RFR: 8274286: Skip null for make_referent_alive in referenceProcessor

Tue Sep 28 05:35:02 UTC 2021

On Fri, 24 Sep 2021 13:42:14 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple change of avoiding a virtual call for null referent. With this change, two methods of processing the discovered list, `process_discovered_list_work` and `preclean_discovered_reflist`, share the same structure.
> 
> Test: hotspot_gc

Changes requested by kbarrett (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/5682