test_script.py

import kaboom
import stackless

from kaboom import *

# This implements the C++ interface that was wrapped for Python.
# The wrapper is called first, which gets the override for ReceiveExplosion.
# In there is code to ensure we have the GIL, and to release it afterwards.
# We're setting a stop variable kind of like I originally was doing in the more
# complicated code.  I have found it doesn't actually matter, but should work
# when all is done.
class PoorGuy(ITimeBombCallback):
    def __init__(self, stop_var):
        ITimeBombCallback.__init__(self)    # Very important for subclasses in Boost.Python
        self.stop_var = stop_var

    def ReceiveExplosion(self):
        print "Got explosion"
        self.stop_var = True

stop_var = False
poorGuy = PoorGuy(stop_var)
bomb = TimeBomb(poorGuy)
bomb.Go()

# Busy loop
while not stop_var:
    stackless.schedule()

bomb.Join()