usr/src/cmd/cmd-inet/usr.bin/talk/msgs.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1994 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
  28 /*        All Rights Reserved   */
  29
  30 /*
  31  * University Copyright- Copyright (c) 1982, 1986, 1988
  32  * The Regents of the University of California
  33  * All Rights Reserved
  34  *
  35  * University Acknowledgment- Portions of this document are derived from
  36  * software developed by the University of California, Berkeley, and its
  37  * contributors.
  38  */
  39
  40 #pragma ident   "%Z%%M% %I%     %E% SMI"
  41
  42 /*
  43  * a package to display what is happening every MSG_INTERVAL seconds
  44  * if we are slow connecting.
  45  */
  46
  47 #include <signal.h>
  48 #include <stdio.h>
  49 #include <sys/time.h>
  50 #include "talk.h"
  51
  52 #ifdef SYSV
  53 #define signal(s, f)    sigset(s, f)
  54 #endif /* SYSV */
  55
  56 #define MSG_INTERVAL 4
  57 #define LONG_TIME 100000
  58
  59 char *current_state;
  60 int current_line = 0;
  61
  62 static struct itimerval itimer;
  63 static struct timeval wait = { MSG_INTERVAL, 0};
  64
  65
  66 static void
  67 disp_msg()
  68 {
  69         message(current_state);
  70 }
  71
  72 void
  73 start_msgs()
  74 {
  75         message(current_state);
  76         signal(SIGALRM, (void (*)())disp_msg);
  77         itimer.it_value = itimer.it_interval = wait;
  78         setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
  79 }
  80
  81 void
  82 end_msgs()
  83 {
  84         signal(SIGALRM, SIG_IGN);
  85         timerclear(&itimer.it_value);
  86         timerclear(&itimer.it_interval);
  87         setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
  88 }