1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 6 var MapBenchmark = new BenchmarkSuite('WeakMap', [1000], [ 7 new Benchmark('Set', false, false, 0, WeakMapSet), 8 new Benchmark('Has', false, false, 0, WeakMapHas, WeakMapSetup, 9 WeakMapTearDown), 10 new Benchmark('Get', false, false, 0, WeakMapGet, WeakMapSetup, 11 WeakMapTearDown), 12 new Benchmark('Delete', false, false, 0, WeakMapDelete, WeakMapSetup, 13 WeakMapTearDown), 14 ]); 15 16 17 var wm; 18 var N = 10; 19 var keys = []; 20 21 22 for (var i = 0; i < N * 2; i++) { 23 keys[i] = {}; 24 } 25 26 27 function WeakMapSetup() { 28 wm = new WeakMap; 29 for (var i = 0; i < N; i++) { 30 wm.set(keys[i], i); 31 } 32 } 33 34 35 function WeakMapTearDown() { 36 wm = null; 37 } 38 39 40 function WeakMapSet() { 41 WeakMapSetup(); 42 WeakMapTearDown(); 43 } 44 45 46 function WeakMapHas() { 47 for (var i = 0; i < N; i++) { 48 if (!wm.has(keys[i])) { 49 throw new Error(); 50 } 51 } 52 for (var i = N; i < 2 * N; i++) { 53 if (wm.has(keys[i])) { 54 throw new Error(); 55 } 56 } 57 } 58 59 60 function WeakMapGet() { 61 for (var i = 0; i < N; i++) { 62 if (wm.get(keys[i]) !== i) { 63 throw new Error(); 64 } 65 } 66 for (var i = N; i < 2 * N; i++) { 67 if (wm.get(keys[i]) !== undefined) { 68 throw new Error(); 69 } 70 } 71 } 72 73 74 function WeakMapDelete() { 75 // This is run more than once per setup so we will end up deleting items 76 // more than once. Therefore, we do not the return value of delete. 77 for (var i = 0; i < N; i++) { 78 wm.delete(keys[i]); 79 } 80 } 81
