The Tor Browser / file revision

 // |reftest| random -- BigO

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 //-----------------------------------------------------------------------------

 var BUGNUMBER = 416628;

 var summary = 'O(n^2) blowup due to overlong cx->tempPool arena list';

 var actual = '';

 var expect = '';

 //-----------------------------------------------------------------------------

 test();

 //-----------------------------------------------------------------------------

 function test()

 {

   enterFunc ('test');

   printBugNumber(BUGNUMBER);

   printStatus (summary);

   var data = {X:[], Y:[]};

   Function.prototype.inherits = function(parentCtor) {

     moo_inherits(this, parentCtor);

   };

   moo_inherits = function(childCtor, parentCtor) {

     /** @constructor */

     function tempCtor() {};

     tempCtor.prototype = parentCtor.prototype;

     childCtor.superClass_ = parentCtor.prototype;

     childCtor.prototype = new tempCtor();

     childCtor.prototype.constructor = childCtor;

   };

   var jstart =  100;

   var jstop  = 1000;

   var jinterval = (jstop - jstart)/9;

   if (true) { 

     for (var j = jstart; j < jstop; j += jinterval)

     {

       data.X.push(j);

       var code = '';

       for (var i = 0; i < j; i++)

       {

         code += createCode(i);

       }

       gc();

       var start = new Date();

       eval(code);

       var stop = new Date();

       data.Y.push(stop - start);

     }

   }

   var order = BigO(data);

   var msg = '';

   for (var p = 0; p < data.X.length; p++)

   {

     msg += '(' + data.X[p] + ', ' + data.Y[p] + '); ';

   }

   printStatus(msg);

   printStatus('Order: ' + order);

   reportCompare(true, order < 2, 'BigO ' + order + ' < 2');

   exitFunc ('test');

 }

 function createCode(i)

 {

   var code = '';

   code += "var str1_" + i + "='This is 1 a test " + i + " string.';";

   code += "var str2_" + i + "='This is 2 a test " + i + " string.';";

   code += "var str3_" + i + "='This is 3 a test " + i + " string.';";

   code += "var str4_" + i + "='This is 4 a test " + i + " string.';";

   code += "var str5_" + i + "='This is 5 a test " + i + " string.';";

   code += "var str6_" + i + "='This is 6 a test " + i + " string.';";

   code += "var str7_" + i + "='This is 7 a test " + i + " string.';";

   code += "";

   code += "var base" + i + " = function() {this.a_=4;this.b_=5};";

   code += "base" + i + ".f1 = function() {this.a_=4;this.b_=5};";

   code += "base" + i + ".prototype.f2 = function() {this.a_=4;this.b_=5};";

   code += "base" + i + ".prototype.f3 = function() {this.a_=4;this.b_=5};";

   code += "base" + i + ".prototype.f4 = function() {this.a_=4;this.b_=5};";

   code += "base" + i + ".prototype.f5 = function() {this.a_=4;this.b_=5};";

   code += "";

   code += "var child" + i + " = function() {this.a_=4;this.b_=5};";

   code += "child" + i + ".inherits(base" + i + ");";

   code += "child" + i + ".f1 = function() {this.a_=4;this.b_=5};";

   code += "child" + i + ".prototype.f2 = function() {this.a_=4;this.b_=5};";

   code += "child" + i + ".prototype.f3 = function() {this.a_=4;this.b_=5};";

   code += "child" + i + ".prototype.f4 = function() {this.a_=4;this.b_=5};";

   code += "child" + i + ".prototype.f5 = function() {this.a_=4;this.b_=5};";

   code += "";

   code += "var gchild" + i + " = function() {this.a_=4;this.b_=5};";

   code += "gchild" + i + ".inherits(child" + i + ");";

   code += "gchild" + i + ".f1 = function() {this.a_=4;this.b_=5};";

   code += "gchild" + i + ".prototype.f2 = function() {this.a_=4;this.b_=5};";

   code += "gchild" + i + ".prototype.f3 = function() {this.a_=4;this.b_=5};";

   code += "gchild" + i + ".prototype.f4 = function() {this.a_=4;this.b_=5};";

   code += "gchild" + i + ".prototype.f5 = function() {this.a_=4;this.b_=5};";

   return code;

 }