1 /*
2 * Copyright (c) 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
25 /*
26 * @test
27 * @summary Dump time resolutiom of constant pool entries.
28 * @requires vm.cds
29 * @requires vm.cds.supports.aot.class.linking
30 * @requires vm.compMode != "Xcomp"
31 * @library /test/lib
32 * @build ResolvedConstants
33 * @run driver jdk.test.lib.helpers.ClassFileInstaller -jar app.jar ResolvedConstantsApp ResolvedConstantsFoo ResolvedConstantsBar
34 * @run driver ResolvedConstants
35 */
36
37 import jdk.test.lib.cds.CDSOptions;
38 import jdk.test.lib.cds.CDSTestUtils;
39 import jdk.test.lib.helpers.ClassFileInstaller;
40
41 public class ResolvedConstants {
42 static final String classList = "ResolvedConstants.classlist";
43 static final String appJar = ClassFileInstaller.getJarPath("app.jar");
44 static final String mainClass = ResolvedConstantsApp.class.getName();
45
46 static boolean aotClassLinking;
47 public static void main(String[] args) throws Exception {
48 test(false);
49 test(true);
50 }
51
52 static void test(boolean testMode) throws Exception {
53 aotClassLinking = testMode;
54 CDSTestUtils.dumpClassList(classList, "-cp", appJar, mainClass)
55 .assertNormalExit(output -> {
56 output.shouldContain("Hello ResolvedConstantsApp");
57 });
58
59 CDSOptions opts = (new CDSOptions())
60 .addPrefix("-XX:ExtraSharedClassListFile=" + classList,
61 "-cp", appJar,
62 "-Xlog:cds+resolve=trace");
63 if (aotClassLinking) {
64 opts.addPrefix("-XX:+AOTClassLinking");
65 } else {
66 opts.addPrefix("-XX:-AOTClassLinking");
67 }
68
69 CDSTestUtils.createArchiveAndCheck(opts)
70 // Class References ---
71
72 // Always resolve reference when a class references itself
73 .shouldMatch(ALWAYS("klass.* ResolvedConstantsApp app => ResolvedConstantsApp app"))
74
75 // Always resolve reference when a class references a super class
76 .shouldMatch(ALWAYS("klass.* ResolvedConstantsApp app => java/lang/Object boot"))
77 .shouldMatch(ALWAYS("klass.* ResolvedConstantsBar app => ResolvedConstantsFoo app"))
78
79 // Always resolve reference when a class references a super interface
80 .shouldMatch(ALWAYS("klass.* ResolvedConstantsApp app => java/lang/Runnable boot"))
81
82 /** premain allows static method pre-resolution
83
84 // Without -XX:+AOTClassLinking:
85 // java/lang/System is in the boot loader but ResolvedConstantsApp is loaded by the app loader.
86 // Even though System is in the vmClasses list, when ResolvedConstantsApp looks up
87 // "java/lang/System" in its ConstantPool, the app loader may not have resolved the System
88 // class yet (i.e., there's no initiaited class entry for System in the app loader's dictionary)
89 .shouldMatch(AOTLINK_ONLY("klass.* ResolvedConstantsApp .*java/lang/System"))
90 **/
91 // Field References ---
92
93 // Always resolve references to fields in the current class or super class(es)
94 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsBar.b:I"))
95 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsBar.a:I"))
96 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsFoo.a:I"))
97 .shouldMatch(ALWAYS("field.* ResolvedConstantsFoo => ResolvedConstantsFoo.a:I"))
98
99 // Resolve field references to child classes ONLY when using -XX:+AOTClassLinking
100 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsFoo => ResolvedConstantsBar.a:I"))
101 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsFoo => ResolvedConstantsBar.b:I"))
102
103 // Resolve field references to unrelated classes ONLY when using -XX:+AOTClassLinking
104 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsApp => ResolvedConstantsBar.a:I"))
105 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsApp => ResolvedConstantsBar.b:I"))
106
107 // Method References ---
108
109 // Should resolve references to own constructor
110 .shouldMatch(ALWAYS("method.* ResolvedConstantsApp ResolvedConstantsApp.<init>:"))
111 // Should resolve references to super constructor
112 .shouldMatch(ALWAYS("method.* ResolvedConstantsApp java/lang/Object.<init>:"))
113
114 // Should resolve interface methods in VM classes
115 .shouldMatch(ALWAYS("interface method .* ResolvedConstantsApp java/lang/Runnable.run:"))
116
117 // Should resolve references to own non-static method (private or public)
118 .shouldMatch(ALWAYS("method.*: ResolvedConstantsBar ResolvedConstantsBar.doBar:"))
119 .shouldMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.privateInstanceCall:"))
120 .shouldMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.publicInstanceCall:"))
121
122 /** premain allows static method pre-resolution
123
124 // Should not resolve references to static method
125 .shouldNotMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.staticCall:"))
126 **/
127
128 // Should resolve references to method in super type
129 .shouldMatch(ALWAYS("method.*: ResolvedConstantsBar ResolvedConstantsFoo.doBar:"))
130
131 // Without -XX:+AOTClassLinking App class cannot resolve references to methods in boot classes:
132 // When the app class loader tries to resolve a class X that's normally loaded by
133 // the boot loader, it's possible for the app class loader to get a different copy of
134 // X (by using MethodHandles.Lookup.defineClass(), etc). Therefore, let's be on
135 // the side of safety and revert all such references.
136 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsApp java/io/PrintStream.println:"))
137 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsBar java/lang/Class.getName:"))
138
139 // Resole resolve methods in unrelated classes ONLY when using -XX:+AOTClassLinking
140 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsApp ResolvedConstantsBar.doit:"))
141
142 // End ---
143 ;
144 }
145
146 static String ALWAYS(String s) {
147 return "cds,resolve.*archived " + s;
148 }
149
150 static String AOTLINK_ONLY(String s) {
151 if (aotClassLinking) {
152 return ALWAYS(s);
153 } else {
154 return "cds,resolve.*reverted " + s;
155 }
156 }
157 }
158
159 class ResolvedConstantsApp implements Runnable {
160 public static void main(String args[]) {
161 System.out.println("Hello ResolvedConstantsApp");
162 ResolvedConstantsApp app = new ResolvedConstantsApp();
163 ResolvedConstantsApp.staticCall();
164 app.privateInstanceCall();
165 app.publicInstanceCall();
166 Object a = app;
167 ((Runnable)a).run();
168
169 ResolvedConstantsFoo foo = new ResolvedConstantsFoo();
170 ResolvedConstantsBar bar = new ResolvedConstantsBar();
171 bar.a ++;
172 bar.b ++;
173 bar.doit();
174 }
175 private static void staticCall() {}
176 private void privateInstanceCall() {}
177 public void publicInstanceCall() {}
178
179 public void run() {}
180 }
181
182 class ResolvedConstantsFoo {
183 int a = 1;
184 void doit() {
185 }
186
187 void doBar(ResolvedConstantsBar bar) {
188 bar.a ++;
189 bar.b ++;
190 }
191 }
192
193 class ResolvedConstantsBar extends ResolvedConstantsFoo {
194 int b = 2;
195 void doit() {
196 System.out.println("Hello ResolvedConstantsBar and " + ResolvedConstantsFoo.class.getName());
197 System.out.println("a = " + a);
198 System.out.println("a = " + ((ResolvedConstantsFoo)this).a);
199 System.out.println("b = " + b);
200
201 doBar(this);
202
203 ((ResolvedConstantsFoo)this).doBar(this);
204 }
205 }