1 /*
2 * Copyright (c) 2022, 2024, 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 import java.lang.reflect.Method;
25 import jdk.test.lib.Asserts;
26 import jdk.test.whitebox.WhiteBox;
27
28 import jdk.internal.vm.annotation.ImplicitlyConstructible;
29 import jdk.internal.vm.annotation.LooselyConsistentValue;
30 import jdk.internal.vm.annotation.NullRestricted;
31
32 /*
33 * @test
34 * @key randomness
35 * @bug 8280006
36 * @summary Test that field flattening works as expected if value classes of
37 * holder and field were loaded by different class loaders (bootstrap + app).
38 * @library /test/lib /
39 * @requires (os.simpleArch == "x64" | os.simpleArch == "aarch64")
40 * @enablePreview
41 * @modules java.base/jdk.internal.value
42 * java.base/jdk.internal.vm.annotation
43 * @compile ValueOnBootclasspath.java InstallBootstrapClasses.java TestBootClassloader.java
44 * @build jdk.test.whitebox.WhiteBox
45 * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
46 * @run main/othervm InstallBootstrapClasses
47 * @run main/othervm -Xbootclasspath/a:boot -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
48 * -Xbatch -XX:-TieredCompilation -XX:CompileCommand=compileonly,TestBootClassloader::test*
49 * -XX:CompileCommand=inline,*::get* TestBootClassloader
50 */
51
52 public class TestBootClassloader {
53 private static final WhiteBox WB = WhiteBox.getWhiteBox();
54 private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4;
55
56 @ImplicitlyConstructible
57 @LooselyConsistentValue
58 static value class Wrapper1 {
59 @NullRestricted
60 ValueOnBootclasspath val; // Type will be loaded by boot classloader
61
62 public Wrapper1(ValueOnBootclasspath val) {
63 this.val = val;
64 }
65
66 Object get() {
67 return val.get();
68 }
69 }
70
71 @ImplicitlyConstructible
72 @LooselyConsistentValue
73 static value class Wrapper2 {
74 @NullRestricted
75 Wrapper1 val;
76
77 public Wrapper2(Wrapper1 val) {
78 this.val = val;
79 }
80
81 Object get() {
82 return val.get();
83 }
84 }
85
86 static Object test1(Wrapper1 w) {
87 return w.get();
88 }
89
90 static Object test2(Wrapper2 w) {
91 return w.get();
92 }
93
94 public static void main(String[] args) throws Exception {
95 Wrapper1 wrapper1 = new Wrapper1(new ValueOnBootclasspath());
96 Wrapper2 wrapper2 = new Wrapper2(wrapper1);
97 for (int i = 0; i < 50_000; ++i) {
98 test1(wrapper1);
99 test2(wrapper2);
100 }
101 Method method = TestBootClassloader.class.getDeclaredMethod("test1", Wrapper1.class);
102 Asserts.assertTrue(WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false), "Test1 method not compilable");
103 Asserts.assertTrue(WB.isMethodCompiled(method), "Test1 method not compiled");
104
105 method = TestBootClassloader.class.getDeclaredMethod("test2", Wrapper2.class);
106 Asserts.assertTrue(WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false), "Test2 method not compilable");
107 Asserts.assertTrue(WB.isMethodCompiled(method), "Test2 method not compiled");
108 }
109 }