[Python-Dev] Signals, threads, blocking C functions

Jean-Paul Calderone exarkun at divmod.com
Mon Sep 4 18:46:22 CEST 2006

On Mon, 04 Sep 2006 17:24:56 +0100, David Hopwood <david.nospam.hopwood at blueyonder.co.uk> wrote:
>Jean-Paul Calderone wrote:
>> PyGTK would presumably implement its pending call callback by writing a
>> byte to a pipe which it is also passing to poll().
>But doing that in a signal handler context invokes undefined behaviour
>according to POSIX.

write(2) is explicitly listed as async-signal safe in IEEE Std 1003.1, 2004.
Was this changed in a later edition?  Otherwise, I don't understand what you
mean by this.


More information about the Python-Dev mailing list