jdk8-mips64-public/hotspot: test/runtime/RedefineTests/RedefineDoubleDelete.java@4170228e11e6

8231463: Fix runtime/RedefineTests/RedefineDoubleDelete.java test in 8u
Reviewed-by: andrew

     1 /*

     2  * Copyright (c) 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  */

    24 /*

    25  * @test

    26  * @bug 8178870

    27  * @library /testlibrary

    28  * @summary Redefine class with CFLH twice to test deleting the cached_class_file

    29  * @build RedefineClassHelper

    30  * @run main RedefineClassHelper

    31  * @run main/othervm -javaagent:redefineagent.jar RedefineDoubleDelete

    32  */

    34 public class RedefineDoubleDelete {

    36     // Class gets a redefinition error because it adds a data member

    37     public static String newB =

    38                 "class RedefineDoubleDelete$B {" +

    39                 "   int count1 = 0;" +

    40                 "}";

    42     public static String newerB =

    43                 "class RedefineDoubleDelete$B { " +

    44                 "   int faa() { System.out.println(\"baa\"); return 2; }" +

    45                 "}";

    47     // The ClassFileLoadHook for this class turns foo into faa and prints out faa.

    48     static class B {

    49       int faa() { System.out.println("foo"); return 1; }

    50     }

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

    54         B b = new B();

    55         int val = b.faa();

    56         if (val != 1) {

    57             throw new RuntimeException("return value wrong " + val);

    58         }

    60         // Redefine B twice to get cached_class_file in both B scratch classes

    61         try {

    62             RedefineClassHelper.redefineClass(B.class, newB);

    63         } catch (java.lang.UnsupportedOperationException e) {

    64             // this is expected

    65         }

    66         try {

    67             RedefineClassHelper.redefineClass(B.class, newB);

    68         } catch (java.lang.UnsupportedOperationException e) {

    69             // this is expected

    70         }

    72         // Do a full GC.

    73         System.gc();

    75         // Redefine with a compatible class

    76         RedefineClassHelper.redefineClass(B.class, newerB);

    77         val = b.faa();

    78         if (val != 2) {

    79             throw new RuntimeException("return value wrong " + val);

    80         }

    82         // Do another full GC to clean things up.

    83         System.gc();

    84     }

    85 }

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