Mon, 11 Jan 2016 13:45:31 -0800
Added tag jdk8u75-b03 for changeset 541de42b5709
1 /*
2 * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /**
25 * Simple benchmark to measure charCodeAt specialized method performance
26 */
28 var str = "sghjkdsfkjghsdfjkfkjdfkjdfjkdfjkfdjkfdkfldjfhdfpkjdhafgksdjfgldfgjldfkjgdlfjgldkfjgkldfj";
29 var RESULT1 = 9187;
30 var RESULT2 = 1496;
32 function f() {
33 var len = str.length;
34 var c = 0;
35 for (var i = 0; i < len; i++) {
36 c += str.charCodeAt(i);
37 }
38 return c;
39 }
41 function bench(res) {
42 var d = new Date;
43 var sum = 0;
44 for (var i = 0; i < 1e6; i++) {
45 sum |= f();
46 }
47 if (sum == res) {
48 print("Verified OK");
49 } else {
50 print("Verification failed " + sum + " should be " + res);
51 }
52 print((new Date - d) + " ms");
53 }
55 bench(RESULT1);
57 print("Replacing charCodeAt... ");
59 String.prototype.charCodeAt = function() { return 17; }
61 bench(RESULT2);
63 print("Done");