1 /*
   2  * Copyright (c) 2015, 2017, 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 sun.hotspot.WhiteBox;
  28 
  29 public class DummyClassHelper {
  30     public static void main(String[] args) throws Exception {
  31         String[] classNames = {args[0], args[1]};
  32         Class cls = null;
  33         if (args.length == 2) {
  34             for (int i = 0; i < classNames.length; i++) {
  35                 Method m = null;
  36                 cls = Class.forName(classNames[i]);
  37                 try {
  38                     m = cls.getMethod("thisClassIsDummy");
  39                     throw new java.lang.RuntimeException(classNames[i] +
  40                         " should be loaded from the jimage and should not have the thisClassIsDummy() method.");
  41                 } catch(NoSuchMethodException ex) {
  42                     System.out.println(ex.toString());
  43                 }
  44             }
  45         } else {
  46             WhiteBox wb = WhiteBox.getWhiteBox();







  47             for (int i = 0; i < classNames.length; i++) {
  48                 cls = Class.forName(classNames[i]);


  49                 if (!wb.isSharedClass(cls)) {
  50                     System.out.println(classNames[i] + ".class" + " is not in shared space as expected.");
  51                 } else {
  52                     throw new java.lang.RuntimeException(classNames[i] +
  53                         ".class shouldn't be in shared space.");
  54                 }
  55             }
  56         }
  57     }
  58 }

   1 /*
   2  * Copyright (c) 2015, 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 import java.lang.*;
  26 import java.lang.reflect.*;
  27 import sun.hotspot.WhiteBox;
  28 
  29 public class DummyClassHelper {
  30     static void checkDummyMethod(Class<?> cls, String className) {




  31         Method m = null;

  32         try {
  33             m = cls.getMethod("thisClassIsDummy");
  34             throw new java.lang.RuntimeException(className +
  35                 " should be loaded from the jimage and should not have the thisClassIsDummy() method.");
  36         } catch(NoSuchMethodException ex) {
  37             System.out.println(ex.toString());
  38         }
  39     }
  40 
  41     public static void main(String[] args) throws Exception {
  42         String[] classNames = {args[0], args[1]};
  43         Class cls = null;
  44         boolean doWBCheck = (args.length == 3);
  45         WhiteBox wb = null;
  46         if (doWBCheck) {
  47             wb = WhiteBox.getWhiteBox();
  48         }
  49         for (int i = 0; i < classNames.length; i++) {
  50             cls = Class.forName(classNames[i]);
  51             checkDummyMethod(cls, classNames[i]);
  52             if (doWBCheck) {
  53                 if (!wb.isSharedClass(cls)) {


  54                     throw new java.lang.RuntimeException(classNames[i] +
  55                         ".class should be in shared space.");
  56                 }
  57             }
  58         }
  59     }
  60 }