[Gllug] pipes and C++

[Adrian McMenamin]

On Mon, 2010-09-13 at 09:09 +1200, David L Neil wrote:
> Adrian McMenamin wrote:
> > I have been chaining three C++ programs I have written together -
> > working on the principle that each should do one thing - so
> > A - generates some xml
> > B - processes said xml
> > C - outputs graphics
> > A | B | C
> > All works well - but now I want to have them repeat this every few
> > seconds ie for every three seconds
> > A --r 3 | B --r 3 | C --r 3
> > But while it is easy to get the first program to churn out the xml I
> > cannot work out how to get the second element in the chain to recognise
> > the end of the output - (I am guessing that previously B didn't really
> > start until A was dead?)
> 
> create ABC.sh as
> A | B | C
> 
> now ABC.sh --r 3   ???

The final one of the applications is a heavy weight X11 thing and I want
it to redraw the display rather than restart

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