diff options
Diffstat (limited to 'lib/observer/src')
| -rw-r--r-- | lib/observer/src/crashdump_viewer.erl | 88 |
1 files changed, 61 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) -> |