sigterm_event.py

import faulthandler
import multiprocessing
import os
import signal


def run_buggy():
    shutdown_event = multiprocessing.Event()

    def sigterm_handler(_signo, _stack_frame):
        try:
            print(f'sigterm_handler running')
            shutdown_event.set()
        finally:
            print(f'sigterm_handler done')

    signal.signal(signal.SIGTERM, sigterm_handler)
    signal.signal(signal.SIGINT, sigterm_handler)
    faulthandler.register(signal.SIGUSR1)

    print(f'Running process with PID {os.getpid()}')
    print(f'Dump the stack by executing:')
    print(f'kill -SIGUSR1 {os.getpid()}')
    print(f'Try to kill this process with CTRL-C or kill {os.getpid()} ...')
    while not shutdown_event.is_set():
        pass

if __name__ == '__main__':
    run_buggy()