[Python-checkins] gh-100649: Update native_thread_id after fork (gh-100650)

[corona10]

https://github.com/python/cpython/commit/d52d4942cfdd52a50f88b87b1ff2a67375dbcf47
commit: d52d4942cfdd52a50f88b87b1ff2a67375dbcf47
branch: main
author: Gabriele N. Tornetta <P403n1x87 at users.noreply.github.com>
committer: corona10 <donghee.na92 at gmail.com>
date: 2023-01-01T23:20:38+09:00
summary:

gh-100649: Update native_thread_id after fork (gh-100650)

Update native_thread_id after fork

files:
A Misc/NEWS.d/next/Core and Builtins/2022-12-31-23-32-09.gh-issue-100649.C0fY4S.rst
M Modules/posixmodule.c

diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-12-31-23-32-09.gh-issue-100649.C0fY4S.rst b/Misc/NEWS.d/next/Core and Builtins/2022-12-31-23-32-09.gh-issue-100649.C0fY4S.rst
new file mode 100644
index 000000000000..7ee929ad09fb
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-12-31-23-32-09.gh-issue-100649.C0fY4S.rst	
@@ -0,0 +1 @@
+Update the native_thread_id field of PyThreadState after fork.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 1d9a33ab7bc9..0d4c179368ce 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -595,6 +595,10 @@ PyOS_AfterFork_Child(void)
     PyThreadState *tstate = _PyThreadState_GET();
     _Py_EnsureTstateNotNULL(tstate);
 
+#ifdef PY_HAVE_THREAD_NATIVE_ID
+    tstate->native_thread_id = PyThread_get_thread_native_id();
+#endif
+
     status = _PyEval_ReInitThreads(tstate);
     if (_PyStatus_EXCEPTION(status)) {
         goto fatal_error;