/* * Copyright (c) 2014, 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. /** * @test * @bug 8048209 * @summary Check that Collections.synchronizedNavigableSet().tailSet() is using * the same lock object as it's source. * @modules java.base/java.util:open * @run testng SyncSubMutexes import java.lang.reflect.Field;import java.util.*;import java.util.Set;import java.util.Arrays;import org.testng.annotations.Test;import org.testng.annotations.DataProvider;import static org.testng.Assert .assertSame;public class SyncSubMutexes {"Collections" )public void testCollections(Collection<String> instance) {// nothing to test, no subset methods "Lists" )public void testLists(List<String> instance) {instance));"Sets" )public void testSets(Set<String> instance) {// nothing to test, no subset methods "SortedSets" )public void testSortedSets(SortedSet<String> instance) {"Echo" )), getSyncCollectionMutex(instance));"Charlie" )), getSyncCollectionMutex(instance));"Charlie" , "Echo" )), getSyncCollectionMutex(instance));"NavigableSets" )public void testNavigableSets(NavigableSet<String> instance) {ex(instance));"Echo" )), getSyncCollectionMutex(instance));"Echo" , true )), getSyncCollectionMutex(instance));"Charlie" )), getSyncCollectionMutex(instance));"Charlie" , true )), getSyncCollectionMutex(instance));"Charlie" , "Echo" )), getSyncCollectionMutex(instance));"Charlie" , true , "Echo" , true )), getSyncCollectionMutex(instance));"Maps" )public void testMaps(Map<String, String> instance) {);"SortedMaps" )public void testSortedMaps(SortedMap<String, String> instance) {);"Echo" )), getSyncMapMutex(instance));"Charlie" )), getSyncMapMutex(instance));"Charlie" , "Echo" )), getSyncMapMutex(instance));"NavigableMaps" )public void testNavigableMaps(NavigableMap<String, String> instance) {);nstance));"Echo" )), getSyncMapMutex(instance));"Echo" , true )), getSyncMapMutex(instance));"Charlie" )), getSyncMapMutex(instance));"Charlie" , true )), getSyncMapMutex(instance));"Charlie" , true , "Echo" , true )), getSyncMapMutex(instance));"Charlie" , true , "Echo" , true )), getSyncMapMutex(instance));"Collections" , parallel = true )public static Iterator<Object[]> collectionProvider() {return makeCollections().iterator();"Lists" , parallel = true )public static Iterator<Object[]> listProvider() {return makeLists().iterator();"Sets" , parallel = true )public static Iterator<Object[]> setProvider() {return makeSets().iterator();"SortedSets" , parallel = true )public static Iterator<Object[]> sortedsetProvider() {return makeSortedSets().iterator();"NavigableSets" , parallel = true )public static Iterator<Object[]> navigablesetProvider() {return makeNavigableSets().iterator();"Maps" , parallel = true )public static Iterator<Object[]> mapProvider() {return makeMaps().iterator();"SortedMaps" , parallel = true )public static Iterator<Object[]> sortedmapProvider() {return makeSortedMaps().iterator();"NavigableMaps" , parallel = true )public static Iterator<Object[]> navigablemapProvider() {return makeNavigableMaps().iterator();private static final Collection<String> BASE_COLLECTION = Collections.unmodifiableCollection("Alpha" , "Bravo" , "Charlie" , "Delta" , "Echo" , "Foxtrot" , "Golf" )private static final Map<String, String> BASE_MAP;static {new HashMap<>();for (String each : BASE_COLLECTION) {"*" + each + "*" );public static Collection<Object[]> makeCollections() {new ArrayList<>();new Object[] {Collections.synchronizedCollection(new ArrayList<>(BASE_COLLECTION))});return instances;public static Collection<Object[]> makeLists() {new ArrayList<>();new Object[] {Collections.synchronizedList(new ArrayList<>(BASE_COLLECTION))});new Object[] {Collections.synchronizedList(new ArrayList<>(BASE_COLLECTION)).subList(1, 2)});return instances;public static Collection<Object[]> makeSets() {new ArrayList<>();new Object[] {Collections.synchronizedSet(new TreeSet<>(BASE_COLLECTION))});return instances;public static Collection<Object[]> makeSortedSets() {new ArrayList<>();new Object[] {Collections.synchronizedSortedSet(new TreeSet<>(BASE_COLLECTION))});new Object[] {Collections.synchronizedSortedSet(new TreeSet<>(BASE_COLLECTION)).headSet("Foxtrot" )});new Object[] {Collections.synchronizedSortedSet(new TreeSet<>(BASE_COLLECTION)).tailSet("Bravo" )});new Object[] {Collections.synchronizedSortedSet(new TreeSet<>(BASE_COLLECTION)).subSet("Bravo" , "Foxtrot" )});return instances;public static Collection<Object[]> makeNavigableSets() {new ArrayList<>();new Object[] {Collections.synchronizedNavigableSet(new TreeSet<>(BASE_COLLECTION))});new Object[] {Collections.synchronizedNavigableSet(new TreeSet<>(BASE_COLLECTION)).descendingSet().descendingSet()});new Object[] {Collections.synchronizedNavigableSet(new TreeSet<>(BASE_COLLECTION)).headSet("Foxtrot" )});new Object[] {Collections.synchronizedNavigableSet(new TreeSet<>(BASE_COLLECTION)).headSet("Foxtrot" , true )});new Object[] {Collections.synchronizedNavigableSet(new TreeSet<>(BASE_COLLECTION)).tailSet("Bravo" )});new Object[] {Collections.synchronizedNavigableSet(new TreeSet<>(BASE_COLLECTION)).tailSet("Bravo" , true )});new Object[] {Collections.synchronizedNavigableSet(new TreeSet<>(BASE_COLLECTION)).subSet("Bravo" , "Foxtrot" )});new Object[] {Collections.synchronizedNavigableSet(new TreeSet<>(BASE_COLLECTION)).subSet("Bravo" , true , "Foxtrot" , true )});return instances;public static Collection<Object[]> makeMaps() {new ArrayList<>();new Object[] {Collections.synchronizedMap(new HashMap<>(BASE_MAP))});return instances;public static Collection<Object[]> makeSortedMaps() {new ArrayList<>();new Object[] {Collections.synchronizedSortedMap(new TreeMap<>(BASE_MAP))});new Object[] {Collections.synchronizedSortedMap(new TreeMap<>(BASE_MAP)).headMap("Foxtrot" )});new Object[] {Collections.synchronizedSortedMap(new TreeMap<>(BASE_MAP)).tailMap("Bravo" )});new Object[] {Collections.synchronizedSortedMap(new TreeMap<>(BASE_MAP)).subMap("Bravo" , "Foxtrot" )});return instances;public static Collection<Object[]> makeNavigableMaps() {new ArrayList<>();new Object[] {Collections.synchronizedNavigableMap(new TreeMap<>(BASE_MAP))});new Object[] {Collections.synchronizedNavigableMap(new TreeMap<>(BASE_MAP).descendingMap().descendingMap())});new Object[] {Collections.synchronizedNavigableMap(new TreeMap<>(BASE_MAP)).headMap("Foxtrot" )});new Object[] {Collections.synchronizedNavigableMap(new TreeMap<>(BASE_MAP)).headMap("Foxtrot" , true )});new Object[] {Collections.synchronizedNavigableMap(new TreeMap<>(BASE_MAP)).tailMap("Bravo" )});new Object[] {Collections.synchronizedNavigableMap(new TreeMap<>(BASE_MAP)).tailMap("Bravo" , true )});new Object[] {Collections.synchronizedNavigableMap(new TreeMap<>(BASE_MAP)).subMap("Bravo" , "Foxtrot" )});new Object[] {Collections.synchronizedNavigableMap(new TreeMap<>(BASE_MAP)).subMap("Bravo" , true , "Foxtrot" , true )});return instances;private static Object getSyncCollectionMutex(Collection<?> from) {try {Class <?> synchronizedCollectionClazz = Class .forName("java.util.Collections$SynchronizedCollection" );"mutex" );true );return f.get(from);catch ( ClassNotFoundException | NoSuchFieldException | IllegalAccessException e) {throw new RuntimeException("Unable to get mutex field." , e);private static Object getSyncMapMutex(Map<?,?> from) {try {Class <?> synchronizedMapClazz = Class .forName("java.util.Collections$SynchronizedMap" );"mutex" );true );return f.get(from);catch ( ClassNotFoundException | NoSuchFieldException | IllegalAccessException e) {throw new RuntimeException("Unable to get mutex field." , e);quality 97%
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