[Python-checkins] cpython: Add an exact type match fast path for deque_copy().
raymond.hettinger
python-checkins at python.org
Mon Sep 14 01:27:07 CEST 2015
https://hg.python.org/cpython/rev/9296469dcaed
changeset: 97998:9296469dcaed
user: Raymond Hettinger <python at rcn.com>
date: Sun Sep 13 19:27:01 2015 -0400
summary:
Add an exact type match fast path for deque_copy().
files:
Modules/_collectionsmodule.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
--- a/Modules/_collectionsmodule.c
+++ b/Modules/_collectionsmodule.c
@@ -1205,6 +1205,22 @@
static PyObject *
deque_copy(PyObject *deque)
{
+ if (Py_TYPE(deque) == &deque_type) {
+ dequeobject *new_deque;
+ PyObject *rv;
+
+ new_deque = (dequeobject *)deque_new(&deque_type, (PyObject *)NULL, (PyObject *)NULL);
+ if (new_deque == NULL)
+ return NULL;
+ new_deque->maxlen = ((dequeobject *)deque)->maxlen;
+ rv = deque_extend(new_deque, deque);
+ if (rv != NULL) {
+ Py_DECREF(rv);
+ return (PyObject *)new_deque;
+ }
+ Py_DECREF(new_deque);
+ return NULL;
+ }
if (((dequeobject *)deque)->maxlen == -1)
return PyObject_CallFunction((PyObject *)(Py_TYPE(deque)), "O", deque, NULL);
else
--
Repository URL: https://hg.python.org/cpython
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