Mercurial > jdk8-mips64-public > hotspot / changeset
changeset
8014871: Move @Contended regression tests to the same place
Mon, 20 May 2013 15:43:50 +0400
- author
- shade
- date
- Mon, 20 May 2013 15:43:50 +0400
- changeset 5145
- 5e3573e08a83
- parent 5144
- a5d6f0c3585f
- child 5146
- bbddfb08190f
8014871: Move @Contended regression tests to the same place
Summary: Move the missing test to appropriate location.
Reviewed-by: dholmes, sla
| test/runtime/8003985/Test8003985.java | file | annotate | diff | comparison | revisions | |
| test/runtime/contended/Basic.java | file | annotate | diff | comparison | revisions |
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 -
2.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 2.2 +++ b/test/runtime/contended/Basic.java Mon May 20 15:43:50 2013 +0400 2.3 @@ -0,0 +1,302 @@ 2.4 +/* 2.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 2.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 2.7 + * 2.8 + * This code is free software; you can redistribute it and/or modify it 2.9 + * under the terms of the GNU General Public License version 2 only, as 2.10 + * published by the Free Software Foundation. 2.11 + * 2.12 + * This code is distributed in the hope that it will be useful, but WITHOUT 2.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 2.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 2.15 + * version 2 for more details (a copy is included in the LICENSE file that 2.16 + * accompanied this code). 2.17 + * 2.18 + * You should have received a copy of the GNU General Public License version 2.19 + * 2 along with this work; if not, write to the Free Software Foundation, 2.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2.21 + * 2.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2.23 + * or visit www.oracle.com if you need additional information or have any 2.24 + * questions. 2.25 + */ 2.26 + 2.27 +import java.io.BufferedReader; 2.28 +import java.io.InputStreamReader; 2.29 +import java.lang.Class; 2.30 +import java.lang.String; 2.31 +import java.lang.System; 2.32 +import java.lang.management.ManagementFactory; 2.33 +import java.lang.management.RuntimeMXBean; 2.34 +import java.util.ArrayList; 2.35 +import java.util.List; 2.36 +import java.util.concurrent.CyclicBarrier; 2.37 +import java.util.regex.Matcher; 2.38 +import java.util.regex.Pattern; 2.39 +import java.lang.reflect.Field; 2.40 +import java.lang.reflect.Modifier; 2.41 +import sun.misc.Unsafe; 2.42 +import sun.misc.Contended; 2.43 + 2.44 +/* 2.45 + * @test 2.46 + * @bug 8003985 2.47 + * @summary Support Contended Annotation - JEP 142 2.48 + * 2.49 + * @run main/othervm -XX:-RestrictContended Basic 2.50 + */ 2.51 +public class Basic { 2.52 + 2.53 + private static final Unsafe U; 2.54 + private static int ADDRESS_SIZE; 2.55 + private static int HEADER_SIZE; 2.56 + 2.57 + static { 2.58 + // steal Unsafe 2.59 + try { 2.60 + Field unsafe = Unsafe.class.getDeclaredField("theUnsafe"); 2.61 + unsafe.setAccessible(true); 2.62 + U = (Unsafe) unsafe.get(null); 2.63 + } catch (NoSuchFieldException | IllegalAccessException e) { 2.64 + throw new IllegalStateException(e); 2.65 + } 2.66 + 2.67 + // When running with CompressedOops on 64-bit platform, the address size 2.68 + // reported by Unsafe is still 8, while the real reference fields are 4 bytes long. 2.69 + // Try to guess the reference field size with this naive trick. 2.70 + try { 2.71 + long off1 = U.objectFieldOffset(CompressedOopsClass.class.getField("obj1")); 2.72 + long off2 = U.objectFieldOffset(CompressedOopsClass.class.getField("obj2")); 2.73 + ADDRESS_SIZE = (int) Math.abs(off2 - off1); 2.74 + HEADER_SIZE = (int) Math.min(off1, off2); 2.75 + } catch (NoSuchFieldException e) { 2.76 + ADDRESS_SIZE = -1; 2.77 + } 2.78 + } 2.79 + 2.80 + static class CompressedOopsClass { 2.81 + public Object obj1; 2.82 + public Object obj2; 2.83 + } 2.84 + 2.85 + public static boolean arePaddedPairwise(Class klass, String field1, String field2) throws Exception { 2.86 + Field f1 = klass.getDeclaredField(field1); 2.87 + Field f2 = klass.getDeclaredField(field2); 2.88 + 2.89 + if (isStatic(f1) != isStatic(f2)) { 2.90 + return true; // these guys are in naturally disjoint locations 2.91 + } 2.92 + 2.93 + int diff = offset(f1) - offset(f2); 2.94 + if (diff < 0) { 2.95 + // f1 is first 2.96 + return (offset(f2) - (offset(f1) + getSize(f1))) > 64; 2.97 + } else { 2.98 + // f2 is first 2.99 + return (offset(f1) - (offset(f2) + getSize(f2))) > 64; 2.100 + } 2.101 + } 2.102 + 2.103 + public static boolean isPadded(Class klass, String field1) throws Exception { 2.104 + Field f1 = klass.getDeclaredField(field1); 2.105 + 2.106 + if (isStatic(f1)) { 2.107 + return offset(f1) > 128 + 64; 2.108 + } 2.109 + 2.110 + return offset(f1) > 64; 2.111 + } 2.112 + 2.113 + public static boolean sameLayout(Class klass1, Class klass2) throws Exception { 2.114 + for (Field f1 : klass1.getDeclaredFields()) { 2.115 + Field f2 = klass2.getDeclaredField(f1.getName()); 2.116 + if (offset(f1) != offset(f2)) { 2.117 + return false; 2.118 + } 2.119 + } 2.120 + 2.121 + for (Field f2 : klass1.getDeclaredFields()) { 2.122 + Field f1 = klass2.getDeclaredField(f2.getName()); 2.123 + if (offset(f1) != offset(f2)) { 2.124 + return false; 2.125 + } 2.126 + } 2.127 + 2.128 + return true; 2.129 + } 2.130 + 2.131 + public static boolean isStatic(Field field) { 2.132 + return Modifier.isStatic(field.getModifiers()); 2.133 + } 2.134 + 2.135 + public static int offset(Field field) { 2.136 + if (isStatic(field)) { 2.137 + return (int) U.staticFieldOffset(field); 2.138 + } else { 2.139 + return (int) U.objectFieldOffset(field); 2.140 + } 2.141 + } 2.142 + 2.143 + public static int getSize(Field field) { 2.144 + Class type = field.getType(); 2.145 + if (type == byte.class) { return 1; } 2.146 + if (type == boolean.class) { return 1; } 2.147 + if (type == short.class) { return 2; } 2.148 + if (type == char.class) { return 2; } 2.149 + if (type == int.class) { return 4; } 2.150 + if (type == float.class) { return 4; } 2.151 + if (type == long.class) { return 8; } 2.152 + if (type == double.class) { return 8; } 2.153 + return ADDRESS_SIZE; 2.154 + } 2.155 + 2.156 + public static void main(String[] args) throws Exception { 2.157 + boolean endResult = true; 2.158 + 2.159 + // --------------- INSTANCE FIELDS --------------------- 2.160 + 2.161 + if (arePaddedPairwise(Test1.class, "int1", "int2") || 2.162 + isPadded(Test1.class, "int1") || 2.163 + isPadded(Test1.class, "int2")) { 2.164 + System.err.println("Test1 failed"); 2.165 + endResult &= false; 2.166 + } 2.167 + 2.168 + if (!arePaddedPairwise(Test2.class, "int1", "int2") || 2.169 + !isPadded(Test2.class, "int1") || 2.170 + isPadded(Test2.class, "int2")) { 2.171 + System.err.println("Test2 failed"); 2.172 + endResult &= false; 2.173 + } 2.174 + 2.175 + if (!arePaddedPairwise(Test3.class, "int1", "int2") || 2.176 + !isPadded(Test3.class, "int1") || 2.177 + !isPadded(Test3.class, "int2")) { 2.178 + System.err.println("Test3 failed"); 2.179 + endResult &= false; 2.180 + } 2.181 + 2.182 + if (arePaddedPairwise(Test4.class, "int1", "int2") || 2.183 + !isPadded(Test4.class, "int1") || 2.184 + !isPadded(Test4.class, "int2")) { 2.185 + System.err.println("Test4 failed"); 2.186 + endResult &= false; 2.187 + } 2.188 + 2.189 + if (!arePaddedPairwise(Test5.class, "int1", "int2") || 2.190 + !isPadded(Test5.class, "int1") || 2.191 + !isPadded(Test5.class, "int2")) { 2.192 + System.err.println("Test5 failed"); 2.193 + endResult &= false; 2.194 + } 2.195 + 2.196 + if (!arePaddedPairwise(Test6.class, "int1", "int2") || 2.197 + !isPadded(Test6.class, "int1") || 2.198 + !isPadded(Test6.class, "int2")) { 2.199 + System.err.println("Test6 failed"); 2.200 + endResult &= false; 2.201 + } 2.202 + 2.203 + if (arePaddedPairwise(Test7.class, "int1", "int2") || 2.204 + !isPadded(Test7.class, "int1") || 2.205 + !isPadded(Test7.class, "int2")) { 2.206 + System.err.println("Test7 failed"); 2.207 + endResult &= false; 2.208 + } 2.209 + 2.210 + if (!arePaddedPairwise(Test8.class, "int1", "int2") || 2.211 + !isPadded(Test8.class, "int1") || 2.212 + !isPadded(Test8.class, "int2")) { 2.213 + System.err.println("Test8 failed"); 2.214 + endResult &= false; 2.215 + } 2.216 + 2.217 + if (!arePaddedPairwise(Test9.class, "int1", "int2") || 2.218 + !isPadded(Test9.class, "int1") || 2.219 + !isPadded(Test9.class, "int2")) { 2.220 + System.err.println("Test9 failed"); 2.221 + endResult &= false; 2.222 + } 2.223 + 2.224 + if (!sameLayout(Test4.class, Test7.class)) { 2.225 + System.err.println("Test4 and Test7 have different layouts"); 2.226 + endResult &= false; 2.227 + } 2.228 + 2.229 + if (!sameLayout(Test5.class, Test6.class)) { 2.230 + System.err.println("Test5 and Test6 have different layouts"); 2.231 + endResult &= false; 2.232 + } 2.233 + 2.234 + if (!sameLayout(Test8.class, Test9.class)) { 2.235 + System.err.println("Test8 and Test9 have different layouts"); 2.236 + endResult &= false; 2.237 + } 2.238 + 2.239 + System.out.println(endResult ? "Test PASSES" : "Test FAILS"); 2.240 + if (!endResult) { 2.241 + throw new Error("Test failed"); 2.242 + } 2.243 + } 2.244 + 2.245 + // ----------------------------------- INSTANCE FIELDS ----------------------------------------- 2.246 + 2.247 + // naturally packed 2.248 + public static class Test1 { 2.249 + private int int1; 2.250 + private int int2; 2.251 + } 2.252 + 2.253 + // int1 is padded 2.254 + public static class Test2 { 2.255 + @Contended private int int1; 2.256 + private int int2; 2.257 + } 2.258 + 2.259 + // both fields are padded 2.260 + public static class Test3 { 2.261 + @Contended private int int1; 2.262 + @Contended private int int2; 2.263 + } 2.264 + 2.265 + // fields are padded in the singular group 2.266 + public static class Test4 { 2.267 + @Contended("sameGroup") private int int1; 2.268 + @Contended("sameGroup") private int int2; 2.269 + } 2.270 + 2.271 + // fields are padded in disjoint groups 2.272 + public static class Test5 { 2.273 + @Contended("diffGroup1") private int int1; 2.274 + @Contended("diffGroup2") private int int2; 2.275 + } 2.276 + 2.277 + // fields are padded in disjoint groups 2.278 + public static class Test6 { 2.279 + @Contended private int int1; 2.280 + @Contended("diffGroup2") private int int2; 2.281 + } 2.282 + 2.283 + // fields are padded in the singular group 2.284 + @Contended 2.285 + public static class Test7 { 2.286 + private int int1; 2.287 + private int int2; 2.288 + } 2.289 + 2.290 + // all fields are padded as the group, and one field is padded specifically 2.291 + @Contended 2.292 + public static class Test8 { 2.293 + @Contended private int int1; 2.294 + private int int2; 2.295 + } 2.296 + 2.297 + // all fields are padded as the group, and one field is padded specifically 2.298 + @Contended 2.299 + public static class Test9 { 2.300 + @Contended("group") private int int1; 2.301 + private int int2; 2.302 + } 2.303 + 2.304 +} 2.305 +
