Hello list, I am trying to create C++ objects dynamically (some kind of factory) with use of embedded Python interpreter (i.e. eval).
Naive implementation: namespace bp = boost::python; bp::object main_module = ...; bp::object main_namespace = ...; bp::object bpo_ob = bp::eval((type+"()").c_str(), main_namespace); Object* ob = bp::extract<Object*>(pbo_ob); Simple eval returns bp::object, so after it goes out of scope PyDECREF is called and finally Python's garbage collector wipes Object out. Based on FAQ's entry: http://www.boost.org/doc/libs/1_50_0/libs/python/doc/v2/faq.html#ownership I set held_type to std::auto_ptr in Object definition: BOOST_PYTHON_MODULE(MyModule) { class_<Object, std::auto_ptr<Object>>("Object", init<>()); } but I am not sure how to take the ownership over objects created this way. I was thinking about: bp::object bpo_ob = bp::eval((type+"()").c_str(), main_namespace); std::auto_ptr<Object> ob = bp::extract<std::auto_ptr<Object>>(bpo_ob); Object* o = ob.release(); but I am not sure about its correctness with respect to memory leaks. When run, the program does not crash. Thanks! _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
