RFR: Refactor allocation seqnum handling: split mutator/GC allocs, merge with other metadata handling

[Roman Kennke]

Looks good to me.

On Tue, Feb 20, 2018 at 6:59 PM, Aleksey Shipilev <shade at redhat.com> wrote:
> http://cr.openjdk.java.net/~shade/shenandoah/alloc-seqnums/webrev.01/
>
> This refactors allocation seqnum machinery, so that we have more data to feed the heuristics with.
> Notably, this should help Roman's work on Traversal GC that wants to ignore some of the newly
> allocated regions.
>
> Testing: hotspot_gc_shenandoah {fastdebug|release}
>
> Thanks,
> -Aleksey
>