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| author | Raymond Hettinger <python@rcn.com> | 2003-11-08 11:58:44 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2003-11-08 11:58:44 (GMT) |
| commit | 001f228f369d5c3e9fc28ae7a9815e1317bbe72f (patch) | |
| tree | e52b8b738e2b2e498b988ba7bb73a03f57e78a91 | |
| parent | e21f6066574cfecbf0f5783ae924309a1afba0b0 (diff) | |
| download | cpython-001f228f369d5c3e9fc28ae7a9815e1317bbe72f.zip cpython-001f228f369d5c3e9fc28ae7a9815e1317bbe72f.tar.gz cpython-001f228f369d5c3e9fc28ae7a9815e1317bbe72f.tar.bz2 | |
Improve the reverse list iterator to free memory as soon as the iterator
is exhausted.
| -rw-r--r-- | Objects/listobject.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Objects/listobject.c b/Objects/listobject.c index 7198e34..3782c3b 100644 --- a/Objects/listobject.c +++ b/Objects/listobject.c @@ -2771,7 +2771,7 @@ PyTypeObject PyListIter_Type = { typedef struct { PyObject_HEAD long it_index; - PyListObject *it_seq; + PyListObject *it_seq; /* Set to NULL when iterator is exhausted */ } listreviterobject; PyTypeObject PyListRevIter_Type; @@ -2819,6 +2819,9 @@ listreviter_next(listreviterobject *it) item = PyList_GET_ITEM(it->it_seq, it->it_index); it->it_index--; Py_INCREF(item); + } else if (it->it_seq != NULL) { + Py_DECREF(it->it_seq); + it->it_seq = NULL; } return item; } |