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 34 function 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 42 bench("[]", function() { 43 []; 44 []; 45 []; 46 }); 47 48 bench("[1, 2, 3]", function() { 49 [1, 2, 3]; 50 [1, 2, 3]; 51 [1, 2, 3]; 52 }); 53 54 bench("[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 60 bench("new Array()", function() { 61 new Array(); 62 new Array(); 63 new Array(); 64 }); 65 66 67 bench("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 73 bench("new Array(10)", function() { 74 new Array(10); 75 new Array(10); 76 new Array(10); 77 }); 78 79 var array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; 80 81 bench("get", function() { 82 array[0]; 83 array[3]; 84 array[6]; 85 }); 86 87 bench("set", function() { 88 array[0] = 0; 89 array[3] = 3; 90 array[6] = 6; 91 }); 92 93 bench("push", function() { 94 var arr = [1, 2, 3]; 95 arr.push(4); 96 arr.push(5); 97 arr.push(6); 98 }); 99 100 bench("pop", function() { 101 var arr = [1, 2, 3]; 102 arr.pop(); 103 arr.pop(); 104 arr.pop(); 105 }); 106 107 bench("splice", function() { 108 [1, 2, 3].splice(0, 2, 5, 6, 7); 109 }); 110 111 var all = function(e) { return true; }; 112 var none = function(e) { return false; }; 113 114 bench("filter all", function() { 115 array.filter(all); 116 }); 117 118 bench("filter none", function() { 119 array.filter(none); 120 }); 121 122 var up = function(a, b) { return a > b ? 1 : -1; }; 123 var down = function(a, b) { return a < b ? 1 : -1; }; 124 125 bench("sort up", function() { 126 [1, 2, 3, 4].sort(up); 127 }); 128 129 bench("sort down", function() { 130 [1, 2, 3, 4].sort(down); 131 }); 132