Emitting signals

Lennart Poettering mzqohf at 0pointer.de
Wed Jul 27 23:23:32 EST 2005

On Wed, 27.07.05 14:14, Ross Burton (ross at burtonini.com) wrote:

> On Wed, 2005-07-27 at 14:21 +0200, Lennart Poettering wrote:
> > > Yes, signals are broadcast to all clients.  I'd suggest either sending
> > > the signals and make the client filter the signals itself.  My app
> > > solves this by sending normal messages to the client, but I can do this
> > > as I've got a client library which handles the incoming messages and
> > > transforms them into GObject signals for the applications.
> > 
> > Isn't this a waste of resources? You're spamming all DBUS clients
> > with signals only one client might be interested in, arent' you? If
> > hundreds of clients are connected to the bus (which is easily
> > possible, since avahi uses the system bus), you'll wake up all clients
> > for nothing.
> Clients have to register a filter to receive signals, so you'll only
> send it to all Avahi clients.

This is bad enough, isn't it?

Are these filters processed on the client side or by the bus daemon?


Lennart Poettering; lennart [at] poettering [dot] de
ICQ# 11060553; GPG 0x1A015CC4; http://0pointer.de/lennart/

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