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
|
/*
* Copyright (c) 2017, 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.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import sun.hotspot.WhiteBox;
public class CheckCachedResolvedReferencesApp {
public static void main(String args[]) throws Exception {
String path = args[0];
URL url = new File(path).toURI().toURL();
URL[] urls = new URL[] {url};
URLClassLoader loader = new URLClassLoader(urls);
Class hello = loader.loadClass("Hello");
System.out.println("Loaded " + hello + " from " + url + " using loader " + loader);
WhiteBox wb = WhiteBox.getWhiteBox();
if (!wb.areOpenArchiveHeapObjectsMapped()) {
System.out.println("Archived open_archive_heap objects are not mapped.");
System.out.println("This may happen during normal operation. Test Skipped.");
return;
}
// CheckCachedResolvedReferencesApp is shared class and loaded by the
// AppClassLoader. It should have cached resolved_references.
if (wb.isSharedClass(CheckCachedResolvedReferencesApp.class)) {
Object refs1 = wb.getResolvedReferences(CheckCachedResolvedReferencesApp.class);
if (refs1 != null && wb.isShared(refs1)) {
System.out.println(
"resolved references from CheckCachedResolvedReferencesApp is cached");
} else {
throw new RuntimeException(
"FAILED. CheckCachedResolvedReferencesApp has no cached resolved references");
}
}
// Hello is shared class and loaded by the 'loader' defined in current app.
// It should not have cached resolved_references.
if (wb.isSharedClass(hello)) {
Object refs2 = wb.getResolvedReferences(hello);
if (refs2 != null) {
if (!wb.isShared(refs2)) {
System.out.println("resolved references from hello is not cached");
} else {
throw new RuntimeException(
"FAILED. Hello has unexpected cached resolved references");
}
} else {
throw new RuntimeException("FAILED. Hello has no resolved references");
}
}
}
}
|
