author | mockner |
Wed, 03 Feb 2016 11:40:30 -0500 | |
changeset 35917 | 463d67f86eaa |
parent 17311 | 6ba3841cb7f9 |
child 45825 | 4fa7bd62eb84 |
permissions | -rw-r--r-- |
17311 | 1 |
/* |
35917
463d67f86eaa
8079408: Reimplement TraceClassLoading, TraceClassUnloading, and TraceClassLoaderData with Unified Logging.
mockner
parents:
17311
diff
changeset
|
2 |
* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved. |
17311 | 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 |
||
35917
463d67f86eaa
8079408: Reimplement TraceClassLoading, TraceClassUnloading, and TraceClassLoaderData with Unified Logging.
mockner
parents:
17311
diff
changeset
|
24 |
|
463d67f86eaa
8079408: Reimplement TraceClassLoading, TraceClassUnloading, and TraceClassLoaderData with Unified Logging.
mockner
parents:
17311
diff
changeset
|
25 |
/* |
463d67f86eaa
8079408: Reimplement TraceClassLoading, TraceClassUnloading, and TraceClassLoaderData with Unified Logging.
mockner
parents:
17311
diff
changeset
|
26 |
* To use ClassUnloadCommon from a sub-process, see hotspot/test/runtime/logging/ClassLoadUnloadTest.java |
463d67f86eaa
8079408: Reimplement TraceClassLoading, TraceClassUnloading, and TraceClassLoaderData with Unified Logging.
mockner
parents:
17311
diff
changeset
|
27 |
* for an example. |
463d67f86eaa
8079408: Reimplement TraceClassLoading, TraceClassUnloading, and TraceClassLoaderData with Unified Logging.
mockner
parents:
17311
diff
changeset
|
28 |
*/ |
463d67f86eaa
8079408: Reimplement TraceClassLoading, TraceClassUnloading, and TraceClassLoaderData with Unified Logging.
mockner
parents:
17311
diff
changeset
|
29 |
|
17311 | 30 |
import java.io.File; |
31 |
import java.net.MalformedURLException; |
|
32 |
import java.net.URL; |
|
33 |
import java.net.URLClassLoader; |
|
34 |
import java.nio.file.Paths; |
|
35 |
import java.util.ArrayList; |
|
36 |
||
37 |
public class ClassUnloadCommon { |
|
38 |
public static class TestFailure extends RuntimeException { |
|
39 |
TestFailure(String msg) { |
|
40 |
super(msg); |
|
41 |
} |
|
42 |
} |
|
43 |
||
44 |
public static void failIf(boolean value, String msg) { |
|
45 |
if (value) throw new TestFailure("Test failed: " + msg); |
|
46 |
} |
|
47 |
||
48 |
private static volatile Object dummy = null; |
|
49 |
private static void allocateMemory(int kilobytes) { |
|
50 |
ArrayList<byte[]> l = new ArrayList<>(); |
|
51 |
dummy = l; |
|
52 |
for (int i = kilobytes; i > 0; i -= 1) { |
|
53 |
l.add(new byte[1024]); |
|
54 |
} |
|
55 |
l = null; |
|
56 |
dummy = null; |
|
57 |
} |
|
58 |
||
59 |
public static void triggerUnloading() { |
|
60 |
allocateMemory(16 * 1024); // yg size is 8m with cms, force young collection |
|
61 |
System.gc(); |
|
62 |
} |
|
63 |
||
64 |
public static ClassLoader newClassLoader() { |
|
65 |
try { |
|
66 |
return new URLClassLoader(new URL[] { |
|
67 |
Paths.get(System.getProperty("test.classes",".") + File.separatorChar + "classes").toUri().toURL(), |
|
68 |
}, null); |
|
69 |
} catch (MalformedURLException e){ |
|
70 |
throw new RuntimeException("Unexpected URL conversion failure", e); |
|
71 |
} |
|
72 |
} |
|
73 |
||
74 |
} |