HLSf use nuint rather than long, L4 now uses hlsf rather than array to alloc cache line.

2026-04-20 18:10:14 +08:00
parent 1b7c929be4
commit 2e2d64a2ce
38 changed files with 796 additions and 465 deletions
@@ -0,0 +1,102 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="L4.Slab"
+// Project: StgSharp
+// AuthorGroup: Nitload
+// Copyright (c) Nitload. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Hlsf = StgSharp.HighPerformance.Memory.HybridLayerSegregatedFitAllocator;
+
+namespace StgSharp.HighPerformance.Memory
+{
+    public partial class L4
+    {
+
+        private sealed unsafe class Slab : SlabAllocator<Hlsf.Entry>
+        {
+
+            private const int Capacity = L4.CacheLineCount;
+
+            private int _maxUnused;
+            private int _recycleCount;
+
+            internal readonly Hlsf.Entry* _basePtr;
+            internal readonly int* _indexReuse;
+
+            public Slab(
+                   nuint ptr
+            )
+            {
+                _basePtr = (Hlsf.Entry*)ptr;
+                _indexReuse = (int*)(_basePtr + Capacity);
+                _maxUnused = 0;
+                _recycleCount = 0;
+            }
+
+            public static nuint RequestedAllocation { get; } = ((nuint)(Unsafe.SizeOf<Hlsf.Entry>() + sizeof(int))) * Capacity;
+
+            public override nuint Allocate()
+            {
+                if (_recycleCount > 0) {
+                    return (nuint)(_basePtr + _indexReuse[_recycleCount - 1]);
+                }
+                if (_maxUnused >= Capacity) {
+                    throw new OverflowException("Slab is full");
+                }
+                int index = _maxUnused;
+                _maxUnused++;
+                return (nuint)(_basePtr + index);
+            }
+
+            public override void Dispose()
+            {
+                GC.SuppressFinalize(this);
+            }
+
+            public override void EnterBufferReading() { }
+
+            public override void ExitBufferReading() { }
+
+            public override void Free(
+                                 nuint index
+            )
+            {
+                _indexReuse[_recycleCount] = (int)index;
+                _recycleCount++;
+            }
+
+            public override SlabAllocationHandle<Hlsf.Entry> ReadAllocation()
+            {
+                return new(this, false);
+            }
+
+        }
+
+    }
+}