1 /*

     2  * Copyright (c) 2018, 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/appcds /test/hotspot/jtreg/runtime/appcds/test-classes

    33  * @requires vm.cds

    34  * @requires vm.flavor != "minimal"

    35  * @modules java.base/jdk.internal.misc

    36  *          jdk.jartool/sun.tools.jar

    37  *          java.management

    38  * @build AnonVmClassesDuringDumpTransformer Hello

    39  * @run main/othervm AnonVmClassesDuringDump

    40  */

    41 

    42 public class AnonVmClassesDuringDump {

    43     public static String appClasses[] = {

    44         "Hello",

    45     };

    46     public static String agentClasses[] = {

    47         "AnonVmClassesDuringDumpTransformer",

    48     };

    49 

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

    51 

    52     public static void main(String[] args) throws Throwable {

    53         String agentJar =

    54             ClassFileInstaller.writeJar("AnonVmClassesDuringDumpTransformer.jar",

    55                                         ClassFileInstaller.Manifest.fromSourceFile("AnonVmClassesDuringDumpTransformer.mf"),

    56                                         agentClasses);

    57 

    58         String appJar =

    59             ClassFileInstaller.writeJar("AnonVmClassesDuringDumpApp.jar", appClasses);

    60 

    61         TestCommon.testDump(appJar, TestCommon.list("Hello"),

    62                             "-javaagent:" + agentJar,

    63                             "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption,

    64                             // Set the following property to see logs for dynamically generated classes

    65                             // in STDOUT

    66                             "-Djava.lang.invoke.MethodHandle.DUMP_CLASS_FILES=true");

    67 

    68         String prefix = ".class.load. ";

    69         // class name pattern like the following:

    70         // jdk.internal.loader.BuiltinClassLoader$$Lambda$1/1816757085

    71         // java.lang.invoke.LambdaForm$MH/1585787493

    72         String class_pattern = ".*Lambda([a-z0-9$]+)/([0-9]+).*";

    73         String suffix = ".*source: shared objects file.*";

    74         String pattern = prefix + class_pattern + suffix;

    75         // during run time, anonymous classes shouldn't be loaded from the archive

    76         TestCommon.run("-cp", appJar,

    77             "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption, "Hello")

    78             .assertNormalExit(output -> output.shouldNotMatch(pattern));

    79 

    80         // inspect the archive and make sure no anonymous class is in there

    81         TestCommon.run("-cp", appJar,

    82             "-XX:+UnlockDiagnosticVMOptions", cdsDiagnosticOption,

    83             "-XX:+PrintSharedArchiveAndExit", "-XX:+PrintSharedDictionary", "Hello")

    84             .assertNormalExit(output -> output.shouldNotMatch(class_pattern));

    85     }

    86 }

    87