The R13B03 release.OTP_R13B03

1 files changed, 744 insertions, 0 deletions

diff --git a/lib/debugger/src/dbg_ui_mon.erl b/lib/debugger/src/dbg_ui_mon.erl
new file mode 100644
index 0000000000..63cc9b66d1
--- /dev/null
+++ b/lib/debugger/src/dbg_ui_mon.erl
@@ -0,0 +1,744 @@
+%%
+%% %CopyrightBegin%
+%% 
+%% Copyright Ericsson AB 1997-2009. All Rights Reserved.
+%% 
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% %CopyrightEnd%
+%%
+-module(dbg_ui_mon).
+
+-include_lib("kernel/include/file.hrl").
+
+%% External exports
+-export([start/2, stop/0]).
+
+-define(TRACEWIN, ['Button Area', 'Evaluator Area', 'Bindings Area']).
+-define(BACKTRACE, 100).
+
+-record(pinfo, {pid,       % pid()
+		status     % break | exit | idle | running | waiting
+	       }).
+
+-record(state, {mode,      % local | global
+		starter,   % bool() 'true' if int was started by me
+
+		gs,        % term() Graphics system id
+		win,       % term() Monitor window data
+		focus,     % undefined | #pinfo{} Process in focus
+		coords,    % {X,Y} Mouse pointer position
+
+		intdir,    % string() Default dir
+		pinfos,    % [#pinfo{}] Debugged processes
+
+		tracewin,  % [Area] Areas shown in trace window
+		backtrace, % integer() Number of call frames to fetch
+
+		attach,    % false | {Flags, Function}
+
+		sfile,     % default | string() Settings file
+		changed    % boolean() Settings have been changed
+	       }). 
+
+%%====================================================================
+%% External exports
+%%====================================================================
+
+%%--------------------------------------------------------------------
+%% start(Mode, SFile) -> {ok, Pid} | {error, Reason}
+%%   Mode = local | global
+%%   SFile = string() | default  Settings file
+%%   Pid = pid()
+%%   Reason = {already_started,Pid} | term()
+%%--------------------------------------------------------------------
+start(Mode, SFile) ->
+    case whereis(?MODULE) of
+	undefined ->
+	    CallingPid = self(),
+	    Pid = spawn(fun () -> init(CallingPid, Mode, SFile) end),
+	    receive
+		{initialization_complete, Pid} ->
+		    {ok, Pid};
+		Error ->
+		    Error
+	    end;
+
+	Pid ->
+            {error, {already_started,Pid}}
+    end.
+
+%%--------------------------------------------------------------------
+%% stop() -> ok
+%%--------------------------------------------------------------------
+stop() ->
+    case whereis(?MODULE) of
+	undefined ->
+	    ok;
+	Pid ->
+	    Flag = process_flag(trap_exit, true),
+	    link(Pid),
+	    Pid ! stop,
+	    receive
+		{'EXIT', Pid, stop} ->
+		    process_flag(trap_exit, Flag),
+		    ok
+	    end
+    end.
+
+
+%%====================================================================
+%% Initialization
+%%====================================================================
+
+init(CallingPid, Mode, SFile) ->
+    register(?MODULE, self()),
+
+    %% Graphics system
+    case catch dbg_ui_mon_win:init() of
+	{'EXIT', Reason} ->
+	    CallingPid ! {error, Reason};
+	GS ->
+	    init2(CallingPid, Mode, SFile, GS)
+    end.
+
+init2(CallingPid, Mode, SFile, GS) ->
+
+    %% Start Int if necessary and subscribe to information from it
+    Bool = case int:start() of
+	       {ok, _Int} -> true;
+	       {error, {already_started, _Int}} -> false
+	   end,
+    int:subscribe(),
+
+    %% Start other necessary stuff
+    dbg_ui_winman:start(), % Debugger window manager
+
+    %% Create monitor window
+    Title = "Monitor",
+    Win = dbg_ui_mon_win:create_win(GS, Title, menus()),
+    Window = dbg_ui_mon_win:get_window(Win),
+    dbg_ui_winman:insert(Title, Window),
+
+    %% Initial process state
+    State1 = #state{mode    = Mode,
+		    starter = Bool,
+
+		    gs      = GS,
+		    win     = Win,
+		    focus   = undefined,
+		    coords  = {0,0},
+
+		    intdir  = element(2, file:get_cwd()),
+		    pinfos  = [],
+
+		    sfile   = SFile,
+		    changed = false
+		   },
+
+    State2 = init_options(?TRACEWIN,            % Trace Window
+			  int:auto_attach(),    % Auto Attach
+			  int:stack_trace(),    % Stack Trace
+			  ?BACKTRACE,           % Back Trace Size
+			  State1),
+
+    State3 = init_contents(int:interpreted(),   % Modules
+			   int:all_breaks(),    % Breakpoints
+			   int:snapshot(),      % Processes
+			   State2),
+
+    %% Disable/enable functionality according to process in focus (none)
+    gui_enable_functions(State3#state.focus),
+
+    CallingPid ! {initialization_complete, self()},
+
+    if
+	SFile==default ->
+	    loop(State3);
+	true ->
+	    loop(load_settings(SFile, State3))
+    end.
+
+init_options(TraceWin, AutoAttach, StackTrace, BackTrace, State) ->
+    lists:foreach(fun(Area) ->
+			  dbg_ui_mon_win:select(Area, true)
+		  end,
+		  TraceWin),
+
+    case AutoAttach of
+	false -> ignore;
+	{Flags, _Function} ->
+	    dbg_ui_mon_win:show_option(State#state.win,
+				       auto_attach, Flags),
+	    lists:foreach(fun(Flag) ->
+				  dbg_ui_mon_win:select(map(Flag), true)
+			  end,
+			  Flags)
+    end,
+
+    dbg_ui_mon_win:show_option(State#state.win,
+			       stack_trace, StackTrace),
+    dbg_ui_mon_win:select(map(StackTrace), true),
+
+    dbg_ui_mon_win:show_option(State#state.win, back_trace, BackTrace),
+
+    State#state{tracewin=TraceWin, backtrace=BackTrace}.
+
+init_contents(Mods, Breaks, Processes, State) ->
+    Win2 =
+        lists:foldl(fun(Mod, Win) ->
+			    dbg_ui_mon_win:add_module(Win,'Module',Mod)
+		    end,
+		    State#state.win,
+		    Mods),
+
+    Win3 = 
+        lists:foldl(fun(Break, Win) ->
+			    dbg_ui_mon_win:add_break(Win,'Break',Break)
+		    end,
+		    Win2,
+		    Breaks),
+
+    lists:foldl(fun(PidTuple, State0) ->
+			int_cmd({new_process, PidTuple}, State0)
+		end,
+		State#state{win=Win3},
+		Processes).
+
+
+%%====================================================================
+%% Main loop and message handling
+%%====================================================================
+
+loop(State) ->
+    receive
+
+	stop ->
+	    gui_cmd(stopped, State);
+
+	%% From the GUI
+	GuiEvent when is_tuple(GuiEvent), element(1, GuiEvent)==gs ->
+	    Cmd = dbg_ui_mon_win:handle_event(GuiEvent,State#state.win),
+	    State2 = gui_cmd(Cmd, State),
+	    loop(State2);
+
+	%% From the interpreter process
+	{int, Cmd} ->
+	    State2 = int_cmd(Cmd, State),
+	    loop(State2);
+
+	%% From the dbg_ui_interpret process
+	{dbg_ui_interpret, Dir} ->
+	    loop(State#state{intdir=Dir});
+
+	%% From the dbg_ui_edit process
+	{dbg_ui_edit, 'Backtrace:', BackTrace}  ->
+	    dbg_ui_mon_win:show_option(State#state.win,
+				       back_trace, BackTrace),
+	    loop(State#state{backtrace=BackTrace});
+
+	%% From the dbg_ui_settings process
+	{dbg_ui_settings, SFile, Action} ->
+	    State2 = case Action of
+			 load -> load_settings(SFile, State);
+			 save -> save_settings(SFile, State)
+		     end,
+	    loop(State2);
+
+	%% From the dbg_ui_winman process (Debugger window manager)
+	{dbg_ui_winman, update_windows_menu, Data} ->
+	    dbg_ui_winman:update_windows_menu(Data),
+	    loop(State)
+    end.
+
+%%--Commands from the GUI---------------------------------------------
+%% Act upon a command from the GUI. In most cases, it is only necessary
+%% to call a relevant int-function. int will then report when the action
+%% has been taken.
+
+gui_cmd(ignore, State) ->
+    State;
+gui_cmd(stopped, State) ->
+    if
+	State#state.starter==true -> int:stop();
+	true -> int:auto_attach(false)
+    end,
+    exit(stop);
+gui_cmd({coords, Coords}, State) ->
+    State#state{coords=Coords};
+
+gui_cmd({shortcut, Key}, State) ->
+    case shortcut(Key) of
+	{always, Cmd} -> gui_cmd(Cmd, State);
+	{if_enabled, Cmd} ->
+	    case dbg_ui_mon_win:is_enabled(Cmd) of
+		true -> gui_cmd(Cmd, State);
+		false -> State
+	    end;
+	false -> State
+    end;
+
+%% File Menu
+gui_cmd('Load Settings...', State) ->
+    Window = dbg_ui_mon_win:get_window(State#state.win),
+    dbg_ui_settings:start(Window, State#state.coords,
+			  load, State#state.sfile),
+    State;
+gui_cmd('Save Settings...', State) ->
+    Window = dbg_ui_mon_win:get_window(State#state.win),
+    dbg_ui_settings:start(Window, State#state.coords,
+			  save, State#state.sfile),
+    State;
+gui_cmd('Exit', State) ->
+    gui_cmd(stopped, State);
+
+%% Edit Menu
+gui_cmd('Refresh', State) ->
+    int:clear(),
+    Win = dbg_ui_mon_win:clear_processes(State#state.win),
+    gui_enable_functions(undefined),
+    State2 = State#state{win=Win, focus=undefined, pinfos=[]},
+    lists:foldl(fun(PidTuple, S) ->
+			int_cmd({new_process,PidTuple}, S)
+		end,
+		State2,
+		int:snapshot());
+gui_cmd('Kill All', State) ->
+    lists:foreach(fun(PInfo) ->
+			  case PInfo#pinfo.status of
+			      exit -> ignore;
+			      _Status -> exit(PInfo#pinfo.pid, kill)
+			  end
+		  end,
+		  State#state.pinfos),
+    State;
+
+%% Module Menu
+gui_cmd('Interpret...', State) ->
+    dbg_ui_interpret:start(State#state.gs, State#state.coords,
+			   State#state.intdir, State#state.mode),
+    State;
+gui_cmd('Delete All Modules', State) ->
+    lists:foreach(fun(Mod) -> int:nn(Mod) end, int:interpreted()),
+    State;
+gui_cmd({module, Mod, What}, State) ->
+    case What of
+	delete -> int:nn(Mod);
+	view -> dbg_ui_view:start(State#state.gs, Mod)
+    end,
+    State;
+
+%% Process Menu
+gui_cmd('Step', State) ->
+    int:step((State#state.focus)#pinfo.pid),
+    State;
+gui_cmd('Next', State) ->
+    int:next((State#state.focus)#pinfo.pid),
+    State;
+gui_cmd('Continue', State) ->
+    int:continue((State#state.focus)#pinfo.pid),
+    State;
+gui_cmd('Finish ', State) ->
+    int:finish((State#state.focus)#pinfo.pid),
+    State;
+gui_cmd('Attach', State) ->
+    Pid = (State#state.focus)#pinfo.pid,
+    case dbg_ui_winman:is_started(dbg_ui_trace:title(Pid)) of
+	true -> ignore;
+	false -> int:attach(Pid, trace_function(State))
+    end,
+    State;
+gui_cmd('Kill', State) ->
+    exit((State#state.focus)#pinfo.pid, kill),
+    State;
+
+%% Break Menu
+gui_cmd('Line Break...', State) ->
+    dbg_ui_break:start(State#state.gs, State#state.coords, line),
+    State;
+gui_cmd('Conditional Break...', State) ->
+    dbg_ui_break:start(State#state.gs, State#state.coords, conditional),
+    State;
+gui_cmd('Function Break...', State) ->
+    dbg_ui_break:start(State#state.gs, State#state.coords, function),
+    State;
+gui_cmd('Enable All', State) ->
+    Breaks = int:all_breaks(),
+    lists:foreach(fun ({{Mod, Line}, _Options}) ->
+			  int:enable_break(Mod, Line)
+		  end,
+		  Breaks),
+    State;
+gui_cmd('Disable All', State) ->
+    Breaks = int:all_breaks(),
+    lists:foreach(fun ({{Mod, Line}, _Options}) ->
+			  int:disable_break(Mod, Line)
+		  end,
+		  Breaks),
+    State;
+gui_cmd('Delete All', State) ->
+    int:no_break(),
+    State;
+gui_cmd({break, {Mod, Line}, What}, State) ->
+    case What of
+	delete -> int:delete_break(Mod, Line);
+	{status, inactive} -> int:disable_break(Mod, Line);
+	{status, active} -> int:enable_break(Mod, Line);
+	{trigger, Action} -> int:action_at_break(Mod, Line, Action)
+    end,
+    State;
+
+%% Options Commands
+gui_cmd({'Trace Window', TraceWin}, State) ->
+    State2 = State#state{tracewin=TraceWin},
+    case State#state.attach of
+	false -> ignore;
+	{Flags, {dbg_ui_trace, start, StartFlags}} ->
+	    case trace_function(State2) of
+		{_, _, StartFlags} -> ignore;
+		NewFunction -> % {_, _, NewStartFlags}
+		    int:auto_attach(Flags, NewFunction)
+	    end;
+	_AutoAttach -> ignore
+    end,
+    State2;
+gui_cmd({'Auto Attach', When}, State) ->
+    if
+	When==[] -> int:auto_attach(false);
+	true ->
+	    Flags = lists:map(fun(Name) -> map(Name) end, When),
+	    int:auto_attach(Flags, trace_function(State))
+    end,
+    State;
+gui_cmd({'Stack Trace', [Name]}, State) ->
+    int:stack_trace(map(Name)),
+    State;
+gui_cmd('Back Trace Size...', State) ->
+    dbg_ui_edit:start(State#state.gs, State#state.coords, "Backtrace",
+		      'Backtrace:', {integer, State#state.backtrace}),
+    State;
+
+%% Help Menu
+gui_cmd('Debugger', State) ->
+    HelpFile = filename:join([code:lib_dir(debugger),
+			      "doc", "html", "part_frame.html"]),
+    Window = dbg_ui_mon_win:get_window(State#state.win),
+    tool_utils:open_help(Window, HelpFile),
+    State;
+
+gui_cmd({focus, Pid, Win}, State) ->
+    {value, PInfo} =
+	lists:keysearch(Pid, #pinfo.pid, State#state.pinfos),
+    gui_enable_functions(PInfo),
+    State#state{win=Win, focus=PInfo};
+gui_cmd(default, State) ->
+    case lists:member('Attach', menus(enabled, State#state.focus)) of
+	true -> gui_cmd('Attach', State);
+	false -> State
+    end.
+
+%%--Commands from the interpreter-------------------------------------
+
+int_cmd({interpret, Mod}, State) ->
+    Win = dbg_ui_mon_win:add_module(State#state.win, 'Module', Mod),
+    State#state{win=Win};
+int_cmd({no_interpret, Mod}, State) ->
+    Win = dbg_ui_mon_win:delete_module(State#state.win, Mod),
+    State#state{win=Win};
+
+int_cmd({new_process, {Pid, Function, Status, Info}}, State) ->
+
+    %% Create record with information about the process
+    Name = registered_name(Pid),
+    PInfo = #pinfo{pid=Pid, status=Status},
+
+    %% Update window
+    Win = dbg_ui_mon_win:add_process(State#state.win,
+				     Pid, Name, Function, Status, Info),
+
+    %% Store process information
+    PInfos = State#state.pinfos ++ [PInfo],
+    State#state{win=Win, pinfos=PInfos};
+int_cmd({new_status, Pid, Status, Info}, State) ->
+
+    %% Find stored information about the process
+    PInfos = State#state.pinfos,
+    {value, PInfo} = lists:keysearch(Pid, #pinfo.pid, PInfos),
+
+    %% Update process information
+    PInfo2 = PInfo#pinfo{status=Status},
+    PInfos2 = lists:keyreplace(Pid, #pinfo.pid, PInfos, PInfo2),
+    State2 = State#state{pinfos=PInfos2},
+
+    %% Update window
+    dbg_ui_mon_win:update_process(State2#state.win, Pid, Status, Info),
+    case State2#state.focus of
+	#pinfo{pid=Pid} ->
+	    gui_enable_functions(PInfo2),
+	    State2#state{focus=PInfo2};
+	_ ->
+	    State2
+    end;
+
+int_cmd({new_break, Break}, State) ->
+    Win = dbg_ui_mon_win:add_break(State#state.win, 'Break', Break),
+    State#state{win=Win};
+int_cmd({delete_break, Point}, State) ->
+    Win = dbg_ui_mon_win:delete_break(State#state.win, Point),
+    State#state{win=Win};
+int_cmd({break_options, Break}, State) ->
+    dbg_ui_mon_win:update_break(State#state.win, Break),
+    State;
+int_cmd(no_break, State) ->
+    Win = dbg_ui_mon_win:clear_breaks(State#state.win),
+    State#state{win=Win};
+int_cmd({no_break, Mod}, State) ->
+    Win = dbg_ui_mon_win:clear_breaks(State#state.win, Mod),
+    State#state{win=Win};
+
+int_cmd({auto_attach, AutoAttach}, State) ->
+    OnFlags = case AutoAttach of
+		  false -> [];
+		  {Flags, _Function} -> Flags
+	      end,
+    OffFlags = [init, exit, break] -- OnFlags,
+    dbg_ui_mon_win:show_option(State#state.win, auto_attach, OnFlags),
+    lists:foreach(fun(Flag) ->
+			  dbg_ui_mon_win:select(map(Flag), true)
+		  end,
+		  OnFlags),
+    lists:foreach(fun(Flag) ->
+			  dbg_ui_mon_win:select(map(Flag), false)
+		  end,
+		  OffFlags),
+    State#state{attach=AutoAttach};
+int_cmd({stack_trace, Flag}, State) ->
+    dbg_ui_mon_win:show_option(State#state.win, stack_trace, Flag),
+    dbg_ui_mon_win:select(map(Flag), true),
+    State.
+
+
+%%====================================================================
+%% GUI auxiliary functions
+%%====================================================================
+
+menus() ->
+    [{'File', [{'Load Settings...', 0},
+	       {'Save Settings...', 2},
+	       separator,
+	       {'Exit', 0}]},
+     {'Edit', [{'Refresh', no},
+	       {'Kill All', no}]},
+     {'Module', [{'Interpret...', 0},
+		 {'Delete All Modules', no},
+		 separator]},
+     {'Process', [{'Step', 0},
+		  {'Next', 0},
+		  {'Continue', 0},
+		  {'Finish ', 0},
+		  separator,
+		  {'Attach', 0},
+		  {'Kill', no}]},
+     {'Break', [{'Line Break...', 5},
+		{'Conditional Break...', no},
+		{'Function Break...', no},
+		separator,
+		{'Enable All', no},
+		{'Disable All', no},
+		{'Delete All', 0},
+		separator]},
+     {'Options', [{'Trace Window', no, cascade,
+		   [{'Button Area', no, check},
+		    {'Evaluator Area', no, check},
+		    {'Bindings Area', no, check},
+		    {'Trace Area', no, check}]},
+		  {'Auto Attach', no, cascade,
+		   [{'First Call', no, check},
+		    {'On Break', no, check},
+		    {'On Exit', no, check}]},
+		  {'Stack Trace', no, cascade,
+		   [{'Stack On, Tail', no, radio},
+		    {'Stack On, No Tail', no, radio},
+		    {'Stack Off', no, radio}]},
+		  {'Back Trace Size...', no}]},
+     {'Help', [{'Debugger', no}]}].
+
+menus(enabled,  undefined) ->
+    [];
+menus(disabled, undefined) ->
+    ['Step','Next','Continue','Finish ','Attach','Kill'];
+menus(enabled,  #pinfo{status=exit}) ->
+    ['Attach'];
+menus(disabled, #pinfo{status=exit}) ->
+    ['Step','Next','Continue','Finish ','Kill'];
+menus(enabled,  #pinfo{status=break}) ->
+    ['Step','Next','Continue','Finish ','Attach','Kill'];
+menus(disabled, #pinfo{status=break}) ->
+    [];
+menus(enabled,  _PInfo) ->
+    ['Attach','Kill'];
+menus(disabled, _PInfo) ->
+    ['Step','Next','Continue','Finish '].
+
+shortcut(l) -> {always, 'Load Settings...'};
+shortcut(v) -> {always, 'Save Settings...'};
+shortcut(e) -> {always, 'Exit'};
+
+shortcut(i) -> {always, 'Interpret...'};
+
+shortcut(s) -> {if_enabled, 'Step'};
+shortcut(n) -> {if_enabled, 'Next'};
+shortcut(c) -> {if_enabled, 'Continue'};
+shortcut(f) -> {if_enabled, 'Finish '};
+shortcut(a) -> {if_enabled, 'Attach'};
+
+shortcut(b) -> {always, 'Line Break...'};
+shortcut(d) -> {always, 'Delete All'};
+
+shortcut(_) -> false.
+
+%% Enable/disable functionality depending on the state of the process
+%% currently in Focus
+gui_enable_functions(PInfo) ->
+    Enabled = menus(enabled, PInfo),
+    Disabled = menus(disabled, PInfo),
+    dbg_ui_mon_win:enable(Enabled, true),
+    dbg_ui_mon_win:enable(Disabled, false).
+
+%% Map values used by int to/from GUI names
+map('First Call')        -> init;               % Auto attach
+map('On Exit')           -> exit;
+map('On Break')          -> break;
+map(init)                -> 'First Call';
+map(exit)                -> 'On Exit';
+map(break)               -> 'On Break';
+
+map('Stack On, Tail')    -> all;               % Stack trace
+map('Stack On, No Tail') -> no_tail;
+map('Stack Off')         -> false;
+map(all)                 -> 'Stack On, Tail';
+map(true)                -> 'Stack On, Tail';
+map(no_tail)             -> 'Stack On, No Tail';
+map(false)               -> 'Stack Off'.
+
+
+%%====================================================================
+%% Debugger settings
+%%====================================================================
+
+load_settings(SFile, State) ->
+    case file:read_file(SFile) of
+	{ok, Binary} ->
+	    case catch binary_to_term(Binary) of
+		{debugger_settings, Settings} ->
+		    load_settings2(Settings,
+				   State#state{sfile=SFile,
+					       changed=false});
+		_Error -> State
+	    end;
+	{error, _Reason} -> State
+    end.
+
+load_settings2(Settings, State) ->
+    {TraceWin, AutoAttach, StackTrace, BackTrace, Files, Breaks} =
+	Settings,
+
+    TraceWinAll = ['Button Area', 'Evaluator Area', 'Bindings Area',
+		   'Trace Area'],
+    lists:foreach(fun(Area) -> dbg_ui_mon_win:select(Area, true) end,
+		  TraceWin),
+    lists:foreach(fun(Area) -> dbg_ui_mon_win:select(Area, false) end,
+		  TraceWinAll--TraceWin),
+
+    case AutoAttach of
+	false -> int:auto_attach(false);
+	{Flags, Function} -> int:auto_attach(Flags, Function)
+    end,
+
+    int:stack_trace(StackTrace),
+
+    dbg_ui_mon_win:show_option(State#state.win, back_trace, BackTrace),
+
+    case State#state.mode of
+	local -> lists:foreach(fun(File) -> int:i(File) end, Files);
+	global -> lists:foreach(fun(File) -> int:ni(File) end, Files)
+    end,
+    lists:foreach(fun(Break) ->
+			  {{Mod, Line}, [Status, Action, _, Cond]} =
+			      Break,
+			  int:break(Mod, Line),
+			  if
+			      Status==inactive ->
+				  int:disable_break(Mod, Line);
+			      true -> ignore
+			  end,
+			  if
+			      Action/=enable ->
+				  int:action_at_break(Mod,Line,Action);
+			      true -> ignore
+			  end,
+			  case Cond of
+			      CFunction when is_tuple(CFunction) ->
+				  int:test_at_break(Mod,Line,CFunction);
+			      null -> ignore
+			  end
+		  end,
+		  Breaks),
+
+    State#state{tracewin=TraceWin, backtrace=BackTrace}.
+
+save_settings(SFile, State) ->
+    Settings = {State#state.tracewin,
+		int:auto_attach(),
+		int:stack_trace(),
+		State#state.backtrace,
+		lists:map(fun(Mod) ->
+				  int:file(Mod)
+			  end,
+			  int:interpreted()),
+		int:all_breaks()},
+
+    Binary = term_to_binary({debugger_settings, Settings}),
+    case file:write_file(SFile, Binary) of
+	ok ->
+	    State#state{sfile=SFile, changed=false};
+	{error, _Reason} ->
+	    State
+    end.
+
+
+%%====================================================================
+%% Other internal functions
+%%====================================================================
+
+registered_name(Pid) ->
+
+    %% Yield in order to give Pid more time to register its name
+    timer:sleep(200),
+
+    Node = node(Pid),
+    if
+	Node==node() ->
+	    case erlang:process_info(Pid, registered_name) of
+		{registered_name, Name} -> Name;
+		_ -> undefined
+	    end;
+	true ->
+	    case rpc:call(Node,erlang,process_info,
+			  [Pid,registered_name]) of
+		{registered_name, Name} -> Name;
+		_ -> undefined
+	    end
+    end.
+
+trace_function(State) ->
+    {dbg_ui_trace, start, [State#state.tracewin,State#state.backtrace]}.