RFR: 8252505: C1/C2 compiler support for blackholes [v24]

[Volker Simonis]

I've just realized that apparently, after PR was closed, comments on
that PR are still forwarded to the corresponding mailing list thread
whereas answers on the mailing list thread are not appended to the PR
any more.

This means  that all the latest answers on the mailing list thread are
not part of the PR anymore and have to be added manually if somebody
thinks it is important.

I'm not sure if this is intended behaviour or a bug but as the
direction from "Closed PR" to "Mailling List  Thread" is still working
I'm inclined to call it a bug :)

I think I should open a bug for this issue.

On Tue, Dec 8, 2020 at 1:21 PM Andrew Haley <aph at redhat.com> wrote:
>
> On 08/12/2020 10:42, Thomas Wuerthinger wrote:
>
> >> I don't think the OpenJDK project has a responsibility to justify
> >> its implementation details to other projects which try to emulate
> >> its behaviour.
>
> > My understanding as a member of the OpenJDK community was that a
> > GitHub PR like this is the appropriate place to engage in
> > collaborative discussions. Let me know if this kind of engagement is
> > undesirable.
>
> I hope that Volker will forgive me if I've misinterpreted him, but I
> don't think that it's a matter of where this discussion occurs.
> OpenJDK has to be able to make its own decisions about its internal
> implementation details without regard to other projects which choose
> to emulate all of the behaviour of OpenJDK. I think he's right about
> this. We can't keep looking over our shoulders to see what projects
> who consume some of OpenJDK might be doing.
>
> On the other hand, I believe that blackhole is a useful thing to have
> beyond merely JMH. (For example, it may lead to a sane implementation
> of Reference.reachabilityFence(). That would be nice.)
>
> --
> Andrew Haley  (he/him)
> Java Platform Lead Engineer
> Red Hat UK Ltd. <https://www.redhat.com>
> https://keybase.io/andrewhaley
> EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
>