Thu, 31 Aug 2017 15:30:47 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * |
aoqi@0 | 4 | * Redistribution and use in source and binary forms, with or without |
aoqi@0 | 5 | * modification, are permitted provided that the following conditions |
aoqi@0 | 6 | * are met: |
aoqi@0 | 7 | * |
aoqi@0 | 8 | * - Redistributions of source code must retain the above copyright |
aoqi@0 | 9 | * notice, this list of conditions and the following disclaimer. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * - Redistributions in binary form must reproduce the above copyright |
aoqi@0 | 12 | * notice, this list of conditions and the following disclaimer in the |
aoqi@0 | 13 | * documentation and/or other materials provided with the distribution. |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * - Neither the name of Oracle nor the names of its |
aoqi@0 | 16 | * contributors may be used to endorse or promote products derived |
aoqi@0 | 17 | * from this software without specific prior written permission. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
aoqi@0 | 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
aoqi@0 | 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
aoqi@0 | 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
aoqi@0 | 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
aoqi@0 | 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
aoqi@0 | 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
aoqi@0 | 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
aoqi@0 | 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
aoqi@0 | 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
aoqi@0 | 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
aoqi@0 | 30 | */ |
aoqi@0 | 31 | |
aoqi@0 | 32 | |
aoqi@0 | 33 | |
aoqi@0 | 34 | function bench(name, func) { |
aoqi@0 | 35 | var start = Date.now(); |
aoqi@0 | 36 | for (var iter = 0; iter < 5e6; iter++) { |
aoqi@0 | 37 | func(); |
aoqi@0 | 38 | } |
aoqi@0 | 39 | print((Date.now() - start) + "\t" + name); |
aoqi@0 | 40 | } |
aoqi@0 | 41 | |
aoqi@0 | 42 | bench("[]", function() { |
aoqi@0 | 43 | []; |
aoqi@0 | 44 | []; |
aoqi@0 | 45 | []; |
aoqi@0 | 46 | }); |
aoqi@0 | 47 | |
aoqi@0 | 48 | bench("[1, 2, 3]", function() { |
aoqi@0 | 49 | [1, 2, 3]; |
aoqi@0 | 50 | [1, 2, 3]; |
aoqi@0 | 51 | [1, 2, 3]; |
aoqi@0 | 52 | }); |
aoqi@0 | 53 | |
aoqi@0 | 54 | bench("[1 .. 20]", function() { |
aoqi@0 | 55 | [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]; |
aoqi@0 | 56 | [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]; |
aoqi@0 | 57 | [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]; |
aoqi@0 | 58 | }); |
aoqi@0 | 59 | |
aoqi@0 | 60 | bench("new Array()", function() { |
aoqi@0 | 61 | new Array(); |
aoqi@0 | 62 | new Array(); |
aoqi@0 | 63 | new Array(); |
aoqi@0 | 64 | }); |
aoqi@0 | 65 | |
aoqi@0 | 66 | |
aoqi@0 | 67 | bench("new Array(1, 2, 3)", function() { |
aoqi@0 | 68 | new Array(1, 2, 3); |
aoqi@0 | 69 | new Array(1, 2, 3); |
aoqi@0 | 70 | new Array(1, 2, 3); |
aoqi@0 | 71 | }); |
aoqi@0 | 72 | |
aoqi@0 | 73 | bench("new Array(10)", function() { |
aoqi@0 | 74 | new Array(10); |
aoqi@0 | 75 | new Array(10); |
aoqi@0 | 76 | new Array(10); |
aoqi@0 | 77 | }); |
aoqi@0 | 78 | |
aoqi@0 | 79 | var array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; |
aoqi@0 | 80 | |
aoqi@0 | 81 | bench("get", function() { |
aoqi@0 | 82 | array[0]; |
aoqi@0 | 83 | array[3]; |
aoqi@0 | 84 | array[6]; |
aoqi@0 | 85 | }); |
aoqi@0 | 86 | |
aoqi@0 | 87 | bench("set", function() { |
aoqi@0 | 88 | array[0] = 0; |
aoqi@0 | 89 | array[3] = 3; |
aoqi@0 | 90 | array[6] = 6; |
aoqi@0 | 91 | }); |
aoqi@0 | 92 | |
aoqi@0 | 93 | bench("push", function() { |
aoqi@0 | 94 | var arr = [1, 2, 3]; |
aoqi@0 | 95 | arr.push(4); |
aoqi@0 | 96 | arr.push(5); |
aoqi@0 | 97 | arr.push(6); |
aoqi@0 | 98 | }); |
aoqi@0 | 99 | |
aoqi@0 | 100 | bench("pop", function() { |
aoqi@0 | 101 | var arr = [1, 2, 3]; |
aoqi@0 | 102 | arr.pop(); |
aoqi@0 | 103 | arr.pop(); |
aoqi@0 | 104 | arr.pop(); |
aoqi@0 | 105 | }); |
aoqi@0 | 106 | |
aoqi@0 | 107 | bench("splice", function() { |
aoqi@0 | 108 | [1, 2, 3].splice(0, 2, 5, 6, 7); |
aoqi@0 | 109 | }); |
aoqi@0 | 110 | |
aoqi@0 | 111 | var all = function(e) { return true; }; |
aoqi@0 | 112 | var none = function(e) { return false; }; |
aoqi@0 | 113 | |
aoqi@0 | 114 | bench("filter all", function() { |
aoqi@0 | 115 | array.filter(all); |
aoqi@0 | 116 | }); |
aoqi@0 | 117 | |
aoqi@0 | 118 | bench("filter none", function() { |
aoqi@0 | 119 | array.filter(none); |
aoqi@0 | 120 | }); |
aoqi@0 | 121 | |
aoqi@0 | 122 | var up = function(a, b) { return a > b ? 1 : -1; }; |
aoqi@0 | 123 | var down = function(a, b) { return a < b ? 1 : -1; }; |
aoqi@0 | 124 | |
aoqi@0 | 125 | bench("sort up", function() { |
aoqi@0 | 126 | [1, 2, 3, 4].sort(up); |
aoqi@0 | 127 | }); |
aoqi@0 | 128 | |
aoqi@0 | 129 | bench("sort down", function() { |
aoqi@0 | 130 | [1, 2, 3, 4].sort(down); |
aoqi@0 | 131 | }); |
aoqi@0 | 132 |