[libvirt] Raising events for testing

[arnaud.champion at devatom.fr]

Okay, I'm trying to understand the Python implentation (I'm not a python 
expert but it seems to be quite readable once you've understand why there is 
"self" everywhere :) ).
The thing I'm not able to understand is the call to the "poll" function as 
this function doesn't exists in C# in any library at my knows... I'm not 
fluent with this. Anyone can expliain what poll do ?

Regards

Arnaud

--------------------------------------------------
From: <arnaud.champion at devatom.fr>
Sent: Friday, January 28, 2011 4:53 PM
To: "Daniel P. Berrange" <berrange at redhat.com>
Cc: <libvir-list at redhat.com>
Subject: Re: [libvirt] Raising events for testing

> Woohoo it will burn my brain :)
>
> --------------------------------------------------
> From: "Daniel P. Berrange" <berrange at redhat.com>
> Sent: Friday, January 28, 2011 4:24 PM
> To: <arnaud.champion at devatom.fr>
> Cc: <libvir-list at redhat.com>
> Subject: Re: [libvirt] Raising events for testing
>
>> On Fri, Jan 28, 2011 at 04:17:21PM +0100, arnaud.champion at 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
>>
>
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