RFR 8210856: Move InstanceKlass DependencyContext cleaning to SystemDictionary::do_unloading()

[coleen.phillimore at oracle.com]

On 9/23/18 5:18 PM, Erik Osterlund wrote:
> Hi Coleen,
>
> Thank you for sorting this out. Looks good.

Thanks Erik,
Coleen
>
> Thanks,
> /Erik
>
>> On 21 Sep 2018, at 11:45, coleen.phillimore at oracle.com wrote:
>>
>> Summary: Already walk classes in ClassLoaderData::unload so generalize to also clean nmethod dependencies.
>>
>> The nmethod dependencies should be cleaned before metadata is purged.  See bug for more details.
>>
>> open webrev at http://cr.openjdk.java.net/~coleenp/8210856.01/webrev
>> bug link https://bugs.openjdk.java.net/browse/JDK-8210856
>>
>> Tested with hs tier1-7, modified gtest, and compiler/codecache/stress/RandomAllocationTest.java from bug https://bugs.openjdk.java.net/browse/JDK-8143408.
>>
>> Thanks,
>> Coleen
>>
>>