gecko/js/tests/js1_8/extensions/simple-tree.js

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is JavaScript Engine testing utilities.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): Jason Orendorff <jorendorff@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
var gTestfile = 'simple-tree.js';
//-----------------------------------------------------------------------------
var summary = "Create a tree of threads";
var N = 50; // number of threads to create
printStatus (summary);
function range(start, stop) {
var a = [];
for (var i = start; i < stop; i++)
a.push(i);
return a;
}
function tree(start, stop) {
sleep(0.001);
if (start >= stop)
return [];
else if (start + 1 >= stop)
return [start];
sleep(0.001);
let mid = start + Math.floor((stop - start) / 2);
let halves = scatter([function () { return tree(start, mid); },
function () { return tree(mid, stop); }]);
sleep(0.001);
return Array.prototype.concat.apply([], halves);
}
var expect;
var actual;
if (typeof scatter == 'undefined' || typeof sleep == 'undefined') {
print('Test skipped. scatter or sleep not defined.');
expect = actual = 'Test skipped.';
} else {
expect = range(0, N).toSource();
actual = tree(0, N).toSource();
}
reportCompare(expect, actual, summary);