Thanks, that was the information i was looking for. Indeed i was able to solve the issue! Again, thank you very much,
Federico 2017-04-30 12:55 GMT+02:00 Lennart Poettering <lenn...@poettering.net>: > On Sat, 29.04.17 20:31, Federico Di Pierro (nierr...@gmail.com) wrote: > > > Hi! > > I'm struggling to understand if this can be done: suppose i start polling > > on sd_bus_get_fd() without any match; then, after some event happens, i > add > > a match on same bus. > > Will i receive events on my fd just going on polling? > > Ie: will this work? > > fd = sd_bus_get_fd(); > > event_happened = 0; > > poll(fd); > > if (event_happened) sd_bus_process(); > > else sd_bus_process(); sd_bus_add_match(); > > > > It seems it is not working, but i cannot understand if my idea is > > completely wrong or if something else is happening. > > I mean, fd is still the same obviously, i am only telling sd_bus that i'm > > now interested in certain messages, by hooking a callback; am i mistaken? > > I am not sure I follow what you are trying to say. > > But yes, you can add and remove matches on an existing connectio any > time, and you'll get events from the matches from the moment you > install it on until you remove it again (or the connection is > terminated). > > Lennart > > -- > Lennart Poettering, Red Hat >
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