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|
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2022. 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 <dgud@erix.ericsson.se>
%%% Description :
%%%
%%% Created : 17 Jan 2007 by Dan Gudmundsson <dgud@erix.ericsson.se>
%%%-------------------------------------------------------------------
%% @hidden
-module(wxe_master).
-behaviour(gen_server).
%% API
-export([start/1, init_env/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, {subscribers=[], %% WxApp messages listeners
msgs=[] %% WxApp messages (open_file and new_file on MacOSX)
}).
-include("wxe.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_env(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,
gen_server:call(?MODULE, init_env, infinity), %% sync
wxe_util:make_env().
%%--------------------------------------------------------------------
%% Initializes the opengl library
%%--------------------------------------------------------------------
init_opengl() ->
case get(wx_init_opengl) of
true -> {ok, "already initialized"};
_ ->
Opaque = gl:lookup_func(functions),
Debug = gl:lookup_func(function_names),
{ok, wxe_util:init_opengl(Opaque, Debug)}
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]) ->
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", []),
erlang:error({error, not_smp})
end,
process_flag(trap_exit, true),
case wxe_util:init_nif(SilentStart) of
ok -> ok;
{error, {Reason, String}} = Err ->
wxe_util:opt_error_log(SilentStart,
"WX ERROR: Could not load library: ~p~n~s",
[Reason, String]),
erlang:error(Err)
end,
try
spawn_link(fun() -> debug_ping() end),
wxe_util:setup_consts(),
{ok, #state{}}
catch _:Error:ST ->
Str = io_lib:format("Error: ~p @ ~p~n",[Error, ST]),
logger:log(error, Str, #{domain => [wx]}),
error({error, {Error, "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_env, _From, State) ->
{reply, ok, State};
handle_call(fetch_msgs, _From, State=#state{msgs=Msgs}) ->
NewFiles = [Data || {Type, Data} <- lists:reverse(Msgs), Type == new_file],
{reply, NewFiles, State#state{msgs=[]}};
handle_call(subscribe_msgs, {Pid, _Tag}, State=#state{subscribers=Subs}) ->
monitor(process, Pid),
lists:foreach(fun(Msg) -> Pid ! Msg end, lists:reverse(State#state.msgs)),
{reply, ok, State#state{subscribers=[Pid|Subs], 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) ->
logger:log(error, "wx: ~s", [Msg], #{domain => [wx]}),
{noreply, State};
handle_info({wxe_driver, internal_error, Msg}, State) ->
logger:log(error, "wx: ~s", [Msg], #{domain => [wx]}),
{noreply, State};
handle_info({wxe_driver, debug, Msg}, State) ->
logger:log(notice, "wx: ~s", [Msg], #{domain => [wx]}),
{noreply, State};
handle_info({wxe_driver, Cmd, File}, State = #state{subscribers=Subs, msgs=Msgs})
when Cmd =:= open_file; Cmd =:= new_file; Cmd =:= print_file;
Cmd =:= open_url; Cmd =:= reopen_app ->
lists:foreach(fun(Pid) -> Pid ! {Cmd, File} end, Subs),
{noreply, State#state{msgs=[{Cmd, File}|Msgs]}};
handle_info({'DOWN', _Ref, process, Pid, _Info}, State) ->
Subs = State#state.subscribers -- [Pid],
{noreply, State#state{subscribers=Subs}};
handle_info(Info, State) ->
logger:log(notice, "wx: Unexpected Msg: ~p", [Info], #{domain => [wx], line=>?LINE, file=>?MODULE_STRING}),
{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() ->
timer:sleep(1*333),
wxe_util:debug_ping(),
debug_ping().
|
