239 static PyThread_type_lock keymutex = NULL;  variable
269     if (!keymutex)  in find_key()
271     PyThread_acquire_lock(keymutex, 1);  in find_key()
299     PyThread_release_lock(keymutex);  in find_key()
313     if (keymutex == NULL)  in PyThread_create_key()
314         keymutex = PyThread_allocate_lock();  in PyThread_create_key()
324     PyThread_acquire_lock(keymutex, 1);  in PyThread_delete_key()
335     PyThread_release_lock(keymutex);  in PyThread_delete_key()
378     PyThread_acquire_lock(keymutex, 1);  in PyThread_delete_key_value()
390     PyThread_release_lock(keymutex);  in PyThread_delete_key_value()
404     if (!keymutex)  in PyThread_ReInitTLS()
409     keymutex = PyThread_allocate_lock();  in PyThread_ReInitTLS()