Re: Real Time Drawing

[John Coppens <john jcoppens com>]

On Mon, 14 Mar 2005 12:48:04 -0500
"Liam R. E. Quin" <liam holoweb net> wrote:

> On Mon, 2005-03-14 at 17:18 +0000, Athanasios Anastasiou wrote:
>
> > There are two threads of execution, one is handling reading and
> > decoding of the incoming stream of data and the other is handling
> > processing.
>
> Multi-threaded applications sometimes get into trouble if more than one
> thread is trying to communicate with the X server at the same time.
>
> An alternate architecture (I don't know how easy it is for you to
> contemplate the change, though, of course) is to use gtk_add_input
> (or whatever it's called) to get a callback whenever there's data
> available on the serial port, and use only a single thread.  But if
> you do a lot of processing, separate threads can be a win, especially
> on a multi-CPU system :-)

Those are probably iochannels you're looking for. g_io_add_watch and
friends are documented in the glib reference manual... I've used them
several times, and this solution is by far simpler than threads, and I've
never lost data...

John