RFR: 8302215: G1: Last-ditch Full GC should do serial compaction for tail regions in per thread compaction points. [v4]

[Ivan Walulya]

On Fri, 17 Feb 2023 08:35:54 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Ivan Walulya has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   combine prepare with adding regions to compaction point
>
> src/hotspot/share/gc/g1/g1FullCollector.cpp line 382:
> 
>> 380:   HeapWord* dense_prefix_top = nullptr;
>> 381:   for (uint i = lowest_current; i < _heap->max_reserved_regions(); i++) {
>> 382:     if (_region_attr_table.is_free(i) || _region_attr_table.is_compacting(i)) {
> 
> Suggestion:
> 
>     if (is_compaction_target(i)) {
> 
> This predicate is already available.

Thanks, I missed that.

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PR: https://git.openjdk.org/jdk/pull/12529