%%
%% %CopyrightBegin%
%% 
%% Copyright Ericsson AB 2018. All Rights Reserved.
%% 
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%% 
%% %CopyrightEnd%
%%

-module(erl_544).

-export([err/0, wait/2]).

err() ->
    erlang:error(err).

wait(Pid, Msg) ->
    erlang:yield(),
    Pid ! Msg,
    receive
    after infinity ->
            ok
    end,
    err().