20022016 Ericsson AB. 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. et_viewer Håkan Mattsson Håkan Mattsson Håkan Mattsson %VSN% et_viewer.xml
et_viewer Displays a sequence chart for trace events (messages/actions)

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()

Start a new event viewer and a corresponding collector and load them with trace events from a trace file.

 start() -> ok Simplified start of a sequence chart viewer with global tracing activated.

Simplified start of a sequence chart viewer with global tracing activated.

Convenient to be used from the command line (erl -s et_viewer).

 start(Options) -> ok Start of a sequence chart viewer without linking to the parent process.

Start of a sequence chart viewer without linking to the parent process.

 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_actors, extended_integer()} | {trace_pattern, et_collector_trace_pattern()} | {trace_port, et_collector_trace_port()} | {trace_global, et_collector_trace_global()} | {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()

Start a sequence chart viewer for trace events (messages/actions)

A filter_fun() takes an event record as sole argument and returns false | true | {true, NewEvent}.

If the collector_pid is undefined a new et_collector will be started with the following parameter settings: parent_pid, event_order, trace_global, trace_pattern, trace_port, trace_max_queue, trace_client, dict_insert and dict_delete. The new et_viewer will register itself as an et_collector subscriber.

Default values:

parent_pid - self(). title - "et_viewer". detail_level - max. is_suspended - false. scale - 2. width - 800. height - 600. collector_pid - undefined. event_order - trace_ts. active_filter - collector. max_actors - 5. actors - ["UNKNOWN"]. first_event - first. hide_unknown - false. hide_actions - false. display_mode - all. get_collector_pid(ViewerPid) -> CollectorPid Returns the identifier of the collector process ViewerPid = pid() CollectorPid = pid()

Returns the identifier of the collector process.

 stop(ViewerPid) -> ok Stops a viewer ViewerPid = pid()

Stops a viewer process.