# Create terminal watcher

print "Create terminal watcher...\n";

my $Q_stdin = Thread::Queue->new ;
my $S_stdin = Thread::Semaphore->new(0) ;

print "fileno(STDIN) = ", fileno(STDIN), "\n" ;

async {
  $S_stdin->down() ;
  print "Reading STDIN, fileno=", fileno(STDIN), "\n" ;
  while (defined( $_ = <STDIN> )) {
    chomp ;
    print "\n+IN : '$_'   " ;
    $Q_stdin->enqueue( $_ ) ;
    print "*" ;
  } ;

}->detach;

close STDIN ;                          ### no longer our business       <<<<
print "STDIN is: ", defined(fileno(STDIN)) ? 'open' : 'closed', "\n" ;

$S_stdin->up() ;