Hi,
I am having a rather similar problem with my code (Stackless Python
2.6.1 on OSX).
My app (pyglet + stackless python) breaks with the same exception straight away.
If I run it on 2.5.2 version of Stackless Python the problem does not
appear, even after
several hours of running.
The exception looks like this:
Traceback (most recent call last):
File "./proco.py", line 68, in <module>
pyglet.app.run()
File "build/bdist.macosx-10.3-i386/egg/pyglet/app/__init__.py", line
264, in run
File "build/bdist.macosx-10.3-i386/egg/pyglet/app/carbon.py", line 84, in run
File "build/bdist.macosx-10.3-i386/egg/pyglet/app/carbon.py", line
133, in _timer_proc
File "build/bdist.macosx-10.3-i386/egg/pyglet/app/__init__.py", line
187, in idle
File "build/bdist.macosx-10.3-i386/egg/pyglet/clock.py", line 696, in tick
File "build/bdist.macosx-10.3-i386/egg/pyglet/clock.py", line 303, in tick
File "./proco.py", line 44, in update
self.broadcast.send(dt)
File "/Users/alex/src/python/antfarm/engine/system.py", line 18, in send
result = stackless.channel.send(self, value)
RuntimeError: maximum recursion depth exceeded while calling a Python object
As seen, the code uses BroadcastChannel idiom.
-alex.
On Tue, Feb 3, 2009 at 9:49 AM, Kristján Valur Jónsson
<[email protected]> wrote:
> Stackless does stack copying if it senses that the C stack has grown to deep.
> But it still tries to maintain the recursion depth limit set in "sys".
> There is probably a bug somewhere in the bookkeeping of this.
> I'll try trawling through the code for the corresponding stuff If I find the
> time today.
> K
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Andrew Francis
> Sent: 2. febrúar 2009 22:48
> To: [email protected]
> Cc: [email protected]
> Subject: [Stackless] Maximum Recursion Depth Error with Twisted 8.2/Stackless
> 2.6.1
>
> Hi Colleagues:
>
> I recently updated to Stackless 2.6.1 and Twisted 8.2. I executed the
> following programme that works fine under Stackless 2.5.2 and Twisted
> (including 8.2) and I received the following error:
>
> traceback (most recent call last):
> File "ToyProcessor5.py", line 60, in twistedReactor
> reactor.run()
> File
> "/usr/local/lib/python2.6/site-packages/twisted/internet/base.py"
> , line 1048, in run
> self.mainLoop()
> --- <exception caught here> ---
> File
> "/usr/local/lib/python2.6/site-packages/twisted/internet/base.py"
> , line 1057, in mainLoop
> self.runUntilCurrent()
> File
> "/usr/local/lib/python2.6/site-packages/twisted/internet/base.py"
> , line 707, in runUntilCurrent
> log.deferr()
> File "/usr/local/lib/python2.6/site-packages/twisted/python/log.py",
> l ine 153, in err
> _stuff = failure.Failure()
> File
> "/usr/local/lib/python2.6/site-packages/twisted/python/failure.py
> ", line 265, in __init__
> parentCs = reflect.allYourBase(self.type) ", line 542, in
> allYourBase
> accumulateBases(classObj, l, baseClass)
> File
> "/usr/local/lib/python2.6/site-packages/twisted/python/reflect.py", line 550,
> in accumulateBases
> accumulateBases(base, l, baseClass)
> File
> "/usr/local/lib/python2.6/site-packages/twisted/python/reflect.py", line 550,
> in accumulateBases
> accumulateBases(base, l, baseClass)
> File
> "/usr/local/lib/python2.6/site-packages/twisted/python/reflect.py", line 550,
> in accumulateBases
> accumulateBases(base, l, baseClass)
> File
> "/usr/local/lib/python2.6/site-packages/twisted/python/reflect.py", line 550,
> in accumulateBases
> accumulateBases(base, l, baseClass)
> exceptions.RuntimeError: maximum recursion depth exceeded
>
> Similarily written programmes fail in the same fashion. What is suspicious is
> that there is no recursion in the offending section. Even if I create one
> worker tasklet, I get the same error.
>
> def twistedReactor():
> l = task.LoopingCall(stackless.schedule)
> l.start(.01)
> reactor.run()
>
> however, if I change
>
> l = task.LoopingCall(stackless.schedule)
>
> to
>
> l = task.LoopingCall(tick)
>
> and tick is
>
> def tick():
> stackless.schedule()
>
> the programme works. Although a work around, I would like to find the real
> problem.
>
> What particular worries me is when I created small test examples, I was not
> able to recreate the problem. Something else is going on....
>
> What I would appreciate is some hints as to what may be happening.
>
> - I normally don't expect "Maximum Recursion Depth" errors in Stackless.
> - What is the reflect.allYourBases stuff?
> - What is log.deferr? (I don't recall seeing that method).
>
> If I get few clues, it would make it easier for me to write new tests and
> zero in on the problem. Hopefully the problem is with my code rather than
> Stackless 2.6.1 and/or Twisted 8.2
>
> I have included some sample code. Unfortunately ToyProcessor5.py is a bit
> large (I have newer code that is smaller but requires more files)
>
> Cheers,
> Andrew
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
> Stackless mailing list
> [email protected]
> http://www.stackless.com/mailman/listinfo/stackless
>
--
Pozdrav / Regards
Aleksandar
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