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From: jco@crane.cis.ufl.edu (John C. Orthoefer)
Newsgroups: comp.sys.hp
Subject: usleep [Re: BSD and HPUX, The Questions Continue...]
Message-ID: <JCO.91May20105605@crane.cis.ufl.edu>
Date: 20 May 91 14:56:05 GMT
References: <1991May2.202710.5152@odin.diku.dk> <67870026@hpcupt1.cup.hp.com>
	<28356926.3abe@petunia.CalPoly.EDU>
	<1991May20.122602.6838@minyos.xx.rmit.oz.au>
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In-reply-to: s900387@minyos.xx.rmit.oz.au's message of 20 May 91 12:26:02 GMT


Speaking of usleep, I need one and got desperate enough to write one, for my
program that blinks the leds on the front panel of the 9k/400's.  (If you
want my new led blinking program send me some e-mail.)

later
jco

ps. I'm looking for a job.

/* Program: usleep.c
** Author: John C. Orthoefer <jco@ufl.edu>
** Last edited: Wed May 15 09:09:43 1991 by jco (Dumpmaster John) on crane
**
**  Works like but in no way is usleep() from SunOS.
*/

#include <time.h>
#include <signal.h>

extern int usleep_rtn();

usleep(useconds)
long useconds;
{
   struct itimerval rttimer;
   struct itimerval old_rttimer;
   
   rttimer.it_value.tv_sec     = 0;
   rttimer.it_value.tv_usec    = useconds;
   rttimer.it_interval.tv_sec  = 0;
   rttimer.it_interval.tv_usec = 0;

   signal(SIGALRM, usleep_rtn);

   if (setitimer (ITIMER_REAL, &rttimer, &old_rttimer)) {
      perror("usleep");
      exit(1);
   }

   pause();
}

usleep_rtn() 
{
}
--
"BSD the strongest Operating System avaible today without a prescription."
John C. Orthoefer	Internet: jco@smuggler.cis.ufl.edu
University of Florida	Floyd Mailing List: eclipse-request@reef.cis.ufl.edu
CIS Department          >>>>>>New Address<<<<<<-------------^^^^