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  * @test

    26  * @bug 8046171

    27  * @summary Test JNI access to private constructors between nestmates and nest-host

    28  *          using different flavours of named nested types using core reflection

    29  * @compile ../NestmatesJNI.java

    30  * @run main/othervm/native TestJNI

    31  * @run main/othervm/native -Xcheck:jni TestJNI

    32  */

    33 public class TestJNI {

    34 

    35     // Unlike reflection, the calling context is not relevant to JNI

    36     // calls, but we keep the same structure as the reflection tests.

    37 

    38 

    39     // All constructors are private to ensure nestmate access checks apply

    40 

    41     // All doConstruct methods are public so they don't involve nestmate access

    42 

    43     private TestJNI() {}

    44 

    45     // The various nestmates

    46 

    47     // Note: No constructor on interfaces so no StaticIface variants

    48 

    49     static interface StaticIface {

    50 

    51         // Methods that will access private constructors of nestmates.

    52 

    53         default void doConstruct(TestJNI o) throws Throwable {

    54             Object obj = newInstance(o.getClass());

    55         }

    56         default void doConstruct(TestJNI outerThis, InnerNested o) throws Throwable {

    57             Object obj = newInstance(o.getClass(), outerThis);

    58         }

    59         default void doConstruct(StaticNested o) throws Throwable {

    60             Object obj = newInstance(o.getClass());

    61         }

    62     }

    63 

    64     static class StaticNested {

    65 

    66         private StaticNested() {}

    67 

    68         // Methods that will access private constructors of nestmates.

    69         // The arg is a dummy for overloading purposes

    70 

    71         public void doConstruct(TestJNI o) throws Throwable {

    72             Object obj = newInstance(o.getClass());

    73         }

    74         public  void doConstruct(TestJNI outerThis, InnerNested o) throws Throwable {

    75             Object obj = newInstance(o.getClass(), outerThis);

    76         }

    77         public void doConstruct(StaticNested o) throws Throwable {

    78             Object obj = newInstance(o.getClass());

    79         }

    80     }

    81 

    82     class InnerNested {

    83 

    84         private InnerNested() {}

    85 

    86         // Methods that will access private constructors of nestmates.

    87         // The arg is a dummy for overloading purposes

    88 

    89         public void doConstruct(TestJNI o) throws Throwable {

    90             Object obj = newInstance(o.getClass());

    91         }

    92         public  void doConstruct(TestJNI outerThis, InnerNested o) throws Throwable {

    93             Object obj = newInstance(o.getClass(), outerThis);

    94         }

    95         public void doConstruct(StaticNested o) throws Throwable {

    96             Object obj = newInstance(o.getClass());

    97         }

    98     }

    99 

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

   101         // These initial constructions test nest-host access to members

   102 

   103         TestJNI o = newInstance(TestJNI.class);

   104         StaticNested s = (StaticNested) newInstance(StaticNested.class);

   105         InnerNested i = (InnerNested) newInstance(InnerNested.class, o);

   106 

   107         // We need a StaticIface instance to call doConstruct on

   108         StaticIface intf = new StaticIface() {};

   109 

   110         s.doConstruct(o);

   111         s.doConstruct(o, i);

   112         s.doConstruct(s);

   113 

   114         i.doConstruct(o);

   115         i.doConstruct(o, i);

   116         i.doConstruct(s);

   117 

   118         intf.doConstruct(o);

   119         intf.doConstruct(o, i);

   120         intf.doConstruct(s);

   121     }

   122 

   123     static <T> T newInstance(Class<T> klass) {

   124         return newInstance(klass, null);

   125     }

   126 

   127     static <T> T newInstance(Class<T> klass, Object outerThis) {

   128         String sig = (outerThis == null) ?

   129             "()V" :

   130             "(L" + outerThis.getClass().getName() + ";)V";

   131         String definingClass = klass.getName();

   132         String desc = " Invocation of constructor " + definingClass + sig;

   133         try {

   134             T ret = (T) NestmatesJNI.newInstance(definingClass, sig, outerThis);

   135             System.out.println(desc + " - passed");

   136             return ret;

   137         }

   138         catch (Throwable t) {

   139             throw new Error(desc + ": Unexpected exception: " + t, t);

   140         }

   141     }

   142 }