5 Jan
2014
5 Jan
'14
4:14 p.m.
I bet a quarter you can't do it. You'd need access to the process state - whether it's blocking for I/O and whether one of the units in the input set is 0 ("stdin".) Even if you could get that? you'd have to poll for it, which would be hideous. That's the UNIX I/O model. I've always found it a little annoying, because I could do this with the VMS `mailbox' device, analogous to UNIX pipes - in various ways a more sophisticated interprocess communication system than UNIX's. Donn