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-rw-r--r--lib/observer/src/crashdump_viewer.erl88
-rw-r--r--lib/observer/test/crashdump_viewer_SUITE.erl3
2 files changed, 64 insertions, 27 deletions
diff --git a/lib/observer/src/crashdump_viewer.erl b/lib/observer/src/crashdump_viewer.erl
index 9f68fee942..f7c44628cf 100644
--- a/lib/observer/src/crashdump_viewer.erl
+++ b/lib/observer/src/crashdump_viewer.erl
@@ -748,32 +748,6 @@ get_rest_of_line_1(Fd, <<>>, Acc) ->
eof -> {eof,lists:reverse(Acc)}
end.
-get_lines_to_empty(Fd) ->
- case get_chunk(Fd) of
- {ok,Bin} ->
- get_lines_to_empty(Fd,Bin,[],[]);
- eof ->
- []
- end.
-get_lines_to_empty(Fd,<<$\n:8,Bin/binary>>,[],Lines) ->
- put_chunk(Fd,Bin),
- lists:reverse(Lines);
-get_lines_to_empty(Fd,<<$\n:8,Bin/binary>>,Acc,Lines) ->
- get_lines_to_empty(Fd,Bin,[],[byte_list_to_string(lists:reverse(Acc))|Lines]);
-get_lines_to_empty(Fd,<<$\r:8,Bin/binary>>,Acc,Lines) ->
- get_lines_to_empty(Fd,Bin,Acc,Lines);
-get_lines_to_empty(Fd,<<$\s:8,Bin/binary>>,[],Lines) ->
- get_lines_to_empty(Fd,Bin,[],Lines);
-get_lines_to_empty(Fd,<<Char:8,Bin/binary>>,Acc,Lines) ->
- get_lines_to_empty(Fd,Bin,[Char|Acc],Lines);
-get_lines_to_empty(Fd,<<>>,Acc,Lines) ->
- case get_chunk(Fd) of
- {ok,Bin} ->
- get_lines_to_empty(Fd,Bin,Acc,Lines);
- eof ->
- lists:reverse(Lines,[byte_list_to_string(lists:reverse(Acc))])
- end.
-
split(Str) ->
split($ ,Str,[]).
split(Char,Str) ->
@@ -1182,7 +1156,7 @@ all_procinfo(Fd,Fun,Proc,WS,LineHead) ->
get_procinfo(Fd,Fun,Proc#proc{old_heap_end=bytes(Fd)},WS);
%% - END - moved from get_procinfo -
"Last calls" ->
- get_procinfo(Fd,Fun,Proc#proc{last_calls=get_lines_to_empty(Fd)},WS);
+ get_procinfo(Fd,Fun,Proc#proc{last_calls=get_last_calls(Fd)},WS);
"Link list" ->
{Links,Monitors,MonitoredBy} = parse_link_list(bytes(Fd),[],[],[]),
get_procinfo(Fd,Fun,Proc#proc{links=Links,
@@ -1206,6 +1180,66 @@ all_procinfo(Fd,Fun,Proc,WS,LineHead) ->
get_procinfo(Fd,Fun,Proc,WS)
end.
+%% The end of the 'Last calls' section is meant to be an empty line,
+%% but in some cases this is not the case, so we also need to look for
+%% the next heading which currently (OTP-20.1) can be "Link list: ",
+%% "Dictionary: " or "Reductions: ". We do this by looking for ": "
+%% and when found, pushing the heading back into the saved chunk.
+%%
+%% Note that the 'Last calls' section is only present if the
+%% 'save_calls' process flag is set.
+get_last_calls(Fd) ->
+ case get_chunk(Fd) of
+ {ok,Bin} ->
+ get_last_calls(Fd,Bin,[],[]);
+ eof ->
+ []
+ end.
+get_last_calls(Fd,<<$\n:8,Bin/binary>>,[],Lines) ->
+ %% Empty line - we're done
+ put_chunk(Fd,Bin),
+ lists:reverse(Lines);
+get_last_calls(Fd,<<$::8>>,Acc,Lines) ->
+ case get_chunk(Fd) of
+ {ok,Bin} ->
+ %% Could be a colon followed by a space - see next function clause
+ get_last_calls(Fd,<<$::8,Bin/binary>>,Acc,Lines);
+ eof ->
+ %% Truncated here - either we've got the next heading, or
+ %% it was truncated in a last call function, in which case
+ %% we note that it was truncated
+ case byte_list_to_string(lists:reverse(Acc)) of
+ NextHeading when NextHeading=="Link list";
+ NextHeading=="Dictionary";
+ NextHeading=="Reductions" ->
+ put_chunk(Fd,list_to_binary(NextHeading++":")),
+ lists:reverse(Lines);
+ LastCallFunction->
+ lists:reverse(Lines,[LastCallFunction++":...(truncated)"])
+ end
+ end;
+get_last_calls(Fd,<<$\::8,$\s:8,Bin/binary>>,Acc,Lines) ->
+ %% ": " - means we have the next heading in Acc - save it back
+ %% into the chunk and return the lines we've found
+ HeadingBin = list_to_binary(lists:reverse(Acc,[$:])),
+ put_chunk(Fd,<<HeadingBin/binary,Bin/binary>>),
+ lists:reverse(Lines);
+get_last_calls(Fd,<<$\n:8,Bin/binary>>,Acc,Lines) ->
+ get_last_calls(Fd,Bin,[],[byte_list_to_string(lists:reverse(Acc))|Lines]);
+get_last_calls(Fd,<<$\r:8,Bin/binary>>,Acc,Lines) ->
+ get_last_calls(Fd,Bin,Acc,Lines);
+get_last_calls(Fd,<<$\s:8,Bin/binary>>,[],Lines) ->
+ get_last_calls(Fd,Bin,[],Lines);
+get_last_calls(Fd,<<Char:8,Bin/binary>>,Acc,Lines) ->
+ get_last_calls(Fd,Bin,[Char|Acc],Lines);
+get_last_calls(Fd,<<>>,Acc,Lines) ->
+ case get_chunk(Fd) of
+ {ok,Bin} ->
+ get_last_calls(Fd,Bin,Acc,Lines);
+ eof ->
+ lists:reverse(Lines,[byte_list_to_string(lists:reverse(Acc))])
+ end.
+
parse_link_list([SB|Str],Links,Monitors,MonitoredBy) when SB==$[; SB==$] ->
parse_link_list(Str,Links,Monitors,MonitoredBy);
parse_link_list("#Port"++_=Str,Links,Monitors,MonitoredBy) ->
diff --git a/lib/observer/test/crashdump_viewer_SUITE.erl b/lib/observer/test/crashdump_viewer_SUITE.erl
index 77cf086d4b..4b0127bcfb 100644
--- a/lib/observer/test/crashdump_viewer_SUITE.erl
+++ b/lib/observer/test/crashdump_viewer_SUITE.erl
@@ -364,6 +364,9 @@ special(File,Procs) ->
crashdump_viewer:expand_binary({SOffset,SSize,SPos}),
io:format(" expand binary ok",[]),
+ #proc{last_calls=LastCalls} = ProcDetails,
+ true = length(LastCalls) =< 4,
+
['#CDVPid',X1,Y1,Z1] = proplists:get_value(ext_pid,Dict),
ChannelStr1 = integer_to_list(X1),
ExtPid =