RFR: 8365057: Add support for java.util.concurrent lock information to Thread.dump_to_file [v2]

[Alan Bateman]

On Wed, 24 Sep 2025 19:59:55 GMT, Alex Menkov <amenkov at openjdk.org> wrote:

>> The fix updates `jcmd Thread.dump_to_file`/`HotSpotDiagnosticMXBean.dumpThreads` implementation to report thread which owns parkBlocker.
>> 
>> Testing: tier1..4,hs-tier5-svc
>
> Alex Menkov has updated the pull request incrementally with one additional commit since the last revision:
> 
>   feedback

src/java.base/share/classes/jdk/internal/vm/ThreadSnapshot.java line 47:

> 45:     private int blockerTypeOrdinal;
> 46:     private Object blockerObject;
> 47:     // the owner of the blockerObject when the object is park blocker and is AQS

Typo here, AQS != AbstractOwnableSynchronizer

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PR Review Comment: https://git.openjdk.org/jdk/pull/27457#discussion_r2377970208