From 27275b4059621d5c7d5f9e3b14ab333d2362aee1 Mon Sep 17 00:00:00 2001 From: Dan Gudmundsson Date: Mon, 16 Jan 2012 14:47:44 +0100 Subject: [observer] Fix refresh dead process crash Reported by Pailleau Eric --- lib/observer/src/observer_procinfo.erl | 101 ++++++++++++++++++++------------- 1 file changed, 61 insertions(+), 40 deletions(-) (limited to 'lib/observer') diff --git a/lib/observer/src/observer_procinfo.erl b/lib/observer/src/observer_procinfo.erl index a4c5914c49..ec08d3aff1 100644 --- a/lib/observer/src/observer_procinfo.erl +++ b/lib/observer/src/observer_procinfo.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2011. All Rights Reserved. +%% Copyright Ericsson AB 2011-2012. 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 @@ -124,9 +124,14 @@ code_change(_, _, State) -> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% init_process_page(Panel, Pid) -> - Fields = process_info_fields(Pid), - {FPanel, _, UpFields} = observer_lib:display_info(Panel, Fields), - {FPanel, fun() -> observer_lib:update_info(UpFields, process_info_fields(Pid)) end}. + Fields0 = process_info_fields(Pid), + {FPanel, _, UpFields} = observer_lib:display_info(Panel, Fields0), + {FPanel, fun() -> case process_info_fields(Pid) of + Fields when is_list(Fields) -> + observer_lib:update_info(UpFields, Fields); + _ -> ok + end + end}. init_text_page(Parent) -> Style = ?wxTE_MULTILINE bor ?wxTE_RICH2 bor ?wxTE_READONLY, @@ -144,16 +149,20 @@ init_message_page(Parent, Pid) -> Number+1} end, Update = fun() -> - {messages,RawMessages} = - observer_wx:try_rpc(node(Pid), erlang, process_info, [Pid, messages]), - {Messages,_} = lists:mapfoldl(Format, 1, RawMessages), - Last = wxTextCtrl:getLastPosition(Text), - wxTextCtrl:remove(Text, 0, Last), - case Messages =:= [] of - true -> - wxTextCtrl:writeText(Text, "No messages"); - false -> - wxTextCtrl:writeText(Text, Messages) + case observer_wx:try_rpc(node(Pid), erlang, process_info, + [Pid, messages]) + of + {messages,RawMessages} -> + {Messages,_} = lists:mapfoldl(Format, 1, RawMessages), + Last = wxTextCtrl:getLastPosition(Text), + wxTextCtrl:remove(Text, 0, Last), + case Messages =:= [] of + true -> + wxTextCtrl:writeText(Text, "No messages"); + false -> + wxTextCtrl:writeText(Text, Messages) + end; + _ -> ok end end, Update(), @@ -162,12 +171,15 @@ init_message_page(Parent, Pid) -> init_dict_page(Parent, Pid) -> Text = init_text_page(Parent), Update = fun() -> - {dictionary,RawDict} = - observer_wx:try_rpc(node(Pid), erlang, process_info, [Pid, dictionary]), - Dict = [io_lib:format("~-20.w ~p~n", [K, V]) || {K, V} <- RawDict], - Last = wxTextCtrl:getLastPosition(Text), - wxTextCtrl:remove(Text, 0, Last), - wxTextCtrl:writeText(Text, Dict) + case observer_wx:try_rpc(node(Pid), erlang, process_info, [Pid, dictionary]) + of + {dictionary,RawDict} -> + Dict = [io_lib:format("~-20.w ~p~n", [K, V]) || {K, V} <- RawDict], + Last = wxTextCtrl:getLastPosition(Text), + wxTextCtrl:remove(Text, 0, Last), + wxTextCtrl:writeText(Text, Dict); + _ -> ok + end end, Update(), {Text, Update}. @@ -183,24 +195,29 @@ init_stack_page(Parent, Pid) -> wxListCtrl:setColumnWidth(LCtrl, 1, 300), wxListItem:destroy(Li), Update = fun() -> - {current_stacktrace,RawBt} = - observer_wx:try_rpc(node(Pid), erlang, process_info, - [Pid, current_stacktrace]), - wxListCtrl:deleteAllItems(LCtrl), - wx:foldl(fun({M, F, A, Info}, Row) -> - _Item = wxListCtrl:insertItem(LCtrl, Row, ""), - ?EVEN(Row) andalso - wxListCtrl:setItemBackgroundColour(LCtrl, Row, ?BG_EVEN), - wxListCtrl:setItem(LCtrl, Row, 0, observer_lib:to_str({M,F,A})), - FileLine = case Info of - [{file,File},{line,Line}] -> - io_lib:format("~s:~w", [File,Line]); - _ -> - [] - end, - wxListCtrl:setItem(LCtrl, Row, 1, FileLine), - Row+1 - end, 0, RawBt) + case observer_wx:try_rpc(node(Pid), erlang, process_info, + [Pid, current_stacktrace]) + of + {current_stacktrace,RawBt} -> + observer_wx:try_rpc(node(Pid), erlang, process_info, + [Pid, current_stacktrace]), + wxListCtrl:deleteAllItems(LCtrl), + wx:foldl(fun({M, F, A, Info}, Row) -> + _Item = wxListCtrl:insertItem(LCtrl, Row, ""), + ?EVEN(Row) andalso + wxListCtrl:setItemBackgroundColour(LCtrl, Row, ?BG_EVEN), + wxListCtrl:setItem(LCtrl, Row, 0, observer_lib:to_str({M,F,A})), + FileLine = case Info of + [{file,File},{line,Line}] -> + io_lib:format("~s:~w", [File,Line]); + _ -> + [] + end, + wxListCtrl:setItem(LCtrl, Row, 1, FileLine), + Row+1 + end, 0, RawBt); + _ -> ok + end end, Resize = fun(#wx{event=#wxSize{size={W,_}}},Ev) -> wxEvent:skip(Ev), @@ -216,7 +233,6 @@ create_menus(MenuBar) -> observer_lib:create_menus(Menus, MenuBar, new_window). process_info_fields(Pid) -> - RawInfo = observer_wx:try_rpc(node(Pid), erlang, process_info, [Pid, item_list()]), Struct = [{"Overview", [{"Initial Call", initial_call}, {"Current Function", current_function}, @@ -246,7 +262,12 @@ process_info_fields(Pid) -> {"GC Min Heap Size", {bytes, get_gc_info(min_heap_size)}}, {"GC FullSweep After", get_gc_info(fullsweep_after)} ]}], - observer_lib:fill_info(Struct, RawInfo). + case observer_wx:try_rpc(node(Pid), erlang, process_info, [Pid, item_list()]) of + RawInfo when is_list(RawInfo) -> + observer_lib:fill_info(Struct, RawInfo); + _ -> + ok + end. item_list() -> [ %% backtrace, -- cgit v1.2.3