Path: utzoo!attcan!uunet!virtech!cpcahil
From: cpcahil@virtech.uucp (Conor P. Cahill)
Newsgroups: comp.unix.wizards
Subject: Re: But I don't wanna do non-blocking I/O...
Message-ID: <1990Jun14.124906.18547@virtech.uucp>
Date: 14 Jun 90 12:49:06 GMT
References: <397@minya.UUCP> <1990Jun12.203245.5804@virtech.uucp> <407@minya.UUCP>
Reply-To: cpcahil@virtech.UUCP (Conor P. Cahill)
Organization: Virtual Technologies Inc., Sterling VA
Lines: 23

In article <407@minya.UUCP> jc@minya.UUCP (John Chambers) writes:
>
>Anyhow, that did solve the problem.  It also meant that I expanded my
>#defines to include SYS5_2 and SYS5_3.  In any case, it looks like one 
>more thing to remember when trying to write portable code.  It ain't 
>getting easier.  I can hardly wait for the Sys/5.4 release.  By then
>maybe I'll be porting stuff to Mach, and going totally insane.

One suggestion:

Do not add a #define for SYS5_anything.  This gets you into all kinds of
problems when you put your stuff on hybrid systems (like 5.4).  Instead
use something like:

#define HAS_NDELAY_READS

which is the explicit capability you are checking about.


-- 
Conor P. Cahill            (703)430-9247        Virtual Technologies, Inc.,
uunet!virtech!cpcahil                           46030 Manekin Plaza, Suite 160
                                                Sterling, VA 22170