RFR: 8375981: G1: Convert G1RemSet helper classes to use Atomic<T> [v2]

[Thomas Schatzl]

On Thu, 22 Jan 2026 09:23:20 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   * shade review
>
> src/hotspot/share/gc/g1/g1RemSet.cpp line 234:
> 
>> 232:           // either.
>> 233:         }
>> 234:         cur = next;
> 
> Wait a second, is it really the same? `next` is from fetch-then-add, so it is "old" value? Original code re-reads `_cur_dirty_regions`, which looks more like "new" value after fetch-then-add?

Thanks for catching this. Fixed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/29345#discussion_r2716066124