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-rw-r--r--lib/observer/src/cdv_mem_cb.erl4
-rw-r--r--lib/observer/src/crashdump_viewer.erl73
-rw-r--r--lib/observer/test/crashdump_viewer_SUITE.erl10
3 files changed, 72 insertions, 15 deletions
diff --git a/lib/observer/src/cdv_mem_cb.erl b/lib/observer/src/cdv_mem_cb.erl
index ba972d6963..abeddc7335 100644
--- a/lib/observer/src/cdv_mem_cb.erl
+++ b/lib/observer/src/cdv_mem_cb.erl
@@ -77,6 +77,10 @@ fix_alloc([{Title,Columns,Data}|Tables]) ->
fix_alloc(Tables)];
fix_alloc([{Title,[{_,V}|_]=Data}|Tables]) ->
fix_alloc([{Title,lists:duplicate(length(V),[]),Data}|Tables]);
+fix_alloc([{"",[]}|Tables]) -> % no name and no data, probably truncated dump
+ fix_alloc(Tables);
+fix_alloc([{Title,[]=Data}|Tables]) -> % no data, probably truncated dump
+ fix_alloc([{Title,[],Data}|Tables]);
fix_alloc([]) ->
[].
diff --git a/lib/observer/src/crashdump_viewer.erl b/lib/observer/src/crashdump_viewer.erl
index 9268dac180..2f9f81104a 100644
--- a/lib/observer/src/crashdump_viewer.erl
+++ b/lib/observer/src/crashdump_viewer.erl
@@ -90,6 +90,7 @@
%% All possible tags - use macros in order to avoid misspelling in the code
+-define(abort,abort).
-define(allocated_areas,allocated_areas).
-define(allocator,allocator).
-define(atoms,atoms).
@@ -321,8 +322,16 @@ handle_call(general_info,_From,State=#state{file=File}) ->
NumAtoms = GenInfo#general_info.num_atoms,
WS = parse_vsn_str(GenInfo#general_info.system_vsn,4),
TW = case get(truncated) of
- true -> ["WARNING: The crash dump is truncated. "
- "Some information might be missing."];
+ true ->
+ case get(truncated_reason) of
+ undefined ->
+ ["WARNING: The crash dump is truncated. "
+ "Some information might be missing."];
+ Reason ->
+ ["WARNING: The crash dump is truncated "
+ "("++Reason++"). "
+ "Some information might be missing."]
+ end;
false -> []
end,
ets:insert(cdv_reg_proc_table,
@@ -515,8 +524,15 @@ truncated_warning([Tag|Tags]) ->
false -> truncated_warning(Tags)
end.
truncated_warning() ->
- ["WARNING: The crash dump is truncated here. "
- "Some information might be missing."].
+ case get(truncated_reason) of
+ undefined ->
+ ["WARNING: The crash dump is truncated here. "
+ "Some information might be missing."];
+ Reason ->
+ ["WARNING: The crash dump is truncated here "
+ "("++Reason++"). "
+ "Some information might be missing."]
+ end.
truncated_here(Tag) ->
case get(truncated) of
@@ -692,6 +708,7 @@ val(Fd, NoExist) ->
{eof,[]} -> NoExist;
[] -> NoExist;
{eof,Val} -> Val;
+ "=abort:"++_ -> NoExist;
Val -> Val
end.
@@ -787,7 +804,7 @@ do_read_file(File) ->
?erl_crash_dump ->
reset_index_table(),
insert_index(Tag,Id,N1+1),
- put(last_tag,{Tag,""}),
+ put_last_tag(Tag,""),
indexify(Fd,Rest,N1),
end_progress(),
check_if_truncated(),
@@ -831,7 +848,7 @@ indexify(Fd,Bin,N) ->
<<_:Pos/binary,TagAndRest/binary>> = Bin,
{Tag,Id,Rest,N1} = tag(Fd,TagAndRest,N+Pos),
insert_index(Tag,Id,N1+1), % +1 to get past newline
- put(last_tag,{Tag,Id}),
+ put_last_tag(Tag,Id),
indexify(Fd,Rest,N1);
nomatch ->
case progress_read(Fd) of
@@ -1174,7 +1191,11 @@ parse_link_list("{from,"++Str,Links,Monitors,MonitoredBy) ->
parse_link_list(", "++Rest,Links,Monitors,MonitoredBy) ->
parse_link_list(Rest,Links,Monitors,MonitoredBy);
parse_link_list([],Links,Monitors,MonitoredBy) ->
- {lists:reverse(Links),lists:reverse(Monitors),lists:reverse(MonitoredBy)}.
+ {lists:reverse(Links),lists:reverse(Monitors),lists:reverse(MonitoredBy)};
+parse_link_list(Unexpected,Links,Monitors,MonitoredBy) ->
+ io:format("WARNING: found unexpected data in link list:~n~s~n",[Unexpected]),
+ parse_link_list([],Links,Monitors,MonitoredBy).
+
parse_port(Str) ->
{Port,Rest} = parse_link(Str,[]),
@@ -1813,16 +1834,16 @@ main_modinfo(_Fd,LM,_LineHead) ->
all_modinfo(Fd,LM,LineHead) ->
case LineHead of
"Current attributes" ->
- Str = hex_to_str(val(Fd)),
+ Str = hex_to_str(val(Fd,"")),
LM#loaded_mod{current_attrib=Str};
"Current compilation info" ->
- Str = hex_to_str(val(Fd)),
+ Str = hex_to_str(val(Fd,"")),
LM#loaded_mod{current_comp_info=Str};
"Old attributes" ->
- Str = hex_to_str(val(Fd)),
+ Str = hex_to_str(val(Fd,"")),
LM#loaded_mod{old_attrib=Str};
"Old compilation info" ->
- Str = hex_to_str(val(Fd)),
+ Str = hex_to_str(val(Fd,"")),
LM#loaded_mod{old_comp_info=Str};
Other ->
unexpected(Fd,Other,"loaded modules info"),
@@ -1848,7 +1869,12 @@ hex_to_term([],Acc) ->
Bin};
Term ->
Term
- end.
+ end;
+hex_to_term(Rest,Acc) ->
+ {"WARNING: The term is probably truncated!",
+ "I can not convert hex to term.",
+ Rest,list_to_binary(lists:reverse(Acc))}.
+
hex_to_dec("F") -> 15;
hex_to_dec("E") -> 14;
@@ -2159,7 +2185,8 @@ sort_allocator_types([{Name,Data}|Allocators],Acc,DoTotal) ->
Type =
case string:tokens(Name,"[]") of
[T,_Id] -> T;
- [Name] -> Name
+ [Name] -> Name;
+ Other -> Other
end,
TypeData = proplists:get_value(Type,Acc,[]),
{NewTypeData,NewDoTotal} = sort_type_data(Type,Data,TypeData,DoTotal),
@@ -2686,6 +2713,7 @@ count_index(Tag) ->
%%-----------------------------------------------------------------
%% Convert tags read from crashdump to atoms used as first part of key
%% in cdv_dump_index_table
+tag_to_atom("abort") -> ?abort;
tag_to_atom("allocated_areas") -> ?allocated_areas;
tag_to_atom("allocator") -> ?allocator;
tag_to_atom("atoms") -> ?atoms;
@@ -2720,6 +2748,14 @@ tag_to_atom(UnknownTag) ->
list_to_atom(UnknownTag).
%%%-----------------------------------------------------------------
+%%% Store last tag for use when truncated, and reason if aborted
+put_last_tag(?abort,Reason) ->
+ %% Don't overwrite the real last tag
+ put(truncated_reason,Reason);
+put_last_tag(Tag,Id) ->
+ put(last_tag,{Tag,Id}).
+
+%%%-----------------------------------------------------------------
%%% Fetch next chunk from crashdump file
lookup_and_parse_index(File,What,ParseFun,Str) when is_list(File) ->
Indices = lookup_index(What),
@@ -2815,7 +2851,16 @@ collect(Pids,Acc) ->
update_progress(),
collect(Pids,Acc);
{'DOWN', _Ref, process, Pid, {pmap_done,Result}} ->
- collect(lists:delete(Pid,Pids),[Result|Acc])
+ collect(lists:delete(Pid,Pids),[Result|Acc]);
+ {'DOWN', _Ref, process, Pid, _Error} ->
+ Warning =
+ "WARNING: an error occured while parsing data.\n" ++
+ case get(truncated) of
+ true -> "This might be because the dump is truncated.\n";
+ false -> ""
+ end,
+ io:format(Warning),
+ collect(lists:delete(Pid,Pids),Acc)
end.
%%%-----------------------------------------------------------------
diff --git a/lib/observer/test/crashdump_viewer_SUITE.erl b/lib/observer/test/crashdump_viewer_SUITE.erl
index 73ed890802..8df69c6624 100644
--- a/lib/observer/test/crashdump_viewer_SUITE.erl
+++ b/lib/observer/test/crashdump_viewer_SUITE.erl
@@ -420,6 +420,10 @@ special(File,Procs) ->
%% ".trunc" ->
%% %% ????
%% ok;
+ ".trunc.bytes" ->
+ {ok,_,[TW]} = crashdump_viewer:general_info(),
+ {match,_} = re:run(TW,"CRASH DUMP SIZE LIMIT REACHED"),
+ ok;
_ ->
ok
end,
@@ -481,7 +485,11 @@ do_create_dumps(DataDir,Rel) ->
current ->
CD3 = dump_with_args(DataDir,Rel,"instr","+Mim true"),
CD4 = dump_with_strange_module_name(DataDir,Rel,"strangemodname"),
- {[CD1,CD2,CD3,CD4], DosDump};
+ Bytes = rand:uniform(300000) + 100,
+ CD5 = dump_with_args(DataDir,Rel,"trunc.bytes",
+ "-env ERL_CRASH_DUMP_BYTES " ++
+ integer_to_list(Bytes)),
+ {[CD1,CD2,CD3,CD4,CD5], DosDump};
_ ->
{[CD1,CD2], DosDump}
end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 22:05:59 +0000