RFR 8232010: Shenandoah: implement self-fixing native barrier

[Zhengyu Gu]

On 10/18/19 9:13 AM, Roman Kennke wrote:
> Would a similar implementation also work for the non-native LRB?

Yes, just need to make LRB stub to take the second parameter.

> 
> It's lacking an aarch64 implementation, right?

aarch64 misses all recent barrier changes. I intent to implement them 
after stabilize x86.

Thanks,

-Zhengyu

> 
> Roman
> 
> 
>> Please review this patch that implements self-fixing LRB for in native
>> oops.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8232010
>> Webrev: http://cr.openjdk.java.net/~zgu/JDK-8232010/webrev.00/
>>
>> Test:
>>    hotspot_gc_shenandoah (fastdebug and release) with x86_32 and x86_64
>> JVM on Linux.
>>
>> Thanks,
>>
>> -Zhengyu
>>
>