Re: Glib g_io_add_watch + AX25

[Joe Shaw <joeshaw novell com>]

Hi,

Andre Lohan wrote:
> g_io_add_watch(rx_io, G_IO_IN, rx_io_event, NULL);
>
> I end up with 100% CPU load when i add the channel and the callback 
> rx_io_event never gets called.
>
> i get loads of the following lines in short time with strace:
>
> ioctl(4, FIONREAD, [0])                 = 0
> poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN, revents=POLLHUP}], 2, 
> -1) = 1
>
> I've tried the same with an normal AF_INET socket and it dont "poll" so 
> often and no 100% CPU load.

The reason why you're getting 100% CPU usage is because the poll() call 
is getting HUP events, but your watch doesn't handle that event.  You 
need to add G_IO_HUP as well for your rx_io_event.  (Why you're getting 
HUP, I have no idea; I don't know anything about AX25 sockets.)

This is a question that would probably be better on gtk-app-devel-list, 
gtk-devel-list is for the development of glib and gtk itself.

Joe