RFR(XXS) 8187629: NMT: Memory miscounting in compiler (C2)

[Zhengyu Gu]

Thanks a lot, Chris.

-Zhengyu

On 09/25/2017 12:56 PM, Chris Plummer wrote:
> Yes, I'll push it today.
> 
> thanks,
> 
> Chris
> 
> On 9/25/17 9:00 AM, Zhengyu Gu wrote:
>> Hi Chris,
>>
>> Could you please sponsor this change?
>>
>> Attached patch has been rebased to new repo.
>>
>> Thank you in advance!
>>
>> -Zhengyu
>>
>> On 09/19/2017 11:27 AM, Chris Plummer wrote:
>>> Looks good. Seems to follow a pattern used elsewhere.
>>>
>>> thanks,
>>>
>>> Chris
>>>
>>> On 9/18/17 12:17 PM, Zhengyu Gu wrote:
>>>> Compiler (C2) uses ResourceArea instead of Arena in some 
>>>> circumstances, so it can take advantage of ResourceMark. However, 
>>>> ResourceArea is tagged as mtThread, that results those memory is 
>>>> miscounted by NMT
>>>>
>>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8187629
>>>> Webrev: http://cr.openjdk.java.net/~zgu/8187629/webrev.00/
>>>>
>>>>
>>>> Test:
>>>>
>>>>   hotspot_tier1 (fastdebug and release) on Linux x64
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> -Zhengyu
>>>
>>>
>>>
> 
>