K900 a874235dff nixos/lib/test-driver: clean up threads correctly ... The current implementation just forks off a thread to read QEMU's stdout and lets it exist forever. This, however, makes the interpreter shutdown racy, as the thread could still be running and writing out buffered stdout when the main thread exits (and since it's using the low level API, the worker thread does not get cleaned up by the atexit hooks installed by `threading`, either). So, instead of doing that, let's create a real `threading.Thread` object, and also explicitly `join` it along with the other stuff when cleaning up.		2021-10-19 16:23:51 +03:00
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test-driver.py	nixos/lib/test-driver: clean up threads correctly	2021-10-19 16:23:51 +03:00