https://github.com/python/cpython/commit/eb20a7d12c4b2ab7931074843f8602a48b5b07bd
commit: eb20a7d12c4b2ab7931074843f8602a48b5b07bd
branch: main
author: Donghee Na <[email protected]>
committer: corona10 <[email protected]>
date: 2024-04-26T00:13:57+09:00
summary:
gh-112069: Do not require lock if the set has never been exposed. (gh-118069)
files:
M Objects/setobject.c
diff --git a/Objects/setobject.c b/Objects/setobject.c
index 0d88f4ff922d24..19975e3d4d18e2 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -2333,6 +2333,13 @@ set_init(PySetObject *self, PyObject *args, PyObject
*kwds)
if (!PyArg_UnpackTuple(args, Py_TYPE(self)->tp_name, 0, 1, &iterable))
return -1;
+ if (Py_REFCNT(self) == 1 && self->fill == 0) {
+ self->hash = -1;
+ if (iterable == NULL) {
+ return 0;
+ }
+ return set_update_local(self, iterable);
+ }
Py_BEGIN_CRITICAL_SECTION(self);
if (self->fill)
set_clear_internal(self);
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