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""" | |
A simple watchdog for long running processes which may stall for some reason or | |
another. | |
If the main thread hasn't logged progress (by updating | |
``self.last_progress_time``) in WATCHDOG_HARD_KILL_TIMEOUT, the watchdog | |
thread will log an error containing the stack trace of all currently running | |
threads then use ``kill -9`` to kill the main process. | |
Assumes that a process monitor like supervisor or systemd will then restart |
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