gh-128421: make exception group methods thread safe (#129298)

Author: kumaraditya303

Objects/clinic/exceptions.c.h

@@ -20,8 +20,9 @@
 
 /*[clinic input]
 class BaseException "PyBaseExceptionObject *" "&PyExc_BaseException"
+class BaseExceptionGroup "PyBaseExceptionGroupObject *" "&PyExc_BaseExceptionGroup"
 [clinic start generated code]*/
-/*[clinic end generated code: output=da39a3ee5e6b4b0d input=90558eb0fbf8a3d0]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=b7c45e78cff8edc3]*/
 
 
 /* Compatibility aliases */
@@ -1034,10 +1035,18 @@ BaseExceptionGroup_str(PyBaseExceptionGroupObject *self)
 self->msg, num_excs, num_excs>1 ? "s" : "");
 }
 
+/*[clinic input]
+@critical_section
+BaseExceptionGroup.derive
+ excs: object
+ /
+[clinic start generated code]*/
+
 staticPyObject*
-BaseExceptionGroup_derive(PyObject*self_, PyObject*excs)
+BaseExceptionGroup_derive_impl(PyBaseExceptionGroupObject*self,
+PyObject*excs)
+/*[clinic end generated code: output=4307564218dfbf06 input=f72009d38e98cec1]*/
 {
-PyBaseExceptionGroupObject*self=_PyBaseExceptionGroupObject_cast(self_);
 PyObject*init_args=PyTuple_Pack(2, self->msg, excs);
 if (!init_args){
 returnNULL;
@@ -1330,8 +1339,17 @@ exceptiongroup_split_recursive(PyObject *exc,
 returnretval;
 }
 
+/*[clinic input]
+@critical_section
+BaseExceptionGroup.split
+ matcher_value: object
+ /
+[clinic start generated code]*/
+
 staticPyObject*
-BaseExceptionGroup_split(PyObject*self, PyObject*matcher_value)
+BaseExceptionGroup_split_impl(PyBaseExceptionGroupObject*self,
+PyObject*matcher_value)
+/*[clinic end generated code: output=d74db579da4df6e2 input=0c5cfbfed57e0052]*/
 {
 _exceptiongroup_split_matcher_typematcher_type;
 if (get_matcher_type(matcher_value, &matcher_type) <0){
@@ -1341,7 +1359,7 @@ BaseExceptionGroup_split(PyObject *self, PyObject *matcher_value)
 _exceptiongroup_split_resultsplit_result;
 boolconstruct_rest= true;
 if (exceptiongroup_split_recursive(
-self, matcher_type, matcher_value,
+(PyObject*)self, matcher_type, matcher_value,
 construct_rest, &split_result) <0){
 returnNULL;
  }
@@ -1356,8 +1374,17 @@ BaseExceptionGroup_split(PyObject *self, PyObject *matcher_value)
 returnresult;
 }
 
+/*[clinic input]
+@critical_section
+BaseExceptionGroup.subgroup
+ matcher_value: object
+ /
+[clinic start generated code]*/
+
 staticPyObject*
-BaseExceptionGroup_subgroup(PyObject*self, PyObject*matcher_value)
+BaseExceptionGroup_subgroup_impl(PyBaseExceptionGroupObject*self,
+PyObject*matcher_value)
+/*[clinic end generated code: output=07dbec8f77d4dd8e input=988ffdd755a151ce]*/
 {
 _exceptiongroup_split_matcher_typematcher_type;
 if (get_matcher_type(matcher_value, &matcher_type) <0){
@@ -1367,7 +1394,7 @@ BaseExceptionGroup_subgroup(PyObject *self, PyObject *matcher_value)
 _exceptiongroup_split_resultsplit_result;
 boolconstruct_rest= false;
 if (exceptiongroup_split_recursive(
-self, matcher_type, matcher_value,
+(PyObject*)self, matcher_type, matcher_value,
 construct_rest, &split_result) <0){
 returnNULL;
  }
@@ -1633,9 +1660,9 @@ static PyMemberDef BaseExceptionGroup_members[] ={
 staticPyMethodDefBaseExceptionGroup_methods[] ={
 {"__class_getitem__", (PyCFunction)Py_GenericAlias,
 METH_O|METH_CLASS, PyDoc_STR("See PEP 585")},
-{"derive", (PyCFunction)BaseExceptionGroup_derive, METH_O},
-{"split", (PyCFunction)BaseExceptionGroup_split, METH_O},
-{"subgroup", (PyCFunction)BaseExceptionGroup_subgroup, METH_O},
+BASEEXCEPTIONGROUP_DERIVE_METHODDEF
+BASEEXCEPTIONGROUP_SPLIT_METHODDEF
+BASEEXCEPTIONGROUP_SUBGROUP_METHODDEF
 {NULL}
 };