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-rw-r--r--lib/tools/src/lcnt.erl144
1 files changed, 110 insertions, 34 deletions
diff --git a/lib/tools/src/lcnt.erl b/lib/tools/src/lcnt.erl
index 23d66b084e..d0152a4915 100644
--- a/lib/tools/src/lcnt.erl
+++ b/lib/tools/src/lcnt.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2016. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2017. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -34,8 +34,11 @@
-export([start/0,
stop/0]).
-%% erts_debug:lock_counters api
--export([rt_collect/0,
+%% erts_debug:lcnt_xxx api
+-export([rt_mask/0,
+ rt_mask/1,
+ rt_mask/2,
+ rt_collect/0,
rt_collect/1,
rt_clear/0,
rt_clear/1,
@@ -134,27 +137,61 @@ start_internal() ->
%% -------------------------------------------------------------------- %%
%%
-%% API erts_debug:lock_counters
+%% API erts_debug:lcnt_xxx
%%
%% -------------------------------------------------------------------- %%
-rt_collect() ->
- erts_debug:lock_counters(info).
+rt_mask(Node, Categories) when is_atom(Node), is_list(Categories) ->
+ rpc:call(Node, lcnt, rt_mask, [Categories]).
+
+rt_mask(Node) when is_atom(Node) ->
+ rpc:call(Node, lcnt, rt_mask, []);
+
+rt_mask(Categories) when is_list(Categories) ->
+ case erts_debug:lcnt_control(copy_save) of
+ false ->
+ erts_debug:lcnt_control(mask, Categories);
+ true ->
+ {error, copy_save_enabled}
+ end.
+
+rt_mask() ->
+ erts_debug:lcnt_control(mask).
rt_collect(Node) ->
- rpc:call(Node, erts_debug, lock_counters, [info]).
+ rpc:call(Node, lcnt, rt_collect, []).
+rt_collect() ->
+ erts_debug:lcnt_collect().
+rt_clear(Node) ->
+ rpc:call(Node, lcnt, rt_clear, []).
rt_clear() ->
- erts_debug:lock_counters(clear).
+ erts_debug:lcnt_clear().
-rt_clear(Node) ->
- rpc:call(Node, erts_debug, lock_counters, [clear]).
+rt_opt(Node, Arg) ->
+ rpc:call(Node, lcnt, rt_opt, [Arg]).
+
+%% Compatibility shims for the "process/port_locks" options mentioned in the
+%% manual.
+rt_opt({process_locks, Enable}) ->
+ toggle_category(process, Enable);
+rt_opt({port_locks, Enable}) ->
+ toggle_category(io, Enable);
-rt_opt({Type, Opt}) ->
- erts_debug:lock_counters({Type, Opt}).
+rt_opt({Type, NewVal}) ->
+ PreviousVal = erts_debug:lcnt_control(Type),
+ erts_debug:lcnt_control(Type, NewVal),
+ PreviousVal.
-rt_opt(Node, {Type, Opt}) ->
- rpc:call(Node, erts_debug, lock_counters, [{Type, Opt}]).
+toggle_category(Category, true) ->
+ PreviousMask = erts_debug:lcnt_control(mask),
+ erts_debug:lcnt_control(mask, [Category | PreviousMask]),
+ lists:member(Category, PreviousMask);
+
+toggle_category(Category, false) ->
+ PreviousMask = erts_debug:lcnt_control(mask),
+ erts_debug:lcnt_control(mask, lists:delete(Category, PreviousMask)),
+ lists:member(Category, PreviousMask).
%% -------------------------------------------------------------------- %%
%%
@@ -181,9 +218,11 @@ raw() -> call(raw).
set(Option, Value) -> call({set, Option, Value}).
set({Option, Value}) -> call({set, Option, Value}).
save(Filename) -> call({save, Filename}).
-load(Filename) -> ok = start_internal(), call({load, Filename}).
+load(Filename) -> call({load, Filename}).
-call(Msg) -> gen_server:call(?MODULE, Msg, infinity).
+call(Msg) ->
+ ok = start_internal(),
+ gen_server:call(?MODULE, Msg, infinity).
%% -------------------------------------------------------------------- %%
%%
@@ -192,24 +231,21 @@ call(Msg) -> gen_server:call(?MODULE, Msg, infinity).
%% -------------------------------------------------------------------- %%
apply(M,F,As) when is_atom(M), is_atom(F), is_list(As) ->
- ok = start_internal(),
- Opt = lcnt:rt_opt({copy_save, true}),
- lcnt:clear(),
- Res = erlang:apply(M,F,As),
- lcnt:collect(),
- lcnt:rt_opt({copy_save, Opt}),
- Res.
+ apply(fun() ->
+ erlang:apply(M,F,As)
+ end).
apply(Fun) when is_function(Fun) ->
lcnt:apply(Fun, []).
apply(Fun, As) when is_function(Fun) ->
- ok = start_internal(),
Opt = lcnt:rt_opt({copy_save, true}),
lcnt:clear(),
Res = erlang:apply(Fun, As),
lcnt:collect(),
- lcnt:rt_opt({copy_save, Opt}),
+ %% _ is bound to silence a dialyzer warning; it used to fail silently and
+ %% we don't want to change the error semantics.
+ _ = lcnt:rt_opt({copy_save, Opt}),
Res.
all_conflicts() -> all_conflicts(time).
@@ -698,19 +734,47 @@ stats2record([{{File,Line},{Tries,Colls,{S,Ns,N}}}|Stats]) ->
nt = N} | stats2record(Stats)];
stats2record([]) -> [].
+
clean_id_creation(Id) when is_pid(Id) ->
Bin = term_to_binary(Id),
- <<H:3/binary, L:16, Node:L/binary, Ids:8/binary, _Creation/binary>> = Bin,
- Bin2 = list_to_binary([H, bytes16(L), Node, Ids, 0]),
+ <<H:3/binary, Rest/binary>> = Bin,
+ <<131, PidTag, AtomTag>> = H,
+ LL = atomlen_bits(AtomTag),
+ CL = creation_bits(PidTag),
+ <<L:LL, Node:L/binary, Ids:8/binary, _Creation/binary>> = Rest,
+ Bin2 = list_to_binary([H, <<L:LL>>, Node, Ids, <<0:CL>>]),
binary_to_term(Bin2);
clean_id_creation(Id) when is_port(Id) ->
Bin = term_to_binary(Id),
- <<H:3/binary, L:16, Node:L/binary, Ids:4/binary, _Creation/binary>> = Bin,
- Bin2 = list_to_binary([H, bytes16(L), Node, Ids, 0]),
+ <<H:3/binary, Rest/binary>> = Bin,
+ <<131, PortTag, AtomTag>> = H,
+ LL = atomlen_bits(AtomTag),
+ CL = creation_bits(PortTag),
+ <<L:LL, Node:L/binary, Ids:4/binary, _Creation/binary>> = Rest,
+ Bin2 = list_to_binary([H, <<L:LL>>, Node, Ids, <<0:CL>>]),
binary_to_term(Bin2);
clean_id_creation(Id) ->
Id.
+-define(PID_EXT, $g).
+-define(NEW_PID_EXT, $X).
+-define(PORT_EXT, $f).
+-define(NEW_PORT_EXT, $Y).
+-define(ATOM_EXT, $d).
+-define(SMALL_ATOM_EXT, $s).
+-define(ATOM_UTF8_EXT, $v).
+-define(SMALL_ATOM_UTF8_EXT, $w).
+
+atomlen_bits(?ATOM_EXT) -> 16;
+atomlen_bits(?SMALL_ATOM_EXT) -> 8;
+atomlen_bits(?ATOM_UTF8_EXT) -> 16;
+atomlen_bits(?SMALL_ATOM_UTF8_EXT) -> 8.
+
+creation_bits(?PID_EXT) -> 8;
+creation_bits(?NEW_PID_EXT) -> 32;
+creation_bits(?PORT_EXT) -> 8;
+creation_bits(?NEW_PORT_EXT) -> 32.
+
%% serializer
state_default(Field) -> proplists:get_value(Field, state2list(#state{})).
@@ -880,7 +944,7 @@ print_state_information(#state{locks = Locks} = State) ->
print(kv("#tries", s(Stats#stats.tries))),
print(kv("#colls", s(Stats#stats.colls))),
print(kv("wait time", s(Stats#stats.time) ++ " us" ++ " ( " ++ s(Stats#stats.time/1000000) ++ " s)")),
- print(kv("percent of duration", s(Stats#stats.time/State#state.duration*100) ++ " %")),
+ print(kv("percent of duration", s(percent(Stats#stats.time, State#state.duration)) ++ " %")),
ok.
@@ -936,12 +1000,24 @@ strings([S|Ss], Out) -> strings(Ss, Out ++ term2string("~ts", [S])).
term2string({M,F,A}) when is_atom(M), is_atom(F), is_integer(A) -> term2string("~p:~p/~p", [M,F,A]);
term2string(Term) when is_port(Term) ->
% ex #Port<6442.816>
- <<_:3/binary, L:16, Node:L/binary, Ids:32, _/binary>> = term_to_binary(Term),
- term2string("#Port<~s.~w>", [Node, Ids]);
+ case term_to_binary(Term) of
+ <<_:2/binary, ?SMALL_ATOM_UTF8_EXT, L:8, Node:L/binary, Ids:32, _/binary>> ->
+ term2string("#Port<~ts.~w>", [Node, Ids]);
+ <<_:2/binary, ?ATOM_UTF8_EXT, L:16, Node:L/binary, Ids:32, _/binary>> ->
+ term2string("#Port<~ts.~w>", [Node, Ids]);
+ <<_:2/binary, ?ATOM_EXT, L:16, Node:L/binary, Ids:32, _/binary>> ->
+ term2string("#Port<~s.~w>", [Node, Ids])
+ end;
term2string(Term) when is_pid(Term) ->
% ex <0.80.0>
- <<_:3/binary, L:16, Node:L/binary, Ids:32, Serial:32, _/binary>> = term_to_binary(Term),
- term2string("<~s.~w.~w>", [Node, Ids, Serial]);
+ case term_to_binary(Term) of
+ <<_:2/binary, ?SMALL_ATOM_UTF8_EXT, L:8, Node:L/binary, Ids:32, Serial:32, _/binary>> ->
+ term2string("<~ts.~w.~w>", [Node, Ids, Serial]);
+ <<_:2/binary, ?ATOM_UTF8_EXT, L:16, Node:L/binary, Ids:32, Serial:32, _/binary>> ->
+ term2string("<~ts.~w.~w>", [Node, Ids, Serial]);
+ <<_:2/binary, ?ATOM_EXT, L:16, Node:L/binary, Ids:32, Serial:32, _/binary>> ->
+ term2string("<~s.~w.~w>", [Node, Ids, Serial])
+ end;
term2string(Term) -> term2string("~w", [Term]).
term2string(Format, Terms) -> lists:flatten(io_lib:format(Format, Terms)).
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-18 12:52:57 +0000