diff options
Diffstat (limited to 'lib/percept/src/percept.erl')
| -rw-r--r-- | lib/percept/src/percept.erl | 52 |
1 files changed, 25 insertions, 27 deletions
diff --git a/lib/percept/src/percept.erl b/lib/percept/src/percept.erl index 24ddf1bd14..046e0b7518 100644 --- a/lib/percept/src/percept.erl +++ b/lib/percept/src/percept.erl @@ -26,27 +26,24 @@ -module(percept). -behaviour(application). --export([ - profile/1, - profile/2, - profile/3, - stop_profile/0, - start_webserver/0, - start_webserver/1, - stop_webserver/0, - stop_webserver/1, - analyze/1, - % Application behaviour - start/2, - stop/1]). +-export([profile/1, + profile/2, + profile/3, + stop_profile/0, + start_webserver/0, + start_webserver/1, + stop_webserver/0, + stop_webserver/1, + analyze/1, + % Application behaviour + start/2, + stop/1]). -include("percept.hrl"). %%========================================================================== -%% -%% Type definitions -%% +%% Type definitions %%========================================================================== %% @type percept_option() = procs | ports | exclusive @@ -54,9 +51,7 @@ -type percept_option() :: 'procs' | 'ports' | 'exclusive' | 'scheduler'. %%========================================================================== -%% -%% Application callback functions -%% +%% Application callback functions %%========================================================================== %% @spec start(Type, Args) -> {started, Hostname, Port} | {error, Reason} @@ -76,9 +71,7 @@ stop(_State) -> stop_webserver(0). %%========================================================================== -%% -%% Interface functions -%% +%% Interface functions %%========================================================================== %% @spec profile(Filename::string()) -> {ok, Port} | {already_started, Port} @@ -158,11 +151,11 @@ start_webserver() -> {'started', string(), pos_integer()} | {'error', any()}. start_webserver(Port) when is_integer(Port) -> - application:load(percept), + ok = ensure_loaded(percept), case whereis(percept_httpd) of undefined -> {ok, Config} = get_webserver_config("percept", Port), - inets:start(), + ok = application:ensure_started(inets), case inets:start(httpd, Config) of {ok, Pid} -> AssignedPort = find_service_port_from_pid(inets:services_info(), Pid), @@ -217,9 +210,7 @@ stop_webserver(Port) -> do_stop(Port,[]). %%========================================================================== -%% -%% Auxiliary functions -%% +%% Auxiliary functions %%========================================================================== %% parse_and_insert @@ -337,3 +328,10 @@ get_webserver_config(Servername, Port) when is_list(Servername), is_integer(Port {bind_address, any}, {port, Port}], {ok, Config}. + +ensure_loaded(App) -> + case application:load(App) of + ok -> ok; + {error,{already_loaded,App}} -> ok; + Error -> Error + end. |