RFR (XS) 8210559: ClassLoaderData Symbols can leak

[coleen.phillimore at oracle.com]

Thank you Jiangli and Lois.
Can you look at 02 too?  I added a whitebox function and to test 
UnloadTest.java.
http://cr.openjdk.java.net/~coleenp/8210559.01/webrev
thanks,
Coleen

On 9/12/18 9:44 PM, Jiangli Zhou wrote:
> +1
>
> Thanks,
>
> Jiangli
>
>
> On 9/12/18 6:28 PM, Lois Foltan wrote:
>> Looks good.
>> Lois
>>
>> On 9/12/2018 7:32 PM, coleen.phillimore at oracle.com wrote:
>>> Summary: unrefcount the symbol names when the CLD is destroyed
>>>
>>> I was going to clean up the sometimes null value of _name and 
>>> _name_and_id, and have the boot classloader data have a name, but 
>>> there's a bootstrapping problem.  NULL CLD is created before the 
>>> SymbolTable.  So this wasn't done.
>>>
>>> Tested with mach5 hs-tier1-3, and runThese jck which does a lot of 
>>> class unloading.
>>>
>>> open webrev at http://cr.openjdk.java.net/~coleenp/8210559.01/webrev
>>> bug link https://bugs.openjdk.java.net/browse/JDK-8210559
>>>
>>> Thanks,
>>> Coleen
>>>
>>>
>>
>