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#include <stdio.h>
#include <mruby.h>
#include <mruby/gc.h>
#include <mruby/hash.h>
#include <mruby/value.h>
/*
* call-seq:
* ObjectSpace.count_objects([result_hash]) -> hash
*
* Counts objects for each type.
*
* It returns a hash, such as:
* {
* :TOTAL=>10000,
* :FREE=>3011,
* :MRB_TT_OBJECT=>6,
* :MRB_TT_CLASS=>404,
* # ...
* }
*
* If the optional argument +result_hash+ is given,
* it is overwritten and returned. This is intended to avoid probe effect.
*
*/
struct os_count_struct {
size_t total;
size_t freed;
size_t counts[MRB_TT_MAXDEFINE+1];
};
void os_count_object_type(mrb_state *mrb, struct RBasic* obj, void *data)
{
struct os_count_struct* obj_count;
obj_count = (struct os_count_struct*)(data);
obj_count->counts[obj->tt]++;
if (is_dead(mrb, obj)) {
obj_count->freed++;
} else {
obj_count->total++;
}
}
mrb_value
os_count_objects(mrb_state *mrb, mrb_value self)
{
struct os_count_struct obj_count;
size_t i;
mrb_value hash;
struct heap_page* page = mrb->heaps;
if (mrb_get_args(mrb, "|H", &hash) == 0) {
hash = mrb_hash_new(mrb);
}
if (!mrb_test(mrb_hash_empty_p(mrb, hash))) {
mrb_hash_clear(mrb, hash);
}
for (i = 0; i <= MRB_TT_MAXDEFINE; i++) {
obj_count.counts[i] = 0;
}
obj_count.total = 0;
obj_count.freed = 0;
mrb_objspace_each_objects(mrb, os_count_object_type, &obj_count);
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_cstr(mrb, "TOTAL")), mrb_fixnum_value(obj_count.total));
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_cstr(mrb, "FREE")), mrb_fixnum_value(obj_count.freed));
for (i = 0; i < MRB_TT_MAXDEFINE; i++) {
mrb_value type;
switch (i) {
#define COUNT_TYPE(t) case (t): type = mrb_symbol_value(mrb_intern_cstr(mrb, #t)); break;
COUNT_TYPE(MRB_TT_FALSE);
COUNT_TYPE(MRB_TT_FREE);
COUNT_TYPE(MRB_TT_TRUE);
COUNT_TYPE(MRB_TT_FIXNUM);
COUNT_TYPE(MRB_TT_SYMBOL);
COUNT_TYPE(MRB_TT_UNDEF);
COUNT_TYPE(MRB_TT_FLOAT);
COUNT_TYPE(MRB_TT_VOIDP);
COUNT_TYPE(MRB_TT_OBJECT);
COUNT_TYPE(MRB_TT_CLASS);
COUNT_TYPE(MRB_TT_MODULE);
COUNT_TYPE(MRB_TT_ICLASS);
COUNT_TYPE(MRB_TT_SCLASS);
COUNT_TYPE(MRB_TT_PROC);
COUNT_TYPE(MRB_TT_ARRAY);
COUNT_TYPE(MRB_TT_HASH);
COUNT_TYPE(MRB_TT_STRING);
COUNT_TYPE(MRB_TT_RANGE);
COUNT_TYPE(MRB_TT_EXCEPTION);
COUNT_TYPE(MRB_TT_FILE);
COUNT_TYPE(MRB_TT_ENV);
COUNT_TYPE(MRB_TT_DATA);
#undef COUNT_TYPE
default: type = mrb_fixnum_value(i); break;
}
if (obj_count.counts[i])
mrb_hash_set(mrb, hash, type, mrb_fixnum_value(obj_count.counts[i]));
}
return hash;
}
void
mrb_mruby_objectspace_gem_init(mrb_state* mrb) {
struct RClass *os;
os = mrb_define_module(mrb, "ObjectSpace");
mrb_define_class_method(mrb, os, "count_objects", os_count_objects, MRB_ARGS_ANY());
}
void
mrb_mruby_objectspace_gem_final(mrb_state* mrb) {
// finalizer
}
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