some chore

2026-03-12 18:13:41 +08:00
parent 0c1887d8f8
commit c1c1a16627
5 changed files with 120 additions and 112 deletions
@@ -0,0 +1,109 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="L4.InternalOp"
+// 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.Numerics;
+using System.Runtime.Intrinsics;
+using System.Runtime.Intrinsics.X86;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.HighPerformance.Memory
+{
+    public partial class L4
+    {
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private unsafe void AgeAll()
+        {
+            Vector128<byte> one = Vector128.Create((byte)0x01);
+            Vector128<byte> max = Vector128.Create((byte)0x03);
+            byte* p = (byte*)_eviction;
+            for (int i = 0; i < CacheLineCount; i += 16)
+            {
+                Vector128<byte> v = Sse2.LoadVector128(p + i);
+                v = Sse2.AddSaturate(v, one);
+                v = Sse2.Min(v, max);
+                Sse2.Store(p + i, v);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private unsafe void Evict(
+                            int count = 1
+        )
+        {
+            int remain = count;
+            Vector128<byte> one = Vector128.Create((byte)0x01);
+            Vector128<byte> three = Vector128.Create((byte)0x03);
+            byte* p = (byte*)_eviction;
+            for (int i = 0; i < CacheLineCount && remain > 0; i += 16)
+            {
+                Vector128<byte> v = Sse2.LoadVector128(p + i);
+                Vector128<byte> mask = Sse2.CompareEqual(v, three);
+                int evictMask = Sse2.MoveMask(mask);
+                while (evictMask != 0 && remain > 0)
+                {
+                    int bitPos = BitOperations.TrailingZeroCount(evictMask);
+                    int index = bitPos + i;
+                    CacheLineHead* head = &_head[index];
+                    if (Interlocked.CompareExchange(ref head->_refCount, -1, 0) == 0)
+                    {
+                        // EvictLine(i + index);
+                        _ = _map.TryRemove(head->_origin, out _);
+                        RecycleLine(index);
+                        remain--;
+                    }
+                    evictMask &= evictMask - 1;
+                }
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private void RecycleLine(
+                     int id
+        )
+        {
+            _idMux.Push(id);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private bool TryGetEmptyLine(
+                     out int index
+        )
+        {
+            if (_idMux.TryPop(out index)) {
+                return true;
+            }
+            index = _maxId;
+            return Interlocked.Increment(ref _maxId) >= CacheLineCount;
+        }
+
+    }
+}