mono/tests/monitor.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Reflection;
   4 using System.Runtime.InteropServices;
   5 using System.Threading;
   6
   7 public class Tests  {
   8         static void Main ()
   9         {
  10                 TestDriver.RunTests (typeof (Tests));
  11         }
  12
  13         // Check that try-catch clauses are not enlarged to encompass a Monitor.Enter
  14         public static int test_0_enter_catch_clause () {
  15                 try {
  16                         Monitor.Enter (null);
  17                         try {
  18                                 Console.WriteLine ();
  19                         } catch (Exception ex) {
  20                                 return 1;
  21                         }
  22                 } catch (Exception ex) {
  23                         return 0;
  24                 }
  25                 return 1;
  26         }
  27
  28         const int thread_count = 3;
  29
  30         // #651546
  31         public static int test_0_enter_abort_race () {
  32                 AppDomain ad = AppDomain.CreateDomain ("foo");
  33                 Thread t = new Thread (StartAppDomain);
  34                 t.Start (ad);
  35                 Thread.Sleep (thread_count * 100 * 2);
  36                 // This will abort the threads created by StartAppDomain
  37                 AppDomain.Unload (ad);
  38                 return 0;
  39         }
  40
  41         static void StartAppDomain (object dummy)
  42         {
  43                 ((AppDomain) dummy).DoCallBack (Main2);
  44         }
  45
  46         static void Main2 ()
  47         {
  48                 Thread[] t = new Thread [thread_count];
  49                 for (int i = 0; i < t.Length; i++) {
  50                         t[i] = new Thread (LockMe);
  51                         t[i].Start (i);
  52                         Thread.Sleep (100); // this is just so that gdb's [New Thread ...] message are properly coupled with our "Thread # entered" messages
  53                 }
  54                 Thread.Sleep ((int) (thread_count * 100 * 1.5));
  55         }
  56
  57         static object the_lock = new object ();
  58
  59         static void LockMe (object thread_id)
  60         {
  61                 bool unlocked = false;
  62                 try {
  63                         Monitor.Enter (the_lock);
  64                         try {
  65                                 Thread.Sleep (thread_count * 1000);
  66                         } finally {
  67                                 unlocked = true;
  68                                 Monitor.Exit (the_lock);
  69                         }
  70
  71                 } catch (Exception ex) {
  72                         if (!unlocked) {
  73                         }
  74                 } finally {
  75                 }
  76         }
  77 }