RFR: 8201800: Add support for adjusting heap addresses in a TLAB

[Stefan Karlsson]

Looks good to me.

StefanK

On 2018-04-18 16:05, Per Liden wrote:
> This patch adds support for iterating over and adjusting heap addresses 
> contained in TLABs. A user of this would be ZGC, which sometimes wants 
> to adjust the color of those pointers. This patch adds a new function, 
> ThreadLocalAllocBuffer::addresses_do(), which takes a function/functor 
> and applies that to all addresses in the TLAB.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8201800
> Webrev: http://cr.openjdk.java.net/~pliden/8201800/webrev.0
> 
> /Per