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From MICHAEL MCGRADY <mmcgr...@topiatechnology.com>
Subject Re: JVM version policy Was: Re: Build failed in Hudson: River-trunk-jdk1.5 #3
Date Thu, 02 Dec 2010 06:04:20 GMT
We do this now with Java 1.5, Greg.  Java RT 2.1 (64 bit) is compatible with Java 1.5.  http://preview.tinyurl.com/2bpjqfh
 There would be no other test than works-with-Java-1.5.  The simple answer is that if River
does not call real-time threads and uses Java 1.5 there is no issue.  There are other things
that impact real-time but we can cover those.

MG

On Dec 1, 2010, at 9:00 PM, Greg Trasuk wrote:

> 
> On Wed, 2010-12-01 at 23:33, Mike McGrady wrote:
>> Like I said, Java 1.6 is incompatible with Java RTS and that os very serious in my
neighborhood.  We do QoS with Java RTS.
>> 
> 
> That's certainly an interesting comment... I'm curious though: I haven't
> looked at RT Java for several years, but I recall that the first pass
> allowed plain Java (i.e. non-real-time) to be executed.  Would River
> components need some other evaluation or testing to be accepted as
> "real-time" (which I doubt would be an easy task), or would you just be
> looking for compatibility with the run-time environment, but without
> real-time guarantees?
> 
> Also, what would be the impact if the RT system called services that
> were resident in a non-RT virtual machine?  Specifically, would the
> registrar and/or JavaSpaces implementation need to be hosted in a Java
> RTS virtual machine?
> 
> Cheers,
> 
> Greg.
> 
> 
> Sent from my iPhone
>> 
>> Michael McGrady
>> Principal investigator AF081_028 SBIR
>> Chief Architect
>> Topia Technology, Inc
>> Work 1.253.572.9712
>> Cel 1.253.720.3365
>> 
>> On Dec 1, 2010, at 5:03 PM, Patricia Shanahan <pats@acm.org> wrote:
>> 
>>> On 12/1/2010 4:53 PM, Dennis Reedy wrote:
>>> ...
>>>> Some of the discussion has referenced Java CDC on BlueRay. Should
>>>> these platforms have an overriding influence on whether River moves
>>>> forward and adopts 1.6 as a baseline? I'm not so sure at this point.
>>> 
>>> Is the relevant Java dialect identical to 1.4? If not, we would need a separate
project to make portions of River run on it.
>>> 
>>> Patricia
> -- 
> Greg Trasuk, President
> StratusCom Manufacturing Systems Inc. - We use information technology to
> solve business problems on your plant floor.
> http://stratuscom.com
> 

Michael McGrady
Chief Architect
Topia Technology, Inc.
Cel 1.253.720.3365
Work 1.253.572.9712 extension 2037
mmcgrady@topiatechnology.com


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