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bpo-14935: Remove static state from the _csv module #23224

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Merged
merged 12 commits into from
Dec 15, 2020
Merged

bpo-14935: Remove static state from the _csv module #23224

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a2a0e6f
Remove static state from the _csv module
encukou May 12, 2020
09802b2
Use PyModule_AddObjectRef and PyTuple_Pack
encukou Nov 10, 2020
1665ac7
Rename m_state to module_state
encukou Nov 13, 2020
23f844a
Use Py_CLEAR rather than Py_XDECREF
encukou Nov 13, 2020
8d1f95d
Use `module` rather than `m`
encukou Nov 13, 2020
2c60895
Factor out calling _PyType_GetModuleByDef & PyModule_GetState
encukou Nov 13, 2020
e69d0a1
Set freed pointers to NULL
encukou Nov 13, 2020
fb93e7f
Only call get_csv_state up to once per function
encukou Nov 13, 2020
b62987b
Pass module_state directly to _call_dialect
encukou Nov 13, 2020
f12a768
Add NULL check for _csv_state_from_type
encukou Dec 8, 2020
f302029
Use Py_NewRef where appropriate
encukou Dec 8, 2020
b8c37bf
Use designated initializers for spec structs
encukou Dec 8, 2020
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Pass module_state directly to _call_dialect
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@encukou
encukou committed Nov 13, 2020
commit b62987bd34d4f21f930c0d8f3be72b9a19c87eb9
18 changes: 8 additions & 10 deletions Modules/_csv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -534,13 +534,8 @@ PyType_Spec Dialect_Type_spec = {
* description of the dialect
*/
static PyObject *
_call_dialect(PyObject *module, PyObject *dialect_inst, PyObject *kwargs)
_call_dialect(_csvstate *module_state, PyObject *dialect_inst, PyObject *kwargs)
{
_csvstate *module_state = PyModule_GetState(module);
if (module_state == NULL) {
return NULL;
}

PyObject *type = (PyObject *)module_state->dialect_type;
if (dialect_inst) {
return PyObject_VectorcallDict(type, &dialect_inst, 1, kwargs);
Expand Down Expand Up @@ -1004,7 +999,8 @@ csv_reader(PyObject *module, PyObject *args, PyObject *keyword_args)
Py_DECREF(self);
return NULL;
}
self->dialect = (DialectObj *)_call_dialect(module, dialect, keyword_args);
self->dialect = (DialectObj *)_call_dialect(module_state, dialect,
keyword_args);
if (self->dialect == NULL) {
Py_DECREF(self);
return NULL;
Expand Down Expand Up @@ -1427,7 +1423,8 @@ csv_writer(PyObject *module, PyObject *args, PyObject *keyword_args)
Py_DECREF(self);
return NULL;
}
self->dialect = (DialectObj *)_call_dialect(module, dialect, keyword_args);
self->dialect = (DialectObj *)_call_dialect(module_state, dialect,
keyword_args);
if (self->dialect == NULL) {
Py_DECREF(self);
return NULL;
Expand All @@ -1449,6 +1446,7 @@ static PyObject *
csv_register_dialect(PyObject *module, PyObject *args, PyObject *kwargs)
{
PyObject *name_obj, *dialect_obj = NULL;
_csvstate *module_state = get_csv_state(module);
PyObject *dialect;

if (!PyArg_UnpackTuple(args, "", 1, 2, &name_obj, &dialect_obj))
Expand All @@ -1460,10 +1458,10 @@ csv_register_dialect(PyObject *module, PyObject *args, PyObject *kwargs)
}
if (PyUnicode_READY(name_obj) == -1)
return NULL;
dialect = _call_dialect(module, dialect_obj, kwargs);
dialect = _call_dialect(module_state, dialect_obj, kwargs);
if (dialect == NULL)
return NULL;
if (PyDict_SetItem(get_csv_state(module)->dialects, name_obj, dialect) < 0) {
if (PyDict_SetItem(module_state->dialects, name_obj, dialect) < 0) {
Py_DECREF(dialect);
return NULL;
}
Expand Down