Mailinglist Archive: zypp-devel (83 mails)

[Michael Andres <ma@xxxxxxx>]

On Fri, Jun 06, Lukas Ocilka wrote:

> Josef Reidinger wrote:
> > If everything work good this is not hard. In commit code it is separated, 
> > only we need instead providing file when needed, provide it to queue 
> > (producer and consumer) and install when queue is not empty. But if 
> > something happen what to do? Do we expect more then one failure (because 
> > download and install can both cause fail), also I am now sure if libzypp 
> > is prepared for multithread aplication. Also we must provide two progress, 
> > one for download and one for installation. Does YaST expect multithread 
> > libzypp? E.g. one callback is called and what happen if another is called 
> > and YaST still does work on first?

The callbacks will be serialized, so yast/zypper can process them one by
one. But each callback may be related to a different task, as there are
multiple tasks running at the same time.

> That sound like a very good deliberation about pros and cons of libzypp and 
> YaST capabilities for running in multiple threads.
>
> About answers to your questions: Franky, I don't know, but the important 
> part was to start a discussion :) I hope that both YaST and libzypp gurus 
> will join it.
>
> PS: If we use separate threads for downloading and installation, there 
> should be a limit on maximum of files / data size downloaded into queue 
> (cache size).

Yes. 

-- 

cu,
    Michael Andres

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