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msgs.c

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by the University of
 *    California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * From: @(#)msgs.c     5.6 (Berkeley) 3/1/91
 */
char msgs_rcsid[] = 
  "$Id: msgs.c,v 1.6 1998/11/27 10:55:58 dholland Exp $";

/* 
 * A package to display what is happening every MSG_INTERVAL seconds
 * if we are slow connecting.
 */

#include <sys/time.h>
#include <signal.h>
#include <stdio.h>
#include "talk.h"

#define MSG_INTERVAL 4

const char *current_state;
int current_line = 0;

static
void
disp_msg(int ignore)
{
      (void)ignore;
      message(current_state);
}

void
start_msgs(void)
{
      struct itimerval itimer;
      struct sigaction act;

      message(current_state);

      act.sa_handler = disp_msg;
      act.sa_flags = SA_RESTART;
      sigemptyset(&act.sa_mask);
      sigaddset(&act.sa_mask, SIGALRM);
      sigaction(SIGALRM, &act, NULL);

      itimer.it_value.tv_sec = itimer.it_interval.tv_sec = MSG_INTERVAL;
      itimer.it_value.tv_usec = itimer.it_interval.tv_usec = 0;
      setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
}

void
end_msgs(void)
{
      struct itimerval itimer;
      struct sigaction act;

      timerclear(&itimer.it_value);
      timerclear(&itimer.it_interval);
      setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);

      act.sa_handler = SIG_DFL;
      act.sa_flags = SA_RESTART;
      sigemptyset(&act.sa_mask);
      sigaddset(&act.sa_mask, SIGALRM);
      sigaction(SIGALRM, &act, NULL);
}

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