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-rw-r--r--lib/observer/src/Makefile1
-rw-r--r--lib/observer/src/cdv_html_wx.erl26
-rw-r--r--lib/observer/src/cdv_persistent_cb.erl32
-rw-r--r--lib/observer/src/cdv_wx.erl16
-rw-r--r--lib/observer/src/crashdump_viewer.erl237
-rw-r--r--lib/observer/src/observer.app.src1
-rw-r--r--lib/observer/src/observer_html_lib.erl3
7 files changed, 261 insertions, 55 deletions
diff --git a/lib/observer/src/Makefile b/lib/observer/src/Makefile
index ff2bcbdb99..f9f239db37 100644
--- a/lib/observer/src/Makefile
+++ b/lib/observer/src/Makefile
@@ -50,6 +50,7 @@ MODULES= \
cdv_mem_cb \
cdv_mod_cb \
cdv_multi_wx \
+ cdv_persistent_cb \
cdv_port_cb \
cdv_proc_cb \
cdv_sched_cb \
diff --git a/lib/observer/src/cdv_html_wx.erl b/lib/observer/src/cdv_html_wx.erl
index d9efa7fc2f..ffef83227c 100644
--- a/lib/observer/src/cdv_html_wx.erl
+++ b/lib/observer/src/cdv_html_wx.erl
@@ -33,13 +33,17 @@
{panel,
app, %% which tool is the user
expand_table,
- expand_wins=[]}).
+ expand_wins=[],
+ delayed_fetch,
+ trunc_warn=[]}).
start_link(ParentWin, Info) ->
wx_object:start_link(?MODULE, [ParentWin, Info], []).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+init([ParentWin, Callback]) when is_atom(Callback) ->
+ init(ParentWin, Callback);
init([ParentWin, {App, Fun}]) when is_function(Fun) ->
init([ParentWin, {App, Fun()}]);
init([ParentWin, {expand,HtmlText,Tab}]) ->
@@ -60,9 +64,29 @@ init(ParentWin, HtmlText, Tab, App) ->
wx_misc:endBusyCursor(),
{HtmlWin, #state{panel=HtmlWin,expand_table=Tab,app=App}}.
+init(ParentWin, Callback) ->
+ {HtmlWin, State} = init(ParentWin, "", undefined, cdv),
+ {HtmlWin, State#state{delayed_fetch=Callback}}.
+
%%%%%%%%%%%%%%%%%%%%%%% Callbacks %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+handle_info(active, #state{panel=HtmlWin,delayed_fetch=Callback}=State)
+ when Callback=/=undefined ->
+ observer_lib:display_progress_dialog(HtmlWin,
+ "Crashdump Viewer",
+ "Reading data"),
+ {{expand,HtmlText,Tab},TW} = Callback:get_info(),
+ observer_lib:sync_destroy_progress_dialog(),
+ wx_misc:beginBusyCursor(),
+ wxHtmlWindow:setPage(HtmlWin,HtmlText),
+ cdv_wx:set_status(TW),
+ wx_misc:endBusyCursor(),
+ {noreply, State#state{expand_table=Tab,
+ delayed_fetch=undefined,
+ trunc_warn=TW}};
+
handle_info(active, State) ->
+ cdv_wx:set_status(State#state.trunc_warn),
{noreply, State};
handle_info(Info, State) ->
diff --git a/lib/observer/src/cdv_persistent_cb.erl b/lib/observer/src/cdv_persistent_cb.erl
new file mode 100644
index 0000000000..d5da18f7fc
--- /dev/null
+++ b/lib/observer/src/cdv_persistent_cb.erl
@@ -0,0 +1,32 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. 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%
+
+-module(cdv_persistent_cb).
+
+-export([get_info/0]).
+
+-include_lib("wx/include/wx.hrl").
+
+get_info() ->
+ Tab = ets:new(pt_expand,[set,public]),
+ {ok,PT,TW} = crashdump_viewer:persistent_terms(),
+ {{expand,
+ observer_html_lib:expandable_term("Persistent Terms",PT,Tab),
+ Tab},
+ TW}.
diff --git a/lib/observer/src/cdv_wx.erl b/lib/observer/src/cdv_wx.erl
index 78a897111c..1e9cef8952 100644
--- a/lib/observer/src/cdv_wx.erl
+++ b/lib/observer/src/cdv_wx.erl
@@ -51,6 +51,7 @@
-define(DIST_STR, "Nodes").
-define(MOD_STR, "Modules").
-define(MEM_STR, "Memory").
+-define(PERSISTENT_STR, "Persistent Terms").
-define(INT_STR, "Internal Tables").
%% Records
@@ -74,6 +75,7 @@
dist_panel,
mod_panel,
mem_panel,
+ persistent_panel,
int_panel,
active_tab
}).
@@ -193,6 +195,10 @@ setup(#state{frame=Frame, notebook=Notebook}=State) ->
%% Memory Panel
MemPanel = add_page(Notebook, ?MEM_STR, cdv_multi_wx, cdv_mem_cb),
+ %% Persistent Terms Panel
+ PersistentPanel = add_page(Notebook, ?PERSISTENT_STR,
+ cdv_html_wx, cdv_persistent_cb),
+
%% Memory Panel
IntPanel = add_page(Notebook, ?INT_STR, cdv_multi_wx, cdv_int_tab_cb),
@@ -215,6 +221,7 @@ setup(#state{frame=Frame, notebook=Notebook}=State) ->
dist_panel = DistPanel,
mod_panel = ModPanel,
mem_panel = MemPanel,
+ persistent_panel = PersistentPanel,
int_panel = IntPanel,
active_tab = GenPid
}}.
@@ -250,6 +257,7 @@ handle_event(#wx{id = ?wxID_OPEN,
State#state.dist_panel,
State#state.mod_panel,
State#state.mem_panel,
+ State#state.persistent_panel,
State#state.int_panel],
_ = [wx_object:call(Panel,new_dump) || Panel<-Panels],
wxNotebook:setSelection(State#state.notebook,0),
@@ -343,8 +351,8 @@ check_page_title(Notebook) ->
get_active_pid(#state{notebook=Notebook, gen_panel=Gen, pro_panel=Pro,
port_panel=Ports, ets_panel=Ets, timer_panel=Timers,
fun_panel=Funs, atom_panel=Atoms, dist_panel=Dist,
- mod_panel=Mods, mem_panel=Mem, int_panel=Int,
- sched_panel=Sched
+ mod_panel=Mods, mem_panel=Mem, persistent_panel=Persistent,
+ int_panel=Int, sched_panel=Sched
}) ->
Panel = case check_page_title(Notebook) of
?GEN_STR -> Gen;
@@ -358,6 +366,7 @@ get_active_pid(#state{notebook=Notebook, gen_panel=Gen, pro_panel=Pro,
?DIST_STR -> Dist;
?MOD_STR -> Mods;
?MEM_STR -> Mem;
+ ?PERSISTENT_STR -> Persistent;
?INT_STR -> Int
end,
wx_object:get_pid(Panel).
@@ -365,7 +374,7 @@ get_active_pid(#state{notebook=Notebook, gen_panel=Gen, pro_panel=Pro,
pid2panel(Pid, #state{gen_panel=Gen, pro_panel=Pro, port_panel=Ports,
ets_panel=Ets, timer_panel=Timers, fun_panel=Funs,
atom_panel=Atoms, dist_panel=Dist, mod_panel=Mods,
- mem_panel=Mem, int_panel=Int}) ->
+ mem_panel=Mem, persistent_panel=Persistent, int_panel=Int}) ->
case Pid of
Gen -> ?GEN_STR;
Pro -> ?PRO_STR;
@@ -377,6 +386,7 @@ pid2panel(Pid, #state{gen_panel=Gen, pro_panel=Pro, port_panel=Ports,
Dist -> ?DIST_STR;
Mods -> ?MOD_STR;
Mem -> ?MEM_STR;
+ ?PERSISTENT_STR -> Persistent;
Int -> ?INT_STR;
_ -> "unknown"
end.
diff --git a/lib/observer/src/crashdump_viewer.erl b/lib/observer/src/crashdump_viewer.erl
index 14b086ff58..0627c15b1c 100644
--- a/lib/observer/src/crashdump_viewer.erl
+++ b/lib/observer/src/crashdump_viewer.erl
@@ -74,6 +74,7 @@
loaded_modules/0,
loaded_mod_details/1,
memory/0,
+ persistent_terms/0,
allocated_areas/0,
allocator_info/0,
hash_tables/0,
@@ -139,6 +140,7 @@
-define(node,node).
-define(not_connected,not_connected).
-define(old_instr_data,old_instr_data).
+-define(persistent_terms,persistent_terms).
-define(port,port).
-define(proc,proc).
-define(proc_dictionary,proc_dictionary).
@@ -293,6 +295,8 @@ loaded_mod_details(Mod) ->
call({loaded_mod_details,Mod}).
memory() ->
call(memory).
+persistent_terms() ->
+ call(persistent_terms).
allocated_areas() ->
call(allocated_areas).
allocator_info() ->
@@ -471,6 +475,11 @@ handle_call(memory,_From,State=#state{file=File}) ->
Memory=memory(File),
TW = truncated_warning([?memory]),
{reply,{ok,Memory,TW},State};
+handle_call(persistent_terms,_From,State=#state{file=File,dump_vsn=DumpVsn}) ->
+ TW = truncated_warning([?persistent_terms,?literals]),
+ DecodeOpts = get_decode_opts(DumpVsn),
+ Terms = persistent_terms(File, DecodeOpts),
+ {reply,{ok,Terms,TW},State};
handle_call(allocated_areas,_From,State=#state{file=File}) ->
AllocatedAreas=allocated_areas(File),
TW = truncated_warning([?allocated_areas]),
@@ -1444,15 +1453,7 @@ maybe_other_node2(Channel) ->
expand_memory(Fd,Pid,DumpVsn) ->
DecodeOpts = get_decode_opts(DumpVsn),
put(fd,Fd),
- Dict0 = case get(?literals) of
- undefined ->
- Literals = read_literals(Fd,DecodeOpts),
- put(?literals,Literals),
- put(fd,Fd),
- Literals;
- Literals ->
- Literals
- end,
+ Dict0 = get_literals(Fd,DecodeOpts),
Dict = read_heap(Fd,Pid,DecodeOpts,Dict0),
Expanded = {read_stack_dump(Fd,Pid,DecodeOpts,Dict),
read_messages(Fd,Pid,DecodeOpts,Dict),
@@ -1468,6 +1469,18 @@ expand_memory(Fd,Pid,DumpVsn) ->
end,
{Expanded,IncompleteWarning}.
+get_literals(Fd,DecodeOpts) ->
+ case get(?literals) of
+ undefined ->
+ OldFd = put(fd,Fd),
+ Literals = read_literals(Fd,DecodeOpts),
+ put(fd,OldFd),
+ put(?literals,Literals),
+ Literals;
+ Literals ->
+ Literals
+ end.
+
read_literals(Fd,DecodeOpts) ->
case lookup_index(?literals,[]) of
[{_,Start}] ->
@@ -1594,31 +1607,92 @@ read_heap(Fd,Pid,DecodeOpts,Dict0) ->
Dict0
end.
-read_heap(DecodeOpts,Dict0) ->
- %% This function is never called if the dump is truncated in {?proc_heap,Pid}
- case get(fd) of
- end_of_heap ->
+read_heap(DecodeOpts, Dict0) ->
+ %% This function is never called if the dump is truncated in
+ %% {?proc_heap,Pid}.
+ %%
+ %% It is not always possible to reconstruct the heap terms
+ %% in a single pass, especially if maps are involved.
+ %% See crashdump_helper:literal_map/0 for an example.
+ %%
+ %% Therefore, we need two passes. In the first pass
+ %% we collect all lines without parsing them, and in the
+ %% second pass we parse them.
+ %%
+ %% The first pass follows.
+
+ Lines0 = read_heap_lines(),
+
+ %% Save a map of all unprocessed lines so that deref_ptr() can
+ %% access any line when there are references to terms not yet
+ %% built.
+
+ LineMap = maps:from_list(Lines0),
+ put(line_map, LineMap),
+
+ %% Refc binaries (tag "Yc") must be processed before any sub
+ %% binaries (tag "Ys") referencing them, so we make sure to
+ %% process all the refc binaries first.
+ %%
+ %% The other lines can be processed in any order, but processing
+ %% them in the reverse order compared to how they are printed in
+ %% the crash dump seems to minimize the number of references to
+ %% terms that have not yet been built. That happens to be the
+ %% order of the line list as returned by read_heap_lines/0.
+
+ RefcBins = [Refc || {_,<<"Yc",_/binary>>}=Refc <- Lines0],
+ Lines = RefcBins ++ Lines0,
+
+ %% Second pass.
+
+ init_progress("Processing terms", map_size(LineMap)),
+ Dict = parse_heap_terms(Lines, DecodeOpts, Dict0),
+ erase(line_map),
+ end_progress(),
+ Dict.
+
+read_heap_lines() ->
+ read_heap_lines_1(get(fd), []).
+
+read_heap_lines_1(Fd, Acc) ->
+ case bytes(Fd) of
+ "=" ++ _next_tag ->
end_progress(),
- Dict0;
- Fd ->
- case bytes(Fd) of
- "=" ++ _next_tag ->
- end_progress(),
- put(fd, end_of_heap),
- Dict0;
- Line ->
- update_progress(length(Line)+1),
- Dict = parse(Line,DecodeOpts,Dict0),
- read_heap(DecodeOpts,Dict)
- end
+ put(fd, end_of_heap),
+ Acc;
+ Line0 ->
+ update_progress(length(Line0)+1),
+ {Addr,":"++Line1} = get_hex(Line0),
+
+ %% Reduce the memory consumption by converting the
+ %% line to a binary. Measurements show that it may also
+ %% be benefical for performance, too, because it makes the
+ %% garbage collections cheaper.
+
+ Line = list_to_binary(Line1),
+ read_heap_lines_1(Fd, [{Addr,Line}|Acc])
end.
-parse(Line0, DecodeOpts, Dict0) ->
- {Addr,":"++Line1} = get_hex(Line0),
- {_Term,Line,Dict} = parse_heap_term(Line1, Addr, DecodeOpts, Dict0),
- [] = skip_blanks(Line),
+parse_heap_terms([{Addr,Line0}|T], DecodeOpts, Dict0) ->
+ case gb_trees:is_defined(Addr, Dict0) of
+ true ->
+ %% Already parsed (by a recursive call from do_deref_ptr()
+ %% to parse_line()). Nothing to do.
+ parse_heap_terms(T, DecodeOpts, Dict0);
+ false ->
+ %% Parse this previously unparsed term.
+ Dict = parse_line(Addr, Line0, DecodeOpts, Dict0),
+ parse_heap_terms(T, DecodeOpts, Dict)
+ end;
+parse_heap_terms([], _DecodeOpts, Dict) ->
Dict.
+parse_line(Addr, Line0, DecodeOpts, Dict0) ->
+ update_progress(1),
+ Line1 = binary_to_list(Line0),
+ {_Term,Line,Dict} = parse_heap_term(Line1, Addr, DecodeOpts, Dict0),
+ [] = skip_blanks(Line), %Assertion.
+ Dict.
%%-----------------------------------------------------------------
%% Page with one port
@@ -2142,6 +2216,56 @@ get_atom(Atom) when is_binary(Atom) ->
{Atom,nq}. % not quoted
%%-----------------------------------------------------------------
+%% Page with list of all persistent terms
+persistent_terms(File, DecodeOpts) ->
+ case lookup_index(?persistent_terms) of
+ [{_Id,Start}] ->
+ Fd = open(File),
+ pos_bof(Fd,Start),
+ Terms = get_persistent_terms(Fd),
+ Dict = get_literals(Fd,DecodeOpts),
+ parse_persistent_terms(Terms,DecodeOpts,Dict);
+ _ ->
+ []
+ end.
+
+parse_persistent_terms([[Name0,Val0]|Terms],DecodeOpts,Dict) ->
+ {Name,_,_} = parse_term(binary_to_list(Name0),DecodeOpts,Dict),
+ {Val,_,_} = parse_term(binary_to_list(Val0),DecodeOpts,Dict),
+ [{Name,Val}|parse_persistent_terms(Terms,DecodeOpts,Dict)];
+parse_persistent_terms([],_,_) -> [].
+
+get_persistent_terms(Fd) ->
+ case get_chunk(Fd) of
+ {ok,Bin} ->
+ get_persistent_terms(Fd,Bin,[]);
+ eof ->
+ []
+ end.
+
+
+%% Persistent_Terms are written one per line in the crash dump.
+get_persistent_terms(Fd,Bin,PersistentTerms) ->
+ Bins = binary:split(Bin,<<"\n">>,[global]),
+ get_persistent_terms1(Fd,Bins,PersistentTerms).
+
+get_persistent_terms1(_Fd,[<<"=",_/binary>>|_],PersistentTerms) ->
+ PersistentTerms;
+get_persistent_terms1(Fd,[LastBin],PersistentTerms) ->
+ case get_chunk(Fd) of
+ {ok,Bin0} ->
+ get_persistent_terms(Fd,<<LastBin/binary,Bin0/binary>>,PersistentTerms);
+ eof ->
+ [get_persistent_term(LastBin)|PersistentTerms]
+ end;
+get_persistent_terms1(Fd,[Bin|Bins],Persistent_Terms) ->
+ get_persistent_terms1(Fd,Bins,[get_persistent_term(Bin)|Persistent_Terms]).
+
+get_persistent_term(Bin) ->
+ binary:split(Bin,<<"|">>).
+
+
+%%-----------------------------------------------------------------
%% Page with memory information
memory(File) ->
case lookup_index(?memory) of
@@ -2871,16 +2995,18 @@ parse_atom_translation_table(N, Line0, As) ->
deref_ptr(Ptr, Line, DecodeOpts, D) ->
- Lookup = fun(D0) ->
- gb_trees:lookup(Ptr, D0)
- end,
+ Lookup0 = fun(D0) ->
+ gb_trees:lookup(Ptr, D0)
+ end,
+ Lookup = wrap_line_map(Ptr, Lookup0),
do_deref_ptr(Lookup, Line, DecodeOpts, D).
deref_bin(Binp0, Offset, Sz, Line, DecodeOpts, D) ->
Binp = Binp0 bor DecodeOpts#dec_opts.bin_addr_adj,
- Lookup = fun(D0) ->
- lookup_binary(Binp, Offset, Sz, D0)
- end,
+ Lookup0 = fun(D0) ->
+ lookup_binary(Binp, Offset, Sz, D0)
+ end,
+ Lookup = wrap_line_map(Binp, Lookup0),
do_deref_ptr(Lookup, Line, DecodeOpts, D).
lookup_binary(Binp, Offset, Sz, D) ->
@@ -2899,26 +3025,36 @@ lookup_binary(Binp, Offset, Sz, D) ->
end
end.
+wrap_line_map(Ptr, Lookup) ->
+ wrap_line_map_1(get(line_map), Ptr, Lookup).
+
+wrap_line_map_1(#{}=LineMap, Ptr, Lookup) ->
+ fun(D) ->
+ case Lookup(D) of
+ {value,_}=Res ->
+ Res;
+ none ->
+ case LineMap of
+ #{Ptr:=Line} ->
+ {line,Ptr,Line};
+ #{} ->
+ none
+ end
+ end
+ end;
+wrap_line_map_1(undefined, _Ptr, Lookup) ->
+ Lookup.
+
do_deref_ptr(Lookup, Line, DecodeOpts, D0) ->
case Lookup(D0) of
{value,Term} ->
{Term,Line,D0};
none ->
- case get(fd) of
- end_of_heap ->
- put(incomplete_heap,true),
- {['#CDVIncompleteHeap'],Line,D0};
- Fd ->
- case bytes(Fd) of
- "="++_ ->
- put(fd, end_of_heap),
- do_deref_ptr(Lookup, Line, DecodeOpts, D0);
- L ->
- update_progress(length(L)+1),
- D = parse(L, DecodeOpts, D0),
- do_deref_ptr(Lookup, Line, DecodeOpts, D)
- end
- end
+ put(incomplete_heap, true),
+ {['#CDVIncompleteHeap'],Line,D0};
+ {line,Addr,NewLine} ->
+ D = parse_line(Addr, NewLine, DecodeOpts, D0),
+ do_deref_ptr(Lookup, Line, DecodeOpts, D)
end.
get_hex(L) ->
@@ -3119,6 +3255,7 @@ tag_to_atom("literals") -> ?literals;
tag_to_atom("loaded_modules") -> ?loaded_modules;
tag_to_atom("memory") -> ?memory;
tag_to_atom("mod") -> ?mod;
+tag_to_atom("persistent_terms") -> ?persistent_terms;
tag_to_atom("no_distribution") -> ?no_distribution;
tag_to_atom("node") -> ?node;
tag_to_atom("not_connected") -> ?not_connected;
diff --git a/lib/observer/src/observer.app.src b/lib/observer/src/observer.app.src
index d73293a5f9..d48b846ad2 100644
--- a/lib/observer/src/observer.app.src
+++ b/lib/observer/src/observer.app.src
@@ -34,6 +34,7 @@
cdv_mem_cb,
cdv_mod_cb,
cdv_multi_wx,
+ cdv_persistent_cb,
cdv_port_cb,
cdv_proc_cb,
cdv_table_wx,
diff --git a/lib/observer/src/observer_html_lib.erl b/lib/observer/src/observer_html_lib.erl
index 0c4e32af49..c67fa28c6d 100644
--- a/lib/observer/src/observer_html_lib.erl
+++ b/lib/observer/src/observer_html_lib.erl
@@ -62,7 +62,8 @@ expandable_term_body(Heading,[],_Tab) ->
"Dictionary" -> "No dictionary was found";
"ProcState" -> "Information could not be retrieved,"
" system messages may not be handled by this process.";
- "SaslLog" -> "No log entry was found"
+ "SaslLog" -> "No log entry was found";
+ "Persistent Terms" -> "No persistent terms were found"
end];
expandable_term_body(Heading,Expanded,Tab) ->
Attr = "BORDER=0 CELLPADDING=0 CELLSPACING=1 WIDTH=100%",
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 11:11:38 +0000