[C++-sig] use of hash to map c++ pointers with python objects (original) (raw)
Renato Araujo renatox at gmail.com
Fri Aug 28 23:32:25 CEST 2009
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Hi all,
I'm working on PySide[1] and we have a problem with map between c++ pointers and PyObject.
In this section of FAQ: http://www.boost.org/doc/libs/1_40_0/libs/python/doc/v2/faq.html#xref, they give some examples on how to handle this kind of problem. But the point is: dynamic_cast does not work between shared libraries. My wrapper class is not visible to another library then the dynamic_cast fails.
Then I tried implement a hash table to map c++ pointers and python objects, but in some point of the code I received the pointer in another class representation and this moves the pointer address to another region of memory, causing a mess in my hash. I would like to know if someone has any idea about how to solve this problem. How can I map a c++ pointer to a PyObject between libraries without use dynamic_cast.
I have attached a small use case for this case.
Renato Araujo Oliveira Filho [1] PySide = http://pyside.org -------------- next part -------------- A non-text attachment was scrubbed... Name: main.cpp Type: text/x-c++src Size: 1696 bytes Desc: not available URL: <http://mail.python.org/pipermail/cplusplus-sig/attachments/20090828/89a6c672/attachment.cpp>
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