RFR: 8373118: Test java/lang/Thread/virtual/Starvation.java timed out [v32]

[Viktor Klang]

On Mon, 9 Feb 2026 09:32:51 GMT, Doug Lea <dl at openjdk.org> wrote:

>> Changes signal filtering to avoid possible starvation
>
> Doug Lea has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 45 additional commits since the last revision:
> 
>  - Merge branch 'openjdk:master' into JDK-8373118
>  - setup for helpJoin
>  - Merge branch 'openjdk:master' into JDK-8373118
>  - reduce interference after stalls
>  - Avoid yield, for performance test
>  - Don't oversignal LIFO
>  - Try out different approach
>  - Simplify scan mode control by moving and reworking topLevelExec and throwing on trim
>  - Another set of contend vs deactivate vs park tradeoffs
>  - Fix missing undo
>  - ... and 35 more: https://git.openjdk.org/jdk/compare/ce27d5c9...1b9272b3

src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 1984:

> 1982:                                 if (qid != (prevSrc = src))
> 1983:                                     w.source = src = qid;
> 1984:                                 U.storeFence();

@DougLea Since `source` is `volatile` again, we only need the storeFence in an `else` here?

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PR Review Comment: https://git.openjdk.org/jdk/pull/28797#discussion_r2781581201