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adding free-sizes complement to heap-sizes

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Alex Shinn 2015-06-15 21:34:25 +09:00
parent f5326fafc3
commit c33df79004
2 changed files with 42 additions and 1 deletions
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41
lib/chibi/heap-stats.c
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@ -151,16 +151,56 @@ static sexp sexp_heap_dump (sexp ctx, sexp self, sexp_sint_t n, sexp depth) {
return sexp_heap_walk(ctx, sexp_unbox_fixnum(depth), 1);
}
static sexp sexp_free_sizes (sexp ctx, sexp self, sexp_sint_t n) {
size_t freed;
sexp_uint_t sizes[256];
sexp_sint_t i;
sexp_heap h = sexp_context_heap(ctx);
sexp_free_list q;
sexp_gc_var2(res, tmp);
/* run gc once to remove unused variables */
sexp_gc(ctx, &freed);
/* initialize stats */
for (i=0; i<256; i++)
sizes[i]=0;
/* loop over each free block */
for ( ; h; h=h->next)
for (q=h->free_list; q; q=q->next)
sizes[q->size > 255 ? 255 : q->size]++;
/* build and return results */
sexp_gc_preserve2(ctx, res, tmp);
res = SEXP_NULL;
for (i=255; i>=0; i--)
if (sizes[i]) {
tmp = sexp_cons(ctx, sexp_make_fixnum(sexp_heap_chunks(i)), sexp_make_fixnum(sizes[i]));
res = sexp_cons(ctx, tmp, res);
}
sexp_gc_release2(ctx);
return res;
}
#else
static sexp sexp_heap_stats (sexp ctx, sexp self, sexp_sint_t n) {
return SEXP_NULL;
}
static sexp sexp_heap_sizes (sexp ctx, sexp self, sexp_sint_t n) {
return SEXP_NULL;
}
static sexp sexp_heap_dump (sexp ctx, sexp self, sexp_sint_t n, sexp depth) {
return SEXP_NULL;
}
static sexp sexp_free_sizes (sexp ctx, sexp self, sexp_sint_t n) {
return SEXP_NULL;
}
#endif
sexp sexp_init_library (sexp ctx, sexp self, sexp_sint_t n, sexp env, const char* version, const sexp_abi_identifier_t abi) {
@ -170,5 +210,6 @@ sexp sexp_init_library (sexp ctx, sexp self, sexp_sint_t n, sexp env, const char
sexp_define_foreign(ctx, env, "heap-stats", 0, sexp_heap_stats);
sexp_define_foreign(ctx, env, "heap-sizes", 0, sexp_heap_sizes);
sexp_define_foreign_opt(ctx, env, "heap-dump", 1, sexp_heap_dump, SEXP_ONE);
sexp_define_foreign(ctx, env, "free-sizes", 0, sexp_free_sizes);
return SEXP_VOID;
}

2
lib/chibi/heap-stats.sld
View file

@ -19,6 +19,6 @@
;;> These functions just return \scheme{'()} when using the Boehm GC.
(define-library (chibi heap-stats)
(export heap-stats heap-sizes heap-dump)
(export heap-stats heap-sizes heap-dump free-sizes)
(import (chibi))
(include-shared "heap-stats"))