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From: alan@george.Jpl.Nasa.Gov (Alan S. Mazer)
Newsgroups: comp.unix.questions
Subject: Re: Check input buffer in C
Message-ID: <1990May29.200600.6586@elroy.jpl.nasa.gov>
Date: 29 May 90 20:06:00 GMT
Article-I.D.: elroy.1990May29.200600.6586
References: <1990May26.144958.4395@aucs.uucp>
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In article <1990May26.144958.4395@aucs.uucp>, 852028e@aucs.uucp (Amari  M.  Elammari) writes:
>  Is there a UNIX C (sun4 C) function that checks if the input buffer 
>  is empty???

Under 4.2 there was an FIONREAD ioctl -- not sure if this is still available.
That returned the number of characters waiting to be read.  You can also
use select() to find out if something is there.

-- Alan				# "But seriously, what could go wrong?"
   ..!ames!elroy!alan
   alan@elroy.jpl.nasa.gov