SPUG: kill or exit multiple processes

[Meryll Larkin]

8/27/02

Now I'm confused because I assumed that if Program B spawned Program C
that Program B's PID (process ID) would be the PPID (parent process ID)
to Program C.

I also thought that if Program B was killed, that killing the parent
would kill the child (Program C).

In which case, wouldn't it be easier to just have Program B check for a
condition (created by Program A - like the existance of a file or
something) after Program C completed and exit itself if that condition
was true? 

Or am I missing something here?  If so, please correct me!

Meryll Larkin


--- "Baker, Stephen M" <stephen.m.baker at intel.com> wrote:
> 
> 
> I'm looking for the correct exit command for the following situation:
> 
> Program A coninuously checks environment conditions and runs Program
> B as
> necessary.
> 
> Each time Program B runs, it spawns multiple instances of program C.
> 
> Eventually, Programs B and C complete execution, modify the
> environment, and
> Program A again notices changes and restarts the cycle.
> 
> I have the program catching signal interrupts for exit purposes, but
> I don't
> know whether to go with a kill 9, an exit(?), or what.
> 
> What I want to do when exit is called is kill all instances of
> programs A
> and B, but not any occurances of program C.
> 
> 
> 
> 
> Stephen Baker				Office:	253.371.4188
> Intel Corporation				Mobile:	253.678.0556 
> Intel Architecture Group			Email:
> stephen.m.baker at intel.com
> 
> Mail Stop DP3-307	2800 Center Dr.		Dupont, WA 98327
> 
>
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> the 
> author(s), and are not on behalf of Intel unless specifically stated.
>
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> 
> 
> 
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