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
32var Property = Java.type("jdk.nashorn.internal.runtime.Property");
33var PropertyMap = Java.type("jdk.nashorn.internal.runtime.PropertyMap");
34
35// Class objects
36var objectCls = Java.type("java.lang.Object").class;
37var propertyCls = Property.class;
38var propertyMapCls = PropertyMap.class;
39
40// Method objects
41var findPropertyMethod = propertyMapCls.getMethod("findProperty", objectCls);
42var getKeyMethod = propertyCls.getMethod("getKey");
43var isSpillMethod = propertyCls.getMethod("isSpill");
44var getSlotMethod = propertyCls.getMethod("getSlot");
45
46function printProperty(value, property) {
47    print(value, getKeyMethod.invoke(property),
48        isSpillMethod.invoke(property) ? "spill" : "field", getSlotMethod.invoke(property));
49}
50
51function findProperty(obj, name) {
52    var map = Debug.map(obj);
53    return findPropertyMethod.invoke(map, name);
54}
55
56var obj = {}, i, name;
57
58for (i = 0; i < 8; ++i) {
59    name = 'property' + i;
60    obj[name] = 'a' + i;
61    printProperty(obj[name], findProperty(obj, name));
62}
63print();
64
65for (i = 0; i < 8; ++i) {
66    name = 'property' + i;
67    delete obj[name];
68}
69
70for (i = 0; i < 8; ++i) {
71    name = 'property' + i;
72    obj[name] = 'b' + i;
73    printProperty(obj[name], findProperty(obj, name));
74}
75print();
76
77for (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}
82print();
83
84for (i = 0; i < 8; ++i) {
85    name = 'property' + i;
86    delete obj[name];
87}
88
89for (i = 0; i < 8; ++i) {
90    name = 'property' + i;
91    obj[name] = 'c' + i;
92    printProperty(obj[name], findProperty(obj, name));
93}
94print();
95
96for (i = 7; i > -1; --i) {
97    name = 'property' + i;
98    delete obj[name];
99}
100
101for (i = 0; i < 8; ++i) {
102    name = 'property' + i;
103    obj[name] = 'd' + i;
104    printProperty(obj[name], findProperty(obj, name));
105}
106print();
107
108for (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}
113