50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
/* To walk the memory roots for garbage collection */
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#include "memory.h"
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#include "misc.h"
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#include "mlvalues.h"
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#include "roots.h"
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#include "stacks.h"
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value * local_roots = NULL;
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struct global_root {
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value * root;
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struct global_root * next;
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};
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static struct global_root * global_roots = NULL;
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void scan_local_roots (copy_fn)
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void (*copy_fn) ();
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{
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register value * sp;
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value * block;
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struct global_root * gr;
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/* The stack */
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for (sp = extern_sp; sp < stack_high; sp++) {
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copy_fn (sp, *sp);
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}
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/* Local C roots */
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for (block = local_roots; block != NULL; block = (value *) block [1]){
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for (sp = block - (long) block [0]; sp < block; sp++){
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copy_fn (sp, *sp);
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}
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}
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/* Global C roots */
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for (gr = global_roots; gr != NULL; gr = gr->next) {
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copy_fn(gr->root, *(gr->root));
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}
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}
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void register_global_root(r)
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value * r;
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{
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struct global_root * gr;
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gr = (struct global_root *) stat_alloc(sizeof(struct global_root));
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gr->root = r;
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gr->next = global_roots;
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global_roots = gr;
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}
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