cleanups, add manual page
[unix-history] / usr / src / usr.bin / talk / msgs.c
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CommitLineData
1/*
2 * Copyright (c) 1983 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * advertising materials, and other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Berkeley. The name of the
11 * University may not be used to endorse or promote products derived
12 * from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16 */
17
18#ifndef lint
19static char sccsid[] = "@(#)msgs.c 5.4 (Berkeley) %G%";
20#endif /* not lint */
21
22/*
23 * A package to display what is happening every MSG_INTERVAL seconds
24 * if we are slow connecting.
25 */
26
27#include <signal.h>
28#include <stdio.h>
29#include <sys/time.h>
30#include "talk.h"
31
32#define MSG_INTERVAL 4
33
34char *current_state;
35int current_line = 0;
36
37disp_msg()
38{
39
40 message(current_state);
41}
42
43start_msgs()
44{
45 struct itimerval itimer;
46
47 message(current_state);
48 signal(SIGALRM, disp_msg);
49 itimer.it_value.tv_sec = itimer.it_interval.tv_sec = MSG_INTERVAL;
50 itimer.it_value.tv_usec = itimer.it_interval.tv_usec = 0;
51 setitimer(ITIMER_REAL, &itimer, (struct timerval *)0);
52}
53
54end_msgs()
55{
56 struct itimerval itimer;
57
58 timerclear(&itimer.it_value);
59 timerclear(&itimer.it_interval);
60 setitimer(ITIMER_REAL, &itimer, (struct timerval *)0);
61 signal(SIGALRM, SIG_DFL);
62}