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-rw-r--r--lib/stdlib/src/gen_fsm.erl47
1 files changed, 35 insertions, 12 deletions
diff --git a/lib/stdlib/src/gen_fsm.erl b/lib/stdlib/src/gen_fsm.erl
index f2f1365d3d..3db8c9f4f2 100644
--- a/lib/stdlib/src/gen_fsm.erl
+++ b/lib/stdlib/src/gen_fsm.erl
@@ -113,8 +113,6 @@
start_timer/2,send_event_after/2,cancel_timer/1,
enter_loop/4, enter_loop/5, enter_loop/6, wake_hib/6]).
--export([behaviour_info/1]).
-
%% Internal exports
-export([init_it/6,
system_continue/3,
@@ -128,13 +126,38 @@
%%% Interface functions.
%%% ---------------------------------------------------
--spec behaviour_info(atom()) -> 'undefined' | [{atom(), arity()}].
-
-behaviour_info(callbacks) ->
- [{init,1},{handle_event,3},{handle_sync_event,4},{handle_info,3},
- {terminate,3},{code_change,4}];
-behaviour_info(_Other) ->
- undefined.
+-callback init(Args :: term()) ->
+ {ok, StateName :: atom(), StateData :: term()} |
+ {ok, StateName :: atom(), StateData :: term(), timeout() | hibernate} |
+ {stop, Reason :: term()} | ignore.
+-callback handle_event(Event :: term(), StateName :: atom(),
+ StateData :: term()) ->
+ {next_state, NextStateName :: atom(), NewStateData :: term()} |
+ {next_state, NextStateName :: atom(), NewStateData :: term(),
+ timeout() | hibernate} |
+ {stop, Reason :: term(), NewStateData :: term()}.
+-callback handle_sync_event(Event :: term(), From :: {pid(), Tag :: term()},
+ StateName :: atom(), StateData :: term()) ->
+ {reply, Reply :: term(), NextStateName :: atom(), NewStateData :: term()} |
+ {reply, Reply :: term(), NextStateName :: atom(), NewStateData :: term(),
+ timeout() | hibernate} |
+ {next_state, NextStateName :: atom(), NewStateData :: term()} |
+ {next_state, NextStateName :: atom(), NewStateData :: term(),
+ timeout() | hibernate} |
+ {stop, Reason :: term(), Reply :: term(), NewStateData :: term()} |
+ {stop, Reason :: term(), NewStateData :: term()}.
+-callback handle_info(Info :: term(), StateName :: atom(),
+ StateData :: term()) ->
+ {next_state, NextStateName :: atom(), NewStateData :: term()} |
+ {next_state, NextStateName :: atom(), NewStateData :: term(),
+ timeout() | hibernate} |
+ {stop, Reason :: normal | term(), NewStateData :: term()}.
+-callback terminate(Reason :: normal | shutdown | {shutdown, term()}
+ | term(), StateName :: atom(), StateData :: term()) ->
+ term().
+-callback code_change(OldVsn :: term() | {down, term()}, StateName :: atom(),
+ StateData :: term(), Extra :: term()) ->
+ {ok, NextStateName :: atom(), NewStateData :: term()}.
%%% ---------------------------------------------------
%%% Starts a generic state machine.
@@ -561,16 +584,16 @@ terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug) ->
error_info(Reason, Name, Msg, StateName, StateData, Debug) ->
Reason1 =
case Reason of
- {undef,[{M,F,A}|MFAs]} ->
+ {undef,[{M,F,A,L}|MFAs]} ->
case code:is_loaded(M) of
false ->
- {'module could not be loaded',[{M,F,A}|MFAs]};
+ {'module could not be loaded',[{M,F,A,L}|MFAs]};
_ ->
case erlang:function_exported(M, F, length(A)) of
true ->
Reason;
false ->
- {'function not exported',[{M,F,A}|MFAs]}
+ {'function not exported',[{M,F,A,L}|MFAs]}
end
end;
_ ->