Merge pull request #11086 from basoundr/FixNRE

Fix NRE and provide better verbosity

src/Test/Perf/infra/TriggerAutomation.bat

-@echo off
+@echo off
 
 :: Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 call "%VS140COMNTOOLS%VsDevCmd.bat"
@@ -9,6 +9,6 @@ pushd %~dp0
 csi fetch_build.csx Master %~dp0..\..\..\..\Binaries\Release
 
 :: Start Test Automation from the binaries directory
-csi %~dp0..\..\..\..\Binaries\Release\Perf\infra\automation.csx
+csi %~dp0..\..\..\..\Binaries\Release\Perf\infra\automation.csx --verbose
 
 popd
\ No newline at end of file

src/Test/Perf/runner.csx

@@ -6,6 +6,7 @@
 #load "./util/runner_util.csx"
 // Log()
 // StdoutFrom()
+// IsVerbose()
 #load "./util/tools_util.csx"
 
 using System.Collections.Generic;
@@ -33,7 +34,7 @@ foreach (var script in GetAllCsxRecursive(testDirectory))
     testInstances.AddRange(tests);
 }
 
-var traceManager = TraceManagerFactory.GetTraceManager();
+var traceManager = TraceManagerFactory.GetTraceManager(IsVerbose());
 
 traceManager.Initialize();
 foreach (var test in testInstances)

src/Test/Perf/util/Logger.cs

@@ -19,13 +19,13 @@ public ConsoleAndFileLogger(string file = "log.txt")
 
         public void Flush()
         {
-            File.WriteAllText(_file, _buffer.ToString());
+            File.AppendAllText(_file, _buffer.ToString());
         }
 
         public void Log(string v)
         {
-            Console.WriteLine(v);
-            _buffer.AppendLine(v);
+            Console.WriteLine(DateTime.Now + " : " + v);
+            _buffer.AppendLine(DateTime.Now + " : " + v);
         }
     }
 }

src/Test/Perf/util/TraceManagerFactory.cs

@@ -4,13 +4,17 @@ namespace Roslyn.Test.Performance.Utilities
 {
     public class TraceManagerFactory
     {
-        public static ITraceManager GetTraceManager()
+        public static ITraceManager GetTraceManager(bool isVerbose = false)
         {
             var cpcFullPath = Path.Combine(TestUtilities.GetCPCDirectoryPath(), "CPC.exe");
             var scenarioPath = TestUtilities.GetCPCDirectoryPath();
             if (File.Exists(cpcFullPath))
             {
-                return new TraceManager(cpcFullPath, scenarioPath, verbose: true, logger: null);
+                return new TraceManager(
+                    cpcFullPath,
+                    scenarioPath,
+                    verbose: isVerbose,
+                    logger: isVerbose ? new ConsoleAndFileLogger() : null);
             }
             else
             {