sigCHLD signal handling (Was: Re: pipes? threadWaitRead?)

[Simon Marlow]

> The fine points of Unix signal semantics have always been somewhat
> mysterious to me.  However, after digging around in man pages 
> for a while,
> I have a theory as to what's going "wrong"...

Yes, your diagnosis looks very plausible.

The right way, I believe, to handle this in your signal handler is to
call getAnyProcessStatus repeatedly until it doesn't return any more
children (not forgetting to use the non-blocking version, ie. the first
arg should be False).  Does that help?

Cheers,
	Simon