[jdk11u-dev] RFR: 8276201: Shenandoah: Race results degenerated GC to enter wrong entry point

[Aleksey Shipilev]

On Wed, 10 Nov 2021 15:50:53 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

> This is a Shenandoah specific backport. It fixes a race that results degenerated GC to enter wrong degen entry point.
> 
> The original patch does not apply cleanly due to code divergence, especially the grand refactoring that is not in jdk11u. However, the backport is simple and straight forward.
> 
> Test:
> - [x] hotspot_gc_shenandoah

Looks fine.

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Marked as reviewed by shade (Reviewer).

PR: https://git.openjdk.java.net/jdk11u-dev/pull/612