From 412080c9e1f53785ef9f158deb91851561018c9d Mon Sep 17 00:00:00 2001
From: Raimo Niskanen <raimo@erlang.org>
Date: Fri, 8 Dec 2017 09:42:36 +0100
Subject: Optimize plain call response time
---
lib/stdlib/doc/src/gen_statem.xml | 54 +-
lib/stdlib/src/gen_statem.erl | 1573 +++++++++++++++++++++----------------
2 files changed, 923 insertions(+), 704 deletions(-)
(limited to 'lib')
diff --git a/lib/stdlib/doc/src/gen_statem.xml b/lib/stdlib/doc/src/gen_statem.xml
index a7caa71dcb..574f488e91 100644
--- a/lib/stdlib/doc/src/gen_statem.xml
+++ b/lib/stdlib/doc/src/gen_statem.xml
@@ -543,7 +543,23 @@ handle_event(_, _, State, Data) ->
<name name="event_type"/>
<desc>
<p>
- External events are of three types:
+ There are 3 categories of events:
+ <seealso marker="#type-external_event_type">external</seealso>,
+ <seealso marker="#type-timeout_event_type">timeout</seealso>,
+ and <c>internal</c>.
+ </p>
+ <p>
+ <c>internal</c> events can only be generated by the
+ state machine itself through the state transition action
+ <seealso marker="#type-action"><c>next_event</c></seealso>.
+ </p>
+ </desc>
+ </datatype>
+ <datatype>
+ <name name="external_event_type"/>
+ <desc>
+ <p>
+ External events are of 3 types:
<c>{call,<anno>From</anno>}</c>, <c>cast</c>, or <c>info</c>.
<seealso marker="#call/2">Calls</seealso>
(synchronous) and
@@ -551,12 +567,17 @@ handle_event(_, _, State, Data) ->
originate from the corresponding API functions.
For calls, the event contains whom to reply to.
Type <c>info</c> originates from regular process messages sent
- to the <c>gen_statem</c>. The state machine
- implementation can, in addition to the above,
- generate
- <seealso marker="#type-event_type"><c>events of types</c></seealso>
- <c>timeout</c>, <c>{timeout,<anno>Name</anno>}</c>,
- <c>state_timeout</c>, and <c>internal</c> to itself.
+ to the <c>gen_statem</c>.
+ </p>
+ </desc>
+ </datatype>
+ <datatype>
+ <name name="timeout_event_type"/>
+ <desc>
+ <p>
+ There are 3 types of timeout events that the state machine
+ can generate for itself with the corresponding
+ <seealso marker="#type-timeout_action">timeout_action()</seealso>s.
</p>
</desc>
</datatype>
@@ -1026,6 +1047,25 @@ handle_event(_, _, State, Data) ->
for this state transition.
</p>
</item>
+ </taglist>
+ </desc>
+ </datatype>
+ <datatype>
+ <name name="timeout_action"/>
+ <desc>
+ <p>
+ These state transition actions can be invoked by
+ returning them from the
+ <seealso marker="#state callback">state callback</seealso>, from
+ <seealso marker="#Module:init/1"><c>Module:init/1</c></seealso>
+ or by giving them to
+ <seealso marker="#enter_loop/5"><c>enter_loop/5,6</c></seealso>.
+ </p>
+ <p>
+ These timeout actions sets timeout
+ <seealso marker="#type-transition_option">transition options</seealso>.
+ </p>
+ <taglist>
<tag><c>Timeout</c></tag>
<item>
<p>
diff --git a/lib/stdlib/src/gen_statem.erl b/lib/stdlib/src/gen_statem.erl
index 1110d18af6..b1d99e2e14 100644
--- a/lib/stdlib/src/gen_statem.erl
+++ b/lib/stdlib/src/gen_statem.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2016-2017. All Rights Reserved.
+%% Copyright Ericsson AB 2016-2018. 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.
@@ -78,9 +78,11 @@
-type data() :: term().
-type event_type() ::
- {'call',From :: from()} | 'cast' | 'info' |
- 'timeout' | {'timeout', Name :: term()} | 'state_timeout' |
- 'internal'.
+ external_event_type() | timeout_event_type() | 'internal'.
+-type external_event_type() ::
+ {'call',From :: from()} | 'cast' | 'info'.
+-type timeout_event_type() ::
+ 'timeout' | {'timeout', Name :: term()} | 'state_timeout'.
-type callback_mode_result() ::
callback_mode() | [callback_mode() | state_enter()].
@@ -138,7 +140,9 @@
-type enter_action() ::
'hibernate' | % Set the hibernate option
{'hibernate', Hibernate :: hibernate()} |
- %%
+ timeout_action() |
+ reply_action().
+-type timeout_action() ::
(Timeout :: event_timeout()) | % {timeout,Timeout}
{'timeout', % Set the event_timeout option
Time :: event_timeout(), EventContent :: term()} |
@@ -159,9 +163,7 @@
{'state_timeout', % Set the state_timeout option
Time :: state_timeout(),
EventContent :: term(),
- Options :: (timeout_option() | [timeout_option()])} |
- %%
- reply_action().
+ Options :: (timeout_option() | [timeout_option()])}.
-type reply_action() ::
{'reply', % Reply to a caller
From :: from(), Reply :: term()}.
@@ -320,7 +322,13 @@
handle_event/4 % For callback_mode() =:= handle_event_function
]).
+
+
%% Type validation functions
+-compile(
+ {inline,
+ [callback_mode/1, state_enter/1, from/1, event_type/1]}).
+%%
callback_mode(CallbackMode) ->
case CallbackMode of
state_functions -> true;
@@ -328,6 +336,14 @@ callback_mode(CallbackMode) ->
_ -> false
end.
%%
+state_enter(StateEnter) ->
+ case StateEnter of
+ state_enter ->
+ true;
+ _ ->
+ false
+ end.
+%%
from({Pid,_}) when is_pid(Pid) -> true;
from(_) -> false.
%%
@@ -351,6 +367,48 @@ event_type(Type) ->
STACKTRACE(),
try throw(ok) catch _ -> erlang:get_stacktrace() end).
+-define(not_sys_debug, []).
+%%
+%% This is a macro to only evaluate arguments if Debug =/= [].
+%% Debug is evaluated multiple times.
+-define(
+ sys_debug(Debug, NameState, Entry),
+ case begin Debug end of
+ ?not_sys_debug ->
+ begin Debug end;
+ _ ->
+ sys_debug(begin Debug end, begin NameState end, begin Entry end)
+ end).
+
+-record(state,
+ {callback_mode = undefined :: callback_mode() | undefined,
+ state_enter = false :: boolean(),
+ module :: atom(),
+ name :: atom(),
+ state :: term(),
+ data :: term(),
+ postponed = [] :: [{event_type(),term()}],
+ %%
+ timer_refs = #{} :: % timer ref => the timer's event type
+ #{reference() => timeout_event_type()},
+ timer_types = #{} :: % timer's event type => timer ref
+ #{timeout_event_type() => reference()},
+ cancel_timers = 0 :: non_neg_integer(),
+ %% We add a timer to both timer_refs and timer_types
+ %% when we start it. When we request an asynchronous
+ %% timer cancel we remove it from timer_types. When
+ %% the timer cancel message arrives we remove it from
+ %% timer_refs.
+ %%
+ hibernate = false :: boolean(),
+ hibernate_after = infinity :: timeout()}).
+
+-record(trans_opts,
+ {hibernate = false,
+ postpone = false,
+ timeouts_r = [],
+ next_events_r = []}).
+
%%%==========================================================================
%%% API
@@ -422,6 +480,10 @@ stop(ServerRef, Reason, Timeout) ->
%% Send an event to a state machine that arrives with type 'event'
-spec cast(ServerRef :: server_ref(), Msg :: term()) -> ok.
+cast(ServerRef, Msg) when is_pid(ServerRef) ->
+ send(ServerRef, wrap_cast(Msg));
+cast(ServerRef, Msg) when is_atom(ServerRef) ->
+ send(ServerRef, wrap_cast(Msg));
cast({global,Name}, Msg) ->
try global:send(Name, wrap_cast(Msg)) of
_ -> ok
@@ -435,10 +497,6 @@ cast({via,RegMod,Name}, Msg) ->
_:_ -> ok
end;
cast({Name,Node} = ServerRef, Msg) when is_atom(Name), is_atom(Node) ->
- send(ServerRef, wrap_cast(Msg));
-cast(ServerRef, Msg) when is_atom(ServerRef) ->
- send(ServerRef, wrap_cast(Msg));
-cast(ServerRef, Msg) when is_pid(ServerRef) ->
send(ServerRef, wrap_cast(Msg)).
%% Call a state machine (synchronous; a reply is expected) that
@@ -455,75 +513,18 @@ call(ServerRef, Request) ->
{'clean_timeout',T :: timeout()} |
{'dirty_timeout',T :: timeout()}) ->
Reply :: term().
+call(ServerRef, Request, infinity = T = Timeout) ->
+ call_dirty(ServerRef, Request, Timeout, T);
+call(ServerRef, Request, {dirty_timeout, T} = Timeout) ->
+ call_dirty(ServerRef, Request, Timeout, T);
+call(ServerRef, Request, {clean_timeout, infinity = T} = Timeout) ->
+ call_dirty(ServerRef, Request, Timeout, T);
+call(ServerRef, Request, {clean_timeout, T} = Timeout) ->
+ call_clean(ServerRef, Request, Timeout, T);
+call(ServerRef, Request, {_, _} = Timeout) ->
+ erlang:error(badarg, [ServerRef,Request,Timeout]);
call(ServerRef, Request, Timeout) ->
- case parse_timeout(Timeout) of
- {dirty_timeout,T} ->
- try gen:call(ServerRef, '$gen_call', Request, T) of
- {ok,Reply} ->
- Reply
- catch
- Class:Reason ->
- erlang:raise(
- Class,
- {Reason,{?MODULE,call,[ServerRef,Request,Timeout]}},
- erlang:get_stacktrace())
- end;
- {clean_timeout,T} ->
- %% Call server through proxy process to dodge any late reply
- Ref = make_ref(),
- Self = self(),
- Pid = spawn(
- fun () ->
- Self !
- try gen:call(
- ServerRef, '$gen_call', Request, T) of
- Result ->
- {Ref,Result}
- catch Class:Reason ->
- {Ref,Class,Reason,
- erlang:get_stacktrace()}
- end
- end),
- Mref = monitor(process, Pid),
- receive
- {Ref,Result} ->
- demonitor(Mref, [flush]),
- case Result of
- {ok,Reply} ->
- Reply
- end;
- {Ref,Class,Reason,Stacktrace} ->
- demonitor(Mref, [flush]),
- erlang:raise(
- Class,
- {Reason,{?MODULE,call,[ServerRef,Request,Timeout]}},
- Stacktrace);
- {'DOWN',Mref,_,_,Reason} ->
- %% There is a theoretical possibility that the
- %% proxy process gets killed between try--of and !
- %% so this clause is in case of that
- exit(Reason)
- end;
- Error when is_atom(Error) ->
- erlang:error(Error, [ServerRef,Request,Timeout])
- end.
-
-parse_timeout(Timeout) ->
- case Timeout of
- {clean_timeout,infinity} ->
- {dirty_timeout,infinity};
- {clean_timeout,_} ->
- Timeout;
- {dirty_timeout,_} ->
- Timeout;
- {_,_} ->
- %% Be nice and throw a badarg for speling errors
- badarg;
- infinity ->
- {dirty_timeout,infinity};
- T ->
- {clean_timeout,T}
- end.
+ call_clean(ServerRef, Request, Timeout, Timeout).
%% Reply from a state machine callback to whom awaits in call/2
-spec reply([reply_action()] | reply_action()) -> ok.
@@ -532,6 +533,7 @@ reply({reply,From,Reply}) ->
reply(Replies) when is_list(Replies) ->
replies(Replies).
%%
+-compile({inline, [reply/2]}).
-spec reply(From :: from(), Reply :: term()) -> ok.
reply({To,Tag}, Reply) when is_pid(To) ->
Msg = {Tag,Reply},
@@ -581,9 +583,59 @@ enter_loop(Module, Opts, State, Data, Server, Actions) ->
%%---------------------------------------------------------------------------
%% API helpers
+-compile({inline, [wrap_cast/1]}).
wrap_cast(Event) ->
{'$gen_cast',Event}.
+call_dirty(ServerRef, Request, Timeout, T) ->
+ try gen:call(ServerRef, '$gen_call', Request, T) of
+ {ok,Reply} ->
+ Reply
+ catch
+ Class:Reason ->
+ erlang:raise(
+ Class,
+ {Reason,{?MODULE,call,[ServerRef,Request,Timeout]}},
+ erlang:get_stacktrace())
+ end.
+
+call_clean(ServerRef, Request, Timeout, T) ->
+ %% Call server through proxy process to dodge any late reply
+ Ref = make_ref(),
+ Self = self(),
+ Pid = spawn(
+ fun () ->
+ Self !
+ try gen:call(
+ ServerRef, '$gen_call', Request, T) of
+ Result ->
+ {Ref,Result}
+ catch Class:Reason ->
+ {Ref,Class,Reason,
+ erlang:get_stacktrace()}
+ end
+ end),
+ Mref = monitor(process, Pid),
+ receive
+ {Ref,Result} ->
+ demonitor(Mref, [flush]),
+ case Result of
+ {ok,Reply} ->
+ Reply
+ end;
+ {Ref,Class,Reason,Stacktrace} ->
+ demonitor(Mref, [flush]),
+ erlang:raise(
+ Class,
+ {Reason,{?MODULE,call,[ServerRef,Request,Timeout]}},
+ Stacktrace);
+ {'DOWN',Mref,_,_,Reason} ->
+ %% There is a theoretical possibility that the
+ %% proxy process gets killed between try--of and !
+ %% so this clause is in case of that
+ exit(Reason)
+ end.
+
replies([{reply,From,Reply}|Replies]) ->
reply(From, Reply),
replies(Replies);
@@ -608,60 +660,28 @@ enter(Module, Opts, State, Data, Server, Actions, Parent) ->
%% 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 = [],
- P = [],
+ HibernateAfterTimeout = gen:hibernate_after(Opts),
+ Events = [],
Event = {internal,init_state},
%% We enforce {postpone,false} to ensure that
%% our fake Event gets discarded, thought it might get logged
- NewActions =
- if
- is_list(Actions) ->
- Actions ++ [{postpone,false}];
- true ->
- [Actions,{postpone,false}]
- end,
- TimerRefs = #{},
- %% Key: timer ref
- %% Value: the timer type i.e the timer's event type
- %%
- TimerTypes = #{},
- %% Key: timer type i.e the timer's event type
- %% Value: timer ref
- %%
- %% We add a timer to both timer_refs and timer_types
- %% when we start it. When we request an asynchronous
- %% timer cancel we remove it from timer_types. When
- %% the timer cancel message arrives we remove it from
- %% timer_refs.
- %%
- Hibernate = false,
- CancelTimers = 0,
- S = #{
- callback_mode => undefined,
- state_enter => false,
- module => Module,
- name => Name,
- state => State,
- data => Data,
- postponed => P,
- %%
- %% The following fields are finally set from to the arguments to
- %% loop_event_actions/9 when it finally loops back to loop/3
- %% in loop_event_result/11
- timer_refs => TimerRefs,
- timer_types => TimerTypes,
- hibernate => Hibernate,
- hibernate_after => HibernateAfterTimeout,
- cancel_timers => CancelTimers
- },
- NewDebug = sys_debug(Debug, S, State, {enter,Event,State}),
+ NewActions = listify(Actions) ++ [{postpone,false}],
+ S =
+ #state{
+ module = Module,
+ name = Name,
+ state = State,
+ data = Data,
+ hibernate_after = HibernateAfterTimeout},
+ CallEnter = true,
+ NewDebug = ?sys_debug(Debug, {Name,State}, {enter,Event,State}),
case call_callback_mode(S) of
- {ok,NewS} ->
+ #state{} = NewS ->
loop_event_actions(
Parent, NewDebug, NewS,
- Events, Event, State, Data, NewActions, true);
- {Class,Reason,Stacktrace} ->
+ Events, Event, State, Data, #trans_opts{},
+ NewActions, CallEnter);
+ [Class,Reason,Stacktrace] ->
terminate(
Class, Reason, Stacktrace, NewDebug,
S, [Event|Events])
@@ -686,10 +706,8 @@ init_it(Starter, Parent, ServerRef, Module, Args, Opts) ->
proc_lib:init_ack(Starter, {error,Reason}),
error_info(
Class, Reason, Stacktrace,
- #{name => Name,
- callback_mode => undefined,
- state_enter => false},
- [], [], undefined),
+ #state{name = Name},
+ [], undefined),
erlang:raise(Class, Reason, Stacktrace)
end.
@@ -719,10 +737,8 @@ init_result(Starter, Parent, ServerRef, Module, Result, Opts) ->
proc_lib:init_ack(Starter, {error,Error}),
error_info(
error, Error, ?STACKTRACE(),
- #{name => Name,
- callback_mode => undefined,
- state_enter => false},
- [], [], undefined),
+ #state{name = Name},
+ [], undefined),
exit(Error)
end.
@@ -736,9 +752,10 @@ system_terminate(Reason, _Parent, Debug, S) ->
terminate(exit, Reason, ?STACKTRACE(), Debug, S, []).
system_code_change(
- #{module := Module,
- state := State,
- data := Data} = S,
+ #state{
+ module = Module,
+ state = State,
+ data = Data} = S,
_Mod, OldVsn, Extra) ->
case
try Module:code_change(OldVsn, State, Data, Extra)
@@ -748,29 +765,31 @@ system_code_change(
of
{ok,NewState,NewData} ->
{ok,
- S#{callback_mode := undefined,
- state := NewState,
- data := NewData}};
+ S#state{
+ callback_mode = undefined,
+ state = NewState,
+ data = NewData}};
{ok,_} = Error ->
error({case_clause,Error});
Error ->
Error
end.
-system_get_state(#{state := State, data := Data}) ->
+system_get_state(#state{state = State, data = Data}) ->
{ok,{State,Data}}.
system_replace_state(
StateFun,
- #{state := State,
- data := Data} = S) ->
+ #state{
+ state = State,
+ data = Data} = S) ->
{NewState,NewData} = Result = StateFun({State,Data}),
- {ok,Result,S#{state := NewState, data := NewData}}.
+ {ok,Result,S#state{state = NewState, data = NewData}}.
format_status(
Opt,
[PDict,SysState,Parent,Debug,
- #{name := Name, postponed := P} = S]) ->
+ #state{name = Name, postponed = P} = S]) ->
Header = gen:format_status_header("Status for state machine", Name),
Log = sys:get_debug(log, Debug, []),
[{header,Header},
@@ -789,6 +808,9 @@ format_status(
%% them, not as the real erlang messages. Use trace for that.
%%---------------------------------------------------------------------------
+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",
@@ -821,15 +843,6 @@ event_string(Event) ->
io_lib:format("~tw ~tp", [EventType,EventContent])
end.
-sys_debug(Debug, #{name := Name}, State, Entry) ->
- case Debug of
- [] ->
- Debug;
- _ ->
- sys:handle_debug(
- Debug, fun print_event/3, {Name,State}, Entry)
- end.
-
%%%==========================================================================
%%% Internal callbacks
@@ -844,14 +857,16 @@ wakeup_from_hibernate(Parent, Debug, S) ->
%% and detours through sys:handle_system_message/7 and proc_lib:hibernate/3
%% Entry point for system_continue/3
-loop(Parent, Debug, #{hibernate := true, cancel_timers := 0} = S) ->
+loop(Parent, Debug, #state{hibernate = true, cancel_timers = 0} = S) ->
loop_hibernate(Parent, Debug, S);
loop(Parent, Debug, S) ->
loop_receive(Parent, Debug, S).
loop_hibernate(Parent, Debug, S) ->
+ %%
%% Does not return but restarts process at
%% wakeup_from_hibernate/3 that jumps to loop_receive/3
+ %%
proc_lib:hibernate(
?MODULE, wakeup_from_hibernate, [Parent,Debug,S]),
error(
@@ -859,17 +874,18 @@ loop_hibernate(Parent, Debug, S) ->
{wakeup_from_hibernate,3}}).
%% Entry point for wakeup_from_hibernate/3
-loop_receive(Parent, Debug, #{hibernate_after := HibernateAfterTimeout} = S) ->
+loop_receive(
+ Parent, Debug, #state{hibernate_after = HibernateAfterTimeout} = S) ->
+ %%
receive
Msg ->
case Msg of
{system,Pid,Req} ->
- #{hibernate := Hibernate} = S,
%% Does not return but tail recursively calls
%% system_continue/3 that jumps to loop/3
sys:handle_system_msg(
Req, Pid, Parent, ?MODULE, Debug, S,
- Hibernate);
+ S#state.hibernate);
{'EXIT',Parent,Reason} = EXIT ->
%% EXIT is not a 2-tuple therefore
%% not an event but this will stand out
@@ -877,9 +893,9 @@ loop_receive(Parent, Debug, #{hibernate_after := HibernateAfterTimeout} = S) ->
Q = [EXIT],
terminate(exit, Reason, ?STACKTRACE(), Debug, S, Q);
{timeout,TimerRef,TimerMsg} ->
- #{timer_refs := TimerRefs,
- timer_types := TimerTypes,
- hibernate := Hibernate} = S,
+ #state{
+ timer_refs = TimerRefs,
+ timer_types = TimerTypes} = S,
case TimerRefs of
#{TimerRef := TimerType} ->
%% We know of this timer; is it a running
@@ -889,7 +905,6 @@ loop_receive(Parent, Debug, #{hibernate_after := HibernateAfterTimeout} = S) ->
#{TimerType := TimerRef} ->
%% The timer type maps back to this
%% timer ref, so it was a running timer
- Event = {TimerType,TimerMsg},
%% Unregister the triggered timeout
NewTimerRefs =
maps:remove(TimerRef, TimerRefs),
@@ -897,11 +912,10 @@ loop_receive(Parent, Debug, #{hibernate_after := HibernateAfterTimeout} = S) ->
maps:remove(TimerType, TimerTypes),
loop_receive_result(
Parent, Debug,
- S#{
- timer_refs := NewTimerRefs,
- timer_types := NewTimerTypes},
- Hibernate,
- Event);
+ S#state{
+ timer_refs = NewTimerRefs,
+ timer_types = NewTimerTypes},
+ TimerType, TimerMsg);
_ ->
%% This was a late timeout message
%% from timer being cancelled, so
@@ -911,14 +925,13 @@ loop_receive(Parent, Debug, #{hibernate_after := HibernateAfterTimeout} = S) ->
end;
_ ->
%% Not our timer; present it as an event
- Event = {info,Msg},
- loop_receive_result(
- Parent, Debug, S, Hibernate, Event)
+ loop_receive_result(Parent, Debug, S, info, Msg)
end;
{cancel_timer,TimerRef,_} ->
- #{timer_refs := TimerRefs,
- cancel_timers := CancelTimers,
- hibernate := Hibernate} = S,
+ #state{
+ timer_refs = TimerRefs,
+ cancel_timers = CancelTimers,
+ hibernate = Hibernate} = S,
case TimerRefs of
#{TimerRef := _} ->
%% We must have requested a cancel
@@ -928,9 +941,9 @@ loop_receive(Parent, Debug, #{hibernate_after := HibernateAfterTimeout} = S) ->
maps:remove(TimerRef, TimerRefs),
NewCancelTimers = CancelTimers - 1,
NewS =
- S#{
- timer_refs := NewTimerRefs,
- cancel_timers := NewCancelTimers},
+ S#state{
+ timer_refs = NewTimerRefs,
+ cancel_timers = NewCancelTimers},
if
Hibernate =:= true, NewCancelTimers =:= 0 ->
%% No more cancel_timer msgs to expect;
@@ -942,238 +955,631 @@ loop_receive(Parent, Debug, #{hibernate_after := HibernateAfterTimeout} = S) ->
_ ->
%% Not our cancel_timer msg;
%% present it as an event
- Event = {info,Msg},
- loop_receive_result(
- Parent, Debug, S, Hibernate, Event)
+ loop_receive_result(Parent, Debug, S, info, Msg)
end;
_ ->
%% External msg
- #{hibernate := Hibernate} = S,
- Event =
- case Msg of
- {'$gen_call',From,Request} ->
- {{call,From},Request};
- {'$gen_cast',E} ->
- {cast,E};
- _ ->
- {info,Msg}
- end,
- loop_receive_result(
- Parent, Debug, S, Hibernate, Event)
+ case Msg of
+ {'$gen_call',From,Request} ->
+ loop_receive_result(
+ Parent, Debug, S, {call,From}, Request);
+ {'$gen_cast',Cast} ->
+ loop_receive_result(Parent, Debug, S, cast, Cast);
+ _ ->
+ loop_receive_result(Parent, Debug, S, info, Msg)
+ end
end
after
HibernateAfterTimeout ->
loop_hibernate(Parent, Debug, S)
end.
+loop_receive_result(Parent, ?not_sys_debug, S, Type, Content) ->
+ %% Here is the queue of not yet handled events created
+ Events = [],
+ loop_event(Parent, ?not_sys_debug, S, Events, Type, Content);
loop_receive_result(
- Parent, Debug,
- #{state := State,
- timer_types := TimerTypes, cancel_timers := CancelTimers} = S,
- Hibernate, Event) ->
- %% From now the 'hibernate' field in S is invalid
- %% and will be restored when looping back
- %% in loop_event_result/11
- NewDebug = sys_debug(Debug, S, State, {in,Event}),
+ Parent, Debug, #state{name = Name, state = State} = S, Type, Content) ->
+ NewDebug = sys_debug(Debug, {Name,State}, {in,{Type,Content}}),
%% Here is the queue of not yet handled events created
Events = [],
- %% Cancel any running event timer
- case
- cancel_timer_by_type(timeout, TimerTypes, CancelTimers)
- of
- {_,CancelTimers} ->
- %% No timer cancelled
- loop_event(Parent, NewDebug, S, Events, Event, Hibernate);
- {NewTimerTypes,NewCancelTimers} ->
- %% The timer is removed from NewTimerTypes but
- %% remains in TimerRefs until we get
- %% the cancel_timer msg
- NewS =
- S#{
- timer_types := NewTimerTypes,
- cancel_timers := NewCancelTimers},
- loop_event(Parent, NewDebug, NewS, Events, Event, Hibernate)
- end.
+ loop_event(Parent, NewDebug, S, Events, Type, Content).
%% Entry point for handling an event, received or enqueued
loop_event(
+ Parent, Debug, #state{hibernate = Hibernate} = S,
+ Events, Type, Content) ->
+ %%
+ case Hibernate of
+ true ->
+ %%
+ %% If (this old) Hibernate is true here it can only be
+ %% because it was set from an event action
+ %% and we did not go into hibernation since there were
+ %% events in queue, so we do what the user
+ %% might rely on i.e collect garbage which
+ %% would have happened if we actually hibernated
+ %% and immediately was awakened.
+ %%
+ _ = garbage_collect(),
+ loop_event_state_function(
+ Parent, Debug, S, Events, Type, Content);
+ false ->
+ loop_event_state_function(
+ Parent, Debug, S, Events, Type, Content)
+ end.
+
+%% Call the state function
+loop_event_state_function(
Parent, Debug,
- #{state := State, data := Data} = S,
- Events, {Type,Content} = Event, Hibernate) ->
+ #state{state = State, data = Data} = S,
+ Events, Type, Content) ->
+ %%
+ %% The field 'hibernate' in S is now invalid and will be
+ %% restored when looping back to loop/3 or loop_event/6.
%%
- %% If (this old) Hibernate is true here it can only be
- %% because it was set from an event action
- %% and we did not go into hibernation since there were
- %% events in queue, so we do what the user
- %% might rely on i.e collect garbage which
- %% would have happened if we actually hibernated
- %% and immediately was awakened
- Hibernate andalso garbage_collect(),
+ Event = {Type,Content},
+ TransOpts = false,
case call_state_function(S, Type, Content, State, Data) of
- {ok,Result,NewS} ->
- {NextState,NewData,Actions,EnterCall} =
- parse_event_result(
- true, Debug, NewS,
- Events, Event, State, Data, Result),
- loop_event_actions(
- Parent, Debug, NewS,
- Events, Event, NextState, NewData, Actions, EnterCall);
- {Class,Reason,Stacktrace} ->
+ {Result, NewS} ->
+ loop_event_result(
+ Parent, Debug, NewS,
+ Events, Event, State, Data, TransOpts, Result);
+ [Class,Reason,Stacktrace] ->
terminate(
- Class, Reason, Stacktrace, Debug, S,
- [Event|Events])
+ Class, Reason, Stacktrace, Debug, S, [Event|Events])
end.
-loop_event_actions(
- Parent, Debug,
- #{state := State, state_enter := StateEnter} = S,
- Events, Event, NextState, NewData,
- Actions, EnterCall) ->
- %% Hibernate is reborn here as false being
- %% the default value from parse_actions/4
- case parse_actions(Debug, S, State, Actions) of
- {ok,NewDebug,Hibernate,TimeoutsR,Postpone,NextEventsR} ->
- if
- StateEnter, EnterCall ->
- loop_event_enter(
- Parent, NewDebug, S,
- Events, Event, NextState, NewData,
- Hibernate, TimeoutsR, Postpone, NextEventsR);
- true ->
- loop_event_result(
- Parent, NewDebug, S,
- Events, Event, NextState, NewData,
- Hibernate, TimeoutsR, Postpone, NextEventsR)
- end;
- {Class,Reason,Stacktrace} ->
+%% Make a state enter call to the state function
+loop_event_state_enter(
+ Parent, Debug, #state{state = PrevState} = S,
+ Events, Event, NextState, NewData, TransOpts) ->
+ %%
+ case call_state_function(S, enter, PrevState, NextState, NewData) of
+ {Result, NewS} ->
+ loop_event_result(
+ Parent, Debug, NewS,
+ Events, Event, NextState, NewData, TransOpts, Result);
+ [Class,Reason,Stacktrace] ->
terminate(
- Class, Reason, Stacktrace, Debug, S,
- [Event|Events])
+ Class, Reason, Stacktrace, Debug, S, [Event|Events])
end.
-loop_event_enter(
- Parent, Debug, #{state := State} = S,
- Events, Event, NextState, NewData,
- Hibernate, TimeoutsR, Postpone, NextEventsR) ->
- case call_state_function(S, enter, State, NextState, NewData) of
- {ok,Result,NewS} ->
- case parse_event_result(
- false, Debug, NewS,
- Events, Event, NextState, NewData, Result) of
- {_,NewerData,Actions,EnterCall} ->
- loop_event_enter_actions(
- Parent, Debug, NewS,
- Events, Event, NextState, NewerData,
- Hibernate, TimeoutsR, Postpone, NextEventsR,
- Actions, EnterCall)
- end;
- {Class,Reason,Stacktrace} ->
- terminate(
- Class, Reason, Stacktrace, Debug,
- S#{
- state := NextState,
- data := NewData,
- hibernate := Hibernate},
- [Event|Events])
+%% Process the result from the state function.
+%% When TransOpts =:= false it was a state function call,
+%% otherwise it is an option tuple and it was a state enter call.
+%%
+loop_event_result(
+ Parent, Debug, S,
+ Events, Event, State, Data, TransOpts, Result) ->
+ %%
+ case Result of
+ {next_state,State,NewData} ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, NewData, TransOpts,
+ [], false);
+ {next_state,NextState,NewData}
+ when TransOpts =:= false ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, NextState, NewData, TransOpts,
+ [], true);
+ {next_state,State,NewData,Actions} ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, NewData, TransOpts,
+ Actions, false);
+ {next_state,NextState,NewData,Actions}
+ when TransOpts =:= false ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, NextState, NewData, TransOpts,
+ Actions, true);
+ %%
+ {keep_state,NewData} ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, NewData, TransOpts,
+ [], false);
+ {keep_state,NewData,Actions} ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, NewData, TransOpts,
+ Actions, false);
+ %%
+ keep_state_and_data ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, Data, TransOpts,
+ [], false);
+ {keep_state_and_data,Actions} ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, Data, TransOpts,
+ Actions, false);
+ %%
+ {repeat_state,NewData} ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, NewData, TransOpts,
+ [], true);
+ {repeat_state,NewData,Actions} ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, NewData, TransOpts,
+ Actions, true);
+ %%
+ repeat_state_and_data ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, Data, TransOpts,
+ [], true);
+ {repeat_state_and_data,Actions} ->
+ loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, State, Data, TransOpts,
+ Actions, true);
+ %%
+ stop ->
+ terminate(
+ exit, normal, ?STACKTRACE(), Debug,
+ S#state{
+ state = State, data = Data,
+ hibernate = hibernate_in_trans_opts(TransOpts)},
+ [Event|Events]);
+ {stop,Reason} ->
+ terminate(
+ exit, Reason, ?STACKTRACE(), Debug,
+ S#state{
+ state = State, data = Data,
+ hibernate = hibernate_in_trans_opts(TransOpts)},
+ [Event|Events]);
+ {stop,Reason,NewData} ->
+ terminate(
+ exit, Reason, ?STACKTRACE(), Debug,
+ S#state{
+ state = State, data = NewData,
+ hibernate = hibernate_in_trans_opts(TransOpts)},
+ [Event|Events]);
+ %%
+ {stop_and_reply,Reason,Replies} ->
+ reply_then_terminate(
+ exit, Reason, ?STACKTRACE(), Debug,
+ S#state{
+ state = State, data = Data,
+ hibernate = hibernate_in_trans_opts(TransOpts)},
+ [Event|Events], Replies);
+ {stop_and_reply,Reason,Replies,NewData} ->
+ reply_then_terminate(
+ exit, Reason, ?STACKTRACE(), Debug,
+ S#state{
+ state = State, data = NewData,
+ hibernate = hibernate_in_trans_opts(TransOpts)},
+ [Event|Events], Replies);
+ %%
+ _ ->
+ terminate(
+ error,
+ {bad_return_from_state_function,Result},
+ ?STACKTRACE(), Debug,
+ S#state{
+ state = State, data = Data,
+ hibernate = hibernate_in_trans_opts(TransOpts)},
+ [Event|Events])
end.
-loop_event_enter_actions(
- Parent, Debug, #{state_enter := StateEnter} = S,
- Events, Event, NextState, NewData,
- Hibernate, TimeoutsR, Postpone, NextEventsR,
- Actions, EnterCall) ->
- case
- parse_enter_actions(
- Debug, S, NextState, Actions, Hibernate, TimeoutsR)
- of
- {ok,NewDebug,NewHibernate,NewTimeoutsR,_,_} ->
- if
- StateEnter, EnterCall ->
- loop_event_enter(
- Parent, NewDebug, S,
- Events, Event, NextState, NewData,
- NewHibernate, NewTimeoutsR, Postpone, NextEventsR);
- true ->
- loop_event_result(
- Parent, NewDebug, S,
- Events, Event, NextState, NewData,
- NewHibernate, NewTimeoutsR, Postpone, NextEventsR)
- end;
- {Class,Reason,Stacktrace} ->
- terminate(
- Class, Reason, Stacktrace, Debug,
- S#{
- state := NextState,
- data := NewData,
- hibernate := Hibernate},
- [Event|Events])
+-compile({inline, [hibernate_in_trans_opts/1]}).
+hibernate_in_trans_opts(false) ->
+ (#trans_opts{})#trans_opts.hibernate;
+hibernate_in_trans_opts(#trans_opts{hibernate = Hibernate}) ->
+ Hibernate.
+
+%% Ensure that Actions are a list
+loop_event_actions(
+ Parent, Debug, S,
+ Events, Event, NextState, NewerData, TransOpts,
+ Actions, CallEnter) ->
+ loop_event_actions_list(
+ Parent, Debug, S,
+ Events, Event, NextState, NewerData, TransOpts,
+ listify(Actions), CallEnter).
+
+%% Process actions from the state function
+loop_event_actions_list(
+ Parent, Debug, #state{state_enter = StateEnter} = S,
+ Events, Event, NextState, NewerData, TransOpts,
+ Actions, CallEnter) ->
+ %%
+ case parse_actions(TransOpts, Debug, S, Actions) of
+ {NewDebug,NewTransOpts}
+ when StateEnter, CallEnter ->
+ loop_event_state_enter(
+ Parent, NewDebug, S,
+ Events, Event, NextState, NewerData, NewTransOpts);
+ {NewDebug,NewTransOpts} ->
+ loop_event_done(
+ Parent, NewDebug, S,
+ Events, Event, NextState, NewerData, NewTransOpts);
+ [Class,Reason,Stacktrace,NewDebug] ->
+ terminate(
+ Class, Reason, Stacktrace, NewDebug,
+ S#state{
+ state = NextState,
+ data = NewerData,
+ hibernate = TransOpts#trans_opts.hibernate},
+ [Event|Events])
end.
-loop_event_result(
+parse_actions(false, Debug, S, Actions) ->
+ parse_actions(true, Debug, S, Actions, #trans_opts{});
+parse_actions(TransOpts, Debug, S, Actions) ->
+ parse_actions(false, Debug, S, Actions, TransOpts).
+%%
+parse_actions(_StateCall, Debug, _S, [], TransOpts) ->
+ {Debug,TransOpts};
+parse_actions(StateCall, Debug, S, [Action|Actions], TransOpts) ->
+ case Action of
+ %% Actual actions
+ {reply,From,Reply} ->
+ parse_actions_reply(
+ StateCall, Debug, S, Actions, TransOpts, From, Reply);
+ %%
+ %% Actions that set options
+ {hibernate,NewHibernate} when is_boolean(NewHibernate) ->
+ parse_actions(
+ StateCall, Debug, S, Actions,
+ TransOpts#trans_opts{hibernate = NewHibernate});
+ hibernate ->
+ parse_actions(
+ StateCall, Debug, S, Actions,
+ TransOpts#trans_opts{hibernate = true});
+ %%
+ {postpone,NewPostpone} when not NewPostpone orelse StateCall ->
+ parse_actions(
+ StateCall, Debug, S, Actions,
+ TransOpts#trans_opts{postpone = NewPostpone});
+ postpone when StateCall ->
+ parse_actions(
+ StateCall, Debug, S, Actions,
+ TransOpts#trans_opts{postpone = true});
+ %%
+ {next_event,Type,Content} ->
+ parse_actions_next_event(
+ StateCall, Debug, S, Actions, TransOpts, Type, Content);
+ %%
+ _ ->
+ parse_actions_timeout(
+ StateCall, Debug, S, Actions, TransOpts, Action)
+ end.
+
+parse_actions_reply(
+ StateCall, ?not_sys_debug, S, Actions, TransOpts,
+ From, Reply) ->
+ %%
+ case from(From) of
+ true ->
+ reply(From, Reply),
+ parse_actions(StateCall, ?not_sys_debug, S, Actions, TransOpts);
+ false ->
+ [error,
+ {bad_action_from_state_function,{reply,From,Reply}},
+ ?STACKTRACE(),
+ ?not_sys_debug]
+ end;
+parse_actions_reply(
+ StateCall, Debug, #state{name = Name, state = State} = S,
+ Actions, TransOpts, From, Reply) ->
+ %%
+ case from(From) of
+ true ->
+ reply(From, Reply),
+ NewDebug = sys_debug(Debug, {Name,State}, {out,Reply,From}),
+ parse_actions(StateCall, NewDebug, S, Actions, TransOpts);
+ false ->
+ [error,
+ {bad_action_from_state_function,{reply,From,Reply}},
+ ?STACKTRACE(),
+ Debug]
+ end.
+
+parse_actions_next_event(
+ StateCall, ?not_sys_debug, S,
+ Actions, TransOpts, Type, Content) ->
+ case event_type(Type) of
+ true when StateCall ->
+ NextEventsR = TransOpts#trans_opts.next_events_r,
+ parse_actions(
+ StateCall, ?not_sys_debug, S, Actions,
+ TransOpts#trans_opts{
+ next_events_r = [{Type,Content}|NextEventsR]});
+ _ ->
+ [error,
+ {bad_action_from_state_function,{next_events,Type,Content}},
+ ?STACKTRACE(),
+ ?not_sys_debug]
+ end;
+parse_actions_next_event(
+ StateCall, Debug, #state{name = Name, state = State} = S,
+ Actions, TransOpts, Type, Content) ->
+ case event_type(Type) of
+ true when StateCall ->
+ NewDebug = sys_debug(Debug, {Name,State}, {in,{Type,Content}}),
+ NextEventsR = TransOpts#trans_opts.next_events_r,
+ parse_actions(
+ StateCall, NewDebug, S, Actions,
+ TransOpts#trans_opts{
+ next_events_r = [{Type,Content}|NextEventsR]});
+ _ ->
+ [error,
+ {bad_action_from_state_function,{next_events,Type,Content}},
+ ?STACKTRACE(),
+ Debug]
+ end.
+
+parse_actions_timeout(
+ StateCall, Debug, S, Actions, TransOpts,
+ {TimerType,Time,TimerMsg,TimerOpts} = AbsoluteTimeout) ->
+ %%
+ case classify_timer(Time, listify(TimerOpts)) of
+ absolute ->
+ parse_actions_timeout_add(
+ StateCall, Debug, S, Actions,
+ TransOpts, AbsoluteTimeout);
+ relative ->
+ RelativeTimeout = {TimerType,Time,TimerMsg},
+ parse_actions_timeout_add(
+ StateCall, Debug, S, Actions,
+ TransOpts, RelativeTimeout);
+ badarg ->
+ [error,
+ {bad_action_from_state_function,AbsoluteTimeout},
+ ?STACKTRACE(),
+ Debug]
+ end;
+parse_actions_timeout(
+ StateCall, Debug, S, Actions, TransOpts,
+ {_,Time,_} = RelativeTimeout) ->
+ case classify_timer(Time, []) of
+ relative ->
+ parse_actions_timeout_add(
+ StateCall, Debug, S, Actions,
+ TransOpts, RelativeTimeout);
+ badarg ->
+ [error,
+ {bad_action_from_state_function,RelativeTimeout},
+ ?STACKTRACE(),
+ Debug]
+ end;
+parse_actions_timeout(
+ StateCall, Debug, S, Actions, TransOpts,
+ Timeout) ->
+ case classify_timer(Timeout, []) of
+ relative ->
+ parse_actions_timeout_add(
+ StateCall, Debug, S, Actions, TransOpts, Timeout);
+ badarg ->
+ [error,
+ {bad_action_from_state_function,Timeout},
+ ?STACKTRACE(),
+ Debug]
+ end.
+
+parse_actions_timeout_add(
+ StateCall, Debug, S, Actions,
+ #trans_opts{timeouts_r = TimeoutsR} = TransOpts, Timeout) ->
+ parse_actions(
+ StateCall, Debug, S, Actions,
+ TransOpts#trans_opts{timeouts_r = [Timeout|TimeoutsR]}).
+
+%% Do the state transition
+loop_event_done(
+ Parent, ?not_sys_debug,
+ #state{postponed = P} = S,
+ Events, Event, NextState, NewData,
+ #trans_opts{
+ postpone = Postpone, hibernate = Hibernate,
+ timeouts_r = [], next_events_r = []}) ->
+ %%
+ %% Optimize the simple cases
+ %% i.e no timer changes, no inserted events and no debug,
+ %% by duplicate stripped down code
+ %%
+ %% Fast path
+ %%
+ case Postpone of
+ true ->
+ loop_event_done_fast(
+ Parent, Hibernate,
+ S,
+ Events, [Event|P], NextState, NewData);
+ false ->
+ loop_event_done_fast(
+ Parent, Hibernate,
+ S,
+ Events, P, NextState, NewData)
+ end;
+loop_event_done(
Parent, Debug_0,
- #{state := State, postponed := P_0,
- timer_refs := TimerRefs_0, timer_types := TimerTypes_0,
- cancel_timers := CancelTimers_0} = S_0,
+ #state{
+ state = State, postponed = P_0,
+ timer_refs = TimerRefs_0, timer_types = TimerTypes_0,
+ cancel_timers = CancelTimers_0} = S,
Events_0, Event_0, NextState, NewData,
- Hibernate, TimeoutsR, Postpone, NextEventsR) ->
+ #trans_opts{
+ hibernate = Hibernate, timeouts_r = TimeoutsR,
+ postpone = Postpone, next_events_r = NextEventsR}) ->
%%
%% All options have been collected and next_events are buffered.
%% Do the actual state transition.
%%
- {Debug_1,P_1} = % Move current event to postponed if Postpone
+ %% Full feature path
+ %%
+ [Debug_1|P_1] = % Move current event to postponed if Postpone
case Postpone of
true ->
- {sys_debug(Debug_0, S_0, State, {postpone,Event_0,State}),
- [Event_0|P_0]};
+ [?sys_debug(
+ Debug_0,
+ {S#state.name,State},
+ {postpone,Event_0,State}),
+ Event_0|P_0];
false ->
- {sys_debug(Debug_0, S_0, State, {consume,Event_0,State}),
- P_0}
+ [?sys_debug(
+ Debug_0,
+ {S#state.name,State},
+ {consume,Event_0,State})|P_0]
end,
- {Events_1,P_2,{TimerTypes_1,CancelTimers_1}} =
- %% Move all postponed events to queue and cancel the
- %% state timeout if the state changes
+ {Events_2,P_2,Timers_2} =
+ %% Move all postponed events to queue,
+ %% cancel the event timer,
+ %% and cancel the state timeout if the state changes
if
NextState =:= State ->
- {Events_0,P_1,{TimerTypes_0,CancelTimers_0}};
+ {Events_0,P_1,
+ cancel_timer_by_type(
+ timeout, {TimerTypes_0,CancelTimers_0})};
true ->
{lists:reverse(P_1, Events_0),
[],
cancel_timer_by_type(
- state_timeout, TimerTypes_0, CancelTimers_0)}
- %% The state timer is removed from TimerTypes_1
- %% but remains in TimerRefs_0 until we get
+ state_timeout,
+ cancel_timer_by_type(
+ timeout, {TimerTypes_0,CancelTimers_0}))}
+ %% The state timer is removed from TimerTypes
+ %% but remains in TimerRefs until we get
%% the cancel_timer msg
end,
- {TimerRefs_2,TimerTypes_2,CancelTimers_2,TimeoutEvents} =
- %% Stop and start non-event timers
- parse_timers(TimerRefs_0, TimerTypes_1, CancelTimers_1, TimeoutsR),
+ {TimerRefs_3,{TimerTypes_3,CancelTimers_3},TimeoutEvents} =
+ %% Stop and start timers
+ parse_timers(TimerRefs_0, Timers_2, TimeoutsR),
%% Place next events last in reversed queue
- Events_2R = lists:reverse(Events_1, NextEventsR),
- %% Enqueue immediate timeout events and start event timer
- Events_3R = prepend_timeout_events(TimeoutEvents, Events_2R),
- S_1 =
- S_0#{
- state := NextState,
- data := NewData,
- postponed := P_2,
- timer_refs := TimerRefs_2,
- timer_types := TimerTypes_2,
- cancel_timers := CancelTimers_2,
- hibernate := Hibernate},
- case lists:reverse(Events_3R) of
- [] ->
- %% Get a new event
- loop(Parent, Debug_1, S_1);
- [Event|Events] ->
+ Events_3R = lists:reverse(Events_2, NextEventsR),
+ %% Enqueue immediate timeout events
+ Events_4R = prepend_timeout_events(TimeoutEvents, Events_3R),
+ loop_event_done(
+ Parent, Debug_1,
+ S#state{
+ state = NextState,
+ data = NewData,
+ postponed = P_2,
+ timer_refs = TimerRefs_3,
+ timer_types = TimerTypes_3,
+ cancel_timers = CancelTimers_3,
+ hibernate = Hibernate},
+ lists:reverse(Events_4R)).
+
+%% Fast path
+%%
+loop_event_done_fast(
+ Parent, Hibernate,
+ #state{
+ state = NextState,
+ timer_types = #{timeout := _} = TimerTypes,
+ cancel_timers = CancelTimers} = S,
+ Events, P, NextState, NewData) ->
+ %%
+ %% Same state, event timeout active
+ %%
+ loop_event_done_fast(
+ Parent, Hibernate, S,
+ Events, P, NextState, NewData,
+ cancel_timer_by_type(
+ timeout, {TimerTypes,CancelTimers}));
+loop_event_done_fast(
+ Parent, Hibernate,
+ #state{state = NextState} = S,
+ Events, P, NextState, NewData) ->
+ %%
+ %% Same state
+ %%
+ loop_event_done(
+ Parent, ?not_sys_debug,
+ S#state{
+ data = NewData,
+ postponed = P,
+ hibernate = Hibernate},
+ Events);
+loop_event_done_fast(
+ Parent, Hibernate,
+ #state{
+ timer_types = #{timeout := _} = TimerTypes,
+ cancel_timers = CancelTimers} = S,
+ Events, P, NextState, NewData) ->
+ %%
+ %% State change, event timeout active
+ %%
+ loop_event_done_fast(
+ Parent, Hibernate, S,
+ lists:reverse(P, Events), [], NextState, NewData,
+ cancel_timer_by_type(
+ state_timeout,
+ cancel_timer_by_type(
+ timeout, {TimerTypes,CancelTimers})));
+loop_event_done_fast(
+ Parent, Hibernate,
+ #state{
+ timer_types = #{state_timeout := _} = TimerTypes,
+ cancel_timers = CancelTimers} = S,
+ Events, P, NextState, NewData) ->
+ %%
+ %% State change, state timeout active
+ %%
+ loop_event_done_fast(
+ Parent, Hibernate, S,
+ lists:reverse(P, Events), [], NextState, NewData,
+ cancel_timer_by_type(
+ state_timeout,
+ cancel_timer_by_type(
+ timeout, {TimerTypes,CancelTimers})));
+loop_event_done_fast(
+ Parent, Hibernate,
+ #state{} = S,
+ Events, P, NextState, NewData) ->
+ %%
+ %% State change, no timeout to automatically cancel
+ %%
+ loop_event_done(
+ Parent, ?not_sys_debug,
+ S#state{
+ state = NextState,
+ data = NewData,
+ postponed = [],
+ hibernate = Hibernate},
+ lists:reverse(P, Events)).
+%%
+%% Fast path
+%%
+loop_event_done_fast(
+ Parent, Hibernate, S,
+ Events, P, NextState, NewData,
+ {TimerTypes,CancelTimers}) ->
+ %%
+ loop_event_done(
+ Parent, ?not_sys_debug,
+ S#state{
+ state = NextState,
+ data = NewData,
+ postponed = P,
+ timer_types = TimerTypes,
+ cancel_timers = CancelTimers,
+ hibernate = Hibernate},
+ Events).
+
+loop_event_done(Parent, Debug, S, Q) ->
+ case Q of
+ [] ->
+ %% Get a new event
+ loop(Parent, Debug, S);
+ [{Type,Content}|Events] ->
%% Loop until out of enqueued events
- loop_event(Parent, Debug_1, S_1, Events, Event, Hibernate)
+ loop_event(Parent, Debug, S, Events, Type, Content)
end.
%%---------------------------------------------------------------------------
%% Server loop helpers
-call_callback_mode(#{module := Module} = S) ->
+call_callback_mode(#state{module = Module} = S) ->
try Module:callback_mode() of
CallbackMode ->
callback_mode_result(S, CallbackMode)
@@ -1181,58 +1587,45 @@ call_callback_mode(#{module := Module} = S) ->
CallbackMode ->
callback_mode_result(S, CallbackMode);
Class:Reason ->
- {Class,Reason,erlang:get_stacktrace()}
+ [Class,Reason,erlang:get_stacktrace()]
end.
callback_mode_result(S, CallbackMode) ->
- case
- parse_callback_mode(
- if
- is_atom(CallbackMode) ->
- [CallbackMode];
- true ->
- CallbackMode
- end, undefined, false)
- of
- {undefined,_} ->
- {error,
- {bad_return_from_callback_mode,CallbackMode},
- ?STACKTRACE()};
- {CBMode,StateEnter} ->
- {ok,
- S#{
- callback_mode := CBMode,
- state_enter := StateEnter}}
- end.
-
-parse_callback_mode([], CBMode, StateEnter) ->
- {CBMode,StateEnter};
-parse_callback_mode([H|T], CBMode, StateEnter) ->
+ callback_mode_result(
+ S, CallbackMode, listify(CallbackMode), undefined, false).
+%%
+callback_mode_result(_S, CallbackMode, [], undefined, _StateEnter) ->
+ [error,
+ {bad_return_from_callback_mode,CallbackMode},
+ ?STACKTRACE()];
+callback_mode_result(S, _CallbackMode, [], CBMode, StateEnter) ->
+ S#state{callback_mode = CBMode, state_enter = StateEnter};
+callback_mode_result(S, CallbackMode, [H|T], CBMode, StateEnter) ->
case callback_mode(H) of
true ->
- parse_callback_mode(T, H, StateEnter);
+ callback_mode_result(S, CallbackMode, T, H, StateEnter);
false ->
- case H of
- state_enter ->
- parse_callback_mode(T, CBMode, true);
- _ ->
- {undefined,StateEnter}
+ case state_enter(H) of
+ true ->
+ callback_mode_result(S, CallbackMode, T, CBMode, true);
+ false ->
+ [error,
+ {bad_return_from_callback_mode,CallbackMode},
+ ?STACKTRACE()]
end
- end;
-parse_callback_mode(_, _CBMode, StateEnter) ->
- {undefined,StateEnter}.
+ end.
call_state_function(
- #{callback_mode := undefined} = S, Type, Content, State, Data) ->
+ #state{callback_mode = undefined} = S, Type, Content, State, Data) ->
case call_callback_mode(S) of
- {ok,NewS} ->
+ #state{} = NewS ->
call_state_function(NewS, Type, Content, State, Data);
Error ->
Error
end;
call_state_function(
- #{callback_mode := CallbackMode, module := Module} = S,
+ #state{callback_mode = CallbackMode, module = Module} = S,
Type, Content, State, Data) ->
try
case CallbackMode of
@@ -1243,333 +1636,108 @@ call_state_function(
end
of
Result ->
- {ok,Result,S}
+ {Result,S}
catch
Result ->
- {ok,Result,S};
+ {Result,S};
Class:Reason ->
- {Class,Reason,erlang:get_stacktrace()}
- end.
-
-
-%% Interpret all callback return variants
-parse_event_result(
- AllowStateChange, Debug, S,
- Events, Event, State, Data, Result) ->
- case Result of
- stop ->
- terminate(
- exit, normal, ?STACKTRACE(), Debug,
- S#{state := State, data := Data},
- [Event|Events]);
- {stop,Reason} ->
- terminate(
- exit, Reason, ?STACKTRACE(), Debug,
- S#{state := State, data := Data},
- [Event|Events]);
- {stop,Reason,NewData} ->
- terminate(
- exit, Reason, ?STACKTRACE(), Debug,
- S#{state := State, data := NewData},
- [Event|Events]);
- %%
- {stop_and_reply,Reason,Replies} ->
- reply_then_terminate(
- exit, Reason, ?STACKTRACE(), Debug,
- S#{state := State, data := Data},
- [Event|Events], Replies);
- {stop_and_reply,Reason,Replies,NewData} ->
- reply_then_terminate(
- exit, Reason, ?STACKTRACE(), Debug,
- S#{state := State, data := NewData},
- [Event|Events], Replies);
- %%
- {next_state,State,NewData} ->
- {State,NewData,[],false};
- {next_state,NextState,NewData} when AllowStateChange ->
- {NextState,NewData,[],true};
- {next_state,State,NewData,Actions} ->
- {State,NewData,Actions,false};
- {next_state,NextState,NewData,Actions} when AllowStateChange ->
- {NextState,NewData,Actions,true};
- %%
- {keep_state,NewData} ->
- {State,NewData,[],false};
- {keep_state,NewData,Actions} ->
- {State,NewData,Actions,false};
- keep_state_and_data ->
- {State,Data,[],false};
- {keep_state_and_data,Actions} ->
- {State,Data,Actions,false};
- %%
- {repeat_state,NewData} ->
- {State,NewData,[],true};
- {repeat_state,NewData,Actions} ->
- {State,NewData,Actions,true};
- repeat_state_and_data ->
- {State,Data,[],true};
- {repeat_state_and_data,Actions} ->
- {State,Data,Actions,true};
- %%
- _ ->
- terminate(
- error,
- {bad_return_from_state_function,Result},
- ?STACKTRACE(), Debug,
- S#{state := State, data := Data},
- [Event|Events])
- end.
-
-
-parse_enter_actions(Debug, S, State, Actions, Hibernate, TimeoutsR) ->
- Postpone = forbidden,
- NextEventsR = forbidden,
- parse_actions(
- Debug, S, State, listify(Actions),
- Hibernate, TimeoutsR, Postpone, NextEventsR).
-
-parse_actions(Debug, S, State, Actions) ->
- Hibernate = false,
- TimeoutsR = [infinity], %% Will cancel event timer
- Postpone = false,
- NextEventsR = [],
- parse_actions(
- Debug, S, State, listify(Actions),
- Hibernate, TimeoutsR, Postpone, NextEventsR).
-%%
-parse_actions(
- Debug, _S, _State, [],
- Hibernate, TimeoutsR, Postpone, NextEventsR) ->
- {ok,Debug,Hibernate,TimeoutsR,Postpone,NextEventsR};
-parse_actions(
- Debug, S, State, [Action|Actions],
- Hibernate, TimeoutsR, Postpone, NextEventsR) ->
- case Action of
- %% Actual actions
- {reply,From,Reply} ->
- case from(From) of
- true ->
- NewDebug = do_reply(Debug, S, State, From, Reply),
- parse_actions(
- NewDebug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR);
- false ->
- {error,
- {bad_action_from_state_function,Action},
- ?STACKTRACE()}
- end;
- %%
- %% Actions that set options
- {hibernate,NewHibernate} when is_boolean(NewHibernate) ->
- parse_actions(
- Debug, S, State, Actions,
- NewHibernate, TimeoutsR, Postpone, NextEventsR);
- hibernate ->
- NewHibernate = true,
- parse_actions(
- Debug, S, State, Actions,
- NewHibernate, TimeoutsR, Postpone, NextEventsR);
- %%
- {postpone,NewPostpone}
- when is_boolean(NewPostpone), Postpone =/= forbidden ->
- parse_actions(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, NewPostpone, NextEventsR);
- postpone when Postpone =/= forbidden ->
- NewPostpone = true,
- parse_actions(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, NewPostpone, NextEventsR);
- %%
- {next_event,Type,Content} ->
- case event_type(Type) of
- true when NextEventsR =/= forbidden ->
- NewDebug =
- sys_debug(Debug, S, State, {in,{Type,Content}}),
- parse_actions(
- NewDebug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone,
- [{Type,Content}|NextEventsR]);
- _ ->
- {error,
- {bad_action_from_state_function,Action},
- ?STACKTRACE()}
- end;
- %%
- {{timeout,_},_,_} = Timeout ->
- parse_actions_timeout(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR, Timeout);
- {{timeout,_},_,_,_} = Timeout ->
- parse_actions_timeout(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR, Timeout);
- {timeout,_,_} = Timeout ->
- parse_actions_timeout(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR, Timeout);
- {timeout,_,_,_} = Timeout ->
- parse_actions_timeout(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR, Timeout);
- {state_timeout,_,_} = Timeout ->
- parse_actions_timeout(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR, Timeout);
- {state_timeout,_,_,_} = Timeout ->
- parse_actions_timeout(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR, Timeout);
- Time ->
- parse_actions_timeout(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR, Time)
+ [Class,Reason,erlang:get_stacktrace()]
end.
-parse_actions_timeout(
- Debug, S, State, Actions,
- Hibernate, TimeoutsR, Postpone, NextEventsR, Timeout) ->
- case Timeout of
- {TimerType,Time,TimerMsg,TimerOpts} ->
- case validate_timer_args(Time, listify(TimerOpts)) of
- true ->
- parse_actions(
- Debug, S, State, Actions,
- Hibernate, [Timeout|TimeoutsR],
- Postpone, NextEventsR);
- false ->
- NewTimeout = {TimerType,Time,TimerMsg},
- parse_actions(
- Debug, S, State, Actions,
- Hibernate, [NewTimeout|TimeoutsR],
- Postpone, NextEventsR);
- error ->
- {error,
- {bad_action_from_state_function,Timeout},
- ?STACKTRACE()}
- end;
- {_,Time,_} ->
- case validate_timer_args(Time, []) of
- false ->
- parse_actions(
- Debug, S, State, Actions,
- Hibernate, [Timeout|TimeoutsR],
- Postpone, NextEventsR);
- error ->
- {error,
- {bad_action_from_state_function,Timeout},
- ?STACKTRACE()}
- end;
- Time ->
- case validate_timer_args(Time, []) of
- false ->
- parse_actions(
- Debug, S, State, Actions,
- Hibernate, [Timeout|TimeoutsR],
- Postpone, NextEventsR);
- error ->
- {error,
- {bad_action_from_state_function,Timeout},
- ?STACKTRACE()}
- end
- end.
-validate_timer_args(Time, Opts) ->
- validate_timer_args(Time, Opts, false).
+%% -> absolute | relative | badarg
+classify_timer(Time, Opts) ->
+ classify_timer(Time, Opts, false).
%%
-validate_timer_args(Time, [], true) when is_integer(Time) ->
- true;
-validate_timer_args(Time, [], false) when is_integer(Time), Time >= 0 ->
- false;
-validate_timer_args(infinity, [], Abs) ->
- Abs;
-validate_timer_args(Time, [{abs,Abs}|Opts], _) when is_boolean(Abs) ->
- validate_timer_args(Time, Opts, Abs);
-validate_timer_args(_, [_|_], _) ->
- error.
+classify_timer(Time, [], Abs) ->
+ case Abs of
+ true when
+ is_integer(Time);
+ Time =:= infinity ->
+ absolute;
+ false when
+ is_integer(Time), 0 =< Time;
+ Time =:= infinity ->
+ relative;
+ _ ->
+ badarg
+ end;
+classify_timer(Time, [{abs,Abs}|Opts], _) when is_boolean(Abs) ->
+ classify_timer(Time, Opts, Abs);
+classify_timer(_, Opts, _) when is_list(Opts) ->
+ badarg.
%% Stop and start timers as well as create timeout zero events
%% and pending event timer
%%
%% Stop and start timers non-event timers
-parse_timers(TimerRefs, TimerTypes, CancelTimers, TimeoutsR) ->
- parse_timers(TimerRefs, TimerTypes, CancelTimers, TimeoutsR, #{}, []).
+parse_timers(TimerRefs, Timers, TimeoutsR) ->
+ parse_timers(TimerRefs, Timers, TimeoutsR, #{}, []).
%%
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, [], _Seen, TimeoutEvents) ->
- {TimerRefs,TimerTypes,CancelTimers,TimeoutEvents};
+ TimerRefs, Timers, [], _Seen, TimeoutEvents) ->
+ %%
+ {TimerRefs,Timers,TimeoutEvents};
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, [Timeout|TimeoutsR],
- Seen, TimeoutEvents) ->
+ TimerRefs, Timers, [Timeout|TimeoutsR], Seen, TimeoutEvents) ->
+ %%
case Timeout of
{TimerType,Time,TimerMsg,TimerOpts} ->
%% Absolute timer
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, TimeoutsR,
- Seen, TimeoutEvents,
+ TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
TimerType, Time, TimerMsg, listify(TimerOpts));
%% Relative timers below
{TimerType,0,TimerMsg} ->
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, TimeoutsR,
- Seen, TimeoutEvents,
+ TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
TimerType, zero, TimerMsg, []);
{TimerType,Time,TimerMsg} ->
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, TimeoutsR,
- Seen, TimeoutEvents,
+ TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
TimerType, Time, TimerMsg, []);
0 ->
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, TimeoutsR,
- Seen, TimeoutEvents,
+ TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
timeout, zero, 0, []);
Time ->
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, TimeoutsR,
- Seen, TimeoutEvents,
+ TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
timeout, Time, Time, [])
end.
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, TimeoutsR,
- Seen, TimeoutEvents,
+ TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents,
TimerType, Time, TimerMsg, TimerOpts) ->
case Seen of
#{TimerType := _} ->
%% Type seen before - ignore
parse_timers(
- TimerRefs, TimerTypes, CancelTimers, TimeoutsR,
- Seen, TimeoutEvents);
+ TimerRefs, Timers, TimeoutsR, Seen, TimeoutEvents);
#{} ->
%% Unseen type - handle
NewSeen = Seen#{TimerType => true},
case Time of
infinity ->
%% Cancel any running timer
- {NewTimerTypes,NewCancelTimers} =
- cancel_timer_by_type(
- TimerType, TimerTypes, CancelTimers),
parse_timers(
- TimerRefs, NewTimerTypes, NewCancelTimers, TimeoutsR,
- NewSeen, TimeoutEvents);
+ TimerRefs, cancel_timer_by_type(TimerType, Timers),
+ TimeoutsR, NewSeen, TimeoutEvents);
zero ->
%% Cancel any running timer
- {NewTimerTypes,NewCancelTimers} =
- cancel_timer_by_type(
- TimerType, TimerTypes, CancelTimers),
%% Handle zero time timeouts later
- TimeoutEvent = {TimerType,TimerMsg},
parse_timers(
- TimerRefs, NewTimerTypes, NewCancelTimers, TimeoutsR,
- NewSeen, [TimeoutEvent|TimeoutEvents]);
+ TimerRefs, cancel_timer_by_type(TimerType, Timers),
+ TimeoutsR, NewSeen,
+ [{TimerType,TimerMsg}|TimeoutEvents]);
_ ->
%% (Re)start the timer
TimerRef =
erlang:start_timer(
Time, self(), TimerMsg, TimerOpts),
- case TimerTypes of
- #{TimerType := OldTimerRef} ->
+ case Timers of
+ {#{TimerType := OldTimerRef} = TimerTypes,
+ CancelTimers} ->
%% Cancel the running timer
cancel_timer(OldTimerRef),
NewCancelTimers = CancelTimers + 1,
@@ -1577,17 +1745,17 @@ parse_timers(
%% both TimerRefs and TimerTypes
parse_timers(
TimerRefs#{TimerRef => TimerType},
- TimerTypes#{TimerType => TimerRef},
- NewCancelTimers, TimeoutsR,
- NewSeen, TimeoutEvents);
- #{} ->
+ {TimerTypes#{TimerType => TimerRef},
+ NewCancelTimers},
+ TimeoutsR, NewSeen, TimeoutEvents);
+ {#{} = TimerTypes,CancelTimers} ->
%% Insert the new timer into
%% both TimerRefs and TimerTypes
parse_timers(
TimerRefs#{TimerRef => TimerType},
- TimerTypes#{TimerType => TimerRef},
- CancelTimers, TimeoutsR,
- NewSeen, TimeoutEvents)
+ {TimerTypes#{TimerType => TimerRef},
+ CancelTimers},
+ TimeoutsR, NewSeen, TimeoutEvents)
end
end
end.
@@ -1609,6 +1777,8 @@ prepend_timeout_events([], EventsR) ->
prepend_timeout_events([{timeout,_} = TimeoutEvent|TimeoutEvents], []) ->
prepend_timeout_events(TimeoutEvents, [TimeoutEvent]);
prepend_timeout_events([{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) ->
%% Just prepend all others
@@ -1619,23 +1789,28 @@ prepend_timeout_events([TimeoutEvent|TimeoutEvents], EventsR) ->
%%---------------------------------------------------------------------------
%% Server helpers
-reply_then_terminate(
- Class, Reason, Stacktrace, Debug,
- #{state := State} = S, Q, Replies) ->
+reply_then_terminate(Class, Reason, Stacktrace, Debug, S, Q, Replies) ->
do_reply_then_terminate(
- Class, Reason, Stacktrace, Debug,
- S, Q, listify(Replies), State).
+ Class, Reason, Stacktrace, Debug, S, Q, listify(Replies)).
%%
do_reply_then_terminate(
- Class, Reason, Stacktrace, Debug, S, Q, [], _State) ->
+ Class, Reason, Stacktrace, Debug, S, Q, []) ->
terminate(Class, Reason, Stacktrace, Debug, S, Q);
do_reply_then_terminate(
- Class, Reason, Stacktrace, Debug, S, Q, [R|Rs], State) ->
+ Class, Reason, Stacktrace, Debug, S, Q, [R|Rs]) ->
case R of
{reply,{_To,_Tag}=From,Reply} ->
- NewDebug = do_reply(Debug, S, State, 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, State);
+ Class, Reason, Stacktrace, NewDebug, S, Q, Rs);
_ ->
terminate(
error,
@@ -1644,14 +1819,9 @@ do_reply_then_terminate(
Debug, S, Q)
end.
-do_reply(Debug, S, State, From, Reply) ->
- reply(From, Reply),
- sys_debug(Debug, S, State, {out,Reply,From}).
-
-
terminate(
Class, Reason, Stacktrace, Debug,
- #{module := Module, state := State, data := Data, postponed := P} = S,
+ #state{module = Module, state = State, data = Data} = S,
Q) ->
case erlang:function_exported(Module, terminate, 3) of
true ->
@@ -1662,7 +1832,7 @@ terminate(
C:R ->
ST = erlang:get_stacktrace(),
error_info(
- C, R, ST, S, Q, P,
+ C, R, ST, S, Q,
format_status(terminate, get(), S)),
sys:print_log(Debug),
erlang:raise(C, R, ST)
@@ -1673,14 +1843,14 @@ terminate(
_ =
case Reason of
normal ->
- sys_debug(Debug, S, State, {terminate,Reason});
+ terminate_sys_debug(Debug, S, State, Reason);
shutdown ->
- sys_debug(Debug, S, State, {terminate,Reason});
+ terminate_sys_debug(Debug, S, State, Reason);
{shutdown,_} ->
- sys_debug(Debug, S, State, {terminate,Reason});
+ terminate_sys_debug(Debug, S, State, Reason);
_ ->
error_info(
- Class, Reason, Stacktrace, S, Q, P,
+ Class, Reason, Stacktrace, S, Q,
format_status(terminate, get(), S)),
sys:print_log(Debug)
end,
@@ -1691,12 +1861,18 @@ terminate(
erlang:raise(Class, Reason, Stacktrace)
end.
+terminate_sys_debug(Debug, S, State, Reason) ->
+ ?sys_debug(Debug, {S#state.name,State}, {terminate,Reason}).
+
+
error_info(
Class, Reason, Stacktrace,
- #{name := Name,
- callback_mode := CallbackMode,
- state_enter := StateEnter},
- Q, P, FmtData) ->
+ #state{
+ name = Name,
+ callback_mode = CallbackMode,
+ state_enter = StateEnter,
+ postponed = P},
+ Q, FmtData) ->
{FixedReason,FixedStacktrace} =
case Stacktrace of
[{M,F,Args,_}|ST]
@@ -1777,7 +1953,7 @@ error_info(
%% Call Module:format_status/2 or return a default value
format_status(
Opt, PDict,
- #{module := Module, state := State, data := Data}) ->
+ #state{module = Module, state = State, data = Data}) ->
case erlang:function_exported(Module, format_status, 2) of
true ->
try Module:format_status(Opt, [PDict,State,Data])
@@ -1802,6 +1978,7 @@ format_status_default(Opt, State, Data) ->
[{data,[{"State",StateData}]}]
end.
+-compile({inline, [listify/1]}).
listify(Item) when is_list(Item) ->
Item;
listify(Item) ->
@@ -1815,14 +1992,16 @@ listify(Item) ->
%%
%% Remove the timer from TimerTypes.
%% When we get the cancel_timer msg we remove it from TimerRefs.
-cancel_timer_by_type(TimerType, TimerTypes, CancelTimers) ->
+-compile({inline, [cancel_timer_by_type/2]}).
+cancel_timer_by_type(TimerType, {TimerTypes,CancelTimers} = TT_CT) ->
case TimerTypes of
#{TimerType := TimerRef} ->
- cancel_timer(TimerRef),
+ ok = erlang:cancel_timer(TimerRef, [{async,true}]),
{maps:remove(TimerType, TimerTypes),CancelTimers + 1};
#{} ->
- {TimerTypes,CancelTimers}
+ TT_CT
end.
+-compile({inline, [cancel_timer/1]}).
cancel_timer(TimerRef) ->
ok = erlang:cancel_timer(TimerRef, [{async,true}]).
--
cgit v1.2.3