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.SelfChanged

    32  *        compiler.aot.AotCompiler

    33  *

    34  * @run main

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

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

    37  *      -class compiler.aot.fingerprint.Blah

    38  *

    39  * @run main/othervm

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

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

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

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

    44  *

    45  * @run main

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

    47  * @run main

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

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

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

    51  *      compiler.aot.fingerprint.SelfChanged 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 Blah {

    62     volatile int z;

    63     int getX() {

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

    65             if (z % 7 == 1) {

    66                 z += 2;

    67             }

    68         }

    69         return 0;

    70     }

    71 }

    72 

    73 public class SelfChanged {

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

    75         Blah f = new Blah();

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

    77         switch (args[0]) {

    78         case "WRITE-UNMODIFIED-CLASS":

    79             compileClass(false);

    80             break;

    81         case "WRITE-MODIFIED-CLASS":

    82             compileClass(true);

    83             break;

    84         case "TEST-UNMODIFIED":

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

    86             break;

    87         case "TEST-MODIFIED":

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

    89             break;

    90         default:

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

    92         }

    93     }

    94 

    95     static void compileClass(boolean isModified) throws Throwable {

    96         String src =

    97                "package compiler.aot.fingerprint;"

    98              + "public class Blah {"

    99              + "    volatile int z;"

   100              + "    int getX() {"

   101              + "        for (z = 0; z < 10000; z++) {"

   102              + "            if (z % 7 == 1) {"

   103              + "                z += 2;"

   104              + "            }"

   105              + "        }"

   106              + "        return " + ((isModified) ? "1" : "0") + ";"

   107              + "    }"

   108              + "    int getY() {return 255;}"

   109 

   110             // The following is for the SelfChangedCDS.java test case. We always load an unmodified

   111             // version of Blah from the CDS archive. However, we would load an AOT library that

   112             // was compiled using a modified version of Blah. The getX method in this AOT library should

   113             // not be used.

   114 

   115             + "    public static void main(String args[]) {"

   116              + "        Blah b = new Blah();"

   117              + "        int n = b.getX();"

   118              + "        if (n != 0) {"

   119              + "            throw new RuntimeException(args[0] +  \" : \" + n);"

   120              + "        }"

   121              + "        System.out.println(\"PASSED\");"

   122              + "    }"

   123              + "}";

   124 

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

   126         FileOutputStream fos = new FileOutputStream(filename);

   127         fos.write(InMemoryJavaCompiler.compile("compiler.aot.fingerprint.Blah", src));

   128         fos.close();

   129     }

   130 }