[Python-3000] iostack and sock2
Greg Ewing
greg.ewing at canterbury.ac.nz
Tue Jun 6 02:26:17 CEST 2006
tomer filiba wrote:
> I wrote:
> > My current opinion on select-like functionality is
> > that you shouldn't need to import a module for it at
> > all. Rather, you should be able to attach a callback
> > directly to a stream. Then there just needs to be
> > a wait_for_something_to_happen() function somewhere
> > (perhaps with a timeout).
>
> yes, that's how i'd do it, but then how would you wait for
> multiple streams?
# somewhere in the program
stream1.on_readable = handle_stream1
# somewhere else
stream2.on_readable = handle_stream2
# and the main loop says
while program_is_running():
wait_for_streams()
The wait_for_streams function waits for activity on any
stream which has a callback, and calls it.
(BTW, I actually think this sort of functionality should
be part of the OS kernel, with event-driven programs and
libraries being so important nowadays. Sort of like being
able to define signal handlers for file descriptors instead
of having a small, fixed number of signals.)
--
Greg
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