84 lines
2.9 KiB
C#
84 lines
2.9 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="L4.EvictionRing"
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// Project: StgSharp
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// AuthorGroup: Nitload Space
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// Copyright (c) Nitload Space. 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.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading.Tasks;
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namespace StgSharp.HighPerformance.Memory
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{
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public partial class L4
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{
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private EvictionRing _ring ;
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private unsafe class EvictionRing
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{
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private nint[] _bucket;
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public void AddNode(EvictionRingNode* node)
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{
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nint address = node->_address;
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int hash = (int)(address % (nint)_bucket.Length);
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nint head = _bucket[hash];
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if (head != 0)
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{
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EvictionRingNode* headNode = (EvictionRingNode*)head;
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headNode->_prev = node;
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node->_next = headNode;
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}
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_bucket[hash] = address;
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}
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}
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[StructLayout(LayoutKind.Sequential)]
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private unsafe struct EvictionRingNode
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{
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public EvictionRingNode* _next;
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public EvictionRingNode* _prev;
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public int _level;
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public int _refCount;
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public nint _address;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public void IncrementRefCount()
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{
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_ = Interlocked.Increment(ref _refCount);
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}
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}
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}
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}
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