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egs_sup: Delete the useless upgrade function.

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This commit is contained in:
Loïc Hoguin 2011-02-15 02:46:36 +01:00
parent 9247e51fb7
commit 8f069e72d8
1 changed files with 1 additions and 17 deletions
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18
src/egs_sup.erl
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@ -20,29 +20,13 @@
-module(egs_sup).
-behaviour(supervisor).
-export([init/1]). %% Supervisor callbacks.
-export([start_link/0, upgrade/0]). %% Other functions.
-export([start_link/0]). %% Other functions.
%% @spec start_link() -> ServerRet
%% @doc API for starting the supervisor.
start_link() ->
supervisor:start_link({local, ?MODULE}, ?MODULE, []).
%% @spec upgrade() -> ok
%% @doc Add processes if necessary.
upgrade() ->
{ok, {_, Specs}} = init([]),
Old = sets:from_list(
[Name || {Name, _, _, _} <- supervisor:which_children(?MODULE)]),
New = sets:from_list([Name || {Name, _, _, _, _, _} <- Specs]),
Kill = sets:subtract(Old, New),
sets:fold(fun (Id, ok) ->
supervisor:terminate_child(?MODULE, Id),
supervisor:delete_child(?MODULE, Id),
ok
end, ok, Kill),
[supervisor:start_child(?MODULE, Spec) || Spec <- Specs],
ok.
%% @spec init([]) -> SupervisorTree
%% @doc supervisor callback.
init([]) ->