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

[Zhengyu Gu]

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
> 
> 
> 
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