$self->{inot} = $inot;
$self->{pathmap} = {}; # inboxdir => [ ibx, watch1, watch2, watch3...]
$self->{on_unlock} = {}; # lock path => ibx
$self->{inot} = $inot;
$self->{pathmap} = {}; # inboxdir => [ ibx, watch1, watch2, watch3...]
$self->{on_unlock} = {}; # lock path => ibx