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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2011. 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(observer_perf_wx).
+
+-export([start_link/2]).
+
+%% wx_object callbacks
+-export([init/1, handle_info/2, terminate/2, code_change/3, handle_call/3,
+ handle_event/2, handle_sync_event/3, handle_cast/2]).
+
+-behaviour(wx_object).
+-include_lib("wx/include/wx.hrl").
+-include("observer_defs.hrl").
+
+-compile(export_all).
+
+-record(state,
+ {
+ parent,
+ windows,
+ data = {0, queue:new()},
+ panel,
+ paint,
+ appmon
+ }).
+
+-record(paint, {font, pen, pens}).
+
+-define(RQ_W, 1).
+-define(MEM_W, 2).
+-define(IO_W, 3).
+
+start_link(Notebook, Parent) ->
+ wx_object:start_link(?MODULE, [Notebook, Parent], []).
+
+init([Notebook, Parent]) ->
+ try
+ Panel = wxPanel:new(Notebook),
+ %% wxWindow:setBackgroundColour(Panel, {222,222,222}),
+ Main = wxBoxSizer:new(?wxVERTICAL),
+
+ CPU = wxPanel:new(Panel, [{winid, ?RQ_W}, {style,?wxFULL_REPAINT_ON_RESIZE}]),
+ wxWindow:setBackgroundColour(CPU, ?wxWHITE),
+ wxSizer:add(Main, CPU, [{flag, ?wxEXPAND bor ?wxALL},
+ {proportion, 1}, {border, 5}]),
+ MemIO = wxBoxSizer:new(?wxHORIZONTAL),
+ MEM = wxPanel:new(Panel, [{winid, ?MEM_W}, {style,?wxFULL_REPAINT_ON_RESIZE}]),
+ wxWindow:setBackgroundColour(MEM, ?wxWHITE),
+ IO = wxPanel:new(Panel, [{winid, ?IO_W}, {style,?wxFULL_REPAINT_ON_RESIZE}]),
+ wxWindow:setBackgroundColour(IO, ?wxWHITE),
+ wxSizer:add(MemIO, MEM, [{flag, ?wxEXPAND bor ?wxLEFT},
+ {proportion, 1}, {border, 5}]),
+ wxSizer:add(MemIO, IO, [{flag, ?wxEXPAND bor ?wxLEFT bor ?wxRIGHT},
+ {proportion, 1}, {border, 5}]),
+ wxSizer:add(Main, MemIO, [{flag, ?wxEXPAND bor ?wxDOWN},
+ {proportion, 1}, {border, 5}]),
+ wxWindow:setSizer(Panel, Main),
+
+ wxPanel:connect(CPU, paint, [callback]),
+ wxPanel:connect(IO, paint, [callback]),
+ wxPanel:connect(MEM, paint, [callback]),
+ % wxPanel:connect(DrawingArea, size, [{skip, true}]),
+
+ DefFont = wxSystemSettings:getFont(?wxSYS_DEFAULT_GUI_FONT),
+ Cols = [{220, 50, 50}, {220, 50, 220}, {50, 50, 220},
+ {50, 220, 220}, {50, 220, 50}, {220, 220, 50}],
+ Pens = [wxPen:new(Col) || Col <- Cols],
+ %% GC = wxGraphicsContext:create(DrawingArea),
+ %% _Font = wxGraphicsContext:createFont(GC, DefFont),
+ {Panel, #state{parent=Parent,
+ panel =Panel,
+ windows = {CPU, MEM, IO},
+ paint=#paint{font= DefFont,
+ pen = ?wxBLACK_PEN,
+ pens = list_to_tuple(Pens)
+ }
+ }}
+ catch _:Err ->
+ io:format("~p crashed ~p: ~p~n",[?MODULE, Err, erlang:get_stacktrace()]),
+ {error, Err}
+ end.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%% handle_event(#wx{id=Id, event=_Sz=#wxSize{size=Size}},
+%% State=#state{}) ->
+%% %% Id =:= ?DRAWAREA andalso setup_scrollbar(Size,AppWin,App),
+%% {noreply, State};
+
+handle_event(#wx{event=#wxCommand{type=command_menu_selected}},
+ State = #state{}) ->
+ {noreply, State};
+
+handle_event(Event, _State) ->
+ error({unhandled_event, Event}).
+
+%%%%%%%%%%
+handle_sync_event(#wx{id=Id, event = #wxPaint{}},_,
+ #state{paint=Paint, windows=Windows, data=Data}) ->
+ %% PaintDC must be created in a callback to work on windows.
+ Panel = element(Id, Windows),
+ DC = wxPaintDC:new(Panel),
+ %% Nothing is drawn until wxPaintDC is destroyed.
+ try draw(Id, DC, Panel, Paint, Data)
+ catch _:Err ->
+ io:format("Crash ~p ~p~n",[Err, erlang:get_stacktrace()])
+ end,
+ wxPaintDC:destroy(DC),
+ ok.
+%%%%%%%%%%
+handle_call(Event, From, _State) ->
+ error({unhandled_call, Event, From}).
+
+handle_cast(Event, _State) ->
+ error({unhandled_cast, Event}).
+%%%%%%%%%%
+handle_info(Stats = {stats, 1, _, _, _}, State = #state{panel=Panel, data=Data}) ->
+ wxWindow:refresh(Panel),
+ {noreply, State#state{data = add_data(Stats, Data)}};
+
+handle_info({active, Node}, State = #state{parent=Parent, appmon=Old}) ->
+ create_menus(Parent, []),
+ try
+ Node = node(Old),
+ {noreply, State}
+ catch _:_ ->
+ catch Old ! exit,
+ Me = self(),
+ Pid = spawn_link(Node, fun() -> fetch_stats(Me) end),
+ {noreply, State#state{appmon=Pid, data={0, queue:new()}}}
+ end;
+
+handle_info(not_active, State = #state{appmon=_Pid}) ->
+ %% Pid ! exit,
+ {noreply, State};
+
+handle_info(_Event, State) ->
+ io:format("~p:~p: ~p~n",[?MODULE,?LINE,_Event]),
+ {noreply, State}.
+
+%%%%%%%%%%
+terminate(_Event, #state{appmon=Pid}) ->
+ Pid ! exit,
+ ok.
+code_change(_, _, State) ->
+ State.
+
+add_data(Stats, {N, Q}) when N > 60 ->
+ {N, queue:drop(queue:in(Stats, Q))};
+add_data(Stats, {N, Q}) ->
+ {N+1, queue:in(Stats, Q)}.
+
+fetch_stats(Parent) ->
+ receive
+ exit -> normal
+ after 1000 ->
+ M = Parent ! {stats, 1,
+ erlang:statistics(run_queues),
+ erlang:statistics(io),
+ erlang:memory()},
+ %% io:format("IO ~p~n",[element(4,M)]),
+ fetch_stats(Parent)
+ end.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+create_menus(Parent, _) ->
+ MenuEntries =
+ [{"File",
+ [
+ ]}
+ ],
+ observer_wx:create_menus(Parent, MenuEntries).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+collect_data(?RQ_W, {N, Q}) ->
+ Data = [RQ || {stats, _Ver, RQ, _IO, _Mem} <- queue:to_list(Q)],
+ {N, lmax(Data), Data};
+collect_data(?MEM_W, {N, Q}) ->
+ Data = [{Mem} || {stats, _Ver, _RQ, _IO, Mem} <- queue:to_list(Q)],
+ {N, {bytes, lmax(Data)}, Data};
+collect_data(?IO_W, {N, Q}) ->
+ case queue:to_list(Q) of
+ [] -> {0, 0, []};
+ [_] -> {0, 0, []};
+ [{stats, _Ver, _RQ, {{_,In0}, {_,Out0}}, _Mem}|Data0] ->
+ [_,_|Data=[First|_]] =
+ lists:foldl(fun({stats, _, _, {{_,In}, {_,Out}}, _}, [PIn,Pout|Acc]) ->
+ [In,Out,{In-PIn,Out-Pout}|Acc]
+ end, [In0,Out0], Data0),
+ {N, {bytes, lmax(Data)}, lists:reverse([First|Data])}
+ end.
+
+lmax([]) -> 0;
+lmax(List) ->
+ lists:max([lists:max(tuple_to_list(T)) || T <- List]).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+draw(Id, DC, Panel, Paint=#paint{pens=Pens}, Data) ->
+ {Len, Max, Hs} = collect_data(Id, Data),
+ Size = wxWindow:getClientSize(Panel),
+ {X0,Y0,WS,HS} = draw_borders(Id, DC, Size, Max, Paint),
+ Start = max(61-Len, 0)*WS+X0,
+ case Hs of
+ [] -> ignore;
+ _ ->
+ Draw = fun(N) ->
+ Lines = make_lines(Hs, Start, N, Y0, WS, HS),
+ wxDC:setPen(DC, element(1+(N rem size(Pens)), Pens)),
+ wxDC:drawLines(DC, Lines),
+ N+1
+ end,
+ [Draw(I) || I <- lists:seq(1,tuple_size(hd(Hs)))]
+ end,
+ ok.
+
+make_lines(Ds = [Data|_], PX, N, PY, WS, HS) ->
+ Y = element(N,Data),
+ make_lines(Ds, PX, N, PY, WS, HS, Y, []).
+
+make_lines([D1 | Ds = [D2|Rest]], PX, N, PY, WS, HS, Y0, Acc0) ->
+ Y1 = element(N,D1),
+ Y2 = element(N,D2),
+ Y3 = case Rest of
+ [D3|_] -> element(N,D3);
+ [] -> Y2
+ end,
+ Acc = make_splines(Y0,Y1,Y2,Y3,PX,PY,WS,HS,[{round(PX),PY-round(Y1*HS)}|Acc0]),
+ make_lines(Ds, PX+WS, N, PY, WS, HS, Y1, Acc);
+make_lines([D1], PX, N, PY, _WS, HS, _Y0, Acc) ->
+ Y1 = element(N,D1),
+ [{round(PX),PY-round(Y1*HS)}|Acc].
+
+make_splines(_Y0,Y1,Y2,_Y3, _PX,_PY, _WS,HS, Acc)
+ when (abs(Y1-Y2) * HS) < 3.0 ->
+ Acc;
+make_splines(_Y0,_Y1,_Y2,_Y3, _PX,_PY, WS,_HS, Acc)
+ when WS < 3.0 ->
+ Acc;
+make_splines(Y00,Y10,Y20,Y30,PX,PY,WS,HS,Acc) ->
+ Y1 = Y10*HS,
+ Y2 = Y20*HS,
+ Steps = round(min(abs(Y1-Y2), WS)),
+ if Steps > 2 ->
+ Y0 = Y00*HS,
+ Y3 = Y30*HS,
+ Tan = spline_tan(Y0,Y1,Y2,Y3),
+ Delta = 1/Steps,
+ splines(Steps-1, 0.0, Delta, Tan, Y1,Y2, PX, PY, Delta*WS, Acc);
+ true ->
+ Acc
+ end.
+
+spline_tan(Y0, Y1, Y2, Y3) ->
+ S = 1.0,
+ C = 0.5,
+ %% Calc tangent values
+ M1 = S*C*(Y2-Y0),
+ M2 = S*C*(Y3-Y1),
+ {M1,M2}.
+
+splines(N, XD, XD0, Tan, Y1,Y2, PX, PY, WS, Acc) when N > 0 ->
+ Delta = XD+XD0,
+ Y = spline(Delta, Tan, Y1,Y2),
+ X = PX+WS,
+ %% io:format("Y1:~p Y(~p):~p Y2:~p~n",[round(Y1),round(X),round(Y),round(Y2)]),
+ splines(N-1, Delta, XD0, Tan, Y1, Y2, X, PY, WS, [{round(X),PY-round(Y)}|Acc]);
+splines(_N, _XD, _XD0, _Tan, _Y1,_Y2, _PX, _PY, _WS, Acc) -> Acc.
+
+spline(T, {M1, M2}, Y1, Y2) ->
+ %% Hermite Basis Funcs
+ T2 = T*T, T3 = T*T*T,
+ H1 = 2*T3-3*T2+1,
+ H2 = -2*T3+3*T2,
+ H3 = T3-2*T2+T,
+ H4 = T3-T2,
+ %% Result
+ M1*H3 + Y1*H1 + Y2*H2 + M2*H4.
+
+-define(BW, 5).
+-define(BH, 5).
+
+draw_borders(Type, DC, {W,H}, Max0, #paint{pen=Pen, font=Font}) ->
+ Max = calc_max(Max0),
+ wxDC:setPen(DC, Pen),
+ wxDC:setFont(DC, Font),
+ Str1 = observer_lib:to_str(Max),
+ Str2 = observer_lib:to_str(div2(Max)),
+ Str3 = observer_lib:to_str(0),
+ {TW,TH} = wxDC:getTextExtent(DC, Str1),
+
+ GraphX0 = ?BW+TW+?BW,
+ GraphX1 = W-?BW*4,
+ TopTextX = ?BW+TW+?BW,
+ MaxTextY = ?BH+TH+?BH,
+ BottomTextY = H-?BH-TH,
+ SecondsY = BottomTextY - ?BH - TH,
+ GraphY0 = MaxTextY + (TH div 2),
+ GraphY1 = SecondsY - ?BH,
+ GraphW = max(GraphX1-GraphX0-1, 60),
+ GraphH = max(GraphY1-GraphY0-1, 100),
+ ScaleW = GraphW / 60,
+ ScaleH = calc_scale(GraphH, Max),
+
+ case Type of
+ ?RQ_W -> wxDC:drawText(DC, "CPU History - Run queue length", {TopTextX,?BH});
+ ?MEM_W -> wxDC:drawText(DC, "Memory Usage", {TopTextX,?BH});
+ ?IO_W -> wxDC:drawText(DC, "IO Usage", {TopTextX,?BH})
+ end,
+
+ Align = fun(Str, Y) ->
+ {StrW, _} = wxDC:getTextExtent(DC, Str),
+ wxDC:drawText(DC, Str, {GraphX0 - StrW - ?BW, Y})
+ end,
+ Align(Str1, MaxTextY),
+ Align(Str2, MaxTextY - (TW div 2) + (GraphY1 - MaxTextY) div 2),
+ Align(Str3, GraphY1 - (TH div 2) + 1),
+
+ DrawSecs = fun(Secs, Pos) ->
+ Str = [observer_lib:to_str(Secs)|" s"],
+ wxDC:drawText(DC, Str, {round(GraphX0-?BH+Pos), SecondsY}),
+ Pos + 10*ScaleW
+ end,
+ lists:foldl(DrawSecs, 0, lists:seq(60,0, -10)),
+ case Type of
+ ?RQ_W -> wxDC:drawText(DC, "Scheduler", {?BW, BottomTextY});
+ ?MEM_W -> wxDC:drawText(DC, "Memory", {?BW, BottomTextY});
+ ?IO_W -> wxDC:drawText(DC, "Input Output", {?BW, BottomTextY})
+ end,
+
+ wxDC:drawLines(DC, [{GraphX0, GraphY0}, {GraphX0, GraphY1},
+ {GraphX1, GraphY1}, {GraphX1, GraphY0}, {GraphX0, GraphY0}]),
+ {GraphX0, GraphY1, ScaleW, ScaleH}.
+
+div2({Type, Int}) -> {Type, Int div 2};
+div2(Int) -> Int div 2.
+
+calc_max(Max) when Max < 10 -> 10;
+calc_max({Type, Max}) -> {Type,calc_max1(Max)};
+calc_max(Max) -> calc_max1(Max).
+
+calc_max1(Max) ->
+ case Max div 10 of
+ X when X < 10 ->
+ (X+1)*10;
+ X ->
+ 10*calc_max1(X)
+ end.
+
+calc_scale(H, {_Type, Max}) -> calc_scale(H,Max);
+calc_scale(Height, Max) when Height > Max ->
+ Height / Max;
+calc_scale(Height, Max) ->
+ Height / Max.