mcs/tests/test-105.cs

   1 using System;
   2 using System.Threading;
   3 using System.Runtime.InteropServices;
   4
   5 class Test {
   6         delegate int SimpleDelegate (int a);
   7
   8         static int F (int a) {
   9                 Console.WriteLine ("Test.F from delegate: " + a);
  10                 Thread.Sleep (200);
  11                 return a;
  12         }
  13
  14         static void async_callback (IAsyncResult ar)
  15         {
  16                 Console.WriteLine ("Async Callback " + ar.AsyncState);
  17         }
  18
  19         public static int Main () {
  20                 SimpleDelegate d = new SimpleDelegate (F);
  21                 AsyncCallback ac = new AsyncCallback (async_callback);
  22                 string state1 = "STATE1";
  23                 string state2 = "STATE2";
  24                 string state3 = "STATE3";
  25                 string state4 = "STATE4";
  26                 int fin = 0;
  27
  28                 IAsyncResult ar1 = d.BeginInvoke (1, ac, state1);
  29                 IAsyncResult ar2 = d.BeginInvoke (2, ac, state2);
  30                 IAsyncResult ar3 = d.BeginInvoke (3, ac, state3);
  31                 IAsyncResult ar4 = d.BeginInvoke (4, ac, state4);
  32
  33                 int res = d.EndInvoke (ar1);
  34
  35                 Console.WriteLine ("Result = " + res);
  36
  37                 try {
  38                         d.EndInvoke (ar1);
  39                 } catch (InvalidOperationException) {
  40                         Console.WriteLine ("cant execute EndInvoke twice ... OK");
  41                 }
  42
  43                 ar1.AsyncWaitHandle.WaitOne ();
  44                 if (ar1.IsCompleted) fin++;
  45                 Console.WriteLine ("completed1: " + ar1.IsCompleted);
  46                 ar2.AsyncWaitHandle.WaitOne ();
  47                 if (ar2.IsCompleted) fin++;
  48                 Console.WriteLine ("completed2: " + ar2.IsCompleted);
  49                 ar3.AsyncWaitHandle.WaitOne ();
  50                 if (ar3.IsCompleted) fin++;
  51                 Console.WriteLine ("completed3: " + ar3.IsCompleted);
  52                 ar4.AsyncWaitHandle.WaitOne ();
  53                 if (ar4.IsCompleted) fin++;
  54                 Console.WriteLine ("completed4: " + ar4.IsCompleted);
  55
  56                 if (fin != 4)
  57                         return 1;
  58
  59                 return 0;
  60         }
  61 }