Tue, 16 Jan 2018 23:10:07 -0800
Merge
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * - Neither the name of Oracle nor the names of its
16 * contributors may be used to endorse or promote products derived
17 * from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
32 /*
33 * A micro-benchmark for getters and setters with primitive values,
34 * alternating between ints and doubles. Introduction of primitive
35 * and optimistic user accessors in JDK-8062401 make this faster by
36 * 10x or more by allowing inlining and other optimizations to take place.
37 */
39 var x = {
40 get m() {
41 return this._m;
42 },
43 set m(v) {
44 this._m = v;
45 },
46 get n() {
47 return this._n;
48 },
49 set n(v) {
50 this._n = v;
51 }
52 };
55 function bench(v1, v2, result) {
56 var start = Date.now();
57 x.n = v1;
58 for (var i = 0; i < 1e8; i++) {
59 x.m = v2;
60 if (x.m + x.n !== result) {
61 throw "wrong result";
62 }
63 }
64 print("done in", Date.now() - start, "millis");
65 }
67 for (var i = 0; i < 10; i++) {
68 bench(i, 4, 4 + i);
69 }
71 for (var i = 0; i < 10; i++) {
72 bench(i, 4.5, 4.5 + i);
73 }
75 for (var i = 0; i < 10; i++) {
76 bench(i, 5, 5 + i);
77 }
79 for (var i = 0; i < 10; i++) {
80 bench(i, 5.5, 5.5 + i);
81 }