119 lines
3.9 KiB
C#
119 lines
3.9 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="ConcurrentFlexibaleArray"
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// Project: StgSharp
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// AuthorGroup: Nitload
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// Copyright (c) Nitload. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace StgSharp.Common.Collections
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{
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public class ConcurrentFlexibleArray<T>(
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int capacity = 4
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)
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{
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private volatile T[] _array = new T[capacity];
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private readonly ReaderWriterLockSlim _rwLock = new();
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public T this[
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int index
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]
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{
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get
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{
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_rwLock.EnterReadLock();
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try
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{
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if ((uint)index >= (uint)_array.Length) {
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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return _array[index];
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}
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finally
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{
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_rwLock.ExitReadLock();
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}
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}
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set
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{
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if ((uint)index >= (uint)_array.Length)
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{
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_rwLock.EnterWriteLock();
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try
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{
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if ((uint)index >= (uint)_array.Length)
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{
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int newSize = Math.Max(_array.Length * 2, index + 1);
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T[] newArray = new T[newSize];
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Array.Copy(_array, newArray, _array.Length);
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_array = newArray;
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_array[index] = value;
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}
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}
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finally
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{
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_rwLock.ExitWriteLock();
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}
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} else
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{
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_rwLock.EnterReadLock();
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try
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{
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_array[index] = value;
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}
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finally
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{
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_rwLock.ExitReadLock();
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}
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}
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}
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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internal Span<T> AsSpan()
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{
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return _array.AsSpan();
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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internal void ReleaseSpanOperation()
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{
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_rwLock.ExitReadLock();
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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internal void RequestSpanOperation()
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{
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_rwLock.EnterReadLock();
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}
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}
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}
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