RFR: 8272788: Nonleaf ranked locks should not be safepoint_check_never [v2]

[Coleen Phillimore]

On Mon, 23 Aug 2021 13:03:10 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> I moved nonleaf ranked locks to be leaf (or leaf+something).  Many of the leaf locks are safepoint_check_never.  Segregating this rank into safepoint checking and non-safepoint checking is left for a future RFE.
>> Tested with tier1-3.  Tier 4-6 testing in progress.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove JfrSream_lock and rerun JFR tests.

Yes, eventually I'd like there to be a more strict relationship between rank and safepoint checking, so that's why I moved these locks down in the ranking system.  Thank you Erik!

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PR: https://git.openjdk.java.net/jdk/pull/5203