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.InvocationHandler;
47 import java.lang.reflect.Method;
48 import java.lang.reflect.Proxy;
49 import java.net.URL;
50 import java.net.URLClassLoader;
51 import java.security.ProtectionDomain;
52 import java.util.Map;
53
54 import jdk.jfr.Event;
55 import jdk.test.lib.cds.CDSAppTester;
56 import jdk.test.lib.helpers.ClassFileInstaller;
57 import jdk.test.lib.process.OutputAnalyzer;
58
59 public class ExcludedClasses {
60 static final String appJar = ClassFileInstaller.getJarPath("app.jar");
61 static final String mainClass = "TestApp";
62
63 public static void main(String[] args) throws Exception {
64 {
65 Tester tester = new Tester();
66 tester.run(new String[] {"AOT"} );
67 }
68 {
69 Tester tester = new Tester();
70 tester.run(new String[] {"LEYDEN"} );
71 }
72 }
73
74 static class Tester extends CDSAppTester {
75 public Tester() {
76 super(mainClass);;
77 }
78
79 @Override
80 public String classpath(RunMode runMode) {
81 return appJar;
82 }
83
84 @Override
85 public String[] vmArgs(RunMode runMode) {
86 return new String[] {
87 "-Xlog:cds+resolve=trace",
88 };
89 }
90
91 @Override
92 public String[] appCommandLine(RunMode runMode) {
93 return new String[] {
94 mainClass, runMode.name()
95 };
96 }
97
98 @Override
99 public void checkExecution(OutputAnalyzer out, RunMode runMode) {
100 switch (runMode) {
101 case RunMode.TRAINING:
102 case RunMode.TRAINING0:
103 case RunMode.DUMP_STATIC:
104 out.shouldNotMatch("cds,resolve.*archived field.*TestApp.Foo => TestApp.Foo.ShouldBeExcluded.f:I");
105 }
106 }
107 }
108 }
109
110 class TestApp {
111 static volatile Object custInstance;
112 static volatile Object custArrayInstance;
113
114 public static void main(String args[]) throws Exception {
115 // In new workflow, classes from custom loaders are passed from the preimage
116 // to the final image. See ClassPrelinker::record_unregistered_klasses().
117 custInstance = initFromCustomLoader();
118 custArrayInstance = java.lang.reflect.Array.newInstance(custInstance.getClass(), 0);
119 System.out.println(custArrayInstance);
120 System.out.println("Counter = " + Foo.hotSpot());
121 }
122
123 static Object initFromCustomLoader() throws Exception {
124 String path = "cust.jar";
125 URL url = new File(path).toURI().toURL();
126 URL[] urls = new URL[] {url};
127 URLClassLoader urlClassLoader =
128 new URLClassLoader("MyLoader", urls, null);
129 Class c = Class.forName("CustyWithLoop", true, urlClassLoader);
130 return c.newInstance();
131 }
132
133 static class MyInvocationHandler implements InvocationHandler {
134 volatile static int cnt;
135
136 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
137 long start = System.currentTimeMillis();
138 while (System.currentTimeMillis() - start < 20) {
139 cnt += 2;
140 for (int i = 0; i < 1000; i++) {
141 int n = cnt - 2;
142 if (n < 2) {
143 n = 2;
144 }
145 cnt += (i + cnt) % n + cnt % 2;
146 }
147 }
148 return Integer.valueOf(cnt);
149 }
150 }
151
152 static class Foo {
153 volatile static int counter;
154 static Class c = ShouldBeExcluded.class;
155
156 static Map mapProxy = (Map) Proxy.newProxyInstance(
157 Foo.class.getClassLoader(),
158 new Class[] { Map.class },
159 new MyInvocationHandler());
160
161 static int hotSpot() {
162 ShouldBeExcluded s = new ShouldBeExcluded();
163 Bar b = new Bar();
164
165 long start = System.currentTimeMillis();
166 while (System.currentTimeMillis() - start < 1000) {
167 lambdaHotSpot();
168 s.hotSpot2();
169 b.hotSpot3();
170
171 // In JDK mainline, generated proxy classes are excluded from the AOT cache.
172 // In Leyden/premain, generated proxy classes included. The following code should
173 // work with either repos.
174 Integer i = (Integer)mapProxy.get(null);
175 counter += i.intValue();
176
177 if (custInstance != null) {
178 // Classes loaded by custom loaders are included included in the AOT cache
179 // but their array classes are excluded.
180 counter += custInstance.equals(null) ? 1 : 2;
181 }
182
183 if (custArrayInstance != null) {
184 if ((counter % 3) == 0) {
185 counter += (custArrayInstance instanceof String) ? 0 : 1;
186 } else {
187 counter += (custArrayInstance instanceof Object) ? 0 : 1;
188 }
189 }
190 }
191
192 return counter + s.m() + s.f + b.m() + b.f;
193 }
194
195 static void f() {
196 if (counter % 2 == 1) {
197 counter ++;
198 }
199 }
200
201 // Generated Lambda classes should be excluded from CDS preimage.
202 static void lambdaHotSpot() {
203 long start = System.currentTimeMillis();
204 while (System.currentTimeMillis() - start < 20) {
205 doit(() -> {
206 counter ++;
207 });
208 }
209 }
210
211 static void doit(Runnable r) {
212 r.run();
213 }
214
215 // All subclasses of jdk.jfr.Event are excluded from the CDS archive.
216 static class ShouldBeExcluded extends jdk.jfr.Event {
217 int f = (int)(System.currentTimeMillis()) + 123;
218 int m() {
219 return f + 456;
220 }
221
222 void hotSpot2() {
223 long start = System.currentTimeMillis();
224 while (System.currentTimeMillis() - start < 20) {
225 for (int i = 0; i < 50000; i++) {
226 counter += i;
227 }
228 f();
229 }
230 }
231 }
232
233 static class Bar {
234 int f = (int)(System.currentTimeMillis()) + 123;
235 int m() {
236 return f + 456;
237 }
238
239 void hotSpot3() {
240 long start = System.currentTimeMillis();
241 while (System.currentTimeMillis() - start < 20) {
242 for (int i = 0; i < 50000; i++) {
243 counter += i;
244 }
245 f();
246 }
247 }
248 }
249 }
250 }
251