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Viewing changes to src/rabbit_misc.erl

  • Committer: Package Import Robot
  • Author(s): Emile Joubert
  • Date: 2013-06-25 11:28:52 UTC
  • mfrom: (0.5.4) (0.1.39 sid)
  • Revision ID: package-import@ubuntu.com-20130625112852-7po8xajec3kvogvv
Tags: 3.1.2-1
New upstream release

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Lines of Context:
src/rabbit_misc.erl
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-export([multi_call/2]).
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-export([os_cmd/1]).
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-export([gb_sets_difference/2]).
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-export([version/0]).
 
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-export([version/0, which_applications/0]).
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-export([sequence_error/1]).
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-export([json_encode/1, json_decode/1, json_to_term/1, term_to_json/1]).
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-export([check_expiry/1]).
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-spec(os_cmd/1 :: (string()) -> string()).
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-spec(gb_sets_difference/2 :: (gb_set(), gb_set()) -> gb_set()).
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-spec(version/0 :: () -> string()).
 
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-spec(which_applications/0 :: () -> [{atom(), string(), string()}]).
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-spec(sequence_error/1 :: ([({'error', any()} | any())])
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                       -> {'error', any()} | any()).
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-spec(json_encode/1 :: (any()) -> {'ok', string()} | {'error', any()}).
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    {ok, VSN} = application:get_key(rabbit, vsn),
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    VSN.
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%% application:which_applications(infinity) is dangerous, since it can
 
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%% cause deadlocks on shutdown. So we have to use a timeout variant,
 
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%% but w/o creating spurious timeout errors.
 
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which_applications() ->
 
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    try
 
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        application:which_applications()
 
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    catch
 
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        exit:{timeout, _} -> []
 
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    end.
 
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sequence_error([T])                      -> T;
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sequence_error([{error, _} = Error | _]) -> Error;
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sequence_error([_ | Rest])               -> sequence_error(Rest).