118 lines
3.7 KiB
C#
118 lines
3.7 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="HLSFAllocationHandle"
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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;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using Allocator = StgSharp.HighPerformance.Memory.HybridLayerSegregatedFitAllocator;
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namespace StgSharp.HighPerformance.Memory
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{
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public readonly unsafe struct HlsfHandle
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{
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internal readonly Allocator.Entry* EntryHandle;
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public readonly nuint AllocSize;
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internal HlsfHandle(
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Allocator.Entry* handle,
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nuint s
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)
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{
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EntryHandle = handle;
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Pointer = (byte*)handle->Position;
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AllocSize = s;
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// Console.WriteLine($"{(ulong)handle->PreviousNear}<->{(ulong)handle->NextNear},\t{handle->Size}");
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}
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public readonly ref byte this[
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uint index
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]
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get
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{
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ArgumentOutOfRangeException.ThrowIfGreaterThanOrEqual(index, AllocSize);
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return ref Pointer[index];
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}
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}
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public readonly byte* Pointer { get; init; }
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public readonly Span<byte> BufferHandle => new(Pointer, (int)AllocSize);
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public readonly Enumerator GetEnumerator()
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{
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return new Enumerator(this);
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}
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public ref struct Enumerator : IEnumerator<byte>
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{
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private HlsfHandle _handle;
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private uint _index = ~0u;
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internal Enumerator(
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HlsfHandle span
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)
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{
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_handle = span;
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Span = span.BufferHandle;
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}
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public ref byte RefCurrent => ref _handle[_index];
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public Span<byte> Span { get; init; }
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public readonly void Dispose() { }
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public bool MoveNext()
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{
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_index++;
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return _index < _handle.AllocSize;
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}
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public void Reset()
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{
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_index = 0;
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}
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object IEnumerator.Current => RefCurrent;
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byte IEnumerator<byte>.Current => RefCurrent;
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}
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}
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}
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