Change to high precision timer

Author: mwatson

Src/StackifyLib/Internal/Logs/LogQueue.cs

@@ -84,17 +84,17 @@ public void QueueLogMessage(Models.LogMsg msg)
                 }
 
 
-                //try
-                //{
-
-                //    if (string.IsNullOrEmpty(msg.Th))
-                //    {
-                //        msg.Th = System.Threading.Thread.CurrentThread.ManagedThreadId.ToString();
-                //    }
-                //}
-                //catch
-                //{
-                //}
+                try
+                {
+
+                    if (string.IsNullOrEmpty(msg.Th))
+                    {
+                        msg.Th = System.Threading.Thread.CurrentThread.ManagedThreadId.ToString();
+                    }
+                }
+                catch
+                {
+                }
 
 #if NET45 || NET40
                 try

Src/StackifyLib/Models/LogMsgGroup.cs

@@ -5,6 +5,7 @@
 using System.Runtime.Serialization;
 using System.Text;
 using Newtonsoft.Json;
+using StackifyLib.Utils;
 
 namespace StackifyLib.Models
 {
@@ -51,7 +52,10 @@ public class LogMsg
 
         public LogMsg()
         {
-            EpochMs = (long)DateTime.UtcNow.Subtract(_Epoch).TotalMilliseconds;
+            EpochMs = (long)HighPrecisionTime.UtcNow.Subtract(_Epoch).TotalMilliseconds;
+
+            //Switched to high precision timer
+            //EpochMs = (long)DateTime.UtcNow.Subtract(_Epoch).TotalMilliseconds;
             UploadErrors = 0;
         }
 

Src/StackifyLib/ProfileTracer.cs

@@ -90,6 +90,14 @@ public static void SetOperationName(string operationName)
 
         }
 
+        [Obsolete("Just used for testing", false)]
+        [MethodImpl(MethodImplOptions.PreserveSig | MethodImplOptions.NoInlining | MethodImplOptions.NoOptimization)]
+        public static void NoOp()
+        {
+            
+        }
+
+
 
         [MethodImpl(MethodImplOptions.PreserveSig | MethodImplOptions.NoInlining | MethodImplOptions.NoOptimization)]
         public static void TraceString(string logMsg)

Src/StackifyLib/Utils/HighPrecisionTime.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+
+namespace StackifyLib.Utils
+{
+    public static class HighPrecisionTime
+    {
+        public static bool IsAvailable { get; private set; }
+
+        [DllImport("Kernel32.dll", CallingConvention = CallingConvention.Winapi)]
+        private static extern void GetSystemTimePreciseAsFileTime(out long filetime);
+
+        public static DateTime UtcNow
+        {
+            get
+            {
+                if (!IsAvailable)
+                {
+                    return DateTime.UtcNow;
+                    // throw new InvalidOperationException("High resolution clock isn't available.");
+                }
+                long filetime;
+                GetSystemTimePreciseAsFileTime(out filetime);
+                return DateTime.FromFileTimeUtc(filetime);
+            }
+        }
+
+        static HighPrecisionTime()
+        {
+            try
+            {
+                long filetime;
+                GetSystemTimePreciseAsFileTime(out filetime);
+                IsAvailable = true;
+            }
+            catch 
+            {
+                 IsAvailable = false;       
+            }
+        }
+    }
+}

Src/StackifyLib/Utils/PrefixOrAPM.cs

@@ -57,6 +57,7 @@ internal static ProfilerType GetProfilerType()
                             switch (process?.ProcessName?.ToLower().Replace(".vshost", ""))
                             {
                                 case "devdashservice":
+                                case "stackifytracerservice":
                                 case "stackifytracernotifier":
                                 case "devdashtestconsole":
                                     _LastProfilerType = ProfilerType.Prefix;