diff --git a/Programs/_testembed.c b/Programs/_testembed.c
index 88936bbc699c30..28c004c3c5ac2c 100644
--- a/Programs/_testembed.c
+++ b/Programs/_testembed.c
@@ -379,9 +379,9 @@ static int test_pre_initialization_sys_options(void)
/* bpo-20891: Avoid race condition when initialising the GIL */
-static void bpo20891_thread(void *lockp)
+static void bpo20891_thread(void *eventp)
{
- PyThread_type_lock lock = *((PyThread_type_lock*)lockp);
+ PyEvent *event = (PyEvent *)eventp;
PyGILState_STATE state = PyGILState_Ensure();
if (!PyGILState_Check()) {
@@ -390,8 +390,7 @@ static void bpo20891_thread(void *lockp)
}
PyGILState_Release(state);
-
- PyThread_release_lock(lock);
+ _PyEvent_Notify(event);
}
static int test_bpo20891(void)
@@ -401,27 +400,16 @@ static int test_bpo20891(void)
/* bpo-20891: Calling PyGILState_Ensure in a non-Python thread must not
crash. */
- PyThread_type_lock lock = PyThread_allocate_lock();
- if (!lock) {
- error("PyThread_allocate_lock failed!");
- return 1;
- }
-
+ PyEvent event = {0};
_testembed_initialize();
- unsigned long thrd = PyThread_start_new_thread(bpo20891_thread, &lock);
+ unsigned long thrd = PyThread_start_new_thread(bpo20891_thread, &event);
if (thrd == PYTHREAD_INVALID_THREAD_ID) {
error("PyThread_start_new_thread failed!");
return 1;
}
- PyThread_acquire_lock(lock, WAIT_LOCK);
- Py_BEGIN_ALLOW_THREADS
- /* wait until the thread exit */
- PyThread_acquire_lock(lock, WAIT_LOCK);
- Py_END_ALLOW_THREADS
-
- PyThread_free_lock(lock);
+ PyEvent_Wait(&event);
Py_Finalize();
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