RFR: 8273476: G1: refine G1CollectedHeap::par_iterate_regions_array_part_from

[Thomas Schatzl]

On Wed, 8 Sep 2021 11:56:14 GMT, Hamlin Li <mli at openjdk.org> wrote:

> G1CollectedHeap::par_iterate_regions_array_part_from is moved from G1CollectionSet::iterate_part_from in JDK-8254167.
> The parameters and logic of this method could be refined a bit to make it more straight.

Changes requested by tschatzl (Reviewer).

src/hotspot/share/gc/g1/g1CollectionSet.cpp line 239:

> 237:                                             hr_claimer,
> 238:                                             &_collection_set_regions[offset],
> 239:                                             length-offset,

please add spaces around the `-` operator.

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PR: https://git.openjdk.java.net/jdk/pull/5414