[Mono-list] Problem with Thread.Abort()

[Lluis Sanchez]

Which mono version are you using? This works with 1.1.6.

On dv, 2005-04-08 at 18:31 +0100, peter wrote:
> In my continuing journey through /"Mono: a developers' handbook"/, in 
> the section in chapter 3 on threads, an example program calls 
> Thread.Abort() to kill the thread previously created, and exit the 
> program.  The code is as follows:
> 
> > // 03-keyfunc/07-threading/UseThreadPool.cs
> > using System;
> > using System.IO;
> > using System.Threading;
> >
> > public class UseThreadPool {
> >     private static Thread thread;
> >
> >     public static void Main(string[] args) {
> >         WaitCallback callback = new WaitCallback(Callback);
> >         Console.WriteLine("Calling QueueUserWorkItem()...");
> >         ThreadPool.QueueUserWorkItem(callback);
> >         
> >         Console.WriteLine("Hit return to exit.");
> >         Console.In.ReadLine();
> >         
> >         thread.Abort();
> >         
> >         Console.WriteLine("Done.");
> >     }
> >     
> >     private static void Callback(object state) {
> >         thread = Thread.CurrentThread;
> >         
> >         Console.WriteLine("Started thread {0}", thread.GetHashCode());
> >         
> >         Random random = new Random();
> >         for (int counter = 0; true; counter++) {
> >             try {
> >                 Thread.Sleep(random.Next(10000));
> >             } catch (ThreadAbortException) {
> >                 Console.WriteLine("Aborting thread");
> >                 // Environment.Exit(0);
> >             }
> >             Console.WriteLine("{0}: {1}", counter, DateTime.Now);
> >         }
> >     }
> > }
> >                
> 
> Obviously the expectation is that the call to Abort() will cause a 
> ThreadAbortException to be raised in the delegate method.  However this 
> doesn't happen for me.  Instead, the Main() method exits, but the thread 
> continues:
> 
> > peter@linux:~/monoDevelopersNotebook/03-keyfunc/07-threading> mono 
> > UseThreadPool.exe
> > Calling QueueUserWorkItem()...
> > Hit return to exit.
> > Started thread -1392333056
> > 0: 08/04/2005 18:27:10
> > 1: 08/04/2005 18:27:10
> >
> > Done.
> > 2: 08/04/2005 18:27:17
> > 3: 08/04/2005 18:27:18
> >
> > peter@linux:~/monoDevelopersNotebook/03-keyfunc/07-threading>
> 
> [Ctl]-C will stop the program, as you'd expect.
> 
> Is this a problem with me (likely), a problem with the book (possible), 
> a problem with the Mono threading implementation (unlikely), or 
> something I'm not bright enough to spot?
> 
> It's not the end of the world; but an explanation would be welcomed.  
> Just to put my mind at rest.
> 
> Thanks
> 
> Peter
> 
> 
> 
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