Re: [PATCH spice-gtk 06/13] migration: set connecting state before fd request

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On Thu, Nov 13, 2014 at 6:38 PM, Christophe Fergeau <cfergeau@xxxxxxxxxx> wrote:
Hey,

On Thu, Nov 13, 2014 at 05:41:20PM +0100, Marc-André Lureau wrote:
> On Thu, Nov 13, 2014 at 10:07 AM, Christophe Fergeau <cfergeau@xxxxxxxxxx>
> wrote:
>
> > Ah, this is the bit I was missing thanks! The commit log needs to be
> > much more detailed and accurate, and mention explicitly the various code
> > paths involved to trigger the error, where the looping occurs, ...
> >
>
> What about?
>
> migration: set connecting state before fd request
>
> During migration, the main channel initiating the process is waiting on
> connection completion of all channels in migrate_channel_event_cb()

before yielding back to the main context.

Not sure what you mean, the main channel context is "waiting", meaning it waits until it is yields back from migrate_channel_event_cb() when all channels are connected.

> or
> it will abort migration for unexpected channel events, such as
> SPICE_CHANNEL_CLOSED.

s/or it will/It will//

"is waiting on connection completion of all channels... or it will", I think this is correct as it's an alternative path if the completion isn't met.


>
> If the migration is cancelled before connection completes, but the
> channels state are still SPICE_CHANNEL_STATE_UNCONNECTED,

but the channells are still in the SPICE_CHANNEL_STATE_UNCONNECTED state

ok


> no events will
> be emitted in channel_disconnect(), and the source session main channel
> will remain frozen waiting for migration completion or failure.
>
> Currently, for client-fd channels, the channel state remains UNCONNECTED
> until the fd is provided. But if cancellation occurs, no channel events are
> emitted and the source session is stuck.
>
> Before requesting the fd, set the channel state to connecting, so
> it
>
> will emit an error if disconnect happens, and it will finish cancelling
> the migration in source session main channel.

Extra line breaks in the middle of the paragraph it seems.

I use emacs default fill-paragraph, it may not match the mailer but it looks correct ~70 character per line.
 

Christophe

>
>
>
> --
> Marc-André Lureau

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--
Marc-André Lureau
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