On Fri, 08.08.08 16:40, Nathan Huesken ([EMAIL PROTECTED]) wrote: > > > You have several options that are far more elegant: > > > > 1) Implement the AvahiPoll structure for your existing event loop, > > i.e. implement the seven functions defined here: > > > > http://avahi.org/download/doxygen/struct_avahi_poll.html > > > > Then, pass this struct to avahi_client_new() and the avahi client > > will call those functions whenever there is a new FD or timeout to > > sleep on. You should then add a new item to your "struct pollfd" > > array (in case you uses poll()) or fd_set (in case you use > > select()) everytime the watch_new() function you implemented is > > called by the avahi client libraries, and similarly for the other > > six functions you'd need to implement. > > Sound good! I have a question to this methode: > Avahi also tells me what events to wait for, these are. > POLLIN > POLLOUT > POLLERR > POLLHUP > So exactly the events "poll" deals with. > For compatibility reasons I do not want to use poll but select. > So, I put all the POLLOUT event sockets in the "writefds" and all the others > in the "readfds". > Select should return on connection closed or connection error for > any socket in the "readfds", correct?
POLLHUP is different from both POLLIN/POLLOUT. I.e. you can have a socket around, sleep on it for neither r nor w, but be notified when it terminates. You cannot do this with select(). However, the Avahi client doesn't rely on this. You can ignore SIGHUP completely. POLLPRI should map to exceptfd. POLLHUP is difficult to emulate. You might be able to do it with recv and PEEKMSG, but as mentioned you don't really need tot do thus. There are several implementations of poll() on top of select() available. This one for example even works on Win32: http://git.0pointer.de/?p=pulseaudio.git;a=blob;f=src/pulsecore/poll.c;h=88ac21e46f1eeb6982abfc848a59031f01f6e579;hb=HEAD You might want to integrate a few ideas from this code into yours. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net ICQ# 11060553 http://0pointer.net/lennart/ GnuPG 0x1A015CC4 _______________________________________________ avahi mailing list avahi@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/avahi
