Hi all,

Can anyone tell me why the code below leaks?
Here is what I do:
1) create new AppDomain
2) create an instance of AppDomain2Class in it,
3) call a AppDomain2Class.Run() method
4) unload AppDomain
No additional assemblies are involved ( even if they were, unloading
AppDomain
supposed to unload all assemblies loaded in it)

Using PerfMon I can see that every call to
appDomain2.CreateInstanceAndUnwrap()
increases .NET CLR Loading "Current Classes Loaded" performance counter up
to 1 class
and it is never recovers back even after appdomain is unloaded

Also every 1000 iterations of the for loop looses around 525K of memory.

Is there something I missing here?

I am running this test under Windows XP SP2
.NET framework version: 1.1.4322.573

Cheers

Greg Volpert

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
using System;
namespace AppDomainTest
{
   class AppDomain1Class
   {
       [STAThread]
       static void Main(string[] args)
       {
           for (int counter = 0 ; counter < 1000 ; counter++ )
           {
               Console.WriteLine( counter.ToString() );
               AppDomain appDomain2 = null;
               try
               {
                   // 1. Creating the new appdomain:
                   appDomain2 = AppDomain.CreateDomain("AppDomain2", null, null);

                   // 2. Creating an AppDomain2Class object in the new AppDomain
                   // and returning the proxy to it:
                   string strAssemlyName = typeof(AppDomain2Class).Assembly.GetName().Name;
                   string strTypeName = typeof(AppDomain2Class).FullName;
                   AppDomain2Class objTest = (AppDomain2Class)appDomain2.CreateInstanceAndUnwrap( strAssemlyName, strTypeName );

                   // 3. Calling the AppDomain2Class.Run() method remotely:
                   objTest.Run();
               }
               finally
               {
                   // 4. Unloading appdomain and all its assemblies:
                   if ( appDomain2 != null )
                       AppDomain.Unload( appDomain2 );
               }
           }
       }
   }

   public class AppDomain2Class : MarshalByRefObject
   {
       ~AppDomain2Class()
       {
           // this is being called by GC, so it's not AppDomain2Class that is leaking
       }

       public void Run()
       {
       }
   }
}