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#include <mruby.h>
#include <mruby/gc.h>
#include <mruby/hash.h>
#include <mruby/class.h>
struct os_count_struct {
mrb_int total;
mrb_int freed;
mrb_int counts[MRB_TT_MAXDEFINE+1];
};
static int
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->total++;
if (mrb_object_dead_p(mrb, obj)) {
obj_count->freed++;
}
else {
obj_count->counts[obj->tt]++;
}
return MRB_EACH_OBJ_OK;
}
/*
* call-seq:
* ObjectSpace.count_objects([result_hash]) -> hash
*
* Counts objects for each type.
*
* It returns a hash, such as:
* {
* :TOTAL=>10000,
* :FREE=>3011,
* :T_OBJECT=>6,
* :T_CLASS=>404,
* # ...
* }
*
* If the optional argument +result_hash+ is given,
* it is overwritten and returned. This is intended to avoid probe effect.
*
*/
static mrb_value
os_count_objects(mrb_state *mrb, mrb_value self)
{
struct os_count_struct obj_count = { 0 };
mrb_int i;
mrb_value hash;
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);
}
mrb_objspace_each_objects(mrb, os_count_object_type, &obj_count);
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "TOTAL")), mrb_fixnum_value(obj_count.total));
mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "FREE")), mrb_fixnum_value(obj_count.freed));
for (i = MRB_TT_FALSE; i < MRB_TT_MAXDEFINE; i++) {
mrb_value type;
switch (i) {
#define COUNT_TYPE(t) case (MRB_T ## t): type = mrb_symbol_value(mrb_intern_lit(mrb, #t)); break;
COUNT_TYPE(T_FALSE);
COUNT_TYPE(T_FREE);
COUNT_TYPE(T_TRUE);
COUNT_TYPE(T_FIXNUM);
COUNT_TYPE(T_SYMBOL);
COUNT_TYPE(T_UNDEF);
COUNT_TYPE(T_FLOAT);
COUNT_TYPE(T_CPTR);
COUNT_TYPE(T_OBJECT);
COUNT_TYPE(T_CLASS);
COUNT_TYPE(T_MODULE);
COUNT_TYPE(T_ICLASS);
COUNT_TYPE(T_SCLASS);
COUNT_TYPE(T_PROC);
COUNT_TYPE(T_ARRAY);
COUNT_TYPE(T_HASH);
COUNT_TYPE(T_STRING);
COUNT_TYPE(T_RANGE);
COUNT_TYPE(T_EXCEPTION);
COUNT_TYPE(T_FILE);
COUNT_TYPE(T_ENV);
COUNT_TYPE(T_DATA);
COUNT_TYPE(T_FIBER);
#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;
}
struct os_each_object_data {
mrb_value block;
struct RClass *target_module;
mrb_int count;
};
static int
os_each_object_cb(mrb_state *mrb, struct RBasic *obj, void *ud)
{
struct os_each_object_data *d = (struct os_each_object_data*)ud;
/* filter dead objects */
if (mrb_object_dead_p(mrb, obj)) {
return MRB_EACH_OBJ_OK;
}
/* filter internal objects */
switch (obj->tt) {
case MRB_TT_ENV:
case MRB_TT_ICLASS:
return MRB_EACH_OBJ_OK;
default:
break;
}
/* filter half baked (or internal) objects */
if (!obj->c) return MRB_EACH_OBJ_OK;
/* filter class kind if target module defined */
if (d->target_module && !mrb_obj_is_kind_of(mrb, mrb_obj_value(obj), d->target_module)) {
return MRB_EACH_OBJ_OK;
}
mrb_yield(mrb, d->block, mrb_obj_value(obj));
++d->count;
return MRB_EACH_OBJ_OK;
}
/*
* call-seq:
* ObjectSpace.each_object([module]) {|obj| ... } -> fixnum
*
* Calls the block once for each object in this Ruby process.
* Returns the number of objects found.
* If the optional argument +module+ is given,
* calls the block for only those classes or modules
* that match (or are a subclass of) +module+.
*
* If no block is given, ArgumentError is raised.
*
*/
static mrb_value
os_each_object(mrb_state *mrb, mrb_value self)
{
mrb_value cls = mrb_nil_value();
struct os_each_object_data d;
mrb_get_args(mrb, "&|C", &d.block, &cls);
if (mrb_nil_p(d.block)) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "Expected block in ObjectSpace.each_object.");
}
d.target_module = mrb_nil_p(cls) ? NULL : mrb_class_ptr(cls);
d.count = 0;
mrb_objspace_each_objects(mrb, os_each_object_cb, &d);
return mrb_fixnum_value(d.count);
}
void
mrb_mruby_objectspace_gem_init(mrb_state *mrb)
{
struct RClass *os = mrb_define_module(mrb, "ObjectSpace");
mrb_define_class_method(mrb, os, "count_objects", os_count_objects, MRB_ARGS_OPT(1));
mrb_define_class_method(mrb, os, "each_object", os_each_object, MRB_ARGS_OPT(1));
}
void
mrb_mruby_objectspace_gem_final(mrb_state *mrb)
{
}
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