newbie question - killing a process

Ned Konz ned at
Sat Jun 30 19:48:51 UTC 2001

On Saturday 30 June 2001 12:35, Rosemary Michelle Simpson wrote:
> How do you kill a process whose objects have gone away?  I created a
> clock process (part of Mark's examples) and then made the mistake of
> quitting without terminating the process.  Now I have an orphan clock that
> wont go away.  I did as he suggested and did:
> 	Smalltalk garbageCollect.
> 	Process allInstances inspect.
> This produced a long array of 34 processes, most of which say "a Process
> in UndefinedObject>>DoIt".  Mark says to 'find the one you want (probably
> near the bottom of the list) and send it terminate."
> My question is:
> How do I select a receiver from this array to terminate?

Easiest way is to use the Process Browser (World menu/debug/open Process 
Browser). If they're still around, something's hanging on to them. Are 
you assigning the Process to a variable (you must be or it would be GC'd when 
it stopped)? You need to find (and delete) whatever's hanging on to the 
variables that are hanging on to the Processes.

Just select one of your defunct processes in the Process Browser, kill it 
(using the context menu), then see if it goes away. If not, pop up the 
context menu again, and choose "chase pointers". You'll see what's hanging on 
to that Process. Then just nil out the variable, re-collect garbage, and it 
should be gone.

I added that when I made the Process Browser because this was a common 
problem for me.

Ned Konz
currently: Stanwood, WA
email:     ned at

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