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test/jdk/jdk/jfr/event/runtime/TestClasses.java

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rev 58565 : 8238358: Implementation of JEP 371: Hidden Classes
Reviewed-by: duke
Contributed-by: mandy.chung@oracle.com, lois.foltan@oracle.com, david.holmes@oracle.com, harold.seigel@oracle.com, serguei.spitsyn@oracle.com, alex.buckley@oracle.com, jamsheed.c.m@oracle.com
   1 /*
   2  * Copyright (c) 2013, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.runtime;
  27 








  28 public class TestClasses {
  29 
  30     protected TestClassPrivate testClassPrivate;
  31     protected TestClassPrivateStatic testClassPrivateStatic;
  32 
  33     public TestClasses() {
  34         testClassPrivate = new TestClassPrivate();
  35         testClassPrivateStatic = new TestClassPrivateStatic();
  36     }
  37 
  38     // Classes TestClassPrivate and TestClassPrivateStatic should be loaded at
  39     // the same time
  40     // as the base class TestClasses
  41     private class TestClassPrivate {
  42     }
  43 
  44     private static class TestClassPrivateStatic {
  45     }
  46 
  47     protected class TestClassProtected {


  59 
  60     protected class TestClassProtected1 {
  61     }
  62 
  63     protected static class TestClassProtectedStatic1 {
  64         protected TestClassProtectedStaticInner testClassProtectedStaticInner = new TestClassProtectedStaticInner();
  65 
  66         protected static class TestClassProtectedStaticInner {
  67         }
  68     }
  69 
  70     public static class TestClassPublicStatic {
  71         public static class TestClassPublicStaticInner {
  72         }
  73     }
  74 
  75 }
  76 
  77 class TestClass {
  78     static {
  79         // force creation of anonymous class (for the lambda form)
  80         Runnable r = () -> System.out.println("Hello");
  81         r.run();
  82     }












  83 }
   1 /*
   2  * Copyright (c) 2013, 2020, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.runtime;
  27 
  28 import java.lang.invoke.MethodType;
  29 import java.lang.invoke.MethodHandles;
  30 import java.lang.invoke.MethodHandles.Lookup;
  31 import java.lang.reflect.Array;
  32 import static java.lang.invoke.MethodHandles.Lookup.ClassOption.*;
  33 
  34 import jdk.internal.misc.Unsafe;
  35 
  36 public class TestClasses {
  37 
  38     protected TestClassPrivate testClassPrivate;
  39     protected TestClassPrivateStatic testClassPrivateStatic;
  40 
  41     public TestClasses() {
  42         testClassPrivate = new TestClassPrivate();
  43         testClassPrivateStatic = new TestClassPrivateStatic();
  44     }
  45 
  46     // Classes TestClassPrivate and TestClassPrivateStatic should be loaded at
  47     // the same time
  48     // as the base class TestClasses
  49     private class TestClassPrivate {
  50     }
  51 
  52     private static class TestClassPrivateStatic {
  53     }
  54 
  55     protected class TestClassProtected {


  67 
  68     protected class TestClassProtected1 {
  69     }
  70 
  71     protected static class TestClassProtectedStatic1 {
  72         protected TestClassProtectedStaticInner testClassProtectedStaticInner = new TestClassProtectedStaticInner();
  73 
  74         protected static class TestClassProtectedStaticInner {
  75         }
  76     }
  77 
  78     public static class TestClassPublicStatic {
  79         public static class TestClassPublicStaticInner {
  80         }
  81     }
  82 
  83 }
  84 
  85 class TestClass {
  86     static {
  87         // force creation of hidden class (for the lambda form)
  88         Runnable r = () -> System.out.println("Hello");
  89         r.run();
  90     }
  91 
  92     public static void createNonFindableClasses(byte[] klassbuf) throws Throwable {
  93         // Create a hidden class and an array of hidden classes.
  94         Lookup lookup = MethodHandles.lookup();
  95         Class<?> clh = lookup.defineHiddenClass(klassbuf, false, NESTMATE).lookupClass();
  96         Class<?> arrayOfHidden = Array.newInstance(clh, 10).getClass(); // HAS ISSUES?
  97 
  98         // Create an Unsafe anonymous class and an array of unsafe anonymous classes.
  99         Unsafe unsafe = Unsafe.getUnsafe();
 100         Class<?> clu = unsafe.defineAnonymousClass(TestClass.class, klassbuf, new Object[0]);
 101         final Class<?> arrayOfUAC = Array.newInstance(clu, 15).getClass();
 102     }
 103 }
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