| using System; |
| using System.Collections; |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.Support |
| { |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| internal static class SetExtensions |
| { |
| /// <summary> |
| /// Returns a concurrent wrapper for the current <see cref="ISet{T}"/>. |
| /// </summary> |
| /// <typeparam name="T">The type of elements in the set.</typeparam> |
| /// <param name="set">The collection to make concurrent (thread-safe).</param> |
| /// <returns>An object that acts as a read-only wrapper around the current <see cref="ISet{T}"/>.</returns> |
| /// <exception cref="ArgumentNullException"><paramref name="set"/> is <c>null</c>.</exception> |
| /// <remarks> |
| /// To synchronize any modifications to the <see cref="ISet{T}"/> object, expose it only through this wrapper. |
| /// <para/> |
| /// The set returned uses simple locking and may not be the most performant solution, but it provides a quick |
| /// way to make any set thread-safe. A synchronization object is exposed through the <see cref="ICollection.SyncRoot"/> |
| /// property that can be used for external synchronization. |
| /// <para/> |
| /// This method is an O(1) operation. |
| /// </remarks> |
| internal static ISet<T> AsConcurrent<T>(this ISet<T> set) |
| { |
| return new ConcurrentSet<T>(set); |
| } |
| } |
| } |