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%% Copyright (c) 2011-2012, Loïc Hoguin <[email protected]>
%%
%% Permission to use, copy, modify, and/or distribute this software for any
%% purpose with or without fee is hereby granted, provided that the above
%% copyright notice and this permission notice appear in all copies.
%%
%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
%% @private
-module(cowboy_app).
-behaviour(application).
-export([start/2, stop/1, profile_output/0]). %% API.
-type application_start_type() :: normal
| {takeover, node()} | {failover, node()}.
%% API.
-spec start(application_start_type(), any()) -> {ok, pid()}.
start(_Type, _Args) ->
consider_profiling(),
cowboy_sup:start_link().
-spec stop(any()) -> ok.
stop(_State) ->
ok.
-spec profile_output() -> ok.
profile_output() ->
eprof:stop_profiling(),
eprof:log("procs.profile"),
eprof:analyze(procs),
eprof:log("total.profile"),
eprof:analyze(total).
%% Internal.
-spec consider_profiling() -> profiling | not_profiling.
consider_profiling() ->
case application:get_env(profile) of
{ok, true} ->
{ok, _Pid} = eprof:start(),
eprof:start_profiling([self()]);
_ ->
not_profiling
end.
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