Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 (Tek) 9/26/83; site azure.UUCP
Path: utzoo!watmath!clyde!floyd!harpo!seismo!hao!hplabs!tektronix!teklds!azure!keithr
From: keithr@azure.UUCP (Keith Rule)
Newsgroups: net.micro.cpm
Subject: Re: Aztec CII I/O Redirection (Reposted with new info)
Message-ID: <2640@azure.UUCP>
Date: Mon, 26-Mar-84 12:28:26 EST
Article-I.D.: azure.2640
Posted: Mon Mar 26 12:28:26 1984
Date-Received: Wed, 28-Mar-84 01:13:35 EST
Organization: Tektronix, Beaverton OR
Lines: 104

(Reposting)
 
The problem of slow redirected I/O  in Aztec C is caused  by
I/O  being  unbuffered. This causes each byte of output that
is redirected to a file to be written seperately (Read  sec-
tor, place byte, write sector). No wonder is so slow.
 
The solution I've been using is simply changing  the  unbuf-
fered  I/O  into  buffered I/O. I've also added a few exten-
tions  which  are  "2>"  (redirect  stderr),  "2>>"  (append
stderr) and ">>" (append stdout).
 
To implement the fix find the file called "CROOT.C"  in  the
source   to  your  library.  It  contains  a  function  call
"Croot()".  Replace the while loop that starts  with  "while
(Argc < MAXARGS)" with the following--
 
 
        while (Argc < MAXARGS) {
                while (*cp == ' ' || *cp == '')
                   ++cp;
                if (*cp == NULL)
                   break;
                k = -1;
                switch (*cp) {
                   case '>':
                        if (*(cp+1)=='>') {
                           ++cp;
                           k = 1;
                        } else
                           k = 1;
                        break;
                   case '<':
                        k = 0;
                        break;
                   case '2':
                        if (*(cp+1)) == '>') {
                           ++cp;
                           if (*(cp+1) == '>') {
                              ++cp;
                              k = 5;
                           } else
                              k = 2;
                        }