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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
|
/*****************************************************************************
Copyright (c) 2014, 2019, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2017, 2022, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file btr/btr0bulk.cc
The B-tree bulk load
Created 03/11/2014 Shaohua Wang
*******************************************************/
#include "btr0bulk.h"
#include "btr0btr.h"
#include "btr0cur.h"
#include "btr0pcur.h"
#include "ibuf0ibuf.h"
#include "page0page.h"
#include "trx0trx.h"
/** Innodb B-tree index fill factor for bulk load. */
uint innobase_fill_factor;
/** Initialize members, allocate page if needed and start mtr.
Note: we commit all mtrs on failure.
@return error code. */
dberr_t
PageBulk::init()
{
buf_block_t* new_block;
page_t* new_page;
ut_ad(m_heap == NULL);
m_heap = mem_heap_create(1000);
m_mtr.start();
m_index->set_modified(m_mtr);
if (m_page_no == FIL_NULL) {
mtr_t alloc_mtr;
/* We commit redo log for allocation by a separate mtr,
because we don't guarantee pages are committed following
the allocation order, and we will always generate redo log
for page allocation, even when creating a new tablespace. */
alloc_mtr.start();
m_index->set_modified(alloc_mtr);
uint32_t n_reserved;
dberr_t err = fsp_reserve_free_extents(
&n_reserved, m_index->table->space, 1, FSP_NORMAL,
&alloc_mtr);
if (UNIV_UNLIKELY(err != DB_SUCCESS)) {
oom:
alloc_mtr.commit();
m_mtr.commit();
return err;
}
/* Allocate a new page. */
new_block = btr_page_alloc(m_index, 0, FSP_UP, m_level,
&alloc_mtr, &m_mtr, &err);
if (!new_block) {
goto oom;
}
m_index->table->space->release_free_extents(n_reserved);
alloc_mtr.commit();
new_page = buf_block_get_frame(new_block);
m_page_no = new_block->page.id().page_no();
byte* index_id = my_assume_aligned<2>
(PAGE_HEADER + PAGE_INDEX_ID + new_page);
compile_time_assert(FIL_PAGE_NEXT == FIL_PAGE_PREV + 4);
compile_time_assert(FIL_NULL == 0xffffffff);
memset_aligned<8>(new_page + FIL_PAGE_PREV, 0xff, 8);
if (UNIV_LIKELY_NULL(new_block->page.zip.data)) {
mach_write_to_8(index_id, m_index->id);
page_create_zip(new_block, m_index, m_level, 0,
&m_mtr);
} else {
ut_ad(!m_index->is_spatial());
page_create(new_block, &m_mtr,
m_index->table->not_redundant());
m_mtr.memset(*new_block, FIL_PAGE_PREV, 8, 0xff);
m_mtr.write<2,mtr_t::MAYBE_NOP>(*new_block, PAGE_HEADER
+ PAGE_LEVEL
+ new_page, m_level);
m_mtr.write<8>(*new_block, index_id, m_index->id);
}
} else {
new_block = btr_block_get(*m_index, m_page_no, RW_X_LATCH,
false, &m_mtr);
if (!new_block) {
m_mtr.commit();
return(DB_CORRUPTION);
}
new_page = buf_block_get_frame(new_block);
ut_ad(page_dir_get_n_heap(new_page) == PAGE_HEAP_NO_USER_LOW);
btr_page_set_level(new_block, m_level, &m_mtr);
}
m_page_zip = buf_block_get_page_zip(new_block);
if (!m_level && dict_index_is_sec_or_ibuf(m_index)) {
page_update_max_trx_id(new_block, m_page_zip, m_trx_id,
&m_mtr);
}
m_block = new_block;
m_page = new_page;
m_cur_rec = page_get_infimum_rec(new_page);
ut_ad(m_is_comp == !!page_is_comp(new_page));
m_free_space = page_get_free_space_of_empty(m_is_comp);
if (innobase_fill_factor == 100 && dict_index_is_clust(m_index)) {
/* Keep default behavior compatible with 5.6 */
m_reserved_space = dict_index_get_space_reserve();
} else {
m_reserved_space =
srv_page_size * (100 - innobase_fill_factor) / 100;
}
m_padding_space =
srv_page_size - dict_index_zip_pad_optimal_page_size(m_index);
m_heap_top = page_header_get_ptr(new_page, PAGE_HEAP_TOP);
m_rec_no = page_header_get_field(new_page, PAGE_N_RECS);
/* Temporarily reset PAGE_DIRECTION_B from PAGE_NO_DIRECTION to 0,
without writing redo log, to ensure that needs_finish() will hold
on an empty page. */
ut_ad(m_page[PAGE_HEADER + PAGE_DIRECTION_B] == PAGE_NO_DIRECTION);
m_page[PAGE_HEADER + PAGE_DIRECTION_B] = 0;
ut_d(m_total_data = 0);
return(DB_SUCCESS);
}
/** Insert a record in the page.
@tparam fmt the page format
@param[in,out] rec record
@param[in] offsets record offsets */
template<PageBulk::format fmt>
inline void PageBulk::insertPage(rec_t *rec, rec_offs *offsets)
{
ut_ad((m_page_zip != nullptr) == (fmt == COMPRESSED));
ut_ad((fmt != REDUNDANT) == m_is_comp);
ut_ad(page_align(m_heap_top) == m_page);
ut_ad(m_heap);
const ulint rec_size= rec_offs_size(offsets);
const ulint extra_size= rec_offs_extra_size(offsets);
ut_ad(page_align(m_heap_top + rec_size) == m_page);
ut_d(const bool is_leaf= page_rec_is_leaf(m_cur_rec));
#ifdef UNIV_DEBUG
/* Check whether records are in order. */
if (page_offset(m_cur_rec) !=
(fmt == REDUNDANT ? PAGE_OLD_INFIMUM : PAGE_NEW_INFIMUM))
{
const rec_t *old_rec = m_cur_rec;
rec_offs *old_offsets= rec_get_offsets(old_rec, m_index, nullptr, is_leaf
? m_index->n_core_fields : 0,
ULINT_UNDEFINED, &m_heap);
ut_ad(cmp_rec_rec(rec, old_rec, offsets, old_offsets, m_index) > 0);
}
m_total_data+= rec_size;
#endif /* UNIV_DEBUG */
rec_t* const insert_rec= m_heap_top + extra_size;
/* Insert the record in the linked list. */
if (fmt != REDUNDANT)
{
const rec_t *next_rec= m_page +
page_offset(m_cur_rec + mach_read_from_2(m_cur_rec - REC_NEXT));
if (fmt != COMPRESSED)
m_mtr.write<2>(*m_block, m_cur_rec - REC_NEXT,
static_cast<uint16_t>(insert_rec - m_cur_rec));
else
{
mach_write_to_2(m_cur_rec - REC_NEXT,
static_cast<uint16_t>(insert_rec - m_cur_rec));
memcpy(m_heap_top, rec - extra_size, rec_size);
}
rec_t * const this_rec= fmt != COMPRESSED
? const_cast<rec_t*>(rec) : insert_rec;
rec_set_bit_field_1(this_rec, 0, REC_NEW_N_OWNED, REC_N_OWNED_MASK,
REC_N_OWNED_SHIFT);
rec_set_bit_field_2(this_rec, PAGE_HEAP_NO_USER_LOW + m_rec_no,
REC_NEW_HEAP_NO, REC_HEAP_NO_MASK, REC_HEAP_NO_SHIFT);
mach_write_to_2(this_rec - REC_NEXT,
static_cast<uint16_t>(next_rec - insert_rec));
}
else
{
memcpy(const_cast<rec_t*>(rec) - REC_NEXT, m_cur_rec - REC_NEXT, 2);
m_mtr.write<2>(*m_block, m_cur_rec - REC_NEXT, page_offset(insert_rec));
rec_set_bit_field_1(const_cast<rec_t*>(rec), 0,
REC_OLD_N_OWNED, REC_N_OWNED_MASK, REC_N_OWNED_SHIFT);
rec_set_bit_field_2(const_cast<rec_t*>(rec),
PAGE_HEAP_NO_USER_LOW + m_rec_no,
REC_OLD_HEAP_NO, REC_HEAP_NO_MASK, REC_HEAP_NO_SHIFT);
}
if (fmt == COMPRESSED)
/* We already wrote the record. Log is written in PageBulk::compress(). */;
else if (page_offset(m_cur_rec) ==
(fmt == REDUNDANT ? PAGE_OLD_INFIMUM : PAGE_NEW_INFIMUM))
m_mtr.memcpy(*m_block, m_heap_top, rec - extra_size, rec_size);
else
{
/* Try to copy common prefix from the preceding record. */
const byte *r= rec - extra_size;
const byte * const insert_rec_end= m_heap_top + rec_size;
byte *b= m_heap_top;
/* Skip any unchanged prefix of the record. */
for (; * b == *r; b++, r++);
ut_ad(b < insert_rec_end);
const byte *c= m_cur_rec - (rec - r);
const byte * const c_end= std::min(m_cur_rec + rec_offs_data_size(offsets),
m_heap_top);
/* Try to copy any bytes of the preceding record. */
if (UNIV_LIKELY(c >= m_page && c < c_end))
{
const byte *cm= c;
byte *bm= b;
const byte *rm= r;
for (; cm < c_end && *rm == *cm; cm++, bm++, rm++);
ut_ad(bm <= insert_rec_end);
size_t len= static_cast<size_t>(rm - r);
ut_ad(!memcmp(r, c, len));
if (len > 2)
{
memcpy(b, c, len);
m_mtr.memmove(*m_block, page_offset(b), page_offset(c), len);
c= cm;
b= bm;
r= rm;
}
}
if (c < m_cur_rec)
{
if (!rec_offs_data_size(offsets))
{
no_data:
m_mtr.memcpy<mtr_t::FORCED>(*m_block, b, r, m_cur_rec - c);
goto rec_done;
}
/* Some header bytes differ. Compare the data separately. */
const byte *cd= m_cur_rec;
byte *bd= insert_rec;
const byte *rd= rec;
/* Skip any unchanged prefix of the record. */
for (;; cd++, bd++, rd++)
if (bd == insert_rec_end)
goto no_data;
else if (*bd != *rd)
break;
/* Try to copy any data bytes of the preceding record. */
if (c_end - cd > 2)
{
const byte *cdm= cd;
const byte *rdm= rd;
for (; cdm < c_end && *rdm == *cdm; cdm++, rdm++)
ut_ad(rdm - rd + bd <= insert_rec_end);
size_t len= static_cast<size_t>(rdm - rd);
ut_ad(!memcmp(rd, cd, len));
if (len > 2)
{
m_mtr.memcpy<mtr_t::FORCED>(*m_block, b, r, m_cur_rec - c);
memcpy(bd, cd, len);
m_mtr.memmove(*m_block, page_offset(bd), page_offset(cd), len);
c= cdm;
b= rdm - rd + bd;
r= rdm;
}
}
}
if (size_t len= static_cast<size_t>(insert_rec_end - b))
m_mtr.memcpy<mtr_t::FORCED>(*m_block, b, r, len);
}
rec_done:
ut_ad(fmt == COMPRESSED || !memcmp(m_heap_top, rec - extra_size, rec_size));
rec_offs_make_valid(insert_rec, m_index, is_leaf, offsets);
/* Update the member variables. */
ulint slot_size= page_dir_calc_reserved_space(m_rec_no + 1) -
page_dir_calc_reserved_space(m_rec_no);
ut_ad(m_free_space >= rec_size + slot_size);
ut_ad(m_heap_top + rec_size < m_page + srv_page_size);
m_free_space-= rec_size + slot_size;
m_heap_top+= rec_size;
m_rec_no++;
m_cur_rec= insert_rec;
}
/** Insert a record in the page.
@param[in] rec record
@param[in] offsets record offsets */
inline void PageBulk::insert(const rec_t *rec, rec_offs *offsets)
{
byte rec_hdr[REC_N_OLD_EXTRA_BYTES];
static_assert(REC_N_OLD_EXTRA_BYTES > REC_N_NEW_EXTRA_BYTES, "file format");
if (UNIV_LIKELY_NULL(m_page_zip))
insertPage<COMPRESSED>(const_cast<rec_t*>(rec), offsets);
else if (m_is_comp)
{
memcpy(rec_hdr, rec - REC_N_NEW_EXTRA_BYTES, REC_N_NEW_EXTRA_BYTES);
insertPage<DYNAMIC>(const_cast<rec_t*>(rec), offsets);
memcpy(const_cast<rec_t*>(rec) - REC_N_NEW_EXTRA_BYTES, rec_hdr,
REC_N_NEW_EXTRA_BYTES);
}
else
{
memcpy(rec_hdr, rec - REC_N_OLD_EXTRA_BYTES, REC_N_OLD_EXTRA_BYTES);
insertPage<REDUNDANT>(const_cast<rec_t*>(rec), offsets);
memcpy(const_cast<rec_t*>(rec) - REC_N_OLD_EXTRA_BYTES, rec_hdr,
REC_N_OLD_EXTRA_BYTES);
}
}
/** Set the number of owned records in the uncompressed page of
a ROW_FORMAT=COMPRESSED record without redo-logging. */
static void rec_set_n_owned_zip(rec_t *rec, ulint n_owned)
{
rec_set_bit_field_1(rec, n_owned, REC_NEW_N_OWNED,
REC_N_OWNED_MASK, REC_N_OWNED_SHIFT);
}
/** Mark end of insertion to the page. Scan all records to set page dirs,
and set page header members.
@tparam fmt page format */
template<PageBulk::format fmt>
inline void PageBulk::finishPage()
{
ut_ad((m_page_zip != nullptr) == (fmt == COMPRESSED));
ut_ad((fmt != REDUNDANT) == m_is_comp);
ulint count= 0;
byte *slot= my_assume_aligned<2>(m_page + srv_page_size -
(PAGE_DIR + PAGE_DIR_SLOT_SIZE));
const page_dir_slot_t *const slot0 = slot;
compile_time_assert(PAGE_DIR_SLOT_SIZE == 2);
if (fmt != REDUNDANT)
{
uint16_t offset= mach_read_from_2(PAGE_NEW_INFIMUM - REC_NEXT + m_page);
ut_ad(offset >= PAGE_NEW_SUPREMUM - PAGE_NEW_INFIMUM);
offset= static_cast<uint16_t>(offset + PAGE_NEW_INFIMUM);
/* Set owner & dir. */
while (offset != PAGE_NEW_SUPREMUM)
{
ut_ad(offset >= PAGE_NEW_SUPREMUM);
ut_ad(offset < page_offset(slot));
count++;
if (count == (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2)
{
slot-= PAGE_DIR_SLOT_SIZE;
mach_write_to_2(slot, offset);
if (fmt != COMPRESSED)
page_rec_set_n_owned<false>(m_block, m_page + offset, count, true,
&m_mtr);
else
rec_set_n_owned_zip(m_page + offset, count);
count= 0;
}
uint16_t next= static_cast<uint16_t>
((mach_read_from_2(m_page + offset - REC_NEXT) + offset) &
(srv_page_size - 1));
ut_ad(next);
offset= next;
}
if (slot0 != slot && (count + 1 + (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2 <=
PAGE_DIR_SLOT_MAX_N_OWNED))
{
/* Merge the last two slots, like page_cur_insert_rec_low() does. */
count+= (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2;
rec_t *rec= const_cast<rec_t*>(page_dir_slot_get_rec(slot));
if (fmt != COMPRESSED)
page_rec_set_n_owned<false>(m_block, rec, 0, true, &m_mtr);
else
rec_set_n_owned_zip(rec, 0);
}
else
slot-= PAGE_DIR_SLOT_SIZE;
mach_write_to_2(slot, PAGE_NEW_SUPREMUM);
if (fmt != COMPRESSED)
page_rec_set_n_owned<false>(m_block, m_page + PAGE_NEW_SUPREMUM,
count + 1, true, &m_mtr);
else
rec_set_n_owned_zip(m_page + PAGE_NEW_SUPREMUM, count + 1);
}
else
{
rec_t *insert_rec= m_page +
mach_read_from_2(PAGE_OLD_INFIMUM - REC_NEXT + m_page);
/* Set owner & dir. */
while (insert_rec != m_page + PAGE_OLD_SUPREMUM)
{
count++;
if (count == (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2)
{
slot-= PAGE_DIR_SLOT_SIZE;
mach_write_to_2(slot, page_offset(insert_rec));
page_rec_set_n_owned<false>(m_block, insert_rec, count, false, &m_mtr);
count= 0;
}
insert_rec= m_page + mach_read_from_2(insert_rec - REC_NEXT);
}
if (slot0 != slot && (count + 1 + (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2 <=
PAGE_DIR_SLOT_MAX_N_OWNED))
{
/* Merge the last two slots, like page_cur_insert_rec_low() does. */
count+= (PAGE_DIR_SLOT_MAX_N_OWNED + 1) / 2;
rec_t *rec= const_cast<rec_t*>(page_dir_slot_get_rec(slot));
page_rec_set_n_owned<false>(m_block, rec, 0, false, &m_mtr);
}
else
slot-= PAGE_DIR_SLOT_SIZE;
mach_write_to_2(slot, PAGE_OLD_SUPREMUM);
page_rec_set_n_owned<false>(m_block, m_page + PAGE_OLD_SUPREMUM, count + 1,
false, &m_mtr);
}
if (!m_rec_no);
else if (fmt != COMPRESSED)
{
static_assert(PAGE_N_DIR_SLOTS == 0, "compatibility");
alignas(8) byte page_header[PAGE_N_HEAP + 2];
mach_write_to_2(page_header + PAGE_N_DIR_SLOTS,
1 + (slot0 - slot) / PAGE_DIR_SLOT_SIZE);
mach_write_to_2(page_header + PAGE_HEAP_TOP, m_heap_top - m_page);
mach_write_to_2(page_header + PAGE_N_HEAP,
(PAGE_HEAP_NO_USER_LOW + m_rec_no) |
uint16_t{fmt != REDUNDANT} << 15);
m_mtr.memcpy(*m_block, PAGE_HEADER + m_page, page_header,
sizeof page_header);
m_mtr.write<2>(*m_block, PAGE_HEADER + PAGE_N_RECS + m_page, m_rec_no);
m_mtr.memcpy(*m_block, page_offset(slot), slot0 - slot);
}
else
{
/* For ROW_FORMAT=COMPRESSED, redo log may be written in
PageBulk::compress(). */
mach_write_to_2(PAGE_HEADER + PAGE_N_DIR_SLOTS + m_page,
1 + (slot0 - slot) / PAGE_DIR_SLOT_SIZE);
mach_write_to_2(PAGE_HEADER + PAGE_HEAP_TOP + m_page,
static_cast<ulint>(m_heap_top - m_page));
mach_write_to_2(PAGE_HEADER + PAGE_N_HEAP + m_page,
(PAGE_HEAP_NO_USER_LOW + m_rec_no) | 1U << 15);
mach_write_to_2(PAGE_HEADER + PAGE_N_RECS + m_page, m_rec_no);
}
}
inline bool PageBulk::needs_finish() const
{
ut_ad(page_align(m_cur_rec) == m_block->page.frame);
ut_ad(m_page == m_block->page.frame);
if (!m_page[PAGE_HEADER + PAGE_DIRECTION_B])
return true;
ulint heap_no, n_heap= page_header_get_field(m_page, PAGE_N_HEAP);
ut_ad((n_heap & 0x7fff) >= PAGE_HEAP_NO_USER_LOW);
if (n_heap & 0x8000)
{
n_heap&= 0x7fff;
heap_no= rec_get_heap_no_new(m_cur_rec);
if (heap_no == PAGE_HEAP_NO_INFIMUM &&
page_header_get_field(m_page, PAGE_HEAP_TOP) == PAGE_NEW_SUPREMUM_END)
return false;
}
else
{
heap_no= rec_get_heap_no_old(m_cur_rec);
if (heap_no == PAGE_HEAP_NO_INFIMUM &&
page_header_get_field(m_page, PAGE_HEAP_TOP) == PAGE_OLD_SUPREMUM_END)
return false;
}
return heap_no != n_heap - 1;
}
/** Mark end of insertion to the page. Scan all records to set page dirs,
and set page header members.
@tparam compressed whether the page is in ROW_FORMAT=COMPRESSED */
inline void PageBulk::finish()
{
ut_ad(!m_index->is_spatial());
if (!needs_finish());
else if (UNIV_LIKELY_NULL(m_page_zip))
finishPage<COMPRESSED>();
else if (m_is_comp)
finishPage<DYNAMIC>();
else
finishPage<REDUNDANT>();
/* In MariaDB 10.2, 10.3, 10.4, we would initialize
PAGE_DIRECTION_B, PAGE_N_DIRECTION, PAGE_LAST_INSERT
in the same way as we would during normal INSERT operations.
Starting with MariaDB Server 10.5, bulk insert will not
touch those fields. */
ut_ad(!m_page[PAGE_HEADER + PAGE_INSTANT]);
/* Restore the temporary change of PageBulk::init() that was necessary to
ensure that PageBulk::needs_finish() holds on an empty page. */
m_page[PAGE_HEADER + PAGE_DIRECTION_B]= PAGE_NO_DIRECTION;
ut_ad(!page_header_get_field(m_page, PAGE_FREE));
ut_ad(!page_header_get_field(m_page, PAGE_GARBAGE));
ut_ad(!page_header_get_field(m_page, PAGE_LAST_INSERT));
ut_ad(!page_header_get_field(m_page, PAGE_N_DIRECTION));
ut_ad(m_total_data + page_dir_calc_reserved_space(m_rec_no) <=
page_get_free_space_of_empty(m_is_comp));
ut_ad(!needs_finish());
ut_ad(page_validate(m_page, m_index));
}
/** Commit inserts done to the page
@param[in] success Flag whether all inserts succeed. */
void PageBulk::commit(bool success)
{
finish();
if (success && !m_index->is_clust() && page_is_leaf(m_page))
ibuf_set_bitmap_for_bulk_load(m_block, &m_mtr,
innobase_fill_factor == 100);
m_mtr.commit();
}
/** Compress a page of compressed table
@return true compress successfully or no need to compress
@return false compress failed. */
bool
PageBulk::compress()
{
ut_ad(m_page_zip != NULL);
return page_zip_compress(m_block, m_index, page_zip_level, &m_mtr);
}
/** Get node pointer
@return node pointer */
dtuple_t*
PageBulk::getNodePtr()
{
rec_t* first_rec;
dtuple_t* node_ptr;
/* Create node pointer */
first_rec = page_rec_get_next(page_get_infimum_rec(m_page));
ut_a(page_rec_is_user_rec(first_rec));
node_ptr = dict_index_build_node_ptr(m_index, first_rec, m_page_no,
m_heap, m_level);
return(node_ptr);
}
/** Get split rec in left page.We split a page in half when compresssion fails,
and the split rec will be copied to right page.
@return split rec */
rec_t*
PageBulk::getSplitRec()
{
rec_t* rec;
rec_offs* offsets;
ulint total_used_size;
ulint total_recs_size;
ulint n_recs;
ut_ad(m_page_zip != NULL);
ut_ad(m_rec_no >= 2);
ut_ad(!m_index->is_instant());
ut_ad(page_get_free_space_of_empty(m_is_comp) > m_free_space);
total_used_size = page_get_free_space_of_empty(m_is_comp)
- m_free_space;
total_recs_size = 0;
n_recs = 0;
offsets = NULL;
rec = page_get_infimum_rec(m_page);
const ulint n_core = page_is_leaf(m_page) ? m_index->n_core_fields : 0;
do {
rec = page_rec_get_next(rec);
ut_ad(page_rec_is_user_rec(rec));
offsets = rec_get_offsets(rec, m_index, offsets, n_core,
ULINT_UNDEFINED, &m_heap);
total_recs_size += rec_offs_size(offsets);
n_recs++;
} while (total_recs_size + page_dir_calc_reserved_space(n_recs)
< total_used_size / 2);
/* Keep at least one record on left page */
if (page_rec_is_first(rec, m_page)) {
rec = page_rec_get_next(rec);
ut_ad(page_rec_is_user_rec(rec));
}
return(rec);
}
/** Copy all records after split rec including itself.
@param[in] rec split rec */
void
PageBulk::copyIn(
rec_t* split_rec)
{
rec_t* rec = split_rec;
rec_offs* offsets = NULL;
ut_ad(m_rec_no == 0);
ut_ad(page_rec_is_user_rec(rec));
const ulint n_core = page_rec_is_leaf(rec)
? m_index->n_core_fields : 0;
do {
offsets = rec_get_offsets(rec, m_index, offsets, n_core,
ULINT_UNDEFINED, &m_heap);
insert(rec, offsets);
rec = page_rec_get_next(rec);
} while (!page_rec_is_supremum(rec));
ut_ad(m_rec_no > 0);
}
/** Remove all records after split rec including itself.
@param[in] rec split rec */
void
PageBulk::copyOut(
rec_t* split_rec)
{
/* Suppose before copyOut, we have 5 records on the page:
infimum->r1->r2->r3->r4->r5->supremum, and r3 is the split rec.
after copyOut, we have 2 records on the page:
infimum->r1->r2->supremum. slot ajustment is not done. */
rec_t *rec = page_get_infimum_rec(m_page);
ulint n;
for (n = 0;; n++) {
rec_t *next = page_rec_get_next(rec);
if (next == split_rec) {
break;
}
rec = next;
}
ut_ad(n > 0);
const rec_t *last_rec = split_rec;
for (;;) {
const rec_t *next = page_rec_get_next_const(last_rec);
if (page_rec_is_supremum(next)) {
break;
}
last_rec = next;
}
/* Set last record's next in page */
const ulint n_core = page_rec_is_leaf(split_rec)
? m_index->n_core_fields : 0;
rec_offs* offsets = rec_get_offsets(rec, m_index, nullptr, n_core,
ULINT_UNDEFINED, &m_heap);
mach_write_to_2(rec - REC_NEXT, m_is_comp
? static_cast<uint16_t>
(PAGE_NEW_SUPREMUM - page_offset(rec))
: PAGE_OLD_SUPREMUM);
/* Set related members */
m_cur_rec = rec;
m_heap_top = rec_get_end(rec, offsets);
offsets = rec_get_offsets(last_rec, m_index, offsets, n_core,
ULINT_UNDEFINED, &m_heap);
m_free_space += ulint(rec_get_end(last_rec, offsets) - m_heap_top)
+ page_dir_calc_reserved_space(m_rec_no)
- page_dir_calc_reserved_space(n);
ut_ad(lint(m_free_space) > 0);
m_rec_no = n;
#ifdef UNIV_DEBUG
m_total_data -= ulint(rec_get_end(last_rec, offsets) - m_heap_top);
#endif /* UNIV_DEBUG */
}
/** Set next page
@param[in] next_page_no next page no */
inline void PageBulk::setNext(ulint next_page_no)
{
if (UNIV_LIKELY_NULL(m_page_zip))
/* For ROW_FORMAT=COMPRESSED, redo log may be written
in PageBulk::compress(). */
mach_write_to_4(m_page + FIL_PAGE_NEXT, next_page_no);
else
m_mtr.write<4>(*m_block, m_page + FIL_PAGE_NEXT, next_page_no);
}
/** Set previous page
@param[in] prev_page_no previous page no */
inline void PageBulk::setPrev(ulint prev_page_no)
{
if (UNIV_LIKELY_NULL(m_page_zip))
/* For ROW_FORMAT=COMPRESSED, redo log may be written
in PageBulk::compress(). */
mach_write_to_4(m_page + FIL_PAGE_PREV, prev_page_no);
else
m_mtr.write<4>(*m_block, m_page + FIL_PAGE_PREV, prev_page_no);
}
/** Check if required space is available in the page for the rec to be inserted.
We check fill factor & padding here.
@param[in] length required length
@return true if space is available */
bool
PageBulk::isSpaceAvailable(
ulint rec_size)
{
if (m_rec_no >= 8190) {
ut_ad(srv_page_size == 65536);
return false;
}
ulint slot_size;
ulint required_space;
slot_size = page_dir_calc_reserved_space(m_rec_no + 1)
- page_dir_calc_reserved_space(m_rec_no);
required_space = rec_size + slot_size;
if (required_space > m_free_space) {
ut_ad(m_rec_no > 0);
return false;
}
/* Fillfactor & Padding apply to both leaf and non-leaf pages.
Note: we keep at least 2 records in a page to avoid B-tree level
growing too high. */
if (m_rec_no >= 2
&& ((m_page_zip == NULL && m_free_space - required_space
< m_reserved_space)
|| (m_page_zip != NULL && m_free_space - required_space
< m_padding_space))) {
return(false);
}
return(true);
}
/** Check whether the record needs to be stored externally.
@return false if the entire record can be stored locally on the page */
bool
PageBulk::needExt(
const dtuple_t* tuple,
ulint rec_size)
{
return page_zip_rec_needs_ext(rec_size, m_is_comp,
dtuple_get_n_fields(tuple),
m_block->zip_size());
}
/** Store external record
Since the record is not logged yet, so we don't log update to the record.
the blob data is logged first, then the record is logged in bulk mode.
@param[in] big_rec external recrod
@param[in] offsets record offsets
@return error code */
dberr_t
PageBulk::storeExt(
const big_rec_t* big_rec,
rec_offs* offsets)
{
finish();
/* Note: not all fields are initialized in btr_pcur. */
btr_pcur_t btr_pcur;
btr_pcur.pos_state = BTR_PCUR_IS_POSITIONED;
btr_pcur.latch_mode = BTR_MODIFY_LEAF;
btr_pcur.btr_cur.index = m_index;
btr_pcur.btr_cur.page_cur.index = m_index;
btr_pcur.btr_cur.page_cur.rec = m_cur_rec;
btr_pcur.btr_cur.page_cur.offsets = offsets;
btr_pcur.btr_cur.page_cur.block = m_block;
dberr_t err = btr_store_big_rec_extern_fields(
&btr_pcur, offsets, big_rec, &m_mtr, BTR_STORE_INSERT_BULK);
return(err);
}
/** Release block by commiting mtr
Note: log_free_check requires holding no lock/latch in current thread. */
void
PageBulk::release()
{
finish();
/* We fix the block because we will re-pin it soon. */
m_block->page.fix();
/* No other threads can modify this block. */
m_modify_clock = buf_block_get_modify_clock(m_block);
m_mtr.commit();
}
/** Start mtr and latch the block */
void PageBulk::latch()
{
m_mtr.start();
m_index->set_modified(m_mtr);
#ifdef BTR_CUR_HASH_ADAPT
ut_ad(!m_block->index);
#endif
m_block->page.lock.x_lock();
ut_ad(m_block->page.buf_fix_count());
m_mtr.memo_push(m_block, MTR_MEMO_PAGE_X_FIX);
ut_ad(m_cur_rec > m_page);
ut_ad(m_cur_rec < m_heap_top);
}
/** Split a page
@param[in] page_bulk page to split
@param[in] next_page_bulk next page
@return error code */
dberr_t
BtrBulk::pageSplit(
PageBulk* page_bulk,
PageBulk* next_page_bulk)
{
ut_ad(page_bulk->getPageZip() != NULL);
if (page_bulk->getRecNo() <= 1) {
return(DB_TOO_BIG_RECORD);
}
/* Initialize a new page */
PageBulk new_page_bulk(m_index, m_trx->id, FIL_NULL,
page_bulk->getLevel());
dberr_t err = new_page_bulk.init();
if (err != DB_SUCCESS) {
return(err);
}
/* Copy the upper half to the new page. */
rec_t* split_rec = page_bulk->getSplitRec();
new_page_bulk.copyIn(split_rec);
page_bulk->copyOut(split_rec);
/* Commit the pages after split. */
err = pageCommit(page_bulk, &new_page_bulk, true);
if (err != DB_SUCCESS) {
pageAbort(&new_page_bulk);
return(err);
}
err = pageCommit(&new_page_bulk, next_page_bulk, true);
if (err != DB_SUCCESS) {
pageAbort(&new_page_bulk);
return(err);
}
return(err);
}
/** Commit(finish) a page. We set next/prev page no, compress a page of
compressed table and split the page if compression fails, insert a node
pointer to father page if needed, and commit mini-transaction.
@param[in] page_bulk page to commit
@param[in] next_page_bulk next page
@param[in] insert_father false when page_bulk is a root page and
true when it's a non-root page
@return error code */
dberr_t
BtrBulk::pageCommit(
PageBulk* page_bulk,
PageBulk* next_page_bulk,
bool insert_father)
{
page_bulk->finish();
/* Set page links */
if (next_page_bulk != NULL) {
ut_ad(page_bulk->getLevel() == next_page_bulk->getLevel());
page_bulk->setNext(next_page_bulk->getPageNo());
next_page_bulk->setPrev(page_bulk->getPageNo());
} else {
ut_ad(!page_has_next(page_bulk->getPage()));
/* If a page is released and latched again, we need to
mark it modified in mini-transaction. */
page_bulk->set_modified();
}
ut_ad(!m_index->lock.have_any());
/* Compress page if it's a compressed table. */
if (page_bulk->getPageZip() != NULL && !page_bulk->compress()) {
return(pageSplit(page_bulk, next_page_bulk));
}
/* Insert node pointer to father page. */
if (insert_father) {
dtuple_t* node_ptr = page_bulk->getNodePtr();
dberr_t err = insert(node_ptr, page_bulk->getLevel()+1);
if (err != DB_SUCCESS) {
return(err);
}
}
/* Commit mtr. */
page_bulk->commit(true);
return(DB_SUCCESS);
}
/** Log free check */
inline void BtrBulk::logFreeCheck()
{
if (log_sys.check_flush_or_checkpoint()) {
release();
log_check_margins();
latch();
}
}
/** Release all latches */
void
BtrBulk::release()
{
ut_ad(m_root_level + 1 == m_page_bulks.size());
for (ulint level = 0; level <= m_root_level; level++) {
PageBulk* page_bulk = m_page_bulks.at(level);
page_bulk->release();
}
}
/** Re-latch all latches */
void
BtrBulk::latch()
{
ut_ad(m_root_level + 1 == m_page_bulks.size());
for (ulint level = 0; level <= m_root_level; level++) {
PageBulk* page_bulk = m_page_bulks.at(level);
page_bulk->latch();
}
}
/** Insert a tuple to page in a level
@param[in] tuple tuple to insert
@param[in] level B-tree level
@return error code */
dberr_t
BtrBulk::insert(
dtuple_t* tuple,
ulint level)
{
bool is_left_most = false;
dberr_t err = DB_SUCCESS;
/* Check if we need to create a PageBulk for the level. */
if (level + 1 > m_page_bulks.size()) {
PageBulk* new_page_bulk
= UT_NEW_NOKEY(PageBulk(m_index, m_trx->id, FIL_NULL,
level));
err = new_page_bulk->init();
if (err != DB_SUCCESS) {
UT_DELETE(new_page_bulk);
return(err);
}
m_page_bulks.push_back(new_page_bulk);
ut_ad(level + 1 == m_page_bulks.size());
m_root_level = level;
is_left_most = true;
}
ut_ad(m_page_bulks.size() > level);
PageBulk* page_bulk = m_page_bulks.at(level);
if (is_left_most && level > 0 && page_bulk->getRecNo() == 0) {
/* The node pointer must be marked as the predefined minimum
record, as there is no lower alphabetical limit to records in
the leftmost node of a level: */
dtuple_set_info_bits(tuple, dtuple_get_info_bits(tuple)
| REC_INFO_MIN_REC_FLAG);
}
ulint n_ext = 0;
ulint rec_size = rec_get_converted_size(m_index, tuple, n_ext);
big_rec_t* big_rec = NULL;
rec_t* rec = NULL;
rec_offs* offsets = NULL;
if (page_bulk->needExt(tuple, rec_size)) {
/* The record is so big that we have to store some fields
externally on separate database pages */
big_rec = dtuple_convert_big_rec(m_index, 0, tuple, &n_ext);
if (big_rec == NULL) {
return(DB_TOO_BIG_RECORD);
}
rec_size = rec_get_converted_size(m_index, tuple, n_ext);
}
if (page_bulk->getPageZip() != NULL
&& page_zip_is_too_big(m_index, tuple)) {
err = DB_TOO_BIG_RECORD;
goto func_exit;
}
if (!page_bulk->isSpaceAvailable(rec_size)) {
/* Create a sibling page_bulk. */
PageBulk* sibling_page_bulk;
sibling_page_bulk = UT_NEW_NOKEY(PageBulk(m_index, m_trx->id,
FIL_NULL, level));
err = sibling_page_bulk->init();
if (err != DB_SUCCESS) {
UT_DELETE(sibling_page_bulk);
goto func_exit;
}
/* Commit page bulk. */
err = pageCommit(page_bulk, sibling_page_bulk, true);
if (err != DB_SUCCESS) {
pageAbort(sibling_page_bulk);
UT_DELETE(sibling_page_bulk);
goto func_exit;
}
/* Set new page bulk to page_bulks. */
ut_ad(sibling_page_bulk->getLevel() <= m_root_level);
m_page_bulks.at(level) = sibling_page_bulk;
UT_DELETE(page_bulk);
page_bulk = sibling_page_bulk;
/* Important: log_free_check whether we need a checkpoint. */
if (page_is_leaf(sibling_page_bulk->getPage())) {
if (trx_is_interrupted(m_trx)) {
err = DB_INTERRUPTED;
goto func_exit;
}
srv_inc_activity_count();
logFreeCheck();
}
}
/* Convert tuple to rec. */
rec = rec_convert_dtuple_to_rec(static_cast<byte*>(mem_heap_alloc(
page_bulk->m_heap, rec_size)), m_index, tuple, n_ext);
offsets = rec_get_offsets(rec, m_index, offsets, level
? 0 : m_index->n_core_fields,
ULINT_UNDEFINED, &page_bulk->m_heap);
page_bulk->insert(rec, offsets);
if (big_rec != NULL) {
ut_ad(dict_index_is_clust(m_index));
ut_ad(page_bulk->getLevel() == 0);
ut_ad(page_bulk == m_page_bulks.at(0));
/* Release all pages above the leaf level */
for (ulint level = 1; level <= m_root_level; level++) {
m_page_bulks.at(level)->release();
}
err = page_bulk->storeExt(big_rec, offsets);
/* Latch */
for (ulint level = 1; level <= m_root_level; level++) {
PageBulk* page_bulk = m_page_bulks.at(level);
page_bulk->latch();
}
}
func_exit:
if (big_rec != NULL) {
dtuple_convert_back_big_rec(m_index, tuple, big_rec);
}
return(err);
}
/** Btree bulk load finish. We commit the last page in each level
and copy the last page in top level to the root page of the index
if no error occurs.
@param[in] err whether bulk load was successful until now
@return error code */
dberr_t
BtrBulk::finish(dberr_t err)
{
uint32_t last_page_no = FIL_NULL;
ut_ad(!m_index->table->is_temporary());
if (m_page_bulks.size() == 0) {
/* The table is empty. The root page of the index tree
is already in a consistent state. No need to flush. */
return(err);
}
ut_ad(m_root_level + 1 == m_page_bulks.size());
/* Finish all page bulks */
for (ulint level = 0; level <= m_root_level; level++) {
PageBulk* page_bulk = m_page_bulks.at(level);
last_page_no = page_bulk->getPageNo();
if (err == DB_SUCCESS) {
err = pageCommit(page_bulk, NULL,
level != m_root_level);
}
if (err != DB_SUCCESS) {
pageAbort(page_bulk);
}
UT_DELETE(page_bulk);
}
if (err == DB_SUCCESS) {
rec_t* first_rec;
mtr_t mtr;
buf_block_t* last_block;
PageBulk root_page_bulk(m_index, m_trx->id,
m_index->page, m_root_level);
mtr.start();
m_index->set_modified(mtr);
mtr_x_lock_index(m_index, &mtr);
ut_ad(last_page_no != FIL_NULL);
last_block = btr_block_get(*m_index, last_page_no, RW_X_LATCH,
false, &mtr);
if (!last_block) {
err = DB_CORRUPTION;
err_exit:
mtr.commit();
return err;
}
first_rec = page_rec_get_next(
page_get_infimum_rec(last_block->page.frame));
/* Because this index tree is being created by this thread,
we assume that it cannot be corrupted. */
ut_ad(first_rec);
ut_ad(page_rec_is_user_rec(first_rec));
/* Copy last page to root page. */
err = root_page_bulk.init();
if (err != DB_SUCCESS) {
goto err_exit;
}
root_page_bulk.copyIn(first_rec);
root_page_bulk.finish();
/* Remove last page. */
err = btr_page_free(m_index, last_block, &mtr);
mtr.commit();
if (dberr_t e = pageCommit(&root_page_bulk, NULL, false)) {
err = e;
}
ut_ad(err == DB_SUCCESS);
}
ut_ad(err != DB_SUCCESS
|| btr_validate_index(m_index, NULL) == DB_SUCCESS);
return(err);
}
|