mono/tests/cas/threads/tpool2.cs

   1 using System;
   2 using System.Security;
   3 using System.Security.Permissions;
   4 using System.Threading;
   5
   6 class Program {
   7
   8         static void ShowStackTrace (object o)
   9         {
  10                 if (debug)
  11                         Console.WriteLine ((int)o);
  12
  13                 try {
  14                         Console.WriteLine (Environment.UserName);
  15                         result = 0;
  16                 }
  17                 catch (SecurityException se) {
  18                         Console.WriteLine ("UNEXPECTED SecurityException {0}", se);
  19                         result = 1;
  20                 }
  21                 catch (Exception ex) {
  22                         Console.WriteLine ("UNEXPECTED {0}", ex);
  23                         result = 1;
  24                 }
  25         }
  26
  27         static bool debug;
  28         static int result = 0;
  29
  30         // this Deny will *NOT* prevent the Environment.UserName property from working
  31         // as the UnsafeQueueUserWorkItem method *DOESN'T* propagate the stack
  32         [EnvironmentPermission (SecurityAction.Deny, Read = "USERNAME")]
  33         static int Main (string[] args)
  34         {
  35                 debug = (args.Length > 0);
  36                 if (debug) {
  37                         SecurityManager.SecurityEnabled = (args [0] != "off");
  38                 }
  39
  40                 if (SecurityManager.SecurityEnabled) {
  41                         Console.WriteLine ("SecurityManager.SecurityEnabled: true");
  42                         ShowStackTrace ((object)-1);
  43                 } else {
  44                         Console.WriteLine ("SecurityManager.SecurityEnabled: false");
  45                 }
  46
  47                 result = 0;
  48                 for (int i=0; i < 5; i++)
  49                         ThreadPool.UnsafeQueueUserWorkItem (new WaitCallback (ShowStackTrace), i);
  50
  51                 System.Threading.Thread.Sleep (5000);
  52                 return result;
  53         }
  54 }