1 /*
   2  * Copyright (c) 2016, 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  */
  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.arch == "x86_64") & !(os.family == "windows")
  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 }