Stowage/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2026-02-21 22:50:55 +00:00
Code Issues Projects Releases Packages Wiki Activity

gh-141563: make PyDateTime_IMPORT thread-safe (#144210)

Browse source
This commit is contained in:
Kumar Aditya 2026-02-09 18:50:35 +05:30 • committed by GitHub
parent d99f3fc474
commit dd30f16ac0
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 18 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

19
Include/datetime.h
View file

@ -196,8 +196,23 @@ typedef struct {
/* Define global variable for the C API and a macro for setting it. */
static PyDateTime_CAPI *PyDateTimeAPI = NULL;
#define PyDateTime_IMPORT \
PyDateTimeAPI = (PyDateTime_CAPI *)PyCapsule_Import(PyDateTime_CAPSULE_NAME, 0)
static inline PyDateTime_CAPI *
_PyDateTime_IMPORT(void) {
PyDateTime_CAPI *val = _Py_atomic_load_ptr(&PyDateTimeAPI);
if (val == NULL) {
PyDateTime_CAPI *capi = (PyDateTime_CAPI *)PyCapsule_Import(
PyDateTime_CAPSULE_NAME, 0);
if (capi != NULL) {
/* if the compare exchange fails then in that case
another thread would have initialized it */
_Py_atomic_compare_exchange_ptr(&PyDateTimeAPI, &val, (void *)capi);
return capi;
}
}
return val;
}
#define PyDateTime_IMPORT _PyDateTime_IMPORT()
/* Macro for access to the UTC singleton */
#define PyDateTime_TimeZone_UTC PyDateTimeAPI->TimeZone_UTC

1
Misc/NEWS.d/next/Core_and_Builtins/2026-02-02-17-07-34.gh-issue-141563.GheXjr.rst Normal file
View file

@ -0,0 +1 @@
Fix thread safety of :c:macro:`! PyDateTime_IMPORT`.