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 }