RFR: 8227086: Use AS_NO_KEEPALIVE loads in HeapDumper

[Stefan Karlsson]

Thanks, Serguei.

StefanK

On 2019-07-02 17:57, serguei.spitsyn at oracle.com wrote:
> Hi Stefan,
>
> It looks good.
>
> Thanks,
> Serguei
>
>
>
> On 7/2/19 06:53, Stefan Karlsson wrote:
>> Hi all,
>>
>> Please review this patch to read objects with AS_NO_KEEPALIVE in the 
>> HeapDumper.
>>
>> http://cr.openjdk.java.net/~stefank/8227086/webrev.01/
>> https://bugs.openjdk.java.net/browse/JDK-8227086
>>
>> Found this while running some extra verification code through our 
>> barriers. This is one place where we use ON_UNKNOWN_OOP_REF without 
>> AS_NO_KEEPALIVE. The current code isn't wrong, but we could just as 
>> well use the more light-weight load barrier here.
>>
>> Tested with tier 1-7
>>
>> Thanks,
>> StefanK
>