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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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/*
 * @test
 * @summary When dumping the CDS archive, try to load VM anonymous classes to make sure they
 *          are handled properly. Note: these are not "anonymous inner classes" in the Java source code,
 *          but rather classes that are not recorded in any ClassLoaderData::dictionary(),
 *          such as classes that are generated for Lambda expressions.
 *          See https://blogs.oracle.com/jrose/anonymous-classes-in-the-vm.
 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes
 * @requires vm.cds
 * @requires vm.flavor != "minimal"
 * @build AnonVmClassesDuringDumpTransformer Hello
 * @run main/othervm AnonVmClassesDuringDump
 */

public class AnonVmClassesDuringDump {
    public static String appClasses[] = {
        "Hello",
    };
    public static String agentClasses[] = {
        "AnonVmClassesDuringDumpTransformer",
    };

    public static String cdsDiagnosticOption = "-XX:+AllowArchivingWithJavaAgent";

    public static void main(String[] args) throws Throwable {
        String agentJar =
            ClassFileInstaller.writeJar("AnonVmClassesDuringDumpTransformer.jar",
                                        ClassFileInstaller.Manifest.fromSourceFile("AnonVmClassesDuringDumpTransformer.mf"),
                                        agentClasses);

        String appJar =
            ClassFileInstaller.writeJar("AnonVmClassesDuringDumpApp.jar", appClasses);

        TestCommon.testDump(appJar, TestCommon.list("Hello"),
                            "-javaagent:" + agentJar,
                            "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption,
                            // Set the following property to see logs for dynamically generated classes
                            // in STDOUT
                            "-Djava.lang.invoke.MethodHandle.DUMP_CLASS_FILES=true");

        String prefix = ".class.load. ";
        // class name pattern like the following:
        // jdk.internal.loader.BuiltinClassLoader$$Lambda$1/1816757085
        // java.lang.invoke.LambdaForm$MH/1585787493
        String class_pattern = ".*Lambda([a-z0-9$]+)/([0-9]+).*";
        String suffix = ".*source: shared objects file.*";
        String pattern = prefix + class_pattern + suffix;
        // during run time, anonymous classes shouldn't be loaded from the archive
        TestCommon.run("-cp", appJar,
            "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption, "Hello")
            .assertNormalExit(output -> output.shouldNotMatch(pattern));

        // inspect the archive and make sure no anonymous class is in there
        TestCommon.run("-cp", appJar,
            "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption,
            "-XX:+PrintSharedArchiveAndExit", "-XX:+PrintSharedDictionary", "Hello")
            .assertNormalExit(output -> output.shouldNotMatch(class_pattern));
    }
}