bpo-35582: Inline arguments tuple unpacking in handwritten code. (GH-11524)
Inline PyArg_UnpackTuple() and _PyArg_UnpackStack() in performance sensitive code in the builtins and operator modules.
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@ -1011,15 +1011,12 @@ itemgetter_call(itemgetterobject *ig, PyObject *args, PyObject *kw)
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Py_ssize_t i, nitems=ig->nitems;
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assert(PyTuple_CheckExact(args));
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if (kw == NULL && PyTuple_GET_SIZE(args) == 1) {
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obj = PyTuple_GET_ITEM(args, 0);
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}
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else {
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if (!_PyArg_NoKeywords("itemgetter", kw))
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return NULL;
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if (!PyArg_UnpackTuple(args, "itemgetter", 1, 1, &obj))
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return NULL;
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}
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if (!_PyArg_NoKeywords("itemgetter", kw))
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return NULL;
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if (!_PyArg_CheckPositional("itemgetter", PyTuple_GET_SIZE(args), 1, 1))
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return NULL;
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obj = PyTuple_GET_ITEM(args, 0);
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if (nitems == 1) {
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if (ig->index >= 0
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&& PyTuple_CheckExact(obj)
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@ -1317,8 +1314,9 @@ attrgetter_call(attrgetterobject *ag, PyObject *args, PyObject *kw)
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if (!_PyArg_NoKeywords("attrgetter", kw))
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return NULL;
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if (!PyArg_UnpackTuple(args, "attrgetter", 1, 1, &obj))
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if (!_PyArg_CheckPositional("attrgetter", PyTuple_GET_SIZE(args), 1, 1))
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return NULL;
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obj = PyTuple_GET_ITEM(args, 0);
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if (ag->nattrs == 1) /* ag->attr is always a tuple */
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return dotted_getattr(obj, PyTuple_GET_ITEM(ag->attr, 0));
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@ -1561,8 +1559,9 @@ methodcaller_call(methodcallerobject *mc, PyObject *args, PyObject *kw)
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if (!_PyArg_NoKeywords("methodcaller", kw))
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return NULL;
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if (!PyArg_UnpackTuple(args, "methodcaller", 1, 1, &obj))
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if (!_PyArg_CheckPositional("methodcaller", PyTuple_GET_SIZE(args), 1, 1))
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return NULL;
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obj = PyTuple_GET_ITEM(args, 0);
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method = PyObject_GetAttr(obj, mc->name);
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if (method == NULL)
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return NULL;
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@ -1067,19 +1067,21 @@ builtin_exec_impl(PyObject *module, PyObject *source, PyObject *globals,
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static PyObject *
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builtin_getattr(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
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{
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PyObject *v, *result, *dflt = NULL;
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PyObject *name;
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PyObject *v, *name, *result;
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if (!_PyArg_UnpackStack(args, nargs, "getattr", 2, 3, &v, &name, &dflt))
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if (!_PyArg_CheckPositional("getattr", nargs, 2, 3))
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return NULL;
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v = args[0];
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name = args[1];
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if (!PyUnicode_Check(name)) {
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PyErr_SetString(PyExc_TypeError,
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"getattr(): attribute name must be string");
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return NULL;
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}
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if (dflt != NULL) {
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if (nargs > 2) {
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if (_PyObject_LookupAttr(v, name, &result) == 0) {
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PyObject *dflt = args[2];
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Py_INCREF(dflt);
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return dflt;
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}
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@ -1372,11 +1374,11 @@ static PyObject *
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builtin_next(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
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{
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PyObject *it, *res;
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PyObject *def = NULL;
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if (!_PyArg_UnpackStack(args, nargs, "next", 1, 2, &it, &def))
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if (!_PyArg_CheckPositional("next", nargs, 1, 2))
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return NULL;
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it = args[0];
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if (!PyIter_Check(it)) {
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PyErr_Format(PyExc_TypeError,
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"'%.200s' object is not an iterator",
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@ -1387,7 +1389,8 @@ builtin_next(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
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res = (*it->ob_type->tp_iternext)(it);
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if (res != NULL) {
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return res;
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} else if (def != NULL) {
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} else if (nargs > 1) {
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PyObject *def = args[1];
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if (PyErr_Occurred()) {
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if(!PyErr_ExceptionMatches(PyExc_StopIteration))
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return NULL;
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@ -1503,20 +1506,22 @@ builtin_hex(PyObject *module, PyObject *number)
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/* AC: cannot convert yet, as needs PEP 457 group support in inspect */
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static PyObject *
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builtin_iter(PyObject *self, PyObject *args)
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builtin_iter(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
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{
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PyObject *v, *w = NULL;
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PyObject *v;
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if (!PyArg_UnpackTuple(args, "iter", 1, 2, &v, &w))
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if (!_PyArg_CheckPositional("iter", nargs, 1, 2))
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return NULL;
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if (w == NULL)
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v = args[0];
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if (nargs == 1)
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return PyObject_GetIter(v);
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if (!PyCallable_Check(v)) {
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PyErr_SetString(PyExc_TypeError,
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"iter(v, w): v must be callable");
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return NULL;
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}
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return PyCallIter_New(v, w);
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PyObject *sentinel = args[1];
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return PyCallIter_New(v, sentinel);
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}
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PyDoc_STRVAR(iter_doc,
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@ -2718,7 +2723,7 @@ static PyMethodDef builtin_methods[] = {
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BUILTIN_INPUT_METHODDEF
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BUILTIN_ISINSTANCE_METHODDEF
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BUILTIN_ISSUBCLASS_METHODDEF
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{"iter", builtin_iter, METH_VARARGS, iter_doc},
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{"iter", (PyCFunction)(void(*)(void))builtin_iter, METH_FASTCALL, iter_doc},
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BUILTIN_LEN_METHODDEF
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BUILTIN_LOCALS_METHODDEF
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{"max", (PyCFunction)(void(*)(void))builtin_max, METH_VARARGS | METH_KEYWORDS, max_doc},
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