On Monday, January 9, 2017 at 7:03:57 PM UTC+1, Volker Braun wrote:
>
> On Monday, January 9, 2017 at 4:45:19 PM UTC+1, Jean-Pierre Flori wrote:
>>
>> You can just use the Python "del" operator and Cython should translate it
>> to a destructor call.
>>
>
> No, there is the following caveat when cyclic Python references are
> involved:
>
> __dealloc__ is always called, but there is no guarantee that pure Python
> attributes are still set (they may be cleared, that is, set to None, in
> order to break cycles). Cython (cdef) attributes are still set.
>
> __del__ will not always be called, some garbage objects are skipped to
> break cycles. If __del__ is being called then all Python attributes are
> still set.
>
> TLDR: use __dealloc__ to destroy wrapped C++ objects.
>
I meat write with __dealloc__:
cdef __dealloc__:
blablabla
....
if I_made_sure_new_was_called_and_constructor_got_called:
del my_cdefed_c++_pointer_which_has_been_allocated_with_new
Isn't that the correct way to trigger Cytohn writin down an explicit call
to the destructor?
--
You received this message because you are subscribed to the Google Groups
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at https://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.
