1 /*

     2  * Copyright (c) 2016, 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  * @summary AOT methods should be swept if a super class has changed.

    27  * @library /test/lib /

    28  * @modules java.base/jdk.internal.misc

    29  *          java.management

    30  * @requires vm.bits == "64" & os.arch == "amd64" & os.family == "linux"

    31  * @build compiler.aot.fingerprint.SuperChanged

    32  *        compiler.aot.AotCompiler

    33  *

    34  * @run main

    35  *      compiler.aot.fingerprint.SuperChanged WRITE-UNMODIFIED-CLASS

    36  * @run main/othervm compiler.aot.AotCompiler -libname libSuperChanged.so

    37  *      -class compiler.aot.fingerprint.Foo

    38  *

    39  * @run main

    40  *      compiler.aot.fingerprint.SuperChanged TEST-UNMODIFIED

    41  * @run main/othervm -XX:+UseAOT -XX:+PrintAOT -XX:AOTLibrary=./libSuperChanged.so

    42  *      -Xlog:aot+class+fingerprint=trace -Xlog:aot+class+load=trace

    43  *      compiler.aot.fingerprint.SuperChanged TEST-UNMODIFIED

    44   *

    45  * @run main

    46  *      compiler.aot.fingerprint.SuperChanged WRITE-MODIFIED-CLASS

    47  * @run main

    48  *      compiler.aot.fingerprint.SuperChanged TEST-MODIFIED

    49  * @run main/othervm -XX:+UseAOT -XX:+PrintAOT -XX:AOTLibrary=./libSuperChanged.so

    50  *      -Xlog:aot+class+fingerprint=trace -Xlog:aot+class+load=trace

    51  *      compiler.aot.fingerprint.SuperChanged TEST-MODIFIED

    52  */

    53 

    54 package compiler.aot.fingerprint;

    55 

    56 import jdk.test.lib.Asserts;

    57 import jdk.test.lib.InMemoryJavaCompiler;

    58 

    59 import java.io.*;

    60 

    61 class Bar {

    62     volatile int x = 0;

    63     volatile int y = 1;

    64 }

    65 

    66 class Foo extends Bar {

    67 

    68     volatile int z;

    69     int getX() {

    70         for (z = 0; z < 10000; z++) {

    71             if (z % 7 == 1) {

    72                 z += 2;

    73             }

    74         }

    75         return x;

    76     }

    77 }

    78 

    79 public class SuperChanged {

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

    81         Foo f = new Foo();

    82         System.out.println("f.getX = " + f.getX());

    83         switch (args[0]) {

    84         case "WRITE-UNMODIFIED-CLASS":

    85             compileClass(false);

    86             break;

    87         case "WRITE-MODIFIED-CLASS":

    88             compileClass(true);

    89             break;

    90         case "TEST-UNMODIFIED":

    91             Asserts.assertTrue(f.getX() == 0, "getX from unmodified Foo class should return 0");

    92             break;

    93         case "TEST-MODIFIED":

    94             Asserts.assertTrue(f.getX() == 1, "getX from modified Foo class should return 1");

    95             break;

    96         default:

    97             throw new RuntimeException("unexpected option: " + args[0]);

    98         }

    99     }

   100 

   101     static void compileClass(boolean isModified) throws Throwable {

   102         String class_src_0 = "package compiler.aot.fingerprint; class Bar {volatile int x = 0;  volatile int y = 1;}";

   103         String class_src_1 = "package compiler.aot.fingerprint; class Bar {volatile int y = 0;  volatile int x = 1;}";

   104         String src = (isModified) ? class_src_1 : class_src_0;

   105 

   106         String filename = System.getProperty("test.classes") + "/compiler/aot/fingerprint/Bar.class";

   107         FileOutputStream fos = new FileOutputStream(filename);

   108         fos.write(InMemoryJavaCompiler.compile("compiler.aot.fingerprint.Bar", src));

   109         fos.close();

   110     }

   111 }