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.
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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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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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 /** premain allows static method pre-resolution
110 // Without -XX:+AOTClassLinking:
111 // java/lang/System is in the boot loader but ResolvedConstantsApp is loaded by the app loader.
112 // Even though System is in the vmClasses list, when ResolvedConstantsApp looks up
113 // "java/lang/System" in its ConstantPool, the app loader may not have resolved the System
114 // class yet (i.e., there's no initiaited class entry for System in the app loader's dictionary)
115 .shouldMatch(AOTLINK_ONLY("klass.* ResolvedConstantsApp .*java/lang/System"))
116 **/
117 ;
118
119 testGroup("Field References", out)
120 // Always resolve references to fields in the current class or super class(es)
121 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsBar.b:I"))
122 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsBar.a:I"))
123 .shouldMatch(ALWAYS("field.* ResolvedConstantsBar => ResolvedConstantsFoo.a:I"))
124 .shouldMatch(ALWAYS("field.* ResolvedConstantsFoo => ResolvedConstantsFoo.a:I"))
125
126 // Resolve field references to child classes ONLY when using -XX:+AOTClassLinking
127 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsFoo => ResolvedConstantsBar.a:I"))
128 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsFoo => ResolvedConstantsBar.b:I"))
129
130 // Resolve field references to unrelated classes ONLY when using -XX:+AOTClassLinking
131 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsApp => ResolvedConstantsBar.a:I"))
132 .shouldMatch(AOTLINK_ONLY("field.* ResolvedConstantsApp => ResolvedConstantsBar.b:I"));
133
134 if (args[0].equals("DYNAMIC")) {
135 // AOT resolution of CP methods/indy references is not implemeted
136 return;
137 }
138
139 testGroup("Method References", out)
140 // Should resolve references to own constructor
141 .shouldMatch(ALWAYS("method.* ResolvedConstantsApp ResolvedConstantsApp.<init>:"))
142 // Should resolve references to super constructor
143 .shouldMatch(ALWAYS("method.* ResolvedConstantsApp java/lang/Object.<init>:"))
144
145 // Should resolve interface methods in VM classes
146 .shouldMatch(ALWAYS("interface method .* ResolvedConstantsApp java/lang/Runnable.run:"))
147
148 // Should resolve references to own non-static method (private or public)
149 .shouldMatch(ALWAYS("method.*: ResolvedConstantsBar ResolvedConstantsBar.doBar:"))
150 .shouldMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.privateInstanceCall:"))
151 .shouldMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.publicInstanceCall:"))
152 /** premain allows static method pre-resolution
153 // Should not resolve references to static method
154 .shouldNotMatch(ALWAYS("method.*: ResolvedConstantsApp ResolvedConstantsApp.staticCall:"))
155 **/
156
157 // Should resolve references to method in super type
158 .shouldMatch(ALWAYS("method.*: ResolvedConstantsBar ResolvedConstantsFoo.doBar:"))
159
160 // Without -XX:+AOTClassLinking App class cannot resolve references to methods in boot classes:
161 // When the app class loader tries to resolve a class X that's normally loaded by
162 // the boot loader, it's possible for the app class loader to get a different copy of
163 // X (by using MethodHandles.Lookup.defineClass(), etc). Therefore, let's be on
164 // the side of safety and revert all such references.
165 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsApp java/io/PrintStream.println:"))
166 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsBar java/lang/Class.getName:"))
167
168 // Resole resolve methods in unrelated classes ONLY when using -XX:+AOTClassLinking
169 .shouldMatch(AOTLINK_ONLY("method.*: ResolvedConstantsApp ResolvedConstantsBar.doit:"))
170
171 // End ---
172 ;
173
174
175 // Indy References ---
176 if (aotClassLinking) {
177 /** premain allows Old classes to be linked
178 testGroup("Indy References", out)
179 .shouldContain("Cannot aot-resolve Lambda proxy because OldConsumer is excluded")
180 .shouldContain("Cannot aot-resolve Lambda proxy because OldProvider is excluded")
181 .shouldContain("Cannot aot-resolve Lambda proxy because OldClass is excluded")
182 .shouldContain("Cannot aot-resolve Lambda proxy of interface type InterfaceWithClinit")
183 .shouldMatch("klasses.* app *NormalClass[$][$]Lambda/.* hidden aot-linked inited")
184 .shouldNotMatch("klasses.* app *SubOfOldClass[$][$]Lambda/")
185 .shouldMatch("archived indy *CP entry.*StringConcatTest .* => java/lang/invoke/StringConcatFactory.makeConcatWithConstants")
186 .shouldNotMatch("archived indy *CP entry.*StringConcatTestOld .* => java/lang/invoke/StringConcatFactory.makeConcatWithConstants");
187 **/
188 }
189 }
190
191 static String ALWAYS(String s) {
192 return "cds,resolve.*archived " + s;
193 }
194
195 static String AOTLINK_ONLY(String s) {
196 if (aotClassLinking) {
197 return ALWAYS(s);
198 } else {
199 return "cds,resolve.*reverted " + s;
200 }
201 }
202
203 static OutputAnalyzer testGroup(String name, OutputAnalyzer out) {
204 System.out.println("Checking for: " + name);
205 return out;
206 }
207 }
208
209 class ResolvedConstantsApp implements Runnable {
210 public static void main(String args[]) {
211 System.out.println("Hello ResolvedConstantsApp");
212 ResolvedConstantsApp app = new ResolvedConstantsApp();
213 ResolvedConstantsApp.staticCall();
214 app.privateInstanceCall();
215 app.publicInstanceCall();
216 Object a = app;
217 ((Runnable)a).run();
218
219 ResolvedConstantsFoo foo = new ResolvedConstantsFoo();
220 ResolvedConstantsBar bar = new ResolvedConstantsBar();
221 bar.a ++;
222 bar.b ++;
223 bar.doit();
224
225 testLambda();
226 StringConcatTest.test();
227 StringConcatTestOld.main(null);
228 }
229 private static void staticCall() {}
230 private void privateInstanceCall() {}
231 public void publicInstanceCall() {}
232
233 public void run() {}
234
235 static void testLambda() {
236 // The functional type used in the Lambda is an excluded class
237 OldProvider op = () -> {
238 return null;
239 };
240
241 // A captured value is an instance of an excluded Class
242 OldClass c = new OldClass();
243 Runnable r = () -> {
244 System.out.println("Test 1 " + c);
245 };
246 r.run();
247
248 // The functional interface accepts an argument that's an excluded class
249 MyInterface i = (o) -> {
250 System.out.println("Test 2 " + o);
251 };
252 i.dispatch(c);
253
254 // Method reference to old class
255 OldConsumer oldConsumer = new OldConsumer();
256 Consumer<String> wrapper = oldConsumer::consumeString;
257 wrapper.accept("Hello");
258
259 // Lambda of interfaces that have <clinit> are not archived.
260 InterfaceWithClinit i2 = () -> {
261 System.out.println("Test 3");
262 };
263 i2.dispatch();
264
265 // These two classes have almost identical source code, but
266 // only NormalClass should have its lambdas pre-resolved.
267 // SubOfOldClass is "old" -- it should be excluded from the AOT cache,
268 // so none of its lambda proxies should be cached
269 NormalClass.testLambda(); // Lambda proxy should be cached
270 SubOfOldClass.testLambda(); // Lambda proxy shouldn't be cached
271 }
272 }
273
274 class StringConcatTest {
275 static void test() {
276 System.out.println("StringConcatTest <concat> " + new StringConcatTest()); // concat should be aot-resolved
277 }
278 }
279
280 /* see StringConcatTestOld.jasm
281
282 class StringConcatTestOld {
283 public static void main(String args[]) {
284 // concat should be aot-resolved => the MethodType refers to an old class
285 System.out.println("StringConcatTestOld <concat> " + new OldConsumer());
286 }
287 }
288 */
289
290 class NormalClass {
291 static void testLambda() {
292 Runnable r = () -> {
293 System.out.println("NormalClass testLambda");
294 };
295 r.run();
296 }
297 }
298
299 class SubOfOldClass extends OldClass {
300 static void testLambda() {
301 Runnable r = () -> {
302 System.out.println("SubOfOldClass testLambda");
303 };
304 r.run();
305 }
306 }
307
308 interface MyInterface {
309 void dispatch(OldClass c);
310 }
311
312 interface InterfaceWithClinit {
313 static final long X = System.currentTimeMillis();
314 void dispatch();
315 default long dummy() { return X; }
316 }
317
318 class ResolvedConstantsFoo {
319 int a = 1;
320 void doit() {
321 }
322
323 void doBar(ResolvedConstantsBar bar) {
324 bar.a ++;
325 bar.b ++;
326 }
327 }
328
329 class ResolvedConstantsBar extends ResolvedConstantsFoo {
330 int b = 2;
331 void doit() {
332 System.out.println("Hello ResolvedConstantsBar and " + ResolvedConstantsFoo.class.getName());
333 System.out.println("a = " + a);
334 System.out.println("a = " + ((ResolvedConstantsFoo)this).a);
335 System.out.println("b = " + b);
336
337 doBar(this);
338
339 ((ResolvedConstantsFoo)this).doBar(this);
340 }
341 }