#!/usr/bin/python

import os, sys, threading, time

class ThreadStuff(threading.Thread):
  def __init(self):
    print "ThreadStuff: init"
    threading.Thread.__init__(self)

  def start_doing_stuff(self):
    self.start()

  def run(self):
    print "ThreadStuff: running (rlock = %s)" % global_rlock

    global_rlock.acquire()
    print "ThreadStuff: I OWN THE LOCK"
    time.sleep(5)
    global_rlock.release()
    print "ThreadStuff: dropped it.  Sleeping forever"
    time.sleep(86400)

# ---

global_rlock = threading.RLock(verbose=True)

ts = ThreadStuff()
ts.start()

time.sleep(1)
print "forking"
pid = os.fork()
if pid:
  print "parent: running (rlock = %s)" % global_rlock
else:
  print "child: running (rlock = %s) getting the lock..." % global_rlock
  global_rlock.acquire()
  print "child: got the lock"
  sys.exit(0)

time.sleep(10)