Thanks, Bert.

Bert Freudenberg wrote:
>> 2. I have an object with a process "in" it. How can I make sure  that 
>> process is terminated when there are no more references to  that object?
> 
> 
> Terminate the process when you release the last reference to the  
> object. Like, send #release to your object before setting the ref to  nil.
> 
> Only as a last resort, use finalization.

I thought of a better option today: Create a "PollingService" singleton. 
  The process I needed was just meant to slowly poll something.

Rather than doing "[[self doSomething] repeat ] fork", I could ask the 
PollingService to poll me on a regular basis. The polling service would 
have something like:

PollingService>>pollObject: n
	| o |
	o := myWeakArray at: n.
	[ o isNil ] whileFalse: [ o poll. o:= myWeakArray at: n. ].

So that when the object is garbage collected, the thread would also stop 
iterating. A very useful pattern!

This could maybe even be done on the class side of that object.

I hope the small amount of time between loop iterations is enough to get 
the GC to make the weak reference nil.

Michael.