AIX and OpenJDK

[John Yeary]

Hello All,

I like the idea of a port which eventually gets migrated into the main
line. I am using the BSD port with PPC. The build was done on an Apple G5
fully loaded. The Zero build I am using works, but the build alone took 3
days using another Zero build to bootstrap. My results may not be typical.
I tried using some of the tips/tricks/hints that Kelly O'Hair had published
to speed up the build, but it was still slow.

Dalibor suggested that I try using Shark. I have not had a chance to go
back, and try it. (A couple of days at a conference puts you seriously
behind an 8-ball).

YMMV,

John
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John Yeary
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On Tue, Jan 31, 2012 at 11:46 AM, Alan Bateman <Alan.Bateman at oracle.com>wrote:

> On 31/01/2012 10:49, Steve Poole wrote:
>
>>
>> hi all,
>>
>> Last year  there was a discussion [1] about adding AIX platform support
>> into OpenJDK. I'd like to pick up that conversation and complete this work.
>>
>> To recap  the salient points of the thread:
>>
>> 1: The scale of the changes to support  AIX without Hotspot are small  (
>> ~ 300 LOC)   There are  an additional 19 new files that cover  AIX
>>  specific build files and providing  necessary support for  AIX specific
>> filesystem, virtual machine  and  process attributes  in the same manner as
>> is already done for Linux, Solaris and Windows etc. Generally the changes
>> have been coded as capability based rather than platform focused. These
>> changes are easy to understand and help towards improving platform
>> portability.
>>
>> 2:  Generally AIX is very close to both Linux and Solaris. As you would
>> expect we will help ensure OpenJDK developers do not break things where
>> they do not have access to an AIX machine.
>>
>> 3: This work will faciliate the porting of  Hotspot to AIX  but IBM
>> intends to focus on our own JVM at this time (as you would imagine). We
>> will make a binary of the JVM available for OpenJDK developers  who want
>> early access on AIX of ongoing work in JDK8 and AIX.
>>
>> I said I would post more when all  the changes under item 2 above had
>> been posted.  That's  basically  now.  I'd like to pick up the conversation
>> again and resolve  how to get the remaining files into OpenJDK so it's
>> possible to  build and run JDK 8  on AIX.
>>
>>  I do not consider that the scale of these changes warrant a porting
>> project all of their own.  Does anyone have a reason why I shouldn't  just
>> start posting the additional files with the intention of getting them added
>> into the main JDK8 repos?
>>
>> Steve
>>
>>  Steve - in the thread that you cited then I was the one that suggested a
> porting project as a possible route. I still think this is the good
> approach as it would allow a complete port to be stabilized before going
> into the master. The Mac port will be moving into the mainline soon and is
> a good example (along the BSD project from where it started) that these
> projects can get into the mainline.
>
> From your mail then clearly the VM is the problem. I'm curious if you've
> looked at Zero? I don't have experience with it but it should simplify
> greatly the effort to get a VM going. Maybe folks with experience with Zero
> could jump in to give some indication of the effort required to build to a
> new architecture/OS. It may involve some work but it would mean that
> everything is built from source (as opposed to using a binary plug as you
> suggest).
>
> -Alan.
>
>