ASP.NET Tips: Looking at the finalization queue

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Looking at the finalization queue in the debugger

Useful IIS/ASP.NET Information provided by Microsoft Support Teams — Mon, 28 Apr 2008 19:17:33 GMT

Want to see what objects you have added a finalizer too, follow the information here .

re: ASP.NET Tips: Looking at the finalization queue

Nariman — Tue, 01 Dec 2009 15:52:25 GMT

Hi there; I think it's a mistake to suggest that GC.SuppressFinalize will 'remove' the object from the !finalizequeue in SOS - that you still see Systme.Data.DataTables (which call GC.SuppressFinalize) in their constructors is perfect evidence of this. Calling SuppressFinalize will prevent the promotion to FReachable and allow the object to be reclaimed on the first GC pass (just as non-finalizable objects would) but it will still list under this output. As such, this command in and of itself isn't very useful: a command in the *public* SOS that works for 2.x assemblies that shows FReachable or the Finalization Queue (where the bit in the header for finalization-requires is still set to ON) would help.

[1]-

http://www.devnewsgroups.net/dotnetframework/t19821-finalize-queue-windbg-sos.aspx

re: ASP.NET Tips: Looking at the finalization queue

Tom — Tue, 01 Dec 2009 17:01:35 GMT

Excellent point Nariman. I am updating the post to reflect that difference.