/* * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /** * Simple benchmark to measure charCodeAt specialized method performance */ var str = "sghjkdsfkjghsdfjkfkjdfkjdfjkdfjkfdjkfdkfldjfhdfpkjdhafgksdjfgldfgjldfkjgdlfjgldkfjgkldfj"; var RESULT1 = 9187; var RESULT2 = 1496; function f() { var len = str.length; var c = 0; for (var i = 0; i < len; i++) { c += str.charCodeAt(i); } return c; } function bench(res) { var d = new Date; var sum = 0; for (var i = 0; i < 1e6; i++) { sum |= f(); } if (sum == res) { print("Verified OK"); } else { print("Verification failed " + sum + " should be " + res); } print((new Date - d) + " ms"); } bench(RESULT1); print("Replacing charCodeAt... "); String.prototype.charCodeAt = function() { return 17; } bench(RESULT2); print("Done");