RFR: 8221785: Let possibly_parallel_threads_do cover the same threads as threads_do [v2]

[Thomas Schatzl]

On Thu, 26 Jan 2023 11:05:07 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

>> Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   coleenp review
>
> Lgtm!

Thanks @walulyai @coleenp for your reviews

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PR: https://git.openjdk.org/jdk/pull/12201