1 /*
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   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