--- a/hotspot/test/runtime/8003985/Test8003985.java Wed May 29 11:02:18 2013 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,302 +0,0 @@
-/*
- * 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 8003985
- * @summary Support Contended Annotation - JEP 142
- *
- * @run main/othervm -XX:-RestrictContended Test8003985
- */
-public class Test8003985 {
-
- 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.getDeclaredField(field1);
- Field f2 = klass.getDeclaredField(field2);
-
- if (isStatic(f1) != isStatic(f2)) {
- return true; // these guys are in naturally disjoint locations
- }
-
- 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 isPadded(Class klass, String field1) throws Exception {
- Field f1 = klass.getDeclaredField(field1);
-
- if (isStatic(f1)) {
- return offset(f1) > 128 + 64;
- }
-
- return offset(f1) > 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(Test1.class, "int1", "int2") ||
- isPadded(Test1.class, "int1") ||
- isPadded(Test1.class, "int2")) {
- System.err.println("Test1 failed");
- endResult &= false;
- }
-
- if (!arePaddedPairwise(Test2.class, "int1", "int2") ||
- !isPadded(Test2.class, "int1") ||
- isPadded(Test2.class, "int2")) {
- System.err.println("Test2 failed");
- endResult &= false;
- }
-
- if (!arePaddedPairwise(Test3.class, "int1", "int2") ||
- !isPadded(Test3.class, "int1") ||
- !isPadded(Test3.class, "int2")) {
- System.err.println("Test3 failed");
- endResult &= false;
- }
-
- if (arePaddedPairwise(Test4.class, "int1", "int2") ||
- !isPadded(Test4.class, "int1") ||
- !isPadded(Test4.class, "int2")) {
- System.err.println("Test4 failed");
- endResult &= false;
- }
-
- if (!arePaddedPairwise(Test5.class, "int1", "int2") ||
- !isPadded(Test5.class, "int1") ||
- !isPadded(Test5.class, "int2")) {
- System.err.println("Test5 failed");
- endResult &= false;
- }
-
- if (!arePaddedPairwise(Test6.class, "int1", "int2") ||
- !isPadded(Test6.class, "int1") ||
- !isPadded(Test6.class, "int2")) {
- System.err.println("Test6 failed");
- endResult &= false;
- }
-
- if (arePaddedPairwise(Test7.class, "int1", "int2") ||
- !isPadded(Test7.class, "int1") ||
- !isPadded(Test7.class, "int2")) {
- System.err.println("Test7 failed");
- endResult &= false;
- }
-
- if (!arePaddedPairwise(Test8.class, "int1", "int2") ||
- !isPadded(Test8.class, "int1") ||
- !isPadded(Test8.class, "int2")) {
- System.err.println("Test8 failed");
- endResult &= false;
- }
-
- if (!arePaddedPairwise(Test9.class, "int1", "int2") ||
- !isPadded(Test9.class, "int1") ||
- !isPadded(Test9.class, "int2")) {
- System.err.println("Test9 failed");
- endResult &= false;
- }
-
- if (!sameLayout(Test4.class, Test7.class)) {
- System.err.println("Test4 and Test7 have different layouts");
- endResult &= false;
- }
-
- if (!sameLayout(Test5.class, Test6.class)) {
- System.err.println("Test5 and Test6 have different layouts");
- endResult &= false;
- }
-
- if (!sameLayout(Test8.class, Test9.class)) {
- System.err.println("Test8 and Test9 have different layouts");
- endResult &= false;
- }
-
- System.out.println(endResult ? "Test PASSES" : "Test FAILS");
- if (!endResult) {
- throw new Error("Test failed");
- }
- }
-
- // ----------------------------------- INSTANCE FIELDS -----------------------------------------
-
- // naturally packed
- public static class Test1 {
- private int int1;
- private int int2;
- }
-
- // int1 is padded
- public static class Test2 {
- @Contended private int int1;
- private int int2;
- }
-
- // both fields are padded
- public static class Test3 {
- @Contended private int int1;
- @Contended private int int2;
- }
-
- // fields are padded in the singular group
- public static class Test4 {
- @Contended("sameGroup") private int int1;
- @Contended("sameGroup") private int int2;
- }
-
- // fields are padded in disjoint groups
- public static class Test5 {
- @Contended("diffGroup1") private int int1;
- @Contended("diffGroup2") private int int2;
- }
-
- // fields are padded in disjoint groups
- public static class Test6 {
- @Contended private int int1;
- @Contended("diffGroup2") private int int2;
- }
-
- // fields are padded in the singular group
- @Contended
- public static class Test7 {
- private int int1;
- private int int2;
- }
-
- // all fields are padded as the group, and one field is padded specifically
- @Contended
- public static class Test8 {
- @Contended private int int1;
- private int int2;
- }
-
- // all fields are padded as the group, and one field is padded specifically
- @Contended
- public static class Test9 {
- @Contended("group") private int int1;
- private int int2;
- }
-
-}
-