RFR: 8228507: Archive FDBigInteger

[Jiangli Zhou]

Hi Claes,

This looks good to me. I wonder if FDBigInteger.archivedCaches could
be placed in  closed_archive_subgraph_entry_fields for the 'closed'
archive region? The makeImmutable() is called for the cached
FDBigInteger objects.

Best regards,
Jiangli

On Wed, Jul 24, 2019 at 2:41 AM Claes Redestad
<claes.redestad at oracle.com> wrote:
>
> Hi,
>
> any double<->String conversion will trigger load of
> jdk.internal.math.FDBigInteger, which has a static
> initializer pre-calculating a relatively large number
> of values.
>
> Archiving these pre-calculated values reduces the time
> spent in FDBigInteger.<clinit> from a couple of
> milliseconds down to "nothing".
>
> Bug:    https://bugs.openjdk.java.net/browse/JDK-8228507
> Webrev: http://cr.openjdk.java.net/~redestad/8228507/open.00/
>
> Testing: tier1-3
>
> Thanks!
>
> /Claes