RFR: 8283558: Parallel: Pass PSIsAliveClosure to ReferenceProcessor constructor

[Albert Mingkun Yang]

On Wed, 23 Mar 2022 12:17:09 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple change around non-strong ref discovery in young-gc ref-processing.
> 
> Test: tier1-6

Thanks for the review.

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PR: https://git.openjdk.java.net/jdk/pull/7918