RFR: 8280397: Factor out task queue statistics printing [v3]

[Thomas Schatzl]

On Fri, 28 Jan 2022 01:30:29 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> Thomas Schatzl has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains four commits:
>> 
>>  - Merge branch 'master' into 8280397-central-taskqueue-printing
>>  - kbarrett review, copyright dates
>>  - pliden review
>>  - Initial implementation using CollectedHeap
>
> Marked as reviewed by mli (Reviewer).

Thanks @Hamlin-Li @pliden @kimbarrett for your reviews!

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PR: https://git.openjdk.java.net/jdk/pull/7174