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-rw-r--r--lib/runtime_tools/src/Makefile15
-rw-r--r--lib/runtime_tools/src/dbg.erl65
-rw-r--r--lib/runtime_tools/src/dyntrace.erl279
-rw-r--r--lib/runtime_tools/src/erts_alloc_config.erl12
-rw-r--r--lib/runtime_tools/src/inviso_rt.erl4
-rw-r--r--lib/runtime_tools/src/inviso_rt_lib.erl18
-rw-r--r--lib/runtime_tools/src/observer_backend.erl356
-rw-r--r--lib/runtime_tools/src/runtime_tools.app.src5
-rw-r--r--lib/runtime_tools/src/runtime_tools_sup.erl6
-rw-r--r--lib/runtime_tools/src/ttb_autostart.erl55
10 files changed, 741 insertions, 74 deletions
diff --git a/lib/runtime_tools/src/Makefile b/lib/runtime_tools/src/Makefile
index 4f831f3dd8..cb302b79c2 100644
--- a/lib/runtime_tools/src/Makefile
+++ b/lib/runtime_tools/src/Makefile
@@ -1,7 +1,7 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 1999-2009. All Rights Reserved.
+# Copyright Ericsson AB 1999-2012. All Rights Reserved.
#
# The contents of this file are subject to the Erlang Public License,
# Version 1.1, (the "License"); you may not use this file except in
@@ -45,8 +45,10 @@ MODULES= \
runtime_tools \
runtime_tools_sup \
dbg \
+ dyntrace \
percept_profile \
- observer_backend
+ observer_backend \
+ ttb_autostart
HRL_FILES= ../include/observer_backend.hrl
ERL_FILES= $(MODULES:%=%.erl)
@@ -63,10 +65,15 @@ APPUP_FILE= runtime_tools.appup
APPUP_SRC= $(APPUP_FILE).src
APPUP_TARGET= $(EBIN)/$(APPUP_FILE)
+EXAMPLE_FILES= \
+ ../examples/*
# ----------------------------------------------------
# FLAGS
# ----------------------------------------------------
-ERL_COMPILE_FLAGS += -I../include
+ERL_COMPILE_FLAGS += \
+ -I../include \
+ -I ../../et/include \
+ -I ../../../libraries/et/include
# ----------------------------------------------------
# Targets
@@ -96,6 +103,8 @@ release_spec: opt
$(INSTALL_DATA) $(ERL_FILES) $(RELSYSDIR)/src
$(INSTALL_DIR) $(RELSYSDIR)/include
$(INSTALL_DATA) $(HRL_FILES) $(RELSYSDIR)/include
+ $(INSTALL_DIR) $(RELSYSDIR)/examples
+ $(INSTALL_DATA) $(EXAMPLE_FILES) $(RELSYSDIR)/examples
$(INSTALL_DIR) $(RELSYSDIR)/ebin
$(INSTALL_DATA) $(TARGET_FILES) $(RELSYSDIR)/ebin
diff --git a/lib/runtime_tools/src/dbg.erl b/lib/runtime_tools/src/dbg.erl
index 56283f4d3d..385047ee73 100644
--- a/lib/runtime_tools/src/dbg.erl
+++ b/lib/runtime_tools/src/dbg.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2011. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -32,7 +32,7 @@
-export([fun2ms/1]).
%% Local exports
--export([erlang_trace/3,get_info/0]).
+-export([erlang_trace/3,get_info/0,deliver_and_flush/1]).
%% Debug exports
-export([wrap_presort/2, wrap_sort/2, wrap_postsort/1, wrap_sortfix/2,
@@ -348,17 +348,16 @@ trace_port_control(Operation) ->
trace_port_control(node(), Operation).
trace_port_control(Node, flush) ->
- Ref = erlang:trace_delivered(all),
- receive
- {trace_delivered,all,Ref} -> ok
- end,
- case trace_port_control(Node, $f, "") of
- {ok, [0]} ->
- ok;
- {ok, _} ->
- {error, not_supported_by_trace_driver};
- Other ->
- Other
+ case get_tracer(Node) of
+ {ok, Port} when is_port(Port) ->
+ case catch rpc:call(Node,?MODULE,deliver_and_flush,[Port]) of
+ [0] ->
+ ok;
+ _ ->
+ {error, not_supported_by_trace_driver}
+ end;
+ _ ->
+ {error, no_trace_driver}
end;
trace_port_control(Node,get_listen_port) ->
case trace_port_control(Node,$p, "") of
@@ -378,7 +377,14 @@ trace_port_control(Node, Command, Arg) ->
{error, no_trace_driver}
end.
-
+%% A bit more than just flush - it also makes sure all trace messages
+%% are delivered first, before flushing the driver.
+deliver_and_flush(Port) ->
+ Ref = erlang:trace_delivered(all),
+ receive
+ {trace_delivered,all,Ref} -> ok
+ end,
+ erlang:port_control(Port, $f, "").
trace_port(file, {Filename, wrap, Tail}) ->
@@ -684,18 +690,12 @@ loop({C,T}=SurviveLinks, Table) ->
%% tracing on the node it removes from the list of active trace nodes,
%% we will call erlang:trace_delivered/1 on ALL nodes that we have
%% connections to.
- Delivered = fun() ->
- Ref = erlang:trace_delivered(all),
- receive
- {trace_delivered,all,Ref} -> ok
- end
- end,
- catch rpc:multicall(nodes(), erlang, apply, [Delivered,[]]),
- Ref = erlang:trace_delivered(all),
- receive
- {trace_delivered,all,Ref} ->
- exit(done)
- end;
+ %% If it is a file trace driver, we will also flush the port.
+ lists:foreach(fun({Node,{_Relay,Port}}) ->
+ rpc:call(Node,?MODULE,deliver_and_flush,[Port])
+ end,
+ get()),
+ exit(done);
{From, {link_to, Pid}} ->
case (catch link(Pid)) of
{'EXIT', Reason} ->
@@ -1449,6 +1449,19 @@ new_pattern_table() ->
ets:insert(PT,
{exception_trace,
term_to_binary(x)}),
+ ets:insert(PT,
+ {c,
+ term_to_binary([{'_',[],[{message,{caller}}]}])}),
+ ets:insert(PT,
+ {caller_trace,
+ term_to_binary(c)}),
+ ets:insert(PT,
+ {cx,
+ term_to_binary([{'_',[],[{exception_trace},
+ {message,{caller}}]}])}),
+ ets:insert(PT,
+ {caller_exception_trace,
+ term_to_binary(cx)}),
PT.
diff --git a/lib/runtime_tools/src/dyntrace.erl b/lib/runtime_tools/src/dyntrace.erl
new file mode 100644
index 0000000000..388c7679b9
--- /dev/null
+++ b/lib/runtime_tools/src/dyntrace.erl
@@ -0,0 +1,279 @@
+-module(dyntrace).
+
+%%% @doc The Dynamic tracing interface module
+%%%
+%%% This Dynamic tracing interface module, with the corresponding NIFs, should
+%%% work on any operating system platform where user-space DTrace/Systemtap
+%%% (and in the future LttNG UST) probes are supported.
+%%%
+%%% Use the `dyntrace:init()' function to load the NIF shared library and
+%%% to initialize library's private state.
+%%%
+%%% It is recommended that you use the `dyntrace:p()' function to add
+%%% Dynamic trace probes to your Erlang code. This function can accept up to
+%%% four integer arguments and four string arguments; the integer
+%%% argument(s) must come before any string argument. For example:
+%%% ```
+%%% 1> dyntrace:put_tag("GGOOOAAALL!!!!!").
+%%% true
+%%% 2> dyntrace:init().
+%%% ok
+%%%
+%%% % % % If using dtrace, enable the Dynamic trace probe using the 'dtrace'
+%%% % % % command.
+%%%
+%%% 3> dyntrace:p(7, 8, 9, "one", "four").
+%%% true
+%%% '''
+%%%
+%%% Output from the example D script `user-probe.d' looks like:
+%%% ```
+%%% <0.34.0> GGOOOAAALL!!!!! 7 8 9 0 'one' 'four' '' ''
+%%% '''
+%%%
+%%% If the expected type of variable is not present, e.g. integer when
+%%% integer() is expected, or an I/O list when iolist() is expected,
+%%% then the driver will ignore the user's input and use a default
+%%% value of 0 or NULL, respectively.
+
+-export([available/0,
+ user_trace_s1/1, % TODO: unify with pid & tag args like user_trace_i4s4
+ p/0, p/1, p/2, p/3, p/4, p/5, p/6, p/7, p/8]).
+-export([put_tag/1, get_tag/0, get_tag_data/0, spread_tag/1, restore_tag/1]).
+
+-export([scaff/0]). % Development only
+-export([user_trace_i4s4/9]). % Know what you're doing!
+-on_load(on_load/0).
+
+-type probe_arg() :: integer() | iolist().
+-type int_p_arg() :: integer() | iolist() | undef.
+
+%% The *_maybe() types use atom() instead of a stricter 'undef'
+%% because user_trace_i4s4/9 is exposed to the outside world, and
+%% because the driver will allow any atom to be used as a "not
+%% present" indication, we'll allow any atom in the types.
+
+-type integer_maybe() :: integer() | atom().
+-type iolist_maybe() :: iolist() | atom().
+
+on_load() ->
+ PrivDir = code:priv_dir(runtime_tools),
+ LibName = "dyntrace",
+ Lib = filename:join([PrivDir, "lib", LibName]),
+ Status = case erlang:load_nif(Lib, 0) of
+ ok -> ok;
+ {error, {load_failed, _}}=Error1 ->
+ ArchLibDir =
+ filename:join([PrivDir, "lib",
+ erlang:system_info(system_architecture)]),
+ Candidate =
+ filelib:wildcard(filename:join([ArchLibDir,LibName ++ "*" ])),
+ case Candidate of
+ [] -> Error1;
+ _ ->
+ ArchLib = filename:join([ArchLibDir, LibName]),
+ erlang:load_nif(ArchLib, 0)
+ end;
+ Error1 -> Error1
+ end,
+ case Status of
+ ok -> ok;
+ {error, {E, Str}} ->
+ case erlang:system_info(dynamic_trace) of
+ none ->
+ ok;
+ _ ->
+ error_logger:error_msg("Unable to load dyntrace library. Failed with error:~n
+\"~p, ~s\"~n"
+ "Dynamic tracing is enabled but the driver is not built correctly~n",[
+ E,Str]),
+ Status
+ end
+ end.
+
+%%%
+%%% NIF placeholders
+%%%
+
+-spec available() -> true | false.
+
+available() ->
+ erlang:nif_error(nif_not_loaded).
+
+-spec user_trace_s1(iolist()) -> true | false | error | badarg.
+
+user_trace_s1(_Message) ->
+ erlang:nif_error(nif_not_loaded).
+
+-spec user_trace_i4s4(iolist(),
+ integer_maybe(), integer_maybe(),
+ integer_maybe(), integer_maybe(),
+ iolist_maybe(), iolist_maybe(),
+ iolist_maybe(), iolist_maybe()) ->
+ true | false | error | badarg.
+
+user_trace_i4s4(_, _, _, _, _, _, _, _, _) ->
+ erlang:nif_error(nif_not_loaded).
+
+%%%
+%%% Erlang support functions
+%%%
+
+-spec p() -> true | false | error | badarg.
+
+p() ->
+ user_trace_int(undef, undef, undef, undef, undef, undef, undef, undef).
+
+-spec p(probe_arg()) -> true | false | error | badarg.
+
+p(I1) when is_integer(I1) ->
+ user_trace_int(I1, undef, undef, undef, undef, undef, undef, undef);
+p(S1) ->
+ user_trace_int(undef, undef, undef, undef, S1, undef, undef, undef).
+
+-spec p(probe_arg(), probe_arg()) -> true | false | error | badarg.
+
+p(I1, I2) when is_integer(I1), is_integer(I2) ->
+ user_trace_int(I1, I2, undef, undef, undef, undef, undef, undef);
+p(I1, S1) when is_integer(I1) ->
+ user_trace_int(I1, undef, undef, undef, S1, undef, undef, undef);
+p(S1, S2) ->
+ user_trace_int(undef, undef, undef, undef, S1, S2, undef, undef).
+
+-spec p(probe_arg(), probe_arg(), probe_arg()) -> true | false | error | badarg.
+
+p(I1, I2, I3) when is_integer(I1), is_integer(I2), is_integer(I3) ->
+ user_trace_int(I1, I2, I3, undef, undef, undef, undef, undef);
+p(I1, I2, S1) when is_integer(I1), is_integer(I2) ->
+ user_trace_int(I1, I2, undef, undef, S1, undef, undef, undef);
+p(I1, S1, S2) when is_integer(I1) ->
+ user_trace_int(I1, undef, undef, undef, S1, S2, undef, undef);
+p(S1, S2, S3) ->
+ user_trace_int(undef, undef, undef, undef, S1, S2, S3, undef).
+
+-spec p(probe_arg(), probe_arg(), probe_arg(), probe_arg()) ->
+ true | false | error | badarg.
+
+p(I1, I2, I3, I4) when is_integer(I1), is_integer(I2), is_integer(I3), is_integer(I4) ->
+ user_trace_int(I1, I2, I3, I4, undef, undef, undef, undef);
+p(I1, I2, I3, S1) when is_integer(I1), is_integer(I2), is_integer(I3) ->
+ user_trace_int(I1, I2, I3, undef, S1, undef, undef, undef);
+p(I1, I2, S1, S2) when is_integer(I1), is_integer(I2) ->
+ user_trace_int(I1, I2, undef, undef, S1, S2, undef, undef);
+p(I1, S1, S2, S3) when is_integer(I1) ->
+ user_trace_int(I1, undef, undef, undef, S1, S2, S3, undef);
+p(S1, S2, S3, S4) ->
+ user_trace_int(undef, undef, undef, undef, S1, S2, S3, S4).
+
+-spec p(probe_arg(), probe_arg(), probe_arg(), probe_arg(),
+ probe_arg()) ->
+ true | false | error | badarg.
+
+p(I1, I2, I3, I4, S1) when is_integer(I1), is_integer(I2), is_integer(I3), is_integer(I4) ->
+ user_trace_int(I1, I2, I3, I4, S1, undef, undef, undef);
+p(I1, I2, I3, S1, S2) when is_integer(I1), is_integer(I2), is_integer(I3) ->
+ user_trace_int(I1, I2, I3, undef, S1, S2, undef, undef);
+p(I1, I2, S1, S2, S3) when is_integer(I1), is_integer(I2) ->
+ user_trace_int(I1, I2, undef, undef, S1, S2, S3, undef);
+p(I1, S1, S2, S3, S4) when is_integer(I1) ->
+ user_trace_int(I1, undef, undef, undef, S1, S2, S3, S4).
+
+-spec p(probe_arg(), probe_arg(), probe_arg(), probe_arg(),
+ probe_arg(), probe_arg()) ->
+ true | false | error | badarg.
+
+p(I1, I2, I3, I4, S1, S2) when is_integer(I1), is_integer(I2), is_integer(I3), is_integer(I4) ->
+ user_trace_int(I1, I2, I3, I4, S1, S2, undef, undef);
+p(I1, I2, I3, S1, S2, S3) when is_integer(I1), is_integer(I2), is_integer(I3) ->
+ user_trace_int(I1, I2, I3, undef, S1, S2, S3, undef);
+p(I1, I2, S1, S2, S3, S4) when is_integer(I1), is_integer(I2) ->
+ user_trace_int(I1, I2, undef, undef, S1, S2, S3, S4).
+
+-spec p(probe_arg(), probe_arg(), probe_arg(), probe_arg(),
+ probe_arg(), probe_arg(), probe_arg()) ->
+ true | false | error | badarg.
+
+p(I1, I2, I3, I4, S1, S2, S3) when is_integer(I1), is_integer(I2), is_integer(I3), is_integer(I4) ->
+ user_trace_int(I1, I2, I3, I4, S1, S2, S3, undef);
+p(I1, I2, I3, S1, S2, S3, S4) when is_integer(I1), is_integer(I2), is_integer(I3) ->
+ user_trace_int(I1, I2, I3, undef, S1, S2, S3, S4).
+
+-spec p(probe_arg(), probe_arg(), probe_arg(), probe_arg(),
+ probe_arg(), probe_arg(), probe_arg(), probe_arg()) ->
+ true | false | error | badarg.
+
+p(I1, I2, I3, I4, S1, S2, S3, S4) when is_integer(I1), is_integer(I2), is_integer(I3), is_integer(I4) ->
+ user_trace_int(I1, I2, I3, I4, S1, S2, S3, S4).
+
+-spec user_trace_int(int_p_arg(), int_p_arg(), int_p_arg(), int_p_arg(),
+ int_p_arg(), int_p_arg(), int_p_arg(), int_p_arg()) ->
+ true | false | error | badarg.
+
+user_trace_int(I1, I2, I3, I4, S1, S2, S3, S4) ->
+ UTag = get_tag(),
+ try
+ user_trace_i4s4(UTag, I1, I2, I3, I4, S1, S2, S3, S4)
+ catch
+ error:nif_not_loaded ->
+ false
+ end.
+
+-spec put_tag(undefined | iodata()) -> binary() | undefined.
+put_tag(Data) ->
+ erlang:dt_put_tag(unicode:characters_to_binary(Data)).
+
+-spec get_tag() -> binary() | undefined.
+get_tag() ->
+ erlang:dt_get_tag().
+
+-spec get_tag_data() -> binary() | undefined.
+%% Gets tag if set, otherwise the spread tag data from last incoming message
+get_tag_data() ->
+ erlang:dt_get_tag_data().
+
+-spec spread_tag(boolean()) -> true | {non_neg_integer(), binary() | []}.
+%% Makes the tag behave as a sequential trace token, will spread with
+%% messages to be picked up by someone using get_tag_data
+spread_tag(B) ->
+ erlang:dt_spread_tag(B).
+
+-spec restore_tag(true | {non_neg_integer(), binary() | []}) -> true.
+restore_tag(T) ->
+ erlang:dt_restore_tag(T).
+
+
+%% Scaffolding to write tedious code: quick brute force and not 100% correct.
+
+scaff_int_args(N) ->
+ L = lists:sublist(["I1", "I2", "I3", "I4"], N),
+ [string:join(L, ", ")].
+
+scaff_int_guards(N) ->
+ L = lists:sublist(["is_integer(I1)", "is_integer(I2)", "is_integer(I3)",
+ "is_integer(I4)"], N),
+ lists:flatten(string:join(L, ", ")).
+
+scaff_char_args(N) ->
+ L = lists:sublist(["S1", "S2", "S3", "S4"], N),
+ [string:join(L, ", ")].
+
+scaff_fill(N) ->
+ [string:join(lists:duplicate(N, "undef"), ", ")].
+
+scaff() ->
+ L = [begin
+ IntArgs = scaff_int_args(N_int),
+ IntGuards = scaff_int_guards(N_int),
+ IntFill = scaff_fill(4 - N_int),
+ CharArgs = scaff_char_args(N_char),
+ CharFill = scaff_fill(4 - N_char),
+ InArgs = string:join(IntArgs ++ CharArgs, ", "),
+ OutArgs = string:join(IntArgs ++ IntFill ++ CharArgs ++ CharFill,
+ ", "),
+ {N_int + N_char,
+ lists:flatten([io_lib:format("p(~s) when ~s ->\n",
+ [InArgs, IntGuards]),
+ io_lib:format(" user_trace_int(~s);\n", [OutArgs])
+ ])}
+ end || N_int <- [0,1,2,3,4], N_char <- [0,1,2,3,4]],
+ [io:format("%%~p\n~s", [N, Str]) || {N, Str} <- lists:sort(L)].
diff --git a/lib/runtime_tools/src/erts_alloc_config.erl b/lib/runtime_tools/src/erts_alloc_config.erl
index 0bcb202fd8..284e88d4a7 100644
--- a/lib/runtime_tools/src/erts_alloc_config.erl
+++ b/lib/runtime_tools/src/erts_alloc_config.erl
@@ -1,6 +1,7 @@
+%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2007-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2011. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -16,6 +17,7 @@
%% The Initial Developer of the Original Code is Ericsson AB.
%%
%% %CopyrightEnd%
+%%
%%%-------------------------------------------------------------------
%%% File : erts_alloc_config.erl
@@ -71,6 +73,7 @@
A == binary_alloc;
A == std_alloc;
A == ets_alloc;
+ A == fix_alloc;
A == eheap_alloc;
A == ll_alloc;
A == sl_alloc;
@@ -94,6 +97,7 @@
[{binary_alloc, 131072},
{std_alloc, 131072},
{ets_alloc, 131072},
+ {fix_alloc, 131072},
{eheap_alloc, 524288},
{ll_alloc, 2097152},
{sl_alloc, 131072},
@@ -104,6 +108,7 @@
[{binary_alloc, 10},
{std_alloc, 10},
{ets_alloc, 10},
+ {fix_alloc, 10},
{eheap_alloc, 10},
{ll_alloc, 0},
{sl_alloc, 10},
@@ -438,9 +443,6 @@ conf_alloc(#conf{format_to = FTO} = Conf, #alloc{name = A} = Alc) ->
chk_xnote(Conf, Alc).
chk_xnote(#conf{format_to = FTO},
- #alloc{name = fix_alloc}) ->
- fcp(FTO, "Cannot be configured.");
-chk_xnote(#conf{format_to = FTO},
#alloc{name = sys_alloc}) ->
fcp(FTO, "Cannot be configured. Default malloc implementation used.");
chk_xnote(#conf{format_to = FTO},
@@ -470,7 +472,7 @@ au_conf_alloc(#conf{format_to = FTO} = Conf,
_ ->
fc(FTO, "~p instances used.",
[Insts]),
- format(FTO, " +M~ct ~p~n", [alloc_char(A), Insts])
+ format(FTO, " +M~ct true~n", [alloc_char(A)])
end,
mmbcs(Conf, Alc),
smbcs_lmbcs_mmmbc(Conf, Alc),
diff --git a/lib/runtime_tools/src/inviso_rt.erl b/lib/runtime_tools/src/inviso_rt.erl
index ac7ac2a584..b162f5b045 100644
--- a/lib/runtime_tools/src/inviso_rt.erl
+++ b/lib/runtime_tools/src/inviso_rt.erl
@@ -2359,8 +2359,8 @@ list_wrapset(Prefix,Suffix) ->
list_wrapset_2([File|Rest],RegExp) ->
Length=length(File),
- case regexp:first_match(File,RegExp) of
- {match,1,Length} -> % This is a member of the set.
+ case re:run(File,RegExp) of
+ {match,[{0,Length}]} -> % This is a member of the set.
[File|list_wrapset_2(Rest,RegExp)];
_ ->
list_wrapset_2(Rest,RegExp)
diff --git a/lib/runtime_tools/src/inviso_rt_lib.erl b/lib/runtime_tools/src/inviso_rt_lib.erl
index 2c6964e53e..5dfe14068a 100644
--- a/lib/runtime_tools/src/inviso_rt_lib.erl
+++ b/lib/runtime_tools/src/inviso_rt_lib.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2005-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2011. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -197,15 +197,15 @@ match_modules(RegExpDir,RegExpMod,Actions) ->
handle_expand_regexp_2([{Mod,Path}|Rest],RegExpDir,RegExpMod,Result) ->
ModStr=atom_to_list(Mod),
ModLen=length(ModStr),
- case regexp:first_match(ModStr,RegExpMod) of
- {match,1,ModLen} -> % Ok, The regexp matches the module.
+ case re:run(ModStr,RegExpMod) of
+ {match,[{0,ModLen}]} -> % Ok, The regexp matches the module.
if
is_list(RegExpDir),is_atom(Path) -> % Preloaded or covercompiled...
handle_expand_regexp_2(Rest,RegExpDir,RegExpMod,Result);
is_list(RegExpDir),is_list(Path) -> % Dir reg-exp is used!
PathOnly=filename:dirname(Path), % Must remove beam-file name.
- case regexp:first_match(PathOnly,RegExpDir) of
- {match,_,_} -> % Did find a match, that is enough!
+ case re:run(PathOnly,RegExpDir,[{capture,none}]) of
+ match -> % Did find a match, that is enough!
handle_expand_regexp_2(Rest,RegExpDir,RegExpMod,[Mod|Result]);
_ -> % Either error or nomatch.
handle_expand_regexp_2(Rest,RegExpDir,RegExpMod,Result)
@@ -233,8 +233,8 @@ handle_expand_regexp_3([Path|Rest],RegExpDir,RegExpMod,AllLoaded,Result) ->
volumerelative -> % Only on Windows!?
filename:absname(Path)
end,
- case regexp:first_match(AbsPath,RegExpDir) of
- {match,_,_} -> % Ok, the directory is allowed.
+ case re:run(AbsPath,RegExpDir,[{capture,none}]) of
+ match -> % Ok, the directory is allowed.
NewResult=handle_expand_regexp_3_1(Path,RegExpMod,AllLoaded,Result),
handle_expand_regexp_3(Rest,RegExpDir,RegExpMod,AllLoaded,NewResult);
_ -> % This directory does not qualify.
@@ -262,8 +262,8 @@ handle_expand_regexp_3_2([File|Rest],RegExpMod,AllLoaded,Result) ->
case {lists:keysearch(Mod,1,AllLoaded),lists:member(Mod,Result)} of
{false,false} -> % This module is not tried before.
ModLen=length(ModStr),
- case regexp:first_match(ModStr,RegExpMod) of
- {match,1,ModLen} -> % This module satisfies the regexp.
+ case re:run(ModStr,RegExpMod) of
+ {match,[{0,ModLen}]} -> % This module satisfies the regexp.
handle_expand_regexp_3_2(Rest,RegExpMod,AllLoaded,[Mod|Result]);
_ -> % Error or not perfect match.
handle_expand_regexp_3_2(Rest,RegExpMod,AllLoaded,Result)
diff --git a/lib/runtime_tools/src/observer_backend.erl b/lib/runtime_tools/src/observer_backend.erl
index 0f428de07a..01e99f3f5e 100644
--- a/lib/runtime_tools/src/observer_backend.erl
+++ b/lib/runtime_tools/src/observer_backend.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2002-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2012. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -21,6 +21,9 @@
%% General
-export([vsn/0]).
+%% observer stuff
+-export([sys_info/0, get_table/3, get_table_list/2, fetch_stats/2]).
+
%% etop stuff
-export([etop_collect/1]).
-include("observer_backend.hrl").
@@ -31,6 +34,7 @@
ttb_write_binary/2,
ttb_stop/1,
ttb_fetch/2,
+ ttb_resume_trace/0,
ttb_get_filenames/1]).
-define(CHUNKSIZE,8191). % 8 kbytes - 1 byte
@@ -41,8 +45,175 @@ vsn() ->
Error -> Error
end.
+%%
+%% observer backend
+%%
+sys_info() ->
+ {{_,Input},{_,Output}} = erlang:statistics(io),
+ [{process_count, erlang:system_info(process_count)},
+ {process_limit, erlang:system_info(process_limit)},
+ {uptime, element(1, erlang:statistics(wall_clock))},
+ {run_queue, erlang:statistics(run_queue)},
+ {io_input, Input},
+ {io_output, Output},
+ {logical_processors, erlang:system_info(logical_processors)},
+ {logical_processors_available, erlang:system_info(logical_processors_available)},
+ {logical_processors_online, erlang:system_info(logical_processors_online)},
+
+ {otp_release, erlang:system_info(otp_release)},
+ {version, erlang:system_info(version)},
+ {system_architecture, erlang:system_info(system_architecture)},
+ {kernel_poll, erlang:system_info(kernel_poll)},
+ {smp_support, erlang:system_info(smp_support)},
+ {threads, erlang:system_info(threads)},
+ {thread_pool_size, erlang:system_info(thread_pool_size)},
+ {wordsize_internal, erlang:system_info({wordsize, internal})},
+ {wordsize_external, erlang:system_info({wordsize, external})} |
+ erlang:memory()
+ ].
+
+get_table(Parent, Table, Module) ->
+ spawn(fun() ->
+ link(Parent),
+ get_table2(Parent, Table, Module)
+ end).
+
+get_table2(Parent, Table, Type) ->
+ Size = case Type of
+ ets -> ets:info(Table, size);
+ mnesia -> mnesia:table_info(Table, size)
+ end,
+ case Size > 0 of
+ false ->
+ Parent ! {self(), '$end_of_table'},
+ normal;
+ true when Type =:= ets ->
+ Mem = ets:info(Table, memory),
+ Average = Mem div Size,
+ NoElements = max(10, 20000 div Average),
+ get_ets_loop(Parent, ets:match(Table, '$1', NoElements));
+ true ->
+ Mem = mnesia:table_info(Table, memory),
+ Average = Mem div Size,
+ NoElements = max(10, 20000 div Average),
+ Ms = [{'$1', [], ['$1']}],
+ Get = fun() ->
+ get_mnesia_loop(Parent, mnesia:select(Table, Ms, NoElements, read))
+ end,
+ %% Not a transaction, we don't want to grab locks when inspecting the table
+ mnesia:async_dirty(Get)
+ end.
-
+get_ets_loop(Parent, '$end_of_table') ->
+ Parent ! {self(), '$end_of_table'};
+get_ets_loop(Parent, {Match, Cont}) ->
+ Parent ! {self(), Match},
+ get_ets_loop(Parent, ets:match(Cont)).
+
+get_mnesia_loop(Parent, '$end_of_table') ->
+ Parent ! {self(), '$end_of_table'};
+get_mnesia_loop(Parent, {Match, Cont}) ->
+ Parent ! {self(), Match},
+ get_mnesia_loop(Parent, mnesia:select(Cont)).
+
+get_table_list(ets, Opts) ->
+ HideUnread = proplists:get_value(unread_hidden, Opts, true),
+ HideSys = proplists:get_value(sys_hidden, Opts, true),
+ Info = fun(Id, Acc) ->
+ try
+ TabId = case ets:info(Id, named_table) of
+ true -> ignore;
+ false -> Id
+ end,
+ Name = ets:info(Id, name),
+ Protection = ets:info(Id, protection),
+ ignore(HideUnread andalso Protection == private, unreadable),
+ Owner = ets:info(Id, owner),
+ RegName = case catch process_info(Owner, registered_name) of
+ [] -> ignore;
+ {registered_name, ProcName} -> ProcName
+ end,
+ ignore(HideSys andalso ordsets:is_element(RegName, sys_processes()), system_tab),
+ ignore(HideSys andalso ordsets:is_element(Name, sys_tables()), system_tab),
+ ignore((RegName == mnesia_monitor)
+ andalso Name /= schema
+ andalso is_atom((catch mnesia:table_info(Name, where_to_read))), mnesia_tab),
+ Memory = ets:info(Id, memory) * erlang:system_info(wordsize),
+ Tab = [{name,Name},
+ {id,TabId},
+ {protection,Protection},
+ {owner,Owner},
+ {size,ets:info(Id, size)},
+ {reg_name,RegName},
+ {type,ets:info(Id, type)},
+ {keypos,ets:info(Id, keypos)},
+ {heir,ets:info(Id, heir)},
+ {memory,Memory},
+ {compressed,ets:info(Id, compressed)},
+ {fixed,ets:info(Id, fixed)}
+ ],
+ [Tab|Acc]
+ catch _:_What ->
+ %% io:format("Skipped ~p: ~p ~n",[Id, _What]),
+ Acc
+ end
+ end,
+ lists:foldl(Info, [], ets:all());
+
+get_table_list(mnesia, Opts) ->
+ HideSys = proplists:get_value(sys_hidden, Opts, true),
+ Owner = ets:info(schema, owner),
+ Owner /= undefined orelse
+ throw({error, "Mnesia is not running on: " ++ atom_to_list(node())}),
+ {registered_name, RegName} = process_info(Owner, registered_name),
+ Info = fun(Id, Acc) ->
+ try
+ Name = Id,
+ ignore(HideSys andalso ordsets:is_element(Name, mnesia_tables()), system_tab),
+ ignore(Name =:= schema, mnesia_tab),
+ Storage = mnesia:table_info(Id, storage_type),
+ Tab0 = [{name,Name},
+ {owner,Owner},
+ {size,mnesia:table_info(Id, size)},
+ {reg_name,RegName},
+ {type,mnesia:table_info(Id, type)},
+ {keypos,2},
+ {memory,mnesia:table_info(Id, memory) * erlang:system_info(wordsize)},
+ {storage,Storage},
+ {index,mnesia:table_info(Id, index)}
+ ],
+ Tab = if Storage == disc_only_copies ->
+ [{fixed, dets:info(Id, safe_fixed)}|Tab0];
+ (Storage == ram_copies) orelse
+ (Storage == disc_copies) ->
+ [{fixed, ets:info(Id, fixed)},
+ {compressed, ets:info(Id, compressed)}|Tab0];
+ true -> Tab0
+ end,
+ [Tab|Acc]
+ catch _:_What ->
+ %% io:format("Skipped ~p: ~p ~p ~n",[Id, _What, erlang:get_stacktrace()]),
+ Acc
+ end
+ end,
+ lists:foldl(Info, [], mnesia:system_info(tables)).
+
+fetch_stats(Parent, Time) ->
+ erlang:system_flag(scheduler_wall_time, true),
+ process_flag(trap_exit, true),
+ fetch_stats_loop(Parent, Time),
+ erlang:system_flag(scheduler_wall_time, false).
+
+fetch_stats_loop(Parent, Time) ->
+ receive
+ _Msg -> normal
+ after Time ->
+ _M = Parent ! {stats, 1,
+ erlang:statistics(scheduler_wall_time),
+ erlang:statistics(io),
+ erlang:memory()},
+ fetch_stats(Parent, Time)
+ end.
%%
%% etop backend
%%
@@ -92,16 +263,22 @@ etop_collect([], Acc) -> Acc.
%%
%% ttb backend
%%
-ttb_init_node(MetaFile,PI,Traci) ->
+ttb_init_node(MetaFile_0,PI,Traci) ->
if
- is_list(MetaFile);
- is_atom(MetaFile) ->
+ is_list(MetaFile_0);
+ is_atom(MetaFile_0) ->
+ {ok, Cwd} = file:get_cwd(),
+ MetaFile = filename:join(Cwd, MetaFile_0),
file:delete(MetaFile);
true -> % {local,_,_}
- ok
+ MetaFile = MetaFile_0
+ end,
+ case proplists:get_value(resume, Traci) of
+ {true, _} -> (autostart_module()):write_config(Traci);
+ _ -> ok
end,
Self = self(),
- MetaPid = spawn(fun() -> ttb_meta_tracer(MetaFile,PI,Self) end),
+ MetaPid = spawn(fun() -> ttb_meta_tracer(MetaFile,PI,Self,Traci) end),
receive {MetaPid,started} -> ok end,
MetaPid ! {metadata,Traci},
case PI of
@@ -111,13 +288,14 @@ ttb_init_node(MetaFile,PI,Traci) ->
false ->
ok
end,
- {ok,MetaPid}.
+ {ok,MetaFile,MetaPid}.
ttb_write_trace_info(MetaPid,Key,What) ->
MetaPid ! {metadata,Key,What},
ok.
-ttb_meta_tracer(MetaFile,PI,Parent) ->
+ttb_meta_tracer(MetaFile,PI,Parent,SessionData) ->
+ erlang:monitor(process, proplists:get_value(ttb_control, SessionData)),
case PI of
true ->
ReturnMS = [{'_',[],[{return_trace}]}],
@@ -130,22 +308,29 @@ ttb_meta_tracer(MetaFile,PI,Parent) ->
ok
end,
Parent ! {self(),started},
- ttb_meta_tracer_loop(MetaFile,PI,dict:new()).
+ case proplists:get_value(overload_check, SessionData) of
+ {Ms, M, F} ->
+ catch M:F(init),
+ erlang:send_after(Ms, self(), overload_check);
+ _ ->
+ ok
+ end,
+ ttb_meta_tracer_loop(MetaFile,PI,dict:new(),SessionData).
-ttb_meta_tracer_loop(MetaFile,PI,Acc) ->
+ttb_meta_tracer_loop(MetaFile,PI,Acc,State) ->
receive
{trace_ts,_,call,{erlang,register,[Name,Pid]},_} ->
ttb_store_meta({pid,{Pid,Name}},MetaFile),
- ttb_meta_tracer_loop(MetaFile,PI,Acc);
+ ttb_meta_tracer_loop(MetaFile,PI,Acc,State);
{trace_ts,_,call,{global,register_name,[Name,Pid]},_} ->
ttb_store_meta({pid,{Pid,{global,Name}}},MetaFile),
- ttb_meta_tracer_loop(MetaFile,PI,Acc);
+ ttb_meta_tracer_loop(MetaFile,PI,Acc,State);
{trace_ts,CallingPid,call,{erlang,spawn_opt,[{M,F,Args,_}]},_} ->
MFA = {M,F,length(Args)},
NewAcc = dict:update(CallingPid,
fun(Old) -> [MFA|Old] end, [MFA],
Acc),
- ttb_meta_tracer_loop(MetaFile,PI,NewAcc);
+ ttb_meta_tracer_loop(MetaFile,PI,NewAcc,State);
{trace_ts,CallingPid,return_from,{erlang,spawn_opt,_Arity},Ret,_} ->
case Ret of
{NewPid,_Mref} when is_pid(NewPid) -> ok;
@@ -158,14 +343,14 @@ ttb_meta_tracer_loop(MetaFile,PI,Acc) ->
T
end,
Acc),
- ttb_meta_tracer_loop(MetaFile,PI,NewAcc);
+ ttb_meta_tracer_loop(MetaFile,PI,NewAcc,State);
{trace_ts,CallingPid,call,{erlang,Spawn,[M,F,Args]},_}
when Spawn==spawn;Spawn==spawn_link ->
MFA = {M,F,length(Args)},
NewAcc = dict:update(CallingPid,
fun(Old) -> [MFA|Old] end, [MFA],
Acc),
- ttb_meta_tracer_loop(MetaFile,PI,NewAcc);
+ ttb_meta_tracer_loop(MetaFile,PI,NewAcc,State);
{trace_ts,CallingPid,return_from,{erlang,Spawn,_Arity},NewPid,_}
when Spawn==spawn;Spawn==spawn_link ->
@@ -176,28 +361,53 @@ ttb_meta_tracer_loop(MetaFile,PI,Acc) ->
T
end,
Acc),
- ttb_meta_tracer_loop(MetaFile,PI,NewAcc);
+ ttb_meta_tracer_loop(MetaFile,PI,NewAcc,State);
{metadata,Data} when is_list(Data) ->
ttb_store_meta(Data,MetaFile),
- ttb_meta_tracer_loop(MetaFile,PI,Acc);
+ ttb_meta_tracer_loop(MetaFile,PI,Acc,State);
{metadata,Key,Fun} when is_function(Fun) ->
ttb_store_meta([{Key,Fun()}],MetaFile),
- ttb_meta_tracer_loop(MetaFile,PI,Acc);
+ ttb_meta_tracer_loop(MetaFile,PI,Acc,State);
{metadata,Key,What} ->
ttb_store_meta([{Key,What}],MetaFile),
- ttb_meta_tracer_loop(MetaFile,PI,Acc);
-
- stop when PI=:=true ->
- erlang:trace_pattern({erlang,spawn,3},false,[meta]),
+ ttb_meta_tracer_loop(MetaFile,PI,Acc,State);
+ overload_check ->
+ {Ms, M, F} = proplists:get_value(overload_check, State),
+ case catch M:F(check) of
+ true ->
+ erlang:trace(all, false, [all]),
+ ControlPid = proplists:get_value(ttb_control, State),
+ ControlPid ! {node_overloaded, node()},
+ catch M:F(stop),
+ ttb_meta_tracer_loop(MetaFile,PI,Acc,lists:keydelete(overload_check, 1, State));
+ _ ->
+ erlang:send_after(Ms, self(), overload_check),
+ ttb_meta_tracer_loop(MetaFile,PI,Acc, State)
+ end;
+ {'DOWN', _, _, _, _} ->
+ stop_seq_trace(),
+ self() ! stop,
+ ttb_meta_tracer_loop(MetaFile,PI,Acc, State);
+ stop when PI=:=true ->
+ try_stop_resume(State),
+ try_stop_overload_check(State),
+ erlang:trace_pattern({erlang,spawn,3},false,[meta]),
erlang:trace_pattern({erlang,spawn_link,3},false,[meta]),
erlang:trace_pattern({erlang,spawn_opt,1},false,[meta]),
erlang:trace_pattern({erlang,register,2},false,[meta]),
erlang:trace_pattern({global,register_name,2},false,[meta]);
stop ->
- ok
+ try_stop_resume(State),
+ try_stop_overload_check(State)
+ end.
+
+try_stop_overload_check(State) ->
+ case proplists:get_value(overload, State) of
+ undefined -> ok;
+ {_, M, F} -> catch M:F(stop)
end.
pnames() ->
@@ -222,6 +432,40 @@ pinfo(P,Globals) ->
undefined -> [] % the process has terminated
end.
+autostart_module() ->
+ element(2, application:get_env(runtime_tools, ttb_autostart_module)).
+
+try_stop_resume(State) ->
+ case proplists:get_value(resume, State) of
+ true -> (autostart_module()):delete_config();
+ _ -> ok
+ end.
+
+ttb_resume_trace() ->
+ case (autostart_module()):read_config() of
+ {error, _} ->
+ ok;
+ {ok, Data} ->
+ Pid = proplists:get_value(ttb_control, Data),
+ {_, Timeout} = proplists:get_value(resume, Data),
+ case rpc:call(node(Pid), erlang, whereis, [ttb]) of
+ Pid ->
+ Pid ! {noderesumed, node(), self()},
+ wait_for_fetch_ready(Timeout);
+ _ ->
+ ok
+ end,
+ (autostart_module()):delete_config(),
+ ok
+ end.
+
+wait_for_fetch_ready(Timeout) ->
+ receive
+ trace_resumed ->
+ ok
+ after Timeout ->
+ ok
+ end.
ttb_store_meta(Data,{local,MetaFile,Port}) when is_list(Data) ->
ttb_send_to_port(Port,MetaFile,Data);
@@ -273,6 +517,9 @@ ttb_stop(MetaPid) ->
%% returns, and then the Port (in {local,MetaFile,Port})
%% cannot be accessed any more.
receive {'DOWN', Ref, process, MetaPid, _Info} -> ok end,
+ stop_seq_trace().
+
+stop_seq_trace() ->
seq_trace:reset_trace(),
seq_trace:set_system_tracer(false).
@@ -287,7 +534,7 @@ ttb_fetch(MetaFile,{Port,Host}) ->
send_files({Sock,Host},[File|Files]) ->
{ok,Fd} = file:open(File,[raw,read,binary]),
- gen_tcp:send(Sock,<<1,(list_to_binary(File))/binary>>),
+ gen_tcp:send(Sock,<<1,(list_to_binary(filename:basename(File)))/binary>>),
send_chunks(Sock,Fd),
file:delete(File),
send_files({Sock,Host},Files);
@@ -318,3 +565,62 @@ match_filenames(Dir,MetaFile,[H|T],Files) ->
end;
match_filenames(_Dir,_MetaFile,[],Files) ->
Files.
+
+
+%%%%%%%%%%%%%%%%%
+
+sys_tables() ->
+ [ac_tab, asn1,
+ cdv_dump_index_table, cdv_menu_table, cdv_decode_heap_table,
+ cell_id, cell_pos, clist,
+ cover_internal_data_table, cover_collected_remote_data_table, cover_binary_code_table,
+ code, code_names, cookies,
+ corba_policy, corba_policy_associations,
+ dets, dets_owners, dets_registry,
+ disk_log_names, disk_log_pids,
+ eprof, erl_atom_cache, erl_epmd_nodes,
+ etop_accum_tab, etop_tr,
+ ets_coverage_data,
+ file_io_servers,
+ gs_mapping, gs_names, gstk_db,
+ gstk_grid_cellid, gstk_grid_cellpos, gstk_grid_id,
+ httpd,
+ id,
+ ign_req_index, ign_requests,
+ index,
+ inet_cache, inet_db, inet_hosts,
+ 'InitialReferences',
+ int_db,
+ interpreter_includedirs_macros,
+ ir_WstringDef,
+ lmcounter, locks,
+ % mnesia_decision,
+ mnesia_gvar, mnesia_stats,
+ % mnesia_transient_decision,
+ pg2_table,
+ queue,
+ schema,
+ shell_records,
+ snmp_agent_table, snmp_local_db2, snmp_mib_data, snmp_note_store, snmp_symbolic_ets,
+ tkFun, tkLink, tkPriv,
+ ttb, ttb_history_table,
+ udp_fds, udp_pids
+ ].
+
+sys_processes() ->
+ [auth, code_server, global_name_server, inet_db,
+ mnesia_recover, net_kernel, timer_server, wxe_master].
+
+mnesia_tables() ->
+ [ir_AliasDef, ir_ArrayDef, ir_AttributeDef, ir_ConstantDef,
+ ir_Contained, ir_Container, ir_EnumDef, ir_ExceptionDef,
+ ir_IDLType, ir_IRObject, ir_InterfaceDef, ir_ModuleDef,
+ ir_ORB, ir_OperationDef, ir_PrimitiveDef, ir_Repository,
+ ir_SequenceDef, ir_StringDef, ir_StructDef, ir_TypedefDef,
+ ir_UnionDef, logTable, logTransferTable, mesh_meas,
+ mesh_type, mnesia_clist, orber_CosNaming,
+ orber_objkeys, user
+ ].
+
+ignore(true, Reason) -> throw(Reason);
+ignore(_,_ ) -> ok.
diff --git a/lib/runtime_tools/src/runtime_tools.app.src b/lib/runtime_tools/src/runtime_tools.app.src
index e6dc7a21d4..1152f7259d 100644
--- a/lib/runtime_tools/src/runtime_tools.app.src
+++ b/lib/runtime_tools/src/runtime_tools.app.src
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -22,7 +22,8 @@
{modules, [dbg,observer_backend,percept_profile,
inviso_rt,inviso_rt_lib,inviso_rt_meta,
inviso_as_lib,inviso_autostart,inviso_autostart_server,
- runtime_tools,runtime_tools_sup,erts_alloc_config]},
+ runtime_tools,runtime_tools_sup,erts_alloc_config,
+ ttb_autostart,dyntrace]},
{registered, [runtime_tools_sup,inviso_rt,inviso_rt_meta]},
{applications, [kernel, stdlib]},
% {env, [{inviso_autostart_mod,your_own_autostart_module}]},
diff --git a/lib/runtime_tools/src/runtime_tools_sup.erl b/lib/runtime_tools/src/runtime_tools_sup.erl
index 1a872c355d..913719c449 100644
--- a/lib/runtime_tools/src/runtime_tools_sup.erl
+++ b/lib/runtime_tools/src/runtime_tools_sup.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2011. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -38,6 +38,8 @@
init(AutoModArgs) ->
Flags = {one_for_one, 0, 3600},
Children = [{inviso_rt, {inviso_rt, start_link_auto, [AutoModArgs]},
- temporary, 3000, worker, [inviso_rt]}],
+ temporary, 3000, worker, [inviso_rt]},
+ {ttb_autostart, {ttb_autostart, start_link, []},
+ temporary, 3000, worker, [ttb_autostart]}],
{ok, {Flags, Children}}.
%% -----------------------------------------------------------------------------
diff --git a/lib/runtime_tools/src/ttb_autostart.erl b/lib/runtime_tools/src/ttb_autostart.erl
new file mode 100644
index 0000000000..4c6971c119
--- /dev/null
+++ b/lib/runtime_tools/src/ttb_autostart.erl
@@ -0,0 +1,55 @@
+%%%-------------------------------------------------------------------
+%%% File : ttb_autostart.erl
+%%% Author : Bartłomiej Puzoń <[email protected]>
+%%% Description : This supervisor is used to resume ttb tracing
+%%% Users are able to provide custom restart modules for *_config, as
+%%% file:write/read/delete may not be possible on diskless nodes.
+%%%
+%%% Created : 31 Jul 2010 by <[email protected]>
+%%%-------------------------------------------------------------------
+-module(ttb_autostart).
+
+-behaviour(gen_server).
+
+%% API
+-export([start_link/0,
+ read_config/0,
+ write_config/1,
+ delete_config/0]).
+
+%% gen_server callbacks
+-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
+ terminate/2, code_change/3]).
+
+-define(DEF_AUTOSTART_MODULE, ?MODULE).
+-define(AUTOSTART_FILENAME, "ttb_autostart.bin").
+
+start_link() ->
+ gen_server:start_link(?MODULE, no_args, []).
+
+delete_config() ->
+ file:delete(?AUTOSTART_FILENAME).
+
+read_config() ->
+ case file:read_file(?AUTOSTART_FILENAME) of
+ {ok, Data} -> {ok, binary_to_term(Data)};
+ Error -> Error
+ end.
+
+write_config(Data) ->
+ file:write_file(?AUTOSTART_FILENAME, term_to_binary(Data)).
+
+init(no_args) ->
+ case application:get_env(runtime_tools, ttb_autostart_module) of
+ {ok, _} -> ok;
+ undefined -> application:set_env(runtime_tools, ttb_autostart_module, ?DEF_AUTOSTART_MODULE)
+ end,
+ observer_backend:ttb_resume_trace(),
+ %%As the process is not needed any more, it will shut itself down
+ {ok, no_args, 10000}.
+
+handle_call(_,_,_) -> {noreply, no_args}.
+handle_cast(_,_) -> {noreply, no_args}.
+handle_info(timeout,_) -> {stop, normal, no_args}.
+terminate(_,_) -> ok.
+code_change(_,_,_) -> {ok, no_args}.