Python GLib.MainLoop.run in a process

Question

In a standalone Python script, I have a functioning GLib mainloop.

# myloop.py

import gobject as GLib

def main():
    mainloop = GLib.MainLoop()
    # do some DBus related stuffs
    mainloop.run()

if __name__ == '__main__':
    main()

I now need to run this from another Python project,
where multiple processes are used to implement different features.

from multiprocessing import Process
from myloop import main as myloop_main

def do something():
    # do somethng else

if __name__ == '__main__':
    something_proc = Process(target = do_something)
    myloop_proc = Process(target = myloop_main)
    something_proc.start()
    myloop_proc.start()
    something_proc.join()
    myloop_proc.join()

This runs without error, but the mainloop is not really running
and the feature implemented in the mainloop is not working.
How to run the GLib's mainloop in a process?