RFR (S): 7127700: G1: Replace G1PLAB with PLAB

[Thomas Schatzl]

Hi Kim, Stefan,

  thanks for your reviews.

On Tue, 2018-02-13 at 01:55 -0500, Kim Barrett wrote:
> > On Feb 12, 2018, at 10:21 AM, Stefan Johansson <stefan.johansson at or
> > acle.com> wrote:
> > 
> > Hi Thomas,
> > 
> > On 2018-02-12 10:30, Thomas Schatzl wrote:
> > > Hi all,
> > > 
> > >   can I have reviews for this small change that removes G1PLAB
> > > and uses the PLAB class throughout?
> > > 
> > > Although the CR indicates that the remaining _retired member of
> > > G1PLAB might be useful, I think the additional check it provides
> > > is not worth the effort, so I removed it.
> > > 
> > > CR:
> > > https://bugs.openjdk.java.net/browse/JDK-7127700
> > > Webrev:
> > > http://cr.openjdk.java.net/~tschatzl/7127700/webrev/
> > 
> > Looks good, just one thing. Please remove the virtual declarations
> > from PLAB in plab.hpp.

Done, see 
http://cr.openjdk.java.net/~tschatzl/7127700/webrev.1 (full)
http://cr.openjdk.java.net/~tschatzl/7127700/webrev/.0_to_1
(diff)

webrevs.

Thanks,
  Thomas