1.1 --- a/test/runtime/8003985/Test8003985.java Sat May 18 20:41:01 2013 -0700
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,302 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
1.6 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 - *
1.8 - * This code is free software; you can redistribute it and/or modify it
1.9 - * under the terms of the GNU General Public License version 2 only, as
1.10 - * published by the Free Software Foundation.
1.11 - *
1.12 - * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 - * version 2 for more details (a copy is included in the LICENSE file that
1.16 - * accompanied this code).
1.17 - *
1.18 - * You should have received a copy of the GNU General Public License version
1.19 - * 2 along with this work; if not, write to the Free Software Foundation,
1.20 - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 - *
1.22 - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 - * or visit www.oracle.com if you need additional information or have any
1.24 - * questions.
1.25 - */
1.26 -
1.27 -import java.io.BufferedReader;
1.28 -import java.io.InputStreamReader;
1.29 -import java.lang.Class;
1.30 -import java.lang.String;
1.31 -import java.lang.System;
1.32 -import java.lang.management.ManagementFactory;
1.33 -import java.lang.management.RuntimeMXBean;
1.34 -import java.util.ArrayList;
1.35 -import java.util.List;
1.36 -import java.util.concurrent.CyclicBarrier;
1.37 -import java.util.regex.Matcher;
1.38 -import java.util.regex.Pattern;
1.39 -import java.lang.reflect.Field;
1.40 -import java.lang.reflect.Modifier;
1.41 -import sun.misc.Unsafe;
1.42 -import sun.misc.Contended;
1.43 -
1.44 -/*
1.45 - * @test
1.46 - * @bug 8003985
1.47 - * @summary Support Contended Annotation - JEP 142
1.48 - *
1.49 - * @run main/othervm -XX:-RestrictContended Test8003985
1.50 - */
1.51 -public class Test8003985 {
1.52 -
1.53 - private static final Unsafe U;
1.54 - private static int ADDRESS_SIZE;
1.55 - private static int HEADER_SIZE;
1.56 -
1.57 - static {
1.58 - // steal Unsafe
1.59 - try {
1.60 - Field unsafe = Unsafe.class.getDeclaredField("theUnsafe");
1.61 - unsafe.setAccessible(true);
1.62 - U = (Unsafe) unsafe.get(null);
1.63 - } catch (NoSuchFieldException | IllegalAccessException e) {
1.64 - throw new IllegalStateException(e);
1.65 - }
1.66 -
1.67 - // When running with CompressedOops on 64-bit platform, the address size
1.68 - // reported by Unsafe is still 8, while the real reference fields are 4 bytes long.
1.69 - // Try to guess the reference field size with this naive trick.
1.70 - try {
1.71 - long off1 = U.objectFieldOffset(CompressedOopsClass.class.getField("obj1"));
1.72 - long off2 = U.objectFieldOffset(CompressedOopsClass.class.getField("obj2"));
1.73 - ADDRESS_SIZE = (int) Math.abs(off2 - off1);
1.74 - HEADER_SIZE = (int) Math.min(off1, off2);
1.75 - } catch (NoSuchFieldException e) {
1.76 - ADDRESS_SIZE = -1;
1.77 - }
1.78 - }
1.79 -
1.80 - static class CompressedOopsClass {
1.81 - public Object obj1;
1.82 - public Object obj2;
1.83 - }
1.84 -
1.85 - public static boolean arePaddedPairwise(Class klass, String field1, String field2) throws Exception {
1.86 - Field f1 = klass.getDeclaredField(field1);
1.87 - Field f2 = klass.getDeclaredField(field2);
1.88 -
1.89 - if (isStatic(f1) != isStatic(f2)) {
1.90 - return true; // these guys are in naturally disjoint locations
1.91 - }
1.92 -
1.93 - int diff = offset(f1) - offset(f2);
1.94 - if (diff < 0) {
1.95 - // f1 is first
1.96 - return (offset(f2) - (offset(f1) + getSize(f1))) > 64;
1.97 - } else {
1.98 - // f2 is first
1.99 - return (offset(f1) - (offset(f2) + getSize(f2))) > 64;
1.100 - }
1.101 - }
1.102 -
1.103 - public static boolean isPadded(Class klass, String field1) throws Exception {
1.104 - Field f1 = klass.getDeclaredField(field1);
1.105 -
1.106 - if (isStatic(f1)) {
1.107 - return offset(f1) > 128 + 64;
1.108 - }
1.109 -
1.110 - return offset(f1) > 64;
1.111 - }
1.112 -
1.113 - public static boolean sameLayout(Class klass1, Class klass2) throws Exception {
1.114 - for (Field f1 : klass1.getDeclaredFields()) {
1.115 - Field f2 = klass2.getDeclaredField(f1.getName());
1.116 - if (offset(f1) != offset(f2)) {
1.117 - return false;
1.118 - }
1.119 - }
1.120 -
1.121 - for (Field f2 : klass1.getDeclaredFields()) {
1.122 - Field f1 = klass2.getDeclaredField(f2.getName());
1.123 - if (offset(f1) != offset(f2)) {
1.124 - return false;
1.125 - }
1.126 - }
1.127 -
1.128 - return true;
1.129 - }
1.130 -
1.131 - public static boolean isStatic(Field field) {
1.132 - return Modifier.isStatic(field.getModifiers());
1.133 - }
1.134 -
1.135 - public static int offset(Field field) {
1.136 - if (isStatic(field)) {
1.137 - return (int) U.staticFieldOffset(field);
1.138 - } else {
1.139 - return (int) U.objectFieldOffset(field);
1.140 - }
1.141 - }
1.142 -
1.143 - public static int getSize(Field field) {
1.144 - Class type = field.getType();
1.145 - if (type == byte.class) { return 1; }
1.146 - if (type == boolean.class) { return 1; }
1.147 - if (type == short.class) { return 2; }
1.148 - if (type == char.class) { return 2; }
1.149 - if (type == int.class) { return 4; }
1.150 - if (type == float.class) { return 4; }
1.151 - if (type == long.class) { return 8; }
1.152 - if (type == double.class) { return 8; }
1.153 - return ADDRESS_SIZE;
1.154 - }
1.155 -
1.156 - public static void main(String[] args) throws Exception {
1.157 - boolean endResult = true;
1.158 -
1.159 - // --------------- INSTANCE FIELDS ---------------------
1.160 -
1.161 - if (arePaddedPairwise(Test1.class, "int1", "int2") ||
1.162 - isPadded(Test1.class, "int1") ||
1.163 - isPadded(Test1.class, "int2")) {
1.164 - System.err.println("Test1 failed");
1.165 - endResult &= false;
1.166 - }
1.167 -
1.168 - if (!arePaddedPairwise(Test2.class, "int1", "int2") ||
1.169 - !isPadded(Test2.class, "int1") ||
1.170 - isPadded(Test2.class, "int2")) {
1.171 - System.err.println("Test2 failed");
1.172 - endResult &= false;
1.173 - }
1.174 -
1.175 - if (!arePaddedPairwise(Test3.class, "int1", "int2") ||
1.176 - !isPadded(Test3.class, "int1") ||
1.177 - !isPadded(Test3.class, "int2")) {
1.178 - System.err.println("Test3 failed");
1.179 - endResult &= false;
1.180 - }
1.181 -
1.182 - if (arePaddedPairwise(Test4.class, "int1", "int2") ||
1.183 - !isPadded(Test4.class, "int1") ||
1.184 - !isPadded(Test4.class, "int2")) {
1.185 - System.err.println("Test4 failed");
1.186 - endResult &= false;
1.187 - }
1.188 -
1.189 - if (!arePaddedPairwise(Test5.class, "int1", "int2") ||
1.190 - !isPadded(Test5.class, "int1") ||
1.191 - !isPadded(Test5.class, "int2")) {
1.192 - System.err.println("Test5 failed");
1.193 - endResult &= false;
1.194 - }
1.195 -
1.196 - if (!arePaddedPairwise(Test6.class, "int1", "int2") ||
1.197 - !isPadded(Test6.class, "int1") ||
1.198 - !isPadded(Test6.class, "int2")) {
1.199 - System.err.println("Test6 failed");
1.200 - endResult &= false;
1.201 - }
1.202 -
1.203 - if (arePaddedPairwise(Test7.class, "int1", "int2") ||
1.204 - !isPadded(Test7.class, "int1") ||
1.205 - !isPadded(Test7.class, "int2")) {
1.206 - System.err.println("Test7 failed");
1.207 - endResult &= false;
1.208 - }
1.209 -
1.210 - if (!arePaddedPairwise(Test8.class, "int1", "int2") ||
1.211 - !isPadded(Test8.class, "int1") ||
1.212 - !isPadded(Test8.class, "int2")) {
1.213 - System.err.println("Test8 failed");
1.214 - endResult &= false;
1.215 - }
1.216 -
1.217 - if (!arePaddedPairwise(Test9.class, "int1", "int2") ||
1.218 - !isPadded(Test9.class, "int1") ||
1.219 - !isPadded(Test9.class, "int2")) {
1.220 - System.err.println("Test9 failed");
1.221 - endResult &= false;
1.222 - }
1.223 -
1.224 - if (!sameLayout(Test4.class, Test7.class)) {
1.225 - System.err.println("Test4 and Test7 have different layouts");
1.226 - endResult &= false;
1.227 - }
1.228 -
1.229 - if (!sameLayout(Test5.class, Test6.class)) {
1.230 - System.err.println("Test5 and Test6 have different layouts");
1.231 - endResult &= false;
1.232 - }
1.233 -
1.234 - if (!sameLayout(Test8.class, Test9.class)) {
1.235 - System.err.println("Test8 and Test9 have different layouts");
1.236 - endResult &= false;
1.237 - }
1.238 -
1.239 - System.out.println(endResult ? "Test PASSES" : "Test FAILS");
1.240 - if (!endResult) {
1.241 - throw new Error("Test failed");
1.242 - }
1.243 - }
1.244 -
1.245 - // ----------------------------------- INSTANCE FIELDS -----------------------------------------
1.246 -
1.247 - // naturally packed
1.248 - public static class Test1 {
1.249 - private int int1;
1.250 - private int int2;
1.251 - }
1.252 -
1.253 - // int1 is padded
1.254 - public static class Test2 {
1.255 - @Contended private int int1;
1.256 - private int int2;
1.257 - }
1.258 -
1.259 - // both fields are padded
1.260 - public static class Test3 {
1.261 - @Contended private int int1;
1.262 - @Contended private int int2;
1.263 - }
1.264 -
1.265 - // fields are padded in the singular group
1.266 - public static class Test4 {
1.267 - @Contended("sameGroup") private int int1;
1.268 - @Contended("sameGroup") private int int2;
1.269 - }
1.270 -
1.271 - // fields are padded in disjoint groups
1.272 - public static class Test5 {
1.273 - @Contended("diffGroup1") private int int1;
1.274 - @Contended("diffGroup2") private int int2;
1.275 - }
1.276 -
1.277 - // fields are padded in disjoint groups
1.278 - public static class Test6 {
1.279 - @Contended private int int1;
1.280 - @Contended("diffGroup2") private int int2;
1.281 - }
1.282 -
1.283 - // fields are padded in the singular group
1.284 - @Contended
1.285 - public static class Test7 {
1.286 - private int int1;
1.287 - private int int2;
1.288 - }
1.289 -
1.290 - // all fields are padded as the group, and one field is padded specifically
1.291 - @Contended
1.292 - public static class Test8 {
1.293 - @Contended private int int1;
1.294 - private int int2;
1.295 - }
1.296 -
1.297 - // all fields are padded as the group, and one field is padded specifically
1.298 - @Contended
1.299 - public static class Test9 {
1.300 - @Contended("group") private int int1;
1.301 - private int int2;
1.302 - }
1.303 -
1.304 -}
1.305 -
