Using new file structure. Use new regexir display method. Fix line dependency error in prefix analysing.

Signed-off-by: Nitload <YoumuLiu_NSI@whv0t.onmicrosoft.com>

src/StgSharp.Common/HighPerformance/Memory/SlabAllocationHandle.cs

@@ -0,0 +1,39 @@
+// -----------------------------------------------------------------------------
+// file="SlabAllocationHandle"
+// Project: StgSharp
+// Copyright (c) Nitload.
+// SPDX-License-Identifier: MIT
+// -----------------------------------------------------------------------------
+
+using System;
+using System.Runtime.CompilerServices;
+
+namespace StgSharp.HighPerformance.Memory
+{
+    public unsafe struct SlabAllocationHandle<T> : IDisposable where T : unmanaged
+    {
+
+        private readonly SlabAllocator<T> _allocator;
+
+        internal SlabAllocationHandle(
+                 SlabAllocator<T> allocator,
+                 bool locked
+        )
+        {
+            _allocator = allocator;
+            Locked = locked;
+        }
+
+        public bool Locked { get; set; }
+
+        public void Dispose()
+        {
+            if (Locked)
+            {
+                _allocator.ExitBufferReading();
+                Locked = false;
+            }
+        }
+
+    }
+}