1 /* 2 * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * JDK-8044851: nashorn properties leak memory 26 * 27 * @test 28 * @option -Dnashorn.debug=true 29 * @fork 30 */ 31 32 var Property = Java.type("jdk.nashorn.internal.runtime.Property"); 33 var PropertyMap = Java.type("jdk.nashorn.internal.runtime.PropertyMap"); 34 35 // Class objects 36 var objectCls = Java.type("java.lang.Object").class; 37 var propertyCls = Property.class; 38 var propertyMapCls = PropertyMap.class; 39 40 // Method objects 41 var findPropertyMethod = propertyMapCls.getMethod("findProperty", objectCls); 42 var getKeyMethod = propertyCls.getMethod("getKey"); 43 var isSpillMethod = propertyCls.getMethod("isSpill"); 44 var getSlotMethod = propertyCls.getMethod("getSlot"); 45 46 function printProperty(value, property) { 47 print(value, getKeyMethod.invoke(property), 48 isSpillMethod.invoke(property) ? "spill" : "field", getSlotMethod.invoke(property)); 49 } 50 51 function findProperty(obj, name) { 52 var map = Debug.map(obj); 53 return findPropertyMethod.invoke(map, name); 54 } 55 56 var obj = {}, i, name; 57 58 for (i = 0; i < 8; ++i) { 59 name = 'property' + i; 60 obj[name] = 'a' + i; 61 printProperty(obj[name], findProperty(obj, name)); 62 } 63 print(); 64 65 for (i = 0; i < 8; ++i) { 66 name = 'property' + i; 67 delete obj[name]; 68 } 69 70 for (i = 0; i < 8; ++i) { 71 name = 'property' + i; 72 obj[name] = 'b' + i; 73 printProperty(obj[name], findProperty(obj, name)); 74 } 75 print(); 76 77 for (i = 0; i < 8; ++i) { 78 name = 'property' + i; 79 Object.defineProperty(obj, name, {get: function() {return i;}, set: function(v) {}, configurable: true}); 80 printProperty(obj[name], findProperty(obj, name)); 81 } 82 print(); 83 84 for (i = 0; i < 8; ++i) { 85 name = 'property' + i; 86 delete obj[name]; 87 } 88 89 for (i = 0; i < 8; ++i) { 90 name = 'property' + i; 91 obj[name] = 'c' + i; 92 printProperty(obj[name], findProperty(obj, name)); 93 } 94 print(); 95 96 for (i = 7; i > -1; --i) { 97 name = 'property' + i; 98 delete obj[name]; 99 } 100 101 for (i = 0; i < 8; ++i) { 102 name = 'property' + i; 103 obj[name] = 'd' + i; 104 printProperty(obj[name], findProperty(obj, name)); 105 } 106 print(); 107 108 for (i = 0; i < 8; ++i) { 109 name = 'property' + i; 110 Object.defineProperty(obj, name, {get: function() {return i;}, set: function(v) {}}); 111 printProperty(obj[name], findProperty(obj, name)); 112 }