RFR: 8367240: Parallel: Refactor PSScavengeCLDClosure [v4]

[Francesco Andreuzzi]

On Tue, 9 Sep 2025 15:49:51 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Refactor `PSScavengeCLDClosure` and its "enclosing" `PSScavengeFromCLDClosure` so that all CLD logic is encapsulated in the CLD closure, without polluting the oop closure.
>> 
>> Test: tier1-3
>
> Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   review

src/hotspot/share/gc/parallel/psClosure.inline.hpp line 101:

> 99:       RawAccess<IS_NOT_NULL>::oop_store(p, new_obj);
> 100: 
> 101:       if (PSScavenge::is_obj_in_young(new_obj) && !_has_oops_into_young_gen) {

Why do you need to check `!_has_oops_into_young_gen` ?

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/27165#discussion_r2336199653