13080
|
1 /*
|
|
2 * Copyright (c) 2013, 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 * @test
|
|
26 * @bug 8027572
|
|
27 * @summary class unloading resets profile, method compiled after the profile is first set and before class loading sets unknown bit with not recorded class
|
|
28 * @build B
|
|
29 * @run main/othervm -XX:TypeProfileLevel=222 -XX:-BackgroundCompilation TestProfileConflictClassUnloading
|
|
30 *
|
|
31 */
|
|
32
|
|
33 import java.net.MalformedURLException;
|
|
34 import java.net.URL;
|
|
35 import java.net.URLClassLoader;
|
|
36 import java.nio.file.Paths;
|
|
37
|
|
38 public class TestProfileConflictClassUnloading {
|
|
39 static class A {
|
|
40 }
|
|
41
|
|
42
|
|
43 static void m1(Object o) {
|
|
44 }
|
|
45
|
|
46 static void m2(Object o) {
|
|
47 m1(o);
|
|
48 }
|
|
49
|
|
50 static void m3(A a, boolean do_call) {
|
|
51 if (!do_call) {
|
|
52 return;
|
|
53 }
|
|
54 m2(a);
|
|
55 }
|
|
56
|
|
57 public static ClassLoader newClassLoader() {
|
|
58 try {
|
|
59 return new URLClassLoader(new URL[] {
|
|
60 Paths.get(System.getProperty("test.classes",".")).toUri().toURL(),
|
|
61 }, null);
|
|
62 } catch (MalformedURLException e){
|
|
63 throw new RuntimeException("Unexpected URL conversion failure", e);
|
|
64 }
|
|
65 }
|
|
66
|
|
67 public static void main(String[] args) throws Exception {
|
|
68 ClassLoader loader = newClassLoader();
|
|
69 Object o = loader.loadClass("B").newInstance();
|
|
70 // collect conflicting profiles
|
|
71 for (int i = 0; i < 5000; i++) {
|
|
72 m2(o);
|
|
73 }
|
|
74 // prepare for conflict
|
|
75 A a = new A();
|
|
76 for (int i = 0; i < 5000; i++) {
|
|
77 m3(a, false);
|
|
78 }
|
|
79 // unload class in profile
|
|
80 o = null;
|
|
81 loader = null;
|
|
82 System.gc();
|
|
83 // record the conflict
|
|
84 m3(a, true);
|
|
85 // trigger another GC
|
|
86 System.gc();
|
|
87 }
|
|
88 }
|