hi Lennart, On Fri, Apr 10, 2020 at 2:14 PM Lennart Poettering <lenn...@poettering.net> wrote: > > On Do, 09.04.20 14:12, David J (ema...@icloud.com) wrote: > > > Hello Systemd developers! > > > > > I asked this question earlier but I haven’t gotten any reply so I thought > > > asking again. > > > > > Question regarding sd_bus_add_match (sd-bus.c): > > > > > > Is there any bad consequences to use the same callback for > > > multiple signal match and then using the userdata parameter to > > > distinguish among the different signals? See the sample code below > > > for a reference of what I am trying to do. > > No sure why one would do that, but the userdata argument is something > you can use any way you like. Most people stick some context object > pointer in it, but it's entirely fine to place anything else there, > for example an enum that you cast to a pointer.
If I understand correctly David's question, he wants to know if he got triggered twice on the same event in a single client. I am also interested because it could be simple for some application to be triggered by two events instead than re-firing a message internally. > > Lennart > > -- > Lennart Poettering, Berlin > _______________________________________________ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/systemd-devel Thank you, Giacinto _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
