RFR: 8324582: Replace -Djava.util.concurrent.ForkJoinPool.common.parallelism to -Djdk.virtualThreadScheduler.maxPoolSize/parallelism in jvmti vthread tests [v3]

[Serguei Spitsyn]

On Wed, 24 Jan 2024 21:01:37 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:

>> Some jvmti tests use
>> -Djava.util.concurrent.ForkJoinPool.common.parallelism
>> to control the pool of virtual threads. However, it is controlled by
>> jdk.virtualThreadScheduler.parallelism property.
>> 
>> The non-continuations implementation doesn't use any of these properties and it was just deleted.
>> 
>> I verified the fix using jcmd Thread.dump and ran all jvmti tests in the default configuration.
>
> Leonid Mesnik has updated the pull request incrementally with one additional commit since the last revision:
> 
>   update copyrights years

This looks good but one test may still need an update?

test/hotspot/jtreg/serviceability/jvmti/vthread/VThreadEventTest/VThreadEventTest.java line 210:

> 208: 
> 209: }
> 210: 

Does this test also need an update?
It has a line 32:
    *   -Djdk.virtualThreadScheduler.parallelism=9

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Marked as reviewed by sspitsyn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/17547#pullrequestreview-1844041016
PR Review Comment: https://git.openjdk.org/jdk/pull/17547#discussion_r1466558265