#!/usr/bin/perl
use strict;
use warnings;
use Fcntl qw(:flock);

my $testFile1 = "/tmp/test.txt";
my $lck = "/tmp/l.lck";
my $wantToQuit = 0;


while (1) {
        while ( !$wantToQuit ) {
       		$SIG{INT} = 'waitThenExit';
		my $pid = fork();
		if ( !defined( $pid ) ) {
			die("can't fork sub proc\n");
		}
                if ( $pid == 0 ) {
			print "Currently in pid==0 section, sleeping for 5 seconds\n";
			countDown(5);
		        &test1;
			&test2;	
                        $SIG{INT} = 'DEFAULT';
                }
                waitpid($pid,0);
        }
        exit 0 if $wantToQuit;
}

sub waitThenExit {
	print "\n\n\n===============WAIT SUB=================\n";
        print "One moment, I just gotta finish this bit...\n";
        $wantToQuit = 1;
	print "\n\n\n===============END WAIT SUB=================\n";
}

sub test1 {
        print "\n\n\n===============TEST1 SUB=================\n";
        print "Sleeping for 3 seconds In sub test1\n";
        countDown(3);
        print "===============END TEST1 SUB=================\n";
}


sub test2 {
	print "\n\n\n===============TEST2 SUB=================\n";
	print "Sleeping for 3 secs In sub Test2\n";
        sleep 3;
	print "Not done yet gotta sleep for another 15 seconds then we can quit\n";
	countDown(15);
	print "DONE WITH ALL CODE PROGRAM SHOULD NOW EXIT\n";
	print "===============END TEST2 SUB=================\n";
	exit 0;
}

sub countDown {
	my $delay = shift;
	my $count = 0;
	while ( $count < $delay ) {
		print "$count\n";
		sleep 1;
		$count++;
	}
}

##</code><code>##

Currently in pid==0 section, sleeping for 5 seconds
0
1
2
3
4



===============TEST1 SUB=================
Sleeping for 3 seconds In sub test1
0
1
2
===============END TEST1 SUB=================



===============TEST2 SUB=================
Sleeping for 3 secs In sub Test2
Not done yet gotta sleep for another 15 seconds then we can quit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DONE WITH ALL CODE PROGRAM SHOULD NOW EXIT

##</code><code>##

Currently in pid==0 section, sleeping for 5 seconds
0
1



===============WAIT SUB=================
One moment, I just gotta finish this bit...



===============END WAIT SUB=================
2



===============WAIT SUB=================
One moment, I just gotta finish this bit...



===============END WAIT SUB=================
3
4



===============TEST1 SUB=================
Sleeping for 3 seconds In sub test1
0
1
2
===============END TEST1 SUB=================



===============TEST2 SUB=================
Sleeping for 3 secs In sub Test2
Not done yet gotta sleep for another 15 seconds then we can quit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DONE WITH ALL CODE PROGRAM SHOULD NOW EXIT
===============END TEST2 SUB=================