[jdk17u-dev] RFR: 8317960: [17u] Excessive CPU usage on AbstractQueuedSynchronized.isEnqueued [v2]

[Paul Hohensee]

On Fri, 13 Oct 2023 14:32:33 GMT, David Alvarez <duke at openjdk.org> wrote:

>> This patch brings the AbstractQueuedSynchronizer related changes from [JDK-8277090](https://bugs.openjdk.org/browse/JDK-8277090) to fix a performance issue that can happen in JDK17 too.
>> 
>> The rest of JDK-8277090 are done mostly in preparation of virtual threads and are covered under CSR [JDK-8285450](https://bugs.openjdk.org/browse/JDK-8285450). There is no plan at the moment to backport the rest of the changes to 17.
>
> David Alvarez has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Empty commit to trigger tests

Marked as reviewed by phh (Reviewer).

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PR Review: https://git.openjdk.org/jdk17u-dev/pull/1875#pullrequestreview-1688634651