1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 8205399
* @summary Check for AssertionError from HashMap TreeBin after Iterator.remove
* @run testng/othervm -esa TreeBinAssert
*/
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import org.testng.annotations.BeforeTest;
import java.util.Map;
import java.util.Set;
import java.util.Iterator;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.function.BiConsumer;
import java.util.function.Function;
public class TreeBinAssert {
private static final int ITR_RM = -1; // Remove an item via Iterator
private static final int BIN352442_SIZE = 524288;
private static final int BIN552165_SIZE = 1048576;
@DataProvider(name = "SizeAndHashes")
public Object[][] sizeAndHashes() {
return new Object[][] {
{ // Bin 352442
BIN352442_SIZE,
new int[] {
2020958394,
631595194,
1984782522,
419782842,
285565114,
1432182970,
841310394,
320692410,
303390906,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
519397562,
ITR_RM,
626352314,
101540026
}
},{ // Bin 552165
BIN552165_SIZE,
new int[] {
790129893,
1214803173,
1212706021,
608726245,
2073586917,
1433955557,
692612325,
370699493,
2061004005,
48786661,
ITR_RM,
ITR_RM,
1418226917,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
ITR_RM,
1487432933,
ITR_RM,
ITR_RM,
1880648933,
338193637
}
}
};
}
@BeforeTest
public void checkAssertionStatus() {
if (!HashMap.class.desiredAssertionStatus()) {
System.out.println("*** Superficial test run. Test should be run with -esa ***\n");
return;
}
}
@Test(dataProvider = "SizeAndHashes")
public void testMap(int size, int[] hashes) {
Map<Key,Integer> map = new HashMap<>(size);
doTest(map, hashes,
(c,k) -> { ((Map<Key,Integer>)c).put(k,0); },
(c) -> { return ((Map<Key,Integer>)c).keySet().iterator(); }
);
}
@Test(dataProvider = "SizeAndHashes")
public void testSet(int size, int[] hashes) {
Set<Key> set = new LinkedHashSet<>(size);
doTest(set, hashes,
(c,k) -> { ((Set<Key>)c).add(k); },
(c) -> { return ((Set<Key>)c).iterator(); }
);
}
private void doTest(Object collection, int[] hashes,
BiConsumer<Object,Key> addKey,
Function<Object,Iterator<Key>> mkItr) {
Iterator<Key> itr = null; // saved iterator, used for removals
for (int h : hashes) {
if (h == ITR_RM) {
if (itr == null) {
itr = mkItr.apply(collection);
}
itr.next();
itr.remove();
} else {
itr = null;
addKey.accept(collection, new Key(h));
}
}
}
/**
* Class that will have specified hash code in a HashMap.
*/
static class Key implements Comparable<Key> {
final int hash;
public Key(int desiredHash) {
// Account for processing done by HashMap
this.hash = desiredHash ^ (desiredHash >>> 16);
}
@Override public int hashCode() { return this.hash; }
@Override public boolean equals(Object o) {
return o.hashCode() == this.hashCode();
}
@Override public int compareTo(Key k) {
return Integer.compare(this.hash, k.hash);
}
}
}
|
