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From: Nikolaus Rath <Nikolaus@rath.org>
To: python-list@python.org
Subject: Re: Missing stack frames?
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Date: Fri, 06 Jun 2014 19:04:03 -0700
In-Reply-To: <CAPTjJmoAYVi+1kA0uYkcfk10WZcEsLs3ci-0u9hj-LAJk+LHtA@mail.gmail.com> (Chris Angelico's message of "Fri, 6 Jun 2014 12:30:25 +1000")
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Chris Angelico <rosuav@gmail.com> writes:
> On Fri, Jun 6, 2014 at 12:16 PM, Nikolaus Rath <Nikolaus@rath.org> wrote:
>>  - Is there some way to make the call stack for destructors less confusi=
ng?
>
> First off, either don't have refloops, or explicitly break them.

The actual code isn't as simple as the example. I wasn't even aware
there were any refloops. Guess I have to start hunting them down now.

> That'll at least make things a bit more predictable; in CPython,
> you'll generally see destructors called as soon as something goes out
> of scope. Secondly, avoid threads when you're debugging a problem! I
> said this right at the beginning. If you run into problems, the first
> thing to do is isolate the system down to a single thread. Debugging
> is way easier without threads getting in each other's ways.

I don't see how this would have made a difference in this case. I still
would have gotten lots of apparently non-sensical backtraces. Only this
time they would all come from MainThread.


Best,
-Nikolaus
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