[8u] Shenandoah SA: Support live region iteration

[Zhengyu Gu]

On 12/10/19 10:46 AM, Roman Kennke wrote:
> Hi Zhengyu,
> 
> Could this go to an appropriate Jira-ID as backport? E.g.:
> 
> https://bugs.openjdk.java.net/browse/JDK-8220602
> 
> Or is this not related?
> 
> Also, what about sh/jdk11, does it already support region iteration?

No, I don't think they are related. Also, -F option seems depreciated in 
jdk11.


> 
> Other than that, the patch itself looks good, thanks!
> 

Thanks,

-Zhengyu

> Roman
> 
>> Please review this patch to support live region iteration, which should
>> fix jstack with "-F" option.
>>
>> However, with -F option, jstack takes *really* long time, but G1 has the
>> same issue.
>>
>>
>> Webrev:
>> http://cr.openjdk.java.net/~zgu/shenandoah/sa_liveregion/webrev.00/index.html
>>
>>
>> Thanks,
>>
>> -Zhengyu
>>
>