Hi Bruce, Thanks for the note. On Fri 15 Apr 2011 13:13, Bruce Hoult <bruce at hoult.org> writes: > If you want to know when a full collection starts then set up > GC_start_call_back I'll try that; thanks. It would be more convenient though if it were after GC ran, so that I could allocate data in the callback... Andy -- http://wingolog.org/