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
|
/*
* Copyright (c) 2015, 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.
*/
import java.util.LinkedList;
import java.util.List;
import sun.java2d.Disposer;
import sun.java2d.DisposerRecord;
/**
* @test
* @bug 8129457
* @summary Check Disposer disposes all objects without any memory leaks
* @run main/othervm -mx128m TestDisposerLeak
* @modules java.desktop/sun.java2d
*/
public final class TestDisposerLeak {
private static final int COUNT = 30000;
private static volatile boolean disposerComplete;
private static volatile boolean readyForDispose;
static int disposeCount = 0;
public static void main(String[] args) throws Exception {
TestDisposerLeak test = new TestDisposerLeak();
test.testLeak();
while (!disposerComplete) {}
if (disposeCount != COUNT) {
System.err.println("dispose called " + disposeCount);
throw new RuntimeException("All objects are not disposed");
}else {
System.out.println("Test PASSED");
}
}
public void testLeak() throws Exception {
MyDisposerRec disposerRecord = new MyDisposerRec();
for (int i = 0; i < 30000; i++) {
Disposer.addObjectRecord(new Object(), disposerRecord);
}
generateOOME();
readyForDispose = true;
Disposer.addObjectRecord(new Object(), new EndRec());
generateOOME();
}
class MyDisposerRec implements DisposerRecord, Disposer.PollDisposable {
public void dispose() {
while (!readyForDispose) {}
disposeCount++;
Disposer.pollRemove();
}
}
class EndRec implements DisposerRecord, Disposer.PollDisposable {
public void dispose() {
disposerComplete = true;
}
}
private static void generateOOME() throws Exception {
List<Object> leak = new LinkedList<>();
try {
while (true) {
leak.add(new byte[1024 * 1024]);
}
} catch (OutOfMemoryError e) {
}
// Give the GC a chance at that weakref in case of slow systems
Thread.sleep(2000);
}
}
|
