My question is: What can I do to P4 entries to mark them as available for re-use?
close: P0=P4[I1] close P0 # mark slot as free null P5 P4[I1]=P5 # set to NULL ret
you can test the entry by:
set P0, P4[I1] isnull P0, is_close # is_close:
Regards, Pete
leo