Big bag of pages

(BIBOP) Where data objects are tagged with some kind of

descriptor (giving their size or type for example) memory can

be saved by storing objects with the same descriptor in one

"page" of memory. The most significant bits of an object's

address are used as the BIBOP page number. This is looked up

in a BIBOP table to find the descriptor for all objects in

that page.

This idea is similar to the "zones" used in some Lisp

systems (e.g. LeLisp).

[David R. Hanson. "A portable storage management system for

the Icon programming language". Software - Practise and

Experience, 10:489-500 1980].

(1994-11-29)