RFR: 8243486: ZGC: Adjust "Allocated" statistics to take undone page allocations into account

[Per Liden]

Thanks Stefan!

/Per

On 4/23/20 5:21 PM, Stefan Karlsson wrote:
> Looks good.
> 
> StefanK
> 
> On 2020-04-23 16:37, Per Liden wrote:
>> The "Allocated" statistics logged under gc+heap today includes page 
>> allocations that were later undone. Undoing page allocations is a 
>> fairly rare event, but this can still be a bit confusing to see. I 
>> propose that we adjust "Allocated" to take undone allocations into 
>> account.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8243486
>> Webrev: http://cr.openjdk.java.net/~pliden/8243486/webrev.0
>>
>> /Per