[pypy-dev] System calls in Java

[Carl Friedrich Bolz]

Niko Matsakis wrote:
> So, there are a few system calls that I don't think Java supports, but  
> Python does.  So far I have found getpid() and setenv(), but probably  
> I will run into a few more.  Rather than implement the native wrappers  
> required myself, I was considering linking against a pre-written  
> library.  I found two, jnios, used by Jython, and jtux, which seems a  
> bit more general.  The Jython wrapper is a bit problematic because it  
> relies on a lot of Jython classes for building tuples and things.  I  
> haven't experimented with jtux yet, but it seems to be a  
> straightforward wrapper.  The biggest problem is that it does not have  
> lots of easy-to-download-and-install jar files available for various  
> platforms.
> 
> 	http://basepath.com/aup/jtux/
> 
> The idea would be that if the library were not present on the  
> CLASSPATH, everything would continue to work except those methods that  
> require extra support.
> 
> Does this make sense?  Anybody have a better idea?

This makes sense to me, for such low-level functions as getpid and 
setenv and whatever else is missing from the os module. For things like 
the socket module I guess it would make more sense to use some 
high-level java api that is more readily available.

Keep up the good work!

Cheers,

Carl Friedrich