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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Runtime.InteropServices;
namespace System.Buffers;
/// <summary>
/// Wraps an array allocated in the pinned object heap in a reusable block of managed memory
/// </summary>
internal sealed class MemoryPoolBlock : IMemoryOwner<byte>
{
internal MemoryPoolBlock(PinnedBlockMemoryPool pool, int length)
{
Pool = pool;
var pinnedArray = GC.AllocateUninitializedArray<byte>(length, pinned: true);
Memory = MemoryMarshal.CreateFromPinnedArray(pinnedArray, 0, pinnedArray.Length);
}
/// <summary>
/// Back-reference to the memory pool which this block was allocated from. It may only be returned to this pool.
/// </summary>
public PinnedBlockMemoryPool Pool { get; }
public Memory<byte> Memory { get; }
public void Dispose()
{
Pool.Return(this);
}
}
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