Integrated: 8272985: Reference discovery is confused about atomicity and degree of parallelism

[Thomas Schatzl]

On Tue, 31 Aug 2021 09:19:37 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   can I have reviews for this change that fixes some (apparent) confusion between atomicity (of the discovery in the `ReferenceProcessor` sense) vs. the currently selected degree of parallelism?
> 
> For all four different combinations of atomicity and parallelism the `discovered` link in the `java.lang.ref.Reference` needs to be updated differently using a different kind of access, instead of just two based on atomicity.
> 
> I'll fix the use of `atomic` in `ReferenceProcessor` in a separate CR to hopefully remove the confusion for the reader too.
> 
> Testing: tier1-5, internal perf benchmarks without regressions
> 
> Thanks,
>   Thomas

This pull request has now been integrated.

Changeset: fb5b144e
Author:    Thomas Schatzl <tschatzl at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/fb5b144eca761d4b4c667efe05ca638536c065ac
Stats:     82 lines in 3 files changed: 44 ins; 20 del; 18 mod

8272985: Reference discovery is confused about atomicity and degree of parallelism

Reviewed-by: ayang, kbarrett

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PR: https://git.openjdk.java.net/jdk/pull/5314