RFR: 8028498: runtime/SharedArchiveFile/CdsDifferentObjectAlignment.java asserts in RT_Baseline

[Jesper Wilhelmsson]

Looks good!
/Jesper

Stefan Johansson skrev 29/1/14 2:54 PM:
> Hi,
>
> Please review this fix for:
> https://bugs.openjdk.java.net/browse/JDK-8028498
>
> Webrev:
> http://cr.openjdk.java.net/~sjohanss/8028498/webrev.00/
>
> Summary:
> The initial young generation size has been fairly small by default (1.5M) and if
> setting ObjectAlignmentInBytes to something larger than the default it can
> causes CDS to trigger a GC when dumping the archive. At this point the VM is not
> ready to handle a GC and we will hit an assertion. Making sure we can handle a
> GC at this point is not trivial and the proposed solution is to alter the
> default sizing of the young generation as well as adding a safety check when
> dumping the archive to exit the VM if the young generation is too small.
>
> Testing:
> * JPRT build and test passes
> * Failing test now passes on all platforms (tested throught JPRT)
> * Verified that the GC and Runtime jtreg tests still passes
>
> Cheers,
> Stefan