| /* |
| * Copyright (C) 2010 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except |
| * in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| package com.google.common.util.concurrent; |
| |
| import com.google.common.annotations.GwtIncompatible; |
| import java.util.concurrent.atomic.AtomicReference; |
| import java.util.concurrent.atomic.AtomicReferenceArray; |
| import org.checkerframework.checker.nullness.qual.Nullable; |
| |
| /** |
| * Static utility methods pertaining to classes in the {@code java.util.concurrent.atomic} package. |
| * |
| * @author Kurt Alfred Kluever |
| * @since 10.0 |
| */ |
| @GwtIncompatible |
| public final class Atomics { |
| private Atomics() {} |
| |
| /** |
| * Creates an {@code AtomicReference} instance with no initial value. |
| * |
| * @return a new {@code AtomicReference} with no initial value |
| */ |
| public static <V> AtomicReference<V> newReference() { |
| return new AtomicReference<V>(); |
| } |
| |
| /** |
| * Creates an {@code AtomicReference} instance with the given initial value. |
| * |
| * @param initialValue the initial value |
| * @return a new {@code AtomicReference} with the given initial value |
| */ |
| public static <V> AtomicReference<V> newReference(@Nullable V initialValue) { |
| return new AtomicReference<V>(initialValue); |
| } |
| |
| /** |
| * Creates an {@code AtomicReferenceArray} instance of given length. |
| * |
| * @param length the length of the array |
| * @return a new {@code AtomicReferenceArray} with the given length |
| */ |
| public static <E> AtomicReferenceArray<E> newReferenceArray(int length) { |
| return new AtomicReferenceArray<E>(length); |
| } |
| |
| /** |
| * Creates an {@code AtomicReferenceArray} instance with the same length as, and all elements |
| * copied from, the given array. |
| * |
| * @param array the array to copy elements from |
| * @return a new {@code AtomicReferenceArray} copied from the given array |
| */ |
| public static <E> AtomicReferenceArray<E> newReferenceArray(E[] array) { |
| return new AtomicReferenceArray<E>(array); |
| } |
| } |