RFR: 8193065: [TESTBUG]GCSharedStringsDuringDump.java: Exception in thread "main" java.lang.RuntimeException: String is not shared.

Jiangli Zhou jiangli.zhou at oracle.com
Wed Dec 6 17:48:18 UTC 2017

Hi Calvin,

Thanks for the review. There could be only one string region if a single G1 region (in current execution) is large enough for all archived strings, in which case there would be only st0. I’m hesitate to add additional cases in the check for now without seeing the actual failure. We can add new case later if we run into any new failure case and investigate completely.



> On Dec 6, 2017, at 9:05 AM, Calvin Cheung <calvin.cheung at oracle.com> wrote:
> Hi Jiangli,
> Is it also possible that the st0/st1 space cannot be allocated if there's no heap space?
> Otherwise, it looks good.
> thanks,
> Calvin
> On 12/5/17, 3:19 PM, Jiangli Zhou wrote:
>> Please review the following test fix that detects missing ‘oa region’ as a failure when there are extra allocations/GCs during CDS dump time. When failures are detected, a larger heap size is used for dumping. Please see more detailed analysis in the bug report.
>> webrev: http://cr.openjdk.java.net/~jiangli/8193065/webrev.00/
>> bug: https://bugs.openjdk.java.net/browse/JDK-8193065?filter=14921<https://bugs.openjdk.java.net/browse/JDK-8193065?filter=14921>
>> Testing with hs tier1, tier2 and tier7.
>> Thanks,
>> Jiangli

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