jdk8-mips64-public/hotspot: test/runtime/contended/Inheritance1.java@f90c822e73f8 (annotated)

test/runtime/contended/Inheritance1.java@f90c822e73f8 (annotated)

test/runtime/contended/Inheritance1.java

Wed, 27 Apr 2016 01:25:04 +0800

author: aoqi
date: Wed, 27 Apr 2016 01:25:04 +0800
changeset 0: f90c822e73f8
permissions: -rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

 /*
  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 import java.io.BufferedReader;
 import java.io.InputStreamReader;
 import java.lang.Class;
 import java.lang.String;
 import java.lang.System;
 import java.lang.management.ManagementFactory;
 import java.lang.management.RuntimeMXBean;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.CyclicBarrier;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 import sun.misc.Unsafe;
 import sun.misc.Contended;
 /*
  * @test
  * @bug     8012939
  * @summary \@Contended doesn't work correctly with inheritance
  *
  * @run main/othervm -XX:-RestrictContended Inheritance1
  */
 public class Inheritance1 {
     private static final Unsafe U;
     private static int ADDRESS_SIZE;
     private static int HEADER_SIZE;
     static {
         // steal Unsafe
         try {
             Field unsafe = Unsafe.class.getDeclaredField("theUnsafe");
             unsafe.setAccessible(true);
             U = (Unsafe) unsafe.get(null);
         } catch (NoSuchFieldException | IllegalAccessException e) {
             throw new IllegalStateException(e);
         }
         // When running with CompressedOops on 64-bit platform, the address size
         // reported by Unsafe is still 8, while the real reference fields are 4 bytes long.
         // Try to guess the reference field size with this naive trick.
         try {
             long off1 = U.objectFieldOffset(CompressedOopsClass.class.getField("obj1"));
             long off2 = U.objectFieldOffset(CompressedOopsClass.class.getField("obj2"));
             ADDRESS_SIZE = (int) Math.abs(off2 - off1);
             HEADER_SIZE = (int) Math.min(off1, off2);
         } catch (NoSuchFieldException e) {
             ADDRESS_SIZE = -1;
         }
     }
     static class CompressedOopsClass {
         public Object obj1;
         public Object obj2;
     }
     public static boolean arePaddedPairwise(Class klass, String field1, String field2) throws Exception {
         Field f1 = klass.getField(field1);
         Field f2 = klass.getField(field2);
         int diff = offset(f1) - offset(f2);
         if (diff < 0) {
             // f1 is first
             return (offset(f2) - (offset(f1) + getSize(f1))) > 64;
         } else {
             // f2 is first
             return (offset(f1) - (offset(f2) + getSize(f2))) > 64;
         }
     }
     public static boolean sameLayout(Class klass1, Class klass2) throws Exception {
         for (Field f1 : klass1.getDeclaredFields()) {
             Field f2 = klass2.getDeclaredField(f1.getName());
             if (offset(f1) != offset(f2)) {
                 return false;
             }
         }
         for (Field f2 : klass1.getDeclaredFields()) {
             Field f1 = klass2.getDeclaredField(f2.getName());
             if (offset(f1) != offset(f2)) {
                 return false;
             }
         }
         return true;
     }
     public static boolean isStatic(Field field) {
         return Modifier.isStatic(field.getModifiers());
     }
     public static int offset(Field field) {
         if (isStatic(field)) {
             return (int) U.staticFieldOffset(field);
         } else {
             return (int) U.objectFieldOffset(field);
         }
     }
     public static int getSize(Field field) {
         Class type = field.getType();
         if (type == byte.class)    { return 1; }
         if (type == boolean.class) { return 1; }
         if (type == short.class)   { return 2; }
         if (type == char.class)    { return 2; }
         if (type == int.class)     { return 4; }
         if (type == float.class)   { return 4; }
         if (type == long.class)    { return 8; }
         if (type == double.class)  { return 8; }
         return ADDRESS_SIZE;
     }
     public static void main(String[] args) throws Exception {
         boolean endResult = true;
         // --------------- INSTANCE FIELDS ---------------------
         if (!arePaddedPairwise(A2_R1.class, "int1", "int2")) {
             System.err.println("A2_R1 failed");
             endResult &= false;
         }
         if (!arePaddedPairwise(A3_R1.class, "int1", "int2")) {
             System.err.println("A3_R1 failed");
             endResult &= false;
         }
         if (!arePaddedPairwise(A1_R2.class, "int1", "int2")) {
             System.err.println("A1_R2 failed");
             endResult &= false;
         }
         if (!arePaddedPairwise(A2_R2.class, "int1", "int2")) {
             System.err.println("A2_R2 failed");
             endResult &= false;
         }
         if (!arePaddedPairwise(A3_R2.class, "int1", "int2")) {
             System.err.println("A3_R2 failed");
             endResult &= false;
         }
         if (!arePaddedPairwise(A1_R3.class, "int1", "int2")) {
             System.err.println("A1_R3 failed");
             endResult &= false;
         }
         if (!arePaddedPairwise(A2_R3.class, "int1", "int2")) {
             System.err.println("A2_R3 failed");
             endResult &= false;
         }
         if (!arePaddedPairwise(A3_R3.class, "int1", "int2")) {
             System.err.println("A3_R3 failed");
             endResult &= false;
         }
         System.out.println(endResult ? "Test PASSES" : "Test FAILS");
         if (!endResult) {
            throw new Error("Test failed");
         }
     }
     public static class R1 {
         public int int1;
     }
     public static class R2 {
         @Contended
         public int int1;
     }
     @Contended
     public static class R3 {
         public int int1;
     }
     public static class A1_R1 extends R1 {
         public int int2;
     }
     public static class A2_R1 extends R1 {
         @Contended
         public int int2;
     }
     @Contended
     public static class A3_R1 extends R1 {
         public int int2;
     }
     public static class A1_R2 extends R2 {
         public int int2;
     }
     public static class A2_R2 extends R2 {
         @Contended
         public int int2;
     }
     @Contended
     public static class A3_R2 extends R2 {
         public int int2;
     }
     public static class A1_R3 extends R3 {
         public int int2;
     }
     public static class A2_R3 extends R3 {
         @Contended
         public int int2;
     }
     @Contended
     public static class A3_R3 extends R3 {
         public int int2;
     }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/runtime/contended/Inheritance1.java@f90c822e73f8 (annotated)

test/runtime/contended/Inheritance1.java