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-rw-r--r--lib/observer/src/ttb.erl71
1 files changed, 54 insertions, 17 deletions
diff --git a/lib/observer/src/ttb.erl b/lib/observer/src/ttb.erl
index 17520c7c84..4764098e29 100644
--- a/lib/observer/src/ttb.erl
+++ b/lib/observer/src/ttb.erl
@@ -365,24 +365,24 @@ proc({global,Name}) ->
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Trace pattern
tp(A,B) ->
- store(tp,[A,B]),
- dbg:tp(A,B).
+ store(tp,[A,ms(B)]),
+ dbg:tp(A,ms(B)).
tp(A,B,C) ->
- store(tp,[A,B,C]),
- dbg:tp(A,B,C).
+ store(tp,[A,B,ms(C)]),
+ dbg:tp(A,B,ms(C)).
tp(A,B,C,D) ->
- store(tp,[A,B,C,D]),
- dbg:tp(A,B,C,D).
+ store(tp,[A,B,C,ms(D)]),
+ dbg:tp(A,B,C,ms(D)).
tpl(A,B) ->
- store(tpl,[A,B]),
- dbg:tpl(A,B).
+ store(tpl,[A,ms(B)]),
+ dbg:tpl(A,ms(B)).
tpl(A,B,C) ->
- store(tpl,[A,B,C]),
- dbg:tpl(A,B,C).
+ store(tpl,[A,B,ms(C)]),
+ dbg:tpl(A,B,ms(C)).
tpl(A,B,C,D) ->
- store(tpl,[A,B,C,D]),
- dbg:tpl(A,B,C,D).
+ store(tpl,[A,B,C,ms(D)]),
+ dbg:tpl(A,B,C,ms(D)).
ctp() ->
store(ctp,[]),
@@ -423,6 +423,43 @@ ctpg(A,B,C) ->
store(ctpg,[A,B,C]),
dbg:ctpg(A,B,C).
+ms(return) ->
+ [{'_',[],[{return_trace}]}];
+ms(caller) ->
+ [{'_',[],[{message,{caller}}]}];
+ms({codestr, FunStr}) ->
+ {ok, MS} = string2ms(FunStr),
+ MS;
+ms(Other) ->
+ Other.
+
+-spec string2ms(string()) -> {ok, list()} | {error, fun_format}.
+string2ms(FunStr) ->
+ case erl_scan:string(fix_dot(FunStr)) of
+ {ok, Tokens, _} ->
+ case erl_parse:parse_exprs(Tokens) of
+ {ok, [Expression]} ->
+ case Expression of
+ {_, _, {clauses, Clauses}} ->
+ {ok, ms_transform:transform_from_shell(dbg, Clauses, [])};
+ _ ->
+ {error, fun_format}
+ end;
+ _ ->
+ {error, fun_format}
+ end;
+ _ ->{error, fun_format}
+ end.
+
+-spec fix_dot(string()) -> string().
+fix_dot(FunStr) ->
+ [H | Rest] = lists:reverse(FunStr),
+ case H of
+ $. ->
+ FunStr;
+ H ->
+ lists:reverse([$., H | Rest])
+ end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Support for sequential trace
@@ -471,13 +508,13 @@ stop(Opts) ->
stop_opts(Opts) ->
case {lists:member(format,Opts), lists:member(return, Opts)} of
{true, _} ->
- format;
+ format; % format implies fetch
{_, true} ->
- fetch;
+ fetch; % if we specify return, the data should be fetched
_ ->
- case lists:member(nofetch,Opts) of
- true -> nofetch;
- false -> fetch
+ case lists:member(fetch,Opts) of
+ true -> fetch;
+ false -> nofetch
end
end.