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-<!DOCTYPE html>
-<html>
-<!--
-Copyright 2009 The Closure Library Authors. All Rights Reserved.
-
-Use of this source code is governed by the Apache License, Version 2.0.
-See the COPYING file for details.
--->
-<!--
-Author:  attila@google.com (Attila Bodis)
--->
-<head>
-<meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <title>Closure Performance Tests - goog.pubsub.PubSub</title>
-  <link rel="stylesheet" href="../testing/performancetable.css" />
-  <script src="../base.js"></script>
-  <script>
-    goog.require('goog.events');
-    goog.require('goog.events.EventTarget');
-    goog.require('goog.pubsub.PubSub');
-    goog.require('goog.testing.PerformanceTable');
-    goog.require('goog.testing.PerformanceTimer');
-    goog.require('goog.testing.jsunit');
-  </script>
-</head>
-<body>
-  <h1>goog.pubsub.PubSub Performance Tests</h1>
-  <p>
-    <b>User-agent:</b> <script>document.write(navigator.userAgent);</script>
-  </p>
-  <p>
-    Compares the performance of the event system (<code>goog.events.*</code>)
-    with the <code>goog.pubsub.PubSub</code> class.
-  </p>
-  <p>
-    The baseline test creates 1000 event targets and 1000 objects that handle
-    events dispatched by the event targets, and has each event target dispatch
-    2 events 5 times each.
-  </p>
-  <p>
-    The single-<code>PubSub</code> test creates 1000 publishers, 1000
-    subscribers, and a single pubsub channel.  Each subscriber subscribes to
-    topics on the same pubsub channel.  Each publisher publishes 5 messages to
-    2 topics each via the pubsub channel.
-  </p>
-  <p>
-    The multi-<code>PubSub</code> test creates 1000 publishers that are
-    subclasses of <code>goog.pubsub.PubSub</code> and 1000 subscribers.  Each
-    subscriber subscribes to its own publisher.  Each publisher publishes 5
-    messages to 2 topics each via its own pubsub channel.
-  </p>
-  <div id="perfTable"></div>
-  <hr>
-  <script>
-    var targets, publishers, pubsubs, handlers;
-
-    // Number of objects to test per run.
-    var SAMPLES_PER_RUN = 1000;
-
-    // The performance table & performance timer.
-    var table, timer;
-
-    // Event/topic identifiers.
-    var ACTION = 'action';
-    var CHANGE = 'change';
-
-    // Number of times handlers have been called.
-    var actionCount = 0;
-    var changeCount = 0;
-
-    // Generic event handler class.
-    function Handler() {
-    }
-    Handler.prototype.handleAction = function() {
-      actionCount++;
-    };
-    Handler.prototype.handleChange = function() {
-      changeCount++;
-    };
-
-    // Generic publisher class that uses a global pubsub channel.
-    function Publisher(pubsub, id) {
-      this.pubsub = pubsub;
-      this.id = id;
-    }
-    Publisher.prototype.publish = function(topic) {
-      this.pubsub.publish(this.id + '.' + topic);
-    };
-
-    // PubSub subclass; allows clients to subscribe and uses itself to publish.
-    function PubSub() {
-      goog.pubsub.PubSub.call(this);
-    }
-    goog.inherits(PubSub, goog.pubsub.PubSub);
-
-    // EventTarget subclass; uses goog.events.* to dispatch events.
-    function Target() {
-      goog.events.EventTarget.call(this);
-    }
-    goog.inherits(Target, goog.events.EventTarget);
-    Target.prototype.fireEvent = function(type) {
-      this.dispatchEvent(type);
-    };
-
-    function initHandlers(count) {
-      for (var i = 0; i < count; i++) {
-        handlers[i] = new Handler();
-      }
-    }
-
-    function initPublishers(pubsub, count) {
-      for (var i = 0; i < count; i++) {
-        publishers[i] = new Publisher(pubsub, i);
-      }
-    }
-
-    function initPubSubs(count) {
-      for (var i = 0; i < count; i++) {
-        pubsubs[i] = new PubSub();
-      }
-    }
-
-    function initTargets(count) {
-      for (var i = 0; i < count; i++) {
-        targets[i] = new Target();
-      }
-    }
-
-    function createEventListeners(count) {
-      initHandlers(count);
-      initTargets(count);
-      for (var i = 0; i < count; i++) {
-        goog.events.listen(targets[i], ACTION, Handler.prototype.handleAction,
-            false, handlers[i]);
-        goog.events.listen(targets[i], CHANGE, Handler.prototype.handleChange,
-            false, handlers[i]);
-      }
-    }
-
-    function createGlobalSubscriptions(pubsub, count) {
-      initHandlers(count);
-      initPublishers(pubsub, count);
-      for (var i = 0; i < count; i++) {
-        pubsub.subscribe(i + '.' + ACTION, Handler.prototype.handleAction,
-            handlers[i]);
-        pubsub.subscribe(i + '.' + CHANGE, Handler.prototype.handleChange,
-            handlers[i]);
-      }
-    }
-
-    function createSubscriptions(count) {
-      initHandlers(count);
-      initPubSubs(count);
-      for (var i = 0; i < count; i++) {
-        pubsubs[i].subscribe(ACTION, Handler.prototype.handleAction,
-            handlers[i]);
-        pubsubs[i].subscribe(CHANGE, Handler.prototype.handleChange,
-            handlers[i]);
-      }
-    }
-
-    function dispatchEvents(count) {
-      for (var i = 0; i < count; i++) {
-        for (var j = 0; j < 5; j++) {
-          targets[i].fireEvent(ACTION);
-          targets[i].fireEvent(CHANGE);
-        }
-      }
-    }
-
-    function publishGlobalMessages(count) {
-      for (var i = 0; i < count; i++) {
-        for (var j = 0; j < 5; j++) {
-          publishers[i].publish(ACTION);
-          publishers[i].publish(CHANGE);
-        }
-      }
-    }
-
-    function publishMessages(count) {
-      for (var i = 0; i < count; i++) {
-        for (var j = 0; j < 5; j++) {
-          pubsubs[i].publish(ACTION);
-          pubsubs[i].publish(CHANGE);
-        }
-      }
-    }
-
-    function setUpPage() {
-      timer = new goog.testing.PerformanceTimer();
-      timer.setNumSamples(10);
-      timer.setTimeoutInterval(9000);
-      timer.setDiscardOutliers(true);
-      table = new goog.testing.PerformanceTable(
-          goog.dom.getElement('perfTable'), timer);
-    }
-
-    function setUp() {
-      actionCount = 0;
-      changeCount = 0;
-      handlers = [];
-      publishers = [];
-      pubsubs = [];
-      targets = [];
-    }
-
-    function tearDown() {
-      goog.events.removeAll();
-    }
-
-    function testCreateEventListeners() {
-      table.run(goog.partial(createEventListeners, SAMPLES_PER_RUN),
-          '1A: Create event listeners');
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 2,
-          goog.events.getTotalListenerCount());
-      assertEquals(0, actionCount);
-      assertEquals(0, changeCount);
-    }
-
-    function testCreateGlobalSubscriptions() {
-      var pubsub = new goog.pubsub.PubSub();
-      table.run(
-          goog.partial(createGlobalSubscriptions, pubsub, SAMPLES_PER_RUN),
-          '1B: Create global subscriptions');
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 2,
-          pubsub.getCount());
-      assertEquals(0, actionCount);
-      assertEquals(0, changeCount);
-      pubsub.dispose();
-    }
-
-    function testCreateSubscripions() {
-      table.run(goog.partial(createSubscriptions, SAMPLES_PER_RUN),
-          '1C: Create subscriptions');
-      assertEquals(0, actionCount);
-      assertEquals(0, changeCount);
-    }
-
-    function testDispatchEvents() {
-      createEventListeners(SAMPLES_PER_RUN);
-      table.run(goog.partial(dispatchEvents, SAMPLES_PER_RUN),
-          '2A: Dispatch events');
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, actionCount);
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, changeCount);
-    }
-
-    function testPublishGlobalMessages() {
-      var pubsub = new goog.pubsub.PubSub();
-      createGlobalSubscriptions(pubsub, SAMPLES_PER_RUN);
-      table.run(
-          goog.partial(publishGlobalMessages, SAMPLES_PER_RUN),
-          '2B: Publish global messages');
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, actionCount);
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, changeCount);
-      pubsub.dispose();
-    }
-
-    function testPublishMessages() {
-      createSubscriptions(SAMPLES_PER_RUN);
-      table.run(goog.partial(publishMessages, SAMPLES_PER_RUN),
-          '2C: Publish messages');
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, actionCount);
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, changeCount);
-    }
-
-    function testEvents() {
-      table.run(function() {
-        createEventListeners(SAMPLES_PER_RUN);
-        dispatchEvents(SAMPLES_PER_RUN);
-      }, '3A: Events');
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 2,
-          goog.events.getTotalListenerCount());
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, actionCount);
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, changeCount);
-    }
-
-    function testSinglePubSub() {
-      table.run(function() {
-        var pubsub = new goog.pubsub.PubSub();
-        createGlobalSubscriptions(pubsub, SAMPLES_PER_RUN);
-        publishGlobalMessages(SAMPLES_PER_RUN);
-        pubsub.dispose();
-      }, '3B: Single PubSub');
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, actionCount);
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, changeCount);
-    }
-
-    function testMultiPubSub() {
-      table.run(function() {
-        createSubscriptions(SAMPLES_PER_RUN);
-        publishMessages(SAMPLES_PER_RUN);
-      }, '3C: Multi PubSub');
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, actionCount);
-      assertEquals(SAMPLES_PER_RUN * timer.getNumSamples() * 5, changeCount);
-    }
-  </script>
-</body>
-</html>