Hi again,
On 07/14/2013 10:39 AM, Stefan Behnel wrote:
> Torsten Landschoff, 11.07.2013 00:10:
>> I attached my current (trivial) patch. Currently I only support a decorator
>>
>> @cython.noclear
>> cdef class ...
>>
>> to inhibit generation of tp_clear.
> Thanks, looks ok to me. Please op
Hi Stefan,
On 07/14/2013 10:39 AM, Stefan Behnel wrote:
> Torsten Landschoff, 11.07.2013 00:10:
>> I attached my current (trivial) patch. Currently I only support a decorator
>>
>> @cython.noclear
>> cdef class ...
>>
>> to inhibit generation of tp_clear.
> Thanks, looks ok to me. Please o
Torsten Landschoff, 11.07.2013 00:10:
> I attached my current (trivial) patch. Currently I only support a decorator
>
> @cython.noclear
> cdef class ...
>
> to inhibit generation of tp_clear.
Thanks, looks ok to me. Please open a pull request on github for it.
> Before I continue with
Hi Stefan,
sorry for the delay, I was in the US for parental leave. I had hoped to
find some time to work on the promised patch over there, but I fell short.
On 04/22/2013 02:28 PM, Stefan Behnel wrote:
> Please do. Just ask back on this list if there's anything that's not
> clear to you.
I attac
Torsten Landschoff, 23.04.2013 10:06:
> On 04/23/2013 08:01 AM, Stefan Behnel wrote:
>> Greg Ewing, 23.04.2013 01:16:
>>> Only if subclassing of Slot and Context are forbidden.
>> Right. Subtypes of a non-GC type can happily add attributes and start
>> supporting cyclic garbage collection, includin
On 04/23/2013 08:01 AM, Stefan Behnel wrote:
> Greg Ewing, 23.04.2013 01:16:
>> Only if subclassing of Slot and Context are forbidden.
> Right. Subtypes of a non-GC type can happily add attributes and start
> supporting cyclic garbage collection, including Python subclasses. So this
> only applies
Greg Ewing, 23.04.2013 01:16:
> Stefan Behnel wrote:
>> Torsten Landschoff, 22.04.2013 13:07:
>>> One could even think about building a graph of possible object
>>> relationships ... Slot refers only to Slots and Slots only to Context, so
>>> these can't build a cycle.
>>
>> Interesting. Yes, that
Stefan Behnel wrote:
Torsten Landschoff, 22.04.2013 13:07:
One could even think about building a graph of possible object
relationships ... Slot refers only to Slots and Slots only to Context, so
these can't build a cycle.
Interesting. Yes, that might work.
Only if subclassing of Slot and
Torsten Landschoff, 22.04.2013 13:56:
> On 04/22/2013 01:50 PM, Stefan Behnel wrote:
>>> a good idea would be to warn if __dealloc__ actually references a
>>> Python attribute that tp_clear could have cleared, with a pointer to the
>>> class decorator that exempts the attribute/instance from tp_cle
Hi Stefan,
On 04/22/2013 01:50 PM, Stefan Behnel wrote:
> Exactly - an extremely special case. It's an inherent property of the
> Cython language that user visible references are never NULL. (minus
> evil C code, obviously.)
Suits me.
>> a good idea would be to warn if __dealloc__ actually refere
Torsten Landschoff, 22.04.2013 13:07:
> On 04/22/2013 07:31 AM, Stefan Behnel wrote:
>>> But this did not give me the crucial hint: Currently, any references to
>>> Python objects *may* be invalid at the time dealloc is called. This is
>>> because Cython generates a tp_clear function for each exten
Hi Stefan,
thank you for your extremely quick reply!
On 04/22/2013 07:31 AM, Stefan Behnel wrote:
>> But this did not give me the crucial hint: Currently, any references to
>> Python objects *may* be invalid at the time dealloc is called. This is
>> because Cython generates a tp_clear function fo
Hi,
Torsten Landschoff, 21.04.2013 23:57:
> I am using Cython to generate a trivial wrapper for a small subset of
> the (already small) interface of libp11 (see
> https://github.com/OpenSC/libp11 for information about libp11). I know a
> bit about Python extension modules and just wanted to avoid
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