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-rw-r--r--lib/stdlib/src/supervisor.erl76
1 files changed, 40 insertions, 36 deletions
diff --git a/lib/stdlib/src/supervisor.erl b/lib/stdlib/src/supervisor.erl
index 3c77501c0f..23f3aaee1f 100644
--- a/lib/stdlib/src/supervisor.erl
+++ b/lib/stdlib/src/supervisor.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2014. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2015. 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.
@@ -107,11 +107,13 @@
-define(SET, sets:set).
-record(state, {name,
- strategy :: strategy(),
+ strategy :: strategy() | 'undefined',
children = [] :: [child_rec()],
- dynamics :: ?DICT(pid(), list()) | ?SET(pid()),
- intensity :: non_neg_integer(),
- period :: pos_integer(),
+ dynamics :: {'dict', ?DICT(pid(), list())}
+ | {'set', ?SET(pid())}
+ | 'undefined',
+ intensity :: non_neg_integer() | 'undefined',
+ period :: pos_integer() | 'undefined',
restarts = [],
module,
args}).
@@ -577,7 +579,7 @@ handle_cast({try_again_restart,Pid}, #state{children=[Child]}=State)
when ?is_simple(State) ->
RT = Child#child.restart_type,
RPid = restarting(Pid),
- case dynamic_child_args(RPid, dynamics_db(RT, State#state.dynamics)) of
+ case dynamic_child_args(RPid, RT, State#state.dynamics) of
{ok, Args} ->
{M, F, _} = Child#child.mfargs,
NChild = Child#child{pid = RPid, mfargs = {M, F, Args}},
@@ -735,7 +737,7 @@ handle_start_child(Child, State) ->
restart_child(Pid, Reason, #state{children = [Child]} = State) when ?is_simple(State) ->
RestartType = Child#child.restart_type,
- case dynamic_child_args(Pid, dynamics_db(RestartType, State#state.dynamics)) of
+ case dynamic_child_args(Pid, RestartType, State#state.dynamics) of
{ok, Args} ->
{M, F, _} = Child#child.mfargs,
NChild = Child#child{pid = Pid, mfargs = {M, F, Args}},
@@ -812,14 +814,16 @@ restart(simple_one_for_one, Child, State) ->
State#state.dynamics)),
case do_start_child_i(M, F, A) of
{ok, Pid} ->
- NState = State#state{dynamics = ?DICTS:store(Pid, A, Dynamics)},
+ DynamicsDb = {dict, ?DICTS:store(Pid, A, Dynamics)},
+ NState = State#state{dynamics = DynamicsDb},
{ok, NState};
{ok, Pid, _Extra} ->
- NState = State#state{dynamics = ?DICTS:store(Pid, A, Dynamics)},
+ DynamicsDb = {dict, ?DICTS:store(Pid, A, Dynamics)},
+ NState = State#state{dynamics = DynamicsDb},
{ok, NState};
{error, Error} ->
- NState = State#state{dynamics = ?DICTS:store(restarting(OldPid), A,
- Dynamics)},
+ DynamicsDb = {dict, ?DICTS:store(restarting(OldPid), A, Dynamics)},
+ NState = State#state{dynamics = DynamicsDb},
report_error(start_error, Error, Child, State#state.name),
{try_again, NState}
end;
@@ -1083,7 +1087,7 @@ wait_dynamic_children(#child{restart_type=RType} = Child, Pids, Sz,
{timeout, TRef, kill} ->
?SETS:fold(fun(P, _) -> exit(P, kill) end, ok, Pids),
- wait_dynamic_children(Child, Pids, Sz-1, undefined, EStack)
+ wait_dynamic_children(Child, Pids, Sz, undefined, EStack)
end.
%%-----------------------------------------------------------------
@@ -1102,31 +1106,32 @@ save_child(Child, #state{children = Children} = State) ->
State#state{children = [Child |Children]}.
save_dynamic_child(temporary, Pid, _, #state{dynamics = Dynamics} = State) ->
- State#state{dynamics = ?SETS:add_element(Pid, dynamics_db(temporary, Dynamics))};
+ DynamicsDb = dynamics_db(temporary, Dynamics),
+ State#state{dynamics = {set, ?SETS:add_element(Pid, DynamicsDb)}};
save_dynamic_child(RestartType, Pid, Args, #state{dynamics = Dynamics} = State) ->
- State#state{dynamics = ?DICTS:store(Pid, Args, dynamics_db(RestartType, Dynamics))}.
+ DynamicsDb = dynamics_db(RestartType, Dynamics),
+ State#state{dynamics = {dict, ?DICTS:store(Pid, Args, DynamicsDb)}}.
dynamics_db(temporary, undefined) ->
?SETS:new();
dynamics_db(_, undefined) ->
?DICTS:new();
-dynamics_db(_,Dynamics) ->
- Dynamics.
-
-dynamic_child_args(Pid, Dynamics) ->
- case ?SETS:is_set(Dynamics) of
- true ->
- {ok, undefined};
- false ->
- ?DICTS:find(Pid, Dynamics)
- end.
+dynamics_db(_, {_Tag, DynamicsDb}) ->
+ DynamicsDb.
+
+dynamic_child_args(_Pid, temporary, _DynamicsDb) ->
+ {ok, undefined};
+dynamic_child_args(Pid, _RT, {dict, DynamicsDb}) ->
+ ?DICTS:find(Pid, DynamicsDb);
+dynamic_child_args(_Pid, _RT, undefined) ->
+ error.
state_del_child(#child{pid = Pid, restart_type = temporary}, State) when ?is_simple(State) ->
NDynamics = ?SETS:del_element(Pid, dynamics_db(temporary, State#state.dynamics)),
- State#state{dynamics = NDynamics};
+ State#state{dynamics = {set, NDynamics}};
state_del_child(#child{pid = Pid, restart_type = RType}, State) when ?is_simple(State) ->
NDynamics = ?DICTS:erase(Pid, dynamics_db(RType, State#state.dynamics)),
- State#state{dynamics = NDynamics};
+ State#state{dynamics = {dict, NDynamics}};
state_del_child(Child, State) ->
NChildren = del_child(Child#child.name, State#state.children),
State#state{children = NChildren}.
@@ -1160,19 +1165,19 @@ split_child(_, [], After) ->
get_child(Name, State) ->
get_child(Name, State, false).
+
get_child(Pid, State, AllowPid) when AllowPid, is_pid(Pid) ->
get_dynamic_child(Pid, State);
get_child(Name, State, _) ->
lists:keysearch(Name, #child.name, State#state.children).
get_dynamic_child(Pid, #state{children=[Child], dynamics=Dynamics}) ->
- DynamicsDb = dynamics_db(Child#child.restart_type, Dynamics),
- case is_dynamic_pid(Pid, DynamicsDb) of
+ case is_dynamic_pid(Pid, Dynamics) of
true ->
{value, Child#child{pid=Pid}};
false ->
RPid = restarting(Pid),
- case is_dynamic_pid(RPid, DynamicsDb) of
+ case is_dynamic_pid(RPid, Dynamics) of
true ->
{value, Child#child{pid=RPid}};
false ->
@@ -1183,13 +1188,12 @@ get_dynamic_child(Pid, #state{children=[Child], dynamics=Dynamics}) ->
end
end.
-is_dynamic_pid(Pid, Dynamics) ->
- case ?SETS:is_set(Dynamics) of
- true ->
- ?SETS:is_element(Pid, Dynamics);
- false ->
- ?DICTS:is_key(Pid, Dynamics)
- end.
+is_dynamic_pid(Pid, {dict, Dynamics}) ->
+ ?DICTS:is_key(Pid, Dynamics);
+is_dynamic_pid(Pid, {set, Dynamics}) ->
+ ?SETS:is_element(Pid, Dynamics);
+is_dynamic_pid(_Pid, undefined) ->
+ false.
replace_child(Child, State) ->
Chs = do_replace_child(Child, State#state.children),
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 12:34:06 +0000