RFR (S): 8204082: Add indication that this is the "Last Young GC before Mixed" to logs

[Thomas Schatzl]

Hi all,

On Fri, 2018-06-08 at 10:52 +0200, Thomas Schatzl wrote:
> Hi Stefan,
> 
> [...]
> > 
> > Another possible solution, not sure it's better would be to an
> > extra
> > tag  to all Young GCs, something like:
> > Pause Young (Initial Mark) ...
> > Pause Young (Normal) ...
> > Pause Young (Finished Mark) ...
> > Pause Young (Mixed) ...
> > 
> > But I guess it's a bit harsh to call the Mixed GCs Young =)
> 
> The more I look at it the more I like this variant.

  I created a prototype of this last variant, webrevs available at:

http://cr.openjdk.java.net/~tschatzl/8204084/webrev.0_to_1 (diff)
http://cr.openjdk.java.net/~tschatzl/8204084/webrev.1 (full)

Ran through hs-tier1-4

Note that these changes required a bit more fixes in the tests that
nicely cover all these messages.

Thanks,
  Thomas