Pub/Sub implementations (v7)

Revision 7 of this benchmark created on

Description

Fixed test case for Peter Higgins pubsub implementation. Previous tests weren't actually unsubbing properly causing slow performance.

Preparation HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
  /*    
  
        jQuery pub/sub plugin by Peter Higgins (dante@dojotoolkit.org)
  
        Loosely based on Dojo publish/subscribe API, limited in scope. Rewritten blindly.
  
        Original is (c) Dojo Foundation 2004-2010. Released under either AFL or new BSD, see:
        http://dojofoundation.org/license for more information.
  
  */
  (function($) {
   var topics = {};
  
   $.publish1 = function(topic, args) {
    if (topics[topic]) {
     var currentTopic = topics[topic];
  
     for (var i = 0, j = currentTopic.length; i < j; i++) {
      currentTopic[i].apply($, args || []);
     }
    }
   };
  
   $.subscribe1 = function(topic, callback) {
    if (!topics[topic]) {
     topics[topic] = [];
    }
  
    topics[topic].push(callback);
  
    return {
     "topic": topic,
     "callback": callback
    };
   };
  
   $.unsubscribe1 = function(handle) {
    var topic = handle.topic;
  
    if (topics[topic]) {
     var currentTopic = topics[topic];
  
     for (var i = 0, j = currentTopic.length; i < j; i++) {
      if (currentTopic[i] === handle.callback) {
       currentTopic.splice(i, 1);
      }
     }
    }
   };
  
  })(jQuery);
  
  /*!
   * jQuery Tiny Pub/Sub - v0.3pre - 11/4/2010
   * http://benalman.com/
   * 
   * Copyright (c) 2010 "Cowboy" Ben Alman
   * Dual licensed under the MIT and GPL licenses.
   * http://benalman.com/about/license/
   */
  /*!
   * jQuery Tiny Pub/Sub - v0.X - 11/18/2010
   * http://benalman.com/
   * 
   * Original Copyright (c) 2010 "Cowboy" Ben Alman
   * Dual licensed under the MIT and GPL licenses.
   * http://benalman.com/about/license/
   *
   * Made awesome by Rick Waldron
   *
   */
  (function(jQuery) {
   var o = jQuery({});
   jQuery.each({
    "subscribe2": "bind",
    "unsubscribe2": "unbind",
    "publish2": "trigger"
   }, function(fn, api) {
    jQuery[fn] = function() {
     o[api].apply(o, arguments);
    };
   });
  })(jQuery);
  
  
  /*
   * Simple Pub/Sub Implementation for jQuery
   *
   * Inspired by work from Peter Higgins (https://github.com/phiggins42/bloody-jquery-plugins/blob/master/pubsub.js)
   *
   * This is about the simplest way to write a pubsub JavaScript implementation for use with jQuery.
   */
  
  (function($) {
   // Cache of all topics
   var topics = {};
  
   // Iterates through all subscribers of a topic and invokes their callback,
   // passing optional arguments.
   $.publish3 = function(topic, args) {
    if (topics[topic]) {
     var thisTopic = topics[topic],
         thisArgs = args || [];
  
     for (var i = 0, j = thisTopic.length; i < j; i++) {
      thisTopic[i].apply($, thisArgs);
     }
    }
   };
  
   // Returns a handle needed for unsubscribing
   $.subscribe3 = function(topic, callback) {
    if (!topics[topic]) {
     topics[topic] = [];
    }
  
    topics[topic].push(callback);
  
    return {
     topic: topic,
     callback: callback
    };
   };
  
   // Removes the subscriber from the particular topic its handle was assigned to
   $.unsubscribe3 = function(handle) {
    var topic = handle.topic;
  
    if (topics[topic]) {
     var thisTopic = topics[topic];
  
     for (var i = 0, j = thisTopic.length; i < j; i++) {
      if (thisTopic[i] === handle.callback) {
       thisTopic.splice(i, 1);
       // break; here? duplicate handles are possible
      }
     }
    }
   };
  
  })(jQuery);
  
  
  (function(d) {
  
   // the topic/subscription hash
   var cache = {};
  
   d.publish4 = function( /* String */ topic, /* Array? */ args) {
    // summary: 
    //          Publish some data on a named topic.
    // topic: String
    //          The channel to publish on
    // args: Array?
    //          The data to publish. Each array item is converted into an ordered
    //          arguments on the subscribed functions. 
    //
    // example:
    //          Publish stuff on '/some/topic'. Anything subscribed will be called
    //          with a function signature like: function(a,b,c){ ... }
    //
    //  |               $.publish4("/some/topic", ["a","b","c"]);
    cache[topic] && d.each(cache[topic], function() {
     this.apply(d, args || []);
    });
   };
  
   d.subscribe4 = function( /* String */ topic, /* Function */ callback) {
    // summary:
    //          Register a callback on a named topic.
    // topic: String
    //          The channel to subscribe to
    // callback: Function
    //          The handler event. Anytime something is $.publish'ed on a 
    //          subscribed channel, the callback will be called with the
    //          published array as ordered arguments.
    //
    // returns: Array
    //          A handle which can be used to unsubscribe this particular subscription.
    //  
    // example:
    //  |       $.subscribe4("/some/topic", function(a, b, c){ /* handle data */ });
    //
    if (!cache[topic]) {
     cache[topic] = [];
    }
    cache[topic].push(callback);
    return [topic, callback]; // Array
   };
  
   d.unsubscribe4 = function( /* Array */ handle) {
    // summary:
    //          Disconnect a subscribed function for a topic.
    // handle: Array
    //          The return value from a $.subscribe call.
    // example:
    //  |       var handle = $.subscribe("/something", function(){});
    //  |       $.unsubscribe4(handle);
    var t = handle[0];
    cache[t] && d.each(cache[t], function(idx) {
     if (this == handle[1]) {
      cache[t].splice(idx, 1);
     }
    });
   };
  
  })(jQuery);
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Object cache
var handle = $.subscribe1('foo', function() {
 1 + 1;
});

$.publish1('foo', ['bar']);

$.unsubscribe1(handle);
ready
jQuery events
$.subscribe2('foo', function() {
 1 + 1;
});

$.publish2('foo', ['bar']);

$.unsubscribe2('foo');
ready
higgins inspired
var handle = $.subscribe3('foo', function(msg) {
 1 + 1;
});

$.publish3('foo', ['bar']);

$.unsubscribe3(handle);
ready
higgins again
var handle = $.subscribe4('foo', function(msg) {
 1 + 1;
});

$.publish4('foo', ['bar']);

$.unsubscribe4(handle);
ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.