pybind_init.hh

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#ifndef __PYTHON_PYBIND_INIT_HH__
#define __PYTHON_PYBIND_INIT_HH__
 
#include <Python.h>
 
#include "pybind11/pybind11.h"
 
namespace gem5
{
 
struct PybindModuleInit
{
    PybindModuleInit(const char *name, PyObject *(*func)())
    {
        if (Py_IsInitialized()) {
            // If python is running, initialize and inject the module.
            PyImport_AddModule(name);
            PyObject *sys_modules = PyImport_GetModuleDict();
            PyDict_SetItemString(sys_modules, name, func());
        } else {
            // If not, tell python how to build importer itself later.
            PyImport_AppendInittab(name, func);
        }
    }
};
 
} // namespace gem5
 
#define GEM5_PYBIND_MODULE_INIT(name, func) \
namespace { \
 \
::PyObject * \
initializer() \
{ \
    static ::pybind11::module_::module_def mod_def; \
    static auto m = ::pybind11::module_::create_extension_module( \
            #name, nullptr, &mod_def); \
    func(m); \
    m.inc_ref(); \
    return m.ptr(); \
} \
 \
::gem5::PybindModuleInit modInit(#name, initializer); \
 \
} // anonymous namespace
 
#endif // __PYTHON_PYBIND_INIT_HH__