RFR: 8273915: Create 'nosafepoint' rank [v2]

[Coleen Phillimore]

On Mon, 20 Sep 2021 13:35:29 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Partition safepoint checking and nonchecking lock ranks. The nonchecking locks are always lower ranked than the safepoint checking locks because they cannot block.
>> 
>> This moves some leaf locks to 'nosafepoint' rank and corrects relative ranking.
>> 
>> Tested with tier1-6 and built and run tier1 tests with shenandoah locally.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove 'safepoint' rank, now unused.

Thanks for commenting, Ioi.

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PR: https://git.openjdk.java.net/jdk/pull/5550