xref: /openbsd/usr.bin/talk/msgs.c (revision 8d688443)
1 /*	$OpenBSD: msgs.c,v 1.11 2016/02/01 07:29:25 mestre Exp $	*/
2 /*	$NetBSD: msgs.c,v 1.3 1994/12/09 02:14:22 jtc Exp $	*/
3 
4 /*
5  * Copyright (c) 1983, 1993
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 /*
34  * A package to display what is happening every MSG_INTERVAL seconds
35  * if we are slow connecting.
36  */
37 
38 #include "talk.h"
39 
40 #define MSG_INTERVAL 4
41 
42 char	*current_state;
43 int	current_line;
44 
45 void
disp_msg(int dummy)46 disp_msg(int dummy)
47 {
48 	message(current_state);
49 }
50 
51 void
start_msgs(void)52 start_msgs(void)
53 {
54 	struct itimerval itimer;
55 
56 	message(current_state);
57 	signal(SIGALRM, disp_msg);
58 	itimer.it_value.tv_sec = itimer.it_interval.tv_sec = MSG_INTERVAL;
59 	itimer.it_value.tv_usec = itimer.it_interval.tv_usec = 0;
60 	setitimer(ITIMER_REAL, &itimer, NULL);
61 }
62 
63 void
end_msgs(void)64 end_msgs(void)
65 {
66 	struct itimerval itimer;
67 
68 	timerclear(&itimer.it_value);
69 	timerclear(&itimer.it_interval);
70 	setitimer(ITIMER_REAL, &itimer, NULL);
71 	signal(SIGALRM, SIG_DFL);
72 }
73