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 *

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

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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));

    }

}