# Copyright (c) 2017-2020. The SimGrid Team. All rights reserved.
#
# This program is free software you can redistribute it and/or modify it
# under the terms of the license (GNU LGPL) which comes with this package.

from simgrid import Actor, Engine, Host, this_actor
import sys


def worker():
    """The worker process, working for a while before leaving"""
    this_actor.info("Let's do some work (for 10 sec on Boivin).")
    this_actor.execute(980.95e6)

    this_actor.info("I'm done now. I leave even if it makes the daemon die.")


def my_daemon():
    """The daemon, displaying a message every 3 seconds until all other processes stop"""
    Actor.self().daemonize()

    while True:
        this_actor.info("Hello from the infinite loop")
        this_actor.sleep_for(3.0)

    this_actor.info(
        "I will never reach that point: daemons are killed when regular processes are done")


if __name__ == '__main__':
    e = Engine(sys.argv)
    if len(sys.argv) < 2:
        raise AssertionError(
            "Usage: actor-daemon.py platform_file [other parameters]")

    e.load_platform(sys.argv[1])
    Actor.create("worker", Host.by_name("Boivin"), worker)
    Actor.create("daemon", Host.by_name("Tremblay"), my_daemon)

    e.run()
