK-8352251).
>> 
>> I'm also fixing ClhsdbJstackWithConcurrentLock, which was also failing with JFR enabled, but for a different reason (specified heap size was too small).
>> 
>> Testing (in progress):
>> 
>> - [x] tier1 ci
>> - [x] tier1 ci with -XX:StartFlightRecording 
>> - [x] tier5 ci
>
> Chris Plummer has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fix copyright

Marked as reviewed by dholmes (Reviewer).

-------------

PR Review: https://git.openjdk.org/jdk/pull/25960#pullrequestreview-2956862618