Advice wanted: asynch I/O on unix

Laurent Szyster laurent.szyster at q-survey.be
Tue Jul 24 15:03:26 CEST 2001


"Russell E. Owen" wrote:
> 
> I have a unix C library that reads some parallel port cards
> (asynchronously), processes the data and writes it files. I want
> to be able to call it from Python and would love some advice.
>
> (...)
>
> It would be nicest to end up with as little C code as possible (i.e.
> move most of this functionality into Python). Some of the processing
> would be better done in Python, and it's so much easier to debug and
> modify things in Python.
> 
> I think I can rewrite most or all of this directly in Python, but surely
> I can do better than simply replicate this code? It looks awfully
> complex. Is there A Better Way?

Have a look at Medusa sources. It's an asynchronous server that uses
the OS select() interface to do multiplexing. Maybe the same technique
can be used for serial devices on UNIX.

	http://www.nightmare.com/medusa

Let me know ;-)


Laurent Szyster



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