Re: Two questions for help

> Hi, thanks for your help.
> 
> Actually I have already read the paper "Early Experience with an
> Implementation of Java on RTLinux", which mentioned that there are
> mainly two ways to run a Java program on RTLinux platform.
> 
> The first is to program the hard real-time part of the application in
> C/C++, which is executed by RTLinux, and program the soft real-time
> part in Java, which is executed by Linux. These two parts communicate
> with each other mainly through RTLinux FIFOs or shared memory.
>  
> The second approach is to port a Java Virtual Machine to the RTLinux
> environment, which is the focus of that paper.
> 
> Now I want to know more information about the first approach. Do you
> know where I can find it.....? Totally have no idea about it.
>
Well I would say the first approach you are mentioning is simply the
default method for RTLinux programs - splitt it along the hard/soft
realtime criteria - put the hardrealtime part in C modules and with
the soft-realtime you can basically do anything. For the specifics of
putting soft-realtime into java I'm a bit supprised that this should
be particularly suited for even soft-realtime, atleast normal java - 
there are some RTJave (The NIST published a requirement for a Real-time
Java platfrom), and there are a few implementations of such extensions
you can find on the net - but I realy know of no particular reason why
Java should be suited for softrealtime systems in any way.

hofrat
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