Subj : [.NET] Memory Barriers
To   : comp.programming.threads
From : Cool Guy
Date : Wed Sep 14 2005 05:21 am

In the following code, is it safe to access Test.o in ThreadJob,
considering it's not volatile and no locking is involved in its access?

I think I remember reading that it's okay to do this if the variable is
only *written* to before the worker *reading* thread is created, but I'm
not sure.

-----

using System;
using System.Threading;

class EntryPoint
{
   static void Main() {
       Test t = new Test();
       t.DoSomething();
   }
}

class Test
{
   object o;

   public void DoSomething() {
       o = new Object();
       new Thread(new ThreadStart(ThreadJob)).Start();
   }

   void ThreadJob() {
       Console.WriteLine(o.ToString());
   }
}

.