| 56 | |
| 57 | |
| 58 | def _atexit_callback() -> None: |
| 59 | for loop in _selector_loops: |
| 60 | with loop._select_cond: |
| 61 | loop._closing_selector = True |
| 62 | loop._select_cond.notify() |
| 63 | try: |
| 64 | loop._waker_w.send(b"a") |
| 65 | except BlockingIOError: |
| 66 | pass |
| 67 | # If we don't join our (daemon) thread here, we may get a deadlock |
| 68 | # during interpreter shutdown. I don't really understand why. This |
| 69 | # deadlock happens every time in CI (both travis and appveyor) but |
| 70 | # I've never been able to reproduce locally. |
| 71 | loop._thread.join() |
| 72 | _selector_loops.clear() |
| 73 | |
| 74 | |
| 75 | atexit.register(_atexit_callback) |