how can a child thread notify a parent thread its status?

[Piet van Oostrum]

>>>>> davidj411 <davidj411 at gmail.com> (d) wrote:

>d> could i see an example of this maybe?

queue is a shared Queue instance.

The parent puts the work in the queue with queue.put(work_object).
After all work has been put in the queue it puts a sentinel

	queue.put(None)

Each child thread (consumer) has a loop getting things out of the queue:

while True:
	work = queue.get()
	if work is None: break
	#do real stuff using work

queue.put(None) #put back the sentinel for other worker threads.

#finish

(Thanks to Dennis Lee Bieber)

Instead of None you can also create a special sentinel object and use that.
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://pietvanoostrum.com [PGP 8DAE142BE17999C4]
Private email: piet at vanoostrum.org