gen_server模板

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gen_server代码模板

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%% gen_server代码模板
-module(new_file).

-behaviour(gen_server).
% --------------------------------------------------------------------
% Include files
% --------------------------------------------------------------------

% --------------------------------------------------------------------
% External exports
-export([]).

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

-record(state, {}).

 

% --------------------------------------------------------------------
% Function: init/1
% Description: Initiates the server
% Returns: {ok, State}          |
%          {ok, State, Timeout} |
%          ignore               |
%          {stop, Reason}
% --------------------------------------------------------------------
init([]) ->
    {ok, #state{}}.

% --------------------------------------------------------------------
% Function: handle_call/3
% Description: Handling call messages
% Returns: {reply, Reply, State}          |
%          {reply, Reply, State, Timeout} |
%          {noreply, State}               |
%          {noreply, State, Timeout}      |
%          {stop, Reason, Reply, State}   | (terminate/2 is called)
%          {stop, Reason, State}            (terminate/2 is called)
% --------------------------------------------------------------------
handle_call(Request, From, State) ->
    Reply = ok,
    {reply, Reply, State}.

% --------------------------------------------------------------------
% Function: handle_cast/2
% Description: Handling cast messages
% Returns: {noreply, State}          |
%          {noreply, State, Timeout} |
%          {stop, Reason, State}            (terminate/2 is called)
% --------------------------------------------------------------------
handle_cast(Msg, State) ->
    {noreply, State}.

% --------------------------------------------------------------------
% Function: handle_info/2
% Description: Handling all non call/cast messages
% Returns: {noreply, State}          |
%          {noreply, State, Timeout} |
%          {stop, Reason, State}            (terminate/2 is called)
% --------------------------------------------------------------------
handle_info(Info, State) ->
    {noreply, State}.

% --------------------------------------------------------------------
% Function: terminate/2
% Description: Shutdown the server
% Returns: any (ignored by gen_server)
% --------------------------------------------------------------------
terminate(Reason, State) ->
    ok.

% --------------------------------------------------------------------
% Func: code_change/3
% Purpose: Convert process state when code is changed
% Returns: {ok, NewState}
% --------------------------------------------------------------------
code_change(OldVsn, State, Extra) ->
    {ok, State}.