%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (the "License"); you may not use this file except in
%% compliance with the License. You may obtain a copy of the License
%% at http://www.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and
%% limitations under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developer of the Original Code is VMware, Inc.
%% Copyright (c) 2007-2011 VMware, Inc.  All rights reserved.
%%

-module(worker_pool_sup).

-behaviour(supervisor).

-export([start_link/0, start_link/1]).

-export([init/1]).

%%----------------------------------------------------------------------------

-ifdef(use_specs).

-spec(start_link/0 :: () -> {'ok', pid()} | {'error', any()}).
-spec(start_link/1 :: (non_neg_integer()) -> {'ok', pid()} | {'error', any()}).

-endif.

%%----------------------------------------------------------------------------

-define(SERVER, ?MODULE).

%%----------------------------------------------------------------------------

start_link() ->
    start_link(erlang:system_info(schedulers)).

start_link(WCount) ->
    supervisor:start_link({local, ?SERVER}, ?MODULE, [WCount]).

%%----------------------------------------------------------------------------

init([WCount]) ->
    {ok, {{one_for_one, 10, 10},
          [{worker_pool, {worker_pool, start_link, []}, transient,
            16#ffffffff, worker, [worker_pool]} |
           [{N, {worker_pool_worker, start_link, [N]}, transient, 16#ffffffff,
             worker, [worker_pool_worker]} || N <- lists:seq(1, WCount)]]}}.