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[3.13] gh-120974: Make _asyncio._leave_task atomic in the free-threaded build (GH-122139) (#122186)

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gh-120974: Make _asyncio._leave_task atomic in the free-threaded build (GH-122139)

* gh-120974: Make _asyncio._leave_task atomic in the free-threaded build

Update `_PyDict_DelItemIf` to allow for an argument to be passed to the
predicate.
(cherry picked from commit a15feded71)

Co-authored-by: Sam Gross <colesbury@gmail.com>
This commit is contained in:
Miss Islington (bot) 2024-07-23 19:30:58 +02:00 • committed by GitHub
parent 214b430faf
commit 77ab53a5f3
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GPG key ID: B5690EEEBB952194
4 changed files with 49 additions and 46 deletions
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13
Modules/_weakref.c
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@ -31,7 +31,7 @@ _weakref_getweakrefcount_impl(PyObject *module, PyObject *object)
static int
is_dead_weakref(PyObject *value)
is_dead_weakref(PyObject *value, void *unused)
{
if (!PyWeakref_Check(value)) {
PyErr_SetString(PyExc_TypeError, "not a weakref");
@ -56,15 +56,8 @@ _weakref__remove_dead_weakref_impl(PyObject *module, PyObject *dct,
PyObject *key)
/*[clinic end generated code: output=d9ff53061fcb875c input=19fc91f257f96a1d]*/
{
if (_PyDict_DelItemIf(dct, key, is_dead_weakref) < 0) {
if (PyErr_ExceptionMatches(PyExc_KeyError))
/* This function is meant to allow safe weak-value dicts
with GC in another thread (see issue #28427), so it's
ok if the key doesn't exist anymore.
*/
PyErr_Clear();
else
return NULL;
if (_PyDict_DelItemIf(dct, key, is_dead_weakref, NULL) < 0) {
return NULL;
}
Py_RETURN_NONE;
}