1 /*
2 * Copyright (c) 2024, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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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).
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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,
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
24
25 /*
26 * @test id=static
27 * @summary Dump time resolution of constant pool entries (Static CDS archive).
28 * @requires vm.cds
29 * @requires vm.cds.supports.aot.class.linking
30 * @requires vm.compMode != "Xcomp"
31 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds/test-classes/
32 * @build OldProvider OldClass OldConsumer StringConcatTestOld
33 * @build ResolvedConstants
34 * @run driver jdk.test.lib.helpers.ClassFileInstaller -jar app.jar
35 * ResolvedConstantsApp ResolvedConstantsFoo ResolvedConstantsBar
36 * MyInterface InterfaceWithClinit NormalClass
37 * OldProvider OldClass OldConsumer SubOfOldClass
38 * StringConcatTest StringConcatTestOld
39 * @run driver ResolvedConstants STATIC
40 */
41
42 /*
43 * @test id=dynamic
44 * @summary Dump time resolution of constant pool entries (Dynamic CDS archive)
45 * @requires vm.cds
46 * @requires vm.cds.supports.aot.class.linking
47 * @requires vm.compMode != "Xcomp"
48 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds/test-classes/
49 * @build OldProvider OldClass OldConsumer StringConcatTestOld
50 * @build ResolvedConstants
51 * @run driver jdk.test.lib.helpers.ClassFileInstaller -jar app.jar
52 * ResolvedConstantsApp ResolvedConstantsFoo ResolvedConstantsBar
53 * MyInterface InterfaceWithClinit NormalClass
54 * OldProvider OldClass OldConsumer SubOfOldClass
55 * StringConcatTest StringConcatTestOld
56 * @build jdk.test.whitebox.WhiteBox
57 * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
58 * @run main/othervm -Dcds.app.tester.workflow=DYNAMIC -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. ResolvedConstants DYNAMIC
59 */
60
61 import java.util.function.Consumer;
62 import jdk.test.lib.cds.CDSOptions;
63 import jdk.test.lib.cds.CDSTestUtils;
64 import jdk.test.lib.cds.SimpleCDSAppTester;
65 import jdk.test.lib.helpers.ClassFileInstaller;
66 import jdk.test.lib.process.OutputAnalyzer;
67
68 public class ResolvedConstants {
69 static final String classList = "ResolvedConstants.classlist";
70 static final String appJar = ClassFileInstaller.getJarPath("app.jar");
71 static final String mainClass = ResolvedConstantsApp.class.getName();
72
73 static boolean aotClassLinking;
74 public static void main(String[] args) throws Exception {
75 test(args, false);
76 test(args, true);
77 }
78
79 static void test(String[] args, boolean testMode) throws Exception {
80 aotClassLinking = testMode;
81
82 SimpleCDSAppTester.of("ResolvedConstantsApp" + (aotClassLinking ? "1" : "0"))
83 .addVmArgs(aotClassLinking ? "-XX:+AOTClassLinking" : "-XX:-AOTClassLinking",
84 "-Xlog:cds+resolve=trace",
85 "-Xlog:cds+class=debug")
86 .classpath(appJar)
87 .appCommandLine(mainClass)
88 .setAssemblyChecker((OutputAnalyzer out) -> {
89 checkAssemblyOutput(args, out);
90 })
91 .setProductionChecker((OutputAnalyzer out) -> {
92 out.shouldContain("Hello ResolvedConstantsApp");
93 })
94 .run(args);
95 }
96
97 static void checkAssemblyOutput(String args[], OutputAnalyzer out) {
98 testGroup("Class References", out)
99 // Always resolve reference when a class references itself
100 .shouldMatch(ALWAYS("klass.* ResolvedConstantsApp app => ResolvedConstantsApp app"))
101
102 // Always resolve reference when a class references a super class
103 .shouldMatch(ALWAYS("klass.* ResolvedConstantsApp app => java/lang/Object boot"))
104 .shouldMatch(ALWAYS("klass.* ResolvedConstantsBar app => ResolvedConstantsFoo app"))
105
106 // Always resolve reference when a class references a super interface
107 .shouldMatch(ALWAYS("klass.* ResolvedConstantsApp app => java/lang/Runnable boot"))
108
109 // Without -XX:+AOTClassLinking:
110 // java/lang/System is in the boot loader but ResolvedConstantsApp is loaded by the app loader.
111 // Even though System is in the vmClasses list, when ResolvedConstantsApp looks up
112 // "java/lang/System" in its ConstantPool, the app loader may not have resolved the System
113 // class yet (i.e., there's no initiaited class entry for System in the app loader's dictionary)
114 .shouldMatch(AOTLINK_ONLY("klass.* ResolvedConstantsApp .*java/lang/System"));
115
116 testGroup("Field References", out)
117 // Always resolve references to fields in the current class or super class(es)
118 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsBar.b:I"))
119 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsBar.a:I"))
120 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsFoo.a:I"))
121 .shouldMatch(ALWAYS("field.* ResolvedConstantsFoo => ResolvedConstantsFoo.a:I"))
122
123 // Resolve field references to child classes ONLY when using -XX:+AOTClassLinking
124 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsFoo => ResolvedConstantsBar.a:I"))
125 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsFoo => ResolvedConstantsBar.b:I"))
126
127 // Resolve field references to unrelated classes ONLY when using -XX:+AOTClassLinking
128 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsApp => ResolvedConstantsBar.a:I"))
129 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsApp => ResolvedConstantsBar.b:I"));
130
131 if (args[0].equals("DYNAMIC")) {
132 // AOT resolution of CP methods/indy references is not implemeted
133 return;
134 }
135
136 testGroup("Method References", out)
137 // Should resolve references to own constructor
138 .shouldMatch(ALWAYS("method.* ResolvedConstantsApp ResolvedConstantsApp.<init>:"))
139 // Should resolve references to super constructor
140 .shouldMatch(ALWAYS("method.* ResolvedConstantsApp java/lang/Object.<init>:"))
141
142 // Should resolve interface methods in VM classes
143 .shouldMatch(ALWAYS("interface method .* ResolvedConstantsApp java/lang/Runnable.run:"))
144
145 // Should resolve references to own non-static method (private or public)
146 .shouldMatch(ALWAYS("method.*: ResolvedConstantsBar ResolvedConstantsBar.doBar:"))
147 .shouldMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.privateInstanceCall:"))
148 .shouldMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.publicInstanceCall:"))
149
150 // Should not resolve references to static method
151 .shouldNotMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.staticCall:"))
152
153 // Should resolve references to method in super type
154 .shouldMatch(ALWAYS("method.*: ResolvedConstantsBar ResolvedConstantsFoo.doBar:"))
155
156 // Without -XX:+AOTClassLinking App class cannot resolve references to methods in boot classes:
157 // When the app class loader tries to resolve a class X that's normally loaded by
158 // the boot loader, it's possible for the app class loader to get a different copy of
159 // X (by using MethodHandles.Lookup.defineClass(), etc). Therefore, let's be on
160 // the side of safety and revert all such references.
161 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsApp java/io/PrintStream.println:"))
162 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsBar java/lang/Class.getName:"))
163
164 // Resole resolve methods in unrelated classes ONLY when using -XX:+AOTClassLinking
165 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsApp ResolvedConstantsBar.doit:"))
166
167 // End ---
168 ;
169
170
171 // Indy References ---
172 if (aotClassLinking) {
173 testGroup("Indy References", out)
174 .shouldContain("Cannot aot-resolve Lambda proxy because OldConsumer is excluded")
175 .shouldContain("Cannot aot-resolve Lambda proxy because OldProvider is excluded")
176 .shouldContain("Cannot aot-resolve Lambda proxy because OldClass is excluded")
177 .shouldContain("Cannot aot-resolve Lambda proxy of interface type InterfaceWithClinit")
178 .shouldMatch("klasses.* app *NormalClass[$][$]Lambda/.* hidden aot-linked inited")
179 .shouldNotMatch("klasses.* app *SubOfOldClass[$][$]Lambda/")
180 .shouldMatch("archived indy *CP entry.*StringConcatTest .* => java/lang/invoke/StringConcatFactory.makeConcatWithConstants")
181 .shouldNotMatch("archived indy *CP entry.*StringConcatTestOld .* => java/lang/invoke/StringConcatFactory.makeConcatWithConstants");
182 }
183 }
184
185 static String ALWAYS(String s) {
186 return "cds,resolve.*archived " + s;
187 }
188
189 static String AOTLINK_ONLY(String s) {
190 if (aotClassLinking) {
191 return ALWAYS(s);
192 } else {
193 return "cds,resolve.*reverted " + s;
194 }
195 }
196
197 static OutputAnalyzer testGroup(String name, OutputAnalyzer out) {
198 System.out.println("Checking for: " + name);
199 return out;
200 }
201 }
202
203 class ResolvedConstantsApp implements Runnable {
204 public static void main(String args[]) {
205 System.out.println("Hello ResolvedConstantsApp");
206 ResolvedConstantsApp app = new ResolvedConstantsApp();
207 ResolvedConstantsApp.staticCall();
208 app.privateInstanceCall();
209 app.publicInstanceCall();
210 Object a = app;
211 ((Runnable)a).run();
212
213 ResolvedConstantsFoo foo = new ResolvedConstantsFoo();
214 ResolvedConstantsBar bar = new ResolvedConstantsBar();
215 bar.a ++;
216 bar.b ++;
217 bar.doit();
218
219 testLambda();
220 StringConcatTest.test();
221 StringConcatTestOld.main(null);
222 }
223 private static void staticCall() {}
224 private void privateInstanceCall() {}
225 public void publicInstanceCall() {}
226
227 public void run() {}
228
229 static void testLambda() {
230 // The functional type used in the Lambda is an excluded class
231 OldProvider op = () -> {
232 return null;
233 };
234
235 // A captured value is an instance of an excluded Class
236 OldClass c = new OldClass();
237 Runnable r = () -> {
238 System.out.println("Test 1 " + c);
239 };
240 r.run();
241
242 // The functional interface accepts an argument that's an excluded class
243 MyInterface i = (o) -> {
244 System.out.println("Test 2 " + o);
245 };
246 i.dispatch(c);
247
248 // Method reference to old class
249 OldConsumer oldConsumer = new OldConsumer();
250 Consumer<String> wrapper = oldConsumer::consumeString;
251 wrapper.accept("Hello");
252
253 // Lambda of interfaces that have <clinit> are not archived.
254 InterfaceWithClinit i2 = () -> {
255 System.out.println("Test 3");
256 };
257 i2.dispatch();
258
259 // These two classes have almost identical source code, but
260 // only NormalClass should have its lambdas pre-resolved.
261 // SubOfOldClass is "old" -- it should be excluded from the AOT cache,
262 // so none of its lambda proxies should be cached
263 NormalClass.testLambda(); // Lambda proxy should be cached
264 SubOfOldClass.testLambda(); // Lambda proxy shouldn't be cached
265 }
266 }
267
268 class StringConcatTest {
269 static void test() {
270 System.out.println("StringConcatTest <concat> " + new StringConcatTest()); // concat should be aot-resolved
271 }
272 }
273
274 /* see StringConcatTestOld.jasm
275
276 class StringConcatTestOld {
277 public static void main(String args[]) {
278 // concat should be aot-resolved => the MethodType refers to an old class
279 System.out.println("StringConcatTestOld <concat> " + new OldConsumer());
280 }
281 }
282 */
283
284 class NormalClass {
285 static void testLambda() {
286 Runnable r = () -> {
287 System.out.println("NormalClass testLambda");
288 };
289 r.run();
290 }
291 }
292
293 class SubOfOldClass extends OldClass {
294 static void testLambda() {
295 Runnable r = () -> {
296 System.out.println("SubOfOldClass testLambda");
297 };
298 r.run();
299 }
300 }
301
302 interface MyInterface {
303 void dispatch(OldClass c);
304 }
305
306 interface InterfaceWithClinit {
307 static final long X = System.currentTimeMillis();
308 void dispatch();
309 default long dummy() { return X; }
310 }
311
312 class ResolvedConstantsFoo {
313 int a = 1;
314 void doit() {
315 }
316
317 void doBar(ResolvedConstantsBar bar) {
318 bar.a ++;
319 bar.b ++;
320 }
321 }
322
323 class ResolvedConstantsBar extends ResolvedConstantsFoo {
324 int b = 2;
325 void doit() {
326 System.out.println("Hello ResolvedConstantsBar and " + ResolvedConstantsFoo.class.getName());
327 System.out.println("a = " + a);
328 System.out.println("a = " + ((ResolvedConstantsFoo)this).a);
329 System.out.println("b = " + b);
330
331 doBar(this);
332
333 ((ResolvedConstantsFoo)this).doBar(this);
334 }
335 }