On Fri, 12 Nov 2010 13:40:56 -0600, Kirk Wolf wrote: > >Sorry, I meant that the utility itself only needs one process, but it still >must (local) spawn a "logon shell" process. >The utility doesn't need multiple threads or processes to handle I/O >redirection to the shell. > That utility is what I regard as an "ancillary process", since it uses spawn() rather than exec().
You appear to be an expert, and I didn't learn from a quick glance at doc: Does select() poll, or is it event driven? (Might be implementation dependent, or contingent on functions used.) I think WJS once remarked on MVS-OE that z/OS provides alternatives more suitable than select(). -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html