AW: Notifying a user space application
From: Graf Alex <hidden>
Date: 2004-07-01 05:45:47
Hello Christian Please have a look to the newsqroup archive! A good idea is to make a character device with a blocking read function.
From User Space then you open the device. If the interrupt occours, release
the read. Cheers Alex -----Ursprüngliche Nachricht----- Von: Christian Tröster [mailto:please.see.sig@gmx.de] Gesendet: Donnerstag, 1. Juli 2004 00:29 An: linuxppc-embedded@lists.linuxppc.org Betreff: Notifying a user space application Hi! I'd like to notify a user space application if an interrupt occurs. I had no problems to install a custom signal handler but I am not sure what's the best way to notify the application. My first idea was to send a signal to the application. But as far as I know one has to know the pid to send the signal. So I'd need some mechanism to get this pid - perhaps via a /proc entry. Is this a clean solution? Another idea was to create a (blocking) character device and have the application listening on that using select() or something like that. But this seems to be a little bit bloated just for one signal. :) Are there any other better ways I am not yet aware of. What do you think? Bye, Christian - -- | Mail: c dot troester at gmx dot de | PGP-Id: FA006C74 | ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/