Re: Print plot error

[Ben Abbott]

On Aug 24, 2009, at 9:26 PM, Rob Mahurin wrote:

> On Aug 24, 2009, at 9:14 PM, Ben Abbott wrote:
> > Sorry for my lack ... but will waitpid kill non-zombie children?
> >
> > There is an active gnuplot for each figure window. Would wiatid  
> > terminate those children as well?
>
> No, see the man page for the wait4() and waitpid() system calls.
>
> waitpid(-1,0) will hang if there are children still running, but
> waitpid(-1,WNOHANG) will just return zero.
>
> If there are not children running, waitpid(-1,anything) should just  
> return -1.
>
> Don't believe me, test it.
>
> Rob

Sorry, I don't mean to question you, only trying to learn about  
something I have no prior experience with.

If neither of you get to it, I'll try to put together a quck changeset  
tomorrow (attributed to you and Dmitri).

Ben