The gen0 collection copies everything over, so there is no need to clear the bits on the original objects.
The only exception is if there are pinned objects in the gen0. The bits are cleared in gc_heap::scavenge_pinned_objects in this case - look for clear_marked_pinned. -Jan This posting is provided "AS IS" with no warranties, and confers no rights. -----Original Message----- From: Discussion of the Rotor Shared Source CLI implementation [mailto:[EMAIL PROTECTED] On Behalf Of Albert Miranda Sent: Wednesday, December 10, 2003 3:37 AM To: [EMAIL PROTECTED] Subject: [DOTNET-ROTOR] Clearing Marked/Pinned Bits When an ephemeral collection is being performed, cross-generational references are traced, and objects containing such references are marked as live. This is ok if a gen1 collection is performed after that, but if it is not, those bits should be cleared in order not to corrupt the MethodTable pointer. However, we haven't been able to find the code that clears these bits if only a gen0 collection is performed (if a gen1 collection is performed, these ones are cleared in the sweep phase). We believe that if they're not cleared there may be problems in the execution of the program. Could anyone tell us where this clearing is performed, if it is somewhere, or are we wrong about that? Thank you for your patience Albert Miranda RSVP =================================== This list is hosted by DevelopMentor(r) http://www.develop.com NEW! ASP.NET courses you may be interested in: 2 Days of ASP.NET, 29 Sept 2003, in Redmond http://www.develop.com/courses/2daspdotnet Guerrilla ASP.NET, 13 Oct 2003, in Boston http://www.develop.com/courses/gaspdotnet View archives and manage your subscription(s) at http://discuss.develop.com =================================== This list is hosted by DevelopMentorŪ http://www.develop.com NEW! ASP.NET courses you may be interested in: 2 Days of ASP.NET, 29 Sept 2003, in Redmond http://www.develop.com/courses/2daspdotnet Guerrilla ASP.NET, 13 Oct 2003, in Boston http://www.develop.com/courses/gaspdotnet View archives and manage your subscription(s) at http://discuss.develop.com
