author | martin |
Tue, 15 Sep 2015 21:56:04 -0700 | |
changeset 32649 | 2ee9017c7597 |
parent 19423 | 19249161b340 |
child 43792 | 05d6b8f2eff5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/** |
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* @test |
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* @bug 8005698 |
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* @run testng SpliteratorCollisions |
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* @summary Spliterator traversing and splitting hash maps containing colliding hashes |
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* @author Brent Christian |
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*/ |
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import org.testng.annotations.DataProvider; |
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import org.testng.annotations.Test; |
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import java.util.ArrayDeque; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Deque; |
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import java.util.HashMap; |
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import java.util.HashSet; |
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import java.util.LinkedHashMap; |
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import java.util.LinkedHashSet; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Spliterator; |
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import java.util.TreeSet; |
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import java.util.function.Consumer; |
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import java.util.function.Function; |
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import java.util.function.Supplier; |
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import java.util.function.UnaryOperator; |
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import static org.testng.Assert.*; |
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import static org.testng.Assert.assertEquals; |
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@Test |
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public class SpliteratorCollisions { |
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private static List<Integer> SIZES = Arrays.asList(0, 1, 10, 100, 1000); |
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private static class SpliteratorDataBuilder<T> { |
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List<Object[]> data; |
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List<T> exp; |
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Map<T, T> mExp; |
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SpliteratorDataBuilder(List<Object[]> data, List<T> exp) { |
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this.data = data; |
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this.exp = exp; |
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this.mExp = createMap(exp); |
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} |
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Map<T, T> createMap(List<T> l) { |
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Map<T, T> m = new LinkedHashMap<>(); |
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for (T t : l) { |
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m.put(t, t); |
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} |
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return m; |
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} |
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void add(String description, Collection<?> expected, Supplier<Spliterator<?>> s) { |
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description = joiner(description).toString(); |
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data.add(new Object[]{description, expected, s}); |
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} |
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void add(String description, Supplier<Spliterator<?>> s) { |
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add(description, exp, s); |
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} |
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void addCollection(Function<Collection<T>, ? extends Collection<T>> c) { |
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add("new " + c.apply(Collections.<T>emptyList()).getClass().getName() + ".spliterator()", |
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() -> c.apply(exp).spliterator()); |
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} |
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void addList(Function<Collection<T>, ? extends List<T>> l) { |
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// @@@ If collection is instance of List then add sub-list tests |
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addCollection(l); |
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} |
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void addMap(Function<Map<T, T>, ? extends Map<T, T>> m) { |
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String description = "new " + m.apply(Collections.<T, T>emptyMap()).getClass().getName(); |
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add(description + ".keySet().spliterator()", () -> m.apply(mExp).keySet().spliterator()); |
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add(description + ".values().spliterator()", () -> m.apply(mExp).values().spliterator()); |
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add(description + ".entrySet().spliterator()", mExp.entrySet(), () -> m.apply(mExp).entrySet().spliterator()); |
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} |
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StringBuilder joiner(String description) { |
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return new StringBuilder(description). |
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append(" {"). |
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append("size=").append(exp.size()). |
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append("}"); |
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} |
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} |
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static Object[][] spliteratorDataProvider; |
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@DataProvider(name = "HashableIntSpliterator") |
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public static Object[][] spliteratorDataProvider() { |
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if (spliteratorDataProvider != null) { |
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return spliteratorDataProvider; |
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} |
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List<Object[]> data = new ArrayList<>(); |
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for (int size : SIZES) { |
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List<HashableInteger> exp = listIntRange(size, false); |
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SpliteratorDataBuilder<HashableInteger> db = new SpliteratorDataBuilder<>(data, exp); |
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// Maps |
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db.addMap(HashMap::new); |
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db.addMap(LinkedHashMap::new); |
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// Collections that use HashMap |
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db.addCollection(HashSet::new); |
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db.addCollection(LinkedHashSet::new); |
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db.addCollection(TreeSet::new); |
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} |
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return spliteratorDataProvider = data.toArray(new Object[0][]); |
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} |
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|
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static Object[][] spliteratorDataProviderWithNull; |
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|
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@DataProvider(name = "HashableIntSpliteratorWithNull") |
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public static Object[][] spliteratorNullDataProvider() { |
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if (spliteratorDataProviderWithNull != null) { |
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return spliteratorDataProviderWithNull; |
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} |
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|
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List<Object[]> data = new ArrayList<>(); |
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for (int size : SIZES) { |
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List<HashableInteger> exp = listIntRange(size, true); |
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SpliteratorDataBuilder<HashableInteger> db = new SpliteratorDataBuilder<>(data, exp); |
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|
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// Maps |
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db.addMap(HashMap::new); |
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db.addMap(LinkedHashMap::new); |
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// TODO: add this back in if we decide to keep TreeBin in WeakHashMap |
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//db.addMap(WeakHashMap::new); |
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|
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// Collections that use HashMap |
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db.addCollection(HashSet::new); |
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db.addCollection(LinkedHashSet::new); |
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// db.addCollection(TreeSet::new); |
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|
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} |
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return spliteratorDataProviderWithNull = data.toArray(new Object[0][]); |
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} |
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|
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static final class HashableInteger implements Comparable<HashableInteger> { |
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final int value; |
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final int hashmask; //yes duplication |
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|
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HashableInteger(int value, int hashmask) { |
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this.value = value; |
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this.hashmask = hashmask; |
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} |
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|
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@Override |
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public boolean equals(Object obj) { |
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if (obj instanceof HashableInteger) { |
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HashableInteger other = (HashableInteger) obj; |
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return other.value == value; |
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} |
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|
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return false; |
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187 |
} |
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|
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@Override |
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public int hashCode() { |
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return value % hashmask; |
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} |
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|
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194 |
@Override |
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public int compareTo(HashableInteger o) { |
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return value - o.value; |
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197 |
} |
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198 |
|
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199 |
@Override |
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200 |
public String toString() { |
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return Integer.toString(value); |
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202 |
} |
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203 |
} |
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204 |
|
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private static List<HashableInteger> listIntRange(int upTo, boolean withNull) { |
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List<HashableInteger> exp = new ArrayList<>(); |
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207 |
if (withNull) { |
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208 |
exp.add(null); |
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209 |
} |
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for (int i = 0; i < upTo; i++) { |
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exp.add(new HashableInteger(i, 10)); |
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212 |
} |
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return Collections.unmodifiableList(exp); |
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214 |
} |
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215 |
|
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216 |
@Test(dataProvider = "HashableIntSpliterator") |
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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public void testNullPointerException(String description, Collection exp, Supplier<Spliterator> s) { |
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executeAndCatch(NullPointerException.class, () -> s.get().forEachRemaining(null)); |
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executeAndCatch(NullPointerException.class, () -> s.get().tryAdvance(null)); |
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221 |
} |
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222 |
|
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223 |
@Test(dataProvider = "HashableIntSpliteratorWithNull") |
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224 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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225 |
public void testNullPointerExceptionWithNull(String description, Collection exp, Supplier<Spliterator> s) { |
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226 |
executeAndCatch(NullPointerException.class, () -> s.get().forEachRemaining(null)); |
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227 |
executeAndCatch(NullPointerException.class, () -> s.get().tryAdvance(null)); |
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228 |
} |
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229 |
|
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230 |
|
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231 |
@Test(dataProvider = "HashableIntSpliterator") |
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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public void testForEach(String description, Collection exp, Supplier<Spliterator> s) { |
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234 |
testForEach(exp, s, (Consumer<Object> b) -> b); |
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235 |
} |
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236 |
|
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@Test(dataProvider = "HashableIntSpliteratorWithNull") |
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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239 |
public void testForEachWithNull(String description, Collection exp, Supplier<Spliterator> s) { |
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240 |
testForEach(exp, s, (Consumer<Object> b) -> b); |
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241 |
} |
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242 |
|
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243 |
|
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244 |
@Test(dataProvider = "HashableIntSpliterator") |
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245 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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246 |
public void testTryAdvance(String description, Collection exp, Supplier<Spliterator> s) { |
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testTryAdvance(exp, s, (Consumer<Object> b) -> b); |
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248 |
} |
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249 |
|
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250 |
@Test(dataProvider = "HashableIntSpliteratorWithNull") |
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251 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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public void testTryAdvanceWithNull(String description, Collection exp, Supplier<Spliterator> s) { |
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253 |
testTryAdvance(exp, s, (Consumer<Object> b) -> b); |
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254 |
} |
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255 |
|
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256 |
/* skip this test until 8013649 is fixed |
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257 |
@Test(dataProvider = "HashableIntSpliterator") |
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258 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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public void testMixedTryAdvanceForEach(String description, Collection exp, Supplier<Spliterator> s) { |
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testMixedTryAdvanceForEach(exp, s, (Consumer<Object> b) -> b); |
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261 |
} |
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262 |
|
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263 |
@Test(dataProvider = "HashableIntSpliteratorWithNull") |
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264 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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265 |
public void testMixedTryAdvanceForEachWithNull(String description, Collection exp, Supplier<Spliterator> s) { |
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testMixedTryAdvanceForEach(exp, s, (Consumer<Object> b) -> b); |
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267 |
} |
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268 |
*/ |
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269 |
|
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270 |
@Test(dataProvider = "HashableIntSpliterator") |
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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public void testSplitAfterFullTraversal(String description, Collection exp, Supplier<Spliterator> s) { |
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testSplitAfterFullTraversal(s, (Consumer<Object> b) -> b); |
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} |
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275 |
|
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@Test(dataProvider = "HashableIntSpliteratorWithNull") |
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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public void testSplitAfterFullTraversalWithNull(String description, Collection exp, Supplier<Spliterator> s) { |
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testSplitAfterFullTraversal(s, (Consumer<Object> b) -> b); |
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280 |
} |
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281 |
|
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282 |
|
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283 |
@Test(dataProvider = "HashableIntSpliterator") |
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284 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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|
285 |
public void testSplitOnce(String description, Collection exp, Supplier<Spliterator> s) { |
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parents:
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|
286 |
testSplitOnce(exp, s, (Consumer<Object> b) -> b); |
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} |
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288 |
|
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289 |
@Test(dataProvider = "HashableIntSpliteratorWithNull") |
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|
290 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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parents:
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|
291 |
public void testSplitOnceWithNull(String description, Collection exp, Supplier<Spliterator> s) { |
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parents:
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|
292 |
testSplitOnce(exp, s, (Consumer<Object> b) -> b); |
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parents:
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|
293 |
} |
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parents:
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|
294 |
|
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|
295 |
@Test(dataProvider = "HashableIntSpliterator") |
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|
296 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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parents:
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|
297 |
public void testSplitSixDeep(String description, Collection exp, Supplier<Spliterator> s) { |
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parents:
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|
298 |
testSplitSixDeep(exp, s, (Consumer<Object> b) -> b); |
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|
299 |
} |
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|
300 |
|
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|
301 |
@Test(dataProvider = "HashableIntSpliteratorWithNull") |
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parents:
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|
302 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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parents:
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|
303 |
public void testSplitSixDeepWithNull(String description, Collection exp, Supplier<Spliterator> s) { |
bd750ec19d82
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parents:
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changeset
|
304 |
testSplitSixDeep(exp, s, (Consumer<Object> b) -> b); |
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parents:
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|
305 |
} |
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parents:
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changeset
|
306 |
|
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parents:
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|
307 |
@Test(dataProvider = "HashableIntSpliterator") |
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parents:
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changeset
|
308 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
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parents:
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|
309 |
public void testSplitUntilNull(String description, Collection exp, Supplier<Spliterator> s) { |
bd750ec19d82
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bchristi
parents:
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changeset
|
310 |
testSplitUntilNull(exp, s, (Consumer<Object> b) -> b); |
bd750ec19d82
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parents:
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|
311 |
} |
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parents:
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changeset
|
312 |
|
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parents:
diff
changeset
|
313 |
@Test(dataProvider = "HashableIntSpliteratorWithNull") |
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bchristi
parents:
diff
changeset
|
314 |
@SuppressWarnings({"unchecked", "rawtypes"}) |
bd750ec19d82
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bchristi
parents:
diff
changeset
|
315 |
public void testSplitUntilNullWithNull(String description, Collection exp, Supplier<Spliterator> s) { |
bd750ec19d82
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bchristi
parents:
diff
changeset
|
316 |
testSplitUntilNull(exp, s, (Consumer<Object> b) -> b); |
bd750ec19d82
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parents:
diff
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|
317 |
} |
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parents:
diff
changeset
|
318 |
|
bd750ec19d82
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parents:
diff
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|
319 |
private static <T, S extends Spliterator<T>> void testForEach( |
bd750ec19d82
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parents:
diff
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|
320 |
Collection<T> exp, |
bd750ec19d82
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bchristi
parents:
diff
changeset
|
321 |
Supplier<S> supplier, |
bd750ec19d82
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parents:
diff
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|
322 |
UnaryOperator<Consumer<T>> boxingAdapter) { |
bd750ec19d82
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parents:
diff
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|
323 |
S spliterator = supplier.get(); |
bd750ec19d82
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bchristi
parents:
diff
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|
324 |
long sizeIfKnown = spliterator.getExactSizeIfKnown(); |
bd750ec19d82
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parents:
diff
changeset
|
325 |
boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED); |
bd750ec19d82
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bchristi
parents:
diff
changeset
|
326 |
|
bd750ec19d82
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parents:
diff
changeset
|
327 |
ArrayList<T> fromForEach = new ArrayList<>(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
328 |
spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
329 |
Consumer<T> addToFromForEach = boxingAdapter.apply(fromForEach::add); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
330 |
spliterator.forEachRemaining(addToFromForEach); |
bd750ec19d82
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bchristi
parents:
diff
changeset
|
331 |
|
bd750ec19d82
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parents:
diff
changeset
|
332 |
// Assert that forEach now produces no elements |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
333 |
spliterator.forEachRemaining(boxingAdapter.apply(e -> fail("Spliterator.forEach produced an element after spliterator exhausted: " + e))); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
334 |
// Assert that tryAdvance now produce no elements |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
335 |
spliterator.tryAdvance(boxingAdapter.apply(e -> fail("Spliterator.tryAdvance produced an element after spliterator exhausted: " + e))); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
336 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
337 |
// assert that size, tryAdvance, and forEach are consistent |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
338 |
if (sizeIfKnown >= 0) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
339 |
assertEquals(sizeIfKnown, exp.size()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
340 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
341 |
if (exp.contains(null)) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
342 |
assertTrue(fromForEach.contains(null)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
343 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
344 |
assertEquals(fromForEach.size(), exp.size()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
345 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
346 |
assertContents(fromForEach, exp, isOrdered); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
347 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
348 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
349 |
private static <T, S extends Spliterator<T>> void testTryAdvance( |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
350 |
Collection<T> exp, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
351 |
Supplier<S> supplier, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
352 |
UnaryOperator<Consumer<T>> boxingAdapter) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
353 |
S spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
354 |
long sizeIfKnown = spliterator.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
355 |
boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
356 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
357 |
spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
358 |
ArrayList<T> fromTryAdvance = new ArrayList<>(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
359 |
Consumer<T> addToFromTryAdvance = boxingAdapter.apply(fromTryAdvance::add); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
360 |
while (spliterator.tryAdvance(addToFromTryAdvance)) { } |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
361 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
362 |
// Assert that forEach now produces no elements |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
363 |
spliterator.forEachRemaining(boxingAdapter.apply(e -> fail("Spliterator.forEach produced an element after spliterator exhausted: " + e))); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
364 |
// Assert that tryAdvance now produce no elements |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
365 |
spliterator.tryAdvance(boxingAdapter.apply(e -> fail("Spliterator.tryAdvance produced an element after spliterator exhausted: " + e))); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
366 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
367 |
// assert that size, tryAdvance, and forEach are consistent |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
368 |
if (sizeIfKnown >= 0) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
369 |
assertEquals(sizeIfKnown, exp.size()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
370 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
371 |
assertEquals(fromTryAdvance.size(), exp.size()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
372 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
373 |
assertContents(fromTryAdvance, exp, isOrdered); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
374 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
375 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
376 |
private static <T, S extends Spliterator<T>> void testMixedTryAdvanceForEach( |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
377 |
Collection<T> exp, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
378 |
Supplier<S> supplier, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
379 |
UnaryOperator<Consumer<T>> boxingAdapter) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
380 |
S spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
381 |
long sizeIfKnown = spliterator.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
382 |
boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
383 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
384 |
// tryAdvance first few elements, then forEach rest |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
385 |
ArrayList<T> dest = new ArrayList<>(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
386 |
spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
387 |
Consumer<T> addToDest = boxingAdapter.apply(dest::add); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
388 |
for (int i = 0; i < 10 && spliterator.tryAdvance(addToDest); i++) { } |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
389 |
spliterator.forEachRemaining(addToDest); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
390 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
391 |
// Assert that forEach now produces no elements |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
392 |
spliterator.forEachRemaining(boxingAdapter.apply(e -> fail("Spliterator.forEach produced an element after spliterator exhausted: " + e))); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
393 |
// Assert that tryAdvance now produce no elements |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
394 |
spliterator.tryAdvance(boxingAdapter.apply(e -> fail("Spliterator.tryAdvance produced an element after spliterator exhausted: " + e))); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
395 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
396 |
if (sizeIfKnown >= 0) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
397 |
assertEquals(sizeIfKnown, dest.size()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
398 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
399 |
assertEquals(dest.size(), exp.size()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
400 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
401 |
if (isOrdered) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
402 |
assertEquals(dest, exp); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
403 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
404 |
else { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
405 |
assertContentsUnordered(dest, exp); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
406 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
407 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
408 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
409 |
private static <T, S extends Spliterator<T>> void testSplitAfterFullTraversal( |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
410 |
Supplier<S> supplier, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
411 |
UnaryOperator<Consumer<T>> boxingAdapter) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
412 |
// Full traversal using tryAdvance |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
413 |
Spliterator<T> spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
414 |
while (spliterator.tryAdvance(boxingAdapter.apply(e -> { }))) { } |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
415 |
Spliterator<T> split = spliterator.trySplit(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
416 |
assertNull(split); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
417 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
418 |
// Full traversal using forEach |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
419 |
spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
420 |
spliterator.forEachRemaining(boxingAdapter.apply(e -> { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
421 |
})); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
422 |
split = spliterator.trySplit(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
423 |
assertNull(split); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
424 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
425 |
// Full traversal using tryAdvance then forEach |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
426 |
spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
427 |
spliterator.tryAdvance(boxingAdapter.apply(e -> { })); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
428 |
spliterator.forEachRemaining(boxingAdapter.apply(e -> { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
429 |
})); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
430 |
split = spliterator.trySplit(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
431 |
assertNull(split); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
432 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
433 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
434 |
private static <T, S extends Spliterator<T>> void testSplitOnce( |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
435 |
Collection<T> exp, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
436 |
Supplier<S> supplier, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
437 |
UnaryOperator<Consumer<T>> boxingAdapter) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
438 |
S spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
439 |
long sizeIfKnown = spliterator.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
440 |
boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
441 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
442 |
ArrayList<T> fromSplit = new ArrayList<>(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
443 |
Spliterator<T> s1 = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
444 |
Spliterator<T> s2 = s1.trySplit(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
445 |
long s1Size = s1.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
446 |
long s2Size = (s2 != null) ? s2.getExactSizeIfKnown() : 0; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
447 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
448 |
Consumer<T> addToFromSplit = boxingAdapter.apply(fromSplit::add); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
449 |
if (s2 != null) |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
450 |
s2.forEachRemaining(addToFromSplit); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
451 |
s1.forEachRemaining(addToFromSplit); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
452 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
453 |
if (sizeIfKnown >= 0) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
454 |
assertEquals(sizeIfKnown, fromSplit.size()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
455 |
if (s1Size >= 0 && s2Size >= 0) |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
456 |
assertEquals(sizeIfKnown, s1Size + s2Size); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
457 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
458 |
assertContents(fromSplit, exp, isOrdered); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
459 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
460 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
461 |
private static <T, S extends Spliterator<T>> void testSplitSixDeep( |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
462 |
Collection<T> exp, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
463 |
Supplier<S> supplier, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
464 |
UnaryOperator<Consumer<T>> boxingAdapter) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
465 |
S spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
466 |
boolean isOrdered = spliterator.hasCharacteristics(Spliterator.ORDERED); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
467 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
468 |
for (int depth=0; depth < 6; depth++) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
469 |
List<T> dest = new ArrayList<>(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
470 |
spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
471 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
472 |
assertSpliterator(spliterator); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
473 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
474 |
// verify splitting with forEach |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
475 |
visit(depth, 0, dest, spliterator, boxingAdapter, spliterator.characteristics(), false); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
476 |
assertContents(dest, exp, isOrdered); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
477 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
478 |
// verify splitting with tryAdvance |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
479 |
dest.clear(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
480 |
spliterator = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
481 |
visit(depth, 0, dest, spliterator, boxingAdapter, spliterator.characteristics(), true); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
482 |
assertContents(dest, exp, isOrdered); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
483 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
484 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
485 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
486 |
private static <T, S extends Spliterator<T>> void visit(int depth, int curLevel, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
487 |
List<T> dest, S spliterator, UnaryOperator<Consumer<T>> boxingAdapter, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
488 |
int rootCharacteristics, boolean useTryAdvance) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
489 |
if (curLevel < depth) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
490 |
long beforeSize = spliterator.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
491 |
Spliterator<T> split = spliterator.trySplit(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
492 |
if (split != null) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
493 |
assertSpliterator(split, rootCharacteristics); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
494 |
assertSpliterator(spliterator, rootCharacteristics); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
495 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
496 |
if ((rootCharacteristics & Spliterator.SUBSIZED) != 0 && |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
497 |
(rootCharacteristics & Spliterator.SIZED) != 0) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
498 |
assertEquals(beforeSize, split.estimateSize() + spliterator.estimateSize()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
499 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
500 |
visit(depth, curLevel + 1, dest, split, boxingAdapter, rootCharacteristics, useTryAdvance); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
501 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
502 |
visit(depth, curLevel + 1, dest, spliterator, boxingAdapter, rootCharacteristics, useTryAdvance); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
503 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
504 |
else { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
505 |
long sizeIfKnown = spliterator.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
506 |
if (useTryAdvance) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
507 |
Consumer<T> addToDest = boxingAdapter.apply(dest::add); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
508 |
int count = 0; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
509 |
while (spliterator.tryAdvance(addToDest)) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
510 |
++count; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
511 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
512 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
513 |
if (sizeIfKnown >= 0) |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
514 |
assertEquals(sizeIfKnown, count); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
515 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
516 |
// Assert that forEach now produces no elements |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
517 |
spliterator.forEachRemaining(boxingAdapter.apply(e -> fail("Spliterator.forEach produced an element after spliterator exhausted: " + e))); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
518 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
519 |
Spliterator<T> split = spliterator.trySplit(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
520 |
assertNull(split); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
521 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
522 |
else { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
523 |
List<T> leafDest = new ArrayList<>(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
524 |
Consumer<T> addToLeafDest = boxingAdapter.apply(leafDest::add); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
525 |
spliterator.forEachRemaining(addToLeafDest); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
526 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
527 |
if (sizeIfKnown >= 0) |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
528 |
assertEquals(sizeIfKnown, leafDest.size()); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
529 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
530 |
// Assert that forEach now produces no elements |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
531 |
spliterator.tryAdvance(boxingAdapter.apply(e -> fail("Spliterator.tryAdvance produced an element after spliterator exhausted: " + e))); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
532 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
533 |
Spliterator<T> split = spliterator.trySplit(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
534 |
assertNull(split); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
535 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
536 |
dest.addAll(leafDest); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
537 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
538 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
539 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
540 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
541 |
private static <T, S extends Spliterator<T>> void testSplitUntilNull( |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
542 |
Collection<T> exp, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
543 |
Supplier<S> supplier, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
544 |
UnaryOperator<Consumer<T>> boxingAdapter) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
545 |
Spliterator<T> s = supplier.get(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
546 |
boolean isOrdered = s.hasCharacteristics(Spliterator.ORDERED); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
547 |
assertSpliterator(s); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
548 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
549 |
List<T> splits = new ArrayList<>(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
550 |
Consumer<T> c = boxingAdapter.apply(splits::add); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
551 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
552 |
testSplitUntilNull(new SplitNode<T>(c, s)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
553 |
assertContents(splits, exp, isOrdered); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
554 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
555 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
556 |
private static class SplitNode<T> { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
557 |
// Constant for every node |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
558 |
final Consumer<T> c; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
559 |
final int rootCharacteristics; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
560 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
561 |
final Spliterator<T> s; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
562 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
563 |
SplitNode(Consumer<T> c, Spliterator<T> s) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
564 |
this(c, s.characteristics(), s); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
565 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
566 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
567 |
private SplitNode(Consumer<T> c, int rootCharacteristics, Spliterator<T> s) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
568 |
this.c = c; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
569 |
this.rootCharacteristics = rootCharacteristics; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
570 |
this.s = s; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
571 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
572 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
573 |
SplitNode<T> fromSplit(Spliterator<T> split) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
574 |
return new SplitNode<>(c, rootCharacteristics, split); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
575 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
576 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
577 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
578 |
/** |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
579 |
* Set the maximum stack capacity to 0.25MB. This should be more than enough to detect a bad spliterator |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
580 |
* while not unduly disrupting test infrastructure given the test data sizes that are used are small. |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
581 |
* Note that j.u.c.ForkJoinPool sets the max queue size to 64M (1 << 26). |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
582 |
*/ |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
583 |
private static final int MAXIMUM_STACK_CAPACITY = 1 << 18; // 0.25MB |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
584 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
585 |
private static <T> void testSplitUntilNull(SplitNode<T> e) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
586 |
// Use an explicit stack to avoid a StackOverflowException when testing a Spliterator |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
587 |
// that when repeatedly split produces a right-balanced (and maybe degenerate) tree, or |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
588 |
// for a spliterator that is badly behaved. |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
589 |
Deque<SplitNode<T>> stack = new ArrayDeque<>(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
590 |
stack.push(e); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
591 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
592 |
int iteration = 0; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
593 |
while (!stack.isEmpty()) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
594 |
assertTrue(iteration++ < MAXIMUM_STACK_CAPACITY, "Exceeded maximum stack modification count of 1 << 18"); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
595 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
596 |
e = stack.pop(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
597 |
Spliterator<T> parentAndRightSplit = e.s; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
598 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
599 |
long parentEstimateSize = parentAndRightSplit.estimateSize(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
600 |
assertTrue(parentEstimateSize >= 0, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
601 |
String.format("Split size estimate %d < 0", parentEstimateSize)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
602 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
603 |
long parentSize = parentAndRightSplit.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
604 |
Spliterator<T> leftSplit = parentAndRightSplit.trySplit(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
605 |
if (leftSplit == null) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
606 |
parentAndRightSplit.forEachRemaining(e.c); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
607 |
continue; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
608 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
609 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
610 |
assertSpliterator(leftSplit, e.rootCharacteristics); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
611 |
assertSpliterator(parentAndRightSplit, e.rootCharacteristics); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
612 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
613 |
if (parentEstimateSize != Long.MAX_VALUE && leftSplit.estimateSize() > 0 && parentAndRightSplit.estimateSize() > 0) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
614 |
assertTrue(leftSplit.estimateSize() < parentEstimateSize, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
615 |
String.format("Left split size estimate %d >= parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
616 |
assertTrue(parentAndRightSplit.estimateSize() < parentEstimateSize, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
617 |
String.format("Right split size estimate %d >= parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
618 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
619 |
else { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
620 |
assertTrue(leftSplit.estimateSize() <= parentEstimateSize, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
621 |
String.format("Left split size estimate %d > parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
622 |
assertTrue(parentAndRightSplit.estimateSize() <= parentEstimateSize, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
623 |
String.format("Right split size estimate %d > parent split size estimate %d", leftSplit.estimateSize(), parentEstimateSize)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
624 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
625 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
626 |
long leftSize = leftSplit.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
627 |
long rightSize = parentAndRightSplit.getExactSizeIfKnown(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
628 |
if (parentSize >= 0 && leftSize >= 0 && rightSize >= 0) |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
629 |
assertEquals(parentSize, leftSize + rightSize, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
630 |
String.format("exact left split size %d + exact right split size %d != parent exact split size %d", |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
631 |
leftSize, rightSize, parentSize)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
632 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
633 |
// Add right side to stack first so left side is popped off first |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
634 |
stack.push(e.fromSplit(parentAndRightSplit)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
635 |
stack.push(e.fromSplit(leftSplit)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
636 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
637 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
638 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
639 |
private static void assertSpliterator(Spliterator<?> s, int rootCharacteristics) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
640 |
if ((rootCharacteristics & Spliterator.SUBSIZED) != 0) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
641 |
assertTrue(s.hasCharacteristics(Spliterator.SUBSIZED), |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
642 |
"Child split is not SUBSIZED when root split is SUBSIZED"); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
643 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
644 |
assertSpliterator(s); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
645 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
646 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
647 |
private static void assertSpliterator(Spliterator<?> s) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
648 |
if (s.hasCharacteristics(Spliterator.SUBSIZED)) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
649 |
assertTrue(s.hasCharacteristics(Spliterator.SIZED)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
650 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
651 |
if (s.hasCharacteristics(Spliterator.SIZED)) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
652 |
assertTrue(s.estimateSize() != Long.MAX_VALUE); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
653 |
assertTrue(s.getExactSizeIfKnown() >= 0); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
654 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
655 |
try { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
656 |
s.getComparator(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
657 |
assertTrue(s.hasCharacteristics(Spliterator.SORTED)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
658 |
} catch (IllegalStateException e) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
659 |
assertFalse(s.hasCharacteristics(Spliterator.SORTED)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
660 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
661 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
662 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
663 |
private static<T> void assertContents(Collection<T> actual, Collection<T> expected, boolean isOrdered) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
664 |
if (isOrdered) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
665 |
assertEquals(actual, expected); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
666 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
667 |
else { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
668 |
assertContentsUnordered(actual, expected); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
669 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
670 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
671 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
672 |
private static<T> void assertContentsUnordered(Iterable<T> actual, Iterable<T> expected) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
673 |
assertEquals(toBoxedMultiset(actual), toBoxedMultiset(expected)); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
674 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
675 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
676 |
private static <T> Map<T, HashableInteger> toBoxedMultiset(Iterable<T> c) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
677 |
Map<T, HashableInteger> result = new HashMap<>(); |
18824
9fa4af2af63d
8015320: Pull spliterator() up from Collection to Iterable
henryjen
parents:
17939
diff
changeset
|
678 |
c.forEach(e -> { |
9fa4af2af63d
8015320: Pull spliterator() up from Collection to Iterable
henryjen
parents:
17939
diff
changeset
|
679 |
if (result.containsKey(e)) { |
9fa4af2af63d
8015320: Pull spliterator() up from Collection to Iterable
henryjen
parents:
17939
diff
changeset
|
680 |
result.put(e, new HashableInteger(result.get(e).value + 1, 10)); |
17939
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
681 |
} else { |
18824
9fa4af2af63d
8015320: Pull spliterator() up from Collection to Iterable
henryjen
parents:
17939
diff
changeset
|
682 |
result.put(e, new HashableInteger(1, 10)); |
17939
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
683 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
684 |
}); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
685 |
return result; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
686 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
687 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
688 |
private void executeAndCatch(Class<? extends Exception> expected, Runnable r) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
689 |
Exception caught = null; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
690 |
try { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
691 |
r.run(); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
692 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
693 |
catch (Exception e) { |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
694 |
caught = e; |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
695 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
696 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
697 |
assertNotNull(caught, |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
698 |
String.format("No Exception was thrown, expected an Exception of %s to be thrown", |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
699 |
expected.getName())); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
700 |
assertTrue(expected.isInstance(caught), |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
701 |
String.format("Exception thrown %s not an instance of %s", |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
702 |
caught.getClass().getName(), expected.getName())); |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
703 |
} |
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
704 |
|
bd750ec19d82
8005698: Handle Frequent HashMap Collisions with Balanced Trees
bchristi
parents:
diff
changeset
|
705 |
} |