[Python-ideas] asyncore: included batteries don't fit

Ben Darnell ben at bendarnell.com
Tue Oct 9 08:53:11 CEST 2012

On Mon, Oct 8, 2012 at 10:56 PM, Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:
> Mark Adam wrote:
>> 1) event handlers for the machine-program interface (ex. network I/O)
>> 2) event handlers for the program-user interface (ex. mouse I/O)
>> While similar, my gut tell me they have to be handled in completely
>> different way in order to preserve order (i.e. sanity).
> They can't be *completely* different, because deep down there
> has to be a single event loop that can handle all kinds of
> asynchronous events.

There doesn't *have* to be - you could run a network event loop in one
thread and a GUI event loop in another and pass control back and forth
via methods like IOLoop.add_callback or Reactor.callFromThread.
However, Twisted has Reactor implementations that are integrated with
several different GUI toolkit's event loops, and while I haven't
worked with such a beast my gut instinct is that in most cases a
single shared event loop is the way to go.


> Upper layers can provide different APIs for them, but there
> has to be some commonality in the lowest layers.
> --
> Greg
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