Frank Reininghaus frank78ac at googlemail.com
Thu Jun 20 09:50:47 BST 2013


2013/6/19 Thomas L├╝bking:
> On Mittwoch, 19. Juni 2013 20:21:41 CEST, Sune Vuorela wrote:
>> On 2013-06-17, Frank Reininghaus <frank78ac at googlemail.com> wrote:
>>> Yes, it can block for random reasons, and this is why making D-Bus
>>> calls in the code that is executed before the context menu is shown is
>>> unacceptable IMHO.
>> I agree with the problem. But the issue is to *fix* kactivities to not
>> do something insane.
> Fixing kactivitiesd to not hang is orthogonal to Franks problem.
> Of course it should be fixed if broken anyway, but: everytime you perform a
> sync dbus call or other I/O, you block the GUI. This can cause issues on
> your side (your problem), the bus (bus problem? system loaded?), or the
> other side (not responding, also holds for network or HDD)
> The problem is that dbus is increasingly not seen as I/O but as funny API
> since, luckily, Qt makes its usage so simple.
> You would never consider to download some video from youtube whenever the
> user attempts to open a popup, but it's the same problem.
>> If I was a plugin developer here, I would of course think my plugin
>> should be enabled by default and thus in my ctor call
>> setEnabledByDefault(true)
> I would suggest to leave the path of plugin enabling as solution asap - it's
> not a solution at all.
> The plugin can initially work fine and great. And then, after a month or so,
> you get a "k-ac-ti-what?" update - alongside a dozen others - and suddenly
> it breaks.
> Joe User does not think:
> "Oh, yes. This is the activities plugin that blocks on popup opening as it
> makes a synchronous dbus call to kactivitiesd - let's ping the kactivitiesd
> process and see if it's hung. No? Wait: may still be dbus itself, can i
> qdbus?"
> Joe User thinks:
> "Crappy dolphin does not react and now i cannot hide my fapfolder before my
> girlfriend returns. I'm screwed AND IT'S ALL FRANKS FAULT!!!" and then
> reports a bug that will not be fixed - esp. not in time.
> His GF finds his fapfolder, the relation breaks apart and she even deleted
> the folder "AND IT'S ALL FRANKS FAULT!!!!"
> And there's Franks problem.

thank you Thomas, I greatly appreciate that you explained the problem!
I guess there are not many people who know what it feels like if
something that you cannot control makes your application look really,
really bad.

Thanks and best regards,

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