switch root namespace name to NITLOAD

2026-09-02 18:15:03 +08:00
parent 4218baad48
commit 7c7101ee48
502 changed files with 710 additions and 721 deletions
@@ -0,0 +1,64 @@
+// -----------------------------------------------------------------------------
+// file="L4.Evict"
+// Project: StgSharp
+// Copyright (c) Nitload.
+// SPDX-License-Identifier: MIT
+// -----------------------------------------------------------------------------
+
+namespace Nitload.Common.HighPerformance.Memory
+{
+    public partial class L4
+    {
+
+        /// <summary>
+        ///
+        /// </summary>
+        /// <param name="count">
+        ///
+        /// </param>
+        /// <returns>
+        ///   Count of lines not evicted
+        /// </returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private unsafe int Evict(
+                           int count = 1
+        )
+        {
+            count = (count < 0) ? 0 : count;
+            int* pPtr = _predictCount, mPtr = _mapCount;
+
+
+            int remain = count;
+            for (int i = 0; i < CacheLineCount; i++)
+            {
+                if (pPtr[i] > mPtr[i])
+                {
+                    continue;
+                }
+                remain -= TryEvictAt(i) ? 1 : 0;
+            }
+            return remain;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private unsafe bool TryEvictAt(
+                            int index
+        )
+        {
+            CacheLineMetadata* head = &_head[index];
+            if (Interlocked.CompareExchange(ref head->RefCount, int.MinValue, 0) == 0)
+            {
+                // EvictLine(i + index);
+                _ = _map.TryRemove(head->Origin, out _);
+                IL4Predict predict = CurrentPredict;
+                predict.WriteBack(head->Origin, head->CustomizeProfile, new ReadOnlySpan<byte>((byte*)(ulong)(head->PositionMask + _baseAddress), (int)(ulong)head->SizeMask));
+                _bufferAllocator.Free(index);
+                _mapCount[index] = 0;
+                _predictCount[index] = int.MaxValue;
+                return true;
+            }
+            return false;
+        }
+
+    }
+}