[jdk11u] RFR: 8315683: Parallelize java/util/concurrent/tck/JSR166TestCase.java

[Aleksey Shipilev]

On Fri, 22 Sep 2023 14:47:20 GMT, Soumadipta Roy <duke at openjdk.org> wrote:

> Backport 4415261688dc258b6d254668bcf8818c61cc65ea to JDK11u.
> 
> Backporting the fix for https://bugs.openjdk.org/browse/JDK-8315683 merged as part of https://github.com/openjdk/jdk/pull/15619. https://github.com/openjdk/jdk/commit/4415261688dc258b6d254668bcf8818c61cc65ea.patch could not be cleanly applied as `@run junit/othervm/timeout=1000 -Djava.security.manager=allow JSR166TestCase` is not applicable for JDK11.
> 
> The tests passed in release mode in linux_x86_64 with time: **462.54s user 21.92s system 1099% cpu 44.077 total**
> Before it was: **325.80s user 21.64s system 534% cpu 1:05.04 total**
> 
> Passed: java/util/concurrent/tck/JSR166TestCase.java#default
> Passed: java/util/concurrent/tck/JSR166TestCase.java#others
> Passed:
> java/util/concurrent/tck/JSR166TestCase.java#forkjoinpool-common-parallelism
> Test results: passed: 3

This PR needs to be against jdk11u-dev, not jdk11u.

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Changes requested by shade (Reviewer).

PR Review: https://git.openjdk.org/jdk11u/pull/84#pullrequestreview-1645973820