Add javax.* packages

[Philippe Laporte]

Hi,
     well it is not real real-time -:), but rather, the threads are
scheduled within the real-time scheduling class of Linux, which is soft
realtime.

I don't know when it will be merged in with the OpenVM version, although
this has been announced, so it should be in the near future.

In the mean-time I can send anyone the few files needed for soft
real-time on linux.

I do not have performance benchmarks yet, but I did get a significant
improvemnt on a single benchmark I use which I find to strain the mem
alloc, gc and string manipulation apsects of java performance.

Our ultimate goat at TVT is to have pocketlinux run under pthreads
real-time.

Regards,

--
Philippe Laporte
Optimization Engineer                 Tel:     (510) 527-4025 ext 14
Transvirtual Technologies, Inc.,      Fax:     (510) 559-3287
Berkeley, CA, USA.                    Email:   philippe at transvirtual.com



Erik Hu wrote:

> Hi Philippe Based on RTSJ (www.rtj.org) proposal, I have recently
> modified Kaffe for real-time applications. The previous implementation
> has created a javax.realtime package and modified the Kaffe VM for
> real-time purpose (jthread) under Linux. The modification of Kaffe VM
> includes the priority inheritance protocol, management of
> RealtimeThread and PeriodicThread, and other modifications. In fact,
> the previous version was missing the memory modifications and some
> other classes of the RTSJ specification. I also simplified the
> creation of javax.realtime package into Klasses.jar (Klasses.jar =
> java.lang.* + javax.realtime.*). Now, Cris is going to complete some
> lacking parts of my previous implementation and separate the
> javax.realtime package from Klasses.jar. Could you please tell us your
> current achievement of pthreads porting for Real-time applications ?
> When will the ptherad real-time of Kaffe be merged into traditional
> Open Kaffe VM ? Regards,Erik
>
>      ----- Original Message -----
>      From:Philippe Laporte
>      To: kaffe at rufus.w3.org
>      Sent: Monday, November 20, 2000 4:39 PM
>      Subject: Re: Add javax.* packages
>       Hi,
>           I am very interested in this project. Can you share
>      what modifications you made, and what are your goals?
>
>      I have recently done the pthreads soft real-time port of
>      Kaffe under linux.
>
>      Thank you,
>
>      --
>      Philippe Laporte
>      Optimization Engineer                 Tel:     (510) 527-4025 ext 14
>      Transvirtual Technologies, Inc.,      Fax:     (510) 559-3287
>      Berkeley, CA, USA.                    Email:   philippe at transvirtual.com
>
>
>

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