RFR: 8277736: G1: Allow forced evacuation failure of first N regions in collection set [v2]

[Thomas Schatzl]

On Wed, 1 Dec 2021 09:48:26 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> That could be extended to `RandomRegions` later.
>> 
>> This needs another flag though, maybe something like `G1EvacuationFailureALotObjectSelectionType` (random name right now, probably you will come up with something better).
>
> I think you mean we add this option when implement https://bugs.openjdk.java.net/browse/JDK-8277851, am I right? If positive, sure, it make sense to me, it's much easier to extend the algorithms in the future.

I am good with deferring the additional flag.

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PR: https://git.openjdk.java.net/jdk/pull/6561