fix sever L4 errors

StgSharp.Common/HighPerformance/Memory/L4.Evict.cs

@@ -1,9 +1,9 @@
 //-----------------------------------------------------------------------
 // -----------------------------------------------------------------------
-// file="L4.InternalOp"
+// file="L4.Evict"
 // Project: StgSharp
-// AuthorGroup: Nitload
-// Copyright (c) Nitload. All rights reserved.
+// 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
@@ -54,10 +54,17 @@ namespace StgSharp.HighPerformance.Memory
             }
         }
 
+        /// <summary>
+        ///
+        /// </summary>
+        /// <param name="count">
+        ///
+        /// </param>
+        /// <returns>
+        ///   Count of lines not evicted
+        /// </returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private unsafe void Evict(
-                            int count = 1
-        )
+        private unsafe int Evict(int count = 1)
         {
             int remain = count;
             Vector128<byte> one = Vector128.Create((byte)0x01);
@@ -77,32 +84,30 @@ namespace StgSharp.HighPerformance.Memory
                     {
                         // EvictLine(i + index);
                         _ = _map.TryRemove(head->_origin, out _);
+                        PrefetchPredict.WriteBack(head->_address, head->_profile, new ReadOnlySpan<byte>((byte*)head->_address, Unsafe.SizeOf<CacheLineData>()));
                         RecycleLine(index);
                         remain--;
                     }
                     evictMask &= evictMask - 1;
                 }
             }
+            return remain;
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void RecycleLine(
-                     int id
-        )
+        private void RecycleLine(int id)
         {
             _idMux.Push(id);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private bool TryGetEmptyLine(
-                     out int index
-        )
+        private bool TryGetEmptyLine(out int index)
         {
             if (_idMux.TryPop(out index)) {
                 return true;
             }
             index = _maxId;
-            return Interlocked.Increment(ref _maxId) >= CacheLineCount;
+            return Interlocked.Increment(ref _maxId) <= CacheLineCount;
         }
 
     }