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From: scjones@sdrc.UUCP (Larry Jones)
Newsgroups: comp.unix.wizards
Subject: Re: problems with async. I/O on streams
Message-ID: <811@sdrc.UUCP>
Date: 18 Sep 89 22:37:01 GMT
References: <27197@shemp.CS.UCLA.EDU>
Organization: Structural Dynamics Research Corp., Cincinnati
Lines: 22

In article <27197@shemp.CS.UCLA.EDU>, arman@oahu.cs.ucla.edu (Arman Bostani) writes:
> I have been trying to get asynchronous I/O with streams working on
> sys-V to no avail. I have written a small program doing async. I/O
> with streams that works perfectly fine on a Sun-3 running 4.0.3. The
> program works by performing an I_SETSIG ioctl operation on stdin.
> 
> [...]
> 
> Has anyone seen this problem before?
> Is it possible at all to do async. I/O on ttys?
> If so, how does one go about it?

Aha, there's the problem!  ttys are not stream devices in Sys
V.3, so stream operations naturally don't work on them.  This is
supposed to be fixed in Release 4, I believe.
----
Larry Jones                         UUCP: uunet!sdrc!scjones
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