RFR: 8205050: ZGC: Incorrect use of RootAccess in ZHeapIterator

[Per Liden]

Thanks Stefan!

/Per

On 06/14/2018 05:14 PM, Stefan Karlsson wrote:
> Looks good.
> 
> StefanK
> 
> On 2018-06-14 16:44, Per Liden wrote:
>> In ZHeapIteratorRootOopClosure::do_oop() we're using 
>> RootAccess<>::oop_load() to load oops. However, as the comment right 
>> above that line suggests, that's incorrect and we should have a load 
>> barrier here. In fact, we used to have a load barrier here, but this 
>> was for some mysterious reason changed. We should revert back to the 
>> code that used to be there.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8205050
>> Webrev: http://cr.openjdk.java.net/~pliden/8205050/webrev.0
>>
>> cheers,
>> Per
> 
>