Path: utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!samsung!xylogics!world!madd
From: madd@world.std.com (jim frost)
Newsgroups: comp.unix.questions
Subject: Re: Intro to sockets?
Message-ID: <1990Mar25.223859.15610@world.std.com>
Date: 25 Mar 90 22:38:59 GMT
References: <142407@<1990Mar14> <22000006@ux1.cso.uiuc.edu>
Organization: Saber Software
Lines: 29

Thanks for reposting my primer, but please note that there is a
serious bug in the fireman() function.  It's defined in the 11/22/89
version as:

  void fireman()
  { union wait wstatus;

    while(wait3(&wstatus,WNOHANG,NULL) >= 0);
  }

It should be:

  void fireman()
  { union wait wstatus;

    while(wait3(&wstatus,WNOHANG,NULL) > 0);
  }

This minor difference results in some pretty dramatic hanging on your
server's part in some instances :-).  I have a newer version of the
tutorial available (Feb something-or-other 1990) which corrects this
bug (there may be other differences, I can't remember).  Please send
requests for the update to jimf@saber.com (..!harvard!saber!jimf).

Happy hacking,

jim frost
saber software
jimf@saber.com