RFR: JDK-8211270: GC abstraction to get real object and headers size

[Aleksey Shipilev]

On 10/09/2018 04:39 PM, Roman Kennke wrote:
> It seems that the PLAB stuff does indeed require a different kind of
> abstraction, and most likely something that can be shared with, e.g.,
> TLAB in the form of a virtual version of CollectedHeap::min_fill_size()
> or such. Let's take this part out of the patch:
> 
> http://cr.openjdk.java.net/~rkennke/JDK-8211270/webrev.01/

Yeah, this looks good to me.

-Aleksey

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