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<?xml version="1.0" encoding="latin1" ?>
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<!DOCTYPE erlref SYSTEM "erlref.dtd">
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<year>2002</year><year>2009</year>
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<holder>Ericsson AB. All Rights Reserved.</holder>
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The contents of this file are subject to the Erlang Public License,
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Version 1.1, (the "License"); you may not use this file except in
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compliance with the License. You should have received a copy of the
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Erlang Public License along with this software. If not, it can be
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retrieved online at http://www.erlang.org/.
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Software distributed under the License is distributed on an "AS IS"
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basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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the License for the specific language governing rights and limitations
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<title>et_viewer</title>
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<prepared>Håkan Mattsson</prepared>
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<responsible>Håkan Mattsson</responsible>
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<approved>Håkan Mattsson</approved>
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<module>et_viewer</module>
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<modulesummary>Displays a sequence chart for trace events (messages/actions)</modulesummary>
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<name>file(FileName) -> {ok, ViewerPid} | {error, Reason}</name>
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<fsummary>Start a new event viewer and a corresponding collector and load them with trace events from a trace file.</fsummary>
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<v>FileName() = string()</v>
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<v>ViewerPid = pid()</v>
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<v>Reason = term()</v>
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<p>Start a new event viewer and a corresponding collector
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and load them with trace events from a trace file.</p>
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<name>start() -> ok</name>
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<fsummary>Simplified start of a sequence chart viewer with global tracing activated.</fsummary>
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<p>Simplified start of a sequence chart viewer with
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global tracing activated.</p>
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<p>Convenient to be used from the command line
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(erl -s et_viewer).</p>
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<name>start(Options) -> ok</name>
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<fsummary>Start of a sequence chart viewer without linking to the parent process.</fsummary>
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<p>Start of a sequence chart viewer without linking
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to the parent process.</p>
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<name>start_link(Options) -> {ok, ViewerPid} | {error, Reason}</name>
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<fsummary>Start a sequence chart viewer for trace events (messages/actions)</fsummary>
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<v>Options = [option() | collector_option()]</v>
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<v>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_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()}</v>
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<v>extended_pid() = pid() | undefined</v>
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<v>detail_level() = min | max | integer(X) when X >=0, X =< 100</v>
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<v>event_order() = trace_ts | event_ts</v>
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<v>extended_integer() = integer() | infinity</v>
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<v>display_mode() = all | {search_actors, direction(), first_key(), actors()}</v>
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<v>direction() = forward | reverse</v>
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<v>first_key() = event_key()</v>
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<v>actors() = [term()]</v>
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<v>filter_name() = atom()</v>
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<v>filter_fun() = fun(Event) -> false | true | {true, NewEvent}</v>
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<v>Event = NewEvent = record(event)</v>
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<v>ViewerPid = pid()</v>
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<v>Reason = term()</v>
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<p>Start a sequence chart viewer for trace events
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(messages/actions)</p>
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<p>A filter_fun() takes an event record as sole argument
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and returns false | true | {true, NewEvent}.</p>
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<p>If the <c>collector_pid</c> is <c>undefined</c> a new
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<c>et_collecor</c> will be started with the following
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parameter settings: <c>parent_pid</c>, <c>event_order</c>,
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<c>trace_global</c>, <c>trace_pattern</c>, <c>trace_port</c>, <c>trace_max_queue</c>,
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<c>trace_client</c>, <c>dict_insert</c> and <c>dict_delete</c>.
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The new <c>et_viewer</c> will register itself as an <c>et_collecor</c>
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<p>Default values:</p>
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<list type="bulleted">
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<item>parent_pid - self().</item>
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<item>title - "et_viewer".</item>
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<item>detail_level - max.</item>
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<item>is_suspended - false.</item>
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<item>scale - 2.</item>
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<item>width - 800.</item>
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<item>height - 600.</item>
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<item>collector_pid - undefined.</item>
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<item>event_order - trace_ts.</item>
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<item>active_filter - collector.</item>
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<item>max_events - 100.</item>
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<item>max_actors - 5.</item>
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<item>actors - ["UNKNOWN"].</item>
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<item>first_event - first.</item>
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<item>hide_unknown - false.</item>
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<item>hide_actions - false.</item>
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<item>display_mode - all.</item>
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<name>get_collector_pid(ViewerPid) -> CollectorPid</name>
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<fsummary>Returns the identifier of the collector process</fsummary>
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<v>ViewerPid = pid()</v>
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<v>CollectorPid = pid()</v>
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<p>Returns the identifier of the collector process.</p>
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<name>stop(ViewerPid) -> ok</name>
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<fsummary>Stops a viewer</fsummary>
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<v>ViewerPid = pid()</v>
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<p>Stops a viewer process.</p>