236 static PyThread_type_lock keymutex = NULL;  variable
266     if (!keymutex)  in find_key()
268     PyThread_acquire_lock(keymutex, 1);  in find_key()
296     PyThread_release_lock(keymutex);  in find_key()
310     if (keymutex == NULL)  in PyThread_create_key()
311         keymutex = PyThread_allocate_lock();  in PyThread_create_key()
321     PyThread_acquire_lock(keymutex, 1);  in PyThread_delete_key()
332     PyThread_release_lock(keymutex);  in PyThread_delete_key()
375     PyThread_acquire_lock(keymutex, 1);  in PyThread_delete_key_value()
387     PyThread_release_lock(keymutex);  in PyThread_delete_key_value()
401     if (!keymutex)  in PyThread_ReInitTLS()
406     keymutex = PyThread_allocate_lock();  in PyThread_ReInitTLS()