On Mon, Feb 09, 2009 at 11:02:58AM +0000, Daniel P. Berrange wrote:
On Sat, Feb 07, 2009 at 06:05:51PM +0100, Guido G?nther wrote:
> The problem is that we're using this function for two purposes: To read
> from a logfile where poll()'ing on POLLIN always returns "data
readable"
> which leaves us spinning (and EOF might get in our way) and also using
> it on the monitor PTY itself where it works as expected. Why not simply
> introduce qemudReadLogOutput? This at least allows us to usleep while
> waiting for the log file to fill up with data. I couldn't make libvirtd
> spin with this patch anymore. O.k. to apply?
Committed now.
Ah of course, I forgot poll() isn't particularly useful on
regular
files. For a non-spinning version we'd need to integrate with inotify
to monitor changes. ACK to your proposed patch for now.
I didn't use inotify
since it's not portable. It might make sense to add
an alternative linux only implementation though.
-- Guido