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child process state

 
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# 8  
Old 12-23-2007
(c) I ignored semaphores for this threads as we're looking at simple shell solutions.

(d) That is a combination of (a) and (b).

(e) this is what we were trying to avoid.

(f) I avoided mentioning signals as they are non trivial in a shell program.

... et bonne annee!
Last edited by porter; 12-23-2007 at 03:17 PM..
# 9  
Old 12-24-2007
Quote:
Originally Posted by porter
You can't use sleep to reliably synchronise between processes, you need to use events and state. In UNIX the the best two events are

(a) a process terminating yielding an exit code

(b) reading of a stream
Exactly right ! Smilie

But since its a scripting problem I presented a much simpler solution to implement and use.
 
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