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