RFR: 8328928: Serial: Use IsGCActiveMark instead of AutoModifyRestore in SerialHeap::do_collection

[Guoxiong Li]

On Mon, 25 Mar 2024 14:34:20 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Hi all,
>> 
>> This patch uses `IsGCActiveMark` instead of `AutoModifyRestore` in `SerialHeap::do_collection` so that all the GCs use the `IsGCActiveMark` uniformly. The tests `make test-tier1_gc` passed locally.
>> 
>> Thanks for taking the time to review.
>> 
>> Best Regards,
>> -- Guoxiong
>
> Marked as reviewed by ayang (Reviewer).

@albertnetymk @tschatzl Thanks for the review.

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PR Comment: https://git.openjdk.org/jdk/pull/18473#issuecomment-2020599872