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Move object_id in object fields.

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And get rid of the `obj_to_id_tbl`

It's no longer needed, the `object_id` is now stored inline
in the object alongside instance variables.

We still need the inverse table in case `_id2ref` is invoked, but
we lazily build it by walking the heap if that happens.

The `object_id` concern is also no longer a GC implementation
concern, but a generic implementation.

Co-Authored-By: Matt Valentine-House <matt@eightbitraptor.com>
This commit is contained in:
Jean Boussier 2025-04-21 16:16:07 +09:00
parent d34c150547
commit f48e45d1e9
Notes: git 2025-05-08 05:58:19 +00:00
23 changed files with 1140 additions and 560 deletions
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20
shape.h
View file

@ -33,11 +33,13 @@ typedef uint32_t redblack_id_t;
# define SHAPE_MAX_VARIATIONS 8
# define INVALID_SHAPE_ID SHAPE_MASK
# define ROOT_SHAPE_ID 0x0
# define SPECIAL_CONST_SHAPE_ID (ROOT_SHAPE_ID + 1)
# define OBJ_TOO_COMPLEX_SHAPE_ID (SPECIAL_CONST_SHAPE_ID + 1)
# define FIRST_T_OBJECT_SHAPE_ID (OBJ_TOO_COMPLEX_SHAPE_ID + 1)
#define ROOT_SHAPE_ID 0x0
#define SPECIAL_CONST_SHAPE_ID 0x1
// ROOT_TOO_COMPLEX_SHAPE_ID 0x2
#define FIRST_T_OBJECT_SHAPE_ID 0x3
extern ID ruby_internal_object_id;
typedef struct redblack_node redblack_node_t;
@ -65,6 +67,7 @@ struct redblack_node {
enum shape_type {
SHAPE_ROOT,
SHAPE_IVAR,
SHAPE_OBJ_ID,
SHAPE_FROZEN,
SHAPE_T_OBJECT,
SHAPE_OBJ_TOO_COMPLEX,
@ -169,6 +172,9 @@ rb_shape_t *rb_shape_transition_shape_too_complex(VALUE obj);
bool rb_shape_transition_shape_remove_ivar(VALUE obj, ID id, rb_shape_t *shape, VALUE *removed);
rb_shape_t *rb_shape_get_next(rb_shape_t *shape, VALUE obj, ID id);
rb_shape_t *rb_shape_get_next_no_warnings(rb_shape_t *shape, VALUE obj, ID id);
rb_shape_t *rb_shape_object_id_shape(VALUE obj);
bool rb_shape_has_object_id(rb_shape_t *shape);
attr_index_t rb_shape_object_id_index(rb_shape_t *shape);
rb_shape_t *rb_shape_rebuild_shape(rb_shape_t *initial_shape, rb_shape_t *dest_shape);
@ -229,6 +235,12 @@ rb_shape_t *rb_shape_traverse_from_new_root(rb_shape_t *initial_shape, rb_shape_
bool rb_shape_set_shape_id(VALUE obj, shape_id_t shape_id);
static inline bool
rb_shape_obj_has_id(VALUE obj)
{
return rb_shape_has_object_id(rb_shape_get_shape(obj));
}
VALUE rb_obj_debug_shape(VALUE self, VALUE obj);
// For ext/objspace