RFR: 8273915: Create 'nosafepoint' rank

Mon Sep 20 13:29:45 UTC 2021

On Thu, 16 Sep 2021 17:11:30 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.

Thank you David for reviewing this.

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