[corlib] Don't use DateTime.Now for measuring elapsed time

[mono.git] / mcs / class / corlib / Test / System.Threading / ThreadPoolTest.cs

diff --git a/mcs/class/corlib/Test/System.Threading/ThreadPoolTest.cs b/mcs/class/corlib/Test/System.Threading/ThreadPoolTest.cs
index 98c939312eadb5c37dea947046bf681ae0ae4459..9dace8484e5e06c64f6c7a83e3e896cebe2a24f7 100644 (file)
--- a/mcs/class/corlib/Test/System.Threading/ThreadPoolTest.cs
+++ b/mcs/class/corlib/Test/System.Threading/ThreadPoolTest.cs
@@ -27,6 +27,7 @@
 //
 
 using System;
+using System.Diagnostics;
 using System.Threading;
 using NUnit.Framework;
 
@@ -91,8 +92,8 @@ namespace MonoTests.System.Threading
                                else
                                        ThreadPool.QueueUserWorkItem (_ => { Interlocked.Increment (ref sum); Interlocked.Increment (ref total); });
                        }
-                       var start = DateTime.Now;
-                       while ((total != n || sum != 0) && (DateTime.Now - start).TotalSeconds < 60)
+                       var sw = Stopwatch.StartNew ();
+                       while ((total != n || sum != 0) && sw.Elapsed.TotalSeconds < 60)
                                Thread.Sleep (1000);
                        Assert.IsTrue (total == n, "#1");
                        Assert.IsTrue (sum   == 0, "#2");
@@ -160,7 +161,7 @@ namespace MonoTests.System.Threading
                public void GetAvailableThreads ()
                {
                        ManualResetEvent mre = new ManualResetEvent (false);
-                       DateTime start = DateTime.Now;
+                       var sw = Stopwatch.StartNew ();
                        int i, workerThreads, completionPortThreads;
 
                        try {
@@ -173,7 +174,7 @@ namespace MonoTests.System.Threading
 
                                        Console.WriteLine ("workerThreads = {0}, completionPortThreads = {1}", workerThreads, completionPortThreads);
 
-                                       if ((DateTime.Now - start).TotalSeconds >= 10)
+                                       if (sw.Elapsed.TotalSeconds >= 10)
                                                Assert.Fail ("did not reach 0 available threads");
 
                                        ThreadPool.QueueUserWorkItem (GetAvailableThreads_Callback, mre);