HotSpot 14

[Andrew John Hughes]

2009/5/15 Erik Trimble <Erik.Trimble at sun.com>:
> Andrew John Hughes wrote:
>>
>> Hi all (especially Joe),
>>
>> Now that the HotSpot Express repositories are available, what is the
>> plan for including hs14 in OpenJDK6?
>>
>> I did a pull of the base changeset from HS express (0) into OpenJDK6's
>> hotspot repo. yesterday as a test, and it seems to apply fairly well.
>> The conflicts all seem to be whitespace changes (though there's a lot
>> of them -- ~210 files are affected).
>>
>> Do we still plan to maintain a version of HotSpot in OpenJDK6 or will
>> HS Express just be used directly?
>>
>> Thanks,
>>
>
> Frankly, I think this is up to the Community.
>
> I'm still not 100% sure of the complete list of who has write access to the
> OpenJDK6 stuff, but I /think/ the proper way to do this is not move any HSX
> release into the main OpenJDK6 forest until there is  consensus that It's
> Time.
>

The list is here: http://db.openjdk.java.net/people for your
delectation and delight.

> Now, that said, maybe It's Time Right Now.
>

IcedTea (i.e. the version of OpenJDK6 people are actually using on
their distros today) has already been shipping HotSpot 14 for some
time.  So I think not only is the time right for OpenJDK6 upstream to
also upgrade, but that it's perhaps long overdue.

>
> Given that the HSX repos are going to be almost exclusively Sun-only
> writable (in practice, not necessarily by design), I think that the VM in
> OpenJDK6 should be pulled from an HSX repo, and then have various
> community-desired patches applied there, rather than try to work directly on
> an HSX repo.  That is, I expect the various HSX repos to be a reflection of
> what Sun is doing, and the VM in OpenJDK6 should be a reflection of what the
> Community chooses to do with the HSX work from Sun.
>

My preference would be for patches to go into HotSpot Express and then
OpenJDK6 just pull a stable version regularly.  I've already had
patches committed to HotSpot as have others working on IcedTea, so I
don't see an issue there.

> As such, going forward, I _hope_ there is less and less of a requirement to
> maintain IceTea, and that everything there can get moved over into the
> appropriate OpenJDK repo.  Not that I have anything against IceTea, it just
> would be nice to cut down on the amount of work needed to maintain all these
> separate codebases.
>

We agree.  Most of IcedTea is there by necessity, not design. See
http://icedtea.classpath.org/wiki/IcedTea_JDK6_Patches for our
progress on getting everything upstream where we can.

> --
> Erik Trimble
> Java System Support
> Mailstop:  usca22-123
> Phone:  x17195
> Santa Clara, CA
> Timezone: US/Pacific (GMT-0800)
>
>



-- 
Andrew :-)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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