[Gc] bottom_index

Hans Van den Eynden hans.vandeneynden at pandora.be
Tue Nov 16 00:05:55 PST 2004

On tree.html there is:

"Bottom_index structures contain slightly more information than just hdr 
pointers. The asc_link field is used to link all bottom_index structures 
in ascending order for fast traversal. This list is pointed to be 
GC_all_bottom_indices. It is maintained with the aid of key field that 
contains the high bits corresponding to the bottom_index."

What do you mean by 'fast traversal'? For what purpose will the gc 
traverse the bottom_index structures one by one??

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