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Use _PyObject_FastCallVa() in type slots 

Issue #28915: Replace Py_VaBuildValue()+PyObject_Call() with
_PyObject_FastCallVa() to avoid the creation of temporary tuple.
This commit is contained in:
Victor Stinner 2016-12-09 00:41:46 +01:00
parent 7f39c0ccfc
commit 887b4307b6
1 changed files with 50 additions and 81 deletions
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131
Objects/typeobject.c
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@ -1420,15 +1420,15 @@ _PyObject_LookupSpecial(PyObject *self, _Py_Identifier *attrid)
return lookup_maybe(self, attrid);
}
/* A variation of PyObject_CallMethod that uses lookup_method()
/* A variation of PyObject_CallMethodObjArgs that uses lookup_method()
instead of PyObject_GetAttrString(). This uses the same convention
as lookup_method to cache the interned name string object. */
static PyObject *
call_method(PyObject *obj, _Py_Identifier *name, const char *format, ...)
call_method(PyObject *obj, _Py_Identifier *name, ...)
{
va_list va;
PyObject *func = NULL, *retval;
PyObject *func, *retval;
func = lookup_maybe(obj, name);
if (func == NULL) {
@ -1437,25 +1437,9 @@ call_method(PyObject *obj, _Py_Identifier *name, const char *format, ...)
return NULL;
}
if (format && *format) {
PyObject *args;
va_start(va, format);
args = Py_VaBuildValue(format, va);
va_end(va);
if (args == NULL) {
Py_DECREF(func);
return NULL;
}
assert(PyTuple_Check(args));
retval = PyObject_Call(func, args, NULL);
Py_DECREF(args);
}
else {
retval = _PyObject_CallNoArg(func);
}
va_start(va, name);
retval = _PyObject_VaCallFunctionObjArgs(func, va);
va_end(va);
Py_DECREF(func);
@ -1465,10 +1449,10 @@ call_method(PyObject *obj, _Py_Identifier *name, const char *format, ...)
/* Clone of call_method() that returns NotImplemented when the lookup fails. */
static PyObject *
call_maybe(PyObject *obj, _Py_Identifier *name, const char *format, ...)
call_maybe(PyObject *obj, _Py_Identifier *name, ...)
{
va_list va;
PyObject *func = NULL, *retval;
PyObject *func, *retval;
func = lookup_maybe(obj, name);
if (func == NULL) {
@ -1477,25 +1461,9 @@ call_maybe(PyObject *obj, _Py_Identifier *name, const char *format, ...)
return NULL;
}
if (format && *format) {
PyObject *args;
va_start(va, format);
args = Py_VaBuildValue(format, va);
va_end(va);
if (args == NULL) {
Py_DECREF(func);
return NULL;
}
assert(PyTuple_Check(args));
retval = PyObject_Call(func, args, NULL);
Py_DECREF(args);
}
else {
retval = _PyObject_CallNoArg(func);
}
va_start(va, name);
retval = _PyObject_VaCallFunctionObjArgs(func, va);
va_end(va);
Py_DECREF(func);
@ -5736,12 +5704,12 @@ FUNCNAME(PyObject *self) \
return call_method(self, &id, NULL); \
}
#define SLOT1(FUNCNAME, OPSTR, ARG1TYPE, ARGCODES) \
#define SLOT1(FUNCNAME, OPSTR, ARG1TYPE) \
static PyObject * \
FUNCNAME(PyObject *self, ARG1TYPE arg1) \
{ \
_Py_static_string(id, OPSTR); \
return call_method(self, &id, "(" ARGCODES ")", arg1); \
return call_method(self, &id, arg1, NULL); \
}
/* Boolean helper for SLOT1BINFULL().
@ -5794,20 +5762,20 @@ FUNCNAME(PyObject *self, PyObject *other) \
if (do_other && \
PyType_IsSubtype(Py_TYPE(other), Py_TYPE(self)) && \
method_is_overloaded(self, other, &rop_id)) { \
r = call_maybe(other, &rop_id, "(O)", self); \
r = call_maybe(other, &rop_id, self, NULL); \
if (r != Py_NotImplemented) \
return r; \
Py_DECREF(r); \
do_other = 0; \
} \
r = call_maybe(self, &op_id, "(O)", other); \
r = call_maybe(self, &op_id, other, NULL); \
if (r != Py_NotImplemented || \
Py_TYPE(other) == Py_TYPE(self)) \
return r; \
Py_DECREF(r); \
} \
if (do_other) { \
return call_maybe(other, &rop_id, "(O)", self); \
return call_maybe(other, &rop_id, self, NULL); \
} \
Py_RETURN_NOTIMPLEMENTED; \
}
@ -5815,14 +5783,6 @@ FUNCNAME(PyObject *self, PyObject *other) \
#define SLOT1BIN(FUNCNAME, SLOTNAME, OPSTR, ROPSTR) \
SLOT1BINFULL(FUNCNAME, FUNCNAME, SLOTNAME, OPSTR, ROPSTR)
#define SLOT2(FUNCNAME, OPSTR, ARG1TYPE, ARG2TYPE, ARGCODES) \
static PyObject * \
FUNCNAME(PyObject *self, ARG1TYPE arg1, ARG2TYPE arg2) \
{ \
_Py_static_string(id, #OPSTR); \
return call_method(self, &id, "(" ARGCODES ")", arg1, arg2); \
}
static Py_ssize_t
slot_sq_length(PyObject *self)
{
@ -5887,13 +5847,22 @@ static int
slot_sq_ass_item(PyObject *self, Py_ssize_t index, PyObject *value)
{
PyObject *res;
PyObject *index_obj;
index_obj = PyLong_FromSsize_t(index);
if (index_obj == NULL) {
return -1;
}
if (value == NULL)
res = call_method(self, &PyId___delitem__, "(n)", index);
res = call_method(self, &PyId___delitem__, index_obj, NULL);
else
res = call_method(self, &PyId___setitem__, "(nO)", index, value);
if (res == NULL)
res = call_method(self, &PyId___setitem__, index_obj, value, NULL);
Py_DECREF(index_obj);
if (res == NULL) {
return -1;
}
Py_DECREF(res);
return 0;
}
@ -5931,7 +5900,7 @@ slot_sq_contains(PyObject *self, PyObject *value)
#define slot_mp_length slot_sq_length
SLOT1(slot_mp_subscript, "__getitem__", PyObject *, "O")
SLOT1(slot_mp_subscript, "__getitem__", PyObject *)
static int
slot_mp_ass_subscript(PyObject *self, PyObject *key, PyObject *value)
@ -5939,9 +5908,9 @@ slot_mp_ass_subscript(PyObject *self, PyObject *key, PyObject *value)
PyObject *res;
if (value == NULL)
res = call_method(self, &PyId___delitem__, "(O)", key);
res = call_method(self, &PyId___delitem__, key, NULL);
else
res = call_method(self, &PyId___setitem__, "(OO)", key, value);
res = call_method(self, &PyId___setitem__, key, value, NULL);
if (res == NULL)
return -1;
@ -5973,7 +5942,7 @@ slot_nb_power(PyObject *self, PyObject *other, PyObject *modulus)
slot_nb_power, so check before calling self.__pow__. */
if (Py_TYPE(self)->tp_as_number != NULL &&
Py_TYPE(self)->tp_as_number->nb_power == slot_nb_power) {
return call_method(self, &PyId___pow__, "(OO)", other, modulus);
return call_method(self, &PyId___pow__, other, modulus, NULL);
}
Py_RETURN_NOTIMPLEMENTED;
}
@ -6053,28 +6022,28 @@ SLOT1BIN(slot_nb_or, nb_or, "__or__", "__ror__")
SLOT0(slot_nb_int, "__int__")
SLOT0(slot_nb_float, "__float__")
SLOT1(slot_nb_inplace_add, "__iadd__", PyObject *, "O")
SLOT1(slot_nb_inplace_subtract, "__isub__", PyObject *, "O")
SLOT1(slot_nb_inplace_multiply, "__imul__", PyObject *, "O")
SLOT1(slot_nb_inplace_matrix_multiply, "__imatmul__", PyObject *, "O")
SLOT1(slot_nb_inplace_remainder, "__imod__", PyObject *, "O")
SLOT1(slot_nb_inplace_add, "__iadd__", PyObject *)
SLOT1(slot_nb_inplace_subtract, "__isub__", PyObject *)
SLOT1(slot_nb_inplace_multiply, "__imul__", PyObject *)
SLOT1(slot_nb_inplace_matrix_multiply, "__imatmul__", PyObject *)
SLOT1(slot_nb_inplace_remainder, "__imod__", PyObject *)
/* Can't use SLOT1 here, because nb_inplace_power is ternary */
static PyObject *
slot_nb_inplace_power(PyObject *self, PyObject * arg1, PyObject *arg2)
{
_Py_IDENTIFIER(__ipow__);
return call_method(self, &PyId___ipow__, "(" "O" ")", arg1);
return call_method(self, &PyId___ipow__, arg1, NULL);
}
SLOT1(slot_nb_inplace_lshift, "__ilshift__", PyObject *, "O")
SLOT1(slot_nb_inplace_rshift, "__irshift__", PyObject *, "O")
SLOT1(slot_nb_inplace_and, "__iand__", PyObject *, "O")
SLOT1(slot_nb_inplace_xor, "__ixor__", PyObject *, "O")
SLOT1(slot_nb_inplace_or, "__ior__", PyObject *, "O")
SLOT1(slot_nb_inplace_lshift, "__ilshift__", PyObject *)
SLOT1(slot_nb_inplace_rshift, "__irshift__", PyObject *)
SLOT1(slot_nb_inplace_and, "__iand__", PyObject *)
SLOT1(slot_nb_inplace_xor, "__ixor__", PyObject *)
SLOT1(slot_nb_inplace_or, "__ior__", PyObject *)
SLOT1BIN(slot_nb_floor_divide, nb_floor_divide,
"__floordiv__", "__rfloordiv__")
SLOT1BIN(slot_nb_true_divide, nb_true_divide, "__truediv__", "__rtruediv__")
SLOT1(slot_nb_inplace_floor_divide, "__ifloordiv__", PyObject *, "O")
SLOT1(slot_nb_inplace_true_divide, "__itruediv__", PyObject *, "O")
SLOT1(slot_nb_inplace_floor_divide, "__ifloordiv__", PyObject *)
SLOT1(slot_nb_inplace_true_divide, "__itruediv__", PyObject *)
static PyObject *
slot_tp_repr(PyObject *self)
@ -6184,7 +6153,7 @@ slot_tp_call(PyObject *self, PyObject *args, PyObject *kwds)
static PyObject *
slot_tp_getattro(PyObject *self, PyObject *name)
{
return call_method(self, &PyId___getattribute__, "(O)", name);
return call_method(self, &PyId___getattribute__, name, NULL);
}
static PyObject *
@ -6256,9 +6225,9 @@ slot_tp_setattro(PyObject *self, PyObject *name, PyObject *value)
_Py_IDENTIFIER(__setattr__);
if (value == NULL)
res = call_method(self, &PyId___delattr__, "(O)", name);
res = call_method(self, &PyId___delattr__, name, NULL);
else
res = call_method(self, &PyId___setattr__, "(OO)", name, value);
res = call_method(self, &PyId___setattr__, name, value, NULL);
if (res == NULL)
return -1;
Py_DECREF(res);
@ -6359,9 +6328,9 @@ slot_tp_descr_set(PyObject *self, PyObject *target, PyObject *value)
_Py_IDENTIFIER(__set__);
if (value == NULL)
res = call_method(self, &PyId___delete__, "(O)", target);
res = call_method(self, &PyId___delete__, target, NULL);
else
res = call_method(self, &PyId___set__, "(OO)", target, value);
res = call_method(self, &PyId___set__, target, value, NULL);
if (res == NULL)
return -1;
Py_DECREF(res);