Mac+newest JDK changes?

[Christian Thalinger]

Ehh, I think the wording was not very good.  What I meant is after some JDK changes are put back we will remove some unused code from the VM and that VM (which will be >= HS23) cannot be dropped into 7 GA or 7u2.  But of course it's possible to use this VM in >= 7u4.  I hope that makes it more clear.

The reason I posted this heads-up here is that there might be a timeframe in the future were people are building the latest VM from hotspot-comp and want to drop that into 7 GA.

-- Chris

On Oct 15, 2011, at 12:13 AM, Paul Hohensee wrote:

> Umm, "make it impossible to drop HS23 into JDK7"?
> That'd be a no-no. 
> 
> Paul
> 
> Sent from my iPhone
> 
> On Oct 14, 2011, at 6:33 AM, Christian Thalinger <christian.thalinger at oracle.com> wrote:
> 
>> 
>> On Oct 14, 2011, at 11:23 AM, Christian Thalinger wrote:
>> 
>>> 
>>> On Oct 14, 2011, at 9:43 AM, Ola Bini wrote:
>>> 
>>>> Hi,
>>>> 
>>>> I'm finally about to get back to hacking on Seph, specifically looking
>>>> at performance - I would really like to be able to run the latest
>>>> changes (things for u2 related to invoke dynamic) in MacOS X - what is
>>>> the current status of this, and is it even possible at the moment?
>>> 
>>> Daniel Dougherty is currently working on getting the Mac OS X changes into HS23 (the runtime repository to be precise).  This should happen soon and after that presumably you can build a HS23 VM and drop it into a Mac OS X JDK build (at least I hope that will work).
>> 
>> Yes it works.  What I just did:
>> 
>> 1. downloaded the preview from Remi's link (so I don't have to build the JDK myself)
>> 2. cloned the hotspot-rt repository
>> 3. built a 64-bit VM (because that's the default on my box; I think universal_debug is actually the right target)
>> 4. dropped the VM into the JDK preview
>> 
>> $ java -version
>> openjdk version "1.7.0-ea"
>> OpenJDK Runtime Environment (build 1.7.0-ea-b213)
>> OpenJDK 64-Bit Server VM (build 23.0-b02-internal-jvmg, mixed mode)
>> 
>> No errors with that build on the Seph testsuite.
>> 
>> And a heads-up:  soon we will push changes to HS23 that makes it impossible to drop HS23 into JDK 7.  I hope there will be a preview build of 8 soon.
>> 
>> -- Chris
>> 
>>> The BSD port changes were already integrated by Tom:
>>> 
>>> http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/f08d439fab8c
>>> 
>>> -- Chris
>>> 
>>>> 
>>>> Cheers
>>>> -- 
>>>> Ola Bini (http://olabini.com)
>>>> Ioke - JRuby - ThoughtWorks
>>>> 
>>>> "Yields falsehood when quined" yields falsehood when quined.
>>>> 
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