add from giga-device, new branch added

2025-08-21 16:51:25 +08:00
commit 43bbc06bbb
1296 changed files with 264186 additions and 0 deletions
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+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="HLSFAllocator.Level.cs"
+// Project: StgSharp
+// AuthorGroup: Nitload Space
+// Copyright (c) Nitload Space. 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.Numerics;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.HighPerformance.Memory
+{
+    public unsafe partial class HybridLayerSegregatedFitAllocator
+    {
+
+        private const int MaxLevel = 9;
+
+        private static readonly int[] levelSizeArray = [
+            64, 256, 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216
+            ];
+
+        public int AlignOfLevel(int bucketLevel)
+        {
+            int blockSize = levelSizeArray[bucketLevel];
+            return int.Min(blockSize, _align);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private int GetLevelFromSize(uint size)
+        {
+            /*
+            * Level sizes: [64, 256, 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216]
+            * Pattern: 64 * 4^level = 2^6 * 2^(2*level) = 2^(6+2*level)
+            * 
+            * For size S, we need: 2^(6+2*level) >= S
+            * So: 6+2*level >= log2(S)
+            * Therefore: level >= (log2(S) - 6) / 2
+            * 
+            * We use hardware LZCNT instruction via BitOperations.LeadingZeroCount
+            * log2(S) = 31 - LeadingZeroCount(S) for 32-bit values
+            */
+            int log2Size = 31 - BitOperations.LeadingZeroCount(size);
+
+            // Calculate level: level = max(0, (log2Size - 6) / 2)
+            int level = Math.Max(0, (log2Size - 6) / 2);
+
+            // caller is responsible for ensuring level is within bounds
+            return level;
+        }
+
+    }
+
+    public enum CommonMemoryAlign : int
+    {
+
+        XMMLevel = 16,
+        YMMLevel = 32,
+        ZMMLevel = 64,
+
+        ArmNEONLevel = 16,
+
+    }
+}