1 /* 2 * Copyright (c) 2018, 2019, 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 When dumping the CDS archive, try to load VM anonymous classes to make sure they 28 * are handled properly. Note: these are not "anonymous inner classes" in the Java source code, 29 * but rather classes that are not recorded in any ClassLoaderData::dictionary(), 30 * such as classes that are generated for Lambda expressions. 31 * See https://blogs.oracle.com/jrose/anonymous-classes-in-the-vm. 32 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes 33 * @requires vm.cds 34 * @requires vm.flavor != "minimal" 35 * @run driver AnonVmClassesDuringDump 36 */ 37 38 public class AnonVmClassesDuringDump { 39 public static String appClasses[] = { 40 Hello.class.getName(), 41 }; 42 public static String agentClasses[] = { 43 AnonVmClassesDuringDumpTransformer.class.getName(), 44 }; 45 46 public static String cdsDiagnosticOption = "-XX:+AllowArchivingWithJavaAgent"; 47 48 public static void main(String[] args) throws Throwable { 49 String agentJar = 50 ClassFileInstaller.writeJar("AnonVmClassesDuringDumpTransformer.jar", 51 ClassFileInstaller.Manifest.fromSourceFile("AnonVmClassesDuringDumpTransformer.mf"), 52 agentClasses); 53 54 String appJar = 55 ClassFileInstaller.writeJar("AnonVmClassesDuringDumpApp.jar", appClasses); 56 57 TestCommon.testDump(appJar, TestCommon.list(Hello.class.getName()), 58 "-javaagent:" + agentJar, 59 "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption, 60 // Set the following property to see logs for dynamically generated classes 61 // in STDOUT 62 "-Djava.lang.invoke.MethodHandle.DUMP_CLASS_FILES=true"); 63 64 String prefix = ".class.load. "; 65 // class name pattern like the following: 66 // jdk.internal.loader.BuiltinClassLoader$$Lambda$1/1816757085 67 // java.lang.invoke.LambdaForm$MH/1585787493 68 String class_pattern = ".*Lambda([a-z0-9$]+)/([0-9]+).*"; 69 String suffix = ".*source: shared objects file.*"; 70 String pattern = prefix + class_pattern + suffix; 71 // during run time, anonymous classes shouldn't be loaded from the archive 72 TestCommon.run("-cp", appJar, 73 "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption, Hello.class.getName()) 74 .assertNormalExit(output -> output.shouldNotMatch(pattern)); 75 76 // inspect the archive and make sure no anonymous class is in there 77 TestCommon.run("-cp", appJar, 78 "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption, 79 "-XX:+PrintSharedArchiveAndExit", "-XX:+PrintSharedDictionary", Hello.class.getName()) 80 .assertNormalExit(output -> output.shouldNotMatch(class_pattern)); 81 } 82 } 83