bpo-30860: Consolidate stateful runtime globals. (#2594)
* group the (stateful) runtime globals into various topical structs
* consolidate the topical structs under a single top-level _PyRuntimeState struct
* add a check-c-globals.py script that helps identify runtime globals
Other globals are excluded (see globals.txt and check-c-globals.py).
diff --git a/Python/_warnings.c b/Python/_warnings.c
index 8616195..a5e42a3 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -8,13 +8,6 @@
MODULE_NAME " provides basic warning filtering support.\n"
"It is a helper module to speed up interpreter start-up.");
-/* Both 'filters' and 'onceregistry' can be set in warnings.py;
- get_warnings_attr() will reset these variables accordingly. */
-static PyObject *_filters; /* List */
-static PyObject *_once_registry; /* Dict */
-static PyObject *_default_action; /* String */
-static long _filters_version;
-
_Py_IDENTIFIER(argv);
_Py_IDENTIFIER(stderr);
@@ -53,7 +46,7 @@
}
/* don't try to import after the start of the Python finallization */
- if (try_import && _Py_Finalizing == NULL) {
+ if (try_import && !_Py_IS_FINALIZING()) {
warnings_module = PyImport_Import(warnings_str);
if (warnings_module == NULL) {
/* Fallback to the C implementation if we cannot get
@@ -90,10 +83,10 @@
if (registry == NULL) {
if (PyErr_Occurred())
return NULL;
- return _once_registry;
+ return _PyRuntime.warnings.once_registry;
}
- Py_DECREF(_once_registry);
- _once_registry = registry;
+ Py_DECREF(_PyRuntime.warnings.once_registry);
+ _PyRuntime.warnings.once_registry = registry;
return registry;
}
@@ -108,11 +101,11 @@
if (PyErr_Occurred()) {
return NULL;
}
- return _default_action;
+ return _PyRuntime.warnings.default_action;
}
- Py_DECREF(_default_action);
- _default_action = default_action;
+ Py_DECREF(_PyRuntime.warnings.default_action);
+ _PyRuntime.warnings.default_action = default_action;
return default_action;
}
@@ -132,23 +125,24 @@
return NULL;
}
else {
- Py_DECREF(_filters);
- _filters = warnings_filters;
+ Py_DECREF(_PyRuntime.warnings.filters);
+ _PyRuntime.warnings.filters = warnings_filters;
}
- if (_filters == NULL || !PyList_Check(_filters)) {
+ PyObject *filters = _PyRuntime.warnings.filters;
+ if (filters == NULL || !PyList_Check(filters)) {
PyErr_SetString(PyExc_ValueError,
MODULE_NAME ".filters must be a list");
return NULL;
}
- /* _filters could change while we are iterating over it. */
- for (i = 0; i < PyList_GET_SIZE(_filters); i++) {
+ /* _PyRuntime.warnings.filters could change while we are iterating over it. */
+ for (i = 0; i < PyList_GET_SIZE(filters); i++) {
PyObject *tmp_item, *action, *msg, *cat, *mod, *ln_obj;
Py_ssize_t ln;
int is_subclass, good_msg, good_mod;
- tmp_item = PyList_GET_ITEM(_filters, i);
+ tmp_item = PyList_GET_ITEM(filters, i);
if (!PyTuple_Check(tmp_item) || PyTuple_GET_SIZE(tmp_item) != 5) {
PyErr_Format(PyExc_ValueError,
MODULE_NAME ".filters item %zd isn't a 5-tuple", i);
@@ -220,9 +214,9 @@
version_obj = _PyDict_GetItemId(registry, &PyId_version);
if (version_obj == NULL
|| !PyLong_CheckExact(version_obj)
- || PyLong_AsLong(version_obj) != _filters_version) {
+ || PyLong_AsLong(version_obj) != _PyRuntime.warnings.filters_version) {
PyDict_Clear(registry);
- version_obj = PyLong_FromLong(_filters_version);
+ version_obj = PyLong_FromLong(_PyRuntime.warnings.filters_version);
if (version_obj == NULL)
return -1;
if (_PyDict_SetItemId(registry, &PyId_version, version_obj) < 0) {
@@ -520,7 +514,7 @@
if (registry == NULL)
goto cleanup;
}
- /* _once_registry[(text, category)] = 1 */
+ /* _PyRuntime.warnings.once_registry[(text, category)] = 1 */
rc = update_registry(registry, text, category, 0);
}
else if (_PyUnicode_EqualToASCIIString(action, "module")) {
@@ -910,7 +904,7 @@
static PyObject *
warnings_filters_mutated(PyObject *self, PyObject *args)
{
- _filters_version++;
+ _PyRuntime.warnings.filters_version++;
Py_RETURN_NONE;
}
@@ -1160,7 +1154,8 @@
}
/* This assumes the line number is zero for now. */
- return PyTuple_Pack(5, action_obj, Py_None, category, Py_None, _PyLong_Zero);
+ return PyTuple_Pack(5, action_obj, Py_None,
+ category, Py_None, _PyLong_Zero);
}
static PyObject *
@@ -1228,33 +1223,35 @@
if (m == NULL)
return NULL;
- if (_filters == NULL) {
- _filters = init_filters();
- if (_filters == NULL)
+ if (_PyRuntime.warnings.filters == NULL) {
+ _PyRuntime.warnings.filters = init_filters();
+ if (_PyRuntime.warnings.filters == NULL)
return NULL;
}
- Py_INCREF(_filters);
- if (PyModule_AddObject(m, "filters", _filters) < 0)
+ Py_INCREF(_PyRuntime.warnings.filters);
+ if (PyModule_AddObject(m, "filters", _PyRuntime.warnings.filters) < 0)
return NULL;
- if (_once_registry == NULL) {
- _once_registry = PyDict_New();
- if (_once_registry == NULL)
+ if (_PyRuntime.warnings.once_registry == NULL) {
+ _PyRuntime.warnings.once_registry = PyDict_New();
+ if (_PyRuntime.warnings.once_registry == NULL)
return NULL;
}
- Py_INCREF(_once_registry);
- if (PyModule_AddObject(m, "_onceregistry", _once_registry) < 0)
+ Py_INCREF(_PyRuntime.warnings.once_registry);
+ if (PyModule_AddObject(m, "_onceregistry",
+ _PyRuntime.warnings.once_registry) < 0)
return NULL;
- if (_default_action == NULL) {
- _default_action = PyUnicode_FromString("default");
- if (_default_action == NULL)
+ if (_PyRuntime.warnings.default_action == NULL) {
+ _PyRuntime.warnings.default_action = PyUnicode_FromString("default");
+ if (_PyRuntime.warnings.default_action == NULL)
return NULL;
}
- Py_INCREF(_default_action);
- if (PyModule_AddObject(m, "_defaultaction", _default_action) < 0)
+ Py_INCREF(_PyRuntime.warnings.default_action);
+ if (PyModule_AddObject(m, "_defaultaction",
+ _PyRuntime.warnings.default_action) < 0)
return NULL;
- _filters_version = 0;
+ _PyRuntime.warnings.filters_version = 0;
return m;
}