array-micro.js revision 877:cf4d2252d444 
1/*
2 * Copyright (c) 2010, 2013, 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 */
31
32
33
34function bench(name, func) {
35    var start = Date.now();
36    for (var iter = 0; iter < 5e6; iter++) {
37        func();
38    }
39    print((Date.now() - start) + "\t" + name);
40}
41
42bench("[]", function() {
43    [];
44    [];
45    [];
46});
47
48bench("[1, 2, 3]", function() {
49    [1, 2, 3];
50    [1, 2, 3];
51    [1, 2, 3];
52});
53
54bench("[1 .. 20]", function() {
55    [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20];
56    [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20];
57    [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20];
58});
59
60bench("new Array()", function() {
61    new Array();
62    new Array();
63    new Array();
64});
65
66
67bench("new Array(1, 2, 3)", function() {
68    new Array(1, 2, 3);
69    new Array(1, 2, 3);
70    new Array(1, 2, 3);
71});
72
73bench("new Array(10)", function() {
74    new Array(10);
75    new Array(10);
76    new Array(10);
77});
78
79var array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
80
81bench("get", function() {
82    array[0];
83    array[3];
84    array[6];
85});
86
87bench("set", function() {
88    array[0] = 0;
89    array[3] = 3;
90    array[6] = 6;
91});
92
93bench("push", function() {
94    var arr = [1, 2, 3];
95    arr.push(4);
96    arr.push(5);
97    arr.push(6);
98});
99
100bench("pop", function() {
101    var arr = [1, 2, 3];
102    arr.pop();
103    arr.pop();
104    arr.pop();
105});
106
107bench("splice", function() {
108    [1, 2, 3].splice(0, 2, 5, 6, 7);
109});
110
111var all = function(e) { return true; };
112var none = function(e) { return false; };
113
114bench("filter all", function() {
115    array.filter(all);
116});
117
118bench("filter none", function() {
119    array.filter(none);
120});
121
122var up = function(a, b) { return a > b ? 1 : -1; };
123var down = function(a, b) { return a < b ? 1 : -1; };
124
125bench("sort up", function() {
126    [1, 2, 3, 4].sort(up);
127});
128
129bench("sort down", function() {
130    [1, 2, 3, 4].sort(down);
131});
132
133