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

StgSharp.Common/HighPerformance/Memory/L4.cs

@@ -38,12 +38,14 @@ namespace StgSharp.HighPerformance.Memory
         private const int PredictionCount = 2048;
         private const int PredictionLeastAhead = 1024;
 
+        private static readonly IIntrinsicKernel _intrinsic = IIntrinsicKernel.Instance;
+
         private readonly CacheLineData* _data;
         private readonly EvictionArray* _eviction;
         private readonly CacheLineHead* _head;
         private readonly CacheLinePrediction* _prediction;
-
         private bool _disposed;
+        private bool _exhausted;
         private int _activeCount;
 
         private int _aheadCount;
@@ -84,7 +86,7 @@ namespace StgSharp.HighPerformance.Memory
             ptr += stackSize;
         }
 
-        public IL4Predict PrefetchPredict { get; set; }
+        // public IL4Predict PrefetchPredict { get; set; }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public void ContinueOnce(
@@ -121,7 +123,7 @@ namespace StgSharp.HighPerformance.Memory
                            nuint origin
         )
         {
-            if ((_aheadCount < PredictionLeastAhead) && !PrefetchPredict.IsExhausted)
+            if ((_aheadCount < PredictionLeastAhead) && !_exhausted)
             {
                 if (Interlocked.CompareExchange(ref _prefetching, 1, 0) == 0)
                 {
@@ -193,7 +195,7 @@ namespace StgSharp.HighPerformance.Memory
             _activeCount = ref activeCount;
         }
 
-        [Obsolete("You should not create a CacheLineHandle outside a L4", true)]
+        [Obsolete("You should not create a CacheLineHandle instance outside a L4", true)]
         public L4CacheLine() { }
 
         public readonly nuint Address => _handle;