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 {
66 Tester tester = new Tester();
67 tester.run(new String[] {"AOT"} );
68 }
69 }
70
71 static class Tester extends CDSAppTester {
72 public Tester() {
73 super(mainClass);
74 }
75
76 @Override
77 public String classpath(RunMode runMode) {
78 return appJar;
79 }
80
81 @Override
82 public String[] vmArgs(RunMode runMode) {
83 return new String[] {
84 "-Xlog:cds+resolve=trace",
85 };
86 }
87
88 @Override
89 public String[] appCommandLine(RunMode runMode) {
90 return new String[] {
91 mainClass, runMode.name()
92 };
93 }
94
95 @Override
96 public void checkExecution(OutputAnalyzer out, RunMode runMode) {
97 if (isDumping(runMode)) {
98 out.shouldNotMatch("cds,resolve.*archived field.*TestApp.Foo => TestApp.Foo.ShouldBeExcluded.f:I");
99 }
100 }
101 }
102 }
103
104 class TestApp {
105 static volatile Object custInstance;
106 static volatile Object custArrayInstance;
107
108 public static void main(String args[]) throws Exception {
109 // In new workflow, classes from custom loaders are passed from the preimage
110 // to the final image. See ClassPrelinker::record_unregistered_klasses().
111 custInstance = initFromCustomLoader();
112 custArrayInstance = Array.newInstance(custInstance.getClass(), 0);
113 System.out.println(custArrayInstance);
114 System.out.println("Counter = " + Foo.hotSpot());
115 }
116
117 static Object initFromCustomLoader() throws Exception {
118 String path = "cust.jar";
119 URL url = new File(path).toURI().toURL();
120 URL[] urls = new URL[] {url};
121 URLClassLoader urlClassLoader =
122 new URLClassLoader("MyLoader", urls, null);
123 Class c = Class.forName("CustyWithLoop", true, urlClassLoader);
124 return c.newInstance();
125 }
126
127 static class MyInvocationHandler implements InvocationHandler {
128 volatile static int cnt;
129
130 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
131 long start = System.currentTimeMillis();
132 while (System.currentTimeMillis() - start < 20) {
133 cnt += 2;
134 for (int i = 0; i < 1000; i++) {
135 int n = cnt - 2;
136 if (n < 2) {
137 n = 2;
138 }
139 cnt += (i + cnt) % n + cnt % 2;
140 }
141 }
142 return Integer.valueOf(cnt);
143 }
144 }
145
146 static class Foo {
147 volatile static int counter;
148 static Class c = ShouldBeExcluded.class;
149
150 static Map mapProxy = (Map) Proxy.newProxyInstance(
151 Foo.class.getClassLoader(),
152 new Class[] { Map.class },
153 new MyInvocationHandler());
154
155 static int hotSpot() {
156 ShouldBeExcluded s = new ShouldBeExcluded();
157 Bar b = new Bar();
158
159 long start = System.currentTimeMillis();
160 while (System.currentTimeMillis() - start < 1000) {
161 lambdaHotSpot();
162 s.hotSpot2();
163 b.hotSpot3();
164
165 // In JDK mainline, generated proxy classes are excluded from the AOT cache.
166 // In Leyden/premain, generated proxy classes included. The following code should
167 // work with either repos.
168 Integer i = (Integer)mapProxy.get(null);
169 counter += i.intValue();
170
171 if (custInstance != null) {
172 // Classes loaded by custom loaders are included included in the AOT cache
173 // but their array classes are excluded.
174 counter += custInstance.equals(null) ? 1 : 2;
175 }
176
177 if (custArrayInstance != null) {
178 if ((counter % 3) == 0) {
179 counter += (custArrayInstance instanceof String) ? 0 : 1;
180 } else {
181 counter += (custArrayInstance instanceof Object) ? 0 : 1;
182 }
183 }
184 }
185
186 return counter + s.m() + s.f + b.m() + b.f;
187 }
188
189 static void f() {
190 if (counter % 2 == 1) {
191 counter ++;
192 }
193 }
194
195 // Generated Lambda classes should be excluded from CDS preimage.
196 static void lambdaHotSpot() {
197 long start = System.currentTimeMillis();
198 while (System.currentTimeMillis() - start < 20) {
199 doit(() -> counter ++ );
200 }
201 }
202
203 static void doit(Runnable r) {
204 r.run();
205 }
206
207 // All subclasses of jdk.jfr.Event are excluded from the CDS archive.
208 static class ShouldBeExcluded extends jdk.jfr.Event {
209 int f = (int)(System.currentTimeMillis()) + 123;
210 int m() {
211 return f + 456;
212 }
213
214 void hotSpot2() {
215 long start = System.currentTimeMillis();
216 while (System.currentTimeMillis() - start < 20) {
217 for (int i = 0; i < 50000; i++) {
218 counter += i;
219 }
220 f();
221 }
222 }
223 }
224
225 static class Bar {
226 int f = (int)(System.currentTimeMillis()) + 123;
227 int m() {
228 return f + 456;
229 }
230
231 void hotSpot3() {
232 long start = System.currentTimeMillis();
233 while (System.currentTimeMillis() - start < 20) {
234 for (int i = 0; i < 50000; i++) {
235 counter += i;
236 }
237 f();
238 }
239 }
240 }
241 }
242 }
243