add from giga-device, new branch added

StgSharp.Common/HighPerformance/Lable.cs

@@ -0,0 +1,70 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="Lable.cs"
+// Project: StgSharp
+// 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 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.Runtime.CompilerServices;
+
+namespace StgSharp.HighPerformance
+{
+    public class DataLabel
+    {
+
+        public DataLabel(string labelName)
+        {
+            Name = labelName;
+        }
+
+        public string Name
+        {
+[MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get;
+            init;
+        }
+
+        public override unsafe int GetHashCode()
+        {
+            ReadOnlySpan<char> nameSpan = Name.AsSpan();
+            fixed (char* cptr = nameSpan) {
+                return InternalIO.Intrinsic.city_hash_simplify(cptr, Name.Length);
+            }
+        }
+
+    }
+
+    public static class DataLabelBuilder
+    {
+
+        public static DataLabel AsLabel(this string name)
+        {
+            return new DataLabel(name);
+        }
+
+    }
+}