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gh-112087: Make __sizeof__ and listiter_{len, next} to be threadsafe #114843

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Merged
corona10 merged 13 commits into from
Feb 14, 2024
Merged

gh-112087: Make __sizeof__ and listiter_{len, next} to be threadsafe #114843

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gh-112087: Make __sizeof__ and listiter_{len, next} to be threadsafe
corona10 Feb 1, 2024
e8be089
Fix typo
corona10 Feb 1, 2024
777c9d5
nit
corona10 Feb 1, 2024
671a1bc
Address code review
corona10 Feb 3, 2024
61362aa
Merge remote-tracking branch 'upstream/main' into gh-112087-part3
corona10 Feb 7, 2024
a93faf6
Address code review
corona10 Feb 8, 2024
44f2022
Address code review
corona10 Feb 9, 2024
79989db
nit
corona10 Feb 9, 2024
f4526f9
fix
corona10 Feb 9, 2024
a13beed
Address code review
corona10 Feb 14, 2024
bec617a
Address code review
corona10 Feb 14, 2024
6e170cc
Address code review
corona10 Feb 14, 2024
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corona10 Feb 14, 2024
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Address code review
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@corona10
corona10 committed Feb 14, 2024
commit 6e170cc130ce662951ce4216a15aaa21ac9fc226
8 changes: 4 additions & 4 deletions Objects/listobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3393,19 +3393,19 @@ listiter_next(PyObject *self)
{
_PyListIterObject *it = (_PyListIterObject *)self;
Py_ssize_t index = LOAD_SSIZE(it->it_index);
if (it->it_seq == NULL || index < 0) {
if (index < 0) {
return NULL;
}

PyObject *item = list_get_item_ref(it->it_seq, index);
if (item == NULL) {
// out-of-bounds
STORE_SSIZE(it->it_index, -1);
#ifndef Py_GIL_DISABLED
PyListObject *seq = it->it_seq;
it->it_seq = NULL;
Py_DECREF(seq);
#endif
STORE_SSIZE(it->it_index, -1);
return NULL;
}
STORE_SSIZE(it->it_index, index + 1);
Expand Down Expand Up @@ -3551,19 +3551,19 @@ listreviter_next(PyObject *self)
assert(PyList_Check(seq));

Py_ssize_t index = LOAD_SSIZE(it->it_index);
if (it->it_seq == NULL || index < 0) {
if (index < 0) {
return NULL;
}
PyObject *item = list_get_item_ref(seq, index);
if (item != NULL) {
STORE_SSIZE(it->it_index, index - 1);
return item;
}
STORE_SSIZE(it->it_index, -1);
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#ifndef Py_GIL_DISABLED
it->it_seq = NULL;
Py_DECREF(seq);
#endif
STORE_SSIZE(it->it_index, -1);
return NULL;
}

Expand Down