First in 202205060145

源代码/Demo/Threding Demo2/Program.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Threading;
+using System.Diagnostics;
+
+namespace Threding_Demo2
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            long frequency = Stopwatch.Frequency;
+            Console.WriteLine("Timer frequency in ticks per second = {0}",frequency);
+            long nanosecPerTick = (1000L * 1000L * 1000L) / frequency;
+            Console.WriteLine("Timer is accurate within {0} nanoseconds",nanosecPerTick);
+        }
+    }
+    class demo
+    {
+        public Stopwatch Stopwatcher { get; set; }
+        public demo()
+        {
+            this.Stopwatcher =  new Stopwatch();
+        }
+        public void PreSpin(Stopwatch a, double duration)
+        {
+            var current = a.ElapsedTicks;
+            while ((a.ElapsedTicks-current)<duration )
+            {
+                Thread.SpinWait(10);
+            }
+        }
+        public void Spin(Stopwatch a, double duration)
+        {
+            this.PreSpin(a,duration);
+        }
+    }
+}