RFR 8217846: [Graal] vmTestbase/nsk/jdi/VirtualMachine/instanceCounts/instancecounts003/instancecounts003.java crash

coleen.phillimore at oracle.com coleen.phillimore at oracle.com
Wed May 8 12:38:18 UTC 2019


Harold, This looks good.  From both files, can you remove the line

// GC walks these as strong roots

Since it doesn't walk CLD::_klasses anymore.
Thanks,
Coleen

On 5/8/19 8:33 AM, Harold Seigel wrote:
> Hi Lois,
>
> Thanks for the review!
>
> It is convenient to leave the calls to add_class() where they are 
> because the loader_data is already available in those functions. 
> Moving the calls to add_class() to complete_create_array_klass() would 
> require extracting the loader_data in that function or passing it as 
> an additional parameter.
>
> Thanks, Harold
>
> On 5/7/2019 3:27 PM, Lois Foltan wrote:
>> On 5/7/2019 1:05 PM, Harold Seigel wrote:
>>> Hi,
>>>
>>> Please review this fix for JDK-8217846.  The fix adds array classes 
>>> to their classLoaderData list after creating the class's mirror 
>>> because if mirror creation fails (perhaps because of an OOME) then 
>>> the class should not be added to its classLoaderData list.
>>>
>>> Open Webrev: http://cr.openjdk.java.net/~hseigel/bug_8217846/webrev/
>>>
>>> JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8217846
>>>
>>> The fix was tested by running the test over 1000 times.
>>>
>>> The fix was regression tested by running Mach5 tiers 1 and 2 tests 
>>> and builds on Linux-x64, Solaris, Windows, and Mac OS X and by 
>>> running Mach5 tiers 3-7 tests on Linux-x64.
>>>
>>> Thanks, Harold
>>>
>>
>> Hi Harold,
>>
>> This looks good.  Would you consider moving the code to add the array 
>> class to the its class loader list into 
>> ArrayKlass::complete_create_array_klass as the last step, post mirror 
>> creation?
>>
>> Thanks,
>> Lois



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