gistfile1.hrl

-module(t).

-behaviour(gen_server).

-export([start_link/0]).

-export([
         init/1,
         handle_call/3,
         handle_cast/2,
         handle_info/2,
         terminate/2,
         code_change/3
        ]).

-define(SERVER, ?MODULE).

-record(state, {
          pid
         }).

%%% API
start_link() ->
    gen_server:start_link({local, ?SERVER}, ?MODULE, [], []).

%%% gen_server callbacks

init([]) ->
    process_flag(trap_exit, true),
    {ok, #state{pid = self()}}.

handle_call(_Request, _From, State) ->
    Reply = ok,
    {reply, Reply, State}.

handle_cast(_Msg, State) ->
    {noreply, State}.

handle_info(_Info, State) ->
    io:format("Info: ~p~n", [_Info]),
    {noreply, State}.

terminate(_Reason, _State) ->
    io:format("Terminate: ~p~n", [_Reason]),
    ok.

code_change(_OldVsn, State, _Extra) ->
    {ok, State}.