RFR(T): 8234274 [BACKOUT] JDK-8204128 NMT might report incorrect numbers for Compiler area

[Daniel D. Daugherty]

No problem. Please confirm you are good with the backout.

Leonid says he can help with testing the [REDO]. I'll morph
https://bugs.openjdk.java.net/browse/JDK-8234270 into the REDO bug in a 
minute.

Dan

On 11/15/19 9:10 PM, Zhengyu Gu wrote:
> Thanks, Dan.
>
> -Zhengyu
>
> On 11/15/19 9:08 PM, Daniel D. Daugherty wrote:
>> Greetings,
>>
>> The following fix needs to be backed out:
>>
>>      JDK-8204128 NMT might report incorrect numbers for Compiler area
>>      https://bugs.openjdk.java.net/browse/JDK-8204128
>>
>> The fix is causing failures in the stress tiers of the JDK14 CI. Please
>> see the info added to the following bug by Leonid:
>>
>>      JDK-8234270 HugeArenaTracking.java failed assert(_size >= sz) 
>> failed: deallocation > allocated
>>      https://bugs.openjdk.java.net/browse/JDK-8234270
>>
>> To keep the noise in the CI down over the weekend, I'm backing out the
>> fix using the following bug:
>>
>>      JDK-8234274 [BACKOUT] JDK-8204128 NMT might report incorrect 
>> numbers for Compiler area
>>      https://bugs.openjdk.java.net/browse/JDK-8234274
>>
>> I'm also backing out the following fix:
>>
>>      JDK-8234272 ProblemList runtime/NMT/HugeArenaTracking.java
>>
>> Doesn't make sense to ProblemList a test that has been deleted.
>>
>> Here's the webrev for the backout:
>>
>> http://cr.openjdk.java.net/~dcubed/8234274-webrev/0-for-jdk14/
>>
>> I have manually verified the backout against the changeset that precedes
>> the changeset for JDK-8204128.
>>
>> Thanks, in advance, for any comments, questions or suggestions.
>>
>> Dan
>>
>>
>>
>