Threads, signals and sockets (on UNIX)

Jean-Paul Calderone exarkun at
Mon Jun 11 14:08:55 CEST 2007

On Mon, 11 Jun 2007 04:56:43 -0700, geoffbache <geoff.bache at> wrote:
>> Twisted *should* be able to do this, as it uses non-blocking IO.
>Thanks for the tip. I'll take a look if nobody has any better

Twisted is a pretty good suggestion in general. ;)

>It still seems to me that what I'm trying to do is essentially quite
>simple, and shouldn't require
>as large a tool as Twisted to fix it. Isn't Twisted basically for web

Twisted supports HTTP, but it does plenty of other things too.  Generally
speaking, it's useful for any network application, plus some other stuff.

You're half right about this being simple though, and not needing Twisted
to solve the problem.  The only thing you need to do to solve the problem
is avoid using either signals or threads.  Interaction between the two is
very complicated and, as you've noticed, varies across platforms.  Twisted
is solving the problem for you here by letting you do I/O without using
threads, making signals *almost* simple.


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