#!/usr/bin/perl -w
#
# Copyright (c) 2014  Sulev-Madis Silber <ketas@si.pri.ee>
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
#


use strict;
use warnings FATAL => 'all';


$| = 1;


{
	my @rtprio = ('rtprio', '-t', sprintf("-%s", $$));
	
	system { $rtprio[0] } @rtprio;
}


sub proctitle ($)
{
	my ($suffix) = @_;
	
	
	$0 = sprintf "watchdog%s", (defined $suffix ? sprintf " %s", $suffix : '');
}


sub clean_exit ()
{
	exit;
}


$SIG{$_} = \&clean_exit foreach (qw(TERM INT HUP));


print STDERR "READY\n";


while (<STDIN>)
{
	if (/^\s*(.{1,256})\s*$/)
	{
		proctitle $1;
	}
}


clean_exit;