1 /*

     2  * Copyright (c) 2015, 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 import java.lang.*;

    26 import java.lang.reflect.*;

    27 import jdk.test.lib.cds.CDSTestUtils;

    28 import sun.hotspot.WhiteBox;

    29 

    30 public class DummyClassHelper {

    31     static void checkDummyMethod(Class<?> cls, String className) {

    32         Method m = null;

    33         try {

    34             m = cls.getMethod("thisClassIsDummy");

    35             throw new java.lang.RuntimeException(className +

    36                 " should be loaded from the jimage and should not have the thisClassIsDummy() method.");

    37         } catch(NoSuchMethodException ex) {

    38             System.out.println(ex.toString());

    39         }

    40     }

    41 

    42     public static void main(String[] args) throws Exception {

    43         String[] classNames = {args[0], args[1]};

    44         Class cls = null;

    45         boolean doWBCheck = (args.length == 3);

    46         WhiteBox wb = null;

    47         if (doWBCheck) {

    48             wb = WhiteBox.getWhiteBox();

    49         }

    50         for (int i = 0; i < classNames.length; i++) {

    51             cls = Class.forName(classNames[i]);

    52             checkDummyMethod(cls, classNames[i]);

    53             if (doWBCheck) {

    54                 // FIXME: for dynamic archive, the class loaded from the

    55                 // bootclasspath jar during dump time is not loaded from the

    56                 // archive during run time.

    57                 if (!CDSTestUtils.isDynamicArchive()) {

    58                     if (!wb.isSharedClass(cls)) {

    59                         throw new java.lang.RuntimeException(classNames[i] +

    60                             ".class should be in shared space.");

    61                     }

    62                 }

    63             }

    64         }

    65     }

    66 }