Finding leaked processes in Erlang

initial_calls.erl

lists:sort(fun({_, X}, {_, Y}) -> X > Y end, 
    dict:to_list(lists:foldl(
        fun(Pid, Dict) ->
            InitialCall = case erlang:process_info(Pid, initial_call) of
                                {initial_call,{proc_lib,init_p,A}} ->
                                    case erlang:process_info(Pid, dictionary) of
                                        {dictionary, D} -> proplists:get_value('$initial_call', D, undefined);
                                        _ -> {proc_lib,init_p,A}
                                    end;
                                {initial_call,IC} ->
                                    IC;
                                Other ->
                                    Other
                          end,
            dict:update_counter(InitialCall, 1, Dict)
        end, dict:new(), erlang:processes()))).