%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2008-2016. 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% %%%------------------------------------------------------------------- %%% File : wxe_server.erl %%% Author : Dan Gudmundsson %%% Description : %%% %%% Created : 17 Jan 2007 by Dan Gudmundsson %%%------------------------------------------------------------------- %% @hidden -module(wxe_master). -behaviour(gen_server). %% API -export([start/1, init_port/1, init_opengl/0, fetch_msgs/0]). %% gen_server callbacks -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]). -record(state, {cb_port, %% Callback port and to erlang messages goes via it. users, %% List of wx servers, needed ?? driver, %% Driver name so wx_server can create it's own port msgs=[] %% Early messages (such as openfiles on OSX) }). -include("wxe.hrl"). -include("gen/wxe_debug.hrl"). -define(DRIVER, "wxe_driver"). %%==================================================================== %% API %%==================================================================== %%-------------------------------------------------------------------- %% Function: start(SilentStart) -> {ok,Pid} | ignore | {error,Error} %% Description: Starts the server %%-------------------------------------------------------------------- start(SilentStart) -> gen_server:start({local, ?MODULE}, ?MODULE, [SilentStart], []). %%-------------------------------------------------------------------- %% Function: init_port(SilentStart) -> {UserPort,CallBackPort} | error(Error) %% Description: Creates the port %%-------------------------------------------------------------------- init_port(SilentStart) -> case whereis(?MODULE) of undefined -> case start(SilentStart) of {ok,Pid} -> Pid; {error,{already_started,Pid}} -> Pid; {error, {Reason,Stack}} -> erlang:raise(error, Reason, Stack) end; Pid -> Pid end, {Driver, CBport} = gen_server:call(?MODULE, init_port, infinity), Port = open_port({spawn,Driver},[binary]), receive wx_port_initiated -> ok end, {Port, CBport}. %%-------------------------------------------------------------------- %% Initalizes the opengl library %%-------------------------------------------------------------------- init_opengl() -> case get(wx_init_opengl) of true -> {ok, "already initialized"}; _ -> GLLib = wxe_util:wxgl_dl(), Res = wxe_util:call(?WXE_INIT_OPENGL, <<(list_to_binary(GLLib))/binary, 0:8>>), element(1, Res) =:= ok andalso put(wx_init_opengl, true), Res end. %%-------------------------------------------------------------------- %% Fetch early messages, hack to get start up args on mac %%-------------------------------------------------------------------- fetch_msgs() -> gen_server:call(?MODULE, fetch_msgs, infinity). %%==================================================================== %% gen_server callbacks %%==================================================================== %%-------------------------------------------------------------------- %% Function: init(Args) -> {ok, State} | %% {ok, State, Timeout} | %% ignore | %% {stop, Reason} %% Description: Initiates the server %%-------------------------------------------------------------------- init([SilentStart]) -> DriverName = ?DRIVER, PrivDir = wxe_util:priv_dir(?DRIVER, SilentStart), erlang:group_leader(whereis(init), self()), case catch erlang:system_info(smp_support) of true -> ok; _ -> wxe_util:opt_error_log(SilentStart, "WX ERROR: SMP emulator required" " (start with erl -smp)", []), erlang:error(not_smp) end, case os:type() of {win32,_} -> %% Needed for mingwm10.dll Path = os:getenv("PATH"), os:putenv("PATH", PrivDir ++ ";" ++ Path); _ -> ok end, case erl_ddll:load_driver(PrivDir,DriverName) of ok -> ok; {error, What} -> wxe_util:opt_error_log(SilentStart, "WX Failed loading ~p@~p ~n", [DriverName,PrivDir]), Str = erl_ddll:format_error(What), erlang:error({load_driver,Str}) end, process_flag(trap_exit, true), DriverWithArgs = DriverName ++ " " ++ code:priv_dir(wx) ++ [0], try Port = open_port({spawn, DriverWithArgs},[binary]), wx_debug_info = ets:new(wx_debug_info, [named_table]), wx_non_consts = ets:new(wx_non_consts, [named_table]), true = ets:insert(wx_debug_info, wxdebug_table()), spawn_link(fun() -> debug_ping(Port) end), receive {wx_consts, List} -> true = ets:insert(wx_non_consts, List) end, {ok, #state{cb_port=Port, driver=DriverName, users=gb_sets:empty()}} catch _:Err -> error({Err, "Could not initiate graphics"}) end. %%-------------------------------------------------------------------- %% Function: %% handle_call(Request, From, State) -> {reply, Reply, State} | %% {reply, Reply, State, Timeout} | %% {noreply, State} | %% {noreply, State, Timeout} | %% {stop, Reason, Reply, State} | %% {stop, Reason, State} %% Description: Handling call messages %%-------------------------------------------------------------------- handle_call(init_port, From, State=#state{driver=Driver,cb_port=CBPort, users=Users}) -> {reply, {Driver,CBPort}, State#state{users=gb_sets:add(From,Users)}}; handle_call(fetch_msgs, _From, State=#state{msgs=Msgs}) -> {reply, lists:reverse(Msgs), State#state{msgs=[]}}; handle_call(_Request, _From, State) -> %%io:format("Unknown request ~p sent to ~p from ~p ~n",[_Request, ?MODULE, _From]), Reply = ok, {reply, Reply, State}. %%-------------------------------------------------------------------- %% Function: handle_cast(Msg, State) -> {noreply, State} | %% {noreply, State, Timeout} | %% {stop, Reason, State} %% Description: Handling cast messages %%-------------------------------------------------------------------- handle_cast(_Msg, State) -> %%io:format("Unknown message ~p sent to ~p~n",[_Msg, ?MODULE]), {noreply, State}. %%-------------------------------------------------------------------- %% Function: handle_info(Info, State) -> {noreply, State} | %% {noreply, State, Timeout} | %% {stop, Reason, State} %% Description: Handling all non call/cast messages %%-------------------------------------------------------------------- handle_info({wxe_driver, error, Msg}, State) -> error_logger:error_report([{wx, error}, {message, lists:flatten(Msg)}]), {noreply, State}; handle_info({wxe_driver, internal_error, Msg}, State) -> error_logger:error_report([{wx, internal_error}, {message, lists:flatten(Msg)}]), {noreply, State}; handle_info({wxe_driver, debug, Msg}, State) -> io:format("WX DBG: ~s~n", [Msg]), {noreply, State}; handle_info({wxe_driver, open_file, File}, State=#state{msgs=Msgs}) -> {noreply, State#state{msgs=[File|Msgs]}}; handle_info(_Info, State) -> io:format("Unknown message ~p sent to ~p~n",[_Info, ?MODULE]), {noreply, State}. %%-------------------------------------------------------------------- %% Function: terminate(Reason, State) -> void() %% Description: This function is called by a gen_server when it is about to %% terminate. It should be the opposite of Module:init/1 and do any necessary %% cleaning up. When it returns, the gen_server terminates with Reason. %% The return value is ignored. %%-------------------------------------------------------------------- terminate(_Reason, _State) -> erlang:display({?MODULE, killed, process_info(self(),trap_exit),_Reason}), ok. %%-------------------------------------------------------------------- %% Func: code_change(OldVsn, State, Extra) -> {ok, NewState} %% Description: Convert process state when code is changed %%-------------------------------------------------------------------- code_change(_OldVsn, State, _Extra) -> {ok, State}. %%-------------------------------------------------------------------- %%% Internal functions %%-------------------------------------------------------------------- %%%%%%%%%%%% INTERNAL %%%%%%%%%%%%%%%%%%%%%%%% debug_ping(Port) -> timer:sleep(1*333), _R = (catch erlang:port_call(Port, 0, [])), %% io:format("Erlang ping ~p ~n", [_R]), debug_ping(Port).