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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup pythonintern
*
* This file inserts an exit callback into Python's 'atexit' module.
* Without this sys.exit() can crash because blender is not properly closing
* resources.
*/
#include <Python.h>
#include "BLI_utildefines.h"
#include "bpy.h" /* own include */
#include "bpy_capi_utils.h"
#include "WM_api.h"
static PyObject *bpy_atexit(PyObject *UNUSED(self), PyObject *UNUSED(args), PyObject *UNUSED(kw))
{
/* close down enough of blender at least not to crash */
struct bContext *C = BPY_context_get();
WM_exit_ex(C, false);
Py_RETURN_NONE;
}
static PyMethodDef meth_bpy_atexit = {"bpy_atexit", (PyCFunction)bpy_atexit, METH_NOARGS, NULL};
static PyObject *func_bpy_atregister = NULL; /* borrowed reference, `atexit` holds. */
static void atexit_func_call(const char *func_name, PyObject *atexit_func_arg)
{
/* NOTE(campbell): no error checking, if any of these fail we'll get a crash
* this is intended, but if its problematic it could be changed. */
PyObject *atexit_mod = PyImport_ImportModuleLevel("atexit", NULL, NULL, NULL, 0);
PyObject *atexit_func = PyObject_GetAttrString(atexit_mod, func_name);
PyObject *args = PyTuple_New(1);
PyObject *ret;
PyTuple_SET_ITEM(args, 0, atexit_func_arg);
Py_INCREF(atexit_func_arg); /* only incref so we don't dec'ref along with 'args' */
ret = PyObject_CallObject(atexit_func, args);
Py_DECREF(atexit_mod);
Py_DECREF(atexit_func);
Py_DECREF(args);
if (ret) {
Py_DECREF(ret);
}
else { /* should never happen */
PyErr_Print();
}
}
void BPY_atexit_register(void)
{
/* atexit module owns this new function reference */
BLI_assert(func_bpy_atregister == NULL);
func_bpy_atregister = (PyObject *)PyCFunction_New(&meth_bpy_atexit, NULL);
atexit_func_call("register", func_bpy_atregister);
}
void BPY_atexit_unregister(void)
{
BLI_assert(func_bpy_atregister != NULL);
atexit_func_call("unregister", func_bpy_atregister);
func_bpy_atregister = NULL; /* don't really need to set but just in case */
}
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