Will threading works here? In signal handler, i will create a pthread with a function and parameter as pid and the sig_handler returns. The thread does it cleanup and gconf calls and closes safely. Will it block the server in any way? Is it safer to make calls from thread? Cheers, - Kaustubh (aka. Silverroots) [<a href="http://www.kaustubh.org">www.kaustubh.org</a>] <div class="gmail_quote">On Sat, Feb 14, 2009 at 3:05 AM, Thiago Macieira <<a href="mailto:thiago@kde.org">thiago@kde.org</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div><div></div><div class="Wj3C7c">Scott James Remnant wrote: >On Fri, 2009-02-13 at 15:50 +0000, Simon McVittie wrote: >> One of the few safe things to do is write the pid to a pipe (as in >> pipe(2)) and return; whenever a pid can be read from the other end of >> the pipe in your main loop, do your cleanup and D-Bus interactions >> there. > >Though note that if you spawn a large number of children, it is possible >for this pipe to be filled such that the signal handled blocks on >write() > >It's generally better to use pselect() or ppoll() and otherwise mask >SIGCHLD out from your process. </div></div>pselect wasn't available on Linux until very recently. You should make your pipe non-blocking. If it's full, the event loop is going to wake up anyways very soon now. --  Thiago Macieira  -  thiago (AT) <a href="http://macieira.info" target="_blank">macieira.info</a> - thiago (AT) <a href="http://kde.org" target="_blank">kde.org</a>    PGP/GPG: 0x6EF45358; fingerprint:    E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358 _______________________________________________ dbus mailing list <a href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/dbus" target="_blank">http://lists.freedesktop.org/mailman/listinfo/dbus</a> </blockquote></div>