Re: socket calls in signal handler (WAS: APC + socket restrictions un der Win32?)

On Mon, Mar 08, 2004 at 09:12:52PM +1100, Claudio Natoli wrote:
> 
> Hi all,
> 
> Was just discussing the issues related to the above off list with Magnus:
> http://archives.postgresql.org/pgsql-hackers-win32/2004-03/msg00041.php
> 
> Whilst we can think of a number of work-arounds (the simplest being a
> suggestion by Magnus: set a flag, like APCcalled, to false before the
> select() call, and repeat the select() if APCcalled == true on return from
> select), we were wondering if having socket calls inside signal handlers was
> a good idea in any case?

Is this a win32 only thing, or is it more general?

OpenBSD for instance has some documentation on which functions
are safe to be called from a signal handler, and socket
operations aren't part of it.  See for isntance their manpages
about signal and sigaction.


Kurt