add multi predictor support to l4, working for ver 5 of mat parallel

2026-04-09 18:07:49 +08:00
parent 0bad6bb480
commit f7187ca7fd
19 changed files with 653 additions and 187 deletions
@@ -0,0 +1,138 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="L4.Predictor"
+// 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;
+
+namespace StgSharp.HighPerformance.Memory
+{
+    [Flags]
+    public enum PredictResult
+    {
+
+        Success = 1,
+        Exhausted = 2,
+
+    }
+
+    public interface IL4Predict
+    {
+
+        PredictResult Predict(
+                      Span<CacheLinePrediction> node,
+                      out int count
+        );
+
+        /// <summary>
+        ///   Materializes the cache line identified by <paramref name="origin" /> into <paramref
+        ///   name="cache" />.
+        /// </summary>
+        /// <param name="origin">
+        ///   Source address associated with the cache line.
+        /// </param>
+        /// <param name="policy">
+        ///   Mapping policy associated with the cache line.
+        /// </param>
+        /// <param name="cache">
+        ///   Destination cache line buffer.
+        /// </param>
+        void Prefetch(
+             nuint origin,
+             ulong policy,
+             Span<byte> cache
+        );
+
+        /// <summary>
+        ///   Writes the cache line in <paramref name="cache" /> back to <paramref name="origin" />.
+        /// </summary>
+        /// <param name="origin">
+        ///   Source address associated with the cache line.
+        /// </param>
+        /// <param name="policy">
+        ///   Mapping policy associated with the cache line.
+        /// </param>
+        /// <param name="cache">
+        ///   Source cache line buffer.
+        /// </param>
+        void WriteBack(
+             nuint origin,
+             uint policy,
+             ReadOnlySpan<byte> cache
+        );
+
+    }
+
+    public struct CacheLinePrediction : IEquatable<CacheLinePrediction>
+    {
+
+        public override readonly bool Equals(
+                                      object? obj
+        )
+        {
+            return (obj is CacheLinePrediction prediction) &&
+                   Address.Equals(prediction.Address) &&
+                   (MapPolicy == prediction.MapPolicy);
+        }
+
+        public readonly bool Equals(
+                             CacheLinePrediction other
+        )
+        {
+            return
+            (Address == other.Address) && (MapPolicy == other.MapPolicy);
+        }
+
+        public override readonly int GetHashCode()
+        {
+            return HashCode.Combine(Address, MapPolicy);
+        }
+
+        public static bool operator !=(
+                                    CacheLinePrediction left,
+                                    CacheLinePrediction right
+        )
+        {
+            return !(left == right);
+        }
+        public static bool operator ==(
+                                    CacheLinePrediction left,
+                                    CacheLinePrediction right
+        )
+        {
+            return left.Equals(right);
+        }
+
+#pragma warning disable CA1051
+        public nuint Address;
+        public uint MapPolicy;
+        internal uint Predictor;
+#pragma warning restore CA1051
+    }
+}