You're passing a null object pointer, so BPL correctly fails an assertion check?
Niall On 28 May 2012 at 21:39, Adam Preble wrote: > I wanted to provide an instance of a particular object I'm using for > Stackless Python state management. I'm trying to take over the green > thread management so I can do my own scheduling--but that's only context. > In the attached code, I'm trying to do some of life's more simple things. > I have the main module, and the scope for that module. With this, I had > hoped I could embed an actual instance of an object. From there I > anticipate calling it from Python without having to import or do anything > else. I figured I'd take the main script scope, add an object called > "runtime", and set it to the one in my C++ runtime. > > It compiles fine but blows up during runtime with the ever-descriptive > "error_already_set()" without a message. > > This problem only seems to touch the Boost part of the runtime so I don't > think that's an issue. I'm using Stackless Python 2.6.5, with Boost 1.49, > on Windows Vista with Visual Studio 2010. > > I had as my inspiration this: > http://wiki.python.org/moin/boost.python/HowTo#module_level_objects > > Which doesn't look to be current. I can't figure out how to use the > run-time example there, in particular. It looks like calling interpreter() > is not supported, or I have no idea how to make it happen. > > I'm doing something like this: > EmbeddedSynchronization embeddedSync; // A class member up above > ... > > [Did the PyInitialize] > boost::python::handle<> > mainHandle(boost::python::borrowed(PyImport_AddModule("__main__"))); > boost::python::object mainModule(mainHandle); > boost::python::scope mainScope(mainModule); > > boost::python::object class_oClassSync = > boost::python::class_<EmbeddedSynchronization, > boost::noncopyable>("EmbeddedSynchronization") > .def("nap", > &EmbeddedSynchronization::beNice) > .staticmethod("nap"); > > mainScope().attr("runtime") = embeddedSync; // Dead right here > > Stack trace going down in there: > > StacklessEmbedding.exe!boost::python::throw_error_already_set() Line 62 > C++ > StacklessEmbedding.exe!boost::python::expect_non_null<_object>(_object * > x) Line 46 C++ > > StacklessEmbedding.exe!boost::python::converter::detail::return_object_manager_from_python<boost::python::api::object>::operator()(_object > * obj) Line 156 + 0x9 bytes C++ > > StacklessEmbedding.exe!boost::python::call<boost::python::api::object>(_object > * callable, boost::type<boost::python::api::object> * __formal) Line 76 + > 0x10 bytes C++ > > StacklessEmbedding.exe!boost::python::api::object_operators<boost::python::api::object>::operator()() > Line 54 + 0x14 bytes C++ > > Anything obviously wrong? > -- Technology & Consulting Services - ned Productions Limited. http://www.nedproductions.biz/. VAT reg: IE 9708311Q. Work Portfolio: http://careers.stackoverflow.com/nialldouglas/ _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
