Hans Meine wrote:
> On Montag 20 Oktober 2008, Dirk Meyer wrote:
>> Hans Meine wrote:
>> > One thing that does not yet work is stopping the program; I need to kill
>> > python with -9. :-(( Hope that you can fix that.
>>
>> I had the same problem with twisted. I have no idea what happens when
>> you C-c a QT app (my non-kaa qt test app wouldn't die either).
>
> I think that is because the other thread is still active. It reminds me of a
> problem I had in the past, which I fixed by exec()uting another program not
> in the thread used to deal with its I/O, but from the main thread (and then
> still reading its stdout from within the thread). Does that ring a bell?
> How can I check whether the kaa thread properly stops? (I know that
> kaa.main.stop() is called.)
Twisted has an event triggered at shutdown. The Twisted based threaded
notifier connects to that signal and shuts the kaa loop down:
| reactor.addSystemEventTrigger('after', 'shutdown', self.stop)
So just call the stop function and it should work.
>> But to prove my point look at your code and my requirements: I want a
>> function to call from a thread to execute a callback in the
>> mainloop. That isn't too hard and IMHO can happen very often. In
>> twisted it took me five minutes to find callFromThread. Look again at
>> your example code [...]
>
> Yes, I realized already that I needed a much more complicated solution than
> with twisted. But IMO that's just because of different APIs, and "execute a
> callback in the [main thread's] mainloop" is not a very typical requirement
> (maybe more so in a python environment, but not in C++).
IMHO it has nothing to do with the language. If you have a main loop
based app you may be forced to use a thread somehow. If the lib is
thread safe this doesn't matter, if it is not, such a function must be
provided. E.g. gobject is thread-safe. It has no such function but I can
register a timer from a thread and just add my callback as timer to be
called in 0 seconds. That timer will be called from the mainloop.
Dischi
--
If windows is the answer, it must have been a stupid question.
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