usr.bin/talk/msgs.c

   1 /*      $NetBSD: msgs.c,v 1.5 2003/08/07 11:16:05 agc Exp $     */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)msgs.c      8.1 (Berkeley) 6/6/93";
  36 #endif
  37 __RCSID("$NetBSD: msgs.c,v 1.5 2003/08/07 11:16:05 agc Exp $");
  38 #endif /* not lint */
  39
  40 /*
  41  * A package to display what is happening every MSG_INTERVAL seconds
  42  * if we are slow connecting.
  43  */
  44
  45 #include <sys/time.h>
  46 #include <signal.h>
  47 #include <stdio.h>
  48 #include "talk.h"
  49
  50 #define MSG_INTERVAL 4
  51
  52 const char *current_state;
  53 int     current_line = 0;
  54
  55 void
  56 disp_msg(dummy)
  57         int dummy;
  58 {
  59         message(current_state);
  60 }
  61
  62 void
  63 start_msgs()
  64 {
  65         struct itimerval itimer;
  66
  67         message(current_state);
  68         signal(SIGALRM, disp_msg);
  69         itimer.it_value.tv_sec = itimer.it_interval.tv_sec = MSG_INTERVAL;
  70         itimer.it_value.tv_usec = itimer.it_interval.tv_usec = 0;
  71         setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
  72 }
  73
  74 void
  75 end_msgs()
  76 {
  77         struct itimerval itimer;
  78
  79         timerclear(&itimer.it_value);
  80         timerclear(&itimer.it_interval);
  81         setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
  82         signal(SIGALRM, SIG_DFL);
  83 }