RFR (S): CR 8004318/JEP 171 Fences intrinsics

[Doug Lea]

[I should have actually subscribed to this list too,
so as to not lose out when people dropped CC. I am now.
Too many lists!]

But ...

David Chase wrote:

> I'm on the (ahem) fence here.  I don't feel like ticking off Doug, deadlines
> are approaching, and I don't think this is the only wart in the Unsafe layer.
> On the other hand, how hard could it be to stuff it all in some other class
> of sun.misc?

FWIW, my "what's best for openjdk" judgement is that it is
best to keep the pressure on for a total overhaul effort for
JDK9: For example, a package jvm.* developed with
consensus with others VM folks, a JMM-like full spec effort for
memory model related stuff. A indy/mh-based solution
to the awfulness of using offset args. And so on.
So the little bandaid of moving these three methods
could be counter-productive -- allowing more muddling
along for more releases.

But really, at this point, I'd take anything.

-Doug