Woohoo it will burn my brain :) -------------------------------------------------- From: "Daniel P. Berrange" <berrange@redhat.com> Sent: Friday, January 28, 2011 4:24 PM To: <arnaud.champion@devatom.fr> Cc: <libvir-list@redhat.com> Subject: Re: [libvirt] Raising events for testing
On Fri, Jan 28, 2011 at 04:17:21PM +0100, arnaud.champion@devatom.fr wrote:
I suffer with the new callback API :)
Does the new callback API need the EventRegisterImpl call ?
Yes, virEventRegisterImpl is required in order to be able to receive events.
Can anyone explain me the steps to install these callbacks ? I have a lot of difficulties to understand the polling process in the sample, does this polling is mandatory ?
Events can arrive at the client socket from libvirtd at any time. The poll() is used to watch for events arriving and ensure immediate dispatch. If we didn't do this no events would be seen until the next API call was made which is sub-optimal.
The file daemon/events.c shows a complete C implementation of the event callbacks.
The file examples/domain-events/events-python/domain-events.py shows a pure Python implementation
The C example program is a very *bad* demo of poll() so ignore that and look at daemon/events.c instead.
Daniel