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ruby--ruby/method.h
Alan Wu 264e4cd04f Remove write barrier exemption for T_ICLASS 
Before this commit, iclasses were "shady", or not protected by write
barriers. Because of that, the GC needs to spend more time marking these
objects than otherwise.

Applications that make heavy use of modules should see reduction in GC
time as they have a significant number of live iclasses on the heap.

 - Put logic for iclass method table ownership into a function
 - Remove calls to WB_UNPROTECT and insert write barriers for iclasses

This commit relies on the following invariant: for any non oirigin
iclass `I`, `RCLASS_M_TBL(I) == RCLASS_M_TBL(RBasic(I)->klass)`. This
invariant did not hold prior to 98286e9 for classes and modules that
have prepended modules.

[Feature #16984]
2020-08-17 17:17:47 -04:00

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#ifndef RUBY_METHOD_H
#define RUBY_METHOD_H 1
/**********************************************************************
method.h -
$Author$
created at: Wed Jul 15 20:02:33 2009
Copyright (C) 2009 Koichi Sasada
**********************************************************************/
#include "internal.h"
#include "internal/imemo.h"
#include "internal/compilers.h"
#include "internal/static_assert.h"
#ifndef END_OF_ENUMERATION
# if defined(__GNUC__) &&! defined(__STRICT_ANSI__)
# define END_OF_ENUMERATION(key)
# else
# define END_OF_ENUMERATION(key) END_OF_##key##_PLACEHOLDER = 0
# endif
#endif
/* cref */
typedef enum {
METHOD_VISI_UNDEF = 0x00,
METHOD_VISI_PUBLIC = 0x01,
METHOD_VISI_PRIVATE = 0x02,
METHOD_VISI_PROTECTED = 0x03,
METHOD_VISI_MASK = 0x03
} rb_method_visibility_t;
typedef struct rb_scope_visi_struct {
BITFIELD(rb_method_visibility_t, method_visi, 3);
unsigned int module_func : 1;
} rb_scope_visibility_t;
/*! CREF (Class REFerence) */
typedef struct rb_cref_struct {
VALUE flags;
VALUE refinements;
VALUE klass;
struct rb_cref_struct * next;
const rb_scope_visibility_t scope_visi;
} rb_cref_t;
/* method data type */
typedef struct rb_method_entry_struct {
VALUE flags;
VALUE defined_class;
struct rb_method_definition_struct * const def;
ID called_id;
VALUE owner;
} rb_method_entry_t;
typedef struct rb_callable_method_entry_struct { /* same fields with rb_method_entry_t */
VALUE flags;
const VALUE defined_class;
struct rb_method_definition_struct * const def;
ID called_id;
const VALUE owner;
} rb_callable_method_entry_t;
#define METHOD_ENTRY_VISI(me) (rb_method_visibility_t)(((me)->flags & (IMEMO_FL_USER0 | IMEMO_FL_USER1)) >> (IMEMO_FL_USHIFT+0))
#define METHOD_ENTRY_BASIC(me) (int) (((me)->flags & (IMEMO_FL_USER2 )) >> (IMEMO_FL_USHIFT+2))
#define METHOD_ENTRY_COMPLEMENTED(me) ((me)->flags & IMEMO_FL_USER3)
#define METHOD_ENTRY_COMPLEMENTED_SET(me) ((me)->flags |= IMEMO_FL_USER3)
#define METHOD_ENTRY_CACHED(me) ((me)->flags & IMEMO_FL_USER4)
#define METHOD_ENTRY_CACHED_SET(me) ((me)->flags |= IMEMO_FL_USER4)
#define METHOD_ENTRY_INVALIDATED(me) ((me)->flags & IMEMO_FL_USER5)
#define METHOD_ENTRY_INVALIDATED_SET(me) ((me)->flags |= IMEMO_FL_USER5)
#define METHOD_ENTRY_CACHEABLE(me) !(METHOD_ENTRY_VISI(me) == METHOD_VISI_PROTECTED)
static inline void
METHOD_ENTRY_VISI_SET(rb_method_entry_t *me, rb_method_visibility_t visi)
{
VM_ASSERT((int)visi >= 0 && visi <= 3);
me->flags = (me->flags & ~(IMEMO_FL_USER0 | IMEMO_FL_USER1)) | (visi << (IMEMO_FL_USHIFT+0));
}
static inline void
METHOD_ENTRY_BASIC_SET(rb_method_entry_t *me, unsigned int basic)
{
VM_ASSERT(basic <= 1);
me->flags = (me->flags & ~(IMEMO_FL_USER2 )) | (basic << (IMEMO_FL_USHIFT+2));
}
static inline void
METHOD_ENTRY_FLAGS_SET(rb_method_entry_t *me, rb_method_visibility_t visi, unsigned int basic)
{
VM_ASSERT((int)visi >= 0 && visi <= 3);
VM_ASSERT(basic <= 1);
me->flags =
(me->flags & ~(IMEMO_FL_USER0|IMEMO_FL_USER1|IMEMO_FL_USER2)) |
((visi << (IMEMO_FL_USHIFT+0)) | (basic << (IMEMO_FL_USHIFT+2)));
}
static inline void
METHOD_ENTRY_FLAGS_COPY(rb_method_entry_t *dst, const rb_method_entry_t *src)
{
dst->flags =
(dst->flags & ~(IMEMO_FL_USER0|IMEMO_FL_USER1|IMEMO_FL_USER2)) |
(src->flags & (IMEMO_FL_USER0|IMEMO_FL_USER1|IMEMO_FL_USER2));
}
typedef enum {
VM_METHOD_TYPE_ISEQ, /*!< Ruby method */
VM_METHOD_TYPE_CFUNC, /*!< C method */
VM_METHOD_TYPE_ATTRSET, /*!< attr_writer or attr_accessor */
VM_METHOD_TYPE_IVAR, /*!< attr_reader or attr_accessor */
VM_METHOD_TYPE_BMETHOD,
VM_METHOD_TYPE_ZSUPER,
VM_METHOD_TYPE_ALIAS,
VM_METHOD_TYPE_UNDEF,
VM_METHOD_TYPE_NOTIMPLEMENTED,
VM_METHOD_TYPE_OPTIMIZED, /*!< Kernel#send, Proc#call, etc */
VM_METHOD_TYPE_MISSING, /*!< wrapper for method_missing(id) */
VM_METHOD_TYPE_REFINED, /*!< refinement */
END_OF_ENUMERATION(VM_METHOD_TYPE)
} rb_method_type_t;
#define VM_METHOD_TYPE_MINIMUM_BITS 4
STATIC_ASSERT(VM_METHOD_TYPE_MINIMUM_BITS,
VM_METHOD_TYPE_REFINED <= (1<<VM_METHOD_TYPE_MINIMUM_BITS));
#ifndef rb_iseq_t
typedef struct rb_iseq_struct rb_iseq_t;
#define rb_iseq_t rb_iseq_t
#endif
typedef struct rb_method_iseq_struct {
rb_iseq_t * iseqptr; /*!< iseq pointer, should be separated from iseqval */
rb_cref_t * cref; /*!< class reference, should be marked */
} rb_method_iseq_t; /* check rb_add_method_iseq() when modify the fields */
typedef struct rb_method_cfunc_struct {
VALUE (*func)(ANYARGS);
VALUE (*invoker)(VALUE recv, int argc, const VALUE *argv, VALUE (*func)(ANYARGS));
int argc;
} rb_method_cfunc_t;
typedef struct rb_method_attr_struct {
ID id;
VALUE location; /* should be marked */
} rb_method_attr_t;
typedef struct rb_method_alias_struct {
struct rb_method_entry_struct * original_me; /* original_me->klass is original owner */
} rb_method_alias_t;
typedef struct rb_method_refined_struct {
struct rb_method_entry_struct * orig_me;
VALUE owner;
} rb_method_refined_t;
typedef struct rb_method_bmethod_struct {
VALUE proc; /* should be marked */
struct rb_hook_list_struct *hooks;
} rb_method_bmethod_t;
enum method_optimized_type {
OPTIMIZED_METHOD_TYPE_SEND,
OPTIMIZED_METHOD_TYPE_CALL,
OPTIMIZED_METHOD_TYPE_BLOCK_CALL,
OPTIMIZED_METHOD_TYPE__MAX
};
struct rb_method_definition_struct {
BITFIELD(rb_method_type_t, type, VM_METHOD_TYPE_MINIMUM_BITS);
int alias_count : 28;
int complemented_count : 28;
union {
rb_method_iseq_t iseq;
rb_method_cfunc_t cfunc;
rb_method_attr_t attr;
rb_method_alias_t alias;
rb_method_refined_t refined;
rb_method_bmethod_t bmethod;
enum method_optimized_type optimize_type;
} body;
ID original_id;
uintptr_t method_serial;
};
struct rb_id_table;
typedef struct rb_method_definition_struct rb_method_definition_t;
STATIC_ASSERT(sizeof_method_def, offsetof(rb_method_definition_t, body)==8);
#define UNDEFINED_METHOD_ENTRY_P(me) (!(me) || !(me)->def || (me)->def->type == VM_METHOD_TYPE_UNDEF)
#define UNDEFINED_REFINED_METHOD_P(def) \
((def)->type == VM_METHOD_TYPE_REFINED && \
UNDEFINED_METHOD_ENTRY_P((def)->body.refined.orig_me))
void rb_add_method_cfunc(VALUE klass, ID mid, VALUE (*func)(ANYARGS), int argc, rb_method_visibility_t visi);
void rb_add_method_iseq(VALUE klass, ID mid, const rb_iseq_t *iseq, rb_cref_t *cref, rb_method_visibility_t visi);
void rb_add_refined_method_entry(VALUE refined_class, ID mid);
void rb_add_method(VALUE klass, ID mid, rb_method_type_t type, void *option, rb_method_visibility_t visi);
rb_method_entry_t *rb_method_entry_set(VALUE klass, ID mid, const rb_method_entry_t *, rb_method_visibility_t noex);
rb_method_entry_t *rb_method_entry_create(ID called_id, VALUE klass, rb_method_visibility_t visi, const rb_method_definition_t *def);
const rb_method_entry_t *rb_method_entry_at(VALUE obj, ID id);
const rb_method_entry_t *rb_method_entry(VALUE klass, ID id);
const rb_method_entry_t *rb_method_entry_with_refinements(VALUE klass, ID id, VALUE *defined_class);
const rb_method_entry_t *rb_method_entry_without_refinements(VALUE klass, ID id, VALUE *defined_class);
const rb_method_entry_t *rb_resolve_refined_method(VALUE refinements, const rb_method_entry_t *me);
RUBY_SYMBOL_EXPORT_BEGIN
const rb_method_entry_t *rb_resolve_me_location(const rb_method_entry_t *, VALUE[5]);
RUBY_SYMBOL_EXPORT_END
const rb_callable_method_entry_t *rb_callable_method_entry(VALUE klass, ID id);
const rb_callable_method_entry_t *rb_callable_method_entry_with_refinements(VALUE klass, ID id, VALUE *defined_class);
const rb_callable_method_entry_t *rb_callable_method_entry_without_refinements(VALUE klass, ID id, VALUE *defined_class);
int rb_method_entry_arity(const rb_method_entry_t *me);
int rb_method_entry_eq(const rb_method_entry_t *m1, const rb_method_entry_t *m2);
st_index_t rb_hash_method_entry(st_index_t hash, const rb_method_entry_t *me);
VALUE rb_method_entry_location(const rb_method_entry_t *me);
void rb_free_method_entry(const rb_method_entry_t *me);
const rb_method_entry_t *rb_method_entry_clone(const rb_method_entry_t *me);
const rb_callable_method_entry_t *rb_method_entry_complement_defined_class(const rb_method_entry_t *src_me, ID called_id, VALUE defined_class);
void rb_method_entry_copy(rb_method_entry_t *dst, const rb_method_entry_t *src);
void rb_method_table_insert(VALUE klass, struct rb_id_table *table, ID method_id, const rb_method_entry_t *me);
void rb_scope_visibility_set(rb_method_visibility_t);
VALUE rb_unnamed_parameters(int arity);
void rb_clear_method_cache(VALUE klass_or_module, ID mid);
void rb_clear_method_cache_all(void);
#endif /* RUBY_METHOD_H */
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