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import_name() now uses fast call

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Issue #27128: import_name() now calls _PyObject_FastCall() to avoid the
creation of a temporary tuple.
This commit is contained in:
Victor Stinner 2016-08-20 00:44:42 +02:00
parent 9def0901e2
commit df142fdc4b
1 changed files with 9 additions and 13 deletions
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22
Python/ceval.c
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@ -5247,7 +5247,8 @@ static PyObject *
import_name(PyFrameObject *f, PyObject *name, PyObject *fromlist, PyObject *level) import_name(PyFrameObject *f, PyObject *name, PyObject *fromlist, PyObject *level)
{ {
_Py_IDENTIFIER(__import__); _Py_IDENTIFIER(__import__);
PyObject *import_func, *args, *res; PyObject *import_func, *res;
PyObject* stack[5];
import_func = _PyDict_GetItemId(f->f_builtins, &PyId___import__); import_func = _PyDict_GetItemId(f->f_builtins, &PyId___import__);
if (import_func == NULL) { if (import_func == NULL) {
@ -5271,18 +5272,13 @@ import_name(PyFrameObject *f, PyObject *name, PyObject *fromlist, PyObject *leve
} }
Py_INCREF(import_func); Py_INCREF(import_func);
args = PyTuple_Pack(5,
name, stack[0] = name;
f->f_globals, stack[1] = f->f_globals;
f->f_locals == NULL ? Py_None : f->f_locals, stack[2] = f->f_locals == NULL ? Py_None : f->f_locals;
fromlist, stack[3] = fromlist;
level); stack[4] = level;
if (args == NULL) { res = _PyObject_FastCall(import_func, stack, 5, NULL);
Py_DECREF(import_func);
return NULL;
}
res = PyEval_CallObject(import_func, args);
Py_DECREF(args);
Py_DECREF(import_func); Py_DECREF(import_func);
return res; return res;
} }