1 /*
2 * Copyright (c) 2023, 2025, 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 Test how various AOT optimizations handle classes that are excluded from the AOT cache.
28 * @requires vm.cds.write.archived.java.heap
29 * @comment work around JDK-8345635
30 * @requires !vm.jvmci.enabled
31 * @library /test/jdk/lib/testlibrary /test/lib
32 * /test/hotspot/jtreg/runtime/cds/appcds/aotCache/test-classes
33 * @build ExcludedClasses CustyWithLoop
34 * @run driver jdk.test.lib.helpers.ClassFileInstaller -jar app.jar
35 * TestApp
36 * TestApp$Foo
37 * TestApp$Foo$Bar
38 * TestApp$Foo$ShouldBeExcluded
39 * TestApp$MyInvocationHandler
40 * @run driver jdk.test.lib.helpers.ClassFileInstaller -jar cust.jar
41 * CustyWithLoop
42 * @run driver ExcludedClasses
43 */
44
45 import java.io.File;
46 import java.lang.reflect.Array;
47 import java.lang.reflect.InvocationHandler;
48 import java.lang.reflect.Method;
49 import java.lang.reflect.Proxy;
50 import java.net.URL;
51 import java.net.URLClassLoader;
52 import java.security.ProtectionDomain;
53 import java.util.Map;
54
55 import jdk.jfr.Event;
56 import jdk.test.lib.cds.CDSAppTester;
57 import jdk.test.lib.helpers.ClassFileInstaller;
58 import jdk.test.lib.process.OutputAnalyzer;
59
60 public class ExcludedClasses {
61 static final String appJar = ClassFileInstaller.getJarPath("app.jar");
62 static final String mainClass = "TestApp";
63
64 public static void main(String[] args) throws Exception {
65 Tester tester = new Tester();
66 tester.runAOTWorkflow();
67 }
68
69 static class Tester extends CDSAppTester {
70 public Tester() {
71 super(mainClass);
72 }
73
74 @Override
75 public String classpath(RunMode runMode) {
76 return appJar;
77 }
78
79 @Override
80 public String[] vmArgs(RunMode runMode) {
81 return new String[] {
82 "-Xlog:cds+resolve=trace",
83 };
84 }
85
86 @Override
87 public String[] appCommandLine(RunMode runMode) {
88 return new String[] {
89 mainClass, runMode.name()
90 };
91 }
92
93 @Override
94 public void checkExecution(OutputAnalyzer out, RunMode runMode) {
95 if (isDumping(runMode)) {
96 out.shouldNotMatch("cds,resolve.*archived field.*TestApp.Foo => TestApp.Foo.ShouldBeExcluded.f:I");
97 }
98 }
99 }
100 }
101
102 class TestApp {
103 static volatile Object custInstance;
104 static volatile Object custArrayInstance;
105
106 public static void main(String args[]) throws Exception {
107 // In new workflow, classes from custom loaders are passed from the preimage
108 // to the final image. See ClassPrelinker::record_unregistered_klasses().
109 custInstance = initFromCustomLoader();
110 custArrayInstance = Array.newInstance(custInstance.getClass(), 0);
111 System.out.println(custArrayInstance);
112 System.out.println("Counter = " + Foo.hotSpot());
113 }
114
115 static Object initFromCustomLoader() throws Exception {
116 String path = "cust.jar";
117 URL url = new File(path).toURI().toURL();
118 URL[] urls = new URL[] {url};
119 URLClassLoader urlClassLoader =
120 new URLClassLoader("MyLoader", urls, null);
121 Class c = Class.forName("CustyWithLoop", true, urlClassLoader);
122 return c.newInstance();
123 }
124
125 static class MyInvocationHandler implements InvocationHandler {
126 volatile static int cnt;
127
128 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
129 long start = System.currentTimeMillis();
130 while (System.currentTimeMillis() - start < 20) {
131 cnt += 2;
132 for (int i = 0; i < 1000; i++) {
133 int n = cnt - 2;
134 if (n < 2) {
135 n = 2;
136 }
137 cnt += (i + cnt) % n + cnt % 2;
138 }
139 }
140 return Integer.valueOf(cnt);
141 }
142 }
143
144 static class Foo {
145 volatile static int counter;
146 static Class c = ShouldBeExcluded.class;
147
148 static Map mapProxy = (Map) Proxy.newProxyInstance(
149 Foo.class.getClassLoader(),
150 new Class[] { Map.class },
151 new MyInvocationHandler());
152
153 static int hotSpot() {
154 ShouldBeExcluded s = new ShouldBeExcluded();
155 Bar b = new Bar();
156
157 long start = System.currentTimeMillis();
158 while (System.currentTimeMillis() - start < 1000) {
159 lambdaHotSpot();
160 s.hotSpot2();
161 b.hotSpot3();
162
163 // In JDK mainline, generated proxy classes are excluded from the AOT cache.
164 // In Leyden/premain, generated proxy classes included. The following code should
165 // work with either repos.
166 Integer i = (Integer)mapProxy.get(null);
167 counter += i.intValue();
168
169 if (custInstance != null) {
170 // Classes loaded by custom loaders are included included in the AOT cache
171 // but their array classes are excluded.
172 counter += custInstance.equals(null) ? 1 : 2;
173 }
174
175 if (custArrayInstance != null) {
176 if ((counter % 3) == 0) {
177 counter += (custArrayInstance instanceof String) ? 0 : 1;
178 } else {
179 counter += (custArrayInstance instanceof Object) ? 0 : 1;
180 }
181 }
182 }
183
184 return counter + s.m() + s.f + b.m() + b.f;
185 }
186
187 static void f() {
188 if (counter % 2 == 1) {
189 counter ++;
190 }
191 }
192
193 // Generated Lambda classes should be excluded from CDS preimage.
194 static void lambdaHotSpot() {
195 long start = System.currentTimeMillis();
196 while (System.currentTimeMillis() - start < 20) {
197 doit(() -> counter ++ );
198 }
199 }
200
201 static void doit(Runnable r) {
202 r.run();
203 }
204
205 // All subclasses of jdk.jfr.Event are excluded from the CDS archive.
206 static class ShouldBeExcluded extends jdk.jfr.Event {
207 int f = (int)(System.currentTimeMillis()) + 123;
208 int m() {
209 return f + 456;
210 }
211
212 void hotSpot2() {
213 long start = System.currentTimeMillis();
214 while (System.currentTimeMillis() - start < 20) {
215 for (int i = 0; i < 50000; i++) {
216 counter += i;
217 }
218 f();
219 }
220 }
221 }
222
223 static class Bar {
224 int f = (int)(System.currentTimeMillis()) + 123;
225 int m() {
226 return f + 456;
227 }
228
229 void hotSpot3() {
230 long start = System.currentTimeMillis();
231 while (System.currentTimeMillis() - start < 20) {
232 for (int i = 0; i < 50000; i++) {
233 counter += i;
234 }
235 f();
236 }
237 }
238 }
239 }
240 }
241