RFR(S): 8132713: Add tests which check that Humongous objects behave as expected after finishing ConcMark Cycle

[Kirill Zhaldbybin]

Dmitry,

Thank you for review!
Regards, Kirill

On 05/11/2016 02:07 PM, Dmitry Fazunenko wrote:
> Hi Kirill,
>
> The fix looks good to me.
> One minor suggestion:
> -Xlog:gc=
> -->
> -Xlog:gc*=
> In case of failure the more data available the better.
> (I don't need a separate review for that change).
>
>
> Thanks,
> Dima
>
>
> On 11.05.2016 13:42, Kirill Zhaldbybin wrote:
>> Dear all,
>>
>> Could you please review this fix for 8132713?
>>
>> This fix adds two CMC scenarios to 
>> gc/g1/humongousObjects/objectGraphTest/TestObjectGraphAfterGC.java 
>> which creates different types of object graphs with Object arrays as 
>> nodes (to make them humongous) and checks that after different types 
>> GCs objects' graphs were handled correctly.
>>
>> During first CMC scenario the test expects that weakly reachable 
>> non-humongous nodes which are not referenced by weakly reachable 
>> humongous nodes should be collected and other weakly reachable nodes 
>> should not be collected (since weakly reachable non-humongous nodes 
>> are in young gen and during CMC they are handled as strong roots).
>> During second CMC scenario the test expects that all weakly reachable 
>> nodes should be collected since non-humongous nodes were previously 
>> promoted to old gen.
>> During both scenarios softly reachable nodes should not be collected.
>>
>> WebRev: 
>> http://cr.openjdk.java.net/~kzhaldyb/webrevs/JDK-8132713/webrev.00/
>> CR: https://bugs.openjdk.java.net/browse/JDK-8132713
>>
>> Thank you.
>>
>> Regards, Kirill
>

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