mono/tests/async-with-cb-throws.cs

   1 using System;
   2 using System.Threading;
   3 using System.Runtime.InteropServices;
   4
   5 class AsyncException : Exception {}
   6
   7 class Tests
   8 {
   9         delegate int SimpleDelegate (int a);
  10
  11         static int cb_state = 0;
  12
  13         static int async_func (int a)
  14         {
  15                 Console.WriteLine ("async_func from delegate: " + a);
  16                 return 10;
  17         }
  18
  19         static int async_func_throws (int a)
  20         {
  21                 Console.WriteLine ("async_func_throws from delegate: " + a);
  22                 throw new AsyncException ();
  23         }
  24
  25         static void async_callback (IAsyncResult ar)
  26         {
  27                 Console.WriteLine ("Async Callback " + ar.AsyncState);
  28                 cb_state = 1;
  29         }
  30
  31         static int Main ()
  32         {
  33                 SimpleDelegate d = new SimpleDelegate (async_func_throws);
  34                 AsyncCallback ac = new AsyncCallback (async_callback);
  35                 string state1 = "STATE1";
  36
  37                 // Call delegate via ThreadPool and check that the exception is rethrown correctly
  38                 IAsyncResult ar1 = d.BeginInvoke (1, ac, state1);
  39
  40                 while (cb_state == 0)
  41                         Thread.Sleep (0);
  42
  43                 try {
  44                         d.EndInvoke (ar1);
  45                         Console.WriteLine ("NO EXCEPTION");
  46                         return 1;
  47                 } catch (AsyncException) {
  48                         Console.WriteLine ("received exception ... OK");
  49                         return 0;
  50                 } catch (Exception e) {
  51                         Console.WriteLine ("wrong exception {0}", e);
  52                         return 3;
  53                 }
  54         }
  55 }