mono/tests/finalizer-exception.cs

   1 using System;
   2 using System.Threading;
   3
   4 public class FinalizerException {
   5
   6         ~FinalizerException () {
   7                 throw new Exception ();
   8         }
   9
  10         static IntPtr aptr;
  11
  12         /*
  13          * We allocate the exception object deep down the stack so
  14          * that it doesn't get pinned.
  15          */
  16         public static unsafe void MakeException (int depth) {
  17                 // Avoid tail calls
  18                 int* values = stackalloc int [20];
  19                 aptr = new IntPtr (values);
  20                 if (depth <= 0) {
  21                         for (int i = 0; i < 10; i++)
  22                                 new FinalizerException ();
  23                         return;
  24                 }
  25                 MakeException (depth - 1);
  26         }
  27
  28         public static int Main () {
  29                 AppDomain.CurrentDomain.UnhandledException += (sender, args) => {
  30                         Console.WriteLine ("caught");
  31                         Environment.Exit (0);
  32                 };
  33
  34                 var t = new Thread (delegate () { MakeException (1024); });
  35                 t.Start ();
  36                 t.Join ();
  37
  38                 GC.Collect ();
  39                 GC.WaitForPendingFinalizers ();
  40
  41                 Thread.Sleep (Timeout.Infinite); // infinite wait so we don't race against the unhandled exception callback
  42
  43                 return 2;
  44         }
  45 }