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/*
* Interface routines assumed by gc()
*
* Copyright (C) Barak A. Pearlmutter.
* Released under the GPL version 2 or later.
*
*/
typedef struct object *pobj; /* pointer to a guy of the type we gc */
/*
* How to mark and unmark objects
*/
extern void gc_mark(pobj);
extern void gc_unmark(pobj);
extern int gc_marked(pobj);
/*
* How to count and access an object's children
*/
extern int n_children(pobj); /* how many children */
extern pobj child_n(pobj, int); /* child i, numbered 0..n-1 */
/*
* How to access the root set
*/
extern int root_size(void); /* number of things in root set */
extern pobj root_elt(int); /* element i of root set, numbered 0..n-1 */
/*
* How to access the free list
*/
extern void clear_freelist(void);
extern void add_to_free_list(pobj);
/*
* How to iterate through all objects in memory
*/
extern int N_OBJS;
extern pobj obj_number(int);
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