[Mono-devel-list] Patch that implements WaitForPendingFinalizers

[Jeroen Frijters]

Gonzalo Paniagua Javier wrote:
> When running some xsp stuff, noticed that sometimes the DB 
> connections where not being closed... Then I tried 
> WaitForPendingFinalizers to see if there was any connection 
> object pending finalization and realized that it was an empty 
> function.
> 
> I've attached a patch for gc.c that solves this issue. It 
> also runs the finalizers upon domain shutdown so that the 
> finalizer in the attached finalizers-simple.cs is run.

I'm not sure if this is handled, but have you considered what happens if
the code inside the finalizer instantiates new objects that also have a
finalizer, you'll possibly be finalizing forever. I think that on
AppDomain unload Microsoft actually watches the number of objects on the
finalizer queue, and if it doesn't go down, it just stops calling the
finalizers.

Regards,
Jeroen