}
sub lock_release {
- my ($self) = @_;
+ my ($self, $wake) = @_;
return unless $self->{lock_path};
my $lockfh = delete $self->{lockfh} or croak 'not locked';
+
+ syswrite($lockfh, '.') if $wake;
+
flock($lockfh, LOCK_UN) or die "unlock failed: $!\n";
close $lockfh or die "close failed: $!\n";
}