[14] RFR 8237396: JvmtiTagMap::weak_oops_do() should not trigger barriers

Zhengyu Gu zgu at redhat.com
Mon Jan 20 13:56:10 UTC 2020


Thanks, Roman.

-Zhengyu

On 1/20/20 8:43 AM, Roman Kennke wrote:
> Hi Zhengyu,
> 
> The change looks good to me. I was worried about other GCs, and Stefan
> has confirmed that it's ok there.
> 
> Thanks,
> Roman
> 
> 
>> Please review this small patch that avoids barriers in
>> JvmtiTagMap::weak_oops_do() method.
>>
>> The method is used by GC and GC expects to see raw oops.
>>
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8237396
>> Webrev: http://cr.openjdk.java.net/~zgu/JDK-8237396/webrev.00/
>>
>> Test:
>>    hotspot_gc
>>    vmTestbase_nsk_jvmti
>>    (fastdebug and release) on x86_64 Linux
>>
>>    Submit test in progress.
>>
>> Thanks,
>>
>> -Zhengyu
>>
> 



More information about the hotspot-gc-dev mailing list