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.io.*;

    26 import java.net.*;

    27 import sun.hotspot.WhiteBox;

    28 

    29 public class LoaderSegregation {

    30     // Use these definitions instead of literal strings, to avoid typos.

    31     static final String ONLY_BUILTIN      = "OnlyBuiltin";

    32     static final String ONLY_UNREGISTERED = "OnlyUnregistered";

    33 

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

    35         WhiteBox wb = WhiteBox.getWhiteBox();

    36 

    37         // [A] An archived BUILTIN class cannot be a subclass of a non-BUILTIN class.

    38         // [B] An archived BUILTIN class cannot implement a non-BUILTIN interface.

    39         if (wb.isSharedClass(LoaderSegregation.class)) {

    40             // [1] check that CustomLoadee is loadable from archive

    41             if (!wb.isSharedClass(CustomLoadee.class)) {

    42                 throw new RuntimeException("wb.isSharedClass(CustomLoadee.class) should be true");

    43             }

    44 

    45             // [2] CustomInterface2_ia should be archived, even though it was not specified in the classlist.

    46             //     It was successfully dumped as a side effect of attempting to load CustomLoadee2

    47             //     during dump time. Note that CustomLoadee2 failed to dump because one of its interfaces,

    48             //     CustomInterface2_ib, was not loadable from the BOOT/EXT/APP classpath. during dump time.

    49             if (!wb.isSharedClass(CustomInterface2_ia.class)) {

    50                 throw new RuntimeException("wb.isSharedClass(CustomInterface2_ia.class) should be true");

    51             }

    52 

    53             // [3] Check that the BUILTIN versions of CustomLoadee2 and CustomLoadee3Child are loadable

    54             //     at run time (since we have append LoaderSegregation_app2.jar the classpath),

    55             //     but these classes must be loaded from the JAR file.

    56             if (wb.isSharedClass(CustomLoadee2.class)) {

    57                 throw new RuntimeException("wb.isSharedClass(CustomLoadee2.class) should be false");

    58             }

    59             if (wb.isSharedClass(CustomLoadee3.class)) {

    60                 throw new RuntimeException("wb.isSharedClass(CustomLoadee3.class) should be false");

    61             }

    62             if (wb.isSharedClass(CustomLoadee3Child.class)) {

    63                 throw new RuntimeException("wb.isSharedClass(CustomLoadee3Child.class) should be false");

    64             }

    65         }

    66 

    67         // [C] BUILTIN and UNREGISTERED classes can be loaded only by their corresponding

    68         //     type of loaders.

    69 

    70         String path = args[0];

    71         File jarFile = new File(path);

    72         URL url = new File(path).toURI().toURL();

    73         URL[] urls = new URL[] {url};

    74         ClassLoader appLoader = LoaderSegregation.class.getClassLoader();

    75 

    76         { // BUILTIN LOADER

    77             try {

    78                 appLoader.loadClass(ONLY_UNREGISTERED);

    79                 throw new RuntimeException("BUILTIN loader cannot load archived UNREGISTERED class");

    80             } catch (ClassNotFoundException expected) {}

    81         }

    82 

    83         { // UNREGISTERED LOADER

    84             URLClassLoader urlClassLoader = new URLClassLoader(urls);

    85             Class c2 = Util.defineClassFromJAR(urlClassLoader, jarFile, ONLY_BUILTIN);

    86 

    87             if (c2.getClassLoader() != urlClassLoader) {

    88                 throw new RuntimeException("Error in test");

    89             }

    90 

    91             if (wb.isSharedClass(LoaderSegregation.class)) {

    92                 if (wb.isSharedClass(c2)) {

    93                     throw new RuntimeException("wb.isSharedClass(c2) should be false - " +

    94                                                "unregistered loader cannot load an archived BUILTIN class");

    95                 }

    96             }

    97         }

    98     }

    99 }