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/*
Copyright (C) 1994 Free Software Foundation
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <signal.h>
#include <sys/time.h>
#include <stdio.h>
void
alarm_handler (int signo)
{
printf ("Received alarm\n");
fflush (stdout);
}
int
main()
{
struct itimerval real_timer;
real_timer.it_interval.tv_usec = 0;
real_timer.it_interval.tv_sec = 1;
real_timer.it_value.tv_usec = 0;
real_timer.it_value.tv_sec = 1;
signal (SIGALRM, alarm_handler);
if (setitimer (ITIMER_REAL, &real_timer, 0) < 0)
{
perror ("Setting timer");
exit (1);
}
while (1)
{
int c;
puts ("Pausing for input or one second...");
fflush (stdout);
c = getchar ();
if (ferror (stdin))
{
perror ("getchar");
exit (1);
}
if (c == EOF)
{
puts ("Saw EOF. Pausing (no input)...");
fflush (stdout);
sigpause (0);
}
else
printf ("Saw %.3o\n", c);
}
}
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