RFR: 8231242: G1CollectedHeap::print_regions_on lost description for "OA" and "CA"

[Thomas Schatzl]

Hi,

On Thu, 2019-09-19 at 18:56 +0800, huangjia wrote:
> Hi all,
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8231242
> 
> When dumping the info of heap region, the description for "OA" and
> "CA" seems to be lost.
> Please review the following fix which improves the readability of
> the heap region log.
> -----------------------------------
> diff -r 778fc2dcbdaa src/hotspot/share/gc/g1/g1CollectedHeap.cpp
> --- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp       Wed Sep 18 
> 20:49:13 2019 -0400
> +++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp       Thu Sep 19 
> 11:47:07 2019 +0800
> @@ -2378,6 +2378,7 @@
>     st->print_cr("Heap Regions: E=young(eden), S=young(survivor),
> O=old, "
>                  "HS=humongous(starts), HC=humongous(continues), "
>                  "CS=collection set, F=free, A=archive, "
> +               "OA=open archive, CA=closed archive, "
>                  "TAMS=top-at-mark-start (previous, next)");

The fix should also remove the "A=archive" description - there will
afaik no plain "A" regions any more.

Thanks,
  Thomas