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gc.c: implement GC.stat method

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Return a Hash with GC statistics: live, threshold, state,
generational, full. When MRB_GC_STATS is defined, also includes
total, minor, major counters.

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Yukihiro "Matz" Matsumoto
2026-03-10 16:19:36 +09:00
parent 52fb294172
commit 60cde305c1
1 changed files with 32 additions and 0 deletions
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src/gc.c
+32
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@@ -1694,6 +1694,37 @@ mrb_objspace_page_slot_size(void)
}
/*
* call-seq:
* GC.stat -> Hash
*
* Returns a Hash with GC statistics.
* Keys: :live, :threshold, :state, :generational, :full
* With MRB_GC_STATS: :total, :minor, :major
*
*/
static mrb_value
gc_stat(mrb_state *mrb, mrb_value self)
{
mrb_gc *gc = &mrb->gc;
mrb_value hash = mrb_hash_new_capa(mrb, 8);
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "live")), mrb_int_value(mrb, (mrb_int)gc->live));
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "threshold")), mrb_int_value(mrb, (mrb_int)gc->threshold));
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "state")), mrb_int_value(mrb, (mrb_int)gc->state));
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "generational")), mrb_bool_value(gc->generational));
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "full")), mrb_bool_value(gc->full));
#ifdef MRB_GC_STATS
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "total")), mrb_int_value(mrb, (mrb_int)gc->gc_total_count));
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "minor")), mrb_int_value(mrb, (mrb_int)gc->minor_gc_count));
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "major")), mrb_int_value(mrb, (mrb_int)gc->major_gc_count));
#endif
return hash;
}
void
mrb_init_gc(mrb_state *mrb)
{
@@ -1709,6 +1740,7 @@ mrb_init_gc(mrb_state *mrb)
gc = mrb_define_module_id(mrb, MRB_SYM(GC));
mrb_define_class_method_id(mrb, gc, MRB_SYM(stat), gc_stat, MRB_ARGS_NONE());
mrb_define_class_method_id(mrb, gc, MRB_SYM(start), gc_start, MRB_ARGS_NONE());
mrb_define_class_method_id(mrb, gc, MRB_SYM(enable), gc_enable, MRB_ARGS_NONE());
mrb_define_class_method_id(mrb, gc, MRB_SYM(disable), gc_disable, MRB_ARGS_NONE());