internal static void InitializeModuleDef()
{
if (module_def == IntPtr.Zero)
{
module_def = ModuleDefOffset.AllocModuleDef("clr");
}
}
internal static void ReleaseModuleDef()
{
if (module_def == IntPtr.Zero)
{
return;
}
ModuleDefOffset.FreeModuleDef(module_def);
module_def = IntPtr.Zero;
}
//===================================================================
// Cleanup resources upon shutdown of the Python runtime.
//===================================================================
internal static void Shutdown()
{
#if (PYTHON32 || PYTHON33 || PYTHON34)
Runtime.Decref(py_clr_module);
Runtime.Decref(root.pyHandle);
ModuleDefOffset.FreeModuleDef(module_def);
#else
Runtime.Decref(root.pyHandle);
Runtime.Decref(root.pyHandle);
#endif
Runtime.Decref(py_import);
}
//===================================================================
// Cleanup resources upon shutdown of the Python runtime.
//===================================================================
internal static void Shutdown()
{
#if (PYTHON32 || PYTHON33 || PYTHON34 || PYTHON35)
if (0 != Runtime.Py_IsInitialized())
{
Runtime.Decref(py_clr_module);
Runtime.Decref(root.pyHandle);
}
ModuleDefOffset.FreeModuleDef(module_def);
#else
if (0 != Runtime.Py_IsInitialized())
{
Runtime.Decref(root.pyHandle);
Runtime.Decref(root.pyHandle);
}
#endif
if (0 != Runtime.Py_IsInitialized())
{
Runtime.Decref(py_import);
}
}
//===================================================================
// Initialization performed on startup of the Python runtime.
//===================================================================
internal static void Initialize()
{
// Initialize the Python <--> CLR module hook. We replace the
// built-in Python __import__ with our own. This isn't ideal,
// but it provides the most "Pythonic" way of dealing with CLR
// modules (Python doesn't provide a way to emulate packages).
IntPtr dict = Runtime.PyImport_GetModuleDict();
#if (PYTHON32 || PYTHON33 || PYTHON34 || PYTHON35)
IntPtr mod = Runtime.PyImport_ImportModule("builtins");
py_import = Runtime.PyObject_GetAttrString(mod, "__import__");
#else
IntPtr mod = Runtime.PyDict_GetItemString(dict, "__builtin__");
py_import = Runtime.PyObject_GetAttrString(mod, "__import__");
#endif
hook = new MethodWrapper(typeof(ImportHook), "__import__", "TernaryFunc");
Runtime.PyObject_SetAttrString(mod, "__import__", hook.ptr);
Runtime.Decref(hook.ptr);
root = new CLRModule();
#if (PYTHON32 || PYTHON33 || PYTHON34 || PYTHON35)
// create a python module with the same methods as the clr module-like object
module_def = ModuleDefOffset.AllocModuleDef("clr");
py_clr_module = Runtime.PyModule_Create2(module_def, 3);
// both dicts are borrowed references
IntPtr mod_dict = Runtime.PyModule_GetDict(py_clr_module);
IntPtr clr_dict = Runtime._PyObject_GetDictPtr(root.pyHandle); // PyObject**
clr_dict = (IntPtr)Marshal.PtrToStructure(clr_dict, typeof(IntPtr));
Runtime.PyDict_Update(mod_dict, clr_dict);
Runtime.PyDict_SetItemString(dict, "CLR", py_clr_module);
Runtime.PyDict_SetItemString(dict, "clr", py_clr_module);
#else
Runtime.Incref(root.pyHandle); // we are using the module two times
Runtime.PyDict_SetItemString(dict, "CLR", root.pyHandle);
Runtime.PyDict_SetItemString(dict, "clr", root.pyHandle);
#endif
}