msgs.c revision 50477 
1/*
2 * Copyright (c) 1983, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)msgs.c	8.1 (Berkeley) 6/6/93";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/usr.bin/talk/msgs.c 50477 1999-08-28 01:08:13Z peter $";
40#endif /* not lint */
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 "talk.h"
49
50#define MSG_INTERVAL 4
51
52char	*current_state;
53int	current_line = 0;
54
55/* ARGSUSED */
56void
57disp_msg(signo)
58	int signo;
59{
60	message(current_state);
61}
62
63void
64start_msgs()
65{
66	struct itimerval itimer;
67
68	message(current_state);
69	signal(SIGALRM, disp_msg);
70	itimer.it_value.tv_sec = itimer.it_interval.tv_sec = MSG_INTERVAL;
71	itimer.it_value.tv_usec = itimer.it_interval.tv_usec = 0;
72	setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
73}
74
75void
76end_msgs()
77{
78	struct itimerval itimer;
79
80	timerclear(&itimer.it_value);
81	timerclear(&itimer.it_interval);
82	setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
83	signal(SIGALRM, SIG_DFL);
84}
85