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-rw-r--r--lib/stdlib/doc/src/sys.xml166
-rw-r--r--lib/stdlib/src/gen_fsm.erl154
-rw-r--r--lib/stdlib/src/gen_server.erl53
-rw-r--r--lib/stdlib/src/gen_statem.erl280
-rw-r--r--lib/stdlib/src/otp_internal.erl8
-rw-r--r--lib/stdlib/src/sys.erl150
-rw-r--r--lib/stdlib/test/gen_fsm_SUITE.erl12
-rw-r--r--lib/stdlib/test/gen_statem_SUITE.erl43
-rw-r--r--lib/stdlib/test/stdlib_bench_SUITE.erl57
-rw-r--r--lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl4
-rw-r--r--lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl4
11 files changed, 706 insertions, 225 deletions
diff --git a/lib/stdlib/doc/src/sys.xml b/lib/stdlib/doc/src/sys.xml
index 6fc508b853..c5075f31c5 100644
--- a/lib/stdlib/doc/src/sys.xml
+++ b/lib/stdlib/doc/src/sys.xml
@@ -114,6 +114,154 @@
</datatype>
<datatype>
<name name="system_event"/>
+ <desc>
+ <taglist>
+ <tag><c>{in,<anno>Msg</anno>}</c></tag>
+ <item>
+ <p>
+ Is produced by <c>gen_server</c> and <c>gen_event</c>
+ when the message <c>Msg</c> arrives.
+ </p>
+ </item>
+ <tag><c>{in,<anno>Msg</anno>,<anno>State</anno>}</c></tag>
+ <item>
+ <p>
+ Is produced by <c>gen_statem</c>
+ when the message <c>Msg</c> arrives in state <c>State</c>.
+ </p>
+ <p>
+ For <c>gen_statem</c> the <c><anno>Msg</anno></c> term is
+ an <c>{EventType,EventContent}</c> tuple.
+ </p>
+ </item>
+ <tag><c>{out,<anno>Msg</anno>,<anno>To</anno>}</c></tag>
+ <item>
+ <p>
+ Is produced by <c>gen_statem</c> when the reply <c>Msg</c>
+ is sent back to <c>To</c> by returning
+ a <c>{reply,To,Msg}</c> action from the callback module.
+ </p>
+ <p>
+ <c><anno>To</anno></c> is of the same type
+ as the first argument to <c>gen_statem:reply/2</c>.
+ </p>
+ </item>
+ <tag>
+ <c>{out,<anno>Msg</anno>,<anno>To</anno>,<anno>State</anno>}</c>
+ </tag>
+ <item>
+ <p>
+ Is produced by <c>gen_server</c>
+ when the reply <c><anno>Msg</anno></c>
+ is sent back to <c><anno>To</anno></c>
+ by returning a <c>{reply,...}</c> tuple
+ from the callback module.
+ </p>
+ <p>
+ <c><anno>To</anno></c> is of the same type
+ as the first argument to <c>gen_server:reply/2</c>.
+ </p>
+ <p>
+ <c><anno>State</anno></c> is the new server state.
+ </p>
+ </item>
+ <tag>
+ <c>{noreply,<anno>State</anno>}</c>
+ </tag>
+ <item>
+ <p>
+ Is produced by <c>gen_server</c>
+ when a <c>{noreply,...}</c> tuple is returned
+ from the callback module.
+ </p>
+ <p>
+ <c><anno>State</anno></c> is the new server state.
+ </p>
+ </item>
+ <tag>
+ <c>{continue,<anno>Continuation</anno>}</c>
+ </tag>
+ <item>
+ <p>
+ Is produced by <c>gen_server</c>
+ when a <c>{continue,<anno>Continuation</anno>}</c>
+ tuple is returned from the callback module.
+ </p>
+ </item>
+ <tag>
+ <c>{code_change,<anno>Event</anno>,<anno>State</anno>}</c>
+ </tag>
+ <item>
+ <p>
+ Is produced by <c>gen_statem</c>
+ when the message <c><anno>Event</anno></c>
+ arrives in state <c><anno>State</anno></c>
+ as the first event after a code change.
+ </p>
+ <p>
+ <c><anno>Event</anno></c> is
+ an <c>{EventType,EventContent}</c> tuple.
+ </p>
+ </item>
+ <tag>
+ <c>
+ {postpone,<anno>Event</anno>,<anno>State</anno>,<anno>NextState</anno>}
+ </c>
+ </tag>
+ <item>
+ <p>
+ Is produced by <c>gen_statem</c>
+ when the message <c><anno>Event</anno></c>
+ is postponed in state <c><anno>State</anno></c>.
+ <c><anno>NextState</anno></c> is the new state.
+ </p>
+ <p>
+ <c><anno>Event</anno></c> is
+ an <c>{EventType,EventContent}</c> tuple.
+ </p>
+ </item>
+ <tag>
+ <c>
+ {consume,<anno>Event</anno>,<anno>State</anno>,<anno>NextState</anno>}
+ </c>
+ </tag>
+ <item>
+ <p>
+ Is produced by <c>gen_statem</c>
+ when the message <c><anno>Event</anno></c>
+ is consumed in state <c><anno>State</anno></c>.
+ <c><anno>NextState</anno></c> is the new state.
+ </p>
+ <p>
+ <c><anno>Event</anno></c> is
+ an <c>{EventType,EventContent}</c> tuple.
+ </p>
+ </item>
+ <tag>
+ <c>
+ {enter,<anno>State</anno>}
+ </c>
+ </tag>
+ <item>
+ <p>
+ Is produced by <c>gen_statem</c>
+ when the first state <c><anno>State</anno></c> is entered.
+ </p>
+ </item>
+ <tag>
+ <c>
+ {terminate,<anno>Reason</anno>,<anno>State</anno>}
+ </c>
+ </tag>
+ <item>
+ <p>
+ Is produced by <c>gen_statem</c>
+ when it terminates with reason <c><anno>Reason</anno></c>
+ in state <c><anno>State</anno></c>.
+ </p>
+ </item>
+ </taglist>
+ </desc>
</datatype>
<datatype>
<name name="dbg_opt"/>
@@ -532,6 +680,12 @@
<name name="get_debug" arity="3" since=""/>
<fsummary>Get the data associated with a debug option.</fsummary>
<desc>
+ <warning>
+ <p>
+ <c>get_debug/3</c> is deprecated since it returns
+ data of an internal type only useful for debugging.
+ </p>
+ </warning>
<p>Gets the data associated with a debug option.
<c><anno>Default</anno></c>
is returned if <c><anno>Item</anno></c> is not found. Can be
@@ -605,6 +759,18 @@
</func>
<func>
+ <name name="get_log" arity="1" since="OTP-22.0"/>
+ <fsummary>Return the logged events in the debug structure.</fsummary>
+ <desc>
+ <p>
+ Returns the logged system events in the debug structure,
+ that is the last argument to
+ <seealso marker="#handle_debug/4"><c>handle_debug/4</c></seealso>.
+ </p>
+ </desc>
+ </func>
+
+ <func>
<name since="">Module:system_code_change(Misc, Module, OldVsn, Extra) ->
{ok, NMisc}</name>
<fsummary>Called when the process is to perform a code change.</fsummary>
diff --git a/lib/stdlib/src/gen_fsm.erl b/lib/stdlib/src/gen_fsm.erl
index caaaf8fa2e..1e18710738 100644
--- a/lib/stdlib/src/gen_fsm.erl
+++ b/lib/stdlib/src/gen_fsm.erl
@@ -411,12 +411,13 @@ decode_msg(Msg,Parent, Name, StateName, StateData, Mod, Time, HibernateAfterTime
sys:handle_system_msg(Req, From, Parent, ?MODULE, Debug,
[Name, StateName, StateData, Mod, Time, HibernateAfterTimeout], Hib);
{'EXIT', Parent, Reason} ->
- terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug);
+ terminate(
+ Reason, Name, undefined, Msg, Mod, StateName, StateData, Debug);
_Msg when Debug =:= [] ->
handle_msg(Msg, Parent, Name, StateName, StateData, Mod, Time, HibernateAfterTimeout);
_Msg ->
Debug1 = sys:handle_debug(Debug, fun print_event/3,
- {Name, StateName}, {in, Msg}),
+ Name, {in, Msg, StateName}),
handle_msg(Msg, Parent, Name, StateName, StateData,
Mod, Time, HibernateAfterTimeout, Debug1)
end.
@@ -431,7 +432,7 @@ system_continue(Parent, Debug, [Name, StateName, StateData, Mod, Time, Hibernate
system_terminate(Reason, _Parent, Debug,
[Name, StateName, StateData, Mod, _Time, _HibernateAfterTimeout]) ->
- terminate(Reason, Name, [], Mod, StateName, StateData, Debug).
+ terminate(Reason, Name, undefined, [], Mod, StateName, StateData, Debug).
system_code_change([Name, StateName, StateData, Mod, Time, HibernateAfterTimeout],
_Module, OldVsn, Extra) ->
@@ -452,7 +453,7 @@ system_replace_state(StateFun, [Name, StateName, StateData, Mod, Time, Hibernate
%% Format debug messages. Print them as the call-back module sees
%% them, not as the real erlang messages. Use trace for that.
%%-----------------------------------------------------------------
-print_event(Dev, {in, Msg}, {Name, StateName}) ->
+print_event(Dev, {in, Msg, StateName}, Name) ->
case Msg of
{'$gen_event', Event} ->
io:format(Dev, "*DBG* ~tp got event ~tp in state ~tw~n",
@@ -461,6 +462,16 @@ print_event(Dev, {in, Msg}, {Name, StateName}) ->
io:format(Dev,
"*DBG* ~tp got all_state_event ~tp in state ~tw~n",
[Name, Event, StateName]);
+ {'$gen_sync_event', {From,_Tag}, Event} ->
+ io:format(Dev,
+ "*DBG* ~tp got sync_event ~tp "
+ "from ~tw in state ~tw~n",
+ [Name, Event, From, StateName]);
+ {'$gen_sync_all_state_event', {From,_Tag}, Event} ->
+ io:format(Dev,
+ "*DBG* ~tp got sync_all_state_event ~tp "
+ "from ~tw in state ~tw~n",
+ [Name, Event, From, StateName]);
{timeout, Ref, {'$gen_timer', Message}} ->
io:format(Dev,
"*DBG* ~tp got timer ~tp in state ~tw~n",
@@ -473,11 +484,11 @@ print_event(Dev, {in, Msg}, {Name, StateName}) ->
io:format(Dev, "*DBG* ~tp got ~tp in state ~tw~n",
[Name, Msg, StateName])
end;
-print_event(Dev, {out, Msg, To, StateName}, Name) ->
+print_event(Dev, {out, Msg, {To,_Tag}, StateName}, Name) ->
io:format(Dev, "*DBG* ~tp sent ~tp to ~tw~n"
" and switched to state ~tw~n",
[Name, Msg, To, StateName]);
-print_event(Dev, return, {Name, StateName}) ->
+print_event(Dev, {noreply, StateName}, Name) ->
io:format(Dev, "*DBG* ~tp switched to state ~tw~n",
[Name, StateName]).
@@ -495,9 +506,9 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTi
reply(From, Reply),
loop(Parent, Name, NStateName, NStateData, Mod, Time1, HibernateAfterTimeout, []);
{stop, Reason, NStateData} ->
- terminate(Reason, Name, Msg, Mod, StateName, NStateData, []);
+ terminate(Reason, Name, From, Msg, Mod, StateName, NStateData, []);
{stop, Reason, Reply, NStateData} when From =/= undefined ->
- {'EXIT', R} = (catch terminate(Reason, Name, Msg, Mod,
+ {'EXIT', R} = (catch terminate(Reason, Name, From, Msg, Mod,
StateName, NStateData, [])),
reply(From, Reply),
exit(R);
@@ -510,10 +521,10 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTi
error_logger=>#{tag=>warning_msg}}),
loop(Parent, Name, StateName, StateData, Mod, infinity, HibernateAfterTimeout, []);
{'EXIT', What} ->
- terminate(What, Name, Msg, Mod, StateName, StateData, []);
+ terminate(What, Name, From, Msg, Mod, StateName, StateData, []);
Reply ->
terminate({bad_return_value, Reply},
- Name, Msg, Mod, StateName, StateData, [])
+ Name, From, Msg, Mod, StateName, StateData, [])
end.
handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTimeout, Debug) ->
@@ -521,11 +532,11 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTi
case catch dispatch(Msg, Mod, StateName, StateData) of
{next_state, NStateName, NStateData} ->
Debug1 = sys:handle_debug(Debug, fun print_event/3,
- {Name, NStateName}, return),
+ Name, {noreply, NStateName}),
loop(Parent, Name, NStateName, NStateData, Mod, infinity, HibernateAfterTimeout, Debug1);
{next_state, NStateName, NStateData, Time1} ->
Debug1 = sys:handle_debug(Debug, fun print_event/3,
- {Name, NStateName}, return),
+ Name, {noreply, NStateName}),
loop(Parent, Name, NStateName, NStateData, Mod, Time1, HibernateAfterTimeout, Debug1);
{reply, Reply, NStateName, NStateData} when From =/= undefined ->
Debug1 = reply(Name, From, Reply, Debug, NStateName),
@@ -534,17 +545,18 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, HibernateAfterTi
Debug1 = reply(Name, From, Reply, Debug, NStateName),
loop(Parent, Name, NStateName, NStateData, Mod, Time1, HibernateAfterTimeout, Debug1);
{stop, Reason, NStateData} ->
- terminate(Reason, Name, Msg, Mod, StateName, NStateData, Debug);
+ terminate(
+ Reason, Name, From, Msg, Mod, StateName, NStateData, Debug);
{stop, Reason, Reply, NStateData} when From =/= undefined ->
- {'EXIT', R} = (catch terminate(Reason, Name, Msg, Mod,
+ {'EXIT', R} = (catch terminate(Reason, Name, From, Msg, Mod,
StateName, NStateData, Debug)),
_ = reply(Name, From, Reply, Debug, StateName),
exit(R);
{'EXIT', What} ->
- terminate(What, Name, Msg, Mod, StateName, StateData, Debug);
+ terminate(What, Name, From, Msg, Mod, StateName, StateData, Debug);
Reply ->
terminate({bad_return_value, Reply},
- Name, Msg, Mod, StateName, StateData, Debug)
+ Name, From, Msg, Mod, StateName, StateData, Debug)
end.
dispatch({'$gen_event', Event}, Mod, StateName, StateData) ->
@@ -571,24 +583,25 @@ from(_) -> undefined.
reply({To, Tag}, Reply) ->
catch To ! {Tag, Reply}.
-reply(Name, {To, Tag}, Reply, Debug, StateName) ->
- reply({To, Tag}, Reply),
+reply(Name, From, Reply, Debug, StateName) ->
+ reply(From, Reply),
sys:handle_debug(Debug, fun print_event/3, Name,
- {out, Reply, To, StateName}).
+ {out, Reply, From, StateName}).
%%% ---------------------------------------------------
%%% Terminate the server.
%%% ---------------------------------------------------
--spec terminate(term(), _, _, atom(), _, _, _) -> no_return().
+-spec terminate(term(), _, _, _, atom(), _, _, _) -> no_return().
-terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug) ->
+terminate(Reason, Name, From, Msg, Mod, StateName, StateData, Debug) ->
case erlang:function_exported(Mod, terminate, 3) of
true ->
case catch Mod:terminate(Reason, StateName, StateData) of
{'EXIT', R} ->
FmtStateData = format_status(terminate, Mod, get(), StateData),
- error_info(R, Name, Msg, StateName, FmtStateData, Debug),
+ error_info(
+ R, Name, From, Msg, StateName, FmtStateData, Debug),
exit(R);
_ ->
ok
@@ -605,29 +618,51 @@ terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug) ->
exit(Shutdown);
_ ->
FmtStateData1 = format_status(terminate, Mod, get(), StateData),
- error_info(Reason,Name,Msg,StateName,FmtStateData1,Debug),
+ error_info(
+ Reason, Name, From, Msg, StateName, FmtStateData1, Debug),
exit(Reason)
end.
-error_info(Reason, Name, Msg, StateName, StateData, Debug) ->
+error_info(Reason, Name, From, Msg, StateName, StateData, Debug) ->
+ Log = sys:get_log(Debug),
?LOG_ERROR(#{label=>{gen_fsm,terminate},
name=>Name,
last_message=>Msg,
state_name=>StateName,
state_data=>StateData,
- reason=>Reason},
+ log=>Log,
+ reason=>Reason,
+ client_info=>client_stacktrace(From)},
#{domain=>[otp],
report_cb=>fun gen_fsm:format_log/1,
error_logger=>#{tag=>error}}),
- sys:print_log(Debug),
ok.
+client_stacktrace(undefined) ->
+ undefined;
+client_stacktrace({Pid,_Tag}) ->
+ client_stacktrace(Pid);
+client_stacktrace(Pid) when is_pid(Pid), node(Pid) =:= node() ->
+ case process_info(Pid, [current_stacktrace, registered_name]) of
+ undefined ->
+ {Pid,dead};
+ [{current_stacktrace, Stacktrace}, {registered_name, []}] ->
+ {Pid,{Pid,Stacktrace}};
+ [{current_stacktrace, Stacktrace}, {registered_name, Name}] ->
+ {Pid,{Name,Stacktrace}}
+ end;
+client_stacktrace(Pid) when is_pid(Pid) ->
+ {Pid,remote}.
+
+
format_log(#{label:={gen_fsm,terminate},
name:=Name,
last_message:=Msg,
state_name:=StateName,
state_data:=StateData,
- reason:=Reason}) ->
+ log:=Log,
+ reason:=Reason,
+ client_info:=ClientInfo}) ->
Reason1 =
case Reason of
{undef,[{M,F,A,L}|MFAs]} ->
@@ -645,27 +680,39 @@ format_log(#{label:={gen_fsm,terminate},
_ ->
Reason
end,
+ {ClientFmt,ClientArgs} = format_client_log(ClientInfo),
{"** State machine ~tp terminating \n" ++
get_msg_str(Msg) ++
"** When State == ~tp~n"
"** Data == ~tp~n"
- "** Reason for termination = ~n** ~tp~n",
- [Name, get_msg(Msg), StateName, StateData, Reason1]};
+ "** Reason for termination ==~n** ~tp~n" ++
+ case Log of
+ [] -> [];
+ _ -> "** Log ==~n** ~tp~n"
+ end ++ ClientFmt,
+ [Name|error_logger:limit_term(get_msg(Msg))] ++
+ [StateName,
+ error_logger:limit_term(StateData),
+ error_logger:limit_term(Reason1) |
+ case Log of
+ [] -> [];
+ _ -> [[error_logger:limit_term(D) || D <- Log]]
+ end] ++ ClientArgs};
format_log(#{label:={gen_fsm,no_handle_info},
module:=Mod,
message:=Msg}) ->
{"** Undefined handle_info in ~p~n"
"** Unhandled message: ~tp~n",
- [Mod, Msg]}.
+ [Mod, error_logger:limit_term(Msg)]}.
get_msg_str({'$gen_event', _Event}) ->
"** Last event in was ~tp~n";
-get_msg_str({'$gen_sync_event', _Event}) ->
- "** Last sync event in was ~tp~n";
+get_msg_str({'$gen_sync_event', _From, _Event}) ->
+ "** Last sync event in was ~tp from ~tw~n";
get_msg_str({'$gen_all_state_event', _Event}) ->
"** Last event in was ~tp (for all states)~n";
-get_msg_str({'$gen_sync_all_state_event', _Event}) ->
- "** Last sync event in was ~tp (for all states)~n";
+get_msg_str({'$gen_sync_all_state_event', _From, _Event}) ->
+ "** Last sync event in was ~tp (for all states) from ~tw~n";
get_msg_str({timeout, _Ref, {'$gen_timer', _Msg}}) ->
"** Last timer event in was ~tp~n";
get_msg_str({timeout, _Ref, {'$gen_event', _Msg}}) ->
@@ -673,13 +720,24 @@ get_msg_str({timeout, _Ref, {'$gen_event', _Msg}}) ->
get_msg_str(_Msg) ->
"** Last message in was ~tp~n".
-get_msg({'$gen_event', Event}) -> Event;
-get_msg({'$gen_sync_event', Event}) -> Event;
-get_msg({'$gen_all_state_event', Event}) -> Event;
-get_msg({'$gen_sync_all_state_event', Event}) -> Event;
-get_msg({timeout, Ref, {'$gen_timer', Msg}}) -> {timeout, Ref, Msg};
-get_msg({timeout, _Ref, {'$gen_event', Event}}) -> Event;
-get_msg(Msg) -> Msg.
+get_msg({'$gen_event', Event}) -> [Event];
+get_msg({'$gen_sync_event', {From,_Tag}, Event}) -> [Event,From];
+get_msg({'$gen_all_state_event', Event}) -> [Event];
+get_msg({'$gen_sync_all_state_event', {From,_Tag}, Event}) -> [Event,From];
+get_msg({timeout, Ref, {'$gen_timer', Msg}}) -> [{timeout, Ref, Msg}];
+get_msg({timeout, _Ref, {'$gen_event', Event}}) -> [Event];
+get_msg(Msg) -> [Msg].
+
+format_client_log(undefined) ->
+ {"", []};
+format_client_log({From,dead}) ->
+ {"** Client ~p is dead~n", [From]};
+format_client_log({From,remote}) ->
+ {"** Client ~p is remote on node ~p~n", [From, node(From)]};
+format_client_log({_From,{Name,Stacktrace}}) ->
+ {"** Client ~tp stacktrace~n"
+ "** ~tp~n",
+ [Name, error_logger:limit_term(Stacktrace)]}.
%%-----------------------------------------------------------------
%% Status information
@@ -689,18 +747,18 @@ format_status(Opt, StatusData) ->
StatusData,
Header = gen:format_status_header("Status for state machine",
Name),
- Log = sys:get_debug(log, Debug, []),
- Specfic = format_status(Opt, Mod, PDict, StateData),
- Specfic = case format_status(Opt, Mod, PDict, StateData) of
- S when is_list(S) -> S;
- S -> [S]
- end,
+ Log = sys:get_log(Debug),
+ Specific =
+ case format_status(Opt, Mod, PDict, StateData) of
+ S when is_list(S) -> S;
+ S -> [S]
+ end,
[{header, Header},
{data, [{"Status", SysState},
{"Parent", Parent},
{"Logged events", Log},
{"StateName", StateName}]} |
- Specfic].
+ Specific].
format_status(Opt, Mod, PDict, State) ->
DefStatus = case Opt of
diff --git a/lib/stdlib/src/gen_server.erl b/lib/stdlib/src/gen_server.erl
index 44e9231ebe..c7b6406f54 100644
--- a/lib/stdlib/src/gen_server.erl
+++ b/lib/stdlib/src/gen_server.erl
@@ -773,10 +773,10 @@ handle_common_reply(Reply, Parent, Name, From, Msg, Mod, HibernateAfterTimeout,
terminate({bad_return_value, BadReply}, ?STACKTRACE(), Name, From, Msg, Mod, State, Debug)
end.
-reply(Name, {To, Tag}, Reply, State, Debug) ->
- reply({To, Tag}, Reply),
+reply(Name, From, Reply, State, Debug) ->
+ reply(From, Reply),
sys:handle_debug(Debug, fun print_event/3, Name,
- {out, Reply, To, State} ).
+ {out, Reply, From, State} ).
%%-----------------------------------------------------------------
@@ -810,7 +810,7 @@ system_replace_state(StateFun, [Name, State, Mod, Time, HibernateAfterTimeout])
print_event(Dev, {in, Msg}, Name) ->
case Msg of
{'$gen_call', {From, _Tag}, Call} ->
- io:format(Dev, "*DBG* ~tp got call ~tp from ~w~n",
+ io:format(Dev, "*DBG* ~tp got call ~tp from ~tw~n",
[Name, Call, From]);
{'$gen_cast', Cast} ->
io:format(Dev, "*DBG* ~tp got cast ~tp~n",
@@ -818,8 +818,8 @@ print_event(Dev, {in, Msg}, Name) ->
_ ->
io:format(Dev, "*DBG* ~tp got ~tp~n", [Name, Msg])
end;
-print_event(Dev, {out, Msg, To, State}, Name) ->
- io:format(Dev, "*DBG* ~tp sent ~tp to ~w, new state ~tp~n",
+print_event(Dev, {out, Msg, {To,_Tag}, State}, Name) ->
+ io:format(Dev, "*DBG* ~tp sent ~tp to ~tw, new state ~tp~n",
[Name, Msg, To, State]);
print_event(Dev, {noreply, State}, Name) ->
io:format(Dev, "*DBG* ~tp new state ~tp~n", [Name, State]);
@@ -885,16 +885,17 @@ error_info(_Reason, application_controller, _From, _Msg, _Mod, _State, _Debug) -
%% of it instead
ok;
error_info(Reason, Name, From, Msg, Mod, State, Debug) ->
+ Log = sys:get_log(Debug),
?LOG_ERROR(#{label=>{gen_server,terminate},
name=>Name,
last_message=>Msg,
state=>format_status(terminate, Mod, get(), State),
+ log=>format_log_state(Mod, Log),
reason=>Reason,
client_info=>client_stacktrace(From)},
#{domain=>[otp],
report_cb=>fun gen_server:format_log/1,
error_logger=>#{tag=>error}}),
- sys:print_log(Debug),
ok.
client_stacktrace(undefined) ->
@@ -917,6 +918,7 @@ format_log(#{label:={gen_server,terminate},
name:=Name,
last_message:=Msg,
state:=State,
+ log:=Log,
reason:=Reason,
client_info:=Client}) ->
Reason1 =
@@ -934,20 +936,30 @@ format_log(#{label:={gen_server,terminate},
end
end;
_ ->
- error_logger:limit_term(Reason)
+ Reason
end,
{ClientFmt,ClientArgs} = format_client_log(Client),
+ [LimitedMsg,LimitedState,LimitedReason|LimitedLog] =
+ [error_logger:limit_term(D) || D <- [Msg,State,Reason1|Log]],
{"** Generic server ~tp terminating \n"
"** Last message in was ~tp~n"
"** When Server state == ~tp~n"
- "** Reason for termination == ~n** ~tp~n" ++ ClientFmt,
- [Name, Msg, error_logger:limit_term(State), Reason1] ++ ClientArgs};
+ "** Reason for termination ==~n** ~tp~n" ++
+ case LimitedLog of
+ [] -> [];
+ _ -> "** Log ==~n** ~tp~n"
+ end ++ ClientFmt,
+ [Name, LimitedMsg, LimitedState, LimitedReason] ++
+ case LimitedLog of
+ [] -> [];
+ _ -> [LimitedLog]
+ end ++ ClientArgs};
format_log(#{label:={gen_server,no_handle_info},
module:=Mod,
message:=Msg}) ->
{"** Undefined handle_info in ~p~n"
"** Unhandled message: ~tp~n",
- [Mod, Msg]}.
+ [Mod, error_logger:limit_term(Msg)]}.
format_client_log(undefined) ->
{"", []};
@@ -958,7 +970,7 @@ format_client_log({From,remote}) ->
format_client_log({_From,{Name,Stacktrace}}) ->
{"** Client ~tp stacktrace~n"
"** ~tp~n",
- [Name, Stacktrace]}.
+ [Name, error_logger:limit_term(Stacktrace)]}.
%%-----------------------------------------------------------------
%% Status information
@@ -966,16 +978,25 @@ format_client_log({_From,{Name,Stacktrace}}) ->
format_status(Opt, StatusData) ->
[PDict, SysState, Parent, Debug, [Name, State, Mod, _Time, _HibernateAfterTimeout]] = StatusData,
Header = gen:format_status_header("Status for generic server", Name),
- Log = sys:get_debug(log, Debug, []),
- Specfic = case format_status(Opt, Mod, PDict, State) of
+ Log = sys:get_log(Debug),
+ Specific = case format_status(Opt, Mod, PDict, State) of
S when is_list(S) -> S;
S -> [S]
end,
[{header, Header},
{data, [{"Status", SysState},
{"Parent", Parent},
- {"Logged events", Log}]} |
- Specfic].
+ {"Logged events", format_log_state(Mod, Log)}]} |
+ Specific].
+
+format_log_state(Mod, Log) ->
+ [case Event of
+ {out,Msg,From,State} ->
+ {out,Msg,From,format_status(terminate, Mod, get(), State)};
+ {noreply,State} ->
+ {noreply,format_status(terminate, Mod, get(), State)};
+ _ -> Event
+ end || Event <- Log].
format_status(Opt, Mod, PDict, State) ->
DefStatus = case Opt of
diff --git a/lib/stdlib/src/gen_statem.erl b/lib/stdlib/src/gen_statem.erl
index 24b268cd38..6f1f6a0228 100644
--- a/lib/stdlib/src/gen_statem.erl
+++ b/lib/stdlib/src/gen_statem.erl
@@ -586,7 +586,12 @@ enter_loop(Module, Opts, State, Data, Server_or_Actions) ->
enter_loop(Module, Opts, State, Data, Server, Actions) ->
is_atom(Module) orelse error({atom,Module}),
Parent = gen:get_parent(),
- enter(Module, Opts, State, Data, Server, Actions, Parent).
+ Name = gen:get_proc_name(Server),
+ Debug = gen:debug_options(Name, Opts),
+ HibernateAfterTimeout = gen:hibernate_after(Opts),
+ enter(
+ Parent, Debug, Module, Name, HibernateAfterTimeout,
+ State, Data, Actions).
%%---------------------------------------------------------------------------
%% API helpers
@@ -658,11 +663,10 @@ send(Proc, Msg) ->
ok.
%% Here the init_it/6 and enter_loop/5,6,7 functions converge
-enter(Module, Opts, State, Data, Server, Actions, Parent) ->
+enter(
+ Parent, Debug, Module, Name, HibernateAfterTimeout,
+ State, Data, Actions) ->
%% The values should already have been type checked
- Name = gen:get_proc_name(Server),
- Debug = gen:debug_options(Name, Opts),
- HibernateAfterTimeout = gen:hibernate_after(Opts),
Events = [],
Event = {internal,init_state},
%% We enforce {postpone,false} to ensure that
@@ -676,7 +680,7 @@ enter(Module, Opts, State, Data, Server, Actions, Parent) ->
data = Data,
hibernate_after = HibernateAfterTimeout},
CallEnter = true,
- NewDebug = ?sys_debug(Debug, {Name,State}, {enter,Event,State}),
+ NewDebug = ?sys_debug(Debug, Name, {enter,State}),
case call_callback_mode(S) of
#state{} = NewS ->
loop_event_actions_list(
@@ -695,18 +699,24 @@ enter(Module, Opts, State, Data, Server, Actions, Parent) ->
init_it(Starter, self, ServerRef, Module, Args, Opts) ->
init_it(Starter, self(), ServerRef, Module, Args, Opts);
init_it(Starter, Parent, ServerRef, Module, Args, Opts) ->
+ Name = gen:get_proc_name(ServerRef),
+ Debug = gen:debug_options(Name, Opts),
+ HibernateAfterTimeout = gen:hibernate_after(Opts),
try Module:init(Args) of
Result ->
- init_result(Starter, Parent, ServerRef, Module, Result, Opts)
+ init_result(
+ Starter, Parent, ServerRef, Module, Result,
+ Name, Debug, HibernateAfterTimeout)
catch
Result ->
- init_result(Starter, Parent, ServerRef, Module, Result, Opts);
+ init_result(
+ Starter, Parent, ServerRef, Module, Result,
+ Name, Debug, HibernateAfterTimeout);
Class:Reason:Stacktrace ->
- Name = gen:get_proc_name(ServerRef),
gen:unregister_name(ServerRef),
proc_lib:init_ack(Starter, {error,Reason}),
error_info(
- Class, Reason, Stacktrace,
+ Class, Reason, Stacktrace, Debug,
#state{name = Name},
[]),
erlang:raise(Class, Reason, Stacktrace)
@@ -715,14 +725,20 @@ init_it(Starter, Parent, ServerRef, Module, Args, Opts) ->
%%---------------------------------------------------------------------------
%% gen callbacks helpers
-init_result(Starter, Parent, ServerRef, Module, Result, Opts) ->
+init_result(
+ Starter, Parent, ServerRef, Module, Result,
+ Name, Debug, HibernateAfterTimeout) ->
case Result of
{ok,State,Data} ->
proc_lib:init_ack(Starter, {ok,self()}),
- enter(Module, Opts, State, Data, ServerRef, [], Parent);
+ enter(
+ Parent, Debug, Module, Name, HibernateAfterTimeout,
+ State, Data, []);
{ok,State,Data,Actions} ->
proc_lib:init_ack(Starter, {ok,self()}),
- enter(Module, Opts, State, Data, ServerRef, Actions, Parent);
+ enter(
+ Parent, Debug, Module, Name, HibernateAfterTimeout,
+ State, Data, Actions);
{stop,Reason} ->
gen:unregister_name(ServerRef),
proc_lib:init_ack(Starter, {error,Reason}),
@@ -732,12 +748,11 @@ init_result(Starter, Parent, ServerRef, Module, Result, Opts) ->
proc_lib:init_ack(Starter, ignore),
exit(normal);
_ ->
- Name = gen:get_proc_name(ServerRef),
gen:unregister_name(ServerRef),
Error = {bad_return_from_init,Result},
proc_lib:init_ack(Starter, {error,Error}),
error_info(
- error, Error, ?STACKTRACE(),
+ error, Error, ?STACKTRACE(), Debug,
#state{name = Name},
[]),
exit(Error)
@@ -792,7 +807,7 @@ format_status(
[PDict,SysState,Parent,Debug,
#state{name = Name, postponed = P} = S]) ->
Header = gen:format_status_header("Status for state machine", Name),
- Log = sys:get_debug(log, Debug, []),
+ Log = sys:get_log(Debug),
[{header,Header},
{data,
[{"Status",SysState},
@@ -812,34 +827,46 @@ format_status(
sys_debug(Debug, NameState, Entry) ->
sys:handle_debug(Debug, fun print_event/3, NameState, Entry).
-print_event(Dev, {in,Event}, {Name,State}) ->
- io:format(
- Dev, "*DBG* ~tp receive ~ts in state ~tp~n",
- [Name,event_string(Event),State]);
-print_event(Dev, {out,Reply,{To,_Tag}}, {Name,State}) ->
- io:format(
- Dev, "*DBG* ~tp send ~tp to ~p from state ~tp~n",
- [Name,Reply,To,State]);
-print_event(Dev, {terminate,Reason}, {Name,State}) ->
- io:format(
- Dev, "*DBG* ~tp terminate ~tp in state ~tp~n",
- [Name,Reason,State]);
-print_event(Dev, {Tag,Event,NextState}, {Name,State}) ->
- StateString =
- case NextState of
- State ->
- io_lib:format("~tp", [State]);
- _ ->
- io_lib:format("~tp => ~tp", [State,NextState])
- end,
- io:format(
- Dev, "*DBG* ~tp ~tw ~ts in state ~ts~n",
- [Name,Tag,event_string(Event),StateString]).
+print_event(Dev, SystemEvent, Name) ->
+ case SystemEvent of
+ {in,Event,State} ->
+ io:format(
+ Dev, "*DBG* ~tp receive ~ts in state ~tp~n",
+ [Name,event_string(Event),State]);
+ {code_change,Event,State} ->
+ io:format(
+ Dev, "*DBG* ~tp receive ~ts after code change in state ~tp~n",
+ [Name,event_string(Event),State]);
+ {out,Reply,{To,_Tag}} ->
+ io:format(
+ Dev, "*DBG* ~tp send ~tp to ~tw~n",
+ [Name,Reply,To]);
+ {enter,State} ->
+ io:format(
+ Dev, "*DBG* ~tp enter in state ~tp~n",
+ [Name,State]);
+ {terminate,Reason,State} ->
+ io:format(
+ Dev, "*DBG* ~tp terminate ~tp in state ~tp~n",
+ [Name,Reason,State]);
+ {Tag,Event,State,NextState}
+ when Tag =:= postpone; Tag =:= consume ->
+ StateString =
+ case NextState of
+ State ->
+ io_lib:format("~tp", [State]);
+ _ ->
+ io_lib:format("~tp => ~tp", [State,NextState])
+ end,
+ io:format(
+ Dev, "*DBG* ~tp ~tw ~ts in state ~ts~n",
+ [Name,Tag,event_string(Event),StateString])
+ end.
event_string(Event) ->
case Event of
{{call,{Pid,_Tag}},Request} ->
- io_lib:format("call ~tp from ~w", [Request,Pid]);
+ io_lib:format("call ~tp from ~tw", [Request,Pid]);
{EventType,EventContent} ->
io_lib:format("~tw ~tp", [EventType,EventContent])
end.
@@ -981,7 +1008,14 @@ loop_receive_result(Parent, ?not_sys_debug, S, Type, Content) ->
loop_event(Parent, ?not_sys_debug, S, Events, Type, Content);
loop_receive_result(
Parent, Debug, #state{name = Name, state = State} = S, Type, Content) ->
- NewDebug = sys_debug(Debug, {Name,State}, {in,{Type,Content}}),
+ Event = {Type,Content},
+ NewDebug =
+ case S#state.callback_mode of
+ undefined ->
+ sys_debug(Debug, Name, {code_change,Event,State});
+ _ ->
+ sys_debug(Debug, Name, {in,Event,State})
+ end,
%% Here is the queue of not yet handled events created
Events = [],
loop_event(Parent, NewDebug, S, Events, Type, Content).
@@ -1291,13 +1325,13 @@ parse_actions_reply(
?STACKTRACE(), Debug]
end;
parse_actions_reply(
- StateCall, Debug, #state{name = Name, state = State} = S,
+ StateCall, Debug, #state{name = Name} = S,
Actions, TransOpts, From, Reply) ->
%%
case from(From) of
true ->
reply(From, Reply),
- NewDebug = sys_debug(Debug, {Name,State}, {out,Reply,From}),
+ NewDebug = sys_debug(Debug, Name, {out,Reply,From}),
parse_actions(StateCall, NewDebug, S, Actions, TransOpts);
false ->
[error,
@@ -1326,7 +1360,7 @@ parse_actions_next_event(
Actions, TransOpts, Type, Content) ->
case event_type(Type) of
true when StateCall ->
- NewDebug = sys_debug(Debug, {Name,State}, {in,{Type,Content}}),
+ NewDebug = sys_debug(Debug, Name, {in,{Type,Content},State}),
NextEventsR = TransOpts#trans_opts.next_events_r,
parse_actions(
StateCall, NewDebug, S, Actions,
@@ -1443,14 +1477,14 @@ loop_event_done(
true ->
[?sys_debug(
Debug_0,
- {S#state.name,State},
- {postpone,Event_0,NextState}),
+ S#state.name,
+ {postpone,Event_0,State,NextState}),
Event_0|P_0];
false ->
[?sys_debug(
Debug_0,
- {S#state.name,State},
- {consume,Event_0,NextState})|P_0]
+ S#state.name,
+ {consume,Event_0,State,NextState})|P_0]
end,
{Events_2,P_2,
Timers_2} =
@@ -1475,9 +1509,11 @@ loop_event_done(
%% Place next events last in reversed queue
Events_3R = lists:reverse(Events_2, NextEventsR),
%% Enqueue immediate timeout events
- Events_4R = prepend_timeout_events(TimeoutEvents, Events_3R),
+ [Debug_2|Events_4R] =
+ prepend_timeout_events(
+ NextState, Debug_1, S, TimeoutEvents, Events_3R),
loop_event_done(
- Parent, Debug_1,
+ Parent, Debug_2,
S#state{
state = NextState,
data = NewData,
@@ -1814,22 +1850,31 @@ parse_timers(
%% so if there are enqueued events before the event timer
%% timeout 0 event - the event timer is cancelled hence no event.
%%
-%% Other (state_timeout) timeout 0 events that are after
-%% the event timer timeout 0 events are considered to
+%% Other (state_timeout and {timeout,Name}) timeout 0 events
+%% that are after an event timer timeout 0 event are considered to
%% belong to timers that were started after the event timer
%% timeout 0 event fired, so they do not cancel the event timer.
%%
-prepend_timeout_events([], EventsR) ->
- EventsR;
-prepend_timeout_events([{timeout,_} = TimeoutEvent|TimeoutEvents], []) ->
- prepend_timeout_events(TimeoutEvents, [TimeoutEvent]);
-prepend_timeout_events([{timeout,_}|TimeoutEvents], EventsR) ->
+prepend_timeout_events(_NextState, Debug, _S, [], EventsR) ->
+ [Debug|EventsR];
+prepend_timeout_events(
+ NextState, Debug, S, [{timeout,_} = TimeoutEvent|TimeoutEvents], []) ->
+ prepend_timeout_events(
+ NextState,
+ sys_debug(Debug, S#state.name, {in,TimeoutEvent,NextState}),
+ S, TimeoutEvents, [TimeoutEvent]);
+prepend_timeout_events(
+ NextState, Debug, S, [{timeout,_}|TimeoutEvents], EventsR) ->
%% Ignore since there are other events in queue
%% so they have cancelled the event timeout 0.
- prepend_timeout_events(TimeoutEvents, EventsR);
-prepend_timeout_events([TimeoutEvent|TimeoutEvents], EventsR) ->
+ prepend_timeout_events(NextState, Debug, S, TimeoutEvents, EventsR);
+prepend_timeout_events(
+ NextState, Debug, S, [TimeoutEvent|TimeoutEvents], EventsR) ->
%% Just prepend all others
- prepend_timeout_events(TimeoutEvents, [TimeoutEvent|EventsR]).
+ prepend_timeout_events(
+ NextState,
+ sys_debug(Debug, S#state.name, {in,TimeoutEvent,NextState}),
+ S, TimeoutEvents, [TimeoutEvent|EventsR]).
@@ -1846,18 +1891,24 @@ do_reply_then_terminate(
do_reply_then_terminate(
Class, Reason, Stacktrace, Debug, S, Q, [R|Rs]) ->
case R of
- {reply,{_To,_Tag}=From,Reply} ->
- reply(From, Reply),
- NewDebug =
- ?sys_debug(
- Debug,
- begin
- #state{name = Name, state = State} = S,
- {Name,State}
- end,
- {out,Reply,From}),
- do_reply_then_terminate(
- Class, Reason, Stacktrace, NewDebug, S, Q, Rs);
+ {reply,From,Reply} ->
+ case from(From) of
+ true ->
+ reply(From, Reply),
+ NewDebug =
+ ?sys_debug(
+ Debug,
+ S#state.name,
+ {out,Reply,From}),
+ do_reply_then_terminate(
+ Class, Reason, Stacktrace, NewDebug, S, Q, Rs);
+ false ->
+ terminate(
+ error,
+ {bad_reply_action_from_state_function,R},
+ ?STACKTRACE(),
+ Debug, S, Q)
+ end;
_ ->
terminate(
error,
@@ -1877,8 +1928,7 @@ terminate(
catch
_ -> ok;
C:R:ST ->
- error_info(C, R, ST, S, Q),
- sys:print_log(Debug),
+ error_info(C, R, ST, Debug, S, Q),
erlang:raise(C, R, ST)
end;
false ->
@@ -1893,8 +1943,7 @@ terminate(
{shutdown,_} ->
terminate_sys_debug(Debug, S, State, Reason);
_ ->
- error_info(Class, Reason, Stacktrace, S, Q),
- sys:print_log(Debug)
+ error_info(Class, Reason, Stacktrace, Debug, S, Q)
end,
case Stacktrace of
[] ->
@@ -1904,17 +1953,18 @@ terminate(
end.
terminate_sys_debug(Debug, S, State, Reason) ->
- ?sys_debug(Debug, {S#state.name,State}, {terminate,Reason}).
+ ?sys_debug(Debug, S#state.name, {terminate,Reason,State}).
error_info(
- Class, Reason, Stacktrace,
+ Class, Reason, Stacktrace, Debug,
#state{
name = Name,
callback_mode = CallbackMode,
state_enter = StateEnter,
postponed = P} = S,
Q) ->
+ Log = sys:get_log(Debug),
?LOG_ERROR(#{label=>{gen_statem,terminate},
name=>Name,
queue=>Q,
@@ -1922,11 +1972,37 @@ error_info(
callback_mode=>CallbackMode,
state_enter=>StateEnter,
state=>format_status(terminate, get(), S),
- reason=>{Class,Reason,Stacktrace}},
+ log=>Log,
+ reason=>{Class,Reason,Stacktrace},
+ client_info=>client_stacktrace(Q)},
#{domain=>[otp],
report_cb=>fun gen_statem:format_log/1,
error_logger=>#{tag=>error}}).
+client_stacktrace([]) ->
+ undefined;
+client_stacktrace([{{call,{Pid,_Tag}},_Req}|_]) when is_pid(Pid) ->
+ if
+ node(Pid) =:= node() ->
+ case
+ process_info(Pid, [current_stacktrace, registered_name])
+ of
+ undefined ->
+ {Pid,dead};
+ [{current_stacktrace, Stacktrace},
+ {registered_name, []}] ->
+ {Pid,{Pid,Stacktrace}};
+ [{current_stacktrace, Stacktrace},
+ {registered_name, Name}] ->
+ {Pid,{Name,Stacktrace}}
+ end;
+ true ->
+ {Pid,remote}
+ end;
+client_stacktrace([_|_]) ->
+ undefined.
+
+
format_log(#{label:={gen_statem,terminate},
name:=Name,
queue:=Q,
@@ -1934,7 +2010,9 @@ format_log(#{label:={gen_statem,terminate},
callback_mode:=CallbackMode,
state_enter:=StateEnter,
state:=FmtData,
- reason:={Class,Reason,Stacktrace}}) ->
+ log:=Log,
+ reason:={Class,Reason,Stacktrace},
+ client_info:=ClientInfo}) ->
{FixedReason,FixedStacktrace} =
case Stacktrace of
[{M,F,Args,_}|ST]
@@ -1954,14 +2032,12 @@ format_log(#{label:={gen_statem,terminate},
true ->
{Reason,Stacktrace};
false ->
- {{'function not exported',{M,F,Arity}},
- ST}
+ {{'function not exported',{M,F,Arity}},ST}
end
end;
_ -> {Reason,Stacktrace}
end,
- [LimitedP, LimitedFmtData, LimitedFixedReason] =
- [error_logger:limit_term(D) || D <- [P, FmtData, FixedReason]],
+ {ClientFmt,ClientArgs} = format_client_log(ClientInfo),
CBMode =
case StateEnter of
true ->
@@ -1988,27 +2064,47 @@ format_log(#{label:={gen_statem,terminate},
case FixedStacktrace of
[] -> "";
_ -> "** Stacktrace =~n** ~tp~n"
- end,
+ end ++
+ case Log of
+ [] -> "";
+ _ -> "** Log =~n** ~tp~n"
+ end ++ ClientFmt,
[Name |
case Q of
[] -> [];
- [Event|_] -> [Event]
+ [Event|_] -> [error_logger:limit_term(Event)]
end] ++
- [LimitedFmtData,
- Class,LimitedFixedReason,
+ [error_logger:limit_term(FmtData),
+ Class,error_logger:limit_term(FixedReason),
CBMode] ++
case Q of
- [_|[_|_] = Events] -> [Events];
+ [_|[_|_] = Events] -> [error_logger:limit_term(Events)];
_ -> []
end ++
case P of
[] -> [];
- _ -> [LimitedP]
+ _ -> [error_logger:limit_term(P)]
end ++
case FixedStacktrace of
[] -> [];
- _ -> [FixedStacktrace]
- end}.
+ _ -> [error_logger:limit_term(FixedStacktrace)]
+ end ++
+ case Log of
+ [] -> [];
+ _ -> [[error_logger:limit_term(T) || T <- Log]]
+ end ++ ClientArgs}.
+
+format_client_log(undefined) ->
+ {"", []};
+format_client_log({Pid,dead}) ->
+ {"** Client ~p is dead~n", [Pid]};
+format_client_log({Pid,remote}) ->
+ {"** Client ~p is remote on node ~p~n", [Pid, node(Pid)]};
+format_client_log({_Pid,{Name,Stacktrace}}) ->
+ {"** Client ~tp stacktrace~n"
+ "** ~tp~n",
+ [Name, error_logger:limit_term(Stacktrace)]}.
+
%% Call Module:format_status/2 or return a default value
format_status(
diff --git a/lib/stdlib/src/otp_internal.erl b/lib/stdlib/src/otp_internal.erl
index 2cfc702b53..f2b50c354a 100644
--- a/lib/stdlib/src/otp_internal.erl
+++ b/lib/stdlib/src/otp_internal.erl
@@ -55,6 +55,14 @@ obsolete_1(erlang, now, 0) ->
obsolete_1(calendar, local_time_to_universal_time, 1) ->
{deprecated, {calendar, local_time_to_universal_time_dst, 1}};
+%% *** STDLIB added in OTP 22 ***
+
+obsolete_1(sys, get_debug, 3) ->
+ {deprecated,
+ "Deprecated function. "
+ "Incorrectly documented and in fact only for internal use. "
+ "Can often be replaced with sys:get_log/1."};
+
%% *** STDLIB added in OTP 20 ***
obsolete_1(gen_fsm, start, 3) ->
diff --git a/lib/stdlib/src/sys.erl b/lib/stdlib/src/sys.erl
index 0064414d6f..a04195c9ed 100644
--- a/lib/stdlib/src/sys.erl
+++ b/lib/stdlib/src/sys.erl
@@ -30,7 +30,8 @@
log_to_file/2, log_to_file/3, no_debug/1, no_debug/2,
install/2, install/3, remove/2, remove/3]).
-export([handle_system_msg/6, handle_system_msg/7, handle_debug/4,
- print_log/1, get_debug/3, debug_options/1, suspend_loop_hib/6]).
+ print_log/1, get_log/1, get_debug/3, debug_options/1, suspend_loop_hib/6]).
+-deprecated([{get_debug,3,eventually}]).
%%-----------------------------------------------------------------
%% Types
@@ -42,10 +43,17 @@
| {'global', term()}
| {'via', module(), term()}.
-type system_event() :: {'in', Msg :: _}
- | {'in', Msg :: _, From :: _}
+ | {'in', Msg :: _, State :: _}
| {'out', Msg :: _, To :: _}
| {'out', Msg :: _, To :: _, State :: _}
- | term().
+ | {'noreply', State :: _}
+ | {'continue', Continuation :: _}
+ | {'code_change', Event :: _, State :: _}
+ | {'postpone', Event :: _, State :: _, NextState :: _}
+ | {'consume', Event :: _, State :: _, NextState :: _}
+ | {'enter', State :: _}
+ | {'terminate', Reason :: _, State :: _}
+ | term().
-opaque dbg_opt() :: {'trace', 'true'}
| {'log',
{N :: non_neg_integer(),
@@ -385,31 +393,41 @@ handle_system_msg(SysState, Msg, From, Parent, Mod, Debug, Misc, Hib) ->
FormFunc :: format_fun(),
Extra :: term(),
Event :: system_event().
-handle_debug([{trace, true} | T], FormFunc, State, Event) ->
+handle_debug([{trace, true} = DbgOpt | T], FormFunc, State, Event) ->
print_event({Event, State, FormFunc}),
- [{trace, true} | handle_debug(T, FormFunc, State, Event)];
-handle_debug([{log, {N, LogData}} | T], FormFunc, State, Event) ->
- NLogData = [{Event, State, FormFunc} | trim(N, LogData)],
- [{log, {N, NLogData}} | handle_debug(T, FormFunc, State, Event)];
-handle_debug([{log_to_file, Fd} | T], FormFunc, State, Event) ->
+ [DbgOpt | handle_debug(T, FormFunc, State, Event)];
+handle_debug([{log, NLog} | T], FormFunc, State, Event) ->
+ Item = {Event, State, FormFunc},
+ [{log, nlog_put(Item, NLog)} | handle_debug(T, FormFunc, State, Event)];
+handle_debug([{log_to_file, Fd} = DbgOpt | T], FormFunc, State, Event) ->
print_event(Fd, {Event, State, FormFunc}),
- [{log_to_file, Fd} | handle_debug(T, FormFunc, State, Event)];
+ [DbgOpt | handle_debug(T, FormFunc, State, Event)];
handle_debug([{statistics, StatData} | T], FormFunc, State, Event) ->
NStatData = stat(Event, StatData),
[{statistics, NStatData} | handle_debug(T, FormFunc, State, Event)];
handle_debug([{FuncId, {Func, FuncState}} | T], FormFunc, State, Event) ->
- case catch Func(FuncState, Event, State) of
+ try Func(FuncState, Event, State) of
done -> handle_debug(T, FormFunc, State, Event);
- {'EXIT', _} -> handle_debug(T, FormFunc, State, Event);
NFuncState ->
- [{FuncId, {Func, NFuncState}} | handle_debug(T, FormFunc, State, Event)]
+ [{FuncId, {Func, NFuncState}} |
+ handle_debug(T, FormFunc, State, Event)]
+ catch
+ done -> handle_debug(T, FormFunc, State, Event);
+ NFuncState ->
+ [{FuncId, {Func, NFuncState}} |
+ handle_debug(T, FormFunc, State, Event)];
+ _:_ -> handle_debug(T, FormFunc, State, Event)
end;
handle_debug([{Func, FuncState} | T], FormFunc, State, Event) ->
- case catch Func(FuncState, Event, State) of
+ try Func(FuncState, Event, State) of
done -> handle_debug(T, FormFunc, State, Event);
- {'EXIT', _} -> handle_debug(T, FormFunc, State, Event);
- NFuncState ->
+ NFuncState ->
[{Func, NFuncState} | handle_debug(T, FormFunc, State, Event)]
+ catch
+ done -> handle_debug(T, FormFunc, State, Event);
+ NFuncState ->
+ [{Func, NFuncState} | handle_debug(T, FormFunc, State, Event)];
+ _:_ -> handle_debug(T, FormFunc, State, Event)
end;
handle_debug([], _FormFunc, _State, _Event) ->
[].
@@ -526,19 +544,19 @@ debug_cmd({trace, true}, Debug) ->
debug_cmd({trace, false}, Debug) ->
{ok, remove_debug(trace, Debug)};
debug_cmd({log, true}, Debug) ->
- {_N, Logs} = get_debug(log, Debug, {0, []}),
- {ok, install_debug(log, {10, trim(10, Logs)}, Debug)};
-debug_cmd({log, {true, N}}, Debug) when is_integer(N), N > 0 ->
- {_N, Logs} = get_debug(log, Debug, {0, []}),
- {ok, install_debug(log, {N, trim(N, Logs)}, Debug)};
+ NLog = get_debug(log, Debug, nlog_new()),
+ {ok, install_debug(log, nlog_new(NLog), Debug)};
+debug_cmd({log, {true, N}}, Debug) when is_integer(N), 1 =< N ->
+ NLog = get_debug(log, Debug, nlog_new(N)),
+ {ok, install_debug(log, nlog_new(N, NLog), Debug)};
debug_cmd({log, false}, Debug) ->
{ok, remove_debug(log, Debug)};
debug_cmd({log, print}, Debug) ->
print_log(Debug),
{ok, Debug};
debug_cmd({log, get}, Debug) ->
- {_N, Logs} = get_debug(log, Debug, {0, []}),
- {{ok, lists:reverse(Logs)}, Debug};
+ NLog = get_debug(log, Debug, nlog_new()),
+ {{ok, [Event || {Event, _State, _FormFunc} <- nlog_get(NLog)]}, Debug};
debug_cmd({log_to_file, false}, Debug) ->
NDebug = close_log_file(Debug),
{ok, NDebug};
@@ -595,9 +613,6 @@ stat({out, _Msg, _To}, {Time, Reds, In, Out}) -> {Time, Reds, In, Out+1};
stat({out, _Msg, _To, _State}, {Time, Reds, In, Out}) -> {Time, Reds, In, Out+1};
stat(_, StatData) -> StatData.
-trim(N, LogData) ->
- lists:sublist(LogData, 1, N-1).
-
%%-----------------------------------------------------------------
%% Debug structure manipulating functions
%%-----------------------------------------------------------------
@@ -625,9 +640,14 @@ get_debug2(Item, Debug, Default) ->
-spec print_log(Debug) -> 'ok' when
Debug :: [dbg_opt()].
print_log(Debug) ->
- {_N, Logs} = get_debug(log, Debug, {0, []}),
- lists:foreach(fun print_event/1,
- lists:reverse(Logs)).
+ NLog = get_debug(log, Debug, nlog_new()),
+ lists:foreach(fun print_event/1, nlog_get(NLog)).
+
+-spec get_log(Debug) -> [system_event()] when
+ Debug :: [dbg_opt()].
+get_log(Debug) ->
+ NLog = get_debug(log, Debug, nlog_new()),
+ [Event || {Event, _State, _FormFunc} <- nlog_get(NLog)].
close_log_file(Debug) ->
case get_debug2(log_to_file, Debug, []) of
@@ -639,6 +659,74 @@ close_log_file(Debug) ->
end.
%%-----------------------------------------------------------------
+%% Keep the last N Log functions
+%%-----------------------------------------------------------------
+%%
+%% Streamlined Okasaki queue as base for "keep the last N" log.
+%%
+%% To the reverse list head we cons new items.
+%% The forward list contains elements in insertion order,
+%% so the head is the oldest and the one to drop off
+%% when the log is full.
+%%
+%% Here is how we can get away with only using one cons cell
+%% to wrap the forward and reverse list, and the log size:
+%%
+%% A full log does not need a counter; we just cons one
+%% and drop one:
+%%
+%% [ReverseList|ForwardList]
+%%
+%% A non-full log is filling up to N elements;
+%% use a down counter instead of a list as first element:
+%%
+%% [RemainingToFullCount|ReverseList]
+
+nlog_new() ->
+ nlog_new(10).
+%%
+nlog_new([_|_] = NLog) ->
+ nlog_new(10, NLog);
+nlog_new(N) ->
+ [N]. % Empty log size N >= 1
+%%
+nlog_new(N, NLog) ->
+ lists:foldl(
+ fun (Item, NL) -> nlog_put(Item, NL) end,
+ nlog_new(N),
+ nlog_get(NLog)).
+
+%%
+nlog_put(Item, NLog) ->
+ case NLog of
+ [R|FF] when is_list(R) ->
+ %% Full log
+ case FF of
+ [_|F] ->
+ %% Cons to reverse list, drop from forward list
+ [[Item|R]|F];
+ [] ->
+ %% Create new forward list from reverse list,
+ %% create new empty reverse list
+ [_|F] = lists:reverse(R, [Item]),
+ [[]|F]
+ end;
+ [1|R] ->
+ %% Log now gets full
+ [[Item|R]];
+ [J|R] ->
+ %% Filling up to N elements
+ [J - 1,Item|R]
+ end.
+
+nlog_get([[]|F]) ->
+ F;
+nlog_get([[_|_] = R|F]) ->
+ F ++ lists:reverse(R);
+nlog_get([_J|R]) ->
+ lists:reverse(R).
+
+%%-----------------------------------------------------------------
%% Func: debug_options/1
%% Purpose: Initiate a debug structure. Called by a process that
%% wishes to initiate the debug structure without the
@@ -665,9 +753,9 @@ debug_options(Options) ->
debug_options([trace | T], Debug) ->
debug_options(T, install_debug(trace, true, Debug));
debug_options([log | T], Debug) ->
- debug_options(T, install_debug(log, {10, []}, Debug));
+ debug_options(T, install_debug(log, nlog_new(), Debug));
debug_options([{log, N} | T], Debug) when is_integer(N), N > 0 ->
- debug_options(T, install_debug(log, {N, []}, Debug));
+ debug_options(T, install_debug(log, nlog_new(N), Debug));
debug_options([statistics | T], Debug) ->
debug_options(T, install_debug(statistics, init_stat(), Debug));
debug_options([{log_to_file, FileName} | T], Debug) ->
diff --git a/lib/stdlib/test/gen_fsm_SUITE.erl b/lib/stdlib/test/gen_fsm_SUITE.erl
index a8264e5a84..62d9d0e0ae 100644
--- a/lib/stdlib/test/gen_fsm_SUITE.erl
+++ b/lib/stdlib/test/gen_fsm_SUITE.erl
@@ -521,14 +521,16 @@ error_format_status(Config) when is_list(Config) ->
error_logger_forwarder:register(),
OldFl = process_flag(trap_exit, true),
StateData = "called format_status",
+ Parent = self(),
{ok, Pid} = gen_fsm:start(gen_fsm_SUITE, {state_data, StateData}, []),
%% bad return value in the gen_fsm loop
{'EXIT',{{bad_return_value, badreturn},_}} =
(catch gen_fsm:sync_send_event(Pid, badreturn)),
receive
{error,_GroupLeader,{Pid,
- "** State machine"++_,
- [Pid,{_,_,badreturn},idle,{formatted,StateData},_]}} ->
+ "** State machine "++_,
+ [Pid,badreturn,Parent,idle,{formatted,StateData},
+ {bad_return_value,badreturn}|_]}} ->
ok;
Other ->
io:format("Unexpected: ~p", [Other]),
@@ -541,12 +543,14 @@ terminate_crash_format(Config) when is_list(Config) ->
error_logger_forwarder:register(),
OldFl = process_flag(trap_exit, true),
StateData = crash_terminate,
+ Parent = self(),
{ok, Pid} = gen_fsm:start(gen_fsm_SUITE, {state_data, StateData}, []),
stop_it(Pid),
receive
{error,_GroupLeader,{Pid,
- "** State machine"++_,
- [Pid,{_,_,_},idle,{formatted, StateData},_]}} ->
+ "** State machine "++_,
+ [Pid,stop,Parent,idle,{formatted, StateData},
+ {crash,terminate}|_]}} ->
ok;
Other ->
io:format("Unexpected: ~p", [Other]),
diff --git a/lib/stdlib/test/gen_statem_SUITE.erl b/lib/stdlib/test/gen_statem_SUITE.erl
index 017939fdd6..16cf8f43f9 100644
--- a/lib/stdlib/test/gen_statem_SUITE.erl
+++ b/lib/stdlib/test/gen_statem_SUITE.erl
@@ -513,7 +513,9 @@ abnormal1dirty(Config) ->
%% trap exit since we must link to get the real bad_return_ error
abnormal2(Config) ->
OldFl = process_flag(trap_exit, true),
- {ok,Pid} = gen_statem:start_link(?MODULE, start_arg(Config, []), []),
+ {ok,Pid} =
+ gen_statem:start_link(
+ ?MODULE, start_arg(Config, []), [{debug,[log]}]),
%% bad return value in the gen_statem loop
{{{bad_return_from_state_function,badreturn},_},_} =
@@ -531,7 +533,9 @@ abnormal2(Config) ->
%% trap exit since we must link to get the real bad_return_ error
abnormal3(Config) ->
OldFl = process_flag(trap_exit, true),
- {ok,Pid} = gen_statem:start_link(?MODULE, start_arg(Config, []), []),
+ {ok,Pid} =
+ gen_statem:start_link(
+ ?MODULE, start_arg(Config, []), [{debug,[log]}]),
%% bad return value in the gen_statem loop
{{{bad_action_from_state_function,badaction},_},_} =
@@ -549,7 +553,9 @@ abnormal3(Config) ->
%% trap exit since we must link to get the real bad_return_ error
abnormal4(Config) ->
OldFl = process_flag(trap_exit, true),
- {ok,Pid} = gen_statem:start_link(?MODULE, start_arg(Config, []), []),
+ {ok,Pid} =
+ gen_statem:start_link(
+ ?MODULE, start_arg(Config, []), [{debug,[log]}]),
%% bad return value in the gen_statem loop
BadTimeout = {badtimeout,4711,ouch},
@@ -689,7 +695,10 @@ state_enter(_Config) ->
end},
{ok,STM} =
gen_statem:start_link(
- ?MODULE, {map_statem,Machine,[state_enter]}, [{debug,[trace]}]),
+ ?MODULE, {map_statem,Machine,[state_enter]},
+ [{debug,[trace,{log,17}]}]),
+ ok = sys:log(STM, false),
+ ok = sys:log(STM, true),
[{1,enter,start,start}] = flush(),
{2,echo,start} = gen_statem:call(STM, echo),
@@ -708,6 +717,11 @@ state_enter(_Config) ->
{13,internal,start,wait}] = flush(),
{14,repeat,start} = gen_statem:call(STM, repeat),
[{15,enter,start,start}] = flush(),
+
+ {ok,Log} = sys:log(STM, get),
+ io:format("sys:log ~p~n", [Log]),
+ ok = sys:log(STM, print),
+
{16,stop} = gen_statem:call(STM, {stop,bye}),
[{'EXIT',STM,bye}] = flush(),
@@ -1470,7 +1484,8 @@ enter_loop(_Config) ->
%% Locally registered process + {local,Name}
{ok,Pid1a} =
- proc_lib:start_link(?MODULE, enter_loop, [local,local]),
+ proc_lib:start_link(
+ ?MODULE, enter_loop, [local,local,[{debug,[{log,7}]}]]),
yes = gen_statem:call(Pid1a, 'alive?'),
stopped = gen_statem:call(Pid1a, stop),
receive
@@ -1482,7 +1497,8 @@ enter_loop(_Config) ->
%% Unregistered process + {local,Name}
{ok,Pid1b} =
- proc_lib:start_link(?MODULE, enter_loop, [anon,local]),
+ proc_lib:start_link(
+ ?MODULE, enter_loop, [anon,local,[{debug,[log]}]]),
receive
{'EXIT',Pid1b,process_not_registered} ->
ok
@@ -1591,6 +1607,9 @@ enter_loop(_Config) ->
ok = verify_empty_msgq().
enter_loop(Reg1, Reg2) ->
+ enter_loop(Reg1, Reg2, []).
+%%
+enter_loop(Reg1, Reg2, Opts) ->
process_flag(trap_exit, true),
case Reg1 of
local -> register(armitage, self());
@@ -1602,15 +1621,15 @@ enter_loop(Reg1, Reg2) ->
case Reg2 of
local ->
gen_statem:enter_loop(
- ?MODULE, [], state0, [], {local,armitage});
+ ?MODULE, Opts, state0, [], {local,armitage});
global ->
gen_statem:enter_loop(
- ?MODULE, [], state0, [], {global,armitage});
+ ?MODULE, Opts, state0, [], {global,armitage});
via ->
gen_statem:enter_loop(
- ?MODULE, [], state0, [], {via, dummy_via, armitage});
+ ?MODULE, Opts, state0, [], {via, dummy_via, armitage});
anon ->
- gen_statem:enter_loop(?MODULE, [], state0, [])
+ gen_statem:enter_loop(?MODULE, Opts, state0, [])
end.
undef_code_change(_Config) ->
@@ -1642,7 +1661,9 @@ undef_terminate2(_Config) ->
undef_in_terminate(_Config) ->
Data = {undef_in_terminate, {?MODULE, terminate}},
- {ok, Statem} = gen_statem:start(?MODULE, {data, Data}, []),
+ {ok, Statem} =
+ gen_statem:start(
+ ?MODULE, {data, Data}, [{debug,[log]}]),
try
gen_statem:stop(Statem),
ct:fail(should_crash)
diff --git a/lib/stdlib/test/stdlib_bench_SUITE.erl b/lib/stdlib/test/stdlib_bench_SUITE.erl
index 436aa78a0f..3456442088 100644
--- a/lib/stdlib/test/stdlib_bench_SUITE.erl
+++ b/lib/stdlib/test/stdlib_bench_SUITE.erl
@@ -67,9 +67,9 @@ cases(gen_server) ->
[simple, simple_timer, simple_mon, simple_timer_mon,
generic, generic_timer];
cases(gen_statem) ->
- [generic, generic_fsm, generic_fsm_transit,
- generic_statem, generic_statem_transit,
- generic_statem_complex].
+ [generic, generic_log, generic_log100, generic_fsm, generic_fsm_transit,
+ generic_statem, generic_statem_log, generic_statem_log100,
+ generic_statem_transit, generic_statem_complex].
init_per_group(gen_server, Config) ->
compile_servers(Config),
@@ -294,12 +294,24 @@ simple_timer_mon(Config) when is_list(Config) ->
generic(Config) when is_list(Config) ->
comment(do_tests(generic, single_small, Config)).
+generic_log(Config) when is_list(Config) ->
+ comment(do_tests(generic_log, single_small, Config)).
+
+generic_log100(Config) when is_list(Config) ->
+ comment(do_tests(generic_log100, single_small, Config)).
+
generic_timer(Config) when is_list(Config) ->
comment(do_tests(generic_timer, single_small, Config)).
generic_statem(Config) when is_list(Config) ->
comment(do_tests(generic_statem, single_small, Config)).
+generic_statem_log(Config) when is_list(Config) ->
+ comment(do_tests(generic_statem_log, single_small, Config)).
+
+generic_statem_log100(Config) when is_list(Config) ->
+ comment(do_tests(generic_statem_log100, single_small, Config)).
+
generic_statem_transit(Config) when is_list(Config) ->
comment(do_tests(generic_statem_transit, single_small, Config)).
@@ -371,9 +383,9 @@ norm(T, Ref) ->
do_tests(Test, ParamSet, Config) ->
BenchmarkSuite = ?config(benchmark_suite, Config),
- {Client, ServerMod} = bench(Test),
+ {Client, ServerMod, ServerArg} = bench(Test),
{Parallelism, Message} = bench_params(ParamSet),
- Fun = create_clients(Message, ServerMod, Client, Parallelism),
+ Fun = create_clients(Message, ServerMod, ServerArg, Client, Parallelism),
{TotalLoops, AllPidTime} = run_test(Fun),
try ?CALLS_PER_LOOP * round((1000 * TotalLoops) / AllPidTime) of
PerSecond ->
@@ -488,27 +500,35 @@ generic_fsm_transit_client(N, M, P) ->
generic_fsm_transit_client(N+1, M, P).
bench(simple) ->
- {fun simple_client/3, simple_server};
+ {fun simple_client/3, simple_server, term};
bench(simple_timer) ->
- {fun simple_client_timer/3, simple_server_timer};
+ {fun simple_client_timer/3, simple_server_timer, term};
bench(simple_mon) ->
- {fun simple_client_mon/3, simple_server_mon};
+ {fun simple_client_mon/3, simple_server_mon, term};
bench(simple_timer_mon) ->
- {fun simple_client_timer_mon/3, simple_server_timer_mon};
+ {fun simple_client_timer_mon/3, simple_server_timer_mon, term};
bench(generic) ->
- {fun generic_client/3, generic_server};
+ {fun generic_client/3, generic_server, [term]};
+bench(generic_log) ->
+ {fun generic_client/3, generic_server, [term,{debug,[log]}]};
+bench(generic_log100) ->
+ {fun generic_client/3, generic_server, [term,{debug,[{log,100}]}]};
bench(generic_timer) ->
- {fun generic_timer_client/3, generic_server_timer};
+ {fun generic_timer_client/3, generic_server_timer, term};
bench(generic_statem) ->
- {fun generic_statem_client/3, generic_statem};
+ {fun generic_statem_client/3, generic_statem, [term]};
+bench(generic_statem_log) ->
+ {fun generic_statem_client/3, generic_statem, [term,{debug,[log]}]};
+bench(generic_statem_log100) ->
+ {fun generic_statem_client/3, generic_statem, [term,{debug,[{log,100}]}]};
bench(generic_statem_transit) ->
- {fun generic_statem_transit_client/3, generic_statem};
+ {fun generic_statem_transit_client/3, generic_statem, [term]};
bench(generic_statem_complex) ->
- {fun generic_statem_complex_client/3, generic_statem_complex};
+ {fun generic_statem_complex_client/3, generic_statem_complex, term};
bench(generic_fsm) ->
- {fun generic_fsm_client/3, generic_fsm};
+ {fun generic_fsm_client/3, generic_fsm, term};
bench(generic_fsm_transit) ->
- {fun generic_fsm_transit_client/3, generic_fsm}.
+ {fun generic_fsm_transit_client/3, generic_fsm, term}.
%% -> {Parallelism, MessageTerm}
bench_params(single_small) -> {1, small()};
@@ -536,10 +556,9 @@ parallelism() ->
_ -> 1
end.
-create_clients(M, ServerMod, Client, Parallel) ->
+create_clients(M, ServerMod, ServerArg, Client, Parallel) ->
fun() ->
- State = term,
- ServerPid = ServerMod:start(State),
+ ServerPid = ServerMod:start(ServerArg),
PidRefs = [spawn_monitor(fun() -> Client(0, M, ServerPid) end) ||
_ <- lists:seq(1, Parallel)],
timer:sleep(?MAX_TIME),
diff --git a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl
index abd61dcdef..3707d00dee 100644
--- a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl
+++ b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_server.erl
@@ -8,8 +8,8 @@
-define(GEN_SERVER, gen_server).
-start(State) ->
- {ok, Pid} = ?GEN_SERVER:start(?MODULE, State, []),
+start([State|Opts]) ->
+ {ok, Pid} = ?GEN_SERVER:start(?MODULE, State, Opts),
Pid.
init(State) ->
diff --git a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl
index 2e0491f060..cfeb974abd 100644
--- a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl
+++ b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem.erl
@@ -28,8 +28,8 @@
%% API
-start(Data) ->
- {ok, Pid} = gen_statem:start(?MODULE, Data, []),
+start([Data|Opts]) ->
+ {ok, Pid} = gen_statem:start(?MODULE, Data, Opts),
Pid.
stop(P) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 12:57:33 +0000