/
vm_method.c
2184 lines (1932 loc) · 60 KB
/
vm_method.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* This file is included by vm.c
*/
#include "id_table.h"
#define METHOD_DEBUG 0
#if OPT_GLOBAL_METHOD_CACHE
#ifndef GLOBAL_METHOD_CACHE_SIZE
#define GLOBAL_METHOD_CACHE_SIZE 0x800
#endif
#define LSB_ONLY(x) ((x) & ~((x) - 1))
#define POWER_OF_2_P(x) ((x) == LSB_ONLY(x))
#if !POWER_OF_2_P(GLOBAL_METHOD_CACHE_SIZE)
# error GLOBAL_METHOD_CACHE_SIZE must be power of 2
#endif
#ifndef GLOBAL_METHOD_CACHE_MASK
#define GLOBAL_METHOD_CACHE_MASK (GLOBAL_METHOD_CACHE_SIZE-1)
#endif
#define GLOBAL_METHOD_CACHE_KEY(c,m) ((((c)>>3)^(m))&(global_method_cache.mask))
#define GLOBAL_METHOD_CACHE(c,m) (global_method_cache.entries + GLOBAL_METHOD_CACHE_KEY(c,m))
#else
#define GLOBAL_METHOD_CACHE(c,m) (rb_bug("global method cache disabled improperly"), NULL)
#endif
static int vm_redefinition_check_flag(VALUE klass);
static void rb_vm_check_redefinition_opt_method(const rb_method_entry_t *me, VALUE klass);
#define object_id idObject_id
#define added idMethod_added
#define singleton_added idSingleton_method_added
#define removed idMethod_removed
#define singleton_removed idSingleton_method_removed
#define undefined idMethod_undefined
#define singleton_undefined idSingleton_method_undefined
#define attached id__attached__
struct cache_entry {
rb_serial_t method_state;
rb_serial_t class_serial;
ID mid;
rb_method_entry_t* me;
VALUE defined_class;
};
#if OPT_GLOBAL_METHOD_CACHE
static struct {
unsigned int size;
unsigned int mask;
struct cache_entry *entries;
} global_method_cache = {
GLOBAL_METHOD_CACHE_SIZE,
GLOBAL_METHOD_CACHE_MASK,
};
#endif
#define ruby_running (GET_VM()->running)
/* int ruby_running = 0; */
static void
rb_class_clear_method_cache(VALUE klass, VALUE arg)
{
mjit_remove_class_serial(RCLASS_SERIAL(klass));
RCLASS_SERIAL(klass) = rb_next_class_serial();
if (RB_TYPE_P(klass, T_ICLASS)) {
struct rb_id_table *table = RCLASS_CALLABLE_M_TBL(klass);
if (table) {
rb_id_table_clear(table);
}
}
else {
if (RCLASS_CALLABLE_M_TBL(klass) != 0) {
rb_obj_info_dump(klass);
rb_bug("RCLASS_CALLABLE_M_TBL(klass) != 0");
}
}
rb_class_foreach_subclass(klass, rb_class_clear_method_cache, arg);
}
void
rb_clear_constant_cache(void)
{
INC_GLOBAL_CONSTANT_STATE();
}
void
rb_clear_method_cache_by_class(VALUE klass)
{
if (klass && klass != Qundef) {
int global = klass == rb_cBasicObject || klass == rb_cObject || klass == rb_mKernel;
RUBY_DTRACE_HOOK(METHOD_CACHE_CLEAR, (global ? "global" : rb_class2name(klass)));
if (global) {
INC_GLOBAL_METHOD_STATE();
}
else {
rb_class_clear_method_cache(klass, Qnil);
}
}
if (klass == rb_mKernel) {
rb_subclass_entry_t *entry = RCLASS_EXT(klass)->subclasses;
for (; entry != NULL; entry = entry->next) {
struct rb_id_table *table = RCLASS_CALLABLE_M_TBL(entry->klass);
if (table)rb_id_table_clear(table);
}
}
}
VALUE
rb_f_notimplement(int argc, const VALUE *argv, VALUE obj)
{
rb_notimplement();
UNREACHABLE_RETURN(Qnil);
}
static void
rb_define_notimplement_method_id(VALUE mod, ID id, rb_method_visibility_t visi)
{
rb_add_method(mod, id, VM_METHOD_TYPE_NOTIMPLEMENTED, (void *)1, visi);
}
void
rb_add_method_cfunc(VALUE klass, ID mid, VALUE (*func)(ANYARGS), int argc, rb_method_visibility_t visi)
{
if (argc < -2 || 15 < argc) rb_raise(rb_eArgError, "arity out of range: %d for -2..15", argc);
if (func != rb_f_notimplement) {
rb_method_cfunc_t opt;
opt.func = func;
opt.argc = argc;
rb_add_method(klass, mid, VM_METHOD_TYPE_CFUNC, &opt, visi);
}
else {
rb_define_notimplement_method_id(klass, mid, visi);
}
}
static void
rb_method_definition_release(rb_method_definition_t *def, int complemented)
{
if (def != NULL) {
const int alias_count = def->alias_count;
const int complemented_count = def->complemented_count;
VM_ASSERT(alias_count >= 0);
VM_ASSERT(complemented_count >= 0);
if (alias_count + complemented_count == 0) {
if (METHOD_DEBUG) fprintf(stderr, "-%p-%s:%d,%d (remove)\n", (void *)def,
rb_id2name(def->original_id), alias_count, complemented_count);
VM_ASSERT(def->type == VM_METHOD_TYPE_BMETHOD ? def->body.bmethod.hooks == NULL : TRUE);
xfree(def);
}
else {
if (complemented) def->complemented_count--;
else if (def->alias_count > 0) def->alias_count--;
if (METHOD_DEBUG) fprintf(stderr, "-%p-%s:%d->%d,%d->%d (dec)\n", (void *)def, rb_id2name(def->original_id),
alias_count, def->alias_count, complemented_count, def->complemented_count);
}
}
}
void
rb_free_method_entry(const rb_method_entry_t *me)
{
rb_method_definition_release(me->def, METHOD_ENTRY_COMPLEMENTED(me));
}
static inline rb_method_entry_t *search_method(VALUE klass, ID id, VALUE *defined_class_ptr);
extern int rb_method_definition_eq(const rb_method_definition_t *d1, const rb_method_definition_t *d2);
static inline rb_method_entry_t *
lookup_method_table(VALUE klass, ID id)
{
st_data_t body;
struct rb_id_table *m_tbl = RCLASS_M_TBL(klass);
if (rb_id_table_lookup(m_tbl, id, &body)) {
return (rb_method_entry_t *) body;
}
else {
return 0;
}
}
static VALUE
(*call_cfunc_invoker_func(int argc))(VALUE (*func)(ANYARGS), VALUE recv, int argc, const VALUE *)
{
switch (argc) {
case -2: return &call_cfunc_m2;
case -1: return &call_cfunc_m1;
case 0: return &call_cfunc_0;
case 1: return &call_cfunc_1;
case 2: return &call_cfunc_2;
case 3: return &call_cfunc_3;
case 4: return &call_cfunc_4;
case 5: return &call_cfunc_5;
case 6: return &call_cfunc_6;
case 7: return &call_cfunc_7;
case 8: return &call_cfunc_8;
case 9: return &call_cfunc_9;
case 10: return &call_cfunc_10;
case 11: return &call_cfunc_11;
case 12: return &call_cfunc_12;
case 13: return &call_cfunc_13;
case 14: return &call_cfunc_14;
case 15: return &call_cfunc_15;
default:
rb_bug("call_cfunc_func: unsupported length: %d", argc);
}
}
static void
setup_method_cfunc_struct(rb_method_cfunc_t *cfunc, VALUE (*func)(), int argc)
{
cfunc->func = func;
cfunc->argc = argc;
cfunc->invoker = call_cfunc_invoker_func(argc);
}
MJIT_FUNC_EXPORTED void
rb_method_definition_set(const rb_method_entry_t *me, rb_method_definition_t *def, void *opts)
{
*(rb_method_definition_t **)&me->def = def;
if (opts != NULL) {
switch (def->type) {
case VM_METHOD_TYPE_ISEQ:
{
rb_method_iseq_t *iseq_body = (rb_method_iseq_t *)opts;
rb_cref_t *method_cref, *cref = iseq_body->cref;
/* setup iseq first (before invoking GC) */
RB_OBJ_WRITE(me, &def->body.iseq.iseqptr, iseq_body->iseqptr);
if (0) vm_cref_dump("rb_method_definition_create", cref);
if (cref) {
method_cref = cref;
}
else {
method_cref = vm_cref_new_toplevel(GET_EC()); /* TODO: can we reuse? */
}
RB_OBJ_WRITE(me, &def->body.iseq.cref, method_cref);
return;
}
case VM_METHOD_TYPE_CFUNC:
{
rb_method_cfunc_t *cfunc = (rb_method_cfunc_t *)opts;
setup_method_cfunc_struct(UNALIGNED_MEMBER_PTR(def, body.cfunc), cfunc->func, cfunc->argc);
return;
}
case VM_METHOD_TYPE_ATTRSET:
case VM_METHOD_TYPE_IVAR:
{
const rb_execution_context_t *ec = GET_EC();
rb_control_frame_t *cfp;
int line;
def->body.attr.id = (ID)(VALUE)opts;
cfp = rb_vm_get_ruby_level_next_cfp(ec, ec->cfp);
if (cfp && (line = rb_vm_get_sourceline(cfp))) {
VALUE location = rb_ary_new3(2, rb_iseq_path(cfp->iseq), INT2FIX(line));
RB_OBJ_WRITE(me, &def->body.attr.location, rb_ary_freeze(location));
}
else {
VM_ASSERT(def->body.attr.location == 0);
}
return;
}
case VM_METHOD_TYPE_BMETHOD:
RB_OBJ_WRITE(me, &def->body.bmethod.proc, (VALUE)opts);
return;
case VM_METHOD_TYPE_NOTIMPLEMENTED:
setup_method_cfunc_struct(UNALIGNED_MEMBER_PTR(def, body.cfunc), rb_f_notimplement, -1);
return;
case VM_METHOD_TYPE_OPTIMIZED:
def->body.optimize_type = (enum method_optimized_type)opts;
return;
case VM_METHOD_TYPE_REFINED:
{
const rb_method_refined_t *refined = (rb_method_refined_t *)opts;
RB_OBJ_WRITE(me, &def->body.refined.orig_me, refined->orig_me);
RB_OBJ_WRITE(me, &def->body.refined.owner, refined->owner);
return;
}
case VM_METHOD_TYPE_ALIAS:
RB_OBJ_WRITE(me, &def->body.alias.original_me, (rb_method_entry_t *)opts);
return;
case VM_METHOD_TYPE_ZSUPER:
case VM_METHOD_TYPE_UNDEF:
case VM_METHOD_TYPE_MISSING:
return;
}
}
}
static void
method_definition_reset(const rb_method_entry_t *me)
{
rb_method_definition_t *def = me->def;
switch(def->type) {
case VM_METHOD_TYPE_ISEQ:
RB_OBJ_WRITTEN(me, Qundef, def->body.iseq.iseqptr);
RB_OBJ_WRITTEN(me, Qundef, def->body.iseq.cref);
break;
case VM_METHOD_TYPE_ATTRSET:
case VM_METHOD_TYPE_IVAR:
RB_OBJ_WRITTEN(me, Qundef, def->body.attr.location);
break;
case VM_METHOD_TYPE_BMETHOD:
RB_OBJ_WRITTEN(me, Qundef, def->body.bmethod.proc);
/* give up to check all in a list */
if (def->body.bmethod.hooks) rb_gc_writebarrier_remember((VALUE)me);
break;
case VM_METHOD_TYPE_REFINED:
RB_OBJ_WRITTEN(me, Qundef, def->body.refined.orig_me);
RB_OBJ_WRITTEN(me, Qundef, def->body.refined.owner);
break;
case VM_METHOD_TYPE_ALIAS:
RB_OBJ_WRITTEN(me, Qundef, def->body.alias.original_me);
break;
case VM_METHOD_TYPE_CFUNC:
case VM_METHOD_TYPE_ZSUPER:
case VM_METHOD_TYPE_MISSING:
case VM_METHOD_TYPE_OPTIMIZED:
case VM_METHOD_TYPE_UNDEF:
case VM_METHOD_TYPE_NOTIMPLEMENTED:
break;
}
}
MJIT_FUNC_EXPORTED rb_method_definition_t *
rb_method_definition_create(rb_method_type_t type, ID mid)
{
rb_method_definition_t *def;
def = ZALLOC(rb_method_definition_t);
def->type = type;
def->original_id = mid;
return def;
}
static rb_method_definition_t *
method_definition_addref(rb_method_definition_t *def)
{
def->alias_count++;
if (METHOD_DEBUG) fprintf(stderr, "+%p-%s:%d\n", (void *)def, rb_id2name(def->original_id), def->alias_count);
return def;
}
static rb_method_definition_t *
method_definition_addref_complement(rb_method_definition_t *def)
{
def->complemented_count++;
if (METHOD_DEBUG) fprintf(stderr, "+%p-%s:%d\n", (void *)def, rb_id2name(def->original_id), def->complemented_count);
return def;
}
static rb_method_entry_t *
rb_method_entry_alloc(ID called_id, VALUE owner, VALUE defined_class, const rb_method_definition_t *def)
{
rb_method_entry_t *me = (rb_method_entry_t *)rb_imemo_new(imemo_ment, (VALUE)def, (VALUE)called_id, owner, defined_class);
return me;
}
static VALUE
filter_defined_class(VALUE klass)
{
switch (BUILTIN_TYPE(klass)) {
case T_CLASS:
return klass;
case T_MODULE:
return 0;
case T_ICLASS:
break;
}
rb_bug("filter_defined_class: %s", rb_obj_info(klass));
}
rb_method_entry_t *
rb_method_entry_create(ID called_id, VALUE klass, rb_method_visibility_t visi, const rb_method_definition_t *def)
{
rb_method_entry_t *me = rb_method_entry_alloc(called_id, klass, filter_defined_class(klass), def);
METHOD_ENTRY_FLAGS_SET(me, visi, ruby_running ? FALSE : TRUE);
if (def != NULL) method_definition_reset(me);
return me;
}
const rb_method_entry_t *
rb_method_entry_clone(const rb_method_entry_t *src_me)
{
rb_method_entry_t *me = rb_method_entry_alloc(src_me->called_id, src_me->owner, src_me->defined_class,
method_definition_addref(src_me->def));
METHOD_ENTRY_FLAGS_COPY(me, src_me);
return me;
}
MJIT_FUNC_EXPORTED 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)
{
rb_method_definition_t *def = src_me->def;
rb_method_entry_t *me;
struct {
const struct rb_method_entry_struct *orig_me;
VALUE owner;
} refined = {0};
if (!src_me->defined_class &&
def->type == VM_METHOD_TYPE_REFINED &&
def->body.refined.orig_me) {
const rb_method_entry_t *orig_me =
rb_method_entry_clone(def->body.refined.orig_me);
RB_OBJ_WRITE((VALUE)orig_me, &orig_me->defined_class, defined_class);
refined.orig_me = orig_me;
refined.owner = orig_me->owner;
def = NULL;
}
else {
def = method_definition_addref_complement(def);
}
me = rb_method_entry_alloc(called_id, src_me->owner, defined_class, def);
METHOD_ENTRY_FLAGS_COPY(me, src_me);
METHOD_ENTRY_COMPLEMENTED_SET(me);
if (!def) {
def = rb_method_definition_create(VM_METHOD_TYPE_REFINED, called_id);
rb_method_definition_set(me, def, &refined);
}
VM_ASSERT(RB_TYPE_P(me->owner, T_MODULE));
return (rb_callable_method_entry_t *)me;
}
void
rb_method_entry_copy(rb_method_entry_t *dst, const rb_method_entry_t *src)
{
*(rb_method_definition_t **)&dst->def = method_definition_addref(src->def);
method_definition_reset(dst);
dst->called_id = src->called_id;
RB_OBJ_WRITE((VALUE)dst, &dst->owner, src->owner);
RB_OBJ_WRITE((VALUE)dst, &dst->defined_class, src->defined_class);
METHOD_ENTRY_FLAGS_COPY(dst, src);
}
static void
make_method_entry_refined(VALUE owner, rb_method_entry_t *me)
{
if (me->def->type == VM_METHOD_TYPE_REFINED) {
return;
}
else {
struct {
struct rb_method_entry_struct *orig_me;
VALUE owner;
} refined;
rb_method_definition_t *def;
rb_vm_check_redefinition_opt_method(me, me->owner);
refined.orig_me =
rb_method_entry_alloc(me->called_id, me->owner,
me->defined_class ?
me->defined_class : owner,
method_definition_addref(me->def));
METHOD_ENTRY_FLAGS_COPY(refined.orig_me, me);
refined.owner = owner;
def = rb_method_definition_create(VM_METHOD_TYPE_REFINED, me->called_id);
rb_method_definition_set(me, def, (void *)&refined);
METHOD_ENTRY_VISI_SET(me, METHOD_VISI_PUBLIC);
}
}
void
rb_add_refined_method_entry(VALUE refined_class, ID mid)
{
rb_method_entry_t *me = lookup_method_table(refined_class, mid);
if (me) {
make_method_entry_refined(refined_class, me);
rb_clear_method_cache_by_class(refined_class);
}
else {
rb_add_method(refined_class, mid, VM_METHOD_TYPE_REFINED, 0, METHOD_VISI_PUBLIC);
}
}
static void
check_override_opt_method(VALUE klass, VALUE arg)
{
ID mid = (ID)arg;
const rb_method_entry_t *me, *newme;
if (vm_redefinition_check_flag(klass)) {
me = lookup_method_table(RCLASS_ORIGIN(klass), mid);
if (me) {
newme = rb_method_entry(klass, mid);
if (newme != me) rb_vm_check_redefinition_opt_method(me, me->owner);
}
}
rb_class_foreach_subclass(klass, check_override_opt_method, (VALUE)mid);
}
/*
* klass->method_table[mid] = method_entry(defined_class, visi, def)
*
* If def is given (!= NULL), then just use it and ignore original_id and otps.
* If not given, then make a new def with original_id and opts.
*/
static rb_method_entry_t *
rb_method_entry_make(VALUE klass, ID mid, VALUE defined_class, rb_method_visibility_t visi,
rb_method_type_t type, rb_method_definition_t *def, ID original_id, void *opts)
{
rb_method_entry_t *me;
struct rb_id_table *mtbl;
st_data_t data;
int make_refined = 0;
if (NIL_P(klass)) {
klass = rb_cObject;
}
if (!FL_TEST(klass, FL_SINGLETON) &&
type != VM_METHOD_TYPE_NOTIMPLEMENTED &&
type != VM_METHOD_TYPE_ZSUPER) {
switch (mid) {
case idInitialize:
case idInitialize_copy:
case idInitialize_clone:
case idInitialize_dup:
case idRespond_to_missing:
visi = METHOD_VISI_PRIVATE;
}
}
rb_class_modify_check(klass);
if (FL_TEST(klass, RMODULE_IS_REFINEMENT)) {
VALUE refined_class = rb_refinement_module_get_refined_class(klass);
rb_add_refined_method_entry(refined_class, mid);
}
if (type == VM_METHOD_TYPE_REFINED) {
rb_method_entry_t *old_me = lookup_method_table(RCLASS_ORIGIN(klass), mid);
if (old_me) rb_vm_check_redefinition_opt_method(old_me, klass);
}
else {
klass = RCLASS_ORIGIN(klass);
}
mtbl = RCLASS_M_TBL(klass);
/* check re-definition */
if (rb_id_table_lookup(mtbl, mid, &data)) {
rb_method_entry_t *old_me = (rb_method_entry_t *)data;
rb_method_definition_t *old_def = old_me->def;
if (rb_method_definition_eq(old_def, def)) return old_me;
rb_vm_check_redefinition_opt_method(old_me, klass);
if (old_def->type == VM_METHOD_TYPE_REFINED) make_refined = 1;
if (RTEST(ruby_verbose) &&
type != VM_METHOD_TYPE_UNDEF &&
(old_def->alias_count == 0) &&
!make_refined &&
old_def->type != VM_METHOD_TYPE_UNDEF &&
old_def->type != VM_METHOD_TYPE_ZSUPER &&
old_def->type != VM_METHOD_TYPE_ALIAS) {
const rb_iseq_t *iseq = 0;
rb_warning("method redefined; discarding old %"PRIsVALUE, rb_id2str(mid));
switch (old_def->type) {
case VM_METHOD_TYPE_ISEQ:
iseq = def_iseq_ptr(old_def);
break;
case VM_METHOD_TYPE_BMETHOD:
iseq = rb_proc_get_iseq(old_def->body.bmethod.proc, 0);
break;
default:
break;
}
if (iseq) {
rb_compile_warning(RSTRING_PTR(rb_iseq_path(iseq)),
FIX2INT(iseq->body->location.first_lineno),
"previous definition of %"PRIsVALUE" was here",
rb_id2str(old_def->original_id));
}
}
}
/* create method entry */
me = rb_method_entry_create(mid, defined_class, visi, NULL);
if (def == NULL) def = rb_method_definition_create(type, original_id);
rb_method_definition_set(me, def, opts);
rb_clear_method_cache_by_class(klass);
/* check mid */
if (klass == rb_cObject && mid == idInitialize) {
rb_warn("redefining Object#initialize may cause infinite loop");
}
/* check mid */
if (mid == object_id || mid == id__send__) {
if (type == VM_METHOD_TYPE_ISEQ && search_method(klass, mid, 0)) {
rb_warn("redefining `%s' may cause serious problems", rb_id2name(mid));
}
}
if (make_refined) {
make_method_entry_refined(klass, me);
}
rb_id_table_insert(mtbl, mid, (VALUE)me);
RB_OBJ_WRITTEN(klass, Qundef, (VALUE)me);
VM_ASSERT(me->def != NULL);
/* check optimized method override by a prepended module */
if (RB_TYPE_P(klass, T_MODULE)) {
check_override_opt_method(klass, (VALUE)mid);
}
return me;
}
#define CALL_METHOD_HOOK(klass, hook, mid) do { \
const VALUE arg = ID2SYM(mid); \
VALUE recv_class = (klass); \
ID hook_id = (hook); \
if (FL_TEST((klass), FL_SINGLETON)) { \
recv_class = rb_ivar_get((klass), attached); \
hook_id = singleton_##hook; \
} \
rb_funcallv(recv_class, hook_id, 1, &arg); \
} while (0)
static void
method_added(VALUE klass, ID mid)
{
if (ruby_running) {
CALL_METHOD_HOOK(klass, added, mid);
}
}
rb_method_entry_t *
rb_add_method(VALUE klass, ID mid, rb_method_type_t type, void *opts, rb_method_visibility_t visi)
{
rb_method_entry_t *me = rb_method_entry_make(klass, mid, klass, visi, type, NULL, mid, opts);
if (type != VM_METHOD_TYPE_UNDEF && type != VM_METHOD_TYPE_REFINED) {
method_added(klass, mid);
}
return me;
}
void
rb_add_method_iseq(VALUE klass, ID mid, const rb_iseq_t *iseq, rb_cref_t *cref, rb_method_visibility_t visi)
{
struct { /* should be same fields with rb_method_iseq_struct */
const rb_iseq_t *iseqptr;
rb_cref_t *cref;
} iseq_body;
iseq_body.iseqptr = iseq;
iseq_body.cref = cref;
rb_add_method(klass, mid, VM_METHOD_TYPE_ISEQ, &iseq_body, visi);
}
static rb_method_entry_t *
method_entry_set(VALUE klass, ID mid, const rb_method_entry_t *me,
rb_method_visibility_t visi, VALUE defined_class)
{
rb_method_entry_t *newme = rb_method_entry_make(klass, mid, defined_class, visi,
me->def->type, method_definition_addref(me->def), 0, NULL);
method_added(klass, mid);
return newme;
}
rb_method_entry_t *
rb_method_entry_set(VALUE klass, ID mid, const rb_method_entry_t *me, rb_method_visibility_t visi)
{
return method_entry_set(klass, mid, me, visi, klass);
}
#define UNDEF_ALLOC_FUNC ((rb_alloc_func_t)-1)
void
rb_define_alloc_func(VALUE klass, VALUE (*func)(VALUE))
{
Check_Type(klass, T_CLASS);
RCLASS_EXT(klass)->allocator = func;
}
void
rb_undef_alloc_func(VALUE klass)
{
rb_define_alloc_func(klass, UNDEF_ALLOC_FUNC);
}
rb_alloc_func_t
rb_get_alloc_func(VALUE klass)
{
Check_Type(klass, T_CLASS);
for (; klass; klass = RCLASS_SUPER(klass)) {
rb_alloc_func_t allocator = RCLASS_EXT(klass)->allocator;
if (allocator == UNDEF_ALLOC_FUNC) break;
if (allocator) return allocator;
}
return 0;
}
static inline rb_method_entry_t*
search_method(VALUE klass, ID id, VALUE *defined_class_ptr)
{
rb_method_entry_t *me;
for (; klass; klass = RCLASS_SUPER(klass)) {
RB_DEBUG_COUNTER_INC(mc_search_super);
if ((me = lookup_method_table(klass, id)) != 0) break;
}
if (defined_class_ptr)
*defined_class_ptr = klass;
return me;
}
const rb_method_entry_t *
rb_method_entry_at(VALUE klass, ID id)
{
return lookup_method_table(klass, id);
}
/*
* search method entry without the method cache.
*
* if you need method entry with method cache (normal case), use
* rb_method_entry() simply.
*/
static rb_method_entry_t *
method_entry_get_without_cache(VALUE klass, ID id,
VALUE *defined_class_ptr)
{
VALUE defined_class;
rb_method_entry_t *me = search_method(klass, id, &defined_class);
if (ruby_running) {
if (OPT_GLOBAL_METHOD_CACHE) {
struct cache_entry *ent;
ent = GLOBAL_METHOD_CACHE(klass, id);
ent->class_serial = RCLASS_SERIAL(klass);
ent->method_state = GET_GLOBAL_METHOD_STATE();
ent->defined_class = defined_class;
ent->mid = id;
if (UNDEFINED_METHOD_ENTRY_P(me)) {
me = ent->me = NULL;
}
else {
ent->me = me;
}
}
else if (UNDEFINED_METHOD_ENTRY_P(me)) {
me = NULL;
}
}
else if (UNDEFINED_METHOD_ENTRY_P(me)) {
me = NULL;
}
if (defined_class_ptr)
*defined_class_ptr = defined_class;
return me;
}
#if VM_DEBUG_VERIFY_METHOD_CACHE
static void
verify_method_cache(VALUE klass, ID id, VALUE defined_class, rb_method_entry_t *me)
{
VALUE actual_defined_class;
rb_method_entry_t *actual_me =
method_entry_get_without_cache(klass, id, &actual_defined_class);
if (me != actual_me || defined_class != actual_defined_class) {
rb_bug("method cache verification failed");
}
}
#endif
static rb_method_entry_t *
method_entry_get(VALUE klass, ID id, VALUE *defined_class_ptr)
{
#if OPT_GLOBAL_METHOD_CACHE
struct cache_entry *ent;
ent = GLOBAL_METHOD_CACHE(klass, id);
if (ent->method_state == GET_GLOBAL_METHOD_STATE() &&
ent->class_serial == RCLASS_SERIAL(klass) &&
ent->mid == id) {
#if VM_DEBUG_VERIFY_METHOD_CACHE
verify_method_cache(klass, id, ent->defined_class, ent->me);
#endif
if (defined_class_ptr) *defined_class_ptr = ent->defined_class;
RB_DEBUG_COUNTER_INC(mc_global_hit);
return ent->me;
}
#endif
RB_DEBUG_COUNTER_INC(mc_global_miss);
return method_entry_get_without_cache(klass, id, defined_class_ptr);
}
MJIT_FUNC_EXPORTED const rb_method_entry_t *
rb_method_entry(VALUE klass, ID id)
{
return method_entry_get(klass, id, NULL);
}
static const rb_callable_method_entry_t *
prepare_callable_method_entry(VALUE defined_class, ID id, const rb_method_entry_t *me)
{
struct rb_id_table *mtbl;
const rb_callable_method_entry_t *cme;
if (me && me->defined_class == 0) {
RB_DEBUG_COUNTER_INC(mc_cme_complement);
VM_ASSERT(RB_TYPE_P(defined_class, T_ICLASS) || RB_TYPE_P(defined_class, T_MODULE));
VM_ASSERT(me->defined_class == 0);
mtbl = RCLASS_CALLABLE_M_TBL(defined_class);
if (mtbl && rb_id_table_lookup(mtbl, id, (VALUE *)&me)) {
RB_DEBUG_COUNTER_INC(mc_cme_complement_hit);
cme = (rb_callable_method_entry_t *)me;
VM_ASSERT(callable_method_entry_p(cme));
}
else {
if (!mtbl) {
mtbl = RCLASS_EXT(defined_class)->callable_m_tbl = rb_id_table_create(0);
}
cme = rb_method_entry_complement_defined_class(me, me->called_id, defined_class);
rb_id_table_insert(mtbl, id, (VALUE)cme);
VM_ASSERT(callable_method_entry_p(cme));
}
}
else {
cme = (const rb_callable_method_entry_t *)me;
VM_ASSERT(callable_method_entry_p(cme));
}
return cme;
}
MJIT_FUNC_EXPORTED const rb_callable_method_entry_t *
rb_callable_method_entry(VALUE klass, ID id)
{
VALUE defined_class;
rb_method_entry_t *me = method_entry_get(klass, id, &defined_class);
return prepare_callable_method_entry(defined_class, id, me);
}
static const rb_method_entry_t *resolve_refined_method(VALUE refinements, const rb_method_entry_t *me, VALUE *defined_class_ptr);
static const rb_method_entry_t *
method_entry_resolve_refinement(VALUE klass, ID id, int with_refinement, VALUE *defined_class_ptr)
{
const rb_method_entry_t *me = method_entry_get(klass, id, defined_class_ptr);
if (me) {
if (me->def->type == VM_METHOD_TYPE_REFINED) {
if (with_refinement) {
const rb_cref_t *cref = rb_vm_cref();
VALUE refinements = cref ? CREF_REFINEMENTS(cref) : Qnil;
me = resolve_refined_method(refinements, me, defined_class_ptr);
}
else {
me = resolve_refined_method(Qnil, me, defined_class_ptr);
}
if (UNDEFINED_METHOD_ENTRY_P(me)) me = NULL;
}
}
return me;
}
MJIT_FUNC_EXPORTED const rb_callable_method_entry_t *
rb_callable_method_entry_with_refinements(VALUE klass, ID id, VALUE *defined_class_ptr)
{
VALUE defined_class, *dcp = defined_class_ptr ? defined_class_ptr : &defined_class;
const rb_method_entry_t *me = method_entry_resolve_refinement(klass, id, TRUE, dcp);
return prepare_callable_method_entry(*dcp, id, me);
}
const rb_method_entry_t *
rb_method_entry_without_refinements(VALUE klass, ID id, VALUE *defined_class_ptr)
{
return method_entry_resolve_refinement(klass, id, FALSE, defined_class_ptr);
}
MJIT_FUNC_EXPORTED const rb_callable_method_entry_t *
rb_callable_method_entry_without_refinements(VALUE klass, ID id, VALUE *defined_class_ptr)
{
VALUE defined_class, *dcp = defined_class_ptr ? defined_class_ptr : &defined_class;
const rb_method_entry_t *me = method_entry_resolve_refinement(klass, id, FALSE, dcp);
return prepare_callable_method_entry(*dcp, id, me);
}
static const rb_method_entry_t *
refined_method_original_method_entry(VALUE refinements, const rb_method_entry_t *me, VALUE *defined_class_ptr)
{
VALUE super;
if (me->def->body.refined.orig_me) {
if (defined_class_ptr) *defined_class_ptr = me->def->body.refined.orig_me->defined_class;
return me->def->body.refined.orig_me;
}
else if (!(super = RCLASS_SUPER(me->owner))) {
return 0;
}
else {
rb_method_entry_t *tmp_me;
tmp_me = method_entry_get(super, me->called_id, defined_class_ptr);
return resolve_refined_method(refinements, tmp_me, defined_class_ptr);
}
}
static const rb_method_entry_t *
resolve_refined_method(VALUE refinements, const rb_method_entry_t *me, VALUE *defined_class_ptr)
{
if (me && me->def->type == VM_METHOD_TYPE_REFINED) {
VALUE refinement;
rb_method_entry_t *tmp_me;
refinement = find_refinement(refinements, me->owner);
if (NIL_P(refinement)) {
return refined_method_original_method_entry(refinements, me, defined_class_ptr);
}
else {
tmp_me = method_entry_get(refinement, me->called_id, defined_class_ptr);
if (tmp_me && tmp_me->def->type != VM_METHOD_TYPE_REFINED) {
return tmp_me;
}
else {
return refined_method_original_method_entry(refinements, me, defined_class_ptr);
}
}
}
else {
return me;
}
}
const rb_method_entry_t *
rb_resolve_refined_method(VALUE refinements, const rb_method_entry_t *me)
{
return resolve_refined_method(refinements, me, NULL);
}
static const rb_callable_method_entry_t *
rb_resolve_refined_method_callable(VALUE refinements, const rb_callable_method_entry_t *me)
{
VALUE defined_class = me->defined_class;
const rb_method_entry_t *resolved_me = resolve_refined_method(refinements, (const rb_method_entry_t *)me, &defined_class);
if (resolved_me && resolved_me->defined_class == 0) {
return rb_method_entry_complement_defined_class(resolved_me, me->called_id, defined_class);
}
else {
return (const rb_callable_method_entry_t *)resolved_me;
}
}
static void
remove_method(VALUE klass, ID mid)
{
VALUE data;
rb_method_entry_t *me = 0;
VALUE self = klass;
klass = RCLASS_ORIGIN(klass);
rb_class_modify_check(klass);
if (mid == object_id || mid == id__send__ || mid == idInitialize) {
rb_warn("removing `%s' may cause serious problems", rb_id2name(mid));
}
if (!rb_id_table_lookup(RCLASS_M_TBL(klass), mid, &data) ||
!(me = (rb_method_entry_t *)data) ||
(!me->def || me->def->type == VM_METHOD_TYPE_UNDEF) ||
UNDEFINED_REFINED_METHOD_P(me->def)) {