%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%----------------------------------------------------------------------
%% Purpose: Displays a sequence chart for trace events (messages/actions)
%%----------------------------------------------------------------------
-module(et_viewer).
%% External exports
-export([file/1,
start/0,
start/1,
start/2,
start_link/1,
start_link/2,
open_event/2,
stop/1,
get_collector_pid/1]).
-include("../include/et.hrl").
-include("et_internal.hrl").
-define(unknown, "UNKNOWN").
%%%----------------------------------------------------------------------
%%% Client side
%%%----------------------------------------------------------------------
%%----------------------------------------------------------------------
%% file(FileName) -> {ok, ViewerPid} | {error, Reason}
%%
%% Start a new event viewer and a corresponding collector
%% and load them with trace events from a trace file.
%%
%% FileName() = string()
%% ViewerPid = pid()
%% Reason = term()
%%----------------------------------------------------------------------
file(FileName) ->
start_link([{trace_client, {file, FileName}}], default).
%%----------------------------------------------------------------------
%% start() -> ok
%%
%% Simplified start of a sequence chart viewer with
%% global tracing activated.
%%
%% Convenient to be used from the command line
%% (erl -s et_viewer) as both the viewer and collector
%% processes are unlinked from the calling process.
%%----------------------------------------------------------------------
start() ->
start([{trace_global, true}], default).
%%----------------------------------------------------------------------
%% start(Options) -> {ok, ViewerPid} | {error, Reason}
%%----------------------------------------------------------------------
start(GUI) when GUI =:= wx; GUI =:= default ->
start_link([{trace_global, true}], GUI);
start(Options) ->
start_link([{parent_pid, undefined} | Options], default).
start(Options, GUI) ->
start_link([{parent_pid, undefined} | Options], GUI).
%%----------------------------------------------------------------------
%% start_link(Options) -> {ok, ViewerPid} | {error, Reason}
%%
%% Start a sequence chart viewer for trace events (messages/actions)
%%
%% Options = [option() | collector_option()]
%%
%% option() =
%% {parent_pid, extended_pid()} |
%% {title, term()} |
%% {detail_level, detail_level()} |
%% {is_suspended, boolean()} |
%% {scale, integer()} |
%% {width, integer()} |
%% {height, integer()} |
%% {collector_pid, extended_pid()} |
%% {event_order, event_order()} |
%% {active_filter, atom()} |
%% {max_events, extended_integer()} |
%% {max_actors, extended_integer()} |
%% {trace_global, et_collector_trace_global()} |
%% {trace_pattern, et_collector_trace_pattern()} |
%% {trace_port, et_collector_trace_port()} |
%% {trace_max_queue, et_collector_trace_max_queue()} |
%% {trace_client, et_collector_trace_client()} |
%% {dict_insert, {filter, filter_name()}, event_filter_fun()} |
%% {dict_insert, et_collector_dict_key(), et_collector_dict_val()} |
%% {dict_delete, {filter, filter_name()}} |
%% {dict_delete, et_collector_dict_key()} |
%% {actors, actors()} |
%% {first_event, first_key()} |
%% {hide_unknown, boolean()} |
%% {hide_actions, boolean()} |
%% {display_mode, display_mode()}
%%
%% extended_pid() = pid() | undefined
%% detail_level() = min | max | integer(X) when X >=0, X =< 100
%% event_order() = trace_ts | event_ts
%% extended_integer() = integer() | infinity
%% display_mode() = all | {search_actors, direction(), first_key(), actors()}
%% direction() = forward | reverse
%% first_key() = event_key()
%% actors() = [term()]
%%
%% filter_name() = atom()
%% filter_fun() = fun(Event) -> false | true | {true, NewEvent}
%% Event = NewEvent = record(event)
%%
%% ViewerPid = pid()
%% Reason = term()
%%
%% A filter_fun() takes an event record as sole argument
%% and returns false | true | {true, NewEvent}.
%%----------------------------------------------------------------------
start_link(GUI) when GUI =:= wx; GUI =:= default ->
start_link([{trace_global, true}], GUI);
start_link(Options) ->
start_link(Options, default).
start_link(Options, GUI) ->
case GUI of
wx ->
et_wx_viewer:start_link(Options);
default ->
start_link(Options, which_gui())
end.
which_gui() -> wx.
get_collector_pid(ViewerPid) ->
call(ViewerPid, get_collector_pid).
%%----------------------------------------------------------------------
%% stop(ViewerPid) -> ok
%%
%% Stops a viewer
%%
%% ViewerPid = pid()
%%----------------------------------------------------------------------
stop(ViewerPid) ->
call(ViewerPid, stop).
%%----------------------------------------------------------------------
open_event(ViewerPid, N) ->
call(ViewerPid, {open_event, N}).
%%----------------------------------------------------------------------
call(ViewerPid, Request) ->
gen_server:call(ViewerPid, Request, infinity).
