[Ironruby-core] Adding a finalizer to a ruby object

Tomas Matousek Tomas.Matousek at microsoft.com
Mon Jan 11 16:35:22 EST 2010


We don’t support finalizers yet, but it shouldn’t be too much work to make ObjectSpace#define_finalizer work with Ruby objects. We might also consider providing some means to override CLR Finalize method.

Tomas

From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of Jimmy Schementi
Sent: Monday, January 11, 2010 12:45 AM
To: <ironruby-core at rubyforge.org>
Subject: Re: [Ironruby-core] Adding a finalizer to a ruby object

Ivan, I'm not sure but I've asked the rest of the team and someone will get back to you shortly.

~Jimmy

On Jan 11, 2010, at 12:00 AM, "Ivan Porto Carrero" <ivan at flanders.co.nz<mailto:ivan at flanders.co.nz>> wrote:
I specifically wanted to find a counterpart for this C#

public class SomeClass {

   private object _unmanagedResource;

   public SomeClass(object unmanagedResource){
     _unmanagedResource = unmanagedResource;
   }

  ~SomeClass(){
    _unmanagedResource.Cleanup();
    _unmanagedResource = null;
  }
}

I was writing about the dispose pattern and wanted to include a full counterpart implementation with a finalizer for unmanaged resources.

---
Met vriendelijke groeten - Best regards - Salutations
Ivan Porto Carrero
Blog: http://flanders.co.nz
Twitter: http://twitter.com/casualjim
Author of IronRuby in Action (http://manning.com/carrero)


On Mon, Jan 11, 2010 at 6:12 AM, Sam Clopton <lists at ruby-forum.com<mailto:lists at ruby-forum.com>> wrote:
Ivan Porto carrero wrote:
> Hi
>
> How do I add a finalizer to a ruby object?
>
> I've tried using ObjectSpace and define_finalizer.
> But the proc never got executed when I called
> ObjectSpace.garbage_collect
> Calling System::GC.collect had the same outcome
>
> and implementing a Finalize method doesn't seem to have any effect
> either
>
> class MyClass
>
>   def Finalize
>     puts "in Finalize"
>   end
>
>   def finalize
>     puts "in lower finalize"
>   end
>
> end

What about using a proc, or block and running finalize after yield or
proc.call?

-Sam
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