summaryrefslogtreecommitdiff
path: root/sql/mysqld.cc
blob: 306d924b625a4e7bc005cc9cf4aabd57e8bd9c57 (plain)
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
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
/* Copyright (c) 2000, 2015, Oracle and/or its affiliates.
   Copyright (c) 2008, 2021, MariaDB

   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 */

#include "sql_plugin.h"                         // Includes mariadb.h
#include "sql_priv.h"
#include "unireg.h"
#include <signal.h>
#ifndef __WIN__
#include <netdb.h>        // getservbyname, servent
#endif
#include "sql_parse.h"    // path_starts_from_data_home_dir
#include "sql_cache.h"    // query_cache, query_cache_*
#include "sql_locale.h"   // MY_LOCALES, my_locales, my_locale_by_name
#include "sql_show.h"     // free_status_vars, add_status_vars,
                          // reset_status_vars
#include "strfunc.h"      // find_set_from_flags
#include "parse_file.h"   // File_parser_dummy_hook
#include "sql_db.h"       // my_dboptions_cache_free
                          // my_dboptions_cache_init
#include "sql_table.h"    // release_ddl_log, execute_ddl_log_recovery
#include "sql_connect.h"  // free_max_user_conn, init_max_user_conn,
                          // handle_one_connection
#include "thread_cache.h"
#include "sql_time.h"     // known_date_time_formats,
                          // get_date_time_format_str,
                          // date_time_format_make
#include "tztime.h"       // my_tz_free, my_tz_init, my_tz_SYSTEM
#include "hostname.h"     // hostname_cache_free, hostname_cache_init
#include "sql_acl.h"      // acl_free, grant_free, acl_init,
                          // grant_init
#include "sql_base.h"
#include "sql_test.h"     // mysql_print_status
#include "item_create.h"  // item_create_cleanup, item_create_init
#include "sql_servers.h"  // servers_free, servers_init
#include "init.h"         // unireg_init
#include "derror.h"       // init_errmessage
#include "des_key_file.h" // load_des_key_file
#include "sql_manager.h"  // stop_handle_manager, start_handle_manager
#include "sql_expression_cache.h" // subquery_cache_miss, subquery_cache_hit
#include "sys_vars_shared.h"

#include <m_ctype.h>
#include <my_dir.h>
#include <my_bit.h>
#include "my_cpu.h"
#include "slave.h"
#include "rpl_mi.h"
#include "sql_repl.h"
#include "rpl_filter.h"
#include "client_settings.h"
#include "repl_failsafe.h"
#include <sql_common.h>
#include <my_stacktrace.h>
#include "mysqld_suffix.h"
#include "mysys_err.h"
#include "events.h"
#include "sql_audit.h"
#include "probes_mysql.h"
#include "scheduler.h"
#include <waiting_threads.h>
#include "debug_sync.h"
#include "wsrep_mysqld.h"
#include "wsrep_var.h"
#ifdef WITH_WSREP
#include "wsrep_thd.h"
#include "wsrep_sst.h"
#endif /* WITH_WSREP */
#include "proxy_protocol.h"

#include "sql_callback.h"
#include "threadpool.h"

#ifdef HAVE_OPENSSL
#include <ssl_compat.h>
#endif

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
#include "../storage/perfschema/pfs_server.h"
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */
#include <mysql/psi/mysql_idle.h>
#include <mysql/psi/mysql_socket.h>
#include <mysql/psi/mysql_statement.h>
#include "mysql_com_server.h"

#include "keycaches.h"
#include "../storage/myisam/ha_myisam.h"
#include "set_var.h"

#include "rpl_injector.h"
#include "semisync_master.h"
#include "semisync_slave.h"

#include "transaction.h"

#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif

#include <thr_alarm.h>
#include <ft_global.h>
#include <errmsg.h>
#include "sp_rcontext.h"
#include "sp_cache.h"
#include "sql_reload.h"  // reload_acl_and_cache
#include "sp_head.h"  // init_sp_psi_keys

#ifdef HAVE_POLL_H
#include <poll.h>
#endif

#ifdef _WIN32
#include <handle_connections_win.h>
#endif

#include <my_service_manager.h>

#define mysqld_charset &my_charset_latin1

/* We have HAVE_valgrind below as this speeds up the shutdown of MySQL */

#if defined(HAVE_valgrind) && defined(__linux__)
#define HAVE_CLOSE_SERVER_SOCK 1
#endif

extern "C" {					// Because of SCO 3.2V4.2
#include <sys/stat.h>
#ifndef __GNU_LIBRARY__
#define __GNU_LIBRARY__				// Skip warnings in getopt.h
#endif
#include <my_getopt.h>
#ifdef HAVE_SYSENT_H
#include <sysent.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>				// For struct passwd
#endif
#include <my_net.h>

#if !defined(__WIN__)
#include <sys/resource.h>
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_SELECT_H
#include <select.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <sys/utsname.h>
#endif /* __WIN__ */

#include <my_libwrap.h>

#ifdef __WIN__ 
#include <crtdbg.h>
#endif

#ifdef _AIX41
int initgroups(const char *,unsigned int);
#endif

#if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H) && !defined(HAVE_FEDISABLEEXCEPT)
#include <ieeefp.h>
#ifdef HAVE_FP_EXCEPT				// Fix type conflict
typedef fp_except fp_except_t;
#endif
#endif /* __FreeBSD__ && HAVE_IEEEFP_H && !HAVE_FEDISABLEEXCEPT */
#ifdef HAVE_SYS_FPU_H
/* for IRIX to use set_fpc_csr() */
#include <sys/fpu.h>
#endif
#ifdef HAVE_FPU_CONTROL_H
#include <fpu_control.h>
#endif
#if defined(__i386__) && !defined(HAVE_FPU_CONTROL_H)
# define fpu_control_t unsigned int
# define _FPU_EXTENDED 0x300
# define _FPU_DOUBLE 0x200
# if defined(__GNUC__) || (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x590)
#  define _FPU_GETCW(cw) asm volatile ("fnstcw %0" : "=m" (*&cw))
#  define _FPU_SETCW(cw) asm volatile ("fldcw %0" : : "m" (*&cw))
# else
#  define _FPU_GETCW(cw) (cw= 0)
#  define _FPU_SETCW(cw)
# endif
#endif

#ifndef HAVE_FCNTL
#define fcntl(X,Y,Z) 0
#endif

inline void setup_fpu()
{
#if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H) && !defined(HAVE_FEDISABLEEXCEPT)
  /* We can't handle floating point exceptions with threads, so disable
     this on freebsd
     Don't fall for overflow, underflow,divide-by-zero or loss of precision.
     fpsetmask() is deprecated in favor of fedisableexcept() in C99.
  */
#if defined(FP_X_DNML)
  fpsetmask(~(FP_X_INV | FP_X_DNML | FP_X_OFL | FP_X_UFL | FP_X_DZ |
	      FP_X_IMP));
#else
  fpsetmask(~(FP_X_INV |             FP_X_OFL | FP_X_UFL | FP_X_DZ |
              FP_X_IMP));
#endif /* FP_X_DNML */
#endif /* __FreeBSD__ && HAVE_IEEEFP_H && !HAVE_FEDISABLEEXCEPT */

#ifdef HAVE_FEDISABLEEXCEPT
  fedisableexcept(FE_ALL_EXCEPT);
#endif

#ifdef HAVE_FESETROUND
    /* Set FPU rounding mode to "round-to-nearest" */
  fesetround(FE_TONEAREST);
#endif /* HAVE_FESETROUND */

  /*
    x86 (32-bit) requires FPU precision to be explicitly set to 64 bit
    (double precision) for portable results of floating point operations.
    However, there is no need to do so if compiler is using SSE2 for floating
    point, double values will be stored and processed in 64 bits anyway.
  */
#if defined(__i386__) && !defined(__SSE2_MATH__)
#if defined(_WIN32)
#if !defined(_WIN64)
  _control87(_PC_53, MCW_PC);
#endif /* !_WIN64 */
#else /* !_WIN32 */
  fpu_control_t cw;
  _FPU_GETCW(cw);
  cw= (cw & ~_FPU_EXTENDED) | _FPU_DOUBLE;
  _FPU_SETCW(cw);
#endif /* _WIN32 && */
#endif /* __i386__ */

#if defined(__sgi) && defined(HAVE_SYS_FPU_H)
  /* Enable denormalized DOUBLE values support for IRIX */
  union fpc_csr n;
  n.fc_word = get_fpc_csr();
  n.fc_struct.flush = 0;
  set_fpc_csr(n.fc_word);
#endif
}

} /* cplusplus */

#define MYSQL_KILL_SIGNAL SIGTERM

#include <my_pthread.h>			// For thr_setconcurency()

#ifdef SOLARIS
extern "C" int gethostname(char *name, int namelen);
#endif

extern "C" sig_handler handle_fatal_signal(int sig);

#if defined(__linux__)
#define ENABLE_TEMP_POOL 1
#else
#define ENABLE_TEMP_POOL 0
#endif

int init_io_cache_encryption();

/* Constants */

#include <welcome_copyright_notice.h> // ORACLE_WELCOME_COPYRIGHT_NOTICE

const char *show_comp_option_name[]= {"YES", "NO", "DISABLED"};

static const char *tc_heuristic_recover_names[]=
{
  "OFF", "COMMIT", "ROLLBACK", NullS
};
static TYPELIB tc_heuristic_recover_typelib=
{
  array_elements(tc_heuristic_recover_names)-1,"",
  tc_heuristic_recover_names, NULL
};

const char *first_keyword= "first";
const char *my_localhost= "localhost", *delayed_user= "DELAYED";

bool opt_large_files= sizeof(my_off_t) > 4;
static my_bool opt_autocommit; ///< for --autocommit command-line option

/*
  Used with --help for detailed option
*/
static my_bool opt_verbose= 0;

/* Timer info to be used by the SQL layer */
MY_TIMER_INFO sys_timer_info;

/* static variables */

#ifdef HAVE_PSI_INTERFACE
#ifdef HAVE_OPENSSL10
static PSI_rwlock_key key_rwlock_openssl;
#endif
#endif /* HAVE_PSI_INTERFACE */

/**
  Statement instrumentation key for replication.
*/
#ifdef HAVE_PSI_STATEMENT_INTERFACE
PSI_statement_info stmt_info_rpl;
#endif

/* the default log output is log tables */
static bool lower_case_table_names_used= 0;
static bool volatile select_thread_in_use, signal_thread_in_use;
static my_bool opt_debugging= 0, opt_external_locking= 0, opt_console= 0;
static my_bool opt_short_log_format= 0, opt_silent_startup= 0;

ulong max_used_connections;
static const char *mysqld_user, *mysqld_chroot;
static char *default_character_set_name;
static char *character_set_filesystem_name;
static char *lc_messages;
static char *lc_time_names_name;
char *my_bind_addr_str;
int server_socket_ai_family;
static char *default_collation_name;
char *default_storage_engine, *default_tmp_storage_engine;
char *enforced_storage_engine=NULL;
char *gtid_pos_auto_engines;
plugin_ref *opt_gtid_pos_auto_plugins;
static char compiled_default_collation_name[]= MYSQL_DEFAULT_COLLATION_NAME;
Thread_cache thread_cache;
static bool binlog_format_used= false;
LEX_STRING opt_init_connect, opt_init_slave;
static DYNAMIC_ARRAY all_options;
static longlong start_memory_used;

/* Global variables */

bool opt_bin_log, opt_bin_log_used=0, opt_ignore_builtin_innodb= 0;
bool opt_bin_log_compress;
uint opt_bin_log_compress_min_len;
my_bool opt_log, debug_assert_if_crashed_table= 0, opt_help= 0;
my_bool debug_assert_on_not_freed_memory= 0;
my_bool disable_log_notes, opt_support_flashback= 0;
static my_bool opt_abort;
ulonglong log_output_options;
my_bool opt_userstat_running;
bool opt_error_log= IF_WIN(1,0);
bool opt_disable_networking=0, opt_skip_show_db=0;
bool opt_skip_name_resolve=0;
my_bool opt_character_set_client_handshake= 1;
bool opt_endinfo, using_udf_functions;
my_bool locked_in_memory;
bool opt_using_transactions;
bool volatile abort_loop;
uint volatile global_disable_checkpoint;
#if defined(_WIN32) && !defined(EMBEDDED_LIBRARY)
ulong slow_start_timeout;
#endif
static MEM_ROOT startup_root;

/**
   @brief 'grant_option' is used to indicate if privileges needs
   to be checked, in which case the lock, LOCK_grant, is used
   to protect access to the grant table.
   @note This flag is dropped in 5.1
   @see grant_init()
 */
bool volatile grant_option;

my_bool opt_skip_slave_start = 0; ///< If set, slave is not autostarted
my_bool opt_reckless_slave = 0;
my_bool opt_enable_named_pipe= 0;
my_bool opt_local_infile, opt_slave_compressed_protocol;
my_bool opt_safe_user_create = 0;
my_bool opt_show_slave_auth_info;
my_bool opt_log_slave_updates= 0;
my_bool opt_replicate_annotate_row_events= 0;
my_bool opt_mysql56_temporal_format=0, strict_password_validation= 1;
my_bool opt_explicit_defaults_for_timestamp= 0;
char *opt_slave_skip_errors;
char *opt_slave_transaction_retry_errors;

/*
  Legacy global handlerton. These will be removed (please do not add more).
*/
handlerton *heap_hton;
handlerton *myisam_hton;
handlerton *partition_hton;

my_bool read_only= 0, opt_readonly= 0;
my_bool use_temp_pool, relay_log_purge;
my_bool relay_log_recovery;
my_bool opt_sync_frm, opt_allow_suspicious_udfs;
my_bool opt_secure_auth= 0;
my_bool opt_require_secure_transport= 0;
char* opt_secure_file_priv;
my_bool lower_case_file_system= 0;
my_bool opt_large_pages= 0;
my_bool opt_super_large_pages= 0;
my_bool opt_myisam_use_mmap= 0;
uint   opt_large_page_size= 0;
#if defined(ENABLED_DEBUG_SYNC)
MYSQL_PLUGIN_IMPORT uint    opt_debug_sync_timeout= 0;
#endif /* defined(ENABLED_DEBUG_SYNC) */
my_bool opt_old_style_user_limits= 0, trust_function_creators= 0;
ulong opt_replicate_events_marked_for_skip;

/*
  True if there is at least one per-hour limit for some user, so we should
  check them before each query (and possibly reset counters when hour is
  changed). False otherwise.
*/
volatile bool mqh_used = 0;
my_bool opt_noacl;
my_bool sp_automatic_privileges= 1;

ulong opt_binlog_rows_event_max_size;
ulong binlog_row_metadata;
my_bool opt_master_verify_checksum= 0;
my_bool opt_slave_sql_verify_checksum= 1;
const char *binlog_format_names[]= {"MIXED", "STATEMENT", "ROW", NullS};
volatile sig_atomic_t calling_initgroups= 0; /**< Used in SIGSEGV handler. */
uint mysqld_port, select_errors, dropping_tables, ha_open_options;
uint mysqld_extra_port;
uint mysqld_port_timeout;
ulong delay_key_write_options;
uint protocol_version;
uint lower_case_table_names;
ulong tc_heuristic_recover= 0;
Atomic_counter<uint32_t> thread_count;
bool shutdown_wait_for_slaves;
Atomic_counter<uint32_t> slave_open_temp_tables;
ulong thread_created;
ulong back_log, connect_timeout, server_id;
ulong what_to_log;
ulong slow_launch_time;
ulong open_files_limit, max_binlog_size;
ulong slave_trans_retries;
ulong slave_trans_retry_interval;
uint  slave_net_timeout;
ulong slave_exec_mode_options;
ulong slave_run_triggers_for_rbr= 0;
ulong slave_ddl_exec_mode_options= SLAVE_EXEC_MODE_IDEMPOTENT;
ulonglong slave_type_conversions_options;
ulong thread_cache_size=0;
ulonglong binlog_cache_size=0;
ulonglong binlog_file_cache_size=0;
ulonglong max_binlog_cache_size=0;
ulong slave_max_allowed_packet= 0;
ulonglong binlog_stmt_cache_size=0;
ulonglong  max_binlog_stmt_cache_size=0;
ulonglong test_flags;
ulonglong query_cache_size=0;
ulong query_cache_limit=0;
ulong executed_events=0;
Atomic_counter<query_id_t> global_query_id;
ulong aborted_threads, aborted_connects, aborted_connects_preauth;
ulong delayed_insert_timeout, delayed_insert_limit, delayed_queue_size;
ulong delayed_insert_threads, delayed_insert_writes, delayed_rows_in_use;
ulong delayed_insert_errors,flush_time;
ulong specialflag=0;
ulong binlog_cache_use= 0, binlog_cache_disk_use= 0;
ulong binlog_stmt_cache_use= 0, binlog_stmt_cache_disk_use= 0;
ulong max_connections, max_connect_errors;
uint max_password_errors;
ulong extra_max_connections;
uint max_digest_length= 0;
ulong slave_retried_transactions;
ulong transactions_multi_engine;
ulong rpl_transactions_multi_engine;
ulong transactions_gtid_foreign_engine;
ulonglong slave_skipped_errors;
ulong feature_files_opened_with_delayed_keys= 0, feature_check_constraint= 0;
ulonglong denied_connections;
my_decimal decimal_zero;
long opt_secure_timestamp;
uint default_password_lifetime;
my_bool disconnect_on_expired_password;

bool max_user_connections_checking=0;
/**
  Limit of the total number of prepared statements in the server.
  Is necessary to protect the server against out-of-memory attacks.
*/
uint max_prepared_stmt_count;
/**
  Current total number of prepared statements in the server. This number
  is exact, and therefore may not be equal to the difference between
  `com_stmt_prepare' and `com_stmt_close' (global status variables), as
  the latter ones account for all registered attempts to prepare
  a statement (including unsuccessful ones).  Prepared statements are
  currently connection-local: if the same SQL query text is prepared in
  two different connections, this counts as two distinct prepared
  statements.
*/
uint prepared_stmt_count=0;
my_thread_id global_thread_id= 0;
ulong current_pid;
ulong slow_launch_threads = 0;
uint sync_binlog_period= 0, sync_relaylog_period= 0,
     sync_relayloginfo_period= 0, sync_masterinfo_period= 0;
ulong expire_logs_days = 0;
/**
  Soft upper limit for number of sp_head objects that can be stored
  in the sp_cache for one connection.
*/
ulong stored_program_cache_size= 0;

ulong opt_slave_parallel_threads= 0;
ulong opt_slave_domain_parallel_threads= 0;
ulong opt_slave_parallel_mode;
ulong opt_binlog_commit_wait_count= 0;
ulong opt_binlog_commit_wait_usec= 0;
ulong opt_slave_parallel_max_queued= 131072;
my_bool opt_gtid_ignore_duplicates= FALSE;
uint opt_gtid_cleanup_batch_size= 64;

const double log_10[] = {
  1e000, 1e001, 1e002, 1e003, 1e004, 1e005, 1e006, 1e007, 1e008, 1e009,
  1e010, 1e011, 1e012, 1e013, 1e014, 1e015, 1e016, 1e017, 1e018, 1e019,
  1e020, 1e021, 1e022, 1e023, 1e024, 1e025, 1e026, 1e027, 1e028, 1e029,
  1e030, 1e031, 1e032, 1e033, 1e034, 1e035, 1e036, 1e037, 1e038, 1e039,
  1e040, 1e041, 1e042, 1e043, 1e044, 1e045, 1e046, 1e047, 1e048, 1e049,
  1e050, 1e051, 1e052, 1e053, 1e054, 1e055, 1e056, 1e057, 1e058, 1e059,
  1e060, 1e061, 1e062, 1e063, 1e064, 1e065, 1e066, 1e067, 1e068, 1e069,
  1e070, 1e071, 1e072, 1e073, 1e074, 1e075, 1e076, 1e077, 1e078, 1e079,
  1e080, 1e081, 1e082, 1e083, 1e084, 1e085, 1e086, 1e087, 1e088, 1e089,
  1e090, 1e091, 1e092, 1e093, 1e094, 1e095, 1e096, 1e097, 1e098, 1e099,
  1e100, 1e101, 1e102, 1e103, 1e104, 1e105, 1e106, 1e107, 1e108, 1e109,
  1e110, 1e111, 1e112, 1e113, 1e114, 1e115, 1e116, 1e117, 1e118, 1e119,
  1e120, 1e121, 1e122, 1e123, 1e124, 1e125, 1e126, 1e127, 1e128, 1e129,
  1e130, 1e131, 1e132, 1e133, 1e134, 1e135, 1e136, 1e137, 1e138, 1e139,
  1e140, 1e141, 1e142, 1e143, 1e144, 1e145, 1e146, 1e147, 1e148, 1e149,
  1e150, 1e151, 1e152, 1e153, 1e154, 1e155, 1e156, 1e157, 1e158, 1e159,
  1e160, 1e161, 1e162, 1e163, 1e164, 1e165, 1e166, 1e167, 1e168, 1e169,
  1e170, 1e171, 1e172, 1e173, 1e174, 1e175, 1e176, 1e177, 1e178, 1e179,
  1e180, 1e181, 1e182, 1e183, 1e184, 1e185, 1e186, 1e187, 1e188, 1e189,
  1e190, 1e191, 1e192, 1e193, 1e194, 1e195, 1e196, 1e197, 1e198, 1e199,
  1e200, 1e201, 1e202, 1e203, 1e204, 1e205, 1e206, 1e207, 1e208, 1e209,
  1e210, 1e211, 1e212, 1e213, 1e214, 1e215, 1e216, 1e217, 1e218, 1e219,
  1e220, 1e221, 1e222, 1e223, 1e224, 1e225, 1e226, 1e227, 1e228, 1e229,
  1e230, 1e231, 1e232, 1e233, 1e234, 1e235, 1e236, 1e237, 1e238, 1e239,
  1e240, 1e241, 1e242, 1e243, 1e244, 1e245, 1e246, 1e247, 1e248, 1e249,
  1e250, 1e251, 1e252, 1e253, 1e254, 1e255, 1e256, 1e257, 1e258, 1e259,
  1e260, 1e261, 1e262, 1e263, 1e264, 1e265, 1e266, 1e267, 1e268, 1e269,
  1e270, 1e271, 1e272, 1e273, 1e274, 1e275, 1e276, 1e277, 1e278, 1e279,
  1e280, 1e281, 1e282, 1e283, 1e284, 1e285, 1e286, 1e287, 1e288, 1e289,
  1e290, 1e291, 1e292, 1e293, 1e294, 1e295, 1e296, 1e297, 1e298, 1e299,
  1e300, 1e301, 1e302, 1e303, 1e304, 1e305, 1e306, 1e307, 1e308
};

time_t server_start_time, flush_status_time;

char mysql_home[FN_REFLEN], pidfile_name[FN_REFLEN], system_time_zone[30];
char *default_tz_name;
char log_error_file[FN_REFLEN], glob_hostname[FN_REFLEN], *opt_log_basename;
char mysql_real_data_home[FN_REFLEN],
     lc_messages_dir[FN_REFLEN], reg_ext[FN_EXTLEN],
     mysql_charsets_dir[FN_REFLEN],
     *opt_init_file, *opt_tc_log_file;
char *lc_messages_dir_ptr= lc_messages_dir, *log_error_file_ptr;
char mysql_unpacked_real_data_home[FN_REFLEN];
size_t mysql_unpacked_real_data_home_len;
uint mysql_real_data_home_len, mysql_data_home_len= 1;
uint reg_ext_length;
const key_map key_map_empty(0);
key_map key_map_full(0);                        // Will be initialized later

DATE_TIME_FORMAT global_date_format, global_datetime_format, global_time_format;
Time_zone *default_tz;

const char *mysql_real_data_home_ptr= mysql_real_data_home;
extern "C" {
char server_version[SERVER_VERSION_LENGTH];
}
char *server_version_ptr;
bool using_custom_server_version= false;
char *mysqld_unix_port, *opt_mysql_tmpdir;
ulong thread_handling;

my_bool encrypt_binlog;
my_bool encrypt_tmp_disk_tables, encrypt_tmp_files;

/** name of reference on left expression in rewritten IN subquery */
const LEX_CSTRING in_left_expr_name= {STRING_WITH_LEN("<left expr>") };
/** name of additional condition */
const LEX_CSTRING in_having_cond= {STRING_WITH_LEN("<IN HAVING>") };
const LEX_CSTRING in_additional_cond= {STRING_WITH_LEN("<IN COND>") };

/** Number of connection errors when selecting on the listening port */
ulong connection_errors_select= 0;
/** Number of connection errors when accepting sockets in the listening port. */
ulong connection_errors_accept= 0;
/** Number of connection errors from TCP wrappers. */
ulong connection_errors_tcpwrap= 0;
/** Number of connection errors from internal server errors. */
ulong connection_errors_internal= 0;
/** Number of connection errors from the server max_connection limit. */
ulong connection_errors_max_connection= 0;
/** Number of errors when reading the peer address. */
ulong connection_errors_peer_addr= 0;

/* classes for comparation parsing/processing */
Eq_creator eq_creator;
Ne_creator ne_creator;
Gt_creator gt_creator;
Lt_creator lt_creator;
Ge_creator ge_creator;
Le_creator le_creator;

THD_list server_threads;
Rpl_filter* cur_rpl_filter;
Rpl_filter* global_rpl_filter;
Rpl_filter* binlog_filter;

struct system_variables global_system_variables;
/**
  Following is just for options parsing, used with a difference against
  global_system_variables.

  TODO: something should be done to get rid of following variables
*/
const char *current_dbug_option="";

struct system_variables max_system_variables;
struct system_status_var global_status_var;

MY_TMPDIR mysql_tmpdir_list;
MY_BITMAP temp_pool;

CHARSET_INFO *system_charset_info, *files_charset_info ;
CHARSET_INFO *national_charset_info, *table_alias_charset;
CHARSET_INFO *character_set_filesystem;
CHARSET_INFO *error_message_charset_info;

MY_LOCALE *my_default_lc_messages;
MY_LOCALE *my_default_lc_time_names;

SHOW_COMP_OPTION have_ssl, have_symlink, have_dlopen, have_query_cache;
SHOW_COMP_OPTION have_geometry, have_rtree_keys;
SHOW_COMP_OPTION have_crypt, have_compress;
SHOW_COMP_OPTION have_profiling;
SHOW_COMP_OPTION have_openssl;

#ifndef EMBEDDED_LIBRARY
static std::atomic<char*> shutdown_user;
#endif //EMBEDDED_LIBRARY

/* Thread specific variables */

static thread_local THD *THR_THD;

MYSQL_THD _current_thd() { return THR_THD; }
void set_current_thd(THD *thd) { THR_THD= thd; }

/*
  LOCK_start_thread is used to syncronize thread start and stop with
  other threads.

  It also protects these variables:
  select_thread_in_use
  slave_init_thread_running
  check_temp_dir() call
*/
mysql_mutex_t  LOCK_start_thread;

mysql_mutex_t
  LOCK_status, LOCK_error_log, LOCK_short_uuid_generator,
  LOCK_delayed_insert, LOCK_delayed_status, LOCK_delayed_create,
  LOCK_crypt,
  LOCK_global_system_variables,
  LOCK_user_conn,
  LOCK_error_messages;
mysql_mutex_t LOCK_stats, LOCK_global_user_client_stats,
              LOCK_global_table_stats, LOCK_global_index_stats;

/* This protects against changes in master_info_index */
mysql_mutex_t LOCK_active_mi;

/* This protects connection id.*/
mysql_mutex_t LOCK_thread_id;

/**
  The below lock protects access to two global server variables:
  max_prepared_stmt_count and prepared_stmt_count. These variables
  set the limit and hold the current total number of prepared statements
  in the server, respectively. As PREPARE/DEALLOCATE rate in a loaded
  server may be fairly high, we need a dedicated lock.
*/
mysql_mutex_t LOCK_prepared_stmt_count;
#ifdef HAVE_OPENSSL
mysql_mutex_t LOCK_des_key_file;
#endif
mysql_rwlock_t LOCK_grant, LOCK_sys_init_connect, LOCK_sys_init_slave;
mysql_rwlock_t LOCK_ssl_refresh;
mysql_rwlock_t LOCK_all_status_vars;
mysql_prlock_t LOCK_system_variables_hash;
mysql_cond_t COND_start_thread;
pthread_t signal_thread;
pthread_attr_t connection_attrib;
mysql_mutex_t LOCK_server_started;
mysql_cond_t COND_server_started;

int mysqld_server_started=0, mysqld_server_initialized= 0;
File_parser_dummy_hook file_parser_dummy_hook;

/* replication parameters, if master_host is not NULL, we are a slave */
uint report_port= 0;
ulong master_retry_count=0;
char *master_info_file;
char *relay_log_info_file, *report_user, *report_password, *report_host;
char *opt_relay_logname = 0, *opt_relaylog_index_name=0;
char *opt_logname, *opt_slow_logname, *opt_bin_logname;
char *opt_binlog_index_name=0;

/* Static variables */

my_bool opt_stack_trace;
my_bool opt_expect_abort= 0, opt_bootstrap= 0;
static my_bool opt_myisam_log;
static int cleanup_done;
static ulong opt_specialflag;
char *mysql_home_ptr, *pidfile_name_ptr;
/** Initial command line arguments (count), after load_defaults().*/
static int defaults_argc;
/**
  Initial command line arguments (arguments), after load_defaults().
  This memory is allocated by @c load_defaults() and should be freed
  using @c free_defaults().
  Do not modify defaults_argc / defaults_argv,
  use remaining_argc / remaining_argv instead to parse the command
  line arguments in multiple steps.
*/
static char **defaults_argv;
/** Remaining command line arguments (count), filtered by handle_options().*/
static int remaining_argc;
/** Remaining command line arguments (arguments), filtered by handle_options().*/
static char **remaining_argv;

int orig_argc;
char **orig_argv;

static struct my_option pfs_early_options[]=
{
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  {"performance_schema_instrument", OPT_PFS_INSTRUMENT,
    "Default startup value for a performance schema instrument.",
    &pfs_param.m_pfs_instrument, &pfs_param.m_pfs_instrument, 0, GET_STR,
    OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_stages_current", 0,
    "Default startup value for the events_stages_current consumer.",
    &pfs_param.m_consumer_events_stages_current_enabled,
    &pfs_param.m_consumer_events_stages_current_enabled, 0, GET_BOOL,
    OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_stages_history", 0,
    "Default startup value for the events_stages_history consumer.",
    &pfs_param.m_consumer_events_stages_history_enabled,
    &pfs_param.m_consumer_events_stages_history_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_stages_history_long", 0,
    "Default startup value for the events_stages_history_long consumer.",
    &pfs_param.m_consumer_events_stages_history_long_enabled,
    &pfs_param.m_consumer_events_stages_history_long_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_statements_current", 0,
    "Default startup value for the events_statements_current consumer.",
    &pfs_param.m_consumer_events_statements_current_enabled,
    &pfs_param.m_consumer_events_statements_current_enabled, 0, GET_BOOL,
    OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_statements_history", 0,
    "Default startup value for the events_statements_history consumer.",
    &pfs_param.m_consumer_events_statements_history_enabled,
    &pfs_param.m_consumer_events_statements_history_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_statements_history_long", 0,
    "Default startup value for the events_statements_history_long consumer.",
    &pfs_param.m_consumer_events_statements_history_long_enabled,
    &pfs_param.m_consumer_events_statements_history_long_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_transactions_current", 0,
    "Default startup value for the events_transactions_current consumer.",
    &pfs_param.m_consumer_events_transactions_current_enabled,
    &pfs_param.m_consumer_events_transactions_current_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_transactions_history", 0,
    "Default startup value for the events_transactions_history consumer.",
    &pfs_param.m_consumer_events_transactions_history_enabled,
    &pfs_param.m_consumer_events_transactions_history_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_transactions_history_long", 0,
    "Default startup value for the events_transactions_history_long consumer.",
    &pfs_param.m_consumer_events_transactions_history_long_enabled,
    &pfs_param.m_consumer_events_transactions_history_long_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_waits_current", 0,
    "Default startup value for the events_waits_current consumer.",
    &pfs_param.m_consumer_events_waits_current_enabled,
    &pfs_param.m_consumer_events_waits_current_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_waits_history", 0,
    "Default startup value for the events_waits_history consumer.",
    &pfs_param.m_consumer_events_waits_history_enabled,
    &pfs_param.m_consumer_events_waits_history_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_events_waits_history_long", 0,
    "Default startup value for the events_waits_history_long consumer.",
    &pfs_param.m_consumer_events_waits_history_long_enabled,
    &pfs_param.m_consumer_events_waits_history_long_enabled, 0,
    GET_BOOL, OPT_ARG, FALSE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_global_instrumentation", 0,
    "Default startup value for the global_instrumentation consumer.",
    &pfs_param.m_consumer_global_instrumentation_enabled,
    &pfs_param.m_consumer_global_instrumentation_enabled, 0,
    GET_BOOL, OPT_ARG, TRUE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_thread_instrumentation", 0,
    "Default startup value for the thread_instrumentation consumer.",
    &pfs_param.m_consumer_thread_instrumentation_enabled,
    &pfs_param.m_consumer_thread_instrumentation_enabled, 0,
    GET_BOOL, OPT_ARG, TRUE, 0, 0, 0, 0, 0},
  {"performance_schema_consumer_statements_digest", 0,
    "Default startup value for the statements_digest consumer.",
    &pfs_param.m_consumer_statement_digest_enabled,
    &pfs_param.m_consumer_statement_digest_enabled, 0,
    GET_BOOL, OPT_ARG, TRUE, 0, 0, 0, 0, 0},
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */
  {"getopt-prefix-matching", 0,
    "Recognize command-line options by their unambiguos prefixes.",
    &my_getopt_prefix_matching, &my_getopt_prefix_matching, 0, GET_BOOL,
    NO_ARG, 1, 0, 1, 0, 0, 0}
};

PSI_file_key key_file_binlog,  key_file_binlog_cache, key_file_binlog_index,
  key_file_binlog_index_cache, key_file_casetest,
  key_file_dbopt, key_file_des_key_file, key_file_ERRMSG, key_select_to_file,
  key_file_fileparser, key_file_frm, key_file_global_ddl_log, key_file_load,
  key_file_loadfile, key_file_log_event_data, key_file_log_event_info,
  key_file_master_info, key_file_misc, key_file_partition_ddl_log,
  key_file_pid, key_file_relay_log_info, key_file_send_file, key_file_tclog,
  key_file_trg, key_file_trn, key_file_init;
PSI_file_key key_file_query_log, key_file_slow_log;
PSI_file_key key_file_relaylog, key_file_relaylog_index,
             key_file_relaylog_cache, key_file_relaylog_index_cache;
PSI_file_key key_file_binlog_state;

#ifdef HAVE_PSI_INTERFACE
#ifdef HAVE_MMAP
PSI_mutex_key key_PAGE_lock, key_LOCK_sync, key_LOCK_active, key_LOCK_pool,
  key_LOCK_pending_checkpoint;
#endif /* HAVE_MMAP */

#ifdef HAVE_OPENSSL
PSI_mutex_key key_LOCK_des_key_file;
#endif /* HAVE_OPENSSL */

PSI_mutex_key key_BINLOG_LOCK_index, key_BINLOG_LOCK_xid_list,
  key_BINLOG_LOCK_binlog_background_thread,
  key_LOCK_binlog_end_pos,
  key_delayed_insert_mutex, key_hash_filo_lock, key_LOCK_active_mi,
  key_LOCK_crypt, key_LOCK_delayed_create,
  key_LOCK_delayed_insert, key_LOCK_delayed_status, key_LOCK_error_log,
  key_LOCK_gdl, key_LOCK_global_system_variables,
  key_LOCK_manager,
  key_LOCK_prepared_stmt_count,
  key_LOCK_rpl_status, key_LOCK_server_started,
  key_LOCK_status,
  key_LOCK_system_variables_hash, key_LOCK_thd_data, key_LOCK_thd_kill,
  key_LOCK_user_conn, key_LOCK_uuid_short_generator, key_LOG_LOCK_log,
  key_master_info_data_lock, key_master_info_run_lock,
  key_master_info_sleep_lock, key_master_info_start_stop_lock,
  key_mutex_slave_reporting_capability_err_lock, key_relay_log_info_data_lock,
  key_rpl_group_info_sleep_lock,
  key_relay_log_info_log_space_lock, key_relay_log_info_run_lock,
  key_structure_guard_mutex, key_TABLE_SHARE_LOCK_ha_data,
  key_LOCK_error_messages,
  key_LOCK_start_thread,
  key_PARTITION_LOCK_auto_inc;
PSI_mutex_key key_RELAYLOG_LOCK_index;
PSI_mutex_key key_LOCK_relaylog_end_pos;
PSI_mutex_key key_LOCK_thread_id;
PSI_mutex_key key_LOCK_slave_state, key_LOCK_binlog_state,
  key_LOCK_rpl_thread, key_LOCK_rpl_thread_pool, key_LOCK_parallel_entry;
PSI_mutex_key key_LOCK_rpl_semi_sync_master_enabled;
PSI_mutex_key key_LOCK_binlog;

PSI_mutex_key key_LOCK_stats,
  key_LOCK_global_user_client_stats, key_LOCK_global_table_stats,
  key_LOCK_global_index_stats,
  key_LOCK_wakeup_ready, key_LOCK_wait_commit;
PSI_mutex_key key_LOCK_gtid_waiting;

PSI_mutex_key key_LOCK_after_binlog_sync;
PSI_mutex_key key_LOCK_prepare_ordered, key_LOCK_commit_ordered;
PSI_mutex_key key_TABLE_SHARE_LOCK_share;
PSI_mutex_key key_LOCK_ack_receiver;

PSI_mutex_key key_TABLE_SHARE_LOCK_rotation;
PSI_cond_key key_TABLE_SHARE_COND_rotation;

static PSI_mutex_info all_server_mutexes[]=
{
#ifdef HAVE_MMAP
  { &key_PAGE_lock, "PAGE::lock", 0},
  { &key_LOCK_sync, "TC_LOG_MMAP::LOCK_sync", 0},
  { &key_LOCK_active, "TC_LOG_MMAP::LOCK_active", 0},
  { &key_LOCK_pool, "TC_LOG_MMAP::LOCK_pool", 0},
  { &key_LOCK_pool, "TC_LOG_MMAP::LOCK_pending_checkpoint", 0},
#endif /* HAVE_MMAP */

#ifdef HAVE_OPENSSL
  { &key_LOCK_des_key_file, "LOCK_des_key_file", PSI_FLAG_GLOBAL},
#endif /* HAVE_OPENSSL */

  { &key_BINLOG_LOCK_index, "MYSQL_BIN_LOG::LOCK_index", 0},
  { &key_BINLOG_LOCK_xid_list, "MYSQL_BIN_LOG::LOCK_xid_list", 0},
  { &key_BINLOG_LOCK_binlog_background_thread, "MYSQL_BIN_LOG::LOCK_binlog_background_thread", 0},
  { &key_LOCK_binlog_end_pos, "MYSQL_BIN_LOG::LOCK_binlog_end_pos", 0 },
  { &key_RELAYLOG_LOCK_index, "MYSQL_RELAY_LOG::LOCK_index", 0},
  { &key_LOCK_relaylog_end_pos, "MYSQL_RELAY_LOG::LOCK_binlog_end_pos", 0},
  { &key_delayed_insert_mutex, "Delayed_insert::mutex", 0},
  { &key_hash_filo_lock, "hash_filo::lock", 0},
  { &key_LOCK_active_mi, "LOCK_active_mi", PSI_FLAG_GLOBAL},
  { &key_LOCK_thread_id, "LOCK_thread_id", PSI_FLAG_GLOBAL},
  { &key_LOCK_crypt, "LOCK_crypt", PSI_FLAG_GLOBAL},
  { &key_LOCK_delayed_create, "LOCK_delayed_create", PSI_FLAG_GLOBAL},
  { &key_LOCK_delayed_insert, "LOCK_delayed_insert", PSI_FLAG_GLOBAL},
  { &key_LOCK_delayed_status, "LOCK_delayed_status", PSI_FLAG_GLOBAL},
  { &key_LOCK_error_log, "LOCK_error_log", PSI_FLAG_GLOBAL},
  { &key_LOCK_gdl, "LOCK_gdl", PSI_FLAG_GLOBAL},
  { &key_LOCK_global_system_variables, "LOCK_global_system_variables", PSI_FLAG_GLOBAL},
  { &key_LOCK_manager, "LOCK_manager", PSI_FLAG_GLOBAL},
  { &key_LOCK_prepared_stmt_count, "LOCK_prepared_stmt_count", PSI_FLAG_GLOBAL},
  { &key_LOCK_rpl_status, "LOCK_rpl_status", PSI_FLAG_GLOBAL},
  { &key_LOCK_server_started, "LOCK_server_started", PSI_FLAG_GLOBAL},
  { &key_LOCK_status, "LOCK_status", PSI_FLAG_GLOBAL},
  { &key_LOCK_system_variables_hash, "LOCK_system_variables_hash", PSI_FLAG_GLOBAL},
  { &key_LOCK_stats, "LOCK_stats", PSI_FLAG_GLOBAL},
  { &key_LOCK_global_user_client_stats, "LOCK_global_user_client_stats", PSI_FLAG_GLOBAL},
  { &key_LOCK_global_table_stats, "LOCK_global_table_stats", PSI_FLAG_GLOBAL},
  { &key_LOCK_global_index_stats, "LOCK_global_index_stats", PSI_FLAG_GLOBAL},
  { &key_LOCK_wakeup_ready, "THD::LOCK_wakeup_ready", 0},
  { &key_LOCK_wait_commit, "wait_for_commit::LOCK_wait_commit", 0},
  { &key_LOCK_gtid_waiting, "gtid_waiting::LOCK_gtid_waiting", 0},
  { &key_LOCK_thd_data, "THD::LOCK_thd_data", 0},
  { &key_LOCK_thd_kill, "THD::LOCK_thd_kill", 0},
  { &key_LOCK_user_conn, "LOCK_user_conn", PSI_FLAG_GLOBAL},
  { &key_LOCK_uuid_short_generator, "LOCK_uuid_short_generator", PSI_FLAG_GLOBAL},
  { &key_LOG_LOCK_log, "LOG::LOCK_log", 0},
  { &key_master_info_data_lock, "Master_info::data_lock", 0},
  { &key_master_info_start_stop_lock, "Master_info::start_stop_lock", 0},
  { &key_master_info_run_lock, "Master_info::run_lock", 0},
  { &key_master_info_sleep_lock, "Master_info::sleep_lock", 0},
  { &key_mutex_slave_reporting_capability_err_lock, "Slave_reporting_capability::err_lock", 0},
  { &key_relay_log_info_data_lock, "Relay_log_info::data_lock", 0},
  { &key_relay_log_info_log_space_lock, "Relay_log_info::log_space_lock", 0},
  { &key_relay_log_info_run_lock, "Relay_log_info::run_lock", 0},
  { &key_rpl_group_info_sleep_lock, "Rpl_group_info::sleep_lock", 0},
  { &key_structure_guard_mutex, "Query_cache::structure_guard_mutex", 0},
  { &key_TABLE_SHARE_LOCK_ha_data, "TABLE_SHARE::LOCK_ha_data", 0},
  { &key_TABLE_SHARE_LOCK_share, "TABLE_SHARE::LOCK_share", 0},
  { &key_TABLE_SHARE_LOCK_rotation, "TABLE_SHARE::LOCK_rotation", 0},
  { &key_LOCK_error_messages, "LOCK_error_messages", PSI_FLAG_GLOBAL},
  { &key_LOCK_prepare_ordered, "LOCK_prepare_ordered", PSI_FLAG_GLOBAL},
  { &key_LOCK_after_binlog_sync, "LOCK_after_binlog_sync", PSI_FLAG_GLOBAL},
  { &key_LOCK_commit_ordered, "LOCK_commit_ordered", PSI_FLAG_GLOBAL},
  { &key_PARTITION_LOCK_auto_inc, "HA_DATA_PARTITION::LOCK_auto_inc", 0},
  { &key_LOCK_slave_state, "LOCK_slave_state", 0},
  { &key_LOCK_start_thread, "LOCK_start_thread", PSI_FLAG_GLOBAL},
  { &key_LOCK_binlog_state, "LOCK_binlog_state", 0},
  { &key_LOCK_rpl_thread, "LOCK_rpl_thread", 0},
  { &key_LOCK_rpl_thread_pool, "LOCK_rpl_thread_pool", 0},
  { &key_LOCK_parallel_entry, "LOCK_parallel_entry", 0},
  { &key_LOCK_ack_receiver, "Ack_receiver::mutex", 0},
  { &key_LOCK_rpl_semi_sync_master_enabled, "LOCK_rpl_semi_sync_master_enabled", 0},
  { &key_LOCK_binlog, "LOCK_binlog", 0}
};

PSI_rwlock_key key_rwlock_LOCK_grant, key_rwlock_LOCK_logger,
  key_rwlock_LOCK_sys_init_connect, key_rwlock_LOCK_sys_init_slave,
  key_rwlock_LOCK_system_variables_hash, key_rwlock_query_cache_query_lock,
  key_LOCK_SEQUENCE,
  key_rwlock_LOCK_vers_stats, key_rwlock_LOCK_stat_serial,
  key_rwlock_LOCK_ssl_refresh,
  key_rwlock_THD_list,
  key_rwlock_LOCK_all_status_vars;

static PSI_rwlock_info all_server_rwlocks[]=
{
#ifdef HAVE_OPENSSL10
  { &key_rwlock_openssl, "CRYPTO_dynlock_value::lock", 0},
#endif
  { &key_rwlock_LOCK_grant, "LOCK_grant", PSI_FLAG_GLOBAL},
  { &key_rwlock_LOCK_logger, "LOGGER::LOCK_logger", 0},
  { &key_rwlock_LOCK_sys_init_connect, "LOCK_sys_init_connect", PSI_FLAG_GLOBAL},
  { &key_rwlock_LOCK_sys_init_slave, "LOCK_sys_init_slave", PSI_FLAG_GLOBAL},
  { &key_LOCK_SEQUENCE, "LOCK_SEQUENCE", 0},
  { &key_rwlock_LOCK_system_variables_hash, "LOCK_system_variables_hash", PSI_FLAG_GLOBAL},
  { &key_rwlock_query_cache_query_lock, "Query_cache_query::lock", 0},
  { &key_rwlock_LOCK_vers_stats, "Vers_field_stats::lock", 0},
  { &key_rwlock_LOCK_stat_serial, "TABLE_SHARE::LOCK_stat_serial", 0},
  { &key_rwlock_LOCK_ssl_refresh, "LOCK_ssl_refresh", PSI_FLAG_GLOBAL },
  { &key_rwlock_THD_list, "THD_list::lock", PSI_FLAG_GLOBAL },
  { &key_rwlock_LOCK_all_status_vars, "LOCK_all_status_vars", PSI_FLAG_GLOBAL }
};

#ifdef HAVE_MMAP
PSI_cond_key key_PAGE_cond, key_COND_active, key_COND_pool;
#endif /* HAVE_MMAP */

PSI_cond_key key_BINLOG_COND_xid_list,
  key_BINLOG_COND_bin_log_updated, key_BINLOG_COND_relay_log_updated,
  key_BINLOG_COND_binlog_background_thread,
  key_BINLOG_COND_binlog_background_thread_end,
  key_COND_cache_status_changed, key_COND_manager,
  key_COND_rpl_status, key_COND_server_started,
  key_delayed_insert_cond, key_delayed_insert_cond_client,
  key_item_func_sleep_cond, key_master_info_data_cond,
  key_master_info_start_cond, key_master_info_stop_cond,
  key_master_info_sleep_cond,
  key_relay_log_info_data_cond, key_relay_log_info_log_space_cond,
  key_relay_log_info_start_cond, key_relay_log_info_stop_cond,
  key_rpl_group_info_sleep_cond,
  key_TABLE_SHARE_cond, key_user_level_lock_cond,
  key_COND_start_thread, key_COND_binlog_send,
  key_BINLOG_COND_queue_busy;
PSI_cond_key key_RELAYLOG_COND_relay_log_updated,
  key_RELAYLOG_COND_bin_log_updated, key_COND_wakeup_ready,
  key_COND_wait_commit;
PSI_cond_key key_RELAYLOG_COND_queue_busy;
PSI_cond_key key_TC_LOG_MMAP_COND_queue_busy;
PSI_cond_key key_COND_rpl_thread_queue, key_COND_rpl_thread,
  key_COND_rpl_thread_stop, key_COND_rpl_thread_pool,
  key_COND_parallel_entry, key_COND_group_commit_orderer,
  key_COND_prepare_ordered;
PSI_cond_key key_COND_wait_gtid, key_COND_gtid_ignore_duplicates;
PSI_cond_key key_COND_ack_receiver;

static PSI_cond_info all_server_conds[]=
{
#ifdef HAVE_MMAP
  { &key_PAGE_cond, "PAGE::cond", 0},
  { &key_COND_active, "TC_LOG_MMAP::COND_active", 0},
  { &key_COND_pool, "TC_LOG_MMAP::COND_pool", 0},
  { &key_TC_LOG_MMAP_COND_queue_busy, "TC_LOG_MMAP::COND_queue_busy", 0},
#endif /* HAVE_MMAP */
  { &key_BINLOG_COND_bin_log_updated, "MYSQL_BIN_LOG::COND_bin_log_updated", 0}, { &key_BINLOG_COND_relay_log_updated, "MYSQL_BIN_LOG::COND_relay_log_updated", 0},
  { &key_BINLOG_COND_xid_list, "MYSQL_BIN_LOG::COND_xid_list", 0},
  { &key_BINLOG_COND_binlog_background_thread, "MYSQL_BIN_LOG::COND_binlog_background_thread", 0},
  { &key_BINLOG_COND_binlog_background_thread_end, "MYSQL_BIN_LOG::COND_binlog_background_thread_end", 0},
  { &key_BINLOG_COND_queue_busy, "MYSQL_BIN_LOG::COND_queue_busy", 0},
  { &key_RELAYLOG_COND_relay_log_updated, "MYSQL_RELAY_LOG::COND_relay_log_updated", 0},
  { &key_RELAYLOG_COND_bin_log_updated, "MYSQL_RELAY_LOG::COND_bin_log_updated", 0},
  { &key_RELAYLOG_COND_queue_busy, "MYSQL_RELAY_LOG::COND_queue_busy", 0},
  { &key_COND_wakeup_ready, "THD::COND_wakeup_ready", 0},
  { &key_COND_wait_commit, "wait_for_commit::COND_wait_commit", 0},
  { &key_COND_cache_status_changed, "Query_cache::COND_cache_status_changed", 0},
  { &key_COND_manager, "COND_manager", PSI_FLAG_GLOBAL},
  { &key_COND_server_started, "COND_server_started", PSI_FLAG_GLOBAL},
  { &key_delayed_insert_cond, "Delayed_insert::cond", 0},
  { &key_delayed_insert_cond_client, "Delayed_insert::cond_client", 0},
  { &key_item_func_sleep_cond, "Item_func_sleep::cond", 0},
  { &key_master_info_data_cond, "Master_info::data_cond", 0},
  { &key_master_info_start_cond, "Master_info::start_cond", 0},
  { &key_master_info_stop_cond, "Master_info::stop_cond", 0},
  { &key_master_info_sleep_cond, "Master_info::sleep_cond", 0},
  { &key_relay_log_info_data_cond, "Relay_log_info::data_cond", 0},
  { &key_relay_log_info_log_space_cond, "Relay_log_info::log_space_cond", 0},
  { &key_relay_log_info_start_cond, "Relay_log_info::start_cond", 0},
  { &key_relay_log_info_stop_cond, "Relay_log_info::stop_cond", 0},
  { &key_rpl_group_info_sleep_cond, "Rpl_group_info::sleep_cond", 0},
  { &key_TABLE_SHARE_cond, "TABLE_SHARE::cond", 0},
  { &key_user_level_lock_cond, "User_level_lock::cond", 0},
  { &key_COND_rpl_thread, "COND_rpl_thread", 0},
  { &key_COND_rpl_thread_queue, "COND_rpl_thread_queue", 0},
  { &key_COND_rpl_thread_stop, "COND_rpl_thread_stop", 0},
  { &key_COND_rpl_thread_pool, "COND_rpl_thread_pool", 0},
  { &key_COND_parallel_entry, "COND_parallel_entry", 0},
  { &key_COND_group_commit_orderer, "COND_group_commit_orderer", 0},
  { &key_COND_prepare_ordered, "COND_prepare_ordered", 0},
  { &key_COND_start_thread, "COND_start_thread", PSI_FLAG_GLOBAL},
  { &key_COND_wait_gtid, "COND_wait_gtid", 0},
  { &key_COND_gtid_ignore_duplicates, "COND_gtid_ignore_duplicates", 0},
  { &key_COND_ack_receiver, "Ack_receiver::cond", 0},
  { &key_COND_binlog_send, "COND_binlog_send", 0},
  { &key_TABLE_SHARE_COND_rotation, "TABLE_SHARE::COND_rotation", 0}
};

PSI_thread_key key_thread_delayed_insert,
  key_thread_handle_manager, key_thread_main,
  key_thread_one_connection, key_thread_signal_hand,
  key_thread_slave_background, key_rpl_parallel_thread;
PSI_thread_key key_thread_ack_receiver;

static PSI_thread_info all_server_threads[]=
{
  { &key_thread_delayed_insert, "delayed_insert", 0},
  { &key_thread_handle_manager, "manager", PSI_FLAG_GLOBAL},
  { &key_thread_main, "main", PSI_FLAG_GLOBAL},
  { &key_thread_one_connection, "one_connection", 0},
  { &key_thread_signal_hand, "signal_handler", PSI_FLAG_GLOBAL},
  { &key_thread_slave_background, "slave_background", PSI_FLAG_GLOBAL},
  { &key_thread_ack_receiver, "Ack_receiver", PSI_FLAG_GLOBAL},
  { &key_rpl_parallel_thread, "rpl_parallel_thread", 0}
};

#ifdef HAVE_MMAP
PSI_file_key key_file_map;
#endif /* HAVE_MMAP */

#endif /* HAVE_PSI_INTERFACE */

#ifdef HAVE_PSI_STATEMENT_INTERFACE
PSI_statement_info stmt_info_new_packet;
#endif

#ifdef WITH_WSREP
/** Whether the Galera write-set replication is enabled. A cached copy of
global_system_variables.wsrep_on && wsrep_provider &&
  strcmp(wsrep_provider, WSREP_NONE)
*/
bool WSREP_ON_;
#endif /* WITH_WSREP */

#ifndef EMBEDDED_LIBRARY
void net_before_header_psi(struct st_net *net, void *thd, size_t /* unused: count */)
{
  DBUG_ASSERT(thd);
  /*
    We only come where when the server is IDLE, waiting for the next command.
    Technically, it is a wait on a socket, which may take a long time,
    because the call is blocking.
    Disable the socket instrumentation, to avoid recording a SOCKET event.
    Instead, start explicitly an IDLE event.
  */
  MYSQL_SOCKET_SET_STATE(net->vio->mysql_socket, PSI_SOCKET_STATE_IDLE);
  MYSQL_START_IDLE_WAIT(static_cast<THD*>(thd)->m_idle_psi,
                        &static_cast<THD*>(thd)->m_idle_state);
}

void net_after_header_psi(struct st_net *net, void *user_data,
                          size_t /* unused: count */, my_bool rc)
{
  THD *thd;
  thd= static_cast<THD*> (user_data);
  DBUG_ASSERT(thd != NULL);

  /*
    The server just got data for a network packet header,
    from the network layer.
    The IDLE event is now complete, since we now have a message to process.
    We need to:
    - start a new STATEMENT event
    - start a new STAGE event, within this statement,
    - start recording SOCKET WAITS events, within this stage.
    The proper order is critical to get events numbered correctly,
    and nested in the proper parent.
  */
  MYSQL_END_IDLE_WAIT(thd->m_idle_psi);

  if (! rc)
  {
    thd->m_statement_psi= MYSQL_START_STATEMENT(&thd->m_statement_state,
                                                stmt_info_new_packet.m_key,
                                                thd->get_db(), thd->db.length,
                                                thd->charset(), NULL);

    THD_STAGE_INFO(thd, stage_starting);
  }

  /*
    TODO: consider recording a SOCKET event for the bytes just read,
    by also passing count here.
  */
  MYSQL_SOCKET_SET_STATE(net->vio->mysql_socket, PSI_SOCKET_STATE_ACTIVE);
}


void init_net_server_extension(THD *thd)
{
  /* Start with a clean state for connection events. */
  thd->m_idle_psi= NULL;
  thd->m_statement_psi= NULL;
  /* Hook up the NET_SERVER callback in the net layer. */
  thd->m_net_server_extension.m_user_data= thd;
  thd->m_net_server_extension.m_before_header= net_before_header_psi;
  thd->m_net_server_extension.m_after_header= net_after_header_psi;
  /* Activate this private extension for the mysqld server. */
  thd->net.extension= & thd->m_net_server_extension;
}
#else
void init_net_server_extension(THD *thd)
{
}
#endif /* EMBEDDED_LIBRARY */


/**
  A log message for the error log, buffered in memory.
  Log messages are temporarily buffered when generated before the error log
  is initialized, and then printed once the error log is ready.
*/
class Buffered_log : public Sql_alloc
{
public:
  Buffered_log(enum loglevel level, const char *message);

  ~Buffered_log()
  {}

  void print(void);

private:
  /** Log message level. */
  enum loglevel m_level;
  /** Log message text. */
  String m_message;
};

/**
  Constructor.
  @param level          the message log level
  @param message        the message text
*/
Buffered_log::Buffered_log(enum loglevel level, const char *message)
  : m_level(level), m_message()
{
  m_message.copy(message, strlen(message), &my_charset_latin1);
}

/**
  Print a buffered log to the real log file.
*/
void Buffered_log::print()
{
  /*
    Since messages are buffered, they can be printed out
    of order with other entries in the log.
    Add "Buffered xxx" to the message text to prevent confusion.
  */
  switch(m_level)
  {
  case ERROR_LEVEL:
    sql_print_error("Buffered error: %s", m_message.c_ptr_safe());
    break;
  case WARNING_LEVEL:
    sql_print_warning("Buffered warning: %s", m_message.c_ptr_safe());
    break;
  case INFORMATION_LEVEL:
    /*
      Messages printed as "information" still end up in the mysqld *error* log,
      but with a [Note] tag instead of an [ERROR] tag.
      While this is probably fine for a human reading the log,
      it is upsetting existing automated scripts used to parse logs,
      because such scripts are likely to not already handle [Note] properly.
      INFORMATION_LEVEL messages are simply silenced, on purpose,
      to avoid un needed verbosity.
    */
    break;
  }
}

/**
  Collection of all the buffered log messages.
*/
class Buffered_logs
{
public:
  Buffered_logs()
  {}

  ~Buffered_logs()
  {}

  void init();
  void cleanup();

  void buffer(enum loglevel m_level, const char *msg);
  void print();
private:
  /**
    Memory root to use to store buffered logs.
    This memory root lifespan is between init and cleanup.
    Once the buffered logs are printed, they are not needed anymore,
    and all the memory used is reclaimed.
  */
  MEM_ROOT m_root;
  /** List of buffered log messages. */
  List<Buffered_log> m_list;
};

void Buffered_logs::init()
{
  init_alloc_root(PSI_NOT_INSTRUMENTED, &m_root, 1024, 0, MYF(0));
}

void Buffered_logs::cleanup()
{
  m_list.delete_elements();
  free_root(&m_root, MYF(0));
}

/**
  Add a log message to the buffer.
*/
void Buffered_logs::buffer(enum loglevel level, const char *msg)
{
  /*
    Do not let Sql_alloc::operator new(size_t) allocate memory,
    there is no memory root associated with the main() thread.
    Give explicitly the proper memory root to use to
    Sql_alloc::operator new(size_t, MEM_ROOT *) instead.
  */
  Buffered_log *log= new (&m_root) Buffered_log(level, msg);
  if (log)
    m_list.push_back(log, &m_root);
}

/**
  Print buffered log messages.
*/
void Buffered_logs::print()
{
  Buffered_log *log;
  List_iterator_fast<Buffered_log> it(m_list);
  while ((log= it++))
    log->print();
}

/** Logs reported before a logger is available. */
static Buffered_logs buffered_logs;

struct my_rnd_struct sql_rand; ///< used by sql_class.cc:THD::THD()

#ifndef EMBEDDED_LIBRARY
MYSQL_SOCKET unix_sock, base_ip_sock, extra_ip_sock;
/**
  Error reporter that buffer log messages.
  @param level          log message level
  @param format         log message format string
*/
C_MODE_START
static void buffered_option_error_reporter(enum loglevel level,
                                           const char *format, ...)
{
  va_list args;
  char buffer[1024];

  va_start(args, format);
  my_vsnprintf(buffer, sizeof(buffer), format, args);
  va_end(args);
  buffered_logs.buffer(level, buffer);
}


/**
  Character set and collation error reporter that prints to sql error log.
  @param level          log message level
  @param format         log message format string

  This routine is used to print character set and collation
  warnings and errors inside an already running mysqld server,
  e.g. when a character set or collation is requested for the very first time
  and its initialization does not go well for some reasons.

  Note: At early mysqld initialization stage,
  when error log is not yet available,
  we use buffered_option_error_reporter() instead,
  to print general character set subsystem initialization errors,
  such as Index.xml syntax problems, bad XML tag hierarchy, etc.
*/
static void charset_error_reporter(enum loglevel level,
                                   const char *format, ...)
{
  va_list args;
  va_start(args, format);
  vprint_msg_to_log(level, format, args);
  va_end(args);                      
}
C_MODE_END

struct passwd *user_info;
static pthread_t select_thread;
#endif

/* OS specific variables */

#ifdef __WIN__
#undef	 getpid
#include <process.h>

static bool start_mode=0, use_opt_args;
static int opt_argc;
static char **opt_argv;

#if !defined(EMBEDDED_LIBRARY)
HANDLE hEventShutdown;
static char shutdown_event_name[40];
#include "nt_servc.h"
static	 NTService  Service;	      ///< Service object for WinNT
#endif /* EMBEDDED_LIBRARY */
#endif /* __WIN__ */

#ifndef EMBEDDED_LIBRARY
bool mysqld_embedded=0;
#else
bool mysqld_embedded=1;
#endif

my_bool plugins_are_initialized= FALSE;

#ifndef DBUG_OFF
static const char* default_dbug_option;
#endif
#ifdef HAVE_LIBWRAP
const char *libwrapName= NULL;
int allow_severity = LOG_INFO;
int deny_severity = LOG_WARNING;
#endif
#ifdef HAVE_QUERY_CACHE
ulong query_cache_min_res_unit= QUERY_CACHE_MIN_RESULT_DATA_SIZE;
Query_cache query_cache;
#endif


my_bool opt_use_ssl  = 0;
char *opt_ssl_ca= NULL, *opt_ssl_capath= NULL, *opt_ssl_cert= NULL,
  *opt_ssl_cipher= NULL, *opt_ssl_key= NULL, *opt_ssl_crl= NULL,
  *opt_ssl_crlpath= NULL, *opt_tls_version= NULL;
ulonglong tls_version= 0;

static scheduler_functions thread_scheduler_struct, extra_thread_scheduler_struct;
scheduler_functions *thread_scheduler= &thread_scheduler_struct,
                    *extra_thread_scheduler= &extra_thread_scheduler_struct;

#ifdef HAVE_OPENSSL
#include <openssl/crypto.h>
#if defined(HAVE_OPENSSL10) && !defined(HAVE_WOLFSSL)
typedef struct CRYPTO_dynlock_value
{
  mysql_rwlock_t lock;
} openssl_lock_t;

static openssl_lock_t *openssl_stdlocks;
static openssl_lock_t *openssl_dynlock_create(const char *, int);
static void openssl_dynlock_destroy(openssl_lock_t *, const char *, int);
static void openssl_lock_function(int, int, const char *, int);
static void openssl_lock(int, openssl_lock_t *, const char *, int);
#endif /* HAVE_OPENSSL10 */
char *des_key_file;
#ifndef EMBEDDED_LIBRARY
struct st_VioSSLFd *ssl_acceptor_fd;
#endif
#endif /* HAVE_OPENSSL */

/**
  Number of currently active user connections.
*/
Atomic_counter<uint> connection_count;
static Atomic_counter<uint> extra_connection_count;

my_bool opt_gtid_strict_mode= FALSE;


/* Function declarations */

pthread_handler_t signal_hand(void *arg);
static int mysql_init_variables(void);
static int get_options(int *argc_ptr, char ***argv_ptr);
static bool add_terminator(DYNAMIC_ARRAY *options);
static bool add_many_options(DYNAMIC_ARRAY *, my_option *, size_t);
extern "C" my_bool mysqld_get_one_option(const struct my_option *, const char *,
                                         const char *);
static int init_thread_environment();
static char *get_relative_path(const char *path);
static int fix_paths(void);
#ifndef _WIN32
void handle_connections_sockets();
#endif

static bool read_init_file(char *file_name);
pthread_handler_t handle_slave(void *arg);
static void clean_up(bool print_message);
static int test_if_case_insensitive(const char *dir_name);

#ifndef EMBEDDED_LIBRARY
static bool pid_file_created= false;
static void usage(void);
static void start_signal_handler(void);
static void close_server_sock();
static void clean_up_mutexes(void);
static void wait_for_signal_thread_to_end(void);
static void create_pid_file();
ATTRIBUTE_NORETURN static void mysqld_exit(int exit_code);
#endif
static void delete_pid_file(myf flags);
static void end_ssl();


#ifndef EMBEDDED_LIBRARY
/****************************************************************************
** Code to end mysqld
****************************************************************************/

/* common callee of two shutdown phases */
static void kill_thread(THD *thd)
{
  mysql_mutex_lock(&thd->LOCK_thd_kill);
  thd->abort_current_cond_wait(true);
  mysql_mutex_unlock(&thd->LOCK_thd_kill);
}


/**
  First shutdown everything but slave threads and binlog dump connections
*/
static my_bool kill_thread_phase_1(THD *thd, void *)
{
  DBUG_PRINT("quit", ("Informing thread %ld that it's time to die",
                      (ulong) thd->thread_id));
  if (thd->slave_thread || thd->is_binlog_dump_thread())
    return 0;

  if (DBUG_EVALUATE_IF("only_kill_system_threads", !thd->system_thread, 0))
    return 0;

  thd->set_killed(KILL_SERVER_HARD);
  MYSQL_CALLBACK(thread_scheduler, post_kill_notification, (thd));
  kill_thread(thd);
  return 0;
}


/**
  Last shutdown binlog dump connections
*/
static my_bool kill_thread_phase_2(THD *thd, void *)
{
  if (shutdown_wait_for_slaves)
  {
    thd->set_killed(KILL_SERVER);
  }
  else
  {
    thd->set_killed(KILL_SERVER_HARD);
    MYSQL_CALLBACK(thread_scheduler, post_kill_notification, (thd));
  }
  kill_thread(thd);
  return 0;
}


/* associated with the kill thread phase 1 */
static my_bool warn_threads_active_after_phase_1(THD *thd, void *)
{
  if (!thd->is_binlog_dump_thread() && thd->vio_ok())
    sql_print_warning("%s: Thread %llu (user : '%s') did not exit\n", my_progname,
                      (ulonglong) thd->thread_id,
                      (thd->main_security_ctx.user ?
                       thd->main_security_ctx.user : ""));
  return 0;
}


/* associated with the kill thread phase 2 */
static my_bool warn_threads_active_after_phase_2(THD *thd, void *)
{
  mysql_mutex_lock(&thd->LOCK_thd_data);
  // dump thread may not have yet (or already) current_linfo set
  sql_print_warning("Dump thread %llu last sent to server %lu "
                    "binlog file:pos %s:%llu",
                    thd->thread_id, thd->variables.server_id,
                    thd->current_linfo ?
                    my_basename(thd->current_linfo->log_file_name) : "NULL",
                    thd->current_linfo ? thd->current_linfo->pos : 0);
  mysql_mutex_unlock(&thd->LOCK_thd_data);

  return 0;
}


/**
  Kills main thread.

  @note this function is responsible for setting abort_loop and breaking
  poll() in main thread. Shutdown as such is supposed to be performed by main
  thread itself.
*/

static void break_connect_loop()
{
#ifdef EXTRA_DEBUG
  int count=0;
#endif

  abort_loop= 1;

#if defined(__WIN__)
  if (!SetEvent(hEventShutdown))
    DBUG_PRINT("error", ("Got error: %ld from SetEvent", GetLastError()));
#else
  /* Avoid waiting for ourselves when thread-handling=no-threads. */
  if (pthread_equal(pthread_self(), select_thread))
    return;
  DBUG_PRINT("quit", ("waiting for select thread: %lu",
                      (ulong)select_thread));

  mysql_mutex_lock(&LOCK_start_thread);
  while (select_thread_in_use)
  {
    struct timespec abstime;
    int UNINIT_VAR(error);
    DBUG_PRINT("info",("Waiting for select thread"));

#ifndef DONT_USE_THR_ALARM
    if (pthread_kill(select_thread, thr_client_alarm))
      break;					// allready dead
#endif
    set_timespec(abstime, 2);
    for (uint tmp=0 ; tmp < 10 && select_thread_in_use; tmp++)
    {
      error= mysql_cond_timedwait(&COND_start_thread, &LOCK_start_thread,
                                  &abstime);
      if (error != EINTR)
        break;
    }
#ifdef EXTRA_DEBUG
    if (error != 0 && error != ETIMEDOUT && !count++)
      sql_print_error("Got error %d from mysql_cond_timedwait", error);
#endif
    close_server_sock();
  }
  mysql_mutex_unlock(&LOCK_start_thread);
#endif /* __WIN__ */
}


/**
  A wrapper around kill_main_thrad().

  Sets shutdown user. This function may be called by multiple threads
  concurrently, thus it performs safe update of shutdown_user
  (first thread wins).
*/

void kill_mysql(THD *thd)
{
  char user_host_buff[MAX_USER_HOST_SIZE + 1];
  char *user, *expected_shutdown_user= 0;

  make_user_name(thd, user_host_buff);

  if ((user= my_strdup(PSI_NOT_INSTRUMENTED, user_host_buff, MYF(0))) &&
      !shutdown_user.compare_exchange_strong(expected_shutdown_user,
                                             user,
                                             std::memory_order_relaxed,
                                             std::memory_order_relaxed))
  {
    my_free(user);
  }

  DBUG_EXECUTE_IF("mysql_admin_shutdown_wait_for_slaves",
                  thd->lex->is_shutdown_wait_for_slaves= true;);
  DBUG_EXECUTE_IF("simulate_delay_at_shutdown",
                  {
                    DBUG_ASSERT(binlog_dump_thread_count == 3);
                    const char act[]=
                      "now "
                      "SIGNAL greetings_from_kill_mysql";
                    DBUG_ASSERT(!debug_sync_set_action(thd,
                                                       STRING_WITH_LEN(act)));
                  };);

  if (thd->lex->is_shutdown_wait_for_slaves)
    shutdown_wait_for_slaves= true;
  break_connect_loop();
}


static void close_connections(void)
{
  DBUG_ENTER("close_connections");

  /* Clear thread cache */
  thread_cache.final_flush();

  /* Abort listening to new connections */
  DBUG_PRINT("quit",("Closing sockets"));
  if (!opt_disable_networking )
  {
    if (mysql_socket_getfd(base_ip_sock) != INVALID_SOCKET)
    {
      (void) mysql_socket_close(base_ip_sock);
      base_ip_sock= MYSQL_INVALID_SOCKET;
    }
    if (mysql_socket_getfd(extra_ip_sock) != INVALID_SOCKET)
    {
      (void) mysql_socket_close(extra_ip_sock);
      extra_ip_sock= MYSQL_INVALID_SOCKET;
    }
  }

#ifdef HAVE_SYS_UN_H
  if (mysql_socket_getfd(unix_sock) != INVALID_SOCKET)
  {
    (void) mysql_socket_close(unix_sock);
    (void) unlink(mysqld_unix_port);
    unix_sock= MYSQL_INVALID_SOCKET;
  }
#endif
  end_thr_alarm(0);			 // Abort old alarms.

  /*
    First signal all threads that it's time to die
    This will give the threads some time to gracefully abort their
    statements and inform their clients that the server is about to die.
  */
  server_threads.iterate(kill_thread_phase_1);

  Events::deinit();
  slave_prepare_for_shutdown();
  mysql_bin_log.stop_background_thread();
  ack_receiver.stop();

  /*
    Give threads time to die.

    In 5.5, this was waiting 100 rounds @ 20 milliseconds/round, so as little
    as 2 seconds, depending on thread scheduling.

    From 10.0, we increase this to 1000 rounds / 20 seconds. The rationale is
    that on a server with heavy I/O load, it is quite possible for eg. an
    fsync() of the binlog or whatever to cause something like LOCK_log to be
    held for more than 2 seconds. We do not want to force kill threads in
    such cases, if it can be avoided. Note that normally, the wait will be
    much smaller than even 2 seconds, this is only a safety fallback against
    stuck threads so server shutdown is not held up forever.
  */
  DBUG_PRINT("info", ("thread_count: %u", uint32_t(thread_count)));

  for (int i= 0; (thread_count - binlog_dump_thread_count) && i < 1000; i++)
    my_sleep(20000);

  if (global_system_variables.log_warnings)
    server_threads.iterate(warn_threads_active_after_phase_1);

#ifdef WITH_WSREP
  if (wsrep_inited == 1)
  {
    wsrep_deinit(true);
  }
#endif
  /* All threads has now been aborted */
  DBUG_PRINT("quit", ("Waiting for threads to die (count=%u)",
                      uint32_t(thread_count)));

  while (thread_count - binlog_dump_thread_count)
    my_sleep(1000);

  /* Kill phase 2 */
  server_threads.iterate(kill_thread_phase_2);
  for (uint64 i= 0; thread_count; i++)
  {
    /*
      This time the warnings are emitted within the loop to provide a
      dynamic view on the shutdown status through the errorlog.
    */
    if (global_system_variables.log_warnings > 2 && i % 60000 == 0)
      server_threads.iterate(warn_threads_active_after_phase_2);
    my_sleep(1000);
  }
  /* End of kill phase 2 */

  DBUG_PRINT("quit",("close_connections thread"));
  DBUG_VOID_RETURN;
}


#ifdef HAVE_CLOSE_SERVER_SOCK
static void close_socket(MYSQL_SOCKET sock, const char *info)
{
  DBUG_ENTER("close_socket");

  if (mysql_socket_getfd(sock) != INVALID_SOCKET)
  {
    DBUG_PRINT("info", ("calling shutdown on %s socket", info));
    (void) mysql_socket_shutdown(sock, SHUT_RDWR);
  }
  DBUG_VOID_RETURN;
}
#endif


static void close_server_sock()
{
#ifdef HAVE_CLOSE_SERVER_SOCK
  DBUG_ENTER("close_server_sock");

  close_socket(base_ip_sock, "TCP/IP");
  close_socket(extra_ip_sock, "TCP/IP");
  close_socket(unix_sock, "unix/IP");

  if (mysql_socket_getfd(unix_sock) != INVALID_SOCKET)
    (void) unlink(mysqld_unix_port);
  base_ip_sock= extra_ip_sock= unix_sock= MYSQL_INVALID_SOCKET;

  DBUG_VOID_RETURN;
#endif
}

#endif /*EMBEDDED_LIBRARY*/


extern "C" sig_handler print_signal_warning(int sig)
{
  if (global_system_variables.log_warnings)
    sql_print_warning("Got signal %d from thread %u", sig,
                      (uint)my_thread_id());
#ifdef SIGNAL_HANDLER_RESET_ON_DELIVERY
  my_sigset(sig,print_signal_warning);		/* int. thread system calls */
#endif
#if !defined(__WIN__)
  if (sig == SIGALRM)
    alarm(2);					/* reschedule alarm */
#endif
}

#ifndef EMBEDDED_LIBRARY
extern "C" void unireg_abort(int exit_code)
{
  DBUG_ENTER("unireg_abort");

  if (opt_help)
    usage();
  else if (exit_code)
    sql_print_error("Aborting");
  /* Don't write more notes to the log to not hide error message */
  disable_log_notes= 1;

#ifdef WITH_WSREP
  // Note that we do not have thd here, thus can't use
  // WSREP(thd)

  if (WSREP_ON &&
      Wsrep_server_state::is_inited() &&
      Wsrep_server_state::instance().state() != wsrep::server_state::s_disconnected)
  {
    /*
      This is an abort situation, we cannot expect to gracefully close all
      wsrep threads here, we can only diconnect from service
    */
    wsrep_close_client_connections(FALSE);
    Wsrep_server_state::instance().disconnect();
    WSREP_INFO("Service disconnected.");
    wsrep_close_threads(NULL); /* this won't close all threads */
    sleep(1); /* so give some time to exit for those which can */
    WSREP_INFO("Some threads may fail to exit.");
  }

  if (WSREP_ON && wsrep_inited)
  {
    wsrep_deinit(true);
    wsrep_deinit_server();
  }
  wsrep_sst_auth_free();
#endif // WITH_WSREP

  clean_up(!opt_abort && (exit_code || !opt_bootstrap)); /* purecov: inspected */
  DBUG_PRINT("quit",("done with cleanup in unireg_abort"));
  mysqld_exit(exit_code);
}


static void mysqld_exit(int exit_code)
{
  DBUG_ENTER("mysqld_exit");
  /*
    Important note: we wait for the signal thread to end,
    but if a kill -15 signal was sent, the signal thread did
    spawn the kill_server_thread thread, which is running concurrently.
  */
  rpl_deinit_gtid_waiting();
  rpl_deinit_gtid_slave_state();
  wait_for_signal_thread_to_end();
#ifdef WITH_WSREP
  wsrep_deinit_server();
#endif /* WITH_WSREP */
  mysql_audit_finalize();
  clean_up_mutexes();
  my_end((opt_endinfo ? MY_CHECK_ERROR | MY_GIVE_INFO : 0));
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  shutdown_performance_schema();        // we do it as late as possible
#endif
  set_malloc_size_cb(NULL);
  if (global_status_var.global_memory_used)
  {
    fprintf(stderr, "Warning: Memory not freed: %lld\n",
            (longlong) global_status_var.global_memory_used);
    if (exit_code == 0)
      SAFEMALLOC_REPORT_MEMORY(0);
  }
  DBUG_LEAVE;
  sd_notify(0, "STATUS=MariaDB server is down");
  exit(exit_code); /* purecov: inspected */
}

#endif /* !EMBEDDED_LIBRARY */

static void clean_up(bool print_message)
{
  DBUG_PRINT("exit",("clean_up"));
  if (cleanup_done++)
    return; /* purecov: inspected */

#ifdef HAVE_REPLICATION
  // We must call end_slave() as clean_up may have been called during startup
  end_slave();
  if (use_slave_mask)
    my_bitmap_free(&slave_error_mask);
#endif
  stop_handle_manager();
  release_ddl_log();

  logger.cleanup_base();

  injector::free_instance();
  mysql_bin_log.cleanup();

  my_tz_free();
  my_dboptions_cache_free();
  ignore_db_dirs_free();
  servers_free(1);
#ifndef NO_EMBEDDED_ACCESS_CHECKS
  acl_free(1);
  grant_free();
#endif
  query_cache_destroy();
  hostname_cache_free();
  item_func_sleep_free();
  lex_free();				/* Free some memory */
  item_create_cleanup();
  tdc_start_shutdown();
#ifdef HAVE_REPLICATION
  semi_sync_master_deinit();
#endif
  plugin_shutdown();
  udf_free();
  ha_end();
  if (tc_log)
    tc_log->close();
  xid_cache_free();
  tdc_deinit();
  mdl_destroy();
  dflt_key_cache= 0;
  key_caches.delete_elements(free_key_cache);
  wt_end();
  multi_keycache_free();
  sp_cache_end();
  free_status_vars();
  end_thr_alarm(1);			/* Free allocated memory */
  end_thr_timer();
  my_free_open_file_info();
  if (defaults_argv)
    free_defaults(defaults_argv);
  free_tmpdir(&mysql_tmpdir_list);
  my_bitmap_free(&temp_pool);
  free_max_user_conn();
  free_global_user_stats();
  free_global_client_stats();
  free_global_table_stats();
  free_global_index_stats();
  delete_dynamic(&all_options);                 // This should be empty
  free_all_rpl_filters();
  wsrep_thr_deinit();
  my_uuid_end();
  delete type_handler_data;
  delete binlog_filter;
  delete global_rpl_filter;
  end_ssl();
#ifndef EMBEDDED_LIBRARY
  vio_end();
#endif /*!EMBEDDED_LIBRARY*/
#if defined(ENABLED_DEBUG_SYNC)
  /* End the debug sync facility. See debug_sync.cc. */
  debug_sync_end();
#endif /* defined(ENABLED_DEBUG_SYNC) */

  delete_pid_file(MYF(0));

  if (print_message && my_default_lc_messages && server_start_time)
    sql_print_information(ER_DEFAULT(ER_SHUTDOWN_COMPLETE),my_progname);
  MYSQL_CALLBACK(thread_scheduler, end, ());
  thread_scheduler= 0;
  mysql_library_end();
  finish_client_errs();
  free_root(&startup_root, MYF(0));
  cleanup_errmsgs();
  free_error_messages();
  /* Tell main we are ready */
  logger.cleanup_end();
  sys_var_end();
  free_charsets();

  my_free(const_cast<char*>(log_bin_basename));
  my_free(const_cast<char*>(log_bin_index));
#ifndef EMBEDDED_LIBRARY
  my_free(const_cast<char*>(relay_log_basename));
  my_free(const_cast<char*>(relay_log_index));
#endif
  free_list(opt_plugin_load_list_ptr);
  destroy_proxy_protocol_networks();

  /*
    The following lines may never be executed as the main thread may have
    killed us
  */
  DBUG_PRINT("quit", ("done with cleanup"));
} /* clean_up */


#ifndef EMBEDDED_LIBRARY

/**
  This is mainly needed when running with purify, but it's still nice to
  know that all child threads have died when mysqld exits.
*/
static void wait_for_signal_thread_to_end()
{
  uint i;
  /*
    Wait up to 10 seconds for signal thread to die. We use this mainly to
    avoid getting warnings that my_thread_end has not been called
  */
  for (i= 0 ; i < 100 && signal_thread_in_use; i++)
  {
    if (pthread_kill(signal_thread, MYSQL_KILL_SIGNAL) == ESRCH)
      break;
    my_sleep(100);				// Give it time to die
  }
}
#endif /*EMBEDDED_LIBRARY*/

static void clean_up_mutexes()
{
  DBUG_ENTER("clean_up_mutexes");
  server_threads.destroy();
  thread_cache.destroy();
  mysql_rwlock_destroy(&LOCK_grant);
  mysql_mutex_destroy(&LOCK_start_thread);
  mysql_mutex_destroy(&LOCK_status);
  mysql_rwlock_destroy(&LOCK_all_status_vars);
  mysql_mutex_destroy(&LOCK_delayed_insert);
  mysql_mutex_destroy(&LOCK_delayed_status);
  mysql_mutex_destroy(&LOCK_delayed_create);
  mysql_mutex_destroy(&LOCK_crypt);
  mysql_mutex_destroy(&LOCK_user_conn);
  mysql_mutex_destroy(&LOCK_thread_id);
  mysql_mutex_destroy(&LOCK_stats);
  mysql_mutex_destroy(&LOCK_global_user_client_stats);
  mysql_mutex_destroy(&LOCK_global_table_stats);
  mysql_mutex_destroy(&LOCK_global_index_stats);
#ifdef HAVE_OPENSSL
  mysql_mutex_destroy(&LOCK_des_key_file);
#if defined(HAVE_OPENSSL10) && !defined(HAVE_WOLFSSL)
  for (int i= 0; i < CRYPTO_num_locks(); ++i)
    mysql_rwlock_destroy(&openssl_stdlocks[i].lock);
  OPENSSL_free(openssl_stdlocks);
#endif /* HAVE_OPENSSL10 */
#endif /* HAVE_OPENSSL */
#ifdef HAVE_REPLICATION
  mysql_mutex_destroy(&LOCK_rpl_status);
#endif /* HAVE_REPLICATION */
  mysql_mutex_destroy(&LOCK_active_mi);
  mysql_rwlock_destroy(&LOCK_ssl_refresh);
  mysql_rwlock_destroy(&LOCK_sys_init_connect);
  mysql_rwlock_destroy(&LOCK_sys_init_slave);
  mysql_mutex_destroy(&LOCK_global_system_variables);
  mysql_prlock_destroy(&LOCK_system_variables_hash);
  mysql_mutex_destroy(&LOCK_short_uuid_generator);
  mysql_mutex_destroy(&LOCK_prepared_stmt_count);
  mysql_mutex_destroy(&LOCK_error_messages);
  mysql_cond_destroy(&COND_start_thread);
  mysql_mutex_destroy(&LOCK_server_started);
  mysql_cond_destroy(&COND_server_started);
  mysql_mutex_destroy(&LOCK_prepare_ordered);
  mysql_cond_destroy(&COND_prepare_ordered);
  mysql_mutex_destroy(&LOCK_after_binlog_sync);
  mysql_mutex_destroy(&LOCK_commit_ordered);
#ifndef EMBEDDED_LIBRARY
  mysql_mutex_destroy(&LOCK_error_log);
#endif
  DBUG_VOID_RETURN;
}


/****************************************************************************
** Init IP and UNIX socket
****************************************************************************/

#ifdef EMBEDDED_LIBRARY
void close_connection(THD *thd, uint sql_errno)
{
}
#else
static void set_ports()
{
  char	*env;
  if (!mysqld_port && !opt_disable_networking)
  {					// Get port if not from commandline
    mysqld_port= MYSQL_PORT;

    /*
      if builder specifically requested a default port, use that
      (even if it coincides with our factory default).
      only if they didn't do we check /etc/services (and, failing
      on that, fall back to the factory default of 3306).
      either default can be overridden by the environment variable
      MYSQL_TCP_PORT, which in turn can be overridden with command
      line options.
    */

#if MYSQL_PORT_DEFAULT == 0
# if !__has_feature(memory_sanitizer) // Work around MSAN deficiency
    struct  servent *serv_ptr;
    if ((serv_ptr= getservbyname("mysql", "tcp")))
      SYSVAR_AUTOSIZE(mysqld_port, ntohs((u_short) serv_ptr->s_port));
# endif
#endif
    if ((env = getenv("MYSQL_TCP_PORT")))
    {
      mysqld_port= (uint) atoi(env);
      set_sys_var_value_origin(&mysqld_port, sys_var::ENV);
    }
  }
  if (!mysqld_unix_port)
  {
#ifdef __WIN__
    mysqld_unix_port= (char*) MYSQL_NAMEDPIPE;
#else
    mysqld_unix_port= (char*) MYSQL_UNIX_ADDR;
#endif
    if ((env = getenv("MYSQL_UNIX_PORT")))
    {
      mysqld_unix_port= env;
      set_sys_var_value_origin(&mysqld_unix_port, sys_var::ENV);
    }
  }
}

/* Change to run as another user if started with --user */

static struct passwd *check_user(const char *user)
{
  myf flags= 0;
  if (global_system_variables.log_warnings)
    flags|= MY_WME;
  if (!opt_bootstrap && !opt_help)
    flags|= MY_FAE;

  struct passwd *tmp_user_info= my_check_user(user, MYF(flags));

  if (!tmp_user_info && my_errno==EINVAL && (flags & MY_FAE))
    unireg_abort(1);

  return tmp_user_info;
}

static inline void allow_coredumps()
{
#ifdef PR_SET_DUMPABLE
  if (test_flags & TEST_CORE_ON_SIGNAL)
  {
    /* inform kernel that process is dumpable */
    (void) prctl(PR_SET_DUMPABLE, 1);
  }
#endif
}


static void set_user(const char *user, struct passwd *user_info_arg)
{
  /*
    We can get a SIGSEGV when calling initgroups() on some systems when NSS
    is configured to use LDAP and the server is statically linked.  We set
    calling_initgroups as a flag to the SIGSEGV handler that is then used to
    output a specific message to help the user resolve this problem.
  */
  calling_initgroups= 1;
  int res= my_set_user(user, user_info_arg, MYF(MY_WME));
  calling_initgroups= 0;
  if (res)
    unireg_abort(1);
  allow_coredumps();
}

#if !defined(__WIN__)
static void set_effective_user(struct passwd *user_info_arg)
{
  DBUG_ASSERT(user_info_arg != 0);
  if (setregid((gid_t)-1, user_info_arg->pw_gid) == -1)
  {
    sql_perror("setregid");
    unireg_abort(1);
  }
  if (setreuid((uid_t)-1, user_info_arg->pw_uid) == -1)
  {
    sql_perror("setreuid");
    unireg_abort(1);
  }
  allow_coredumps();
}
#endif

/** Change root user if started with @c --chroot . */
static void set_root(const char *path)
{
#if !defined(__WIN__)
  if (chroot(path) == -1)
  {
    sql_perror("chroot");
    unireg_abort(1);
  }
  my_setwd("/", MYF(0));
#endif
}

/**
   Activate usage of a tcp port
*/

static MYSQL_SOCKET activate_tcp_port(uint port)
{
  struct addrinfo *ai, *a;
  struct addrinfo hints;
  int error;
  int	arg;
  char port_buf[NI_MAXSERV];
  const char *real_bind_addr_str;
  MYSQL_SOCKET ip_sock= MYSQL_INVALID_SOCKET;
  DBUG_ENTER("activate_tcp_port");
  DBUG_PRINT("general",("IP Socket is %d",port));

  bzero(&hints, sizeof (hints));
  hints.ai_flags= AI_PASSIVE;
  hints.ai_socktype= SOCK_STREAM;
  hints.ai_family= AF_UNSPEC;
  
  if (my_bind_addr_str && strcmp(my_bind_addr_str, "*") == 0)
    real_bind_addr_str= NULL; // windows doesn't seem to support * here
  else
    real_bind_addr_str= my_bind_addr_str;

  my_snprintf(port_buf, NI_MAXSERV, "%d", port);
  error= getaddrinfo(real_bind_addr_str, port_buf, &hints, &ai);
  if (unlikely(error != 0))
  {
    DBUG_PRINT("error",("Got error: %d from getaddrinfo()", error));

    sql_print_error("%s: %s", ER_DEFAULT(ER_IPSOCK_ERROR), gai_strerror(error));
    unireg_abort(1);				/* purecov: tested */
  }

  /*
    special case: for wildcard addresses prefer ipv6 over ipv4,
    because we later switch off IPV6_V6ONLY, so ipv6 wildcard
    addresses will work for ipv4 too
  */
  if (!real_bind_addr_str && ai->ai_family == AF_INET && ai->ai_next
      && ai->ai_next->ai_family == AF_INET6)
  {
    a= ai;
    ai= ai->ai_next;
    a->ai_next= ai->ai_next;
    ai->ai_next= a;
  }

  for (a= ai; a != NULL; a= a->ai_next)
  {
    ip_sock= mysql_socket_socket(key_socket_tcpip, a->ai_family,
                                 a->ai_socktype, a->ai_protocol);

    char ip_addr[INET6_ADDRSTRLEN];
    if (vio_get_normalized_ip_string(a->ai_addr, a->ai_addrlen,
                                     ip_addr, sizeof (ip_addr)))
    {
      ip_addr[0]= 0;
    }

    if (mysql_socket_getfd(ip_sock) == INVALID_SOCKET)
    {
      sql_print_message_func func= real_bind_addr_str ? sql_print_error
                                                      : sql_print_warning;
      func("Failed to create a socket for %s '%s': errno: %d.",
           (a->ai_family == AF_INET) ? "IPv4" : "IPv6",
           (const char *) ip_addr, (int) socket_errno);
    }
    else 
    {
      server_socket_ai_family= a->ai_family;
      sql_print_information("Server socket created on IP: '%s'.",
                          (const char *) ip_addr);
      break;
    }
  }

  if (mysql_socket_getfd(ip_sock) == INVALID_SOCKET)
  {
    DBUG_PRINT("error",("Got error: %d from socket()",socket_errno));
    sql_perror(ER_DEFAULT(ER_IPSOCK_ERROR));  /* purecov: tested */
    unireg_abort(1);				/* purecov: tested */
  }

  mysql_socket_set_thread_owner(ip_sock);

#ifndef __WIN__
  /*
    We should not use SO_REUSEADDR on windows as this would enable a
    user to open two mysqld servers with the same TCP/IP port.
  */
  arg= 1;
  (void) mysql_socket_setsockopt(ip_sock,SOL_SOCKET,SO_REUSEADDR,(char*)&arg,
                                 sizeof(arg));
#endif /* __WIN__ */

#ifdef IPV6_V6ONLY
   /*
     For interoperability with older clients, IPv6 socket should
     listen on both IPv6 and IPv4 wildcard addresses.
     Turn off IPV6_V6ONLY option.

     NOTE: this will work starting from Windows Vista only.
     On Windows XP dual stack is not available, so it will not
     listen on the corresponding IPv4-address.
   */
  if (a->ai_family == AF_INET6)
  {
    arg= 0;
    (void) mysql_socket_setsockopt(ip_sock, IPPROTO_IPV6, IPV6_V6ONLY,
                                   (char*)&arg, sizeof(arg));
  }
#endif

#ifdef IP_FREEBIND
  arg= 1;
  (void) mysql_socket_setsockopt(ip_sock, IPPROTO_IP, IP_FREEBIND, (char*) &arg,
                                 sizeof(arg));
#endif
  /*
    Sometimes the port is not released fast enough when stopping and
    restarting the server. This happens quite often with the test suite
    on busy Linux systems. Retry to bind the address at these intervals:
    Sleep intervals: 1, 2, 4,  6,  9, 13, 17, 22, ...
    Retry at second: 1, 3, 7, 13, 22, 35, 52, 74, ...
    Limit the sequence by mysqld_port_timeout (set --port-open-timeout=#).
  */
  int ret;
  uint waited, retry, this_wait;
  for (waited= 0, retry= 1; ; retry++, waited+= this_wait)
  {
    if (((ret= mysql_socket_bind(ip_sock, a->ai_addr, a->ai_addrlen)) >= 0 ) ||
        (socket_errno != SOCKET_EADDRINUSE) ||
        (waited >= mysqld_port_timeout))
      break;
    sql_print_information("Retrying bind on TCP/IP port %u", port);
    this_wait= retry * retry / 3 + 1;
    sleep(this_wait);
  }
  freeaddrinfo(ai);
  if (ret < 0)
  {
    char buff[100];
    sprintf(buff, "Can't start server: Bind on TCP/IP port. Got error: %d",
            (int) socket_errno);
    sql_perror(buff);
    sql_print_error("Do you already have another mysqld server running on "
                    "port: %u ?", port);
    unireg_abort(1);
  }
  if (mysql_socket_listen(ip_sock,(int) back_log) < 0)
  {
    sql_perror("Can't start server: listen() on TCP/IP port");
    sql_print_error("listen() on TCP/IP failed with error %d",
                    socket_errno);
    unireg_abort(1);
  }

#ifdef FD_CLOEXEC
  (void) fcntl(mysql_socket_getfd(ip_sock), F_SETFD, FD_CLOEXEC);
#endif

  DBUG_RETURN(ip_sock);
}

static void network_init(void)
{
#ifdef HAVE_SYS_UN_H
  struct sockaddr_un	UNIXaddr;
  int	arg;
#endif
  DBUG_ENTER("network_init");

  if (MYSQL_CALLBACK_ELSE(thread_scheduler, init, (), 0))
    unireg_abort(1);			/* purecov: inspected */

  if (init_proxy_protocol_networks(my_proxy_protocol_networks))
    unireg_abort(1);

  set_ports();

  if (report_port == 0)
  {
    SYSVAR_AUTOSIZE(report_port, mysqld_port);
  }
#ifndef DBUG_OFF
  if (!opt_disable_networking)
    DBUG_ASSERT(report_port != 0);
#endif
  if (!opt_disable_networking && !opt_bootstrap)
  {
    if (mysqld_port)
      base_ip_sock= activate_tcp_port(mysqld_port);
    if (mysqld_extra_port)
      extra_ip_sock= activate_tcp_port(mysqld_extra_port);
  }

#if defined(HAVE_SYS_UN_H)
  /*
  ** Create the UNIX socket
  */
  if (mysqld_unix_port[0] && !opt_bootstrap)
  {
    size_t port_len;
    DBUG_PRINT("general",("UNIX Socket is %s",mysqld_unix_port));

    if ((port_len= strlen(mysqld_unix_port)) > sizeof(UNIXaddr.sun_path) - 1)
    {
      sql_print_error("The socket file path is too long (> %u): %s",
                      (uint) sizeof(UNIXaddr.sun_path) - 1, mysqld_unix_port);
      unireg_abort(1);
    }
    unix_sock= mysql_socket_socket(key_socket_unix, AF_UNIX, SOCK_STREAM, 0);
    if (mysql_socket_getfd(unix_sock) < 0)
    {
      sql_perror("Can't start server : UNIX Socket "); /* purecov: inspected */
      unireg_abort(1);				/* purecov: inspected */
    }

    mysql_socket_set_thread_owner(unix_sock);

    bzero((char*) &UNIXaddr, sizeof(UNIXaddr));
    UNIXaddr.sun_family = AF_UNIX;
    strmov(UNIXaddr.sun_path, mysqld_unix_port);
#if defined(__linux__)
    /* Abstract socket */
    if (mysqld_unix_port[0] == '@')
    {
      UNIXaddr.sun_path[0]= '\0';
      port_len+= offsetof(struct sockaddr_un, sun_path);
    }
    else
#endif
    {
      (void) unlink(mysqld_unix_port);
      port_len= sizeof(UNIXaddr);
    }
    arg= 1;
    (void) mysql_socket_setsockopt(unix_sock,SOL_SOCKET,SO_REUSEADDR,
                                   (char*)&arg, sizeof(arg));
    umask(0);
    if (mysql_socket_bind(unix_sock,
                          reinterpret_cast<struct sockaddr *>(&UNIXaddr),
                          port_len) < 0)
    {
      sql_perror("Can't start server : Bind on unix socket"); /* purecov: tested */
      sql_print_error("Do you already have another mysqld server running on socket: %s ?",mysqld_unix_port);
      unireg_abort(1);					/* purecov: tested */
    }
    umask(((~my_umask) & 0666));
#if defined(S_IFSOCK) && defined(SECURE_SOCKETS)
    (void) chmod(mysqld_unix_port,S_IFSOCK);	/* Fix solaris 2.6 bug */
#endif
    if (mysql_socket_listen(unix_sock,(int) back_log) < 0)
      sql_print_warning("listen() on Unix socket failed with error %d",
		      socket_errno);
#ifdef FD_CLOEXEC
    (void) fcntl(mysql_socket_getfd(unix_sock), F_SETFD, FD_CLOEXEC);
#endif
  }
#endif

#ifdef _WIN32
  network_init_win();
#endif

  DBUG_PRINT("info",("server started"));
  DBUG_VOID_RETURN;
}


/**
  Close a connection.

  @param thd        Thread handle.
  @param sql_errno  The error code to send before disconnect.

  @note
    For the connection that is doing shutdown, this is called twice
*/

void close_connection(THD *thd, uint sql_errno)
{
  int lvl= (thd->main_security_ctx.user ? 3 : 1);
  DBUG_ENTER("close_connection");

  if (sql_errno)
  {
    thd->protocol->net_send_error(thd, sql_errno, ER_DEFAULT(sql_errno), NULL);
    thd->print_aborted_warning(lvl, ER_DEFAULT(sql_errno));
  }
  else
    thd->print_aborted_warning(lvl, (thd->main_security_ctx.user ?
                                     "This connection closed normally" :
                                     "This connection closed normally without"
                                      " authentication"));

  thd->disconnect();

  MYSQL_CONNECTION_DONE((int) sql_errno, thd->thread_id);

  if (MYSQL_CONNECTION_DONE_ENABLED())
  {
    sleep(0); /* Workaround to avoid tailcall optimisation */
  }
  mysql_audit_notify_connection_disconnect(thd, sql_errno);
  DBUG_VOID_RETURN;
}


/** Called when mysqld is aborted with ^C */
/* ARGSUSED */
extern "C" sig_handler end_mysqld_signal(int sig __attribute__((unused)))
{
  DBUG_ENTER("end_mysqld_signal");
  /* Don't kill if signal thread is not running */
  if (signal_thread_in_use)
    break_connect_loop();                         // Take down mysqld nicely
  DBUG_VOID_RETURN;				/* purecov: deadcode */
}
#endif /* EMBEDDED_LIBRARY */


/*
  Unlink thd from global list of available connections

  SYNOPSIS
    unlink_thd()
    thd		 Thread handler
*/

void unlink_thd(THD *thd)
{
  DBUG_ENTER("unlink_thd");
  DBUG_PRINT("enter", ("thd: %p", thd));

  thd->cleanup();
  thd->add_status_to_global();
  server_threads.erase(thd);

#ifdef WITH_WSREP
  /*
    Do not decrement when its wsrep system thread. wsrep_applier is set for
    applier as well as rollbacker threads.
  */
  if (!thd->wsrep_applier)
#endif /* WITH_WSREP */
  --*thd->scheduler->connection_count;

  thd->free_connection();

  DBUG_VOID_RETURN;
}


/******************************************************************************
  Setup a signal thread with handles all signals.
  Because Linux doesn't support schemas use a mutex to check that
  the signal thread is ready before continuing
******************************************************************************/

#if defined(__WIN__)


/*
  On Windows, we use native SetConsoleCtrlHandler for handle events like Ctrl-C
  with graceful shutdown.
  Also, we do not use signal(), but SetUnhandledExceptionFilter instead - as it
  provides possibility to pass the exception to just-in-time debugger, collect
  dumps and potentially also the exception and thread context used to output
  callstack.
*/

static BOOL WINAPI console_event_handler( DWORD type ) 
{
  DBUG_ENTER("console_event_handler");
#ifndef EMBEDDED_LIBRARY
  if(type == CTRL_C_EVENT)
  {
     /*
       Do not shutdown before startup is finished and shutdown
       thread is initialized. Otherwise there is a race condition 
       between main thread doing initialization and CTRL-C thread doing
       cleanup, which can result into crash.
     */
#ifndef EMBEDDED_LIBRARY
     if(hEventShutdown)
       break_connect_loop();
     else
#endif
       sql_print_warning("CTRL-C ignored during startup");
     DBUG_RETURN(TRUE);
  }
#endif
  DBUG_RETURN(FALSE);
}




#ifdef DEBUG_UNHANDLED_EXCEPTION_FILTER
#define DEBUGGER_ATTACH_TIMEOUT 120
/*
  Wait for debugger to attach and break into debugger. If debugger is
  not attached, resume after timeout.
*/
static void wait_for_debugger(int timeout_sec)
{
   if(!IsDebuggerPresent())
   {
     int i;
     printf("Waiting for debugger to attach, pid=%u\n",GetCurrentProcessId());
     fflush(stdout);
     for(i= 0; i < timeout_sec; i++)
     {
       Sleep(1000);
       if(IsDebuggerPresent())
       {
         /* Break into debugger */
         __debugbreak();
         return;
       }
     }
     printf("pid=%u, debugger not attached after %d seconds, resuming\n",GetCurrentProcessId(),
       timeout_sec);
     fflush(stdout);
   }
}
#endif /* DEBUG_UNHANDLED_EXCEPTION_FILTER */

LONG WINAPI my_unhandler_exception_filter(EXCEPTION_POINTERS *ex_pointers)
{
   static BOOL first_time= TRUE;
   if(!first_time)
   {
     /*
       This routine can be called twice, typically
       when detaching in JIT debugger.
       Return EXCEPTION_EXECUTE_HANDLER to terminate process.
     */
     return EXCEPTION_EXECUTE_HANDLER;
   }
   first_time= FALSE;
#ifdef DEBUG_UNHANDLED_EXCEPTION_FILTER
   /*
    Unfortunately there is no clean way to debug unhandled exception filters,
    as debugger does not stop there(also documented in MSDN) 
    To overcome, one could put a MessageBox, but this will not work in service.
    Better solution is to print error message and sleep some minutes 
    until debugger is attached
  */
  wait_for_debugger(DEBUGGER_ATTACH_TIMEOUT);
#endif /* DEBUG_UNHANDLED_EXCEPTION_FILTER */
  __try
  {
    my_set_exception_pointers(ex_pointers);
    handle_fatal_signal(ex_pointers->ExceptionRecord->ExceptionCode);
  }
  __except(EXCEPTION_EXECUTE_HANDLER)
  {
    DWORD written;
    const char msg[] = "Got exception in exception handler!\n";
    WriteFile(GetStdHandle(STD_OUTPUT_HANDLE),msg, sizeof(msg)-1, 
      &written,NULL);
  }
  /*
    Return EXCEPTION_CONTINUE_SEARCH to give JIT debugger
    (drwtsn32 or vsjitdebugger) possibility to attach,
    if JIT debugger is configured.
    Windows Error reporting might generate a dump here.
  */
  return EXCEPTION_CONTINUE_SEARCH;
}


void init_signals(void)
{
  if(opt_console)
    SetConsoleCtrlHandler(console_event_handler,TRUE);

    /* Avoid MessageBox()es*/
  _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
  _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
  _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
  _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
  _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
  _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);

   /*
     Do not use SEM_NOGPFAULTERRORBOX in the following SetErrorMode (),
     because it would prevent JIT debugger and Windows error reporting
     from working. We need WER or JIT-debugging, since our own unhandled
     exception filter is not guaranteed to work in all situation
     (like heap corruption or stack overflow)
   */
  SetErrorMode(SetErrorMode(0) | SEM_FAILCRITICALERRORS
                               | SEM_NOOPENFILEERRORBOX);
  SetUnhandledExceptionFilter(my_unhandler_exception_filter);
}


static void start_signal_handler(void)
{
#ifndef EMBEDDED_LIBRARY
  // Save vm id of this process
  if (!opt_bootstrap)
    create_pid_file();
#endif /* EMBEDDED_LIBRARY */
}


static void check_data_home(const char *path)
{}

#endif /* __WIN__ */


#if BACKTRACE_DEMANGLE
#include <cxxabi.h>
extern "C" char *my_demangle(const char *mangled_name, int *status)
{
  return abi::__cxa_demangle(mangled_name, NULL, NULL, status);
}
#endif


#ifdef DBUG_ASSERT_AS_PRINTF
extern "C" void
mariadb_dbug_assert_failed(const char *assert_expr, const char *file,
                           unsigned long line)
{
  fprintf(stderr, "Warning: assertion failed: %s at %s line %lu\n",
          assert_expr, file, line);
  if (opt_stack_trace)
  {
    fprintf(stderr, "Attempting backtrace to find out the reason for the assert:\n");
    my_print_stacktrace(NULL, (ulong) my_thread_stack_size, 1);
  }
}
#endif /* DBUG_ASSERT_AS_PRINT */

#if !defined(__WIN__)
#ifndef SA_RESETHAND
#define SA_RESETHAND 0
#endif /* SA_RESETHAND */
#ifndef SA_NODEFER
#define SA_NODEFER 0
#endif /* SA_NODEFER */

#ifndef EMBEDDED_LIBRARY

void init_signals(void)
{
  sigset_t set;
  struct sigaction sa;
  DBUG_ENTER("init_signals");

  my_sigset(THR_SERVER_ALARM,print_signal_warning); // Should never be called!

  if (opt_stack_trace || (test_flags & TEST_CORE_ON_SIGNAL))
  {
    sa.sa_flags = SA_RESETHAND | SA_NODEFER;
    sigemptyset(&sa.sa_mask);
    sigprocmask(SIG_SETMASK,&sa.sa_mask,NULL);

#if defined(__amiga__)
    sa.sa_handler=(void(*)())handle_fatal_signal;
#else
    sa.sa_handler=handle_fatal_signal;
#endif
    sigaction(SIGSEGV, &sa, NULL);
    sigaction(SIGABRT, &sa, NULL);
#ifdef SIGBUS
    sigaction(SIGBUS, &sa, NULL);
#endif
    sigaction(SIGILL, &sa, NULL);
    sigaction(SIGFPE, &sa, NULL);
  }

#ifdef HAVE_GETRLIMIT
  if (test_flags & TEST_CORE_ON_SIGNAL)
  {
    /* Change limits so that we will get a core file */
    STRUCT_RLIMIT rl;
    rl.rlim_cur = rl.rlim_max = (rlim_t) RLIM_INFINITY;
    if (setrlimit(RLIMIT_CORE, &rl) && global_system_variables.log_warnings)
      sql_print_warning("setrlimit could not change the size of core files to 'infinity';  We may not be able to generate a core file on signals");
  }
#endif
  (void) sigemptyset(&set);
  my_sigset(SIGPIPE,SIG_IGN);
  sigaddset(&set,SIGPIPE);
#ifndef IGNORE_SIGHUP_SIGQUIT
  sigaddset(&set,SIGQUIT);
  sigaddset(&set,SIGHUP);
#endif
  sigaddset(&set,SIGTERM);

  /* Fix signals if blocked by parents (can happen on Mac OS X) */
  sigemptyset(&sa.sa_mask);
  sa.sa_flags = 0;
  sa.sa_handler = print_signal_warning;
  sigaction(SIGTERM, &sa, (struct sigaction*) 0);
  sa.sa_flags = 0;
  sa.sa_handler = print_signal_warning;
  sigaction(SIGHUP, &sa, (struct sigaction*) 0);
  sigaddset(&set,THR_SERVER_ALARM);
  if (test_flags & TEST_SIGINT)
  {
    /* Allow SIGINT to break mysqld. This is for debugging with --gdb */
    my_sigset(SIGINT, end_mysqld_signal);
    sigdelset(&set, SIGINT);
  }
  else
  {
    sigaddset(&set,SIGINT);
#ifdef SIGTSTP
    sigaddset(&set,SIGTSTP);
#endif
  }

  sigprocmask(SIG_SETMASK,&set,NULL);
  pthread_sigmask(SIG_SETMASK,&set,NULL);
  DBUG_VOID_RETURN;
}


static void start_signal_handler(void)
{
  int error;
  pthread_attr_t thr_attr;
  DBUG_ENTER("start_signal_handler");

  (void) pthread_attr_init(&thr_attr);
  pthread_attr_setscope(&thr_attr,PTHREAD_SCOPE_SYSTEM);
  (void) pthread_attr_setdetachstate(&thr_attr,PTHREAD_CREATE_DETACHED);
  (void) my_setstacksize(&thr_attr,my_thread_stack_size);

  mysql_mutex_lock(&LOCK_start_thread);
  if (unlikely((error= mysql_thread_create(key_thread_signal_hand,
                                           &signal_thread, &thr_attr,
                                           signal_hand, 0))))
  {
    sql_print_error("Can't create interrupt-thread (error %d, errno: %d)",
		    error,errno);
    exit(1);
  }
  mysql_cond_wait(&COND_start_thread, &LOCK_start_thread);
  mysql_mutex_unlock(&LOCK_start_thread);

  (void) pthread_attr_destroy(&thr_attr);
  DBUG_VOID_RETURN;
}


#if defined(USE_ONE_SIGNAL_HAND)
pthread_handler_t kill_server_thread(void *arg __attribute__((unused)))
{
  my_thread_init();				// Initialize new thread
  break_connect_loop();
  my_thread_end();
  pthread_exit(0);
  return 0;
}
#endif


/** This threads handles all signals and alarms. */
/* ARGSUSED */
pthread_handler_t signal_hand(void *arg __attribute__((unused)))
{
  sigset_t set;
  int sig;
  my_thread_init();				// Init new thread
  DBUG_ENTER("signal_hand");
  signal_thread_in_use= 1;

  /*
    Setup alarm handler
    This should actually be '+ max_number_of_slaves' instead of +10,
    but the +10 should be quite safe.
  */
  init_thr_alarm(thread_scheduler->max_threads + extra_max_connections +
		 global_system_variables.max_insert_delayed_threads + 10);
  if (test_flags & TEST_SIGINT)
  {
    /* Allow SIGINT to break mysqld. This is for debugging with --gdb */
    (void) sigemptyset(&set);
    (void) sigaddset(&set,SIGINT);
    (void) pthread_sigmask(SIG_UNBLOCK,&set,NULL);
  }
  (void) sigemptyset(&set);			// Setup up SIGINT for debug
#ifdef USE_ONE_SIGNAL_HAND
  (void) sigaddset(&set,THR_SERVER_ALARM);	// For alarms
#endif
#ifndef IGNORE_SIGHUP_SIGQUIT
  (void) sigaddset(&set,SIGQUIT);
  (void) sigaddset(&set,SIGHUP);
#endif
  (void) sigaddset(&set,SIGTERM);
  (void) sigaddset(&set,SIGTSTP);

  /* Save pid to this process (or thread on Linux) */
  if (!opt_bootstrap)
    create_pid_file();

  /*
    signal to start_signal_handler that we are ready
    This works by waiting for start_signal_handler to free mutex,
    after which we signal it that we are ready.
    At this point there is no other threads running, so there
    should not be any other mysql_cond_signal() calls.
  */
  mysql_mutex_lock(&LOCK_start_thread);
  mysql_cond_broadcast(&COND_start_thread);
  mysql_mutex_unlock(&LOCK_start_thread);

  (void) pthread_sigmask(SIG_BLOCK,&set,NULL);
  for (;;)
  {
    int error;
    int origin;

    while ((error= my_sigwait(&set, &sig, &origin)) == EINTR) /* no-op */;
    if (cleanup_done)
    {
      DBUG_PRINT("quit",("signal_handler: calling my_thread_end()"));
      my_thread_end();
      DBUG_LEAVE;                               // Must match DBUG_ENTER()
      signal_thread_in_use= 0;
      pthread_exit(0);				// Safety
      return 0;                                 // Avoid compiler warnings
    }
    switch (sig) {
    case SIGTERM:
    case SIGQUIT:
    case SIGKILL:
#ifdef EXTRA_DEBUG
      sql_print_information("Got signal %d to shutdown mysqld",sig);
#endif
      /* switch to the old log message processing */
      logger.set_handlers(LOG_FILE, global_system_variables.sql_log_slow ? LOG_FILE:LOG_NONE,
                          opt_log ? LOG_FILE:LOG_NONE);
      DBUG_PRINT("info",("Got signal: %d  abort_loop: %d",sig,abort_loop));
      if (!abort_loop)
      {
        /* Delete the instrumentation for the signal thread */
        PSI_CALL_delete_current_thread();
#ifdef USE_ONE_SIGNAL_HAND
	pthread_t tmp;
        if (unlikely((error= mysql_thread_create(0, /* Not instrumented */
                                                 &tmp, &connection_attrib,
                                                 kill_server_thread,
                                                 (void*) &sig))))
          sql_print_error("Can't create thread to kill server (errno= %d)",
                          error);
#else
        my_sigset(sig, SIG_IGN);
        break_connect_loop(); // MIT THREAD has a alarm thread
#endif
      }
      break;
    case SIGHUP:
      if (!abort_loop && origin != SI_KERNEL)
      {
        int not_used;
	mysql_print_status();		// Print some debug info
	reload_acl_and_cache((THD*) 0,
			     (REFRESH_LOG | REFRESH_TABLES | REFRESH_FAST |
			      REFRESH_GRANT |
			      REFRESH_THREADS | REFRESH_HOSTS),
			     (TABLE_LIST*) 0, &not_used); // Flush logs

        /* reenable logs after the options were reloaded */
        ulonglong fixed_log_output_options=
          log_output_options & LOG_NONE ? LOG_TABLE : log_output_options;

        logger.set_handlers(LOG_FILE, global_system_variables.sql_log_slow
                                      ? fixed_log_output_options : LOG_NONE,
                            opt_log ? fixed_log_output_options : LOG_NONE);
      }
      break;
#ifdef USE_ONE_SIGNAL_HAND
    case THR_SERVER_ALARM:
      process_alarm(sig);			// Trigger alarms.
      break;
#endif
    default:
#ifdef EXTRA_DEBUG
      sql_print_warning("Got signal: %d  error: %d",sig,error); /* purecov: tested */
#endif
      break;					/* purecov: tested */
    }
  }
  return(0);					/* purecov: deadcode */
}

static void check_data_home(const char *path)
{}

#endif /*!EMBEDDED_LIBRARY*/
#endif	/* __WIN__*/


/**
  All global error messages are sent here where the first one is stored
  for the client.
*/
/* ARGSUSED */
extern "C" void my_message_sql(uint error, const char *str, myf MyFlags);

void my_message_sql(uint error, const char *str, myf MyFlags)
{
  THD *thd= MyFlags & ME_ERROR_LOG_ONLY ? NULL : current_thd;
  Sql_condition::enum_warning_level level;
  sql_print_message_func func;
  DBUG_ENTER("my_message_sql");
  DBUG_PRINT("error", ("error: %u  message: '%s'  Flag: %lu", error, str,
                       MyFlags));

  DBUG_ASSERT(str != NULL);
  DBUG_ASSERT(error != 0);
  DBUG_ASSERT((MyFlags & ~(ME_BELL | ME_ERROR_LOG | ME_ERROR_LOG_ONLY |
                           ME_NOTE | ME_WARNING | ME_FATAL)) == 0);

  if (MyFlags & ME_NOTE)
  {
    level= Sql_condition::WARN_LEVEL_NOTE;
    func= sql_print_information;
  }
  else if (MyFlags & ME_WARNING)
  {
    level= Sql_condition::WARN_LEVEL_WARN;
    func= sql_print_warning;
  }
  else
  {
    level= Sql_condition::WARN_LEVEL_ERROR;
    func= sql_print_error;
  }

  if (likely(thd))
  {
    if (unlikely(MyFlags & ME_FATAL))
      thd->is_fatal_error= 1;
    (void) thd->raise_condition(error, NULL, level, str);
  }
  else
    mysql_audit_general(0, MYSQL_AUDIT_GENERAL_ERROR, error, str);

  /* When simulating OOM, skip writing to error log to avoid mtr errors */
  DBUG_EXECUTE_IF("simulate_out_of_memory", DBUG_VOID_RETURN;);

  if (unlikely(!thd) || thd->log_all_errors || (MyFlags & ME_ERROR_LOG))
    (*func)("%s: %s", my_progname_short, str); /* purecov: inspected */
  DBUG_VOID_RETURN;
}


extern "C" void *my_str_malloc_mysqld(size_t size);

void *my_str_malloc_mysqld(size_t size)
{
  return my_malloc(key_memory_my_str_malloc, size, MYF(MY_FAE));
}


#if 0
extern "C" void *my_str_realloc_mysqld(void *ptr, size_t size);
void *my_str_realloc_mysqld(void *ptr, size_t size)
{
  return my_realloc(key_memory_my_str_malloc, ptr, size, MYF(MY_FAE));
}
#endif

#include <mysqld_default_groups.h>

#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
static const int load_default_groups_sz=
sizeof(load_default_groups)/sizeof(load_default_groups[0]);
#endif


/**
  This function is used to check for stack overrun for pathological
  cases of  regular expressions and 'like' expressions.
*/
extern "C" int
check_enough_stack_size_slow()
{
  uchar stack_top;
  THD *my_thd= current_thd;
  if (my_thd != NULL)
    return check_stack_overrun(my_thd, STACK_MIN_SIZE * 2, &stack_top);
  return 0;
}


/*
  The call to current_thd in check_enough_stack_size_slow is quite expensive,
  so we try to avoid it for the normal cases.
  The size of  each stack frame for the wildcmp() routines is ~128 bytes,
  so checking  *every* recursive call is not necessary.
 */
extern "C" int
check_enough_stack_size(int recurse_level)
{
  if (recurse_level % 16 != 0)
    return 0;
  return check_enough_stack_size_slow();
}


static void init_libstrings()
{
#ifndef EMBEDDED_LIBRARY
  my_string_stack_guard= check_enough_stack_size;
#endif
}


/**
  Initialize one of the global date/time format variables.

  @param format_type		What kind of format should be supported
  @param var_ptr		Pointer to variable that should be updated

  @retval
    0 ok
  @retval
    1 error
*/

static bool init_global_datetime_format(timestamp_type format_type,
                                        DATE_TIME_FORMAT *format)
{
  /*
    Get command line option
    format->format.str is already set by my_getopt
  */
  format->format.length= strlen(format->format.str);

  if (parse_date_time_format(format_type, format))
  {
    fprintf(stderr, "Wrong date/time format specifier: %s\n",
            format->format.str);
    return true;
  }
  return false;
}

#define COM_STATUS(X)  (void*) offsetof(STATUS_VAR, X), SHOW_LONG_STATUS
#define STMT_STATUS(X) COM_STATUS(com_stat[(uint) X])

SHOW_VAR com_status_vars[]= {
  {"admin_commands",       COM_STATUS(com_other)},
  {"alter_db",             STMT_STATUS(SQLCOM_ALTER_DB)},
  {"alter_db_upgrade",     STMT_STATUS(SQLCOM_ALTER_DB_UPGRADE)},
  {"alter_event",          STMT_STATUS(SQLCOM_ALTER_EVENT)},
  {"alter_function",       STMT_STATUS(SQLCOM_ALTER_FUNCTION)},
  {"alter_procedure",      STMT_STATUS(SQLCOM_ALTER_PROCEDURE)},
  {"alter_server",         STMT_STATUS(SQLCOM_ALTER_SERVER)},
  {"alter_sequence",       STMT_STATUS(SQLCOM_ALTER_SEQUENCE)},
  {"alter_table",          STMT_STATUS(SQLCOM_ALTER_TABLE)},
  {"alter_tablespace",     STMT_STATUS(SQLCOM_ALTER_TABLESPACE)},
  {"alter_user",           STMT_STATUS(SQLCOM_ALTER_USER)},
  {"analyze",              STMT_STATUS(SQLCOM_ANALYZE)},
  {"assign_to_keycache",   STMT_STATUS(SQLCOM_ASSIGN_TO_KEYCACHE)},
  {"backup",               STMT_STATUS(SQLCOM_BACKUP)},
  {"backup_lock",          STMT_STATUS(SQLCOM_BACKUP_LOCK)},
  {"begin",                STMT_STATUS(SQLCOM_BEGIN)},
  {"binlog",               STMT_STATUS(SQLCOM_BINLOG_BASE64_EVENT)},
  {"call_procedure",       STMT_STATUS(SQLCOM_CALL)},
  {"change_db",            STMT_STATUS(SQLCOM_CHANGE_DB)},
  {"change_master",        STMT_STATUS(SQLCOM_CHANGE_MASTER)},
  {"check",                STMT_STATUS(SQLCOM_CHECK)},
  {"checksum",             STMT_STATUS(SQLCOM_CHECKSUM)},
  {"commit",               STMT_STATUS(SQLCOM_COMMIT)},
  {"compound_sql",         STMT_STATUS(SQLCOM_COMPOUND)},
  {"create_db",            STMT_STATUS(SQLCOM_CREATE_DB)},
  {"create_event",         STMT_STATUS(SQLCOM_CREATE_EVENT)},
  {"create_function",      STMT_STATUS(SQLCOM_CREATE_SPFUNCTION)},
  {"create_index",         STMT_STATUS(SQLCOM_CREATE_INDEX)},
  {"create_package",       STMT_STATUS(SQLCOM_CREATE_PACKAGE)},
  {"create_package_body",  STMT_STATUS(SQLCOM_CREATE_PACKAGE_BODY)},
  {"create_procedure",     STMT_STATUS(SQLCOM_CREATE_PROCEDURE)},
  {"create_role",          STMT_STATUS(SQLCOM_CREATE_ROLE)},
  {"create_sequence",      STMT_STATUS(SQLCOM_CREATE_SEQUENCE)},
  {"create_server",        STMT_STATUS(SQLCOM_CREATE_SERVER)},
  {"create_table",         STMT_STATUS(SQLCOM_CREATE_TABLE)},
  {"create_temporary_table", COM_STATUS(com_create_tmp_table)},
  {"create_trigger",       STMT_STATUS(SQLCOM_CREATE_TRIGGER)},
  {"create_udf",           STMT_STATUS(SQLCOM_CREATE_FUNCTION)},
  {"create_user",          STMT_STATUS(SQLCOM_CREATE_USER)},
  {"create_view",          STMT_STATUS(SQLCOM_CREATE_VIEW)},
  {"dealloc_sql",          STMT_STATUS(SQLCOM_DEALLOCATE_PREPARE)},
  {"delete",               STMT_STATUS(SQLCOM_DELETE)},
  {"delete_multi",         STMT_STATUS(SQLCOM_DELETE_MULTI)},
  {"do",                   STMT_STATUS(SQLCOM_DO)},
  {"drop_db",              STMT_STATUS(SQLCOM_DROP_DB)},
  {"drop_event",           STMT_STATUS(SQLCOM_DROP_EVENT)},
  {"drop_function",        STMT_STATUS(SQLCOM_DROP_FUNCTION)},
  {"drop_index",           STMT_STATUS(SQLCOM_DROP_INDEX)},
  {"drop_procedure",       STMT_STATUS(SQLCOM_DROP_PROCEDURE)},
  {"drop_package",         STMT_STATUS(SQLCOM_DROP_PACKAGE)},
  {"drop_package_body",    STMT_STATUS(SQLCOM_DROP_PACKAGE_BODY)},
  {"drop_role",            STMT_STATUS(SQLCOM_DROP_ROLE)},
  {"drop_server",          STMT_STATUS(SQLCOM_DROP_SERVER)},
  {"drop_sequence",        STMT_STATUS(SQLCOM_DROP_SEQUENCE)},
  {"drop_table",           STMT_STATUS(SQLCOM_DROP_TABLE)},
  {"drop_temporary_table", COM_STATUS(com_drop_tmp_table)},
  {"drop_trigger",         STMT_STATUS(SQLCOM_DROP_TRIGGER)},
  {"drop_user",            STMT_STATUS(SQLCOM_DROP_USER)},
  {"drop_view",            STMT_STATUS(SQLCOM_DROP_VIEW)},
  {"empty_query",          STMT_STATUS(SQLCOM_EMPTY_QUERY)},
  {"execute_immediate",    STMT_STATUS(SQLCOM_EXECUTE_IMMEDIATE)},
  {"execute_sql",          STMT_STATUS(SQLCOM_EXECUTE)},
  {"flush",                STMT_STATUS(SQLCOM_FLUSH)},
  {"get_diagnostics",      STMT_STATUS(SQLCOM_GET_DIAGNOSTICS)},
  {"grant",                STMT_STATUS(SQLCOM_GRANT)},
  {"grant_role",           STMT_STATUS(SQLCOM_GRANT_ROLE)},
  {"ha_close",             STMT_STATUS(SQLCOM_HA_CLOSE)},
  {"ha_open",              STMT_STATUS(SQLCOM_HA_OPEN)},
  {"ha_read",              STMT_STATUS(SQLCOM_HA_READ)},
  {"help",                 STMT_STATUS(SQLCOM_HELP)},
  {"insert",               STMT_STATUS(SQLCOM_INSERT)},
  {"insert_select",        STMT_STATUS(SQLCOM_INSERT_SELECT)},
  {"install_plugin",       STMT_STATUS(SQLCOM_INSTALL_PLUGIN)},
  {"kill",                 STMT_STATUS(SQLCOM_KILL)},
  {"load",                 STMT_STATUS(SQLCOM_LOAD)},
  {"lock_tables",          STMT_STATUS(SQLCOM_LOCK_TABLES)},
  {"multi",                COM_STATUS(com_multi)},
  {"optimize",             STMT_STATUS(SQLCOM_OPTIMIZE)},
  {"preload_keys",         STMT_STATUS(SQLCOM_PRELOAD_KEYS)},
  {"prepare_sql",          STMT_STATUS(SQLCOM_PREPARE)},
  {"purge",                STMT_STATUS(SQLCOM_PURGE)},
  {"purge_before_date",    STMT_STATUS(SQLCOM_PURGE_BEFORE)},
  {"release_savepoint",    STMT_STATUS(SQLCOM_RELEASE_SAVEPOINT)},
  {"rename_table",         STMT_STATUS(SQLCOM_RENAME_TABLE)},
  {"rename_user",          STMT_STATUS(SQLCOM_RENAME_USER)},
  {"repair",               STMT_STATUS(SQLCOM_REPAIR)},
  {"replace",              STMT_STATUS(SQLCOM_REPLACE)},
  {"replace_select",       STMT_STATUS(SQLCOM_REPLACE_SELECT)},
  {"reset",                STMT_STATUS(SQLCOM_RESET)},
  {"resignal",             STMT_STATUS(SQLCOM_RESIGNAL)},
  {"revoke",               STMT_STATUS(SQLCOM_REVOKE)},
  {"revoke_all",           STMT_STATUS(SQLCOM_REVOKE_ALL)},
  {"revoke_role",          STMT_STATUS(SQLCOM_REVOKE_ROLE)},
  {"rollback",             STMT_STATUS(SQLCOM_ROLLBACK)},
  {"rollback_to_savepoint",STMT_STATUS(SQLCOM_ROLLBACK_TO_SAVEPOINT)},
  {"savepoint",            STMT_STATUS(SQLCOM_SAVEPOINT)},
  {"select",               STMT_STATUS(SQLCOM_SELECT)},
  {"set_option",           STMT_STATUS(SQLCOM_SET_OPTION)},
  {"show_authors",         STMT_STATUS(SQLCOM_SHOW_AUTHORS)},
  {"show_binlog_events",   STMT_STATUS(SQLCOM_SHOW_BINLOG_EVENTS)},
  {"show_binlogs",         STMT_STATUS(SQLCOM_SHOW_BINLOGS)},
  {"show_charsets",        STMT_STATUS(SQLCOM_SHOW_CHARSETS)},
  {"show_collations",      STMT_STATUS(SQLCOM_SHOW_COLLATIONS)},
  {"show_contributors",    STMT_STATUS(SQLCOM_SHOW_CONTRIBUTORS)},
  {"show_create_db",       STMT_STATUS(SQLCOM_SHOW_CREATE_DB)},
  {"show_create_event",    STMT_STATUS(SQLCOM_SHOW_CREATE_EVENT)},
  {"show_create_func",     STMT_STATUS(SQLCOM_SHOW_CREATE_FUNC)},
  {"show_create_package",  STMT_STATUS(SQLCOM_SHOW_CREATE_PACKAGE)},
  {"show_create_package_body",STMT_STATUS(SQLCOM_SHOW_CREATE_PACKAGE_BODY)},
  {"show_create_proc",     STMT_STATUS(SQLCOM_SHOW_CREATE_PROC)},
  {"show_create_table",    STMT_STATUS(SQLCOM_SHOW_CREATE)},
  {"show_create_trigger",  STMT_STATUS(SQLCOM_SHOW_CREATE_TRIGGER)},
  {"show_create_user",     STMT_STATUS(SQLCOM_SHOW_CREATE_USER)},
  {"show_databases",       STMT_STATUS(SQLCOM_SHOW_DATABASES)},
  {"show_engine_logs",     STMT_STATUS(SQLCOM_SHOW_ENGINE_LOGS)},
  {"show_engine_mutex",    STMT_STATUS(SQLCOM_SHOW_ENGINE_MUTEX)},
  {"show_engine_status",   STMT_STATUS(SQLCOM_SHOW_ENGINE_STATUS)},
  {"show_errors",          STMT_STATUS(SQLCOM_SHOW_ERRORS)},
  {"show_events",          STMT_STATUS(SQLCOM_SHOW_EVENTS)},
  {"show_explain",         STMT_STATUS(SQLCOM_SHOW_EXPLAIN)},
  {"show_fields",          STMT_STATUS(SQLCOM_SHOW_FIELDS)},
#ifndef DBUG_OFF
  {"show_function_code",   STMT_STATUS(SQLCOM_SHOW_FUNC_CODE)},
#endif
  {"show_function_status", STMT_STATUS(SQLCOM_SHOW_STATUS_FUNC)},
  {"show_generic",         STMT_STATUS(SQLCOM_SHOW_GENERIC)},
  {"show_grants",          STMT_STATUS(SQLCOM_SHOW_GRANTS)},
  {"show_keys",            STMT_STATUS(SQLCOM_SHOW_KEYS)},
  {"show_binlog_status",   STMT_STATUS(SQLCOM_SHOW_BINLOG_STAT)},
  {"show_open_tables",     STMT_STATUS(SQLCOM_SHOW_OPEN_TABLES)},
  {"show_package_status",  STMT_STATUS(SQLCOM_SHOW_STATUS_PACKAGE)},
#ifndef DBUG_OFF
  {"show_package_body_code",   STMT_STATUS(SQLCOM_SHOW_PACKAGE_BODY_CODE)},
#endif
  {"show_package_body_status", STMT_STATUS(SQLCOM_SHOW_STATUS_PACKAGE_BODY)},
  {"show_plugins",         STMT_STATUS(SQLCOM_SHOW_PLUGINS)},
  {"show_privileges",      STMT_STATUS(SQLCOM_SHOW_PRIVILEGES)},
#ifndef DBUG_OFF
  {"show_procedure_code",  STMT_STATUS(SQLCOM_SHOW_PROC_CODE)},
#endif
  {"show_procedure_status",STMT_STATUS(SQLCOM_SHOW_STATUS_PROC)},
  {"show_processlist",     STMT_STATUS(SQLCOM_SHOW_PROCESSLIST)},
  {"show_profile",         STMT_STATUS(SQLCOM_SHOW_PROFILE)},
  {"show_profiles",        STMT_STATUS(SQLCOM_SHOW_PROFILES)},
  {"show_relaylog_events", STMT_STATUS(SQLCOM_SHOW_RELAYLOG_EVENTS)},
  {"show_slave_hosts",     STMT_STATUS(SQLCOM_SHOW_SLAVE_HOSTS)},
  {"show_slave_status",    STMT_STATUS(SQLCOM_SHOW_SLAVE_STAT)},
  {"show_status",          STMT_STATUS(SQLCOM_SHOW_STATUS)},
  {"show_storage_engines", STMT_STATUS(SQLCOM_SHOW_STORAGE_ENGINES)},
  {"show_table_status",    STMT_STATUS(SQLCOM_SHOW_TABLE_STATUS)},
  {"show_tables",          STMT_STATUS(SQLCOM_SHOW_TABLES)},
  {"show_triggers",        STMT_STATUS(SQLCOM_SHOW_TRIGGERS)},
  {"show_variables",       STMT_STATUS(SQLCOM_SHOW_VARIABLES)},
  {"show_warnings",        STMT_STATUS(SQLCOM_SHOW_WARNS)},
  {"shutdown",             STMT_STATUS(SQLCOM_SHUTDOWN)},
  {"signal",               STMT_STATUS(SQLCOM_SIGNAL)},
  {"start_all_slaves",     STMT_STATUS(SQLCOM_SLAVE_ALL_START)},
  {"start_slave",          STMT_STATUS(SQLCOM_SLAVE_START)},
  {"stmt_close",           COM_STATUS(com_stmt_close)},
  {"stmt_execute",         COM_STATUS(com_stmt_execute)},
  {"stmt_fetch",           COM_STATUS(com_stmt_fetch)},
  {"stmt_prepare",         COM_STATUS(com_stmt_prepare)},
  {"stmt_reprepare",       COM_STATUS(com_stmt_reprepare)},
  {"stmt_reset",           COM_STATUS(com_stmt_reset)},
  {"stmt_send_long_data",  COM_STATUS(com_stmt_send_long_data)},
  {"stop_all_slaves",      STMT_STATUS(SQLCOM_SLAVE_ALL_STOP)},
  {"stop_slave",           STMT_STATUS(SQLCOM_SLAVE_STOP)},
  {"truncate",             STMT_STATUS(SQLCOM_TRUNCATE)},
  {"uninstall_plugin",     STMT_STATUS(SQLCOM_UNINSTALL_PLUGIN)},
  {"unlock_tables",        STMT_STATUS(SQLCOM_UNLOCK_TABLES)},
  {"update",               STMT_STATUS(SQLCOM_UPDATE)},
  {"update_multi",         STMT_STATUS(SQLCOM_UPDATE_MULTI)},
  {"xa_commit",            STMT_STATUS(SQLCOM_XA_COMMIT)},
  {"xa_end",               STMT_STATUS(SQLCOM_XA_END)},
  {"xa_prepare",           STMT_STATUS(SQLCOM_XA_PREPARE)},
  {"xa_recover",           STMT_STATUS(SQLCOM_XA_RECOVER)},
  {"xa_rollback",          STMT_STATUS(SQLCOM_XA_ROLLBACK)},
  {"xa_start",             STMT_STATUS(SQLCOM_XA_START)},
  {NullS, NullS, SHOW_LONG}
};


#ifdef HAVE_PSI_STATEMENT_INTERFACE
PSI_statement_info sql_statement_info[(uint) SQLCOM_END + 1];
PSI_statement_info com_statement_info[(uint) COM_END + 1];

/**
  Initialize the command names array.
  Since we do not want to maintain a separate array,
  this is populated from data mined in com_status_vars,
  which already has one name for each command.
*/
void init_sql_statement_info()
{
  size_t first_com= offsetof(STATUS_VAR, com_stat[0]);
  size_t last_com=  offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_END]);
  int record_size= offsetof(STATUS_VAR, com_stat[1])
                   - offsetof(STATUS_VAR, com_stat[0]);
  size_t ptr;
  uint i;
  uint com_index;

  static const char* dummy= "";
  for (i= 0; i < ((uint) SQLCOM_END + 1); i++)
  {
    sql_statement_info[i].m_name= dummy;
    sql_statement_info[i].m_flags= 0;
  }

  SHOW_VAR *var= &com_status_vars[0];
  while (var->name != NULL)
  {
    ptr= (size_t)(var->value);
    if ((first_com <= ptr) && (ptr < last_com))
    {
      com_index= ((int)(ptr - first_com))/record_size;
      DBUG_ASSERT(com_index < (uint) SQLCOM_END);
      sql_statement_info[com_index].m_name= var->name;
    }
    var++;
  }

  DBUG_ASSERT(strcmp(sql_statement_info[(uint) SQLCOM_SELECT].m_name, "select") == 0);
  DBUG_ASSERT(strcmp(sql_statement_info[(uint) SQLCOM_SIGNAL].m_name, "signal") == 0);

  sql_statement_info[(uint) SQLCOM_END].m_name= "error";
}

void init_com_statement_info()
{
  uint index;

  for (index= 0; index < (uint) COM_END + 1; index++)
  {
    com_statement_info[index].m_name= command_name[index].str;
    com_statement_info[index].m_flags= 0;
  }

  /* "statement/abstract/query" can mutate into "statement/sql/..." */
  com_statement_info[(uint) COM_QUERY].m_flags= PSI_FLAG_MUTABLE;
}
#endif


#ifdef SAFEMALLOC
/*
  Return the id for the current THD, to allow safemalloc to associate
  the memory with the right id.
*/

extern "C" my_thread_id mariadb_dbug_id()
{
  THD *thd;
  if ((thd= current_thd) && thd->thread_dbug_id)
  {
    return thd->thread_dbug_id;
  }
  return my_thread_dbug_id();
}
#endif /* SAFEMALLOC */

/* Thread Mem Usage By P.Linux */
extern "C" {
static void my_malloc_size_cb_func(long long size, my_bool is_thread_specific)
{
  THD *thd= current_thd;

  /*
    When thread specific is set, both mysqld_server_initialized and thd
    must be set, and we check that with DBUG_ASSERT.

    However, do not crash, if current_thd is NULL, in release version.
  */
  DBUG_ASSERT(!is_thread_specific || (mysqld_server_initialized && thd));

  if (is_thread_specific && likely(thd))  /* If thread specific memory */
  {
    DBUG_PRINT("info", ("thd memory_used: %lld  size: %lld",
                        (longlong) thd->status_var.local_memory_used,
                        size));
    thd->status_var.local_memory_used+= size;
    set_if_bigger(thd->status_var.max_local_memory_used,
                  thd->status_var.local_memory_used);
    if (size > 0 &&
        thd->status_var.local_memory_used > (int64)thd->variables.max_mem_used &&
        likely(!thd->killed) && !thd->get_stmt_da()->is_set())
    {
      /* Ensure we don't get called here again */
      char buf[50], *buf2;
      thd->set_killed(KILL_QUERY);
      my_snprintf(buf, sizeof(buf), "--max-thread-mem-used=%llu",
                  thd->variables.max_mem_used);
      if ((buf2= (char*) thd->alloc(256)))
      {
        my_snprintf(buf2, 256, ER_THD(thd, ER_OPTION_PREVENTS_STATEMENT), buf);
        thd->set_killed(KILL_QUERY, ER_OPTION_PREVENTS_STATEMENT, buf2);
      }
    }
    DBUG_ASSERT((longlong) thd->status_var.local_memory_used >= 0 ||
                !debug_assert_on_not_freed_memory);
  }
  else if (likely(thd))
  {
    DBUG_PRINT("info", ("global thd memory_used: %lld  size: %lld",
                        (longlong) thd->status_var.global_memory_used, size));
    thd->status_var.global_memory_used+= size;
  }
  else
    update_global_memory_status(size);
}

int json_escape_string(const char *str,const char *str_end,
                       char *json, char *json_end)
{
  return json_escape(system_charset_info,
                     (const uchar *) str, (const uchar *) str_end,
                     &my_charset_utf8mb4_bin,
                     (uchar *) json, (uchar *) json_end);
}


int json_unescape_json(const char *json_str, const char *json_end,
                       char *res, char *res_end)
{
  return json_unescape(&my_charset_utf8mb4_bin,
                       (const uchar *) json_str, (const uchar *) json_end,
                       system_charset_info, (uchar *) res, (uchar *) res_end);
}

} /*extern "C"*/


/**
  Create a replication file name or base for file names.

  @param[in] opt Value of option, or NULL
  @param[in] def Default value if option value is not set.
  @param[in] ext Extension to use for the path

  @returns Pointer to string containing the full file path, or NULL if
  it was not possible to create the path.
 */
static const char *rpl_make_log_name(PSI_memory_key key, const char *opt,
                                     const char *def, const char *ext)
{
  DBUG_ENTER("rpl_make_log_name");
  DBUG_PRINT("enter", ("opt: %s, def: %s, ext: %s", opt ? opt : "(null)",
                       def, ext));
  char buff[FN_REFLEN];
  const char *base= opt ? opt : def;
  unsigned int options=
    MY_REPLACE_EXT | MY_UNPACK_FILENAME | MY_SAFE_PATH;

  /* mysql_real_data_home_ptr  may be null if no value of datadir has been
     specified through command-line or througha cnf file. If that is the
     case we make mysql_real_data_home_ptr point to mysql_real_data_home
     which, in that case holds the default path for data-dir.
  */
  if(mysql_real_data_home_ptr == NULL)
    mysql_real_data_home_ptr= mysql_real_data_home;

  if (fn_format(buff, base, mysql_real_data_home_ptr, ext, options))
    DBUG_RETURN(my_strdup(key, buff, MYF(MY_WME)));
  else
    DBUG_RETURN(NULL);
}

/* We have to setup my_malloc_size_cb_func early to catch all mallocs */

static int init_early_variables()
{
  set_current_thd(0);
  set_malloc_size_cb(my_malloc_size_cb_func);
  global_status_var.global_memory_used= 0;
  init_alloc_root(PSI_NOT_INSTRUMENTED, &startup_root, 1024, 0, MYF(0));
  return 0;
}

#ifdef _WIN32
static void get_win_tzname(char* buf, size_t size)
{
  static struct
  {
    const wchar_t* windows_name;
    const char*  tzdb_name;
  }
  tz_data[] =
  {
#include "win_tzname_data.h"
    {0,0}
  };
  DYNAMIC_TIME_ZONE_INFORMATION  tzinfo;
  if (GetDynamicTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_INVALID)
  {
    strncpy(buf, "unknown", size);
    return;
  }

  for (size_t i= 0; tz_data[i].windows_name; i++)
  {
    if (wcscmp(tzinfo.TimeZoneKeyName, tz_data[i].windows_name) == 0)
    {
      strncpy(buf, tz_data[i].tzdb_name, size);
      return;
    }
  }
  wcstombs(buf, tzinfo.TimeZoneKeyName, size);
  buf[size-1]= 0;
  return;
}
#endif

static int init_common_variables()
{
  umask(((~my_umask) & 0666));
  connection_errors_select= 0;
  connection_errors_accept= 0;
  connection_errors_tcpwrap= 0;
  connection_errors_internal= 0;
  connection_errors_max_connection= 0;
  connection_errors_peer_addr= 0;
  my_decimal_set_zero(&decimal_zero); // set decimal_zero constant;

  init_libstrings();
  tzset();			// Set tzname

#ifdef SAFEMALLOC
  sf_malloc_dbug_id= mariadb_dbug_id;
#endif /* SAFEMALLOC */
#ifdef DBUG_ASSERT_AS_PRINTF
  my_dbug_assert_failed= mariadb_dbug_assert_failed;
#endif /* DBUG_ASSERT_AS_PRINTF */

  if (!(type_handler_data= new Type_handler_data) ||
      type_handler_data->init())
  {
    sql_perror("Could not allocate type_handler_data");
    return 1;
  }

  max_system_variables.pseudo_thread_id= ~(my_thread_id) 0;
  server_start_time= flush_status_time= my_time(0);
  my_disable_copystat_in_redel= 1;

  global_rpl_filter= new Rpl_filter;
  binlog_filter= new Rpl_filter;
  if (!global_rpl_filter || !binlog_filter)
  {
    sql_perror("Could not allocate replication and binlog filters");
    exit(1);
  }

#ifdef HAVE_OPENSSL
  if (check_openssl_compatibility())
  {
    sql_print_error("Incompatible OpenSSL version. Cannot continue...");
    exit(1);
  }
#endif

  if (init_thread_environment() || mysql_init_variables())
    exit(1);

  if (ignore_db_dirs_init())
    exit(1);

#ifdef _WIN32
  get_win_tzname(system_time_zone, sizeof(system_time_zone));
#elif defined(HAVE_TZNAME)
  struct tm tm_tmp;
  localtime_r(&server_start_time,&tm_tmp);
  const char *tz_name=  tzname[tm_tmp.tm_isdst != 0 ? 1 : 0];
  strmake_buf(system_time_zone, tz_name);
#endif /* HAVE_TZNAME */

  /*
    We set SYSTEM time zone as reasonable default and
    also for failure of my_tz_init() and bootstrap mode.
    If user explicitly set time zone with --default-time-zone
    option we will change this value in my_tz_init().
  */
  global_system_variables.time_zone= my_tz_SYSTEM;

#ifdef HAVE_PSI_INTERFACE
  /*
    Complete the mysql_bin_log initialization.
    Instrumentation keys are known only after the performance schema
    initialization, and can not be set in the MYSQL_BIN_LOG
    constructor (called before main()).
  */
  mysql_bin_log.set_psi_keys(key_BINLOG_LOCK_index,
                             key_BINLOG_COND_relay_log_updated,
                             key_BINLOG_COND_bin_log_updated,
                             key_file_binlog,
                             key_file_binlog_cache,
                             key_file_binlog_index,
                             key_file_binlog_index_cache,
                             key_BINLOG_COND_queue_busy,
                             key_LOCK_binlog_end_pos);
#endif

  /*
    Init mutexes for the global MYSQL_BIN_LOG objects.
    As safe_mutex depends on what MY_INIT() does, we can't init the mutexes of
    global MYSQL_BIN_LOGs in their constructors, because then they would be
    inited before MY_INIT(). So we do it here.
  */
  mysql_bin_log.init_pthread_objects();

  /* TODO: remove this when my_time_t is 64 bit compatible */
  if (!IS_TIME_T_VALID_FOR_TIMESTAMP(server_start_time))
  {
    sql_print_error("This MySQL server doesn't support dates later than 2038");
    exit(1);
  }

  opt_log_basename= const_cast<char *>("mysql");

  if (gethostname(glob_hostname,sizeof(glob_hostname)) < 0)
  {
    /*
      Get hostname of computer (used by 'show variables') and as default
      basename for the pid file if --log-basename is not given.
    */
    strmake(glob_hostname, STRING_WITH_LEN("localhost"));
    sql_print_warning("gethostname failed, using '%s' as hostname",
                        glob_hostname);
  }
  else if (is_filename_allowed(glob_hostname, strlen(glob_hostname), FALSE))
    opt_log_basename= glob_hostname;

  strmake(pidfile_name, opt_log_basename, sizeof(pidfile_name)-5);
  strmov(fn_ext(pidfile_name),".pid");		// Add proper extension
  SYSVAR_AUTOSIZE(pidfile_name_ptr, pidfile_name);
  set_sys_var_value_origin(&opt_tc_log_size, sys_var::AUTO);

  /*
    The default-storage-engine entry in my_long_options should have a
    non-null default value. It was earlier intialized as
    (longlong)"MyISAM" in my_long_options but this triggered a
    compiler error in the Sun Studio 12 compiler. As a work-around we
    set the def_value member to 0 in my_long_options and initialize it
    to the correct value here.

    From MySQL 5.5 onwards, the default storage engine is InnoDB
    (except in the embedded server, where the default continues to
    be MyISAM)
  */
#if defined(WITH_INNOBASE_STORAGE_ENGINE)
  default_storage_engine= const_cast<char *>("InnoDB");
#else
  default_storage_engine= const_cast<char *>("MyISAM");
#endif
  default_tmp_storage_engine= NULL;
  gtid_pos_auto_engines= const_cast<char *>("");

  /*
    Add server status variables to the dynamic list of
    status variables that is shown by SHOW STATUS.
    Later, in plugin_init, and mysql_install_plugin
    new entries could be added to that list.
  */
  if (add_status_vars(status_vars))
    exit(1); // an error was already reported

#ifndef DBUG_OFF
  /*
    We have few debug-only commands in com_status_vars, only visible in debug
    builds. for simplicity we enable the assert only in debug builds

    There are 10 Com_ variables which don't have corresponding SQLCOM_ values:
    (TODO strictly speaking they shouldn't be here, should not have Com_ prefix
    that is. Perhaps Stmt_ ? Comstmt_ ? Prepstmt_ ?)

      Com_admin_commands         => com_other
      Com_create_temporary_table => com_create_tmp_table
      Com_drop_temporary_table   => com_drop_tmp_table
      Com_stmt_close             => com_stmt_close
      Com_stmt_execute           => com_stmt_execute
      Com_stmt_fetch             => com_stmt_fetch
      Com_stmt_prepare           => com_stmt_prepare
      Com_stmt_reprepare         => com_stmt_reprepare
      Com_stmt_reset             => com_stmt_reset
      Com_stmt_send_long_data    => com_stmt_send_long_data

    With this correction the number of Com_ variables (number of elements in
    the array, excluding the last element - terminator) must match the number
    of SQLCOM_ constants.
  */
  compile_time_assert(sizeof(com_status_vars)/sizeof(com_status_vars[0]) - 1 ==
                     SQLCOM_END + 11);
#endif

  if (get_options(&remaining_argc, &remaining_argv))
    exit(1);
  if (IS_SYSVAR_AUTOSIZE(&server_version_ptr))
    set_server_version(server_version, sizeof(server_version));

  mysql_real_data_home_len= uint(strlen(mysql_real_data_home));

  if (!opt_abort)
  {
    if (IS_SYSVAR_AUTOSIZE(&server_version_ptr))
      sql_print_information("%s (mysqld %s) starting as process %lu ...",
                            my_progname, server_version, (ulong) getpid());
    else
    {
      char real_server_version[SERVER_VERSION_LENGTH];
      set_server_version(real_server_version, sizeof(real_server_version));
      sql_print_information("%s (mysqld %s as %s) starting as process %lu ...",
                            my_progname, real_server_version, server_version,
                            (ulong) getpid());
    }
  }

  sf_leaking_memory= 0; // no memory leaks from now on

#ifndef EMBEDDED_LIBRARY
  if (opt_abort && !opt_verbose)
    unireg_abort(0);
#endif /*!EMBEDDED_LIBRARY*/

  DBUG_PRINT("info",("%s  Ver %s for %s on %s\n",my_progname,
		     server_version, SYSTEM_TYPE,MACHINE_TYPE));

  /* Initialize large page size */
  if (opt_large_pages)
  {
    DBUG_PRINT("info", ("Large page set"));
    if (my_init_large_pages(opt_super_large_pages))
    {
      return 1;
    }
  }

#if defined(HAVE_POOL_OF_THREADS)
  if (IS_SYSVAR_AUTOSIZE(&threadpool_size))
    SYSVAR_AUTOSIZE(threadpool_size, my_getncpus());
#endif

  /* connections and databases needs lots of files */
  {
    uint files, wanted_files, max_open_files, min_tc_size, extra_files,
      min_connections;
    ulong org_max_connections, org_tc_size;

    /* Number of files reserved for temporary files */
    extra_files= 30;
    min_connections= 10;
    /* MyISAM requires two file handles per table. */
    wanted_files= (extra_files + max_connections + extra_max_connections +
                   tc_size * 2 * tc_instances);
#if defined(HAVE_POOL_OF_THREADS) && !defined(__WIN__)
    // add epoll or kevent fd for each threadpool group, in case pool of threads is used
    wanted_files+= (thread_handling > SCHEDULER_NO_THREADS) ? 0 : threadpool_size;
#endif

    min_tc_size= MY_MIN(tc_size, TABLE_OPEN_CACHE_MIN);
    org_max_connections= max_connections;
    org_tc_size= tc_size;

    /*
      We are trying to allocate no less than max_connections*5 file
      handles (i.e. we are trying to set the limit so that they will
      be available).  In addition, we allocate no less than how much
      was already allocated.  However below we report a warning and
      recompute values only if we got less file handles than were
      explicitly requested.  No warning and re-computation occur if we
      can't get max_connections*5 but still got no less than was
      requested (value of wanted_files).
    */
    max_open_files= MY_MAX(MY_MAX(wanted_files,
                                  (max_connections + extra_max_connections)*5),
                           open_files_limit);
    files= my_set_max_open_files(max_open_files);
    SYSVAR_AUTOSIZE_IF_CHANGED(open_files_limit, files, ulong);

    if (files < wanted_files && global_system_variables.log_warnings)
      sql_print_warning("Could not increase number of max_open_files to more than %u (request: %u)", files, wanted_files);

    /* If we required too much tc_instances than we reduce */
    SYSVAR_AUTOSIZE_IF_CHANGED(tc_instances,
                               (uint32) MY_MIN(MY_MAX((files - extra_files -
                                                      max_connections)/
                                                      2/tc_size,
                                                     1),
                                              tc_instances),
                               uint32);
    /*
      If we have requested too much file handles than we bring
      max_connections in supported bounds. Still leave at least
      'min_connections' connections
    */
    SYSVAR_AUTOSIZE_IF_CHANGED(max_connections,
                               (ulong) MY_MAX(MY_MIN(files- extra_files-
                                                     min_tc_size*2*tc_instances,
                                                     max_connections),
                                              min_connections),
                               ulong);

    /*
      Decrease tc_size according to max_connections, but
      not below min_tc_size.  Outer MY_MIN() ensures that we
      never increase tc_size automatically (that could
      happen if max_connections is decreased above).
    */
    SYSVAR_AUTOSIZE_IF_CHANGED(tc_size,
                               (ulong) MY_MIN(MY_MAX((files - extra_files -
                                                      max_connections) / 2 / tc_instances,
                                                     min_tc_size),
                                              tc_size), ulong);
    DBUG_PRINT("warning",
               ("Current limits: max_open_files: %u  max_connections: %ld  table_cache: %ld",
                files, max_connections, tc_size));
    if (global_system_variables.log_warnings > 1 &&
        (max_connections < org_max_connections ||
         tc_size < org_tc_size))
      sql_print_warning("Changed limits: max_open_files: %u  max_connections: %lu (was %lu)  table_cache: %lu (was %lu)",
			files, max_connections, org_max_connections,
                        tc_size, org_tc_size);
  }
  /*
    Max_connections and tc_cache are now set.
    Now we can fix other variables depending on this variable.
  */

  /* Fix host_cache_size */
  if (IS_SYSVAR_AUTOSIZE(&host_cache_size))
  {
    /*
      The default value is 128.
      The autoset value is 128, plus 1 for a value of max_connections
      up to 500, plus 1 for every increment of 20 over 500 in the
      max_connections value, capped at 2000.
    */
    uint size= (HOST_CACHE_SIZE + MY_MIN(max_connections, 500) +
                MY_MAX(((long) max_connections)-500,0)/20);
    SYSVAR_AUTOSIZE(host_cache_size, size);
  }

  /* Fix back_log (back_log == 0 added for MySQL compatibility) */
  if (back_log == 0 || IS_SYSVAR_AUTOSIZE(&back_log))
  {
    /*
      The default value is 150.
      The autoset value is 50 + max_connections / 5 capped at 900
    */
    SYSVAR_AUTOSIZE(back_log, MY_MIN(900, (50 + max_connections / 5)));
  }

  unireg_init(opt_specialflag); /* Set up extern variabels */
  if (!(my_default_lc_messages=
        my_locale_by_name(lc_messages)))
  {
    sql_print_error("Unknown locale: '%s'", lc_messages);
    return 1;
  }

  if (init_errmessage())	/* Read error messages from file */
    return 1;
  global_system_variables.lc_messages= my_default_lc_messages;
  global_system_variables.errmsgs= my_default_lc_messages->errmsgs->errmsgs;
  init_client_errs();
  mysql_library_init(unused,unused,unused); /* for replication */
  lex_init();
  if (item_create_init())
    return 1;
  item_init();
  /*
    Process a comma-separated character set list and choose
    the first available character set. This is mostly for
    test purposes, to be able to start "mysqld" even if
    the requested character set is not available (see bug#18743).
  */
  for (;;)
  {
    char *next_character_set_name= strchr(default_character_set_name, ',');
    if (next_character_set_name)
      *next_character_set_name++= '\0';
    if (!(default_charset_info=
          get_charset_by_csname(default_character_set_name,
                                MY_CS_PRIMARY, MYF(MY_WME))))
    {
      if (next_character_set_name)
      {
        default_character_set_name= next_character_set_name;
        default_collation_name= 0;          // Ignore collation
      }
      else
        return 1;                           // Eof of the list
    }
    else
      break;
  }

  if (default_collation_name)
  {
    CHARSET_INFO *default_collation;
    default_collation= get_charset_by_name(default_collation_name, MYF(0));
    if (!default_collation)
    {
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
      buffered_logs.print();
      buffered_logs.cleanup();
#endif
      sql_print_error(ER_DEFAULT(ER_UNKNOWN_COLLATION), default_collation_name);
      return 1;
    }
    if (!my_charset_same(default_charset_info, default_collation))
    {
      sql_print_error(ER_DEFAULT(ER_COLLATION_CHARSET_MISMATCH),
		      default_collation_name,
		      default_charset_info->csname);
      return 1;
    }
    default_charset_info= default_collation;
  }
  /* Set collactions that depends on the default collation */
  global_system_variables.collation_server= default_charset_info;
  global_system_variables.collation_database= default_charset_info;
  if (is_supported_parser_charset(default_charset_info))
  {
    global_system_variables.collation_connection= default_charset_info;
    global_system_variables.character_set_results= default_charset_info;
    global_system_variables.character_set_client= default_charset_info;
  }
  else
  {
    sql_print_warning("'%s' can not be used as client character set. "
                      "'%s' will be used as default client character set.",
                      default_charset_info->csname,
                      my_charset_latin1.csname);
    global_system_variables.collation_connection= &my_charset_latin1;
    global_system_variables.character_set_results= &my_charset_latin1;
    global_system_variables.character_set_client= &my_charset_latin1;
  }

  if (!(character_set_filesystem=
        get_charset_by_csname(character_set_filesystem_name,
                              MY_CS_PRIMARY, MYF(MY_WME))))
    return 1;
  global_system_variables.character_set_filesystem= character_set_filesystem;

  if (!(my_default_lc_time_names=
        my_locale_by_name(lc_time_names_name)))
  {
    sql_print_error("Unknown locale: '%s'", lc_time_names_name);
    return 1;
  }
  global_system_variables.lc_time_names= my_default_lc_time_names;

  /* check log options and issue warnings if needed */
  if (opt_log && opt_logname && *opt_logname &&
      !(log_output_options & (LOG_FILE | LOG_NONE)))
    sql_print_warning("Although a path was specified for the "
                      "--log option, log tables are used. "
                      "To enable logging to files use the --log-output option.");

  if (global_system_variables.sql_log_slow && opt_slow_logname &&
      *opt_slow_logname &&
      !(log_output_options & (LOG_FILE | LOG_NONE)))
    sql_print_warning("Although a path was specified for the "
                      "--log-slow-queries option, log tables are used. "
                      "To enable logging to files use the --log-output=file option.");

  if (!opt_logname || !*opt_logname)
    make_default_log_name(&opt_logname, ".log", false);
  if (!opt_slow_logname || !*opt_slow_logname)
    make_default_log_name(&opt_slow_logname, "-slow.log", false);

#if defined(ENABLED_DEBUG_SYNC)
  /* Initialize the debug sync facility. See debug_sync.cc. */
  if (debug_sync_init())
    return 1; /* purecov: tested */
#endif /* defined(ENABLED_DEBUG_SYNC) */

#if (ENABLE_TEMP_POOL)
  if (use_temp_pool && my_bitmap_init(&temp_pool,0,1024,1))
    return 1;
#else
  use_temp_pool= 0;
#endif

  if (my_dboptions_cache_init())
    return 1;

  /*
    Ensure that lower_case_table_names is set on system where we have case
    insensitive names.  If this is not done the users MyISAM tables will
    get corrupted if accesses with names of different case.
  */
  DBUG_PRINT("info", ("lower_case_table_names: %d", lower_case_table_names));
  if(mysql_real_data_home_ptr == NULL || *mysql_real_data_home_ptr == 0)
    mysql_real_data_home_ptr= mysql_real_data_home;
  SYSVAR_AUTOSIZE(lower_case_file_system,
                  test_if_case_insensitive(mysql_real_data_home_ptr));
  if (!lower_case_table_names && lower_case_file_system == 1)
  {
    if (lower_case_table_names_used)
    {
      sql_print_error("The server option 'lower_case_table_names' is "
                      "configured to use case sensitive table names but the "
                      "data directory resides on a case-insensitive file system. "
                      "Please use a case sensitive file system for your data "
                      "directory or switch to a case-insensitive table name "
                      "mode.");
      return 1;
    }
    else
    {
      if (global_system_variables.log_warnings)
	sql_print_warning("Setting lower_case_table_names=2 because file "
                  "system for %s is case insensitive", mysql_real_data_home_ptr);
      SYSVAR_AUTOSIZE(lower_case_table_names, 2);
    }
  }
  else if (lower_case_table_names == 2 &&
           !(lower_case_file_system= (lower_case_file_system == 1)))
  {
    if (global_system_variables.log_warnings)
      sql_print_warning("lower_case_table_names was set to 2, even though your "
                        "the file system '%s' is case sensitive.  Now setting "
                        "lower_case_table_names to 0 to avoid future problems.",
			mysql_real_data_home_ptr);
    SYSVAR_AUTOSIZE(lower_case_table_names, 0);
  }
  else
  {
    lower_case_file_system= (lower_case_file_system == 1);
  }

  /* Reset table_alias_charset, now that lower_case_table_names is set. */
  table_alias_charset= (lower_case_table_names ?
			files_charset_info :
			&my_charset_bin);

  if (ignore_db_dirs_process_additions())
  {
    sql_print_error("An error occurred while storing ignore_db_dirs to a hash.");
    return 1;
  }


#ifdef WITH_WSREP
  /*
    We need to initialize auxiliary variables, that will be
    further keep the original values of auto-increment options
    as they set by the user. These variables used to restore
    user-defined values of the auto-increment options after
    setting of the wsrep_auto_increment_control to 'OFF'.
  */
  global_system_variables.saved_auto_increment_increment=
    global_system_variables.auto_increment_increment;
  global_system_variables.saved_auto_increment_offset=
    global_system_variables.auto_increment_offset;
#endif /* WITH_WSREP */

  return 0;
}


static int init_thread_environment()
{
  DBUG_ENTER("init_thread_environment");
  server_threads.init();
  mysql_mutex_init(key_LOCK_start_thread, &LOCK_start_thread, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_status, &LOCK_status, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_delayed_insert,
                   &LOCK_delayed_insert, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_delayed_status,
                   &LOCK_delayed_status, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_delayed_create,
                   &LOCK_delayed_create, MY_MUTEX_INIT_SLOW);
  mysql_mutex_init(key_LOCK_crypt, &LOCK_crypt, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_user_conn, &LOCK_user_conn, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_active_mi, &LOCK_active_mi, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_global_system_variables,
                   &LOCK_global_system_variables, MY_MUTEX_INIT_FAST);
  mysql_mutex_record_order(&LOCK_active_mi, &LOCK_global_system_variables);
  mysql_prlock_init(key_rwlock_LOCK_system_variables_hash,
                    &LOCK_system_variables_hash);
  mysql_mutex_init(key_LOCK_prepared_stmt_count,
                   &LOCK_prepared_stmt_count, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_error_messages,
                   &LOCK_error_messages, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_uuid_short_generator,
                   &LOCK_short_uuid_generator, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_thread_id,
                   &LOCK_thread_id, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_stats, &LOCK_stats, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_global_user_client_stats,
                   &LOCK_global_user_client_stats, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_global_table_stats,
                   &LOCK_global_table_stats, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_global_index_stats,
                   &LOCK_global_index_stats, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_prepare_ordered, &LOCK_prepare_ordered,
                   MY_MUTEX_INIT_SLOW);
  mysql_cond_init(key_COND_prepare_ordered, &COND_prepare_ordered, NULL);
  mysql_mutex_init(key_LOCK_after_binlog_sync, &LOCK_after_binlog_sync,
                   MY_MUTEX_INIT_SLOW);
  mysql_mutex_init(key_LOCK_commit_ordered, &LOCK_commit_ordered,
                   MY_MUTEX_INIT_SLOW);

#ifdef HAVE_OPENSSL
  mysql_mutex_init(key_LOCK_des_key_file,
                   &LOCK_des_key_file, MY_MUTEX_INIT_FAST);
#if defined(HAVE_OPENSSL10) && !defined(HAVE_WOLFSSL)
  openssl_stdlocks= (openssl_lock_t*) OPENSSL_malloc(CRYPTO_num_locks() *
                                                     sizeof(openssl_lock_t));
  for (int i= 0; i < CRYPTO_num_locks(); ++i)
    mysql_rwlock_init(key_rwlock_openssl, &openssl_stdlocks[i].lock);
  CRYPTO_set_dynlock_create_callback(openssl_dynlock_create);
  CRYPTO_set_dynlock_destroy_callback(openssl_dynlock_destroy);
  CRYPTO_set_dynlock_lock_callback(openssl_lock);
  CRYPTO_set_locking_callback(openssl_lock_function);
#endif /* HAVE_OPENSSL10 */
#endif /* HAVE_OPENSSL */
  mysql_rwlock_init(key_rwlock_LOCK_sys_init_connect, &LOCK_sys_init_connect);
  mysql_rwlock_init(key_rwlock_LOCK_sys_init_slave, &LOCK_sys_init_slave);
  mysql_rwlock_init(key_rwlock_LOCK_ssl_refresh, &LOCK_ssl_refresh);
  mysql_rwlock_init(key_rwlock_LOCK_grant, &LOCK_grant);
  mysql_rwlock_init(key_rwlock_LOCK_all_status_vars, &LOCK_all_status_vars);
  mysql_cond_init(key_COND_start_thread, &COND_start_thread, NULL);
#ifdef HAVE_REPLICATION
  mysql_mutex_init(key_LOCK_rpl_status, &LOCK_rpl_status, MY_MUTEX_INIT_FAST);
#endif
  mysql_mutex_init(key_LOCK_server_started,
                   &LOCK_server_started, MY_MUTEX_INIT_FAST);
  mysql_cond_init(key_COND_server_started, &COND_server_started, NULL);
  sp_cache_init();
#ifdef HAVE_EVENT_SCHEDULER
  Events::init_mutexes();
#endif
  init_show_explain_psi_keys();
  /* Parameter for threads created for connections */
  (void) pthread_attr_init(&connection_attrib);
  (void) pthread_attr_setdetachstate(&connection_attrib,
				     PTHREAD_CREATE_DETACHED);
  pthread_attr_setscope(&connection_attrib, PTHREAD_SCOPE_SYSTEM);

#ifdef HAVE_REPLICATION
  rpl_init_gtid_slave_state();
  rpl_init_gtid_waiting();
#endif

  DBUG_RETURN(0);
}


#if defined(HAVE_OPENSSL10) && !defined(HAVE_WOLFSSL)
static openssl_lock_t *openssl_dynlock_create(const char *file, int line)
{
  openssl_lock_t *lock= new openssl_lock_t;
  mysql_rwlock_init(key_rwlock_openssl, &lock->lock);
  return lock;
}


static void openssl_dynlock_destroy(openssl_lock_t *lock, const char *file,
				    int line)
{
  mysql_rwlock_destroy(&lock->lock);
  delete lock;
}


static void openssl_lock_function(int mode, int n, const char *file, int line)
{
  if (n < 0 || n > CRYPTO_num_locks())
  {
    /* Lock number out of bounds. */
    sql_print_error("Fatal: OpenSSL interface problem (n = %d)", n);
    abort();
  }
  openssl_lock(mode, &openssl_stdlocks[n], file, line);
}


static void openssl_lock(int mode, openssl_lock_t *lock, const char *file,
			 int line)
{
  int err;
  char const *what;

  switch (mode) {
  case CRYPTO_LOCK|CRYPTO_READ:
    what = "read lock";
    err= mysql_rwlock_rdlock(&lock->lock);
    break;
  case CRYPTO_LOCK|CRYPTO_WRITE:
    what = "write lock";
    err= mysql_rwlock_wrlock(&lock->lock);
    break;
  case CRYPTO_UNLOCK|CRYPTO_READ:
  case CRYPTO_UNLOCK|CRYPTO_WRITE:
    what = "unlock";
    err= mysql_rwlock_unlock(&lock->lock);
    break;
  default:
    /* Unknown locking mode. */
    sql_print_error("Fatal: OpenSSL interface problem (mode=0x%x)", mode);
    abort();
  }
  if (err)
  {
    sql_print_error("Fatal: can't %s OpenSSL lock", what);
    abort();
  }
}
#endif /* HAVE_OPENSSL10 */


struct SSL_ACCEPTOR_STATS
{
  long accept;
  long accept_good;
  long cache_size;
  long verify_mode;
  long verify_depth;
  long zero;
  const char *session_cache_mode;

  SSL_ACCEPTOR_STATS():
    accept(),accept_good(),cache_size(),verify_mode(),verify_depth(),zero(),
    session_cache_mode("NONE")
  {
  }

  void init()
  {
    DBUG_ASSERT(ssl_acceptor_fd !=0 && ssl_acceptor_fd->ssl_context != 0);
    SSL_CTX *ctx= ssl_acceptor_fd->ssl_context;
    accept= 0;
    accept_good= 0;
    verify_mode= SSL_CTX_get_verify_mode(ctx);
    verify_depth= SSL_CTX_get_verify_depth(ctx);
    cache_size= SSL_CTX_sess_get_cache_size(ctx);
    switch (SSL_CTX_get_session_cache_mode(ctx))
    {
    case SSL_SESS_CACHE_OFF:
      session_cache_mode= "OFF"; break;
    case SSL_SESS_CACHE_CLIENT:
      session_cache_mode= "CLIENT"; break;
    case SSL_SESS_CACHE_SERVER:
      session_cache_mode= "SERVER"; break;
    case SSL_SESS_CACHE_BOTH:
      session_cache_mode= "BOTH"; break;
    case SSL_SESS_CACHE_NO_AUTO_CLEAR:
      session_cache_mode= "NO_AUTO_CLEAR"; break;
    case SSL_SESS_CACHE_NO_INTERNAL_LOOKUP:
      session_cache_mode= "NO_INTERNAL_LOOKUP"; break;
    default:
      session_cache_mode= "Unknown"; break;
    }
  }
};

static SSL_ACCEPTOR_STATS ssl_acceptor_stats;
void ssl_acceptor_stats_update(int sslaccept_ret)
{
  statistic_increment(ssl_acceptor_stats.accept, &LOCK_status);
  if (!sslaccept_ret)
    statistic_increment(ssl_acceptor_stats.accept_good,&LOCK_status);
}

static void init_ssl()
{
/*
  Not need to check require_secure_transport on the Linux,
  because it always has Unix domain sockets that are secure:
*/
#ifdef _WIN32
  if (opt_require_secure_transport &&
      !opt_use_ssl &&
      !opt_enable_named_pipe &&
      !opt_bootstrap)
  {
    sql_print_error("Server is started with --require-secure-transport=ON "
                    "but no secure transport (SSL or PIPE) are configured.");
    unireg_abort(1);
  }
#endif
#if defined(HAVE_OPENSSL) && !defined(EMBEDDED_LIBRARY)
  if (opt_use_ssl)
  {
    enum enum_ssl_init_error error= SSL_INITERR_NOERROR;

    /* having ssl_acceptor_fd != 0 signals the use of SSL */
    ssl_acceptor_fd= new_VioSSLAcceptorFd(opt_ssl_key, opt_ssl_cert,
					  opt_ssl_ca, opt_ssl_capath,
					  opt_ssl_cipher, &error,
					  opt_ssl_crl, opt_ssl_crlpath,
					  tls_version);
    DBUG_PRINT("info",("ssl_acceptor_fd: %p", ssl_acceptor_fd));
    if (!ssl_acceptor_fd)
    {
      sql_print_warning("Failed to setup SSL");
      sql_print_warning("SSL error: %s", sslGetErrString(error));
      opt_use_ssl = 0;
      have_ssl= SHOW_OPTION_DISABLED;
    }
    else
      ssl_acceptor_stats.init();

    if (global_system_variables.log_warnings > 0)
    {
      ulong err;
      while ((err= ERR_get_error()))
      {
        char buf[256];
        ERR_error_string_n(err, buf, sizeof(buf));
        sql_print_warning("SSL error: %s",buf);
      }
    }
    else
      ERR_remove_state(0);
  }
  else
  {
    have_ssl= SHOW_OPTION_DISABLED;
  }
  if (des_key_file)
    load_des_key_file(des_key_file);
#endif /* HAVE_OPENSSL && ! EMBEDDED_LIBRARY */
}

/* Reinitialize SSL (FLUSH SSL) */
int reinit_ssl()
{
#if defined(HAVE_OPENSSL) && !defined(EMBEDDED_LIBRARY)
  if (!opt_use_ssl)
    return 0;

  enum enum_ssl_init_error error = SSL_INITERR_NOERROR;
  st_VioSSLFd *new_fd = new_VioSSLAcceptorFd(opt_ssl_key, opt_ssl_cert,
    opt_ssl_ca, opt_ssl_capath, opt_ssl_cipher, &error, opt_ssl_crl,
    opt_ssl_crlpath, tls_version);

  if (!new_fd)
  {
    my_printf_error(ER_UNKNOWN_ERROR, "Failed to refresh SSL, error: %s", MYF(0),
      sslGetErrString(error));
    ERR_clear_error();
    return 1;
  }
  mysql_rwlock_wrlock(&LOCK_ssl_refresh);
  free_vio_ssl_acceptor_fd(ssl_acceptor_fd);
  ssl_acceptor_fd= new_fd;
  ssl_acceptor_stats.init();
  mysql_rwlock_unlock(&LOCK_ssl_refresh);
#endif
  return 0;
}

static void end_ssl()
{
#ifdef HAVE_OPENSSL
#ifndef EMBEDDED_LIBRARY
  if (ssl_acceptor_fd)
  {
    free_vio_ssl_acceptor_fd(ssl_acceptor_fd);
    ssl_acceptor_fd= 0;
  }
#endif /* ! EMBEDDED_LIBRARY */
#endif /* HAVE_OPENSSL */
}

#ifdef _WIN32
/**
  Registers a file to be collected when Windows Error Reporting creates a crash 
  report.
*/
#include <werapi.h>
static void add_file_to_crash_report(char *file)
{
  wchar_t wfile[MAX_PATH+1]= {0};
  if (mbstowcs(wfile, file, MAX_PATH) != (size_t)-1)
  {
    WerRegisterFile(wfile, WerRegFileTypeOther, WER_FILE_ANONYMOUS_DATA);
  }
}
#endif

#define init_default_storage_engine(X,Y) \
  init_default_storage_engine_impl(#X, X, &global_system_variables.Y)

static int init_default_storage_engine_impl(const char *opt_name,
                                            char *engine_name, plugin_ref *res)
{
  if (!engine_name)
  {
    *res= 0;
    return 0;
  }

  LEX_CSTRING name= { engine_name, strlen(engine_name) };
  plugin_ref plugin;
  handlerton *hton;
  if ((plugin= ha_resolve_by_name(0, &name, false)))
    hton= plugin_hton(plugin);
  else
  {
    sql_print_error("Unknown/unsupported storage engine: %s", engine_name);
    return 1;
  }
  if (!ha_storage_engine_is_enabled(hton))
  {
    if (!opt_bootstrap)
    {
      sql_print_error("%s (%s) is not available", opt_name, engine_name);
      return 1;
    }
    DBUG_ASSERT(*res);
  }
  else
  {
    /*
      Need to unlock as global_system_variables.table_plugin
      was acquired during plugin_init()
    */
    mysql_mutex_lock(&LOCK_global_system_variables);
    if (*res)
      plugin_unlock(0, *res);
    *res= plugin;
    mysql_mutex_unlock(&LOCK_global_system_variables);
  }
  return 0;
}

static int
init_gtid_pos_auto_engines(void)
{
  plugin_ref *plugins;

  /*
    For the command-line option --gtid_pos_auto_engines, we allow (and ignore)
    engines that are unknown. This is convenient, since it allows to set
    default auto-create engines that might not be used by particular users.
    The option sets a list of storage engines that will have gtid position
    table auto-created for them if needed. And if the engine is not available,
    then it will certainly not be needed.
  */
  if (gtid_pos_auto_engines)
    plugins= resolve_engine_list(NULL, gtid_pos_auto_engines,
                                 strlen(gtid_pos_auto_engines), false, false);
  else
    plugins= resolve_engine_list(NULL, "", 0, false, false);
  if (!plugins)
    return 1;
  mysql_mutex_lock(&LOCK_global_system_variables);
  opt_gtid_pos_auto_plugins= plugins;
  mysql_mutex_unlock(&LOCK_global_system_variables);
  return 0;
}

#define MYSQL_COMPATIBILITY_OPTION(option) \
  { option, OPT_MYSQL_COMPATIBILITY, \
   0, 0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0 }

#define MYSQL_TO_BE_IMPLEMENTED_OPTION(option) \
  { option, OPT_MYSQL_TO_BE_IMPLEMENTED, \
   0, 0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0 }

#define MYSQL_SUGGEST_ANALOG_OPTION(option, str) \
  { option, OPT_MYSQL_COMPATIBILITY, \
   0, 0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0 }

#define MARIADB_REMOVED_OPTION(option) \
  { option, OPT_REMOVED_OPTION, \
   0, 0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0 }

static int init_server_components()
{
  DBUG_ENTER("init_server_components");
  /*
    We need to call each of these following functions to ensure that
    all things are initialized so that unireg_abort() doesn't fail
  */
  my_cpu_init();
  mdl_init();
  if (tdc_init() || hostname_cache_init())
    unireg_abort(1);

  query_cache_set_min_res_unit(query_cache_min_res_unit);
  query_cache_result_size_limit(query_cache_limit);
  /* if we set size of QC non zero in config then probably we want it ON */
  if (query_cache_size != 0 &&
      global_system_variables.query_cache_type == 0 &&
      !IS_SYSVAR_AUTOSIZE(&query_cache_size))
  {
    global_system_variables.query_cache_type= 1;
  }
  query_cache_init();
  DBUG_ASSERT(query_cache_size < ULONG_MAX);
  query_cache_resize((ulong)query_cache_size);
  my_rnd_init(&sql_rand,(ulong) server_start_time,(ulong) server_start_time/2);
  setup_fpu();
  init_thr_lock();
  backup_init();

  if (init_thr_timer(thread_scheduler->max_threads + extra_max_connections))
  {
    fprintf(stderr, "Can't initialize timers\n");
    unireg_abort(1);
  }

  my_uuid_init((ulong) (my_rnd(&sql_rand))*12345,12345);
  wt_init();

  /* Setup logs */

  setup_log_handling();

  /*
    Enable old-fashioned error log, except when the user has requested
    help information. Since the implementation of plugin server
    variables the help output is now written much later.
  */
#ifdef _WIN32
  if (opt_console)
   opt_error_log= false;
#endif

  if (opt_error_log && !opt_abort)
  {
    if (!log_error_file_ptr[0])
    {
      fn_format(log_error_file, pidfile_name, mysql_data_home, ".err",
                MY_REPLACE_EXT); /* replace '.<domain>' by '.err', bug#4997 */
      SYSVAR_AUTOSIZE(log_error_file_ptr, log_error_file);
    }
    else
    {
      fn_format(log_error_file, log_error_file_ptr, mysql_data_home, ".err",
                MY_UNPACK_FILENAME | MY_SAFE_PATH);
      log_error_file_ptr= log_error_file;
    }
    if (!log_error_file[0])
      opt_error_log= 0;                         // Too long file name
    else
    {
      my_bool res;
#ifndef EMBEDDED_LIBRARY
      res= reopen_fstreams(log_error_file, stdout, stderr);
#else
      res= reopen_fstreams(log_error_file, NULL, stderr);
#endif

      if (!res)
        setbuf(stderr, NULL);

#ifdef _WIN32
      /* Add error log to windows crash reporting. */
      add_file_to_crash_report(log_error_file);
#endif
    }
  }

  /* set up the hook before initializing plugins which may use it */
  error_handler_hook= my_message_sql;
  proc_info_hook= set_thd_stage_info;

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  /*
    Parsing the performance schema command line option may have reported
    warnings/information messages.
    Now that the logger is finally available, and redirected
    to the proper file when the --log--error option is used,
    print the buffered messages to the log.
  */
  buffered_logs.print();
  buffered_logs.cleanup();
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */

#ifndef EMBEDDED_LIBRARY
  /*
    Now that the logger is available, redirect character set
    errors directly to the logger
    (instead of the buffered_logs used at the server startup time).
  */
  my_charset_error_reporter= charset_error_reporter;
#endif

  xid_cache_init();

  /* need to configure logging before initializing storage engines */
  if (!opt_bin_log_used && !WSREP_ON)
  {
    if (opt_log_slave_updates)
      sql_print_warning("You need to use --log-bin to make "
                        "--log-slave-updates work.");
    if (binlog_format_used)
      sql_print_warning("You need to use --log-bin to make "
                        "--binlog-format work.");
  }

  /* Check that we have not let the format to unspecified at this point */
  DBUG_ASSERT((uint)global_system_variables.binlog_format <=
              array_elements(binlog_format_names)-1);

#ifdef HAVE_REPLICATION
  if (opt_log_slave_updates && replicate_same_server_id)
  {
    if (opt_bin_log)
    {
      sql_print_error("using --replicate-same-server-id in conjunction with "
                      "--log-slave-updates is impossible, it would lead to "
                      "infinite loops in this server.");
      unireg_abort(1);
    }
    else
      sql_print_warning("using --replicate-same-server-id in conjunction with "
                        "--log-slave-updates would lead to infinite loops in "
                        "this server. However this will be ignored as the "
                        "--log-bin option is not defined.");
  }
#endif

  if (opt_bin_log)
  {
    /* Reports an error and aborts, if the --log-bin's path 
       is a directory.*/
    if (opt_bin_logname[0] && 
        opt_bin_logname[strlen(opt_bin_logname) - 1] == FN_LIBCHAR)
    {
      sql_print_error("Path '%s' is a directory name, please specify "
                      "a file name for --log-bin option", opt_bin_logname);
      unireg_abort(1);
    }

    /* Reports an error and aborts, if the --log-bin-index's path 
       is a directory.*/
    if (opt_binlog_index_name && 
        opt_binlog_index_name[strlen(opt_binlog_index_name) - 1] 
        == FN_LIBCHAR)
    {
      sql_print_error("Path '%s' is a directory name, please specify "
                      "a file name for --log-bin-index option",
                      opt_binlog_index_name);
      unireg_abort(1);
    }

    char buf[FN_REFLEN];
    const char *ln;
    ln= mysql_bin_log.generate_name(opt_bin_logname, "-bin", 1, buf);
    if (!opt_bin_logname[0] && !opt_binlog_index_name)
    {
      /*
        User didn't give us info to name the binlog index file.
        Picking `hostname`-bin.index like did in 4.x, causes replication to
        fail if the hostname is changed later. So, we would like to instead
        require a name. But as we don't want to break many existing setups, we
        only give warning, not error.
      */
      sql_print_warning("No argument was provided to --log-bin and "
                        "neither --log-basename or --log-bin-index where "
                        "used;  This may cause repliction to break when this "
                        "server acts as a master and has its hostname "
                        "changed! Please use '--log-basename=%s' or "
                        "'--log-bin=%s' to avoid this problem.",
                        opt_log_basename, ln);
    }
    if (ln == buf)
      opt_bin_logname= my_once_strdup(buf, MYF(MY_WME));
  }

  /*
    Since some wsrep threads (THDs) are create before plugins are
    initialized, LOCK_plugin mutex needs to be initialized here.
  */
  plugin_mutex_init();

  /*
    Wsrep initialization must happen at this point, because:
    - opt_bin_logname must be known when starting replication
      since SST may need it
    - SST may modify binlog index file, so it must be opened
      after SST has happened

    We also (unconditionally) initialize wsrep LOCKs and CONDs.
    It is because they are used while accessing wsrep system
    variables even when a wsrep provider is not loaded.
  */

  /* It's now safe to use thread specific memory */
  mysqld_server_initialized= 1;

#ifndef EMBEDDED_LIBRARY
  wsrep_thr_init();
#endif

#ifdef WITH_WSREP
  if (wsrep_init_server()) unireg_abort(1);

  if (WSREP_ON && !wsrep_recovery && !opt_abort)
  {
    if (opt_bootstrap) // bootsrap option given - disable wsrep functionality
    {
      wsrep_provider_init(WSREP_NONE);
      if (wsrep_init())
        unireg_abort(1);
    }
    else // full wsrep initialization
    {
      // add basedir/bin to PATH to resolve wsrep script names
      char* const tmp_path= (char*)my_alloca(strlen(mysql_home) +
                                             strlen("/bin") + 1);
      if (tmp_path)
      {
        strcpy(tmp_path, mysql_home);
        strcat(tmp_path, "/bin");
        wsrep_prepend_PATH(tmp_path);
      }
      else
      {
        WSREP_ERROR("Could not append %s/bin to PATH", mysql_home);
      }
      my_afree(tmp_path);

      if (wsrep_before_SE())
      {
        set_ports(); // this is also called in network_init() later but we need
                     // to know mysqld_port now - lp:1071882
        wsrep_init_startup(true);
      }
    }
  }
#endif /* WITH_WSREP */

  if (opt_bin_log)
  {
    if (mysql_bin_log.open_index_file(opt_binlog_index_name, opt_bin_logname,
                                      TRUE))
    {
      unireg_abort(1);
    }

    log_bin_basename=
      rpl_make_log_name(key_memory_MYSQL_BIN_LOG_basename,
                        opt_bin_logname, pidfile_name,
                        opt_bin_logname ? "" : "-bin");
    log_bin_index=
      rpl_make_log_name(key_memory_MYSQL_BIN_LOG_index,
                        opt_binlog_index_name, log_bin_basename, ".index");
    if (log_bin_basename == NULL || log_bin_index == NULL)
    {
      sql_print_error("Unable to create replication path names:"
                      " out of memory or path names too long"
                      " (path name exceeds " STRINGIFY_ARG(FN_REFLEN)
                      " or file name exceeds " STRINGIFY_ARG(FN_LEN) ").");
      unireg_abort(1);
    }
  }

#ifndef EMBEDDED_LIBRARY
  DBUG_PRINT("debug",
             ("opt_bin_logname: %s, opt_relay_logname: %s, pidfile_name: %s",
              opt_bin_logname, opt_relay_logname, pidfile_name));
  if (opt_relay_logname)
  {
    relay_log_basename=
      rpl_make_log_name(key_memory_MYSQL_RELAY_LOG_basename,
                        opt_relay_logname, pidfile_name,
                        opt_relay_logname ? "" : "-relay-bin");
    relay_log_index=
      rpl_make_log_name(key_memory_MYSQL_RELAY_LOG_index,
                        opt_relaylog_index_name, relay_log_basename, ".index");
    if (relay_log_basename == NULL || relay_log_index == NULL)
    {
      sql_print_error("Unable to create replication path names:"
                      " out of memory or path names too long"
                      " (path name exceeds " STRINGIFY_ARG(FN_REFLEN)
                      " or file name exceeds " STRINGIFY_ARG(FN_LEN) ").");
      unireg_abort(1);
    }
  }
#endif /* !EMBEDDED_LIBRARY */

  /* call ha_init_key_cache() on all key caches to init them */
  process_key_caches(&ha_init_key_cache, 0);

  init_global_table_stats();
  init_global_index_stats();

  /* Allow storage engine to give real error messages */
  if (unlikely(ha_init_errors()))
    DBUG_RETURN(1);

  tc_log= 0; // ha_initialize_handlerton() needs that

  if (plugin_init(&remaining_argc, remaining_argv,
                  (opt_noacl ? PLUGIN_INIT_SKIP_PLUGIN_TABLE : 0) |
                  (opt_abort ? PLUGIN_INIT_SKIP_INITIALIZATION : 0)))
  {
    sql_print_error("Failed to initialize plugins.");
    unireg_abort(1);
  }
  plugins_are_initialized= TRUE;  /* Don't separate from init function */

#ifdef HAVE_REPLICATION
  /*
    Semisync is not required by other components, which justifies its
    initialization at this point when thread specific memory is also available.
  */
  if (repl_semisync_master.init_object() ||
      repl_semisync_slave.init_object())
  {
    sql_print_error("Could not initialize semisync.");
    unireg_abort(1);
  }
#endif

#ifndef EMBEDDED_LIBRARY
  if (session_tracker_init())
    return 1;
#endif //EMBEDDED_LIBRARY

  /* we do want to exit if there are any other unknown options */
  if (remaining_argc > 1)
  {
    int ho_error;
    struct my_option removed_opts[]=
    {
      /* The following options exist in 5.6 but not in 10.0 */
      MYSQL_COMPATIBILITY_OPTION("log-raw"),
      MYSQL_COMPATIBILITY_OPTION("log-bin-use-v1-row-events"),
      MYSQL_TO_BE_IMPLEMENTED_OPTION("default-authentication-plugin"),
      MYSQL_COMPATIBILITY_OPTION("binlog-max-flush-queue-time"),
      MYSQL_COMPATIBILITY_OPTION("master-info-repository"),
      MYSQL_COMPATIBILITY_OPTION("relay-log-info-repository"),
      MYSQL_SUGGEST_ANALOG_OPTION("binlog-rows-query-log-events", "--binlog-annotate-row-events"),
      MYSQL_COMPATIBILITY_OPTION("binlog-order-commits"),
      MYSQL_TO_BE_IMPLEMENTED_OPTION("log-throttle-queries-not-using-indexes"),
      MYSQL_TO_BE_IMPLEMENTED_OPTION("end-markers-in-json"),
      MYSQL_TO_BE_IMPLEMENTED_OPTION("optimizer-trace-features"),     // OPTIMIZER_TRACE
      MYSQL_TO_BE_IMPLEMENTED_OPTION("optimizer-trace-offset"),       // OPTIMIZER_TRACE
      MYSQL_TO_BE_IMPLEMENTED_OPTION("optimizer-trace-limit"),        // OPTIMIZER_TRACE
      MYSQL_COMPATIBILITY_OPTION("server-id-bits"),
      MYSQL_TO_BE_IMPLEMENTED_OPTION("slave-rows-search-algorithms"), // HAVE_REPLICATION
      MYSQL_TO_BE_IMPLEMENTED_OPTION("slave-allow-batching"),         // HAVE_REPLICATION
      MYSQL_COMPATIBILITY_OPTION("slave-checkpoint-period"),      // HAVE_REPLICATION
      MYSQL_COMPATIBILITY_OPTION("slave-checkpoint-group"),       // HAVE_REPLICATION
      MYSQL_SUGGEST_ANALOG_OPTION("slave-pending-jobs-size-max", "--slave-parallel-max-queued"),  // HAVE_REPLICATION
      MYSQL_TO_BE_IMPLEMENTED_OPTION("sha256-password-private-key-path"), // HAVE_OPENSSL
      MYSQL_TO_BE_IMPLEMENTED_OPTION("sha256-password-public-key-path"),  // HAVE_OPENSSL

      /* The following options exist in 5.5 and 5.6 but not in 10.0 */
      MYSQL_SUGGEST_ANALOG_OPTION("abort-slave-event-count", "--debug-abort-slave-event-count"),
      MYSQL_SUGGEST_ANALOG_OPTION("disconnect-slave-event-count", "--debug-disconnect-slave-event-count"),
      MYSQL_SUGGEST_ANALOG_OPTION("exit-info", "--debug-exit-info"),
      MYSQL_SUGGEST_ANALOG_OPTION("max-binlog-dump-events", "--debug-max-binlog-dump-events"),
      MYSQL_SUGGEST_ANALOG_OPTION("sporadic-binlog-dump-fail", "--debug-sporadic-binlog-dump-fail"),
      MYSQL_COMPATIBILITY_OPTION("new"),
      MYSQL_COMPATIBILITY_OPTION("show_compatibility_56"),

      /* The following options were removed in 10.5 */
#if defined(__linux__)
      MARIADB_REMOVED_OPTION("super-large-pages"),
#endif
      MARIADB_REMOVED_OPTION("innodb-idle-flush-pct"),
      MARIADB_REMOVED_OPTION("innodb-locks-unsafe-for-binlog"),
      MARIADB_REMOVED_OPTION("innodb-rollback-segments"),
      MARIADB_REMOVED_OPTION("innodb-stats-sample-pages"),
      MARIADB_REMOVED_OPTION("max-long-data-size"),
      MARIADB_REMOVED_OPTION("multi-range-count"),
      MARIADB_REMOVED_OPTION("skip-bdb"),
      MARIADB_REMOVED_OPTION("thread-concurrency"),
      MARIADB_REMOVED_OPTION("timed-mutexes"),

      /* The following options were added after 5.6.10 */
      MYSQL_TO_BE_IMPLEMENTED_OPTION("rpl-stop-slave-timeout"),
      MYSQL_TO_BE_IMPLEMENTED_OPTION("validate-user-plugins"), // NO_EMBEDDED_ACCESS_CHECKS
      {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
    };
    /*
      We need to eat any 'loose' arguments first before we conclude
      that there are unprocessed options.
    */
    my_getopt_skip_unknown= 0;
#ifdef WITH_WSREP
    if (wsrep_recovery)
      my_getopt_skip_unknown= TRUE;
#endif

    if ((ho_error= handle_options(&remaining_argc, &remaining_argv, removed_opts,
                                  mysqld_get_one_option)))
      unireg_abort(ho_error);
    /* Add back the program name handle_options removes */
    remaining_argc++;
    remaining_argv--;
    my_getopt_skip_unknown= TRUE;

#ifdef WITH_WSREP
    if (!wsrep_recovery)
    {
#endif
      if (remaining_argc > 1)
      {
        fprintf(stderr, "%s: Too many arguments (first extra is '%s').\n",
                my_progname, remaining_argv[1]);
        unireg_abort(1);
      }
#ifdef WITH_WSREP
    }
#endif
  }

  if (opt_abort)
    unireg_abort(0);

  if (init_io_cache_encryption())
    unireg_abort(1);

  /* if the errmsg.sys is not loaded, terminate to maintain behaviour */
  if (!DEFAULT_ERRMSGS[0][0])
    unireg_abort(1);  

  /* We have to initialize the storage engines before CSV logging */
  if (ha_init())
  {
    sql_print_error("Can't init databases");
    unireg_abort(1);
  }

  if (opt_bootstrap)
    log_output_options= LOG_FILE;
  else
    logger.init_log_tables();

  if (log_output_options & LOG_NONE)
  {
    /*
      Issue a warining if there were specified additional options to the
      log-output along with NONE. Probably this wasn't what user wanted.
    */
    if ((log_output_options & LOG_NONE) && (log_output_options & ~LOG_NONE))
      sql_print_warning("There were other values specified to "
                        "log-output besides NONE. Disabling slow "
                        "and general logs anyway.");
    logger.set_handlers(LOG_FILE, LOG_NONE, LOG_NONE);
  }
  else
  {
    /* fall back to the log files if tables are not present */
    LEX_CSTRING csv_name={STRING_WITH_LEN("csv")};
    if (!plugin_is_ready(&csv_name, MYSQL_STORAGE_ENGINE_PLUGIN))
    {
      /* purecov: begin inspected */
      sql_print_error("CSV engine is not present, falling back to the "
                      "log files");
      SYSVAR_AUTOSIZE(log_output_options, 
                      (log_output_options & ~LOG_TABLE) | LOG_FILE);
      /* purecov: end */
    }

    logger.set_handlers(LOG_FILE,
                        global_system_variables.sql_log_slow ?
                        log_output_options:LOG_NONE,
                        opt_log ? log_output_options:LOG_NONE);
  }

  if (init_default_storage_engine(default_storage_engine, table_plugin))
    unireg_abort(1);

  if (default_tmp_storage_engine && !*default_tmp_storage_engine)
    default_tmp_storage_engine= NULL;

  if (enforced_storage_engine && !*enforced_storage_engine)
    enforced_storage_engine= NULL;

  if (init_default_storage_engine(default_tmp_storage_engine, tmp_table_plugin))
    unireg_abort(1);

  if (init_default_storage_engine(enforced_storage_engine, enforced_table_plugin))
    unireg_abort(1);

  if (init_gtid_pos_auto_engines())
    unireg_abort(1);

#ifdef USE_ARIA_FOR_TMP_TABLES
  if (!ha_storage_engine_is_enabled(maria_hton) && !opt_bootstrap)
  {
    sql_print_error("Aria engine is not enabled or did not start. The Aria engine must be enabled to continue as mysqld was configured with --with-aria-tmp-tables");
    unireg_abort(1);
  }
#endif

#ifdef WITH_WSREP
  /*
    Now is the right time to initialize members of wsrep startup threads
    that rely on plugins and other related global system variables to be
    initialized. This initialization was not possible before, as plugins
    (and thus some global system variables) are initialized after wsrep
    startup threads are created.
    Note: This only needs to be done for rsync and mariabackup based SST
    methods.
  */
  if (wsrep_before_SE())
    wsrep_plugins_post_init();

  if (WSREP_ON && !opt_bin_log)
  {
    wsrep_emulate_bin_log= 1;
  }
#endif

  tc_log= get_tc_log_implementation();

  if (tc_log->open(opt_bin_log ? opt_bin_logname : opt_tc_log_file))
  {
    sql_print_error("Can't init tc log");
    unireg_abort(1);
  }

  if (ha_recover(0))
  {
    unireg_abort(1);
  }

  if (opt_bin_log)
  {
    int error;
    mysql_mutex_t *log_lock= mysql_bin_log.get_log_lock();
    mysql_mutex_lock(log_lock);
    error= mysql_bin_log.open(opt_bin_logname, 0, 0,
                              WRITE_CACHE, max_binlog_size, 0, TRUE);
    mysql_mutex_unlock(log_lock);
    if (unlikely(error))
      unireg_abort(1);
  }

#ifdef HAVE_REPLICATION
  if (opt_bin_log && expire_logs_days)
  {
    time_t purge_time= server_start_time - expire_logs_days*24*60*60;
    if (purge_time >= 0)
      mysql_bin_log.purge_logs_before_date(purge_time);
  }
#endif

  if (opt_myisam_log)
    (void) mi_log(1);

#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT) && !defined(EMBEDDED_LIBRARY)
  if (locked_in_memory)
  {
    int error;
    if (user_info)
    {
      DBUG_ASSERT(!getuid());
      if (setreuid((uid_t) -1, 0) == -1)
      {
        sql_perror("setreuid");
        unireg_abort(1);
      }
      error= mlockall(MCL_CURRENT);
      set_user(mysqld_user, user_info);
    }
    else
      error= mlockall(MCL_CURRENT);

    if (unlikely(error))
    {
      if (global_system_variables.log_warnings)
	sql_print_warning("Failed to lock memory. Errno: %d\n",errno);
      locked_in_memory= 0;
    }
  }
#else
  locked_in_memory= 0;
#endif

  ft_init_stopwords();

  init_max_user_conn();
  init_update_queries();
  init_global_user_stats();
  init_global_client_stats();
  if (!opt_bootstrap)
    servers_init(0);
  init_status_vars();
  DBUG_RETURN(0);
}


#ifndef EMBEDDED_LIBRARY
#ifdef _WIN32
static void create_shutdown_event()
{
  hEventShutdown=CreateEvent(0, FALSE, FALSE, shutdown_event_name);
  // On "Stop Service" we have to do regular shutdown
  Service.SetShutdownEvent(hEventShutdown);
}
#else /*_WIN32*/
#define create_shutdown_event()
#endif
#endif /* EMBEDDED_LIBRARY */

#ifndef EMBEDDED_LIBRARY

#ifndef DBUG_OFF
/*
  Debugging helper function to keep the locale database
  (see sql_locale.cc) and max_month_name_length and
  max_day_name_length variable values in consistent state.
*/
static void test_lc_time_sz()
{
  DBUG_ENTER("test_lc_time_sz");
  for (MY_LOCALE **loc= my_locales; *loc; loc++)
  {
    size_t max_month_len= 0;
    size_t max_day_len= 0;
    for (const char **month= (*loc)->month_names->type_names; *month; month++)
    {
      set_if_bigger(max_month_len,
                    my_numchars_mb(&my_charset_utf8mb3_general_ci,
                                   *month, *month + strlen(*month)));
    }
    for (const char **day= (*loc)->day_names->type_names; *day; day++)
    {
      set_if_bigger(max_day_len,
                    my_numchars_mb(&my_charset_utf8mb3_general_ci,
                                   *day, *day + strlen(*day)));
    }
    if ((*loc)->max_month_name_length != max_month_len ||
        (*loc)->max_day_name_length != max_day_len)
    {
      DBUG_PRINT("Wrong max day name(or month name) length for locale:",
                 ("%s", (*loc)->name));
      DBUG_ASSERT(0);
    }
  }
  DBUG_VOID_RETURN;
}
#endif//DBUG_OFF


#ifdef __WIN__
int win_main(int argc, char **argv)
#else
int mysqld_main(int argc, char **argv)
#endif
{
#ifndef _WIN32
  /* We can't close stdin just now, because it may be booststrap mode. */
  bool please_close_stdin= fcntl(STDIN_FILENO, F_GETFD) >= 0;
#endif

  /*
    Perform basic thread library and malloc initialization,
    to be able to read defaults files and parse options.
  */
  my_progname= argv[0];
  sf_leaking_memory= 1; // no safemalloc memory leak reports if we exit early
  mysqld_server_started= mysqld_server_initialized= 0;

  if (init_early_variables())
    exit(1);

#ifndef _WIN32
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  pre_initialize_performance_schema();
#endif /*WITH_PERFSCHEMA_STORAGE_ENGINE */
  // For windows, my_init() is called from the win specific mysqld_main
  if (my_init())                 // init my_sys library & pthreads
  {
    fprintf(stderr, "my_init() failed.");
    return 1;
  }
#endif

  orig_argc= argc;
  orig_argv= argv;
  my_defaults_mark_files= TRUE;
  load_defaults_or_exit(MYSQL_CONFIG_NAME, load_default_groups, &argc, &argv);
  defaults_argc= argc;
  defaults_argv= argv;
  remaining_argc= argc;
  remaining_argv= argv;

  /* Must be initialized early for comparison of options name */
  system_charset_info= &my_charset_utf8mb3_general_ci;

  sys_var_init();

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  /*
    Initialize the array of performance schema instrument configurations.
  */
  init_pfs_instrument_array();
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */
  /*
    Logs generated while parsing the command line
    options are buffered and printed later.
  */
  buffered_logs.init();
  my_getopt_error_reporter= buffered_option_error_reporter;
  my_charset_error_reporter= buffered_option_error_reporter;
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  pfs_param.m_pfs_instrument= const_cast<char*>("");
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */
  my_timer_init(&sys_timer_info);

  int ho_error __attribute__((unused))= handle_early_options();

  /* fix tdc_size */
  if (IS_SYSVAR_AUTOSIZE(&tdc_size))
  {
    SYSVAR_AUTOSIZE(tdc_size, MY_MIN(400 + tdc_size / 2, 2000));
  }

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  if (ho_error == 0)
  {
    if (pfs_param.m_enabled  && !opt_help && !opt_bootstrap)
    {
      /* Add sizing hints from the server sizing parameters. */
      pfs_param.m_hints.m_table_definition_cache= tdc_size;
      pfs_param.m_hints.m_table_open_cache= tc_size;
      pfs_param.m_hints.m_max_connections= max_connections;
      pfs_param.m_hints.m_open_files_limit= open_files_limit;
      PSI_hook= initialize_performance_schema(&pfs_param);
      if (PSI_hook == NULL)
      {
        pfs_param.m_enabled= false;
        buffered_logs.buffer(WARNING_LEVEL,
                             "Performance schema disabled (reason: init failed).");
      }
    }
  }
#else
  /*
    Other provider of the instrumentation interface should
    initialize PSI_hook here:
    - HAVE_PSI_INTERFACE is for the instrumentation interface
    - WITH_PERFSCHEMA_STORAGE_ENGINE is for one implementation
      of the interface,
    but there could be alternate implementations, which is why
    these two defines are kept separate.
  */
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */

#ifdef HAVE_PSI_INTERFACE
  /*
    Obtain the current performance schema instrumentation interface,
    if available.
  */
  if (PSI_hook)
  {
    PSI *psi_server= (PSI*) PSI_hook->get_interface(PSI_CURRENT_VERSION);
    if (likely(psi_server != NULL))
    {
      set_psi_server(psi_server);

      /*
        Now that we have parsed the command line arguments, and have
        initialized the performance schema itself, the next step is to
        register all the server instruments.
      */
      init_server_psi_keys();
      /* Instrument the main thread */
      PSI_thread *psi= PSI_CALL_new_thread(key_thread_main, NULL, 0);
      PSI_CALL_set_thread_os_id(psi);
      PSI_CALL_set_thread(psi);

      /*
        Now that some instrumentation is in place,
        recreate objects which were initialised early,
        so that they are instrumented as well.
      */
      my_thread_global_reinit();
    }
  }
#endif /* HAVE_PSI_INTERFACE */

  mysql_mutex_init(key_LOCK_error_log, &LOCK_error_log, MY_MUTEX_INIT_FAST);

  /* Initialize audit interface globals. Audit plugins are inited later. */
  mysql_audit_initialize();

  /*
    Perform basic logger initialization logger. Should be called after
    MY_INIT, as it initializes mutexes. Log tables are inited later.
  */
  logger.init_base();

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  if (ho_error)
  {
    /*
      Parsing command line option failed,
      Since we don't have a workable remaining_argc/remaining_argv
      to continue the server initialization, this is as far as this
      code can go.
      This is the best effort to log meaningful messages:
      - messages will be printed to stderr, which is not redirected yet,
      - messages will be printed in the NT event log, for windows.
    */
    buffered_logs.print();
    buffered_logs.cleanup();
    /*
      Not enough initializations for unireg_abort()
      Using exit() for windows.
    */
    exit (ho_error);
  }
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */

#ifdef _CUSTOMSTARTUPCONFIG_
  if (_cust_check_startup())
  {
    / * _cust_check_startup will report startup failure error * /
    exit(1);
  }
#endif

  if (init_common_variables())
    unireg_abort(1);				// Will do exit

  init_signals();

  ulonglong new_thread_stack_size;
  new_thread_stack_size= my_setstacksize(&connection_attrib,
                                         (size_t)my_thread_stack_size);
  if (new_thread_stack_size != my_thread_stack_size)
  {
    if ((new_thread_stack_size < my_thread_stack_size) &&
        global_system_variables.log_warnings)
      sql_print_warning("Asked for %llu thread stack, but got %llu",
                        my_thread_stack_size, new_thread_stack_size);
    SYSVAR_AUTOSIZE(my_thread_stack_size, new_thread_stack_size);
  }

  (void) thr_setconcurrency(concurrency);	// 10 by default

  select_thread=pthread_self();
  select_thread_in_use=1;

#ifdef HAVE_LIBWRAP
  libwrapName= my_progname+dirname_length(my_progname);
  openlog(libwrapName, LOG_PID, LOG_AUTH);
#endif

#ifndef DBUG_OFF
  test_lc_time_sz();
  srand((uint) time(NULL)); 
#endif

  /*
    We have enough space for fiddling with the argv, continue
  */
  check_data_home(mysql_real_data_home);
  if (my_setwd(mysql_real_data_home, opt_abort ? 0 : MYF(MY_WME)) && !opt_abort)
    unireg_abort(1);				/* purecov: inspected */

  /* Atomic write initialization must be done as root */
  my_init_atomic_write();

  if ((user_info= check_user(mysqld_user)))
  {
#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT)
    if (locked_in_memory) // getuid() == 0 here
      set_effective_user(user_info);
    else
#endif
      set_user(mysqld_user, user_info);
  }

#ifdef WITH_WSREP
  WSREP_ON_= (global_system_variables.wsrep_on &&
          wsrep_provider &&
          strcmp(wsrep_provider, WSREP_NONE));

  if (WSREP_ON && wsrep_check_opts()) unireg_abort(1);
#endif

  /* 
   The subsequent calls may take a long time : e.g. innodb log read.
   Thus set the long running service control manager timeout
  */
#if defined(_WIN32) && !defined(EMBEDDED_LIBRARY)
  Service.SetSlowStarting(slow_start_timeout);
#endif

  if (init_server_components())
    unireg_abort(1);

  init_ssl();
  network_init();

#ifdef _WIN32
  if (!opt_console)
  {
    FreeConsole();				// Remove window
  }
#endif

#ifdef WITH_WSREP
  // Recover and exit.
  if (wsrep_recovery)
  {
    select_thread_in_use= 0;
    if (WSREP_ON)
      wsrep_recover();
    else
      sql_print_information("WSREP: disabled, skipping position recovery");
    unireg_abort(0);
  }
#endif

  /*
    init signals & alarm
    After this we can't quit by a simple unireg_abort
  */
  start_signal_handler();				// Creates pidfile

  if (mysql_rm_tmp_tables() || acl_init(opt_noacl) ||
      my_tz_init((THD *)0, default_tz_name, opt_bootstrap))
    unireg_abort(1);

  if (!opt_noacl)
    (void) grant_init();

  udf_init();

  if (opt_bootstrap) /* If running with bootstrap, do not start replication. */
    opt_skip_slave_start= 1;

  binlog_unsafe_map_init();

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  initialize_performance_schema_acl(opt_bootstrap);
#endif

  initialize_information_schema_acl();

  execute_ddl_log_recovery();

  /*
    Change EVENTS_ORIGINAL to EVENTS_OFF (the default value) as there is no
    point in using ORIGINAL during startup
  */
  if (Events::opt_event_scheduler == Events::EVENTS_ORIGINAL)
    Events::opt_event_scheduler= Events::EVENTS_OFF;

  Events::set_original_state(Events::opt_event_scheduler);
  if (Events::init((THD*) 0, opt_noacl || opt_bootstrap))
    unireg_abort(1);

#ifdef WITH_WSREP
  if (WSREP_ON)
  {
    if (opt_bootstrap)
    {
      /*! bootstrap wsrep init was taken care of above */
    }
    else
    {
      wsrep_init_globals();
      if (!wsrep_before_SE())
      {
        wsrep_init_startup(false);
      }
      wsrep_new_cluster= false;
      if (wsrep_cluster_address_exists())
      {
        WSREP_DEBUG("Startup creating %ld applier threads running %lu",
                wsrep_slave_threads - 1, wsrep_running_applier_threads);
        wsrep_create_appliers(wsrep_slave_threads - 1);
      }
    }
  }
#endif /* WITH_WSREP */

  if (opt_bootstrap)
  {
    select_thread_in_use= 0;                    // Allow 'kill' to work
    int bootstrap_error= bootstrap(mysql_stdin);
    if (!abort_loop)
      unireg_abort(bootstrap_error);
    else
    {
      sleep(2);                                 // Wait for kill
      exit(0);
    }
  }

  create_shutdown_event();
  start_handle_manager();

  /* Copy default global rpl_filter to global_rpl_filter */
  copy_filter_setting(global_rpl_filter, get_or_create_rpl_filter("", 0));

  /*
    init_slave() must be called after the thread keys are created.
    Some parts of the code (e.g. SHOW STATUS LIKE 'slave_running' and other
    places) assume that active_mi != 0, so let's fail if it's 0 (out of
    memory); a message has already been printed.
  */
  if (init_slave() && !active_mi)
  {
    unireg_abort(1);
  }

  if (opt_init_file && *opt_init_file)
  {
    if (read_init_file(opt_init_file))
      unireg_abort(1);
  }

  disable_log_notes= 0; /* Startup done, now we can give notes again */

  if (IS_SYSVAR_AUTOSIZE(&server_version_ptr))
    sql_print_information(ER_DEFAULT(ER_STARTUP), my_progname, server_version,
                          ((mysql_socket_getfd(unix_sock) == INVALID_SOCKET) ?
                           (char*) "" : mysqld_unix_port),
                          mysqld_port, MYSQL_COMPILATION_COMMENT);
  else
  {
    char real_server_version[2 * SERVER_VERSION_LENGTH + 10];

    set_server_version(real_server_version, sizeof(real_server_version));
    strcat(real_server_version, "' as '");
    strcat(real_server_version, server_version);

    sql_print_information(ER_DEFAULT(ER_STARTUP), my_progname,
                          real_server_version,
                          ((mysql_socket_getfd(unix_sock) == INVALID_SOCKET) ?
                           (char*) "" : mysqld_unix_port),
                          mysqld_port, MYSQL_COMPILATION_COMMENT);
  }

#ifndef _WIN32
  // try to keep fd=0 busy
  if (please_close_stdin && !freopen("/dev/null", "r", stdin))
  {
    // fall back on failure
    fclose(stdin);
  }
#endif

#if defined(_WIN32) && !defined(EMBEDDED_LIBRARY)
  Service.SetRunning();
#endif

  /* Signal threads waiting for server to be started */
  mysql_mutex_lock(&LOCK_server_started);
  mysqld_server_started= 1;
  mysql_cond_broadcast(&COND_server_started);
  mysql_mutex_unlock(&LOCK_server_started);

  (void)MYSQL_SET_STAGE(0 ,__FILE__, __LINE__);

  /* Memory used when everything is setup */
  start_memory_used= global_status_var.global_memory_used;

#ifdef _WIN32
  handle_connections_win();
#else
  handle_connections_sockets();

  mysql_mutex_lock(&LOCK_start_thread);
  select_thread_in_use=0;
  mysql_cond_broadcast(&COND_start_thread);
  mysql_mutex_unlock(&LOCK_start_thread);
#endif /* _WIN32 */

  /* Shutdown requested */
  char *user= shutdown_user.load(std::memory_order_relaxed);
  sql_print_information(ER_DEFAULT(ER_NORMAL_SHUTDOWN), my_progname,
                        user ? user : "unknown");
  if (user)
    my_free(user);

#ifdef WITH_WSREP
  /* Stop wsrep threads in case they are running. */
  if (wsrep_running_threads > 0)
  {
    wsrep_shutdown_replication();
  }
  /* Release threads if they are waiting in WSREP_SYNC_WAIT_UPTO_GTID */
  wsrep_gtid_server.signal_waiters(0, true);
#endif

  close_connections();
  ha_pre_shutdown();
  clean_up(1);
  sd_notify(0, "STATUS=MariaDB server is down");

  /* (void) pthread_attr_destroy(&connection_attrib); */

  DBUG_PRINT("quit",("Exiting main thread"));

  /*
    Disable the main thread instrumentation,
    to avoid recording events during the shutdown.
  */
  PSI_CALL_delete_current_thread();

#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
  if (start_mode)
    Service.Stop();
  else
  {
    Service.SetShutdownEvent(0);
    if (hEventShutdown)
      CloseHandle(hEventShutdown);
  }
#endif
#if (defined(HAVE_OPENSSL) && !defined(EMBEDDED_LIBRARY))
  ERR_remove_state(0);
#endif
  mysqld_exit(0);
  return 0;
}

#endif /* !EMBEDDED_LIBRARY */


/****************************************************************************
  Main and thread entry function for Win32
  (all this is needed only to run mysqld as a service on WinNT)
****************************************************************************/

#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
void  mysql_service(void *p)
{
  if (my_thread_init())
    abort();
  
  if (use_opt_args)
    win_main(opt_argc, opt_argv);
  else
    win_main(Service.my_argc, Service.my_argv);

  my_thread_end();
}


/* Quote string if it contains space, else copy */

static char *add_quoted_string(char *to, const char *from, char *to_end)
{
  uint length= (uint) (to_end-to);

  if (!strchr(from, ' '))
    return strmake(to, from, length-1);
  return strxnmov(to, length-1, "\"", from, "\"", NullS);
}


/**
  Handle basic handling of services, like installation and removal.

  @param argv	   	        Pointer to argument list
  @param servicename		Internal name of service
  @param displayname		Display name of service (in taskbar ?)
  @param file_path		Path to this program
  @param startup_option	Startup option to mysqld

  @retval 0	option handled
  @retval 1	Could not handle option
*/

static bool
default_service_handling(char **argv,
			 const char *servicename,
			 const char *displayname,
			 const char *file_path,
			 const char *extra_opt,
			 const char *account_name)
{
  char path_and_service[FN_REFLEN+FN_REFLEN+32], *pos, *end;
  const char *opt_delim;
  end= path_and_service + sizeof(path_and_service)-3;

  /* We have to quote filename if it contains spaces */
  pos= add_quoted_string(path_and_service, file_path, end);
  if (extra_opt && *extra_opt)
  {
    /* 
     Add option after file_path. There will be zero or one extra option.  It's 
     assumed to be --defaults-file=file but isn't checked.  The variable (not
     the option name) should be quoted if it contains a string.  
    */
    *pos++= ' ';
    if ((opt_delim= strchr(extra_opt, '=')))
    {
      size_t length= ++opt_delim - extra_opt;
      pos= strnmov(pos, extra_opt, length);
    }
    else
      opt_delim= extra_opt;
    
    pos= add_quoted_string(pos, opt_delim, end);
  }
  /* We must have servicename last */
  *pos++= ' ';
  (void) add_quoted_string(pos, servicename, end);

  if (Service.got_service_option(argv, "install"))
  {
    Service.Install(1, servicename, displayname, path_and_service,
                    account_name);
    return 0;
  }
  if (Service.got_service_option(argv, "install-manual"))
  {
    Service.Install(0, servicename, displayname, path_and_service,
                    account_name);
    return 0;
  }
  if (Service.got_service_option(argv, "remove"))
  {
    Service.Remove(servicename);
    return 0;
  }
  return 1;
}

/* Remove service name from the command line arguments, and pass
resulting command line to the service via opt_args.*/
#include <vector>
static void service_init_cmdline_args(int argc, char **argv)
{
  start_mode= 1;
  use_opt_args= 1;

  if(argc == 1)
  {
    opt_argc= argc;
    opt_argv= argv;
  }
  else
  {
    static std::vector<char *> argv_no_service;
    for (int i= 0; argv[i]; i++)
      argv_no_service.push_back(argv[i]);
    // Remove the last argument, service name
    argv_no_service[argv_no_service.size() - 1]= 0;
    opt_argc= (int)argv_no_service.size() - 1;
    opt_argv= &argv_no_service[0];
  }
  DBUG_ASSERT(!opt_argv[opt_argc]);
}

int mysqld_main(int argc, char **argv)
{
  my_progname= argv[0];

  /*
    When several instances are running on the same machine, we
    need to have an  unique  named  hEventShudown  through the
    application PID e.g.: MySQLShutdown1890; MySQLShutdown2342
  */
  int10_to_str((int) GetCurrentProcessId(),strmov(shutdown_event_name,
                                                  "MySQLShutdown"), 10);

  /* Must be initialized early for comparison of service name */
  system_charset_info= &my_charset_utf8mb3_general_ci;

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  pre_initialize_performance_schema();
#endif /*WITH_PERFSCHEMA_STORAGE_ENGINE */

  if (my_init())
  {
    fprintf(stderr, "my_init() failed.");
    return 1;
  }


  char file_path[FN_REFLEN];
  my_path(file_path, argv[0], "");		      /* Find name in path */
  fn_format(file_path,argv[0],file_path,"",   MY_REPLACE_DIR | MY_UNPACK_FILENAME | MY_RESOLVE_SYMLINKS);


  if (argc == 2)
  {
    if (!default_service_handling(argv, MYSQL_SERVICENAME, MYSQL_SERVICENAME,
      file_path, "", NULL))
      return 0;

    if (Service.IsService(argv[1]))        /* Start an optional service */
    {
      /*
      Only add the service name to the groups read from the config file
      if it's not "MySQL". (The default service name should be 'mysqld'
      but we started a bad tradition by calling it MySQL from the start
      and we are now stuck with it.
      */
      if (my_strcasecmp(system_charset_info, argv[1],"mysql"))
        load_default_groups[load_default_groups_sz-2]= argv[1];
      service_init_cmdline_args(argc, argv);
      Service.Init(argv[1], mysql_service);
      return 0;
    }
  }
  else if (argc == 3) /* install or remove any optional service */
  {
    if (!default_service_handling(argv, argv[2], argv[2], file_path, "",
                                  NULL))
      return 0;
    if (Service.IsService(argv[2]))
    {
      /*
       mysqld was started as
       mysqld --defaults-file=my_path\my.ini service-name
      */
      if (my_strcasecmp(system_charset_info, argv[2],"mysql"))
        load_default_groups[load_default_groups_sz-2]= argv[2];
      service_init_cmdline_args(argc, argv);
      Service.Init(argv[2], mysql_service);
      return 0;
    }
  }
  else if (argc == 4 || argc == 5)
  {
    /*
      This may seem strange, because we handle --local-service while
      preserving 4.1's behavior of allowing any one other argument that is
      passed to the service on startup. (The assumption is that this is
      --defaults-file=file, but that was not enforced in 4.1, so we don't
      enforce it here.)
    */
    const char *extra_opt= NullS;
    const char *account_name = NullS;
    int index;
    for (index = 3; index < argc; index++)
    {
      if (!strcmp(argv[index], "--local-service"))
        account_name= "NT AUTHORITY\\LocalService";
      else
        extra_opt= argv[index];
    }

    if (argc == 4 || account_name)
      if (!default_service_handling(argv, argv[2], argv[2], file_path,
                                    extra_opt, account_name))
        return 0;
  }
  else if (argc == 1 && Service.IsService(MYSQL_SERVICENAME))
  {
    /* start the default service */
    service_init_cmdline_args(argc, argv);
    Service.Init(MYSQL_SERVICENAME, mysql_service);
    return 0;
  }

  /* Start as standalone server */
  Service.my_argc=argc;
  Service.my_argv=argv;
  mysql_service(NULL);
  return 0;
}
#endif


static bool read_init_file(char *file_name)
{
  MYSQL_FILE *file;
  DBUG_ENTER("read_init_file");
  DBUG_PRINT("enter",("name: %s",file_name));
  if (!(file= mysql_file_fopen(key_file_init, file_name,
                               O_RDONLY, MYF(MY_WME))))
    DBUG_RETURN(TRUE);
  bootstrap(file);
  mysql_file_fclose(file, MYF(MY_WME));
  DBUG_RETURN(FALSE);
}


/**
  Increment number of created threads
*/
void inc_thread_created(void)
{
  statistic_increment(thread_created, &LOCK_status);
}

#ifndef EMBEDDED_LIBRARY

/*
   Simple scheduler that use the main thread to handle the request

   NOTES
     This is only used for debugging, when starting mysqld with
     --thread-handling=no-threads or --one-thread
*/

void handle_connection_in_main_thread(CONNECT *connect)
{
  do_handle_one_connection(connect, false);
}


/*
  Scheduler that uses one thread per connection
*/

void create_thread_to_handle_connection(CONNECT *connect)
{
  DBUG_ENTER("create_thread_to_handle_connection");

  if (thread_cache.enqueue(connect))
    DBUG_VOID_RETURN;

  /* Create new thread to handle connection */
  inc_thread_created();
  DBUG_PRINT("info",(("creating thread %lu"), (ulong) connect->thread_id));
  connect->prior_thr_create_utime= microsecond_interval_timer();

  pthread_t tmp;
  if (auto error= mysql_thread_create(key_thread_one_connection,
                                      &tmp, &connection_attrib,
                                      handle_one_connection, (void*) connect))
  {
    char error_message_buff[MYSQL_ERRMSG_SIZE];
    /* purecov: begin inspected */
    DBUG_PRINT("error", ("Can't create thread to handle request (error %d)",
                error));
    my_snprintf(error_message_buff, sizeof(error_message_buff),
                ER_DEFAULT(ER_CANT_CREATE_THREAD), error);
    connect->close_with_error(ER_CANT_CREATE_THREAD, error_message_buff,
                              ER_OUT_OF_RESOURCES);
    DBUG_VOID_RETURN;
    /* purecov: end */
  }
  DBUG_PRINT("info",("Thread created"));
  DBUG_VOID_RETURN;
}


/**
  Create new thread to handle incoming connection.

    This function will create new thread to handle the incoming
    connection.  If there are idle cached threads one will be used.
    'thd' will be pushed into 'threads'.

    In single-threaded mode (\#define ONE_THREAD) connection will be
    handled inside this function.

  @param[in,out] thd    Thread handle of future thread.
*/

void create_new_thread(CONNECT *connect)
{
  DBUG_ENTER("create_new_thread");

  /*
    Don't allow too many connections. We roughly check here that we allow
    only (max_connections + 1) connections.
  */
  if ((*connect->scheduler->connection_count)++ >=
      *connect->scheduler->max_connections + 1)
  {
    DBUG_PRINT("error",("Too many connections"));
    connect->close_with_error(0, NullS, ER_CON_COUNT_ERROR);
    DBUG_VOID_RETURN;
  }

  uint sum= connection_count + extra_connection_count;
  if (sum > max_used_connections)
    max_used_connections= sum;

  /*
    The initialization of thread_id is done in create_embedded_thd() for
    the embedded library.
    TODO: refactor this to avoid code duplication there
  */
  connect->thread_id= next_thread_id();
  connect->scheduler->add_connection(connect);

  DBUG_VOID_RETURN;
}
#endif /* EMBEDDED_LIBRARY */


	/* Handle new connections and spawn new process to handle them */

#ifndef EMBEDDED_LIBRARY

void handle_accepted_socket(MYSQL_SOCKET new_sock, MYSQL_SOCKET sock)
{
#ifdef HAVE_LIBWRAP
  {
    if (mysql_socket_getfd(sock) == mysql_socket_getfd(base_ip_sock) ||
      mysql_socket_getfd(sock) == mysql_socket_getfd(extra_ip_sock))
    {
      struct request_info req;
      signal(SIGCHLD, SIG_DFL);
      request_init(&req, RQ_DAEMON, libwrapName, RQ_FILE,
        mysql_socket_getfd(new_sock), NULL);
      my_fromhost(&req);
      if (!my_hosts_access(&req))
      {
        /*
          This may be stupid but refuse() includes an exit(0)
          which we surely don't want...
          clean_exit() - same stupid thing ...
        */
        syslog(deny_severity, "refused connect from %s",
          my_eval_client(&req));

        /*
          C++ sucks (the gibberish in front just translates the supplied
          sink function pointer in the req structure from a void (*sink)();
          to a void(*sink)(int) if you omit the cast, the C++ compiler
          will cry...
        */
        if (req.sink)
          ((void(*)(int))req.sink)(req.fd);

        (void)mysql_socket_shutdown(new_sock, SHUT_RDWR);
        (void)mysql_socket_close(new_sock);
        /*
          The connection was refused by TCP wrappers.
          There are no details (by client IP) available to update the
          host_cache.
        */
        statistic_increment(connection_errors_tcpwrap, &LOCK_status);
        return;
      }
    }
  }
#endif /* HAVE_LIBWRAP */

  DBUG_PRINT("info", ("Creating CONNECT for new connection"));

  if (auto connect= new CONNECT(new_sock,
                                mysql_socket_getfd(sock) ==
                                mysql_socket_getfd(unix_sock) ?
                                VIO_TYPE_SOCKET : VIO_TYPE_TCPIP,
                                mysql_socket_getfd(sock) ==
                                mysql_socket_getfd(extra_ip_sock) ?
                                extra_thread_scheduler : thread_scheduler))
    create_new_thread(connect);
  else
  {
    /* Connect failure */
    (void)mysql_socket_close(new_sock);
    statistic_increment(aborted_connects, &LOCK_status);
    statistic_increment(connection_errors_internal, &LOCK_status);
  }
}

#ifndef _WIN32
static void set_non_blocking_if_supported(MYSQL_SOCKET sock)
{
#if !defined(NO_FCNTL_NONBLOCK)
  if (!(test_flags & TEST_BLOCKING))
  {
    int flags= fcntl(mysql_socket_getfd(sock), F_GETFL, 0);
#if defined(O_NONBLOCK)
    fcntl(mysql_socket_getfd(sock), F_SETFL, flags | O_NONBLOCK);
#elif defined(O_NDELAY)
    fcntl(mysql_socket_getfd(sock), F_SETFL, flags | O_NDELAY);
#endif
  }
#endif
}


void handle_connections_sockets()
{
  MYSQL_SOCKET sock= mysql_socket_invalid();
  uint error_count=0;
  struct sockaddr_storage cAddr;
  int retval;
#ifdef HAVE_POLL
  int socket_count= 0;
  struct pollfd fds[3]; // for ip_sock, unix_sock and extra_ip_sock
  MYSQL_SOCKET  pfs_fds[3]; // for performance schema
#define setup_fds(X)                    \
    mysql_socket_set_thread_owner(X);             \
    pfs_fds[socket_count]= (X);                   \
    fds[socket_count].fd= mysql_socket_getfd(X);  \
    fds[socket_count].events= POLLIN;   \
    socket_count++
#else
#define setup_fds(X)    FD_SET(mysql_socket_getfd(X),&clientFDs)
  fd_set readFDs,clientFDs;
  FD_ZERO(&clientFDs);
#endif

  DBUG_ENTER("handle_connections_sockets");

  if (mysql_socket_getfd(base_ip_sock) != INVALID_SOCKET)
  {
    setup_fds(base_ip_sock);
    set_non_blocking_if_supported(base_ip_sock);
  }
  if (mysql_socket_getfd(extra_ip_sock) != INVALID_SOCKET)
  {
    setup_fds(extra_ip_sock);
    set_non_blocking_if_supported(extra_ip_sock);
  }
#ifdef HAVE_SYS_UN_H
  setup_fds(unix_sock);
  set_non_blocking_if_supported(unix_sock);
#endif

  sd_notify(0, "READY=1\n"
            "STATUS=Taking your SQL requests now...\n");

  DBUG_PRINT("general",("Waiting for connections."));
  while (!abort_loop)
  {
#ifdef HAVE_POLL
    retval= poll(fds, socket_count, -1);
#else
    readFDs=clientFDs;
    retval= select((int) 0,&readFDs,0,0,0);
#endif

    if (retval < 0)
    {
      if (socket_errno != SOCKET_EINTR)
      {
        /*
          select(2)/poll(2) failed on the listening port.
          There is not much details to report about the client,
          increment the server global status variable.
        */
        statistic_increment(connection_errors_accept, &LOCK_status);
	if (!select_errors++ && !abort_loop)	/* purecov: inspected */
	  sql_print_error("mysqld: Got error %d from select",socket_errno); /* purecov: inspected */
      }
      continue;
    }

    if (abort_loop)
      break;

    /* Is this a new connection request ? */
#ifdef HAVE_POLL
    for (int i= 0; i < socket_count; ++i) 
    {
      if (fds[i].revents & POLLIN)
      {
        sock= pfs_fds[i];
        break;
      }
    }
#else  // HAVE_POLL
    if (FD_ISSET(mysql_socket_getfd(base_ip_sock),&readFDs))
      sock=  base_ip_sock;
    else
    if (FD_ISSET(mysql_socket_getfd(extra_ip_sock),&readFDs))
      sock=  extra_ip_sock;
    else
      sock = unix_sock;
#endif // HAVE_POLL

    for (uint retry=0; retry < MAX_ACCEPT_RETRY; retry++)
    {
      size_socket length= sizeof(struct sockaddr_storage);
      MYSQL_SOCKET new_sock;

      new_sock= mysql_socket_accept(key_socket_client_connection, sock,
                                    (struct sockaddr *)(&cAddr),
                                    &length);
      if (mysql_socket_getfd(new_sock) != INVALID_SOCKET)
        handle_accepted_socket(new_sock, sock);
      else if (socket_errno != SOCKET_EINTR && socket_errno != SOCKET_EAGAIN)
      {
        /*
          accept(2) failed on the listening port.
          There is not much details to report about the client,
          increment the server global status variable.
        */
        statistic_increment(connection_errors_accept, &LOCK_status);
        if ((error_count++ & 255) == 0) // This can happen often
          sql_perror("Error in accept");
        if (socket_errno == SOCKET_ENFILE || socket_errno == SOCKET_EMFILE)
          sleep(1); // Give other threads some time
        break;
      }
    }
  }
  sd_notify(0, "STOPPING=1\n"
            "STATUS=Shutdown in progress\n");
  DBUG_VOID_RETURN;
}

#endif /* _WIN32*/
#endif /* EMBEDDED_LIBRARY */


/****************************************************************************
  Handle start options
******************************************************************************/


/**
  Process command line options flagged as 'early'.
  Some components needs to be initialized as early as possible,
  because the rest of the server initialization depends on them.
  Options that needs to be parsed early includes:
  - the performance schema, when compiled in,
  - options related to the help,
  - options related to the bootstrap
  The performance schema needs to be initialized as early as possible,
  before to-be-instrumented objects of the server are initialized.
*/

int handle_early_options()
{
  int ho_error;
  DYNAMIC_ARRAY all_early_options;

  /* Skip unknown options so that they may be processed later */
  my_getopt_skip_unknown= TRUE;

  /* prepare all_early_options array */
  my_init_dynamic_array(PSI_NOT_INSTRUMENTED, &all_early_options,
                        sizeof(my_option), 100, 25, MYF(0));
  add_many_options(&all_early_options, pfs_early_options,
                  array_elements(pfs_early_options));
  sys_var_add_options(&all_early_options, sys_var::PARSE_EARLY);
  add_terminator(&all_early_options);

  ho_error= handle_options(&remaining_argc, &remaining_argv,
                           (my_option*)(all_early_options.buffer),
                           mysqld_get_one_option);
  if (ho_error == 0)
  {
    /* Add back the program name handle_options removes */
    remaining_argc++;
    remaining_argv--;
  }

  delete_dynamic(&all_early_options);

  return ho_error;
}

/**
  System variables are automatically command-line options (few
  exceptions are documented in sys_var.h), so don't need
  to be listed here.
*/

struct my_option my_long_options[]=
{
  {"help", '?', "Display this help and exit.", 
   &opt_help, &opt_help, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
   0, 0},
  {"allow-suspicious-udfs", 0,
   "Allows use of UDFs consisting of only one symbol xxx() "
   "without corresponding xxx_init() or xxx_deinit(). That also means "
   "that one can load any function from any library, for example exit() "
   "from libc.so",
   &opt_allow_suspicious_udfs, &opt_allow_suspicious_udfs,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"ansi", 'a', "Use ANSI SQL syntax instead of MySQL syntax. This mode "
   "will also set transaction isolation level 'serializable'.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  /*
    Because Sys_var_bit does not support command-line options, we need to
    explicitly add one for --autocommit
  */
  {"autocommit", 0, "Set default value for autocommit (0 or 1)",
   &opt_autocommit, &opt_autocommit, 0,
   GET_BOOL, OPT_ARG, 1, 0, 0, 0, 0, NULL},
  {"binlog-do-db", OPT_BINLOG_DO_DB,
   "Tells the master it should log updates for the specified database, "
   "and exclude all others not explicitly mentioned.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"binlog-ignore-db", OPT_BINLOG_IGNORE_DB,
   "Tells the master that updates to the given database should not be logged to the binary log.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"binlog-row-event-max-size", 0,
   "The maximum size of a row-based binary log event in bytes. Rows will be "
   "grouped into events smaller than this size if possible. "
   "The value has to be a multiple of 256.",
   &opt_binlog_rows_event_max_size, &opt_binlog_rows_event_max_size,
   0, GET_ULONG, REQUIRED_ARG,
   /* def_value */ 8192, /* min_value */  256, /* max_value */ UINT_MAX32-1,
   /* sub_size */     0, /* block_size */ 256,
   /* app_type */ 0
  },
#ifndef DISABLE_GRANT_OPTIONS
  {"bootstrap", OPT_BOOTSTRAP, "Used by mysql installation scripts.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"character-set-client-handshake", 0,
   "Don't ignore client side character set value sent during handshake.",
   &opt_character_set_client_handshake,
   &opt_character_set_client_handshake,
    0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
  {"character-set-filesystem", 0,
   "Set the filesystem character set.",
   &character_set_filesystem_name,
   &character_set_filesystem_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
  {"character-set-server", 'C', "Set the default character set.",
   &default_character_set_name, &default_character_set_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
  {"chroot", 'r', "Chroot mysqld daemon during startup.",
   &mysqld_chroot, &mysqld_chroot, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"collation-server", 0, "Set the default collation.",
   &default_collation_name, &default_collation_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
  {"console", OPT_CONSOLE, "Write error output on screen; don't remove the console window on windows.",
   &opt_console, &opt_console, 0, GET_BOOL, NO_ARG, 0, 0, 0,
   0, 0, 0},
  {"core-file", OPT_WANT_CORE, "Write core on errors.", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef DBUG_OFF
  {"debug", '#', "Built in DBUG debugger. Disabled in this build.",
   &current_dbug_option, &current_dbug_option, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
#endif
#ifdef HAVE_REPLICATION
  {"debug-abort-slave-event-count", 0,
   "Option used by mysql-test for debugging and testing of replication.",
   &abort_slave_event_count,  &abort_slave_event_count,
   0, GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif /* HAVE_REPLICATION */
#ifndef DBUG_OFF
  {"debug-assert", 0,
   "Allow DBUG_ASSERT() to invoke assert()",
   &my_assert, &my_assert,
   0, GET_BOOL, OPT_ARG, 1, 0, 0, 0, 0, 0},
  {"debug-assert-on-error", 0,
   "Do an assert in various functions if we get a fatal error",
   &my_assert_on_error, &my_assert_on_error,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"debug-assert-if-crashed-table", 0,
   "Do an assert in handler::print_error() if we get a crashed table",
   &debug_assert_if_crashed_table, &debug_assert_if_crashed_table,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
#ifdef HAVE_REPLICATION
  {"debug-disconnect-slave-event-count", 0,
   "Option used by mysql-test for debugging and testing of replication.",
   &disconnect_slave_event_count, &disconnect_slave_event_count,
   0, GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif /* HAVE_REPLICATION */
  {"debug-exit-info", 'T', "Used for debugging. Use at your own risk.",
   0, 0, 0, GET_LONG, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"debug-gdb", 0,
   "Set up signals usable for debugging.",
   &opt_debugging, &opt_debugging,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_REPLICATION
  {"debug-max-binlog-dump-events", 0,
   "Option used by mysql-test for debugging and testing of replication.",
   &max_binlog_dump_events, &max_binlog_dump_events, 0,
   GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif /* HAVE_REPLICATION */
  {"debug-no-sync", 0,
   "Disables system sync calls. Only for running tests or debugging!",
   &my_disable_sync, &my_disable_sync, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_REPLICATION
  {"debug-sporadic-binlog-dump-fail", 0,
   "Option used by mysql-test for debugging and testing of replication.",
   &opt_sporadic_binlog_dump_fail,
   &opt_sporadic_binlog_dump_fail, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
   0},
#endif /* HAVE_REPLICATION */
#ifndef DBUG_OFF
  {"debug-assert-on-not-freed-memory", 0,
   "Assert if we found problems with memory allocation",
   &debug_assert_on_not_freed_memory,
   &debug_assert_on_not_freed_memory, 0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0,
   0},
#endif /* DBUG_OFF */
  /* default-storage-engine should have "MyISAM" as def_value. Instead
     of initializing it here it is done in init_common_variables() due
     to a compiler bug in Sun Studio compiler. */
  {"default-storage-engine", 0, "The default storage engine for new tables",
   &default_storage_engine, 0, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0 },
  {"default-tmp-storage-engine", 0,
    "The default storage engine for user-created temporary tables",
   &default_tmp_storage_engine, 0, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0 },
  {"default-time-zone", 0, "Set the default time zone.",
   &default_tz_name, &default_tz_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
#if defined(ENABLED_DEBUG_SYNC)
  {"debug-sync-timeout", OPT_DEBUG_SYNC_TIMEOUT,
   "Enable the debug sync facility "
   "and optionally specify a default wait timeout in seconds. "
   "A zero value keeps the facility disabled.",
   &opt_debug_sync_timeout, 0,
   0, GET_UINT, OPT_ARG, 0, 0, UINT_MAX, 0, 0, 0},
#endif /* defined(ENABLED_DEBUG_SYNC) */
#ifdef HAVE_OPENSSL
  {"des-key-file", 0,
   "Load keys for des_encrypt() and des_encrypt from given file.",
   &des_key_file, &des_key_file, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
#endif /* HAVE_OPENSSL */
#ifdef HAVE_STACKTRACE
  {"stack-trace", 0 , "Print a symbolic stack trace on failure",
   &opt_stack_trace, &opt_stack_trace, 0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
#endif /* HAVE_STACKTRACE */
  {"enforce-storage-engine", 0, "Force the use of a storage engine for new tables",
   &enforced_storage_engine, 0, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0 },
  {"external-locking", 0, "Use system (external) locking (disabled by "
   "default).  With this option enabled you can run myisamchk to test "
   "(not repair) tables while the MySQL server is running. Disable with "
   "--skip-external-locking.", &opt_external_locking, &opt_external_locking,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  /* We must always support the next option to make scripts like mysqltest
     easier to do */
  {"flashback", 0,
   "Setup the server to use flashback. This enables binary log in row mode and will enable extra logging for DDL's needed by flashback feature",
   &opt_support_flashback, &opt_support_flashback,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"gdb", 0,
   "Set up signals usable for debugging. Deprecated, use --debug-gdb instead.",
   &opt_debugging, &opt_debugging,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"gtid-pos-auto-engines", 0,
   "List of engines for which to automatically create a "
   "mysql.gtid_slave_pos_ENGINE table, if a transaction using that engine "
   "is replicated. This can be used to avoid introducing cross-engine "
   "transactions, if engines are used different from that used by table "
   "mysql.gtid_slave_pos",
   &gtid_pos_auto_engines, 0, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0 },
#ifdef HAVE_SOLARIS_LARGE_PAGES
  {"super-large-pages", 0, "Enable support for super large pages.",
   &opt_super_large_pages, &opt_super_large_pages, 0,
   GET_BOOL, OPT_ARG, 0, 0, 1, 0, 1, 0},
#endif
  {"language", 'L',
   "Client error messages in given language. May be given as a full path. "
   "Deprecated. Use --lc-messages-dir instead.",
   0, 0, 0,
   GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"lc-messages", 0,
   "Set the language used for the error messages.",
   &lc_messages, &lc_messages, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0 },
  {"lc-time-names", 0,
   "Set the language used for the month names and the days of the week.",
   &lc_time_names_name, &lc_time_names_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
  {"log-basename", OPT_LOG_BASENAME,
   "Basename for all log files and the .pid file. This sets all log file "
   "names at once (in 'datadir') and is normally the only option you need "
   "for specifying log files. Sets names for --log-bin, --log-bin-index, "
   "--relay-log, --relay-log-index, --general-log-file, "
   "--log-slow-query-log-file, --log-error-file, and --pid-file",
   &opt_log_basename, &opt_log_basename, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"log-bin", OPT_BIN_LOG,
   "Log update queries in binary format. Optional argument should be name for "
   "binary log. If not given "
   "'datadir'/'log-basename'-bin or 'datadir'/mysql-bin will be used (the later if "
   "--log-basename is not specified). We strongly recommend to use either "
   "--log-basename or specify a filename to ensure that replication doesn't "
   "stop if the real hostname of the computer changes.",
   &opt_bin_logname, &opt_bin_logname, 0, GET_STR,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"log-bin-index", 0,
   "File that holds the names for last binary log files.",
   &opt_binlog_index_name, &opt_binlog_index_name, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"relay-log-index", 0,
   "The location and name to use for the file that keeps a list of the last "
   "relay logs",
   &opt_relaylog_index_name, &opt_relaylog_index_name, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"log-isam", OPT_ISAM_LOG, "Log all MyISAM changes to file.",
   &myisam_log_filename, &myisam_log_filename, 0, GET_STR,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"log-short-format", 0,
   "Don't log extra information to update and slow-query logs.",
   &opt_short_log_format, &opt_short_log_format,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"log-tc", 0,
   "Path to transaction coordinator log (used for transactions that affect "
   "more than one storage engine, when binary log is disabled).",
   &opt_tc_log_file, &opt_tc_log_file, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"master-info-file", 0,
   "The location and name of the file that remembers the master and where "
   "the I/O replication thread is in the master's binlogs. Defaults to "
   "master.info",
   &master_info_file, &master_info_file, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"master-retry-count", 0,
   "The number of tries the slave will make to connect to the master before giving up.",
   &master_retry_count, &master_retry_count, 0, GET_ULONG,
   REQUIRED_ARG, 3600*24, 0, 0, 0, 0, 0},
#ifdef HAVE_REPLICATION
  {"init-rpl-role", 0, "Set the replication role",
   &rpl_status, &rpl_status, &rpl_role_typelib,
   GET_ENUM, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif /* HAVE_REPLICATION */
  {"memlock", 0, "Lock mysqld in memory.", &locked_in_memory,
   &locked_in_memory, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"old-style-user-limits", 0,
   "Enable old-style user limits (before 5.0.3, user resources were counted "
   "per each user+host vs. per account).",
   &opt_old_style_user_limits, &opt_old_style_user_limits,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"port-open-timeout", 0,
   "Maximum time in seconds to wait for the port to become free. "
   "(Default: No wait).", &mysqld_port_timeout, &mysqld_port_timeout, 0,
   GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-do-db", OPT_REPLICATE_DO_DB,
   "Tells the slave thread to restrict replication to the specified database. "
   "To specify more than one database, use the directive multiple times, "
   "once for each database. Note that this will only work if you do not use "
   "cross-database queries such as UPDATE some_db.some_table SET foo='bar' "
   "while having selected a different or no database. If you need cross "
   "database updates to work, make sure you have 3.23.28 or later, and use "
   "replicate-wild-do-table=db_name.%.",
   0, 0, 0, GET_STR | GET_ASK_ADDR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-do-table", OPT_REPLICATE_DO_TABLE,
   "Tells the slave thread to restrict replication to the specified table. "
   "To specify more than one table, use the directive multiple times, once "
   "for each table. This will work for cross-database updates, in contrast "
   "to replicate-do-db.", 0, 0, 0, GET_STR | GET_ASK_ADDR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-ignore-db", OPT_REPLICATE_IGNORE_DB,
   "Tells the slave thread to not replicate to the specified database. To "
   "specify more than one database to ignore, use the directive multiple "
   "times, once for each database. This option will not work if you use "
   "cross database updates. If you need cross database updates to work, "
   "make sure you have 3.23.28 or later, and use replicate-wild-ignore-"
   "table=db_name.%. ", 0, 0, 0, GET_STR | GET_ASK_ADDR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-ignore-table", OPT_REPLICATE_IGNORE_TABLE,
   "Tells the slave thread to not replicate to the specified table. To specify "
   "more than one table to ignore, use the directive multiple times, once for "
   "each table. This will work for cross-database updates, in contrast to "
   "replicate-ignore-db.", 0, 0, 0, GET_STR | GET_ASK_ADDR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-rewrite-db", OPT_REPLICATE_REWRITE_DB,
   "Updates to a database with a different name than the original. Example: "
   "replicate-rewrite-db=master_db_name->slave_db_name.",
   0, 0, 0, GET_STR | GET_ASK_ADDR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_REPLICATION
  {"replicate-same-server-id", 0,
   "In replication, if set to 1, do not skip events having our server id. "
   "Default value is 0 (to break infinite loops in circular replication). "
   "Can't be set to 1 if --log-slave-updates is used.",
   &replicate_same_server_id, &replicate_same_server_id,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"replicate-wild-do-table", OPT_REPLICATE_WILD_DO_TABLE,
   "Tells the slave thread to restrict replication to the tables that match "
   "the specified wildcard pattern. To specify more than one table, use the "
   "directive multiple times, once for each table. This will work for cross-"
   "database updates. Example: replicate-wild-do-table=foo%.bar% will "
   "replicate only updates to tables in all databases that start with foo "
   "and whose table names start with bar.",
   0, 0, 0, GET_STR | GET_ASK_ADDR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-wild-ignore-table", OPT_REPLICATE_WILD_IGNORE_TABLE,
   "Tells the slave thread to not replicate to the tables that match the "
   "given wildcard pattern. To specify more than one table to ignore, use "
   "the directive multiple times, once for each table. This will work for "
   "cross-database updates. Example: replicate-wild-ignore-table=foo%.bar% "
   "will not do updates to tables in databases that start with foo and whose "
   "table names start with bar.",
   0, 0, 0, GET_STR | GET_ASK_ADDR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"safe-mode", OPT_SAFE, "Skip some optimize stages (for testing). Deprecated.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"safe-user-create", 0,
   "Don't allow new user creation by the user who has no write privileges to the mysql.user table.",
   &opt_safe_user_create, &opt_safe_user_create, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"show-slave-auth-info", 0,
   "Show user and password in SHOW SLAVE HOSTS on this master.",
   &opt_show_slave_auth_info, &opt_show_slave_auth_info, 0,
   GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"silent-startup", OPT_SILENT, "Don't print [Note] to the error log during startup.",
   &opt_silent_startup, &opt_silent_startup, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifndef DISABLE_GRANT_OPTIONS
  {"skip-grant-tables", 0,
   "Start without grant tables. This gives all users FULL ACCESS to all tables.",
   &opt_noacl, &opt_noacl, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
   0},
#endif
  {"skip-host-cache", OPT_SKIP_HOST_CACHE, "Don't cache host names.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-slave-start", 0,
   "If set, slave is not autostarted.", &opt_skip_slave_start,
   &opt_skip_slave_start, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_REPLICATION
  {"slave-parallel-mode", OPT_SLAVE_PARALLEL_MODE,
   "Controls what transactions are applied in parallel when using "
   "--slave-parallel-threads. Possible values: \"optimistic\" tries to "
   "apply most transactional DML in parallel, and handles any conflicts "
   "with rollback and retry. \"conservative\" limits parallelism in an "
   "effort to avoid any conflicts. \"aggressive\" tries to maximise the "
   "parallelism, possibly at the cost of increased conflict rate. "
   "\"minimal\" only parallelizes the commit steps of transactions. "
   "\"none\" disables parallel apply completely.",
   &opt_slave_parallel_mode, &opt_slave_parallel_mode,
   &slave_parallel_mode_typelib, GET_ENUM | GET_ASK_ADDR, REQUIRED_ARG,
   SLAVE_PARALLEL_CONSERVATIVE, 0, 0, 0, 0, 0},
#endif
#if defined(_WIN32) && !defined(EMBEDDED_LIBRARY)
  {"slow-start-timeout", 0,
   "Maximum number of milliseconds that the service control manager should wait "
   "before trying to kill the windows service during startup"
   "(Default: 15000).", &slow_start_timeout, &slow_start_timeout, 0,
   GET_ULONG, REQUIRED_ARG, 15000, 0, 0, 0, 0, 0},
#endif
#ifdef HAVE_OPENSSL
  {"ssl", 0,
   "Enable SSL for connection (automatically enabled if an ssl option is used).",
   &opt_use_ssl, &opt_use_ssl, 0, GET_BOOL, OPT_ARG, 0, 0, 0,
   0, 0, 0},
#endif
#ifdef __WIN__
  {"standalone", 0,
  "Dummy option to start as a standalone program (NT).", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"symbolic-links", 's', "Enable symbolic link support.",
   &my_use_symdir, &my_use_symdir, 0, GET_BOOL, NO_ARG,
   /*
     The system call realpath() produces warnings under valgrind and
     purify. These are not suppressed: instead we disable symlinks
     option if compiled with valgrind support.
     Also disable by default on Windows, due to high overhead for checking .sym 
     files.
   */
   IF_VALGRIND(0,IF_WIN(0,1)), 0, 0, 0, 0, 0},
  {"sysdate-is-now", 0,
   "Non-default option to alias SYSDATE() to NOW() to make it safe-replicable. "
   "Since 5.0, SYSDATE() returns a `dynamic' value different for different "
   "invocations, even within the same statement.",
   &global_system_variables.sysdate_is_now,
   0, 0, GET_BOOL, NO_ARG, 0, 0, 1, 0, 1, 0},
  {"tc-heuristic-recover", 0,
   "Decision to use in heuristic recover process",
   &tc_heuristic_recover, &tc_heuristic_recover,
   &tc_heuristic_recover_typelib, GET_ENUM, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"temp-pool", 0,
#if (ENABLE_TEMP_POOL)
   "Using this option will cause most temporary files created to use a small "
   "set of names, rather than a unique name for each new file. Deprecated.",
#else
   "This option is ignored on this OS.",
#endif
   &use_temp_pool, &use_temp_pool, 0, GET_BOOL, NO_ARG, 0,
   0, 0, 0, 0, 0},
  {"transaction-isolation", 0,
   "Default transaction isolation level",
   &global_system_variables.tx_isolation,
   &global_system_variables.tx_isolation, &tx_isolation_typelib,
   GET_ENUM, REQUIRED_ARG, ISO_REPEATABLE_READ, 0, 0, 0, 0, 0},
  {"transaction-read-only", 0,
   "Default transaction access mode. "
   "True if transactions are read-only.",
   &global_system_variables.tx_read_only,
   &global_system_variables.tx_read_only, 0,
   GET_BOOL, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"user", 'u', "Run mysqld daemon as user.", 0, 0, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"verbose", 'v', "Used with --help option for detailed help.",
   &opt_verbose, &opt_verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"version", 'V', "Output version information and exit.", 0, 0, 0, GET_STR,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"plugin-load", OPT_PLUGIN_LOAD,
   "Semicolon-separated list of plugins to load, where each plugin is "
   "specified as ether a plugin_name=library_file pair or only a library_file. "
   "If the latter case, all plugins from a given library_file will be loaded.",
   0, 0, 0,
   GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"plugin-load-add", OPT_PLUGIN_LOAD_ADD,
   "Optional semicolon-separated list of plugins to load. This option adds "
   "to the list specified by --plugin-load in an incremental way. "
   "It can be specified many times, adding more plugins every time.",
   0, 0, 0,
    GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"table_cache", 0, "Deprecated; use --table-open-cache instead.",
   &tc_size, &tc_size, 0, GET_ULONG,
   REQUIRED_ARG, TABLE_OPEN_CACHE_DEFAULT, 1, 512*1024L, 0, 1, 0},
#ifdef WITH_WSREP
  {"wsrep-new-cluster", 0, "Bootstrap a cluster. It works by overriding the "
   "current value of wsrep_cluster_address. It is recommended not to add this "
   "option to the config file as this will trigger bootstrap on every server "
   "start.", &wsrep_new_cluster, &wsrep_new_cluster, 0, GET_BOOL, NO_ARG,
   0, 0, 0, 0, 0, 0},
#endif
};

static int show_queries(THD *thd, SHOW_VAR *var, char *buff,
                        enum enum_var_type scope)
{
  var->type= SHOW_LONGLONG;
  var->value= &thd->query_id;
  return 0;
}


static int show_net_compression(THD *thd, SHOW_VAR *var, char *buff,
                                enum enum_var_type scope)
{
  var->type= SHOW_MY_BOOL;
  var->value= &thd->net.compress;
  return 0;
}

static int show_starttime(THD *thd, SHOW_VAR *var, char *buff,
                          enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
  *((long *)buff)= (long) (thd->query_start() - server_start_time);
  return 0;
}

#ifdef ENABLED_PROFILING
static int show_flushstatustime(THD *thd, SHOW_VAR *var, char *buff,
                                enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
  *((long *)buff)= (long) (thd->query_start() - flush_status_time);
  return 0;
}
#endif

#ifdef HAVE_REPLICATION
static int show_rpl_status(THD *thd, SHOW_VAR *var, char *buff,
                           enum enum_var_type scope)
{
  var->type= SHOW_CHAR;
  var->value= const_cast<char*>(rpl_status_type[(int)rpl_status]);
  return 0;
}

static int show_slave_running(THD *thd, SHOW_VAR *var, char *buff,
                              enum enum_var_type scope)
{
  Master_info *mi= NULL;
  bool UNINIT_VAR(tmp);

  var->type= SHOW_MY_BOOL;
  var->value= buff;

  if ((mi= get_master_info(&thd->variables.default_master_connection,
                           Sql_condition::WARN_LEVEL_NOTE)))
  {
    tmp= (my_bool) (mi->slave_running == MYSQL_SLAVE_RUN_READING &&
                    mi->rli.slave_running != MYSQL_SLAVE_NOT_RUN);
    mi->release();
  }
  if (mi)
    *((my_bool *)buff)= tmp;
  else
    var->type= SHOW_UNDEF;
  return 0;
}


/* How many masters this slave is connected to */


static int show_slaves_running(THD *thd, SHOW_VAR *var, char *buff)
{
  var->type= SHOW_LONGLONG;
  var->value= buff;

  *((longlong *)buff)= any_slave_sql_running(false);

  return 0;
}


static int show_slave_received_heartbeats(THD *thd, SHOW_VAR *var, char *buff,
                                          enum enum_var_type scope)
{
  Master_info *mi;

  var->type= SHOW_LONGLONG;
  var->value= buff;

  if ((mi= get_master_info(&thd->variables.default_master_connection,
                           Sql_condition::WARN_LEVEL_NOTE)))
  {
    *((longlong *)buff)= mi->received_heartbeats;
    mi->release();
  }
  else
    var->type= SHOW_UNDEF;
  return 0;
}


static int show_heartbeat_period(THD *thd, SHOW_VAR *var, char *buff,
                                 enum enum_var_type scope)
{
  Master_info *mi;

  var->type= SHOW_CHAR;
  var->value= buff;

  if ((mi= get_master_info(&thd->variables.default_master_connection,
                           Sql_condition::WARN_LEVEL_NOTE)))
  {
    sprintf(buff, "%.3f", mi->heartbeat_period);
    mi->release();
  }
  else
    var->type= SHOW_UNDEF;
  return 0;
}


#endif /* HAVE_REPLICATION */

static int show_open_tables(THD *thd, SHOW_VAR *var, char *buff,
                            enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
  *((long *) buff)= (long) tc_records();
  return 0;
}

static int show_prepared_stmt_count(THD *thd, SHOW_VAR *var, char *buff,
                                    enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
  mysql_mutex_lock(&LOCK_prepared_stmt_count);
  *((long *)buff)= (long)prepared_stmt_count;
  mysql_mutex_unlock(&LOCK_prepared_stmt_count);
  return 0;
}

static int show_table_definitions(THD *thd, SHOW_VAR *var, char *buff,
                                  enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
  *((long *) buff)= (long) tdc_records();
  return 0;
}


#if defined(HAVE_OPENSSL) && !defined(EMBEDDED_LIBRARY)

/*
   Functions relying on SSL
   Note: In the show_ssl_* functions, we need to check if we have a
         valid vio-object since this isn't always true, specifically
         when session_status or global_status is requested from
         inside an Event.
 */

static int show_ssl_get_version(THD *thd, SHOW_VAR *var, char *buff,
                                enum enum_var_type scope)
{
  var->type= SHOW_CHAR;
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    var->value= const_cast<char*>(SSL_get_version((SSL*) thd->net.vio->ssl_arg));
  else
    var->value= const_cast<char*>("");
  return 0;
}

static int show_ssl_get_default_timeout(THD *thd, SHOW_VAR *var, char *buff,
                                        enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    *((long *)buff)= (long)SSL_get_default_timeout((SSL*)thd->net.vio->ssl_arg);
  else
    *((long *)buff)= 0;
  return 0;
}

static int show_ssl_get_verify_mode(THD *thd, SHOW_VAR *var, char *buff,
                                    enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
#ifndef HAVE_WOLFSSL
  if( thd->net.vio && thd->net.vio->ssl_arg )
    *((long *)buff)= (long)SSL_get_verify_mode((SSL*)thd->net.vio->ssl_arg);
  else
    *((long *)buff)= 0;
#else
  *((long *)buff)= 0;
#endif
  return 0;
}

static int show_ssl_get_verify_depth(THD *thd, SHOW_VAR *var, char *buff,
                                     enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    *((long *)buff)= (long)SSL_get_verify_depth((SSL*)thd->net.vio->ssl_arg);
  else
    *((long *)buff)= 0;

  return 0;
}

static int show_ssl_get_cipher(THD *thd, SHOW_VAR *var, char *buff,
                               enum enum_var_type scope)
{
  var->type= SHOW_CHAR;
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    var->value= const_cast<char*>(SSL_get_cipher((SSL*) thd->net.vio->ssl_arg));
  else
    var->value= const_cast<char*>("");
  return 0;
}

static int show_ssl_get_cipher_list(THD *thd, SHOW_VAR *var, char *buff,
                                    enum enum_var_type scope)
{
  var->type= SHOW_CHAR;
  var->value= buff;
  if (thd->vio_ok() && thd->net.vio->ssl_arg)
  {
    int i;
    const char *p;
    char *end= buff + SHOW_VAR_FUNC_BUFF_SIZE;
    for (i=0; (p= SSL_get_cipher_list((SSL*) thd->net.vio->ssl_arg,i)) &&
               buff < end; i++)
    {
      buff= strnmov(buff, p, end-buff-1);
      *buff++= ':';
    }
    if (i)
      buff--;
  }
  *buff=0;
  return 0;
}

#define SHOW_FNAME(name)                        \
    rpl_semi_sync_master_show_##name

#define DEF_SHOW_FUNC(name, show_type)                                       \
    static  int SHOW_FNAME(name)(MYSQL_THD thd, SHOW_VAR *var, char *buff)   \
    {                                                                        \
      repl_semisync_master.set_export_stats();                                 \
      var->type= show_type;                                                  \
      var->value= (char *)&rpl_semi_sync_master_##name;                      \
      return 0;                                                              \
    }

DEF_SHOW_FUNC(status, SHOW_BOOL)
DEF_SHOW_FUNC(clients, SHOW_LONG)
DEF_SHOW_FUNC(wait_sessions, SHOW_LONG)
DEF_SHOW_FUNC(trx_wait_time, SHOW_LONGLONG)
DEF_SHOW_FUNC(trx_wait_num, SHOW_LONGLONG)
DEF_SHOW_FUNC(net_wait_time, SHOW_LONGLONG)
DEF_SHOW_FUNC(net_wait_num, SHOW_LONGLONG)
DEF_SHOW_FUNC(avg_net_wait_time, SHOW_LONG)
DEF_SHOW_FUNC(avg_trx_wait_time, SHOW_LONG)


static char *
my_asn1_time_to_string(const ASN1_TIME *time, char *buf, size_t len)
{
  int n_read;
  char *res= NULL;
  BIO *bio= BIO_new(BIO_s_mem());

  if (bio == NULL)
    return NULL;

  if (!ASN1_TIME_print(bio, const_cast<ASN1_TIME*>(time)))
    goto end;

  n_read= BIO_read(bio, buf, (int) (len - 1));

  if (n_read > 0)
  {
    buf[n_read]= 0;
    res= buf;
  }

end:
  BIO_free(bio);
  return res;
}


/**
  Handler function for the 'ssl_get_server_not_before' variable

  @param      thd  the mysql thread structure
  @param      var  the data for the variable
  @param[out] buf  the string to put the value of the variable into

  @return          status
  @retval     0    success
*/

static int
show_ssl_get_server_not_before(THD *thd, SHOW_VAR *var, char *buff,
                               enum enum_var_type scope)
{
  var->type= SHOW_CHAR;
  if(thd->vio_ok() && thd->net.vio->ssl_arg)
  {
    SSL *ssl= (SSL*) thd->net.vio->ssl_arg;
    X509 *cert= SSL_get_certificate(ssl);
    const ASN1_TIME *not_before= X509_get0_notBefore(cert);

    var->value= my_asn1_time_to_string(not_before, buff,
                                       SHOW_VAR_FUNC_BUFF_SIZE);
    if (!var->value)
      return 1;
    var->value= buff;
  }
  else
    var->value= empty_c_string;
  return 0;
}


/**
  Handler function for the 'ssl_get_server_not_after' variable

  @param      thd  the mysql thread structure
  @param      var  the data for the variable
  @param[out] buf  the string to put the value of the variable into

  @return          status
  @retval     0    success
*/

static int
show_ssl_get_server_not_after(THD *thd, SHOW_VAR *var, char *buff,
                              enum enum_var_type scope)
{
  var->type= SHOW_CHAR;
  if(thd->vio_ok() && thd->net.vio->ssl_arg)
  {
    SSL *ssl= (SSL*) thd->net.vio->ssl_arg;
    X509 *cert= SSL_get_certificate(ssl);
    const ASN1_TIME *not_after= X509_get0_notAfter(cert);

    var->value= my_asn1_time_to_string(not_after, buff,
                                       SHOW_VAR_FUNC_BUFF_SIZE);
    if (!var->value)
      return 1;
  }
  else
    var->value= empty_c_string;
  return 0;
}

#endif /* HAVE_OPENSSL && !EMBEDDED_LIBRARY */

static int show_default_keycache(THD *thd, SHOW_VAR *var, void *buff,
                                 system_status_var *, enum_var_type)
{
  struct st_data {
    KEY_CACHE_STATISTICS stats;
    SHOW_VAR var[9];
  } *data;
  SHOW_VAR *v;

  data=(st_data *)buff;
  v= data->var;

  var->type= SHOW_ARRAY;
  var->value= v;

  get_key_cache_statistics(dflt_key_cache, 0, &data->stats);

#define set_one_keycache_var(X,Y)       \
  v->name= X;                           \
  v->type= SHOW_LONGLONG;               \
  v->value= &data->stats.Y;      \
  v++;

  set_one_keycache_var("blocks_not_flushed", blocks_changed);
  set_one_keycache_var("blocks_unused",      blocks_unused);
  set_one_keycache_var("blocks_used",        blocks_used);
  set_one_keycache_var("blocks_warm",        blocks_warm);
  set_one_keycache_var("read_requests",      read_requests);
  set_one_keycache_var("reads",              reads);
  set_one_keycache_var("write_requests",     write_requests);
  set_one_keycache_var("writes",             writes);

  v->name= 0;

  DBUG_ASSERT((char*)(v+1) <= static_cast<char*>(buff) + SHOW_VAR_FUNC_BUFF_SIZE);

#undef set_one_keycache_var

  return 0;
}


static int show_memory_used(THD *thd, SHOW_VAR *var, char *buff,
                            struct system_status_var *status_var,
                            enum enum_var_type scope)
{
  var->type= SHOW_LONGLONG;
  var->value= buff;
  if (scope == OPT_GLOBAL)
  {
    calc_sum_of_all_status_if_needed(status_var);
    *(longlong*) buff= (status_var->global_memory_used +
                        status_var->local_memory_used);
  }
  else
    *(longlong*) buff= status_var->local_memory_used;
  return 0;
}


#ifndef DBUG_OFF
static int debug_status_func(THD *thd, SHOW_VAR *var, void *buff,
                             system_status_var *, enum_var_type)
{
#define add_var(X,Y,Z)                  \
  v->name= X;                           \
  v->value= (char*)Y;                   \
  v->type= Z;                           \
  v++;

  var->type= SHOW_ARRAY;
  var->value= buff;

  SHOW_VAR *v= (SHOW_VAR *)buff;

  if (_db_keyword_(0, "role_merge_stats", 1))
  {
    static SHOW_VAR roles[]= {
      {"global",  &role_global_merges,  SHOW_ULONG},
      {"db",      &role_db_merges,      SHOW_ULONG},
      {"table",   &role_table_merges,   SHOW_ULONG},
      {"column",  &role_column_merges,  SHOW_ULONG},
      {"routine", &role_routine_merges, SHOW_ULONG},
      {NullS, NullS, SHOW_LONG}
    };

    add_var("role_merges", roles, SHOW_ARRAY);
  }

  v->name= 0;

#undef add_var

  return 0;
}
#endif

#ifdef HAVE_POOL_OF_THREADS
static int show_threadpool_idle_threads(THD *thd, SHOW_VAR *var, char *buff,
                                 enum enum_var_type scope)
{
  var->type= SHOW_INT;
  var->value= buff;
  *(int *)buff= tp_get_idle_thread_count(); 
  return 0;
}


static int show_threadpool_threads(THD *thd, SHOW_VAR *var, char *buff,
                                   enum enum_var_type scope)
{
  var->type= SHOW_INT;
  var->value= buff;
  *(reinterpret_cast<int*>(buff))= tp_get_thread_count();
  return 0;
}
#endif


static int show_cached_thread_count(THD *thd, SHOW_VAR *var, char *buff,
                                    enum enum_var_type scope)
{
  var->type= SHOW_LONG;
  var->value= buff;
  *(reinterpret_cast<ulong*>(buff))= thread_cache.size();
  return 0;
}


/*
  Variables shown by SHOW STATUS in alphabetical order
*/

SHOW_VAR status_vars[]= {
  {"Aborted_clients",          (char*) &aborted_threads,        SHOW_LONG},
  {"Aborted_connects",         (char*) &aborted_connects,       SHOW_LONG},
  {"Aborted_connects_preauth", (char*) &aborted_connects_preauth, SHOW_LONG},
  {"Acl",                      (char*) acl_statistics,          SHOW_ARRAY},
  {"Access_denied_errors",     (char*) offsetof(STATUS_VAR, access_denied_errors), SHOW_LONG_STATUS},
  {"Binlog_bytes_written",     (char*) offsetof(STATUS_VAR, binlog_bytes_written), SHOW_LONGLONG_STATUS},
  {"Binlog_cache_disk_use",    (char*) &binlog_cache_disk_use,  SHOW_LONG},
  {"Binlog_cache_use",         (char*) &binlog_cache_use,       SHOW_LONG},
  {"Binlog_stmt_cache_disk_use",(char*) &binlog_stmt_cache_disk_use,  SHOW_LONG},
  {"Binlog_stmt_cache_use",    (char*) &binlog_stmt_cache_use,       SHOW_LONG},
  {"Busy_time",                (char*) offsetof(STATUS_VAR, busy_time), SHOW_DOUBLE_STATUS},
  {"Bytes_received",           (char*) offsetof(STATUS_VAR, bytes_received), SHOW_LONGLONG_STATUS},
  {"Bytes_sent",               (char*) offsetof(STATUS_VAR, bytes_sent), SHOW_LONGLONG_STATUS},
  {"Column_compressions",      (char*) offsetof(STATUS_VAR, column_compressions), SHOW_LONG_STATUS},
  {"Column_decompressions",    (char*) offsetof(STATUS_VAR, column_decompressions), SHOW_LONG_STATUS},
  {"Com",                      (char*) com_status_vars, SHOW_ARRAY},
  {"Compression",              (char*) &show_net_compression, SHOW_SIMPLE_FUNC},
  {"Connections",              (char*) &global_thread_id,         SHOW_LONG_NOFLUSH},
  {"Connection_errors_accept", (char*) &connection_errors_accept, SHOW_LONG},
  {"Connection_errors_internal", (char*) &connection_errors_internal, SHOW_LONG},
  {"Connection_errors_max_connections", (char*) &connection_errors_max_connection, SHOW_LONG},
  {"Connection_errors_peer_address", (char*) &connection_errors_peer_addr, SHOW_LONG},
  {"Connection_errors_select", (char*) &connection_errors_select, SHOW_LONG},
  {"Connection_errors_tcpwrap", (char*) &connection_errors_tcpwrap, SHOW_LONG},
  {"Cpu_time",                 (char*) offsetof(STATUS_VAR, cpu_time), SHOW_DOUBLE_STATUS},
  {"Created_tmp_disk_tables",  (char*) offsetof(STATUS_VAR, created_tmp_disk_tables_), SHOW_LONG_STATUS},
  {"Created_tmp_files",	       (char*) &my_tmp_file_created,	SHOW_LONG},
  {"Created_tmp_tables",       (char*) offsetof(STATUS_VAR, created_tmp_tables_), SHOW_LONG_STATUS},
#ifndef DBUG_OFF
  {"Debug",                    (char*) &debug_status_func,  SHOW_FUNC},
#endif
  {"Delayed_errors",           (char*) &delayed_insert_errors,  SHOW_LONG},
  {"Delayed_insert_threads",   (char*) &delayed_insert_threads, SHOW_LONG_NOFLUSH},
  {"Delayed_writes",           (char*) &delayed_insert_writes,  SHOW_LONG},
  {"Delete_scan",	       (char*) offsetof(STATUS_VAR, delete_scan_count), SHOW_LONG_STATUS},
  {"Empty_queries",            (char*) offsetof(STATUS_VAR, empty_queries), SHOW_LONG_STATUS},
  {"Executed_events",          (char*) &executed_events, SHOW_LONG_NOFLUSH },
  {"Executed_triggers",        (char*) offsetof(STATUS_VAR, executed_triggers), SHOW_LONG_STATUS},
  {"Feature_check_constraint", (char*) &feature_check_constraint, SHOW_LONG },
  {"Feature_custom_aggregate_functions", (char*) offsetof(STATUS_VAR, feature_custom_aggregate_functions), SHOW_LONG_STATUS},
  {"Feature_delay_key_write",  (char*) &feature_files_opened_with_delayed_keys, SHOW_LONG },
  {"Feature_dynamic_columns",  (char*) offsetof(STATUS_VAR, feature_dynamic_columns), SHOW_LONG_STATUS},
  {"Feature_fulltext",         (char*) offsetof(STATUS_VAR, feature_fulltext), SHOW_LONG_STATUS},
  {"Feature_gis",              (char*) offsetof(STATUS_VAR, feature_gis), SHOW_LONG_STATUS},
  {"Feature_insert_returning",   (char*)offsetof(STATUS_VAR, feature_insert_returning), SHOW_LONG_STATUS},
  {"Feature_invisible_columns",   (char*) offsetof(STATUS_VAR, feature_invisible_columns), SHOW_LONG_STATUS},
  {"Feature_json",             (char*) offsetof(STATUS_VAR, feature_json), SHOW_LONG_STATUS},
  {"Feature_locale",           (char*) offsetof(STATUS_VAR, feature_locale), SHOW_LONG_STATUS},
  {"Feature_subquery",         (char*) offsetof(STATUS_VAR, feature_subquery), SHOW_LONG_STATUS},
  {"Feature_system_versioning",   (char*) offsetof(STATUS_VAR, feature_system_versioning), SHOW_LONG_STATUS},
  {"Feature_application_time_periods", (char*) offsetof(STATUS_VAR, feature_application_time_periods), SHOW_LONG_STATUS},
  {"Feature_timezone",         (char*) offsetof(STATUS_VAR, feature_timezone), SHOW_LONG_STATUS},
  {"Feature_trigger",          (char*) offsetof(STATUS_VAR, feature_trigger), SHOW_LONG_STATUS},
  {"Feature_window_functions", (char*) offsetof(STATUS_VAR, feature_window_functions), SHOW_LONG_STATUS},
  {"Feature_xml",              (char*) offsetof(STATUS_VAR, feature_xml), SHOW_LONG_STATUS},
  {"Handler_commit",           (char*) offsetof(STATUS_VAR, ha_commit_count), SHOW_LONG_STATUS},
  {"Handler_delete",           (char*) offsetof(STATUS_VAR, ha_delete_count), SHOW_LONG_STATUS},
  {"Handler_discover",         (char*) offsetof(STATUS_VAR, ha_discover_count), SHOW_LONG_STATUS},
  {"Handler_external_lock",    (char*) offsetof(STATUS_VAR, ha_external_lock_count), SHOW_LONG_STATUS},
  {"Handler_icp_attempts",     (char*) offsetof(STATUS_VAR, ha_icp_attempts), SHOW_LONG_STATUS},
  {"Handler_icp_match",        (char*) offsetof(STATUS_VAR, ha_icp_match), SHOW_LONG_STATUS},
  {"Handler_mrr_init",         (char*) offsetof(STATUS_VAR, ha_mrr_init_count),  SHOW_LONG_STATUS},
  {"Handler_mrr_key_refills",  (char*) offsetof(STATUS_VAR, ha_mrr_key_refills_count), SHOW_LONG_STATUS},
  {"Handler_mrr_rowid_refills",(char*) offsetof(STATUS_VAR, ha_mrr_rowid_refills_count), SHOW_LONG_STATUS},
  {"Handler_prepare",          (char*) offsetof(STATUS_VAR, ha_prepare_count),  SHOW_LONG_STATUS},
  {"Handler_read_first",       (char*) offsetof(STATUS_VAR, ha_read_first_count), SHOW_LONG_STATUS},
  {"Handler_read_key",         (char*) offsetof(STATUS_VAR, ha_read_key_count), SHOW_LONG_STATUS},
  {"Handler_read_last",        (char*) offsetof(STATUS_VAR, ha_read_last_count), SHOW_LONG_STATUS},
  {"Handler_read_next",        (char*) offsetof(STATUS_VAR, ha_read_next_count), SHOW_LONG_STATUS},
  {"Handler_read_prev",        (char*) offsetof(STATUS_VAR, ha_read_prev_count), SHOW_LONG_STATUS},
  {"Handler_read_retry",       (char*) offsetof(STATUS_VAR, ha_read_retry_count), SHOW_LONG_STATUS},
  {"Handler_read_rnd",         (char*) offsetof(STATUS_VAR, ha_read_rnd_count), SHOW_LONG_STATUS},
  {"Handler_read_rnd_deleted", (char*) offsetof(STATUS_VAR, ha_read_rnd_deleted_count), SHOW_LONG_STATUS},
  {"Handler_read_rnd_next",    (char*) offsetof(STATUS_VAR, ha_read_rnd_next_count), SHOW_LONG_STATUS},
  {"Handler_rollback",         (char*) offsetof(STATUS_VAR, ha_rollback_count), SHOW_LONG_STATUS},
  {"Handler_savepoint",        (char*) offsetof(STATUS_VAR, ha_savepoint_count), SHOW_LONG_STATUS},
  {"Handler_savepoint_rollback",(char*) offsetof(STATUS_VAR, ha_savepoint_rollback_count), SHOW_LONG_STATUS},
  {"Handler_tmp_delete",       (char*) offsetof(STATUS_VAR, ha_tmp_delete_count), SHOW_LONG_STATUS},
  {"Handler_tmp_update",       (char*) offsetof(STATUS_VAR, ha_tmp_update_count), SHOW_LONG_STATUS},
  {"Handler_tmp_write",        (char*) offsetof(STATUS_VAR, ha_tmp_write_count), SHOW_LONG_STATUS},
  {"Handler_update",           (char*) offsetof(STATUS_VAR, ha_update_count), SHOW_LONG_STATUS},
  {"Handler_write",            (char*) offsetof(STATUS_VAR, ha_write_count), SHOW_LONG_STATUS},
  {"Key",                      (char*) &show_default_keycache, SHOW_FUNC},
  {"Last_query_cost",          (char*) offsetof(STATUS_VAR, last_query_cost), SHOW_DOUBLE_STATUS},
  {"Max_statement_time_exceeded", (char*) offsetof(STATUS_VAR, max_statement_time_exceeded), SHOW_LONG_STATUS},
  {"Master_gtid_wait_count",   (char*) offsetof(STATUS_VAR, master_gtid_wait_count), SHOW_LONG_STATUS},
  {"Master_gtid_wait_timeouts", (char*) offsetof(STATUS_VAR, master_gtid_wait_timeouts), SHOW_LONG_STATUS},
  {"Master_gtid_wait_time",    (char*) offsetof(STATUS_VAR, master_gtid_wait_time), SHOW_LONG_STATUS},
  {"Max_used_connections",     (char*) &max_used_connections,  SHOW_LONG},
  {"Memory_used",              (char*) &show_memory_used, SHOW_SIMPLE_FUNC},
  {"Memory_used_initial",      (char*) &start_memory_used, SHOW_LONGLONG},
  {"Not_flushed_delayed_rows", (char*) &delayed_rows_in_use,    SHOW_LONG_NOFLUSH},
  {"Open_files",               (char*) &my_file_opened,         SHOW_SINT},
  {"Open_streams",             (char*) &my_stream_opened,       SHOW_LONG_NOFLUSH},
  {"Open_table_definitions",   (char*) &show_table_definitions, SHOW_SIMPLE_FUNC},
  {"Open_tables",              (char*) &show_open_tables,       SHOW_SIMPLE_FUNC},
  {"Opened_files",             (char*) &my_file_total_opened, SHOW_LONG_NOFLUSH},
  {"Opened_plugin_libraries",  (char*) &dlopen_count, SHOW_LONG},
  {"Opened_table_definitions", (char*) offsetof(STATUS_VAR, opened_shares), SHOW_LONG_STATUS},
  {"Opened_tables",            (char*) offsetof(STATUS_VAR, opened_tables), SHOW_LONG_STATUS},
  {"Opened_views",             (char*) offsetof(STATUS_VAR, opened_views), SHOW_LONG_STATUS},
  {"Prepared_stmt_count",      (char*) &show_prepared_stmt_count, SHOW_SIMPLE_FUNC},
  {"Rows_sent",                (char*) offsetof(STATUS_VAR, rows_sent), SHOW_LONGLONG_STATUS},
  {"Rows_read",                (char*) offsetof(STATUS_VAR, rows_read), SHOW_LONGLONG_STATUS},
  {"Rows_tmp_read",            (char*) offsetof(STATUS_VAR, rows_tmp_read), SHOW_LONGLONG_STATUS},
#ifdef HAVE_REPLICATION
  {"Rpl_semi_sync_master_status", (char*) &SHOW_FNAME(status), SHOW_FUNC},
  {"Rpl_semi_sync_master_clients", (char*) &SHOW_FNAME(clients), SHOW_FUNC},
  {"Rpl_semi_sync_master_yes_tx", (char*) &rpl_semi_sync_master_yes_transactions, SHOW_LONG},
  {"Rpl_semi_sync_master_no_tx", (char*) &rpl_semi_sync_master_no_transactions, SHOW_LONG},
  {"Rpl_semi_sync_master_wait_sessions", (char*) &SHOW_FNAME(wait_sessions), SHOW_FUNC},
  {"Rpl_semi_sync_master_no_times", (char*) &rpl_semi_sync_master_off_times, SHOW_LONG},
  {"Rpl_semi_sync_master_timefunc_failures", (char*) &rpl_semi_sync_master_timefunc_fails, SHOW_LONG},
  {"Rpl_semi_sync_master_wait_pos_backtraverse", (char*) &rpl_semi_sync_master_wait_pos_backtraverse, SHOW_LONG},
  {"Rpl_semi_sync_master_tx_wait_time", (char*) &SHOW_FNAME(trx_wait_time), SHOW_FUNC},
  {"Rpl_semi_sync_master_tx_waits", (char*) &SHOW_FNAME(trx_wait_num), SHOW_FUNC},
  {"Rpl_semi_sync_master_tx_avg_wait_time", (char*) &SHOW_FNAME(avg_trx_wait_time), SHOW_FUNC},
  {"Rpl_semi_sync_master_net_wait_time", (char*) &SHOW_FNAME(net_wait_time), SHOW_FUNC},
  {"Rpl_semi_sync_master_net_waits", (char*) &SHOW_FNAME(net_wait_num), SHOW_FUNC},
  {"Rpl_semi_sync_master_net_avg_wait_time", (char*) &SHOW_FNAME(avg_net_wait_time), SHOW_FUNC},
  {"Rpl_semi_sync_master_request_ack", (char*) &rpl_semi_sync_master_request_ack, SHOW_LONGLONG},
  {"Rpl_semi_sync_master_get_ack", (char*)&rpl_semi_sync_master_get_ack, SHOW_LONGLONG},
  {"Rpl_semi_sync_slave_status", (char*) &rpl_semi_sync_slave_status, SHOW_BOOL},
  {"Rpl_semi_sync_slave_send_ack", (char*) &rpl_semi_sync_slave_send_ack, SHOW_LONGLONG},
#endif /* HAVE_REPLICATION */
#ifdef HAVE_QUERY_CACHE
  {"Qcache_free_blocks",       (char*) &query_cache.free_memory_blocks, SHOW_LONG_NOFLUSH},
  {"Qcache_free_memory",       (char*) &query_cache.free_memory, SHOW_LONG_NOFLUSH},
  {"Qcache_hits",              (char*) &query_cache.hits,       SHOW_LONG},
  {"Qcache_inserts",           (char*) &query_cache.inserts,    SHOW_LONG},
  {"Qcache_lowmem_prunes",     (char*) &query_cache.lowmem_prunes, SHOW_LONG},
  {"Qcache_not_cached",        (char*) &query_cache.refused,    SHOW_LONG},
  {"Qcache_queries_in_cache",  (char*) &query_cache.queries_in_cache, SHOW_LONG_NOFLUSH},
  {"Qcache_total_blocks",      (char*) &query_cache.total_blocks, SHOW_LONG_NOFLUSH},
#endif /*HAVE_QUERY_CACHE*/
  {"Queries",                  (char*) &show_queries,            SHOW_SIMPLE_FUNC},
  {"Questions",                (char*) offsetof(STATUS_VAR, questions), SHOW_LONG_STATUS},
#ifdef HAVE_REPLICATION
  {"Rpl_status",               (char*) &show_rpl_status,          SHOW_SIMPLE_FUNC},
#endif
  {"Select_full_join",         (char*) offsetof(STATUS_VAR, select_full_join_count_), SHOW_LONG_STATUS},
  {"Select_full_range_join",   (char*) offsetof(STATUS_VAR, select_full_range_join_count_), SHOW_LONG_STATUS},
  {"Select_range",             (char*) offsetof(STATUS_VAR, select_range_count_), SHOW_LONG_STATUS},
  {"Select_range_check",       (char*) offsetof(STATUS_VAR, select_range_check_count_), SHOW_LONG_STATUS},
  {"Select_scan",	       (char*) offsetof(STATUS_VAR, select_scan_count_), SHOW_LONG_STATUS},
  {"Slave_open_temp_tables",   (char*) &slave_open_temp_tables, SHOW_ATOMIC_COUNTER_UINT32_T},
#ifdef HAVE_REPLICATION
  {"Slaves_connected",        (char*) &binlog_dump_thread_count, SHOW_ATOMIC_COUNTER_UINT32_T},
  {"Slaves_running",          (char*) &show_slaves_running, SHOW_SIMPLE_FUNC },
  {"Slave_connections",       (char*) offsetof(STATUS_VAR, com_register_slave), SHOW_LONG_STATUS},
  {"Slave_heartbeat_period",   (char*) &show_heartbeat_period, SHOW_SIMPLE_FUNC},
  {"Slave_received_heartbeats",(char*) &show_slave_received_heartbeats, SHOW_SIMPLE_FUNC},
  {"Slave_retried_transactions",(char*)&slave_retried_transactions, SHOW_LONG},
  {"Slave_running",            (char*) &show_slave_running,     SHOW_SIMPLE_FUNC},
  {"Slave_skipped_errors",     (char*) &slave_skipped_errors, SHOW_LONGLONG},
#endif
  {"Slow_launch_threads",      (char*) &slow_launch_threads,    SHOW_LONG},
  {"Slow_queries",             (char*) offsetof(STATUS_VAR, long_query_count), SHOW_LONG_STATUS},
  {"Sort_merge_passes",	       (char*) offsetof(STATUS_VAR, filesort_merge_passes_), SHOW_LONG_STATUS},
  {"Sort_priority_queue_sorts",(char*) offsetof(STATUS_VAR, filesort_pq_sorts_), SHOW_LONG_STATUS}, 
  {"Sort_range",	       (char*) offsetof(STATUS_VAR, filesort_range_count_), SHOW_LONG_STATUS},
  {"Sort_rows",		       (char*) offsetof(STATUS_VAR, filesort_rows_), SHOW_LONG_STATUS},
  {"Sort_scan",		       (char*) offsetof(STATUS_VAR, filesort_scan_count_), SHOW_LONG_STATUS},
#ifdef HAVE_OPENSSL
#ifndef EMBEDDED_LIBRARY
  {"Ssl_accept_renegotiates",  (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_accepts",              (char*) &ssl_acceptor_stats.accept, SHOW_LONG},
  {"Ssl_callback_cache_hits",  (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_cipher",               (char*) &show_ssl_get_cipher, SHOW_SIMPLE_FUNC},
  {"Ssl_cipher_list",          (char*) &show_ssl_get_cipher_list, SHOW_SIMPLE_FUNC},
  {"Ssl_client_connects",      (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_connect_renegotiates", (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_ctx_verify_depth",     (char*) &ssl_acceptor_stats.verify_depth, SHOW_LONG},
  {"Ssl_ctx_verify_mode",      (char*) &ssl_acceptor_stats.verify_mode, SHOW_LONG},
  {"Ssl_default_timeout",      (char*) &show_ssl_get_default_timeout, SHOW_SIMPLE_FUNC},
  {"Ssl_finished_accepts",     (char*) &ssl_acceptor_stats.accept_good, SHOW_LONG},
  {"Ssl_finished_connects",    (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_server_not_after",     (char*) &show_ssl_get_server_not_after, SHOW_SIMPLE_FUNC},
  {"Ssl_server_not_before",    (char*) &show_ssl_get_server_not_before, SHOW_SIMPLE_FUNC},
  {"Ssl_session_cache_hits",   (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_session_cache_misses", (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_session_cache_mode",   (char*) &ssl_acceptor_stats.session_cache_mode, SHOW_CHAR_PTR},
  {"Ssl_session_cache_overflows", (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_session_cache_size",   (char*) &ssl_acceptor_stats.cache_size, SHOW_LONG},
  {"Ssl_session_cache_timeouts", (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_sessions_reused",      (char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_used_session_cache_entries",(char*) &ssl_acceptor_stats.zero, SHOW_LONG},
  {"Ssl_verify_depth",         (char*) &show_ssl_get_verify_depth, SHOW_SIMPLE_FUNC},
  {"Ssl_verify_mode",          (char*) &show_ssl_get_verify_mode, SHOW_SIMPLE_FUNC},
  {"Ssl_version",              (char*) &show_ssl_get_version, SHOW_SIMPLE_FUNC},
#endif
#endif /* HAVE_OPENSSL */
  {"Syncs",                    (char*) &my_sync_count,          SHOW_LONG_NOFLUSH},
  /*
    Expression cache used only for caching subqueries now, so its statistic
    variables we call subquery_cache*.
  */
  {"Subquery_cache_hit",       (char*) &subquery_cache_hit,     SHOW_LONG},
  {"Subquery_cache_miss",      (char*) &subquery_cache_miss,    SHOW_LONG},
  {"Table_locks_immediate",    (char*) &locks_immediate,        SHOW_LONG},
  {"Table_locks_waited",       (char*) &locks_waited,           SHOW_LONG},
  {"Table_open_cache_active_instances", (char*) &show_tc_active_instances, SHOW_SIMPLE_FUNC},
  {"Table_open_cache_hits",    (char*) offsetof(STATUS_VAR, table_open_cache_hits), SHOW_LONGLONG_STATUS},
  {"Table_open_cache_misses",  (char*) offsetof(STATUS_VAR, table_open_cache_misses), SHOW_LONGLONG_STATUS},
  {"Table_open_cache_overflows", (char*) offsetof(STATUS_VAR, table_open_cache_overflows), SHOW_LONGLONG_STATUS},
#ifdef HAVE_MMAP
  {"Tc_log_max_pages_used",    (char*) &tc_log_max_pages_used,  SHOW_LONG},
  {"Tc_log_page_size",         (char*) &tc_log_page_size,       SHOW_LONG_NOFLUSH},
  {"Tc_log_page_waits",        (char*) &tc_log_page_waits,      SHOW_LONG},
#endif
#ifdef HAVE_POOL_OF_THREADS
  {"Threadpool_idle_threads",  (char *) &show_threadpool_idle_threads, SHOW_SIMPLE_FUNC},
  {"Threadpool_threads",       (char *) &show_threadpool_threads, SHOW_SIMPLE_FUNC},
#endif
  {"Threads_cached",           (char*) &show_cached_thread_count, SHOW_SIMPLE_FUNC},
  {"Threads_connected",        (char*) &connection_count,       SHOW_INT},
  {"Threads_created",	       (char*) &thread_created,		SHOW_LONG_NOFLUSH},
  {"Threads_running",          (char*) offsetof(STATUS_VAR, threads_running), SHOW_UINT32_STATUS},
  {"Transactions_multi_engine", (char*) &transactions_multi_engine, SHOW_LONG},
  {"Rpl_transactions_multi_engine", (char*) &rpl_transactions_multi_engine, SHOW_LONG},
  {"Transactions_gtid_foreign_engine", (char*) &transactions_gtid_foreign_engine, SHOW_LONG},
  {"Update_scan",	       (char*) offsetof(STATUS_VAR, update_scan_count), SHOW_LONG_STATUS},
  {"Uptime",                   (char*) &show_starttime,         SHOW_SIMPLE_FUNC},
#ifdef ENABLED_PROFILING
  {"Uptime_since_flush_status",(char*) &show_flushstatustime,   SHOW_SIMPLE_FUNC},
#endif
#ifdef WITH_WSREP
  {"wsrep_connected",         (char*) &wsrep_connected,         SHOW_BOOL},
  {"wsrep_ready",             (char*) &wsrep_show_ready,        SHOW_FUNC},
  {"wsrep_cluster_state_uuid",(char*) &wsrep_cluster_state_uuid,SHOW_CHAR_PTR},
  {"wsrep_cluster_conf_id",   (char*) &wsrep_cluster_conf_id,   SHOW_LONGLONG},
  {"wsrep_cluster_status",    (char*) &wsrep_cluster_status,    SHOW_CHAR_PTR},
  {"wsrep_cluster_size",      (char*) &wsrep_cluster_size,      SHOW_LONG_NOFLUSH},
  {"wsrep_local_index",       (char*) &wsrep_local_index,       SHOW_LONG_NOFLUSH},
  {"wsrep_local_bf_aborts",   (char*) &wsrep_show_bf_aborts,    SHOW_FUNC},
  {"wsrep_provider_name",     (char*) &wsrep_provider_name,     SHOW_CHAR_PTR},
  {"wsrep_provider_version",  (char*) &wsrep_provider_version,  SHOW_CHAR_PTR},
  {"wsrep_provider_vendor",   (char*) &wsrep_provider_vendor,   SHOW_CHAR_PTR},
  {"wsrep_provider_capabilities", (char*) &wsrep_provider_capabilities, SHOW_CHAR_PTR},
  {"wsrep_thread_count",      (char*) &wsrep_running_threads,   SHOW_LONG_NOFLUSH},
  {"wsrep_applier_thread_count", (char*) &wsrep_running_applier_threads, SHOW_LONG_NOFLUSH},
  {"wsrep_rollbacker_thread_count", (char *) &wsrep_running_rollbacker_threads, SHOW_LONG_NOFLUSH},
  {"wsrep_cluster_capabilities", (char*) &wsrep_cluster_capabilities, SHOW_CHAR_PTR},
  {"wsrep",                    (char*) &wsrep_show_status,       SHOW_FUNC},
#endif
  {NullS, NullS, SHOW_LONG}
};

static bool add_terminator(DYNAMIC_ARRAY *options)
{
  my_option empty_element= {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0};
  return insert_dynamic(options, (uchar *)&empty_element);
}

static bool add_many_options(DYNAMIC_ARRAY *options, my_option *list,
                            size_t elements)
{
  for (my_option *opt= list; opt < list + elements; opt++)
    if (insert_dynamic(options, opt))
      return 1;
  return 0;
}

#ifndef EMBEDDED_LIBRARY
static void print_version(void)
{
  if (IS_SYSVAR_AUTOSIZE(&server_version_ptr))
    set_server_version(server_version, sizeof(server_version));

  printf("%s  Ver %s for %s on %s (%s)\n",my_progname,
	 server_version,SYSTEM_TYPE,MACHINE_TYPE, MYSQL_COMPILATION_COMMENT);
}

/** Compares two options' names, treats - and _ the same */
static int option_cmp(my_option *a, my_option *b)
{
  const char *sa= a->name;
  const char *sb= b->name;
  for (; *sa || *sb; sa++, sb++)
  {
    if (*sa < *sb)
    {
      if (*sa == '-' && *sb == '_')
        continue;
      else
        return -1;
    }
    if (*sa > *sb)
    {
      if (*sa == '_' && *sb == '-')
        continue;
      else
        return 1;
    }
  }
  return 0;
}

static void print_help()
{
  MEM_ROOT mem_root;
  init_alloc_root(PSI_NOT_INSTRUMENTED, &mem_root, 4096, 4096, MYF(0));

  pop_dynamic(&all_options);
  add_many_options(&all_options, pfs_early_options,
                  array_elements(pfs_early_options));
  sys_var_add_options(&all_options, sys_var::PARSE_EARLY);
  add_plugin_options(&all_options, &mem_root);
  sort_dynamic(&all_options, (qsort_cmp) option_cmp);
  sort_dynamic(&all_options, (qsort_cmp) option_cmp);
  add_terminator(&all_options);

  my_print_help((my_option*) all_options.buffer);

  /* Add variables that must be shown but not changed, like version numbers */
  pop_dynamic(&all_options);
  sys_var_add_options(&all_options, sys_var::GETOPT_ONLY_HELP);
  sort_dynamic(&all_options, (qsort_cmp) option_cmp);
  add_terminator(&all_options);
  my_print_variables((my_option*) all_options.buffer);

  free_root(&mem_root, MYF(0));
}

static void usage(void)
{
  DBUG_ENTER("usage");
  if (!(default_charset_info= get_charset_by_csname(default_character_set_name,
					           MY_CS_PRIMARY,
						   MYF(MY_WME))))
    exit(1);
  if (!default_collation_name)
    default_collation_name= (char*) default_charset_info->name;
  print_version();
  puts(ORACLE_WELCOME_COPYRIGHT_NOTICE("2000"));
  puts("Starts the MariaDB database server.\n");
  printf("Usage: %s [OPTIONS]\n", my_progname);
  if (!opt_verbose)
    puts("\nFor more help options (several pages), use mysqld --verbose --help.");
  else
  {
#ifdef __WIN__
  puts("NT and Win32 specific options:\n"
       "  --install                     Install the default service (NT).\n"
       "  --install-manual              Install the default service started manually (NT).\n"
       "  --install service_name        Install an optional service (NT).\n"
       "  --install-manual service_name Install an optional service started manually (NT).\n"
       "  --remove                      Remove the default service from the service list (NT).\n"
       "  --remove service_name         Remove the service_name from the service list (NT).\n"
       "  --enable-named-pipe           Only to be used for the default server (NT).\n"
       "  --standalone                  Dummy option to start as a standalone server (NT).");
  puts("");
#endif
  print_defaults(MYSQL_CONFIG_NAME,load_default_groups);
  puts("");
  set_ports();

  /* Print out all the options including plugin supplied options */
  print_help();

  if (! plugins_are_initialized)
  {
    puts("\nPlugins have parameters that are not reflected in this list"
         "\nbecause execution stopped before plugins were initialized.");
  }

    puts("\nTo see what variables a running MySQL server is using, type"
         "\n'mysqladmin variables' instead of 'mysqld --verbose --help'.");
  }
  DBUG_VOID_RETURN;
}
#endif /*!EMBEDDED_LIBRARY*/

/**
  Initialize MySQL global variables to default values.

  @note
    The reason to set a lot of global variables to zero is to allow one to
    restart the embedded server with a clean environment
    It's also needed on some exotic platforms where global variables are
    not set to 0 when a program starts.

    We don't need to set variables referred to in my_long_options
    as these are initialized by my_getopt.
*/

static int mysql_init_variables(void)
{
  /* Things reset to zero */
  opt_skip_slave_start= opt_reckless_slave = 0;
  mysql_home[0]= pidfile_name[0]= log_error_file[0]= 0;
#if defined(HAVE_REALPATH) && !defined(HAVE_valgrind) && !defined(HAVE_BROKEN_REALPATH)
  /*  We can only test for sub paths if my_symlink.c is using realpath */
  mysys_test_invalid_symlink= path_starts_from_data_home_dir;
#endif
  opt_log= 0;
  opt_bin_log= opt_bin_log_used= 0;
  opt_disable_networking= opt_skip_show_db=0;
  opt_skip_name_resolve= 0;
  opt_ignore_builtin_innodb= 0;
  opt_logname= opt_binlog_index_name= opt_slow_logname= 0;
  opt_log_basename= 0;
  opt_tc_log_file= (char *)"tc.log";      // no hostname in tc_log file name !
  opt_secure_auth= 0;
  opt_bootstrap= opt_myisam_log= 0;
  disable_log_notes= 0;
  mqh_used= 0;
  cleanup_done= 0;
  test_flags= select_errors= dropping_tables= ha_open_options=0;
  thread_count= 0;
  slave_open_temp_tables= 0;
  opt_endinfo= using_udf_functions= 0;
  opt_using_transactions= 0;
  abort_loop= select_thread_in_use= signal_thread_in_use= 0;
  grant_option= 0;
  aborted_threads= aborted_connects= aborted_connects_preauth= 0;
  subquery_cache_miss= subquery_cache_hit= 0;
  delayed_insert_threads= delayed_insert_writes= delayed_rows_in_use= 0;
  delayed_insert_errors= thread_created= 0;
  specialflag= 0;
  binlog_cache_use=  binlog_cache_disk_use= 0;
  max_used_connections= slow_launch_threads = 0;
  mysqld_user= mysqld_chroot= opt_init_file= opt_bin_logname = 0;
  prepared_stmt_count= 0;
  mysqld_unix_port= opt_mysql_tmpdir= my_bind_addr_str= NullS;
  bzero((uchar*) &mysql_tmpdir_list, sizeof(mysql_tmpdir_list));
  /* Clear all except global_memory_used */
  bzero((char*) &global_status_var, offsetof(STATUS_VAR,
                                             last_cleared_system_status_var));
  opt_large_pages= 0;
  opt_super_large_pages= 0;
#if defined(ENABLED_DEBUG_SYNC)
  opt_debug_sync_timeout= 0;
#endif /* defined(ENABLED_DEBUG_SYNC) */
  key_map_full.set_all();

  /* Character sets */
  system_charset_info= &my_charset_utf8mb3_general_ci;
  files_charset_info= &my_charset_utf8mb3_general_ci;
  national_charset_info= &my_charset_utf8mb3_general_ci;
  table_alias_charset= &my_charset_bin;
  character_set_filesystem= &my_charset_bin;

  opt_specialflag= SPECIAL_ENGLISH;
#ifndef EMBEDDED_LIBRARY 
  unix_sock= base_ip_sock= extra_ip_sock= MYSQL_INVALID_SOCKET;
#endif
  mysql_home_ptr= mysql_home;
  log_error_file_ptr= log_error_file;
  protocol_version= PROTOCOL_VERSION;
  what_to_log= ~(1UL << COM_TIME);
  denied_connections= 0;
  executed_events= 0;
  global_query_id= 1;
  global_thread_id= 0;
  strnmov(server_version, MYSQL_SERVER_VERSION, sizeof(server_version)-1);
  thread_cache.init();
  key_caches.empty();
  if (!(dflt_key_cache= get_or_create_key_cache(default_key_cache_base.str,
                                                default_key_cache_base.length)))
  {
    sql_print_error("Cannot allocate the keycache");
    return 1;
  }

  /* set key_cache_hash.default_value = dflt_key_cache */
  multi_keycache_init();

  /* Set directory paths */
  mysql_real_data_home_len=
    (uint)(strmake_buf(mysql_real_data_home,
                get_relative_path(MYSQL_DATADIR)) - mysql_real_data_home);
  /* Replication parameters */
  master_info_file= (char*) "master.info",
    relay_log_info_file= (char*) "relay-log.info";
  report_user= report_password = report_host= 0;	/* TO BE DELETED */
  opt_relay_logname= opt_relaylog_index_name= 0;
  slave_retried_transactions= 0;
  transactions_multi_engine= 0;
  rpl_transactions_multi_engine= 0;
  transactions_gtid_foreign_engine= 0;
  log_bin_basename= NULL;
  log_bin_index= NULL;

  /* Variables in libraries */
  charsets_dir= 0;
  default_character_set_name= (char*) MYSQL_DEFAULT_CHARSET_NAME;
  default_collation_name= compiled_default_collation_name;
  character_set_filesystem_name= (char*) "binary";
  lc_messages= (char*) "en_US";
  lc_time_names_name= (char*) "en_US";
  
  /* Variables that depends on compile options */
#ifndef DBUG_OFF
  default_dbug_option=IF_WIN("d:t:i:O,\\mariadbd.trace",
			     "d:t:i:o,/tmp/mariadbd.trace");
  current_dbug_option= default_dbug_option;
#endif
  opt_error_log= IF_WIN(1,0);
#ifdef ENABLED_PROFILING
    have_profiling = SHOW_OPTION_YES;
#else
    have_profiling = SHOW_OPTION_NO;
#endif

#if defined(HAVE_OPENSSL) && !defined(EMBEDDED_LIBRARY)
  have_ssl=SHOW_OPTION_YES;
#if defined(HAVE_WOLFSSL)
  have_openssl= SHOW_OPTION_NO;
#else
  have_openssl= SHOW_OPTION_YES;
#endif
#else
  have_openssl= have_ssl= SHOW_OPTION_NO;
#endif
#ifdef HAVE_BROKEN_REALPATH
  have_symlink=SHOW_OPTION_NO;
#else
  have_symlink=SHOW_OPTION_YES;
#endif
#ifdef HAVE_DLOPEN
  have_dlopen=SHOW_OPTION_YES;
#else
  have_dlopen=SHOW_OPTION_NO;
#endif
#ifdef HAVE_QUERY_CACHE
  have_query_cache=SHOW_OPTION_YES;
#else
  have_query_cache=SHOW_OPTION_NO;
#endif
#ifdef HAVE_SPATIAL
  have_geometry=SHOW_OPTION_YES;
#else
  have_geometry=SHOW_OPTION_NO;
#endif
#ifdef HAVE_RTREE_KEYS
  have_rtree_keys=SHOW_OPTION_YES;
#else
  have_rtree_keys=SHOW_OPTION_NO;
#endif
#ifdef HAVE_CRYPT
  have_crypt=SHOW_OPTION_YES;
#else
  have_crypt=SHOW_OPTION_NO;
#endif
#ifdef HAVE_COMPRESS
  have_compress= SHOW_OPTION_YES;
#else
  have_compress= SHOW_OPTION_NO;
#endif
#ifdef HAVE_LIBWRAP
  libwrapName= NullS;
#endif
#ifdef HAVE_OPENSSL
  des_key_file = 0;
#ifndef EMBEDDED_LIBRARY
  ssl_acceptor_fd= 0;
#endif /* ! EMBEDDED_LIBRARY */
#endif /* HAVE_OPENSSL */

#if defined(__WIN__)
  /* Allow Win32 users to move MySQL anywhere */
  {
    char prg_dev[LIBLEN];
    char executing_path_name[LIBLEN];
    if (!test_if_hard_path(my_progname))
    {
      // we don't want to use GetModuleFileName inside of my_path since
      // my_path is a generic path dereferencing function and here we care
      // only about the executing binary.
      GetModuleFileName(NULL, executing_path_name, sizeof(executing_path_name));
      my_path(prg_dev, executing_path_name, NULL);
    }
    else
      my_path(prg_dev, my_progname, "mysql/bin");
    strcat(prg_dev,"/../");			// Remove 'bin' to get base dir
    cleanup_dirname(mysql_home,prg_dev);
  }
#else
  const char *tmpenv;
  if (!(tmpenv = getenv("MY_BASEDIR_VERSION")))
    tmpenv = DEFAULT_MYSQL_HOME;
  strmake_buf(mysql_home, tmpenv);
  set_sys_var_value_origin(&mysql_home_ptr, sys_var::ENV);
#endif

  if (wsrep_init_vars())
    return 1;

  return 0;
}

my_bool
mysqld_get_one_option(const struct my_option *opt, const char *argument,
                      const char *filename)
{
  if (opt->app_type)
  {
    sys_var *var= (sys_var*) opt->app_type;
    if (argument == autoset_my_option)
    {
      var->value_origin= sys_var::AUTO;
      return 0;
    }
    if (*filename)
    {
      var->origin_filename= filename;
      var->value_origin= sys_var::CONFIG;
    }
    else
      var->value_origin= sys_var::COMMAND_LINE;
  }

  switch(opt->id) {
  case '#':
#ifndef DBUG_OFF
    if (!argument)
      argument= (char*) default_dbug_option;
    if (argument[0] == '0' && !argument[1])
    {
      DEBUGGER_OFF;
      break;
    }
    DEBUGGER_ON;
    if (argument[0] == '1' && !argument[1])
      break;
    DBUG_SET_INITIAL(argument);
    current_dbug_option= argument;
    opt_endinfo=1;				/* unireg: memory allocation */
#else
    sql_print_warning("'%s' is disabled in this build", opt->name);
#endif
    break;
  case OPT_REMOVED_OPTION:
    sql_print_warning("'%s' was removed. It does nothing now and exists only "
                      "for compatibility with old my.cnf files.", opt->name);
    break;
  case OPT_MYSQL_COMPATIBILITY:
    sql_print_warning("'%s' is MySQL 5.6 / 5.7 compatible option. Not used or "
                      "needed in MariaDB.", opt->name);
    break;
  case OPT_MYSQL_TO_BE_IMPLEMENTED:
    sql_print_warning("'%s' is MySQL 5.6 / 5.7 compatible option. To be "
                      "implemented in later versions.", opt->name);
    break;
  case 'a':
    SYSVAR_AUTOSIZE(global_system_variables.sql_mode, MODE_ANSI);
    SYSVAR_AUTOSIZE(global_system_variables.tx_isolation, ISO_SERIALIZABLE);
    break;
  case 'b':
    strmake_buf(mysql_home, argument);
    break;
  case 'C':
    if (default_collation_name == compiled_default_collation_name)
      default_collation_name= 0;
    break;
  case 'h':
    strmake_buf(mysql_real_data_home, argument);
    /* Correct pointer set by my_getopt (for embedded library) */
    mysql_real_data_home_ptr= mysql_real_data_home;
    break;
  case 'u':
    if (!mysqld_user || !strcmp(mysqld_user, argument))
      mysqld_user= argument;
    else
      sql_print_warning("Ignoring user change to '%s' because the user was set to '%s' earlier on the command line\n", argument, mysqld_user);
    break;
  case 'L':
    strmake_buf(lc_messages_dir, argument);
    break;
  case OPT_BINLOG_FORMAT:
    binlog_format_used= true;
    break;
#include <sslopt-case.h>
  case 'V':
    if (argument)
    {
      strmake(server_version, argument, sizeof(server_version) - 1);
      set_sys_var_value_origin(&server_version_ptr, sys_var::CONFIG);
      using_custom_server_version= true;
    }
#ifndef EMBEDDED_LIBRARY
    else
    {
      print_version();
      opt_abort= 1;                    // Abort after parsing all options
    }
#endif /*EMBEDDED_LIBRARY*/
    break;
  case 'W':
    if (!argument)
      global_system_variables.log_warnings++;
    else if (argument == disabled_my_option)
      global_system_variables.log_warnings= 0L;
    else
      global_system_variables.log_warnings= atoi(argument);
    break;
  case 'T':
    test_flags= argument ? (uint) atoi(argument) : 0;
    opt_endinfo=1;
    break;
  case OPT_THREAD_CONCURRENCY:
    WARN_DEPRECATED_NO_REPLACEMENT(NULL, "THREAD_CONCURRENCY");
    break;
  case (int) OPT_ISAM_LOG:
    opt_myisam_log=1;
    break;
  case (int) OPT_BIN_LOG:
    opt_bin_log= MY_TEST(argument != disabled_my_option);
    opt_bin_log_used= 1;
    break;
  case (int) OPT_LOG_BASENAME:
  {
    if (opt_log_basename[0] == 0 || strchr(opt_log_basename, FN_EXTCHAR) ||
        strchr(opt_log_basename,FN_LIBCHAR) ||
        !is_filename_allowed(opt_log_basename, strlen(opt_log_basename), FALSE))
    {
      sql_print_error("Wrong argument for --log-basename. It can't be empty or contain '.' or '" FN_DIRSEP "'. It must be valid filename.");
      return 1;
    }
    if (log_error_file_ptr != disabled_my_option)
      SYSVAR_AUTOSIZE(log_error_file_ptr, opt_log_basename);

    /* General log file */
    make_default_log_name(&opt_logname, ".log", false);
    /* Slow query log file */
    make_default_log_name(&opt_slow_logname, "-slow.log", false);
    /* Binary log file */
    make_default_log_name(&opt_bin_logname, "-bin", true);
    /* Binary log index file */
    make_default_log_name(&opt_binlog_index_name, "-bin.index", true);
    set_sys_var_value_origin(&opt_logname, sys_var::AUTO);
    set_sys_var_value_origin(&opt_slow_logname, sys_var::AUTO);
    if (!opt_logname || !opt_slow_logname || !opt_bin_logname ||
        !opt_binlog_index_name)
      return 1;

#ifdef HAVE_REPLICATION
    /* Relay log file */
    make_default_log_name(&opt_relay_logname, "-relay-bin", true);
    /* Relay log index file */
    make_default_log_name(&opt_relaylog_index_name, "-relay-bin.index", true);
    set_sys_var_value_origin(&opt_relay_logname, sys_var::AUTO);
    if (!opt_relay_logname || !opt_relaylog_index_name)
      return 1;
#endif

    if (IS_SYSVAR_AUTOSIZE(&pidfile_name_ptr))
    {
      SYSVAR_AUTOSIZE(pidfile_name_ptr, pidfile_name);
      /* PID file */
      strmake(pidfile_name, argument, sizeof(pidfile_name)-5);
      strmov(fn_ext(pidfile_name),".pid");
    }
    break;
  }
#ifdef HAVE_REPLICATION
  case (int)OPT_REPLICATE_IGNORE_DB:
  {
    cur_rpl_filter->add_ignore_db(argument);
    break;
  }
  case (int)OPT_REPLICATE_DO_DB:
  {
    cur_rpl_filter->add_do_db(argument);
    break;
  }
  case (int)OPT_REPLICATE_REWRITE_DB:
  {
    /* See also OPT_REWRITE_DB handling in client/mysqlbinlog.cc */
    const char* key= argument, *ptr, *val;

    // Skipp pre-space in key
    while (*key && my_isspace(mysqld_charset, *key))
      key++;

    // Where val begins
    if (!(ptr= strstr(key, "->")))
    {
      sql_print_error("Bad syntax in replicate-rewrite-db: missing '->'");
      return 1;
    }
    val= ptr+2;

    // Skip blanks at the end of key
    while (ptr > key && my_isspace(mysqld_charset, ptr[-1]))
      ptr--;
    if (ptr == key)
    {
      sql_print_error("Bad syntax in replicate-rewrite-db - empty FROM db");
      return 1;
    }
    key= strmake_root(&startup_root, key, (size_t) (ptr-key));

    /* Skipp pre space in value */
    while (*val && my_isspace(mysqld_charset, *val))
      val++;

    // Value ends with \0 or space
    for (ptr= val; *ptr && !my_isspace(&my_charset_latin1, *ptr) ; ptr++)
    {}
    if (ptr == val)
    {
      sql_print_error("Bad syntax in replicate-rewrite-db - empty TO db");
      return 1;
    }
    val= strmake_root(&startup_root, val, (size_t) (ptr-val));

    cur_rpl_filter->add_db_rewrite(key, val);
    break;
  }
  case (int)OPT_SLAVE_PARALLEL_MODE:
  {
    /* Store latest mode for Master::Info */
    cur_rpl_filter->set_parallel_mode
      ((enum_slave_parallel_mode)opt_slave_parallel_mode);
    break;
  }

  case (int)OPT_BINLOG_IGNORE_DB:
  {
    binlog_filter->add_ignore_db(argument);
    break;
  }
  case (int)OPT_BINLOG_DO_DB:
  {
    binlog_filter->add_do_db(argument);
    break;
  }
  case (int)OPT_REPLICATE_DO_TABLE:
  {
    if (cur_rpl_filter->add_do_table(argument))
    {
      sql_print_error("Could not add do table rule '%s'", argument);
      return 1;
    }
    break;
  }
  case (int)OPT_REPLICATE_WILD_DO_TABLE:
  {
    if (cur_rpl_filter->add_wild_do_table(argument))
    {
      sql_print_error("Could not add do table rule '%s'", argument);
      return 1;
    }
    break;
  }
  case (int)OPT_REPLICATE_WILD_IGNORE_TABLE:
  {
    if (cur_rpl_filter->add_wild_ignore_table(argument))
    {
      sql_print_error("Could not add ignore table rule '%s'", argument);
      return 1;
    }
    break;
  }
  case (int)OPT_REPLICATE_IGNORE_TABLE:
  {
    if (cur_rpl_filter->add_ignore_table(argument))
    {
      sql_print_error("Could not add ignore table rule '%s'", argument);
      return 1;
    }
    break;
  }
#endif /* HAVE_REPLICATION */
  case (int) OPT_SAFE:
    opt_specialflag|= SPECIAL_SAFE_MODE | SPECIAL_NO_NEW_FUNC;
    SYSVAR_AUTOSIZE(delay_key_write_options, (uint) DELAY_KEY_WRITE_NONE);
    SYSVAR_AUTOSIZE(myisam_recover_options, HA_RECOVER_DEFAULT);
    ha_open_options&= ~(HA_OPEN_DELAY_KEY_WRITE);
#ifdef HAVE_QUERY_CACHE
    SYSVAR_AUTOSIZE(query_cache_size, 0);
#endif
    sql_print_warning("The syntax '--safe-mode' is deprecated and will be "
                      "removed in a future release.");
    break;
  case (int) OPT_SKIP_HOST_CACHE:
    opt_specialflag|= SPECIAL_NO_HOST_CACHE;
    break;
  case (int) OPT_SKIP_RESOLVE:
    if ((opt_skip_name_resolve= (argument != disabled_my_option)))
      opt_specialflag|= SPECIAL_NO_RESOLVE;
    else
      opt_specialflag&= ~SPECIAL_NO_RESOLVE;
    break;
  case (int) OPT_WANT_CORE:
    test_flags |= TEST_CORE_ON_SIGNAL;
    break;
  case OPT_CONSOLE:
    if (opt_console)
      opt_error_log= 0;			// Force logs to stdout
    break;
  case OPT_BOOTSTRAP:
    opt_noacl=opt_bootstrap=1;
    break;
  case OPT_SERVER_ID:
    ::server_id= global_system_variables.server_id;
    break;
  case OPT_LOWER_CASE_TABLE_NAMES:
    lower_case_table_names_used= 1;
    break;
#if defined(ENABLED_DEBUG_SYNC)
  case OPT_DEBUG_SYNC_TIMEOUT:
    /*
      Debug Sync Facility. See debug_sync.cc.
      Default timeout for WAIT_FOR action.
      Default value is zero (facility disabled).
      If option is given without an argument, supply a non-zero value.
    */
    if (!argument)
    {
      /* purecov: begin tested */
      opt_debug_sync_timeout= DEBUG_SYNC_DEFAULT_WAIT_TIMEOUT;
      /* purecov: end */
    }
    break;
#endif /* defined(ENABLED_DEBUG_SYNC) */
  case OPT_LOG_ERROR:
    /*
      "No --log-error" == "write errors to stderr",
      "--log-error without argument" == "write errors to a file".
    */
    if (argument == NULL) /* no argument */
      log_error_file_ptr= const_cast<char*>("");
    break;
  case OPT_IGNORE_DB_DIRECTORY:
    opt_ignore_db_dirs= NULL; // will be set in ignore_db_dirs_process_additions
    if (*argument == 0)
      ignore_db_dirs_reset();
    else
    {
      if (push_ignored_db_dir(argument))
      {
        sql_print_error("Can't start server: "
                        "cannot process --ignore-db-dir=%.*s", 
                        FN_REFLEN, argument);
        return 1;
      }
    }
    break;
  case OPT_PLUGIN_LOAD:
    free_list(opt_plugin_load_list_ptr);
    if (argument == disabled_my_option)
      break;                                    // Resets plugin list
    /* fall through */
  case OPT_PLUGIN_LOAD_ADD:
    opt_plugin_load_list_ptr->push_back(new i_string(argument));
    break;
  case OPT_PFS_INSTRUMENT:
  {
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
#ifndef EMBEDDED_LIBRARY
    /* Parse instrument name and value from argument string */
    const char *name= argument, *ptr, *val;

    /* Trim leading spaces from instrument name */
    while (*name && my_isspace(mysqld_charset, *name))
      name++;

    /* Assignment required */
    if (!(ptr= strchr(name, '=')))
    {
       my_getopt_error_reporter(WARNING_LEVEL,
                             "Missing value for performance_schema_instrument "
                             "'%s'", argument);
      return 0;
    }

    /* Option value */
    val= ptr + 1;

    /* Trim trailing spaces and slashes from instrument name */
    while (ptr > name && (my_isspace(mysqld_charset, ptr[-1]) ||
                          ptr[-1] == '/'))
      ptr--;
    if (ptr == name)
    {
       my_getopt_error_reporter(WARNING_LEVEL,
                             "Invalid instrument name for "
                             "performance_schema_instrument '%s'", name);
       return 0;
    }
    name= strmake_root(&startup_root, name, (size_t) (ptr - name));

    /* Trim leading spaces from option value */
    while (*val && my_isspace(mysqld_charset, *val))
      val++;

    /* Find end of value */
    for (ptr= val; *ptr && !my_isspace(mysqld_charset, *ptr) ; ptr++)
    {}
    if (ptr == val)
    {
       my_getopt_error_reporter(WARNING_LEVEL,
                             "No value for performance_schema_instrument "
                             "'%s'", name);
      return 0;
    }
    val= strmake_root(&startup_root, val, (size_t) (ptr - val));

    /* Add instrument name and value to array of configuration options */
    if (add_pfs_instr_to_array(name, val))
    {
       my_getopt_error_reporter(WARNING_LEVEL,
                             "Invalid value for performance_schema_instrument "
                             "'%s'", name);
      return 0;
    }
#endif /* EMBEDDED_LIBRARY */
#endif
    break;
  }
#ifdef WITH_WSREP
  case OPT_WSREP_CAUSAL_READS:
  {
    if (global_system_variables.wsrep_causal_reads)
    {
      WSREP_WARN("option --wsrep-causal-reads is deprecated");
      if (!(global_system_variables.wsrep_sync_wait & WSREP_SYNC_WAIT_BEFORE_READ))
      {
        WSREP_WARN("--wsrep-causal-reads=ON takes precedence over --wsrep-sync-wait=%u. "
                     "WSREP_SYNC_WAIT_BEFORE_READ is on",
                     global_system_variables.wsrep_sync_wait);
        global_system_variables.wsrep_sync_wait |= WSREP_SYNC_WAIT_BEFORE_READ;
      }
    }
    else
    {
      if (global_system_variables.wsrep_sync_wait & WSREP_SYNC_WAIT_BEFORE_READ) {
          WSREP_WARN("--wsrep-sync-wait=%u takes precedence over --wsrep-causal-reads=OFF. "
                     "WSREP_SYNC_WAIT_BEFORE_READ is on",
                     global_system_variables.wsrep_sync_wait);
          global_system_variables.wsrep_causal_reads = 1;
      }
    }
    break;
  }
  case OPT_WSREP_SYNC_WAIT:
    global_system_variables.wsrep_causal_reads=
      MY_TEST(global_system_variables.wsrep_sync_wait &
              WSREP_SYNC_WAIT_BEFORE_READ);
    break;
#endif /* WITH_WSREP */
  }
  return 0;
}


/** Handle arguments for multiple key caches. */

C_MODE_START

static void*
mysql_getopt_value(const char *name, uint length,
		   const struct my_option *option, int *error)
{
  if (error)
    *error= 0;
  switch (option->id) {
  case OPT_KEY_BUFFER_SIZE:
  case OPT_KEY_CACHE_BLOCK_SIZE:
  case OPT_KEY_CACHE_DIVISION_LIMIT:
  case OPT_KEY_CACHE_AGE_THRESHOLD:
  case OPT_KEY_CACHE_PARTITIONS:
  case OPT_KEY_CACHE_CHANGED_BLOCKS_HASH_SIZE:
  {
    KEY_CACHE *key_cache;
    if (unlikely(!(key_cache= get_or_create_key_cache(name, length))))
    {
      if (error)
        *error= EXIT_OUT_OF_MEMORY;
      return 0;
    }
    switch (option->id) {
    case OPT_KEY_BUFFER_SIZE:
      return &key_cache->param_buff_size;
    case OPT_KEY_CACHE_BLOCK_SIZE:
      return &key_cache->param_block_size;
    case OPT_KEY_CACHE_DIVISION_LIMIT:
      return &key_cache->param_division_limit;
    case OPT_KEY_CACHE_AGE_THRESHOLD:
      return &key_cache->param_age_threshold;
    case OPT_KEY_CACHE_PARTITIONS:
      return (uchar**) &key_cache->param_partitions;
    case OPT_KEY_CACHE_CHANGED_BLOCKS_HASH_SIZE:
      return (uchar**) &key_cache->changed_blocks_hash_size;
    }
  }
  /* We return in all cases above. Let us silence -Wimplicit-fallthrough */
  DBUG_ASSERT(0);
#ifdef HAVE_REPLICATION
  /* fall through */
  case OPT_REPLICATE_DO_DB:
  case OPT_REPLICATE_DO_TABLE:
  case OPT_REPLICATE_IGNORE_DB:
  case OPT_REPLICATE_IGNORE_TABLE:
  case OPT_REPLICATE_WILD_DO_TABLE:
  case OPT_REPLICATE_WILD_IGNORE_TABLE:
  case OPT_REPLICATE_REWRITE_DB:
  case OPT_SLAVE_PARALLEL_MODE:
  {
    /* Store current filter for mysqld_get_one_option() */
    if (!(cur_rpl_filter= get_or_create_rpl_filter(name, length)))
    {
      if (error)
        *error= EXIT_OUT_OF_MEMORY;
    }
    if (option->id == OPT_SLAVE_PARALLEL_MODE)
    {
      /*
        Ensure parallel_mode variable is shown in --help. The other
        variables are not easily printable here.
       */
      return (char**) &opt_slave_parallel_mode;
    }
    return 0;
  }
#endif
  }
  return option->value;
}

static void option_error_reporter(enum loglevel level, const char *format, ...)
{
  va_list args;
  va_start(args, format);

  /*
    Don't print warnings for --loose options during bootstrap if
    log_warnings <= 2 (2 is default) as warnings during bootstrap
    can confuse people when running mysql_install_db and other scripts.
    Don't print loose warnings at all if log_warnings <= 1
  */
  if (level == ERROR_LEVEL ||
      (global_system_variables.log_warnings >
       (ulong) (1 + MY_TEST(opt_bootstrap))))
  {
    vprint_msg_to_log(level, format, args);
  }
  va_end(args);
}

C_MODE_END

/**
  Get server options from the command line,
  and perform related server initializations.
  @param [in, out] argc_ptr       command line options (count)
  @param [in, out] argv_ptr       command line options (values)
  @return 0 on success

  @todo
  - FIXME add EXIT_TOO_MANY_ARGUMENTS to "mysys_err.h" and return that code?
*/
static int get_options(int *argc_ptr, char ***argv_ptr)
{
  int ho_error;

  my_getopt_get_addr= mysql_getopt_value;
  my_getopt_error_reporter= option_error_reporter;

  /* prepare all_options array */
  my_init_dynamic_array(PSI_INSTRUMENT_ME, &all_options, sizeof(my_option),
                        array_elements(my_long_options) + sys_var_elements(),
                        array_elements(my_long_options)/4, MYF(0));
  add_many_options(&all_options, my_long_options, array_elements(my_long_options));
  sys_var_add_options(&all_options, 0);
  add_terminator(&all_options);

  /* Skip unknown options so that they may be processed later by plugins */
  my_getopt_skip_unknown= TRUE;

  if ((ho_error= handle_options(argc_ptr, argv_ptr,
                                (my_option*) (all_options.buffer),
                                mysqld_get_one_option)))
    return ho_error;

  if (!opt_help)
    delete_dynamic(&all_options);
  else
    opt_abort= 1;

  /* Add back the program name handle_options removes */
  (*argc_ptr)++;
  (*argv_ptr)--;

  disable_log_notes= opt_silent_startup;

  /*
    Options have been parsed. Now some of them need additional special
    handling, like custom value checking, checking of incompatibilites
    between options, setting of multiple variables, etc.
    Do them here.
  */
  if (global_system_variables.net_buffer_length > 
      global_system_variables.max_allowed_packet)
  {
    sql_print_warning("net_buffer_length (%lu) is set to be larger "
                      "than max_allowed_packet (%lu). Please rectify.",
                      global_system_variables.net_buffer_length, 
                      global_system_variables.max_allowed_packet);
  }

  if (log_error_file_ptr != disabled_my_option)
    opt_error_log= 1;
  else
    log_error_file_ptr= const_cast<char*>("");

  opt_init_connect.length=strlen(opt_init_connect.str);
  opt_init_slave.length=strlen(opt_init_slave.str);

  if (global_system_variables.low_priority_updates)
    thr_upgraded_concurrent_insert_lock= TL_WRITE_LOW_PRIORITY;

  if (ft_boolean_check_syntax_string((uchar*) ft_boolean_syntax))
  {
    sql_print_error("Invalid ft-boolean-syntax string: %s",
                    ft_boolean_syntax);
    return 1;
  }

  if (opt_disable_networking)
    mysqld_port= mysqld_extra_port= 0;

  if (opt_skip_show_db)
    opt_specialflag|= SPECIAL_SKIP_SHOW_DB;

  if (myisam_flush)
    flush_time= 0;

#ifdef HAVE_REPLICATION
  if (init_slave_skip_errors(opt_slave_skip_errors))
    return 1;
  if (init_slave_transaction_retry_errors(opt_slave_transaction_retry_errors))
    return 1;
#endif

  if (global_system_variables.max_join_size == HA_POS_ERROR)
    global_system_variables.option_bits|= OPTION_BIG_SELECTS;
  else
    global_system_variables.option_bits&= ~OPTION_BIG_SELECTS;

  if (opt_support_flashback)
  {
    /* Force binary logging */
    if (!opt_bin_logname)
      opt_bin_logname= (char*) "";                  // Use default name
    opt_bin_log= opt_bin_log_used= 1;

    /* Force format to row */
    binlog_format_used= 1;
    global_system_variables.binlog_format= BINLOG_FORMAT_ROW;
  }

  if (!opt_bootstrap && WSREP_PROVIDER_EXISTS && WSREP_ON &&
      global_system_variables.binlog_format != BINLOG_FORMAT_ROW)
  {

    WSREP_ERROR ("Only binlog_format = 'ROW' is currently supported. "
                 "Configured value: '%s'. Please adjust your configuration.",
                 binlog_format_names[global_system_variables.binlog_format]);
    return 1;
  }

  // Synchronize @@global.autocommit on --autocommit
  const ulonglong turn_bit_on= opt_autocommit ?
    OPTION_AUTOCOMMIT : OPTION_NOT_AUTOCOMMIT;
  global_system_variables.option_bits=
    (global_system_variables.option_bits &
     ~(OPTION_NOT_AUTOCOMMIT | OPTION_AUTOCOMMIT)) | turn_bit_on;

  global_system_variables.sql_mode=
    expand_sql_mode(global_system_variables.sql_mode);
#if !defined(HAVE_REALPATH) || defined(HAVE_BROKEN_REALPATH)
  my_use_symdir=0;
  my_disable_symlinks=1;
  have_symlink=SHOW_OPTION_NO;
#else
  if (!my_use_symdir)
  {
    my_disable_symlinks=1;
    have_symlink=SHOW_OPTION_DISABLED;
  }
#endif
  if (opt_debugging)
  {
    /* Allow break with SIGINT, no core or stack trace */
    test_flags|= TEST_SIGINT;
    opt_stack_trace= 1;
    test_flags&= ~TEST_CORE_ON_SIGNAL;
  }
  /* Set global MyISAM variables from delay_key_write_options */
  fix_delay_key_write(0, 0, OPT_GLOBAL);

#ifndef EMBEDDED_LIBRARY
  if (mysqld_chroot)
    set_root(mysqld_chroot);
#else
  SYSVAR_AUTOSIZE(thread_handling, SCHEDULER_NO_THREADS);
  max_allowed_packet= global_system_variables.max_allowed_packet;
  net_buffer_length= global_system_variables.net_buffer_length;
#endif
  if (fix_paths())
    return 1;

  /*
    Set some global variables from the global_system_variables
    In most cases the global variables will not be used
  */
  my_disable_locking= myisam_single_user= MY_TEST(opt_external_locking == 0);
  my_default_record_cache_size=global_system_variables.read_buff_size;

  /*
    Log mysys errors when we don't have a thd or thd->log_all_errors is set
    (recovery) to the log.  This is mainly useful for debugging strange system
    errors.
  */
  if (global_system_variables.log_warnings >= 10)
    my_global_flags= MY_WME | ME_NOTE;
  /* Log all errors not handled by thd->handle_error() to my_message_sql() */
  if (global_system_variables.log_warnings >= 11)
    my_global_flags|= ME_ERROR_LOG;
  if (my_assert_on_error)
    debug_assert_if_crashed_table= 1;

  global_system_variables.long_query_time= (ulonglong)
    (global_system_variables.long_query_time_double * 1e6 + 0.1);
  global_system_variables.max_statement_time= (ulonglong)
    (global_system_variables.max_statement_time_double * 1e6 + 0.1);

  if (opt_short_log_format)
    opt_specialflag|= SPECIAL_SHORT_LOG_FORMAT;

  if (init_global_datetime_format(MYSQL_TIMESTAMP_DATE,
                                  &global_date_format) ||
      init_global_datetime_format(MYSQL_TIMESTAMP_TIME,
                                  &global_time_format) ||
      init_global_datetime_format(MYSQL_TIMESTAMP_DATETIME,
                                  &global_datetime_format))
    return 1;

#ifdef EMBEDDED_LIBRARY
  one_thread_scheduler(thread_scheduler);
  one_thread_scheduler(extra_thread_scheduler);
#else

  if (thread_handling <= SCHEDULER_ONE_THREAD_PER_CONNECTION)
    one_thread_per_connection_scheduler(thread_scheduler, &max_connections,
                                        &connection_count);
  else if (thread_handling == SCHEDULER_NO_THREADS)
    one_thread_scheduler(thread_scheduler);
  else
    pool_of_threads_scheduler(thread_scheduler,  &max_connections,
                                        &connection_count); 

  one_thread_per_connection_scheduler(extra_thread_scheduler,
                                      &extra_max_connections,
                                      &extra_connection_count);
#endif

  opt_readonly= read_only;

  /* Remember if max_user_connections was 0 at startup */
  max_user_connections_checking= global_system_variables.max_user_connections != 0;

#ifdef HAVE_REPLICATION
  {
    sys_var *max_relay_log_size_var, *max_binlog_size_var;
    /* If max_relay_log_size is 0, then set it to max_binlog_size */
    if (!global_system_variables.max_relay_log_size)
      SYSVAR_AUTOSIZE(global_system_variables.max_relay_log_size,
                      max_binlog_size);

    /*
      Fix so that DEFAULT and limit checking works with max_relay_log_size
      (Yes, this is a hack, but it's required as the definition of
      max_relay_log_size allows it to be set to 0).
    */
    max_relay_log_size_var= intern_find_sys_var(STRING_WITH_LEN("max_relay_log_size"));
    max_binlog_size_var= intern_find_sys_var(STRING_WITH_LEN("max_binlog_size"));
    if (max_binlog_size_var && max_relay_log_size_var)
    {
      max_relay_log_size_var->option.min_value=
        max_binlog_size_var->option.min_value; 
      max_relay_log_size_var->option.def_value=
        max_binlog_size_var->option.def_value;
    }
  }
#endif

  /* Ensure that some variables are not set higher than needed */
  if (thread_cache_size > max_connections)
    SYSVAR_AUTOSIZE(thread_cache_size, max_connections);

  return 0;
}


/*
  Create version name for running mysqld version
  We automaticly add suffixes -debug, -embedded and -log to the version
  name to make the version more descriptive.
  (MYSQL_SERVER_SUFFIX is set by the compilation environment)
*/

void set_server_version(char *buf, size_t size)
{
  bool is_log= opt_log || global_system_variables.sql_log_slow || opt_bin_log;
  bool is_debug= IF_DBUG(!strstr(MYSQL_SERVER_SUFFIX_STR, "-debug"), 0);
  strxnmov(buf, size - 1,
           MYSQL_SERVER_VERSION,
           MYSQL_SERVER_SUFFIX_STR,
           IF_EMBEDDED("-embedded", ""),
           is_debug ? "-debug" : "",
           is_log ? "-log" : "",
           NullS);
}


static char *get_relative_path(const char *path)
{
  if (test_if_hard_path(path) &&
      is_prefix(path,DEFAULT_MYSQL_HOME) &&
      strcmp(DEFAULT_MYSQL_HOME,FN_ROOTDIR))
  {
    path+=(uint) strlen(DEFAULT_MYSQL_HOME);
    while (*path == FN_LIBCHAR || *path == FN_LIBCHAR2)
      path++;
  }
  return (char*) path;
}


/**
  Fix filename and replace extension where 'dir' is relative to
  mysql_real_data_home.
  @return
    1 if len(path) > FN_REFLEN
*/

bool
fn_format_relative_to_data_home(char * to, const char *name,
				const char *dir, const char *extension)
{
  char tmp_path[FN_REFLEN];
  if (!test_if_hard_path(dir))
  {
    strxnmov(tmp_path,sizeof(tmp_path)-1, mysql_real_data_home,
	     dir, NullS);
    dir=tmp_path;
  }
  return !fn_format(to, name, dir, extension,
		    MY_APPEND_EXT | MY_UNPACK_FILENAME | MY_SAFE_PATH);
}


/**
  Test a file path to determine if the path is compatible with the secure file
  path restriction.
 
  @param path null terminated character string

  @return
    @retval TRUE The path is secure
    @retval FALSE The path isn't secure
*/

bool is_secure_file_path(char *path)
{
  char buff1[FN_REFLEN], buff2[FN_REFLEN];
  size_t opt_secure_file_priv_len;
  /*
    All paths are secure if opt_secure_file_path is 0
  */
  if (!opt_secure_file_priv)
    return TRUE;

  opt_secure_file_priv_len= strlen(opt_secure_file_priv);

  if (strlen(path) >= FN_REFLEN)
    return FALSE;

  if (my_realpath(buff1, path, 0))
  {
    /*
      The supplied file path might have been a file and not a directory.
    */
    size_t length= dirname_length(path);        // Guaranteed to be < FN_REFLEN
    memcpy(buff2, path, length);
    buff2[length]= '\0';
    if (length == 0 || my_realpath(buff1, buff2, 0))
      return FALSE;
  }
  convert_dirname(buff2, buff1, NullS);
  if (!lower_case_file_system)
  {
    if (strncmp(opt_secure_file_priv, buff2, opt_secure_file_priv_len))
      return FALSE;
  }
  else
  {
    if (files_charset_info->strnncoll(buff2, strlen(buff2),
                                      opt_secure_file_priv,
                                      opt_secure_file_priv_len,
                                      TRUE))
      return FALSE;
  }
  return TRUE;
}


static int fix_paths(void)
{
  char buff[FN_REFLEN],*pos;
  DBUG_ENTER("fix_paths");

  convert_dirname(mysql_home,mysql_home,NullS);
  /* Resolve symlinks to allow 'mysql_home' to be a relative symlink */
  my_realpath(mysql_home,mysql_home,MYF(0));
  /* Ensure that mysql_home ends in FN_LIBCHAR */
  pos=strend(mysql_home);
  if (pos[-1] != FN_LIBCHAR)
  {
    pos[0]= FN_LIBCHAR;
    pos[1]= 0;
  }
  convert_dirname(lc_messages_dir, lc_messages_dir, NullS);
  convert_dirname(mysql_real_data_home,mysql_real_data_home,NullS);
  (void) my_load_path(mysql_home,mysql_home,""); // Resolve current dir
  (void) my_load_path(mysql_real_data_home,mysql_real_data_home,mysql_home);
  (void) my_load_path(pidfile_name, pidfile_name_ptr, mysql_real_data_home);

  convert_dirname(opt_plugin_dir, opt_plugin_dir_ptr ? opt_plugin_dir_ptr : 
                                  get_relative_path(PLUGINDIR), NullS);
  (void) my_load_path(opt_plugin_dir, opt_plugin_dir, mysql_home);
  opt_plugin_dir_ptr= opt_plugin_dir;
  pidfile_name_ptr= pidfile_name;

  my_realpath(mysql_unpacked_real_data_home, mysql_real_data_home, MYF(0));
  mysql_unpacked_real_data_home_len= 
  strlen(mysql_unpacked_real_data_home);
  if (mysql_unpacked_real_data_home[mysql_unpacked_real_data_home_len-1] == FN_LIBCHAR)
    --mysql_unpacked_real_data_home_len;

  char *sharedir=get_relative_path(SHAREDIR);
  if (test_if_hard_path(sharedir))
    strmake_buf(buff, sharedir);		/* purecov: tested */
  else
    strxnmov(buff,sizeof(buff)-1,mysql_home,sharedir,NullS);
  convert_dirname(buff,buff,NullS);
  (void) my_load_path(lc_messages_dir, lc_messages_dir, buff);

  /* If --character-sets-dir isn't given, use shared library dir */
  if (charsets_dir)
  {
    strmake_buf(mysql_charsets_dir, charsets_dir);
    charsets_dir= mysql_charsets_dir;
  }
  else
  {
    strxnmov(mysql_charsets_dir, sizeof(mysql_charsets_dir)-1, buff,
	     CHARSET_DIR, NullS);
    SYSVAR_AUTOSIZE(charsets_dir, mysql_charsets_dir);
  }
  (void) my_load_path(mysql_charsets_dir, mysql_charsets_dir, buff);
  convert_dirname(mysql_charsets_dir, mysql_charsets_dir, NullS);

  if (init_tmpdir(&mysql_tmpdir_list, opt_mysql_tmpdir))
    DBUG_RETURN(1);
  if (!opt_mysql_tmpdir)
    opt_mysql_tmpdir= mysql_tmpdir;
#ifdef HAVE_REPLICATION
  if (!slave_load_tmpdir)
    SYSVAR_AUTOSIZE(slave_load_tmpdir, mysql_tmpdir);
#endif /* HAVE_REPLICATION */
  /*
    Convert the secure-file-priv option to system format, allowing
    a quick strcmp to check if read or write is in an allowed dir
  */
  if (opt_secure_file_priv)
  {
    if (*opt_secure_file_priv == 0)
    {
      my_free(opt_secure_file_priv);
      opt_secure_file_priv= 0;
    }
    else
    {
      if (strlen(opt_secure_file_priv) >= FN_REFLEN)
        opt_secure_file_priv[FN_REFLEN-1]= '\0';
      if (my_realpath(buff, opt_secure_file_priv, 0))
      {
        sql_print_warning("Failed to normalize the argument for --secure-file-priv.");
        DBUG_RETURN(1);
      }
      char *secure_file_real_path= (char *)my_malloc(PSI_INSTRUMENT_ME, FN_REFLEN, MYF(MY_FAE));
      convert_dirname(secure_file_real_path, buff, NullS);
      my_free(opt_secure_file_priv);
      opt_secure_file_priv= secure_file_real_path;
    }
  }
  DBUG_RETURN(0);
}

/**
  Check if file system used for databases is case insensitive.

  @param dir_name			Directory to test

  @retval -1  Don't know (Test failed)
  @retval  0   File system is case sensitive
  @retval  1   File system is case insensitive
*/

static int test_if_case_insensitive(const char *dir_name)
{
  int result= 0;
  File file;
  char buff[FN_REFLEN], buff2[FN_REFLEN];
  MY_STAT stat_info;
  DBUG_ENTER("test_if_case_insensitive");

  fn_format(buff, opt_log_basename, dir_name, ".lower-test",
	    MY_UNPACK_FILENAME | MY_REPLACE_EXT | MY_REPLACE_DIR);
  fn_format(buff2, opt_log_basename, dir_name, ".LOWER-TEST",
	    MY_UNPACK_FILENAME | MY_REPLACE_EXT | MY_REPLACE_DIR);
  mysql_file_delete(key_file_casetest, buff2, MYF(0));
  if ((file= mysql_file_create(key_file_casetest,
                               buff, 0666, O_RDWR, MYF(0))) < 0)
  {
    if (!opt_abort)
      sql_print_warning("Can't create test file %s", buff);
    DBUG_RETURN(-1);
  }
  mysql_file_close(file, MYF(0));
  if (mysql_file_stat(key_file_casetest, buff2, &stat_info, MYF(0)))
    result= 1;					// Can access file
  mysql_file_delete(key_file_casetest, buff, MYF(MY_WME));
  DBUG_PRINT("exit", ("result: %d", result));
  DBUG_RETURN(result);
}


#ifndef EMBEDDED_LIBRARY

/**
  Create file to store pid number.
*/
static void create_pid_file()
{
  File file;
  if ((file= mysql_file_create(key_file_pid, pidfile_name, 0664,
                               O_WRONLY | O_TRUNC, MYF(MY_WME))) >= 0)
  {
    char buff[MAX_BIGINT_WIDTH + 1], *end;
    end= int10_to_str((long) getpid(), buff, 10);
    *end++= '\n';
    if (!mysql_file_write(file, (uchar*) buff, (uint) (end-buff),
                          MYF(MY_WME | MY_NABP)))
    {
      mysql_file_close(file, MYF(0));
      pid_file_created= true;
      return;
    }
    mysql_file_close(file, MYF(0));
  }
  sql_perror("Can't start server: can't create PID file");
  exit(1);
}
#endif /* EMBEDDED_LIBRARY */


/**
  Remove the process' pid file.
  
  @param  flags  file operation flags
*/

static void delete_pid_file(myf flags)
{
#ifndef EMBEDDED_LIBRARY
  if (pid_file_created)
  {
    mysql_file_delete(key_file_pid, pidfile_name, flags);
    pid_file_created= false;
  }
#endif /* EMBEDDED_LIBRARY */
  return;
}


/** Clear most status variables. */
void refresh_status(THD *thd)
{
  mysql_mutex_lock(&LOCK_status);

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  /* Reset aggregated status counters. */
  reset_pfs_status_stats();
#endif

  /* Add thread's status variabes to global status */
  add_to_status(&global_status_var, &thd->status_var);

  /* Reset thread's status variables */
  thd->set_status_var_init();
  thd->status_var.global_memory_used= 0;
  bzero((uchar*) &thd->org_status_var, sizeof(thd->org_status_var)); 
  thd->start_bytes_received= 0;

  /* Reset some global variables */
  reset_status_vars();
#ifdef WITH_WSREP
  if (WSREP_ON)
  {
    Wsrep_server_state::instance().provider().reset_status();
  }
#endif /* WITH_WSREP */

  /* Reset the counters of all key caches (default and named). */
  process_key_caches(reset_key_cache_counters, 0);
  flush_status_time= time((time_t*) 0);
  mysql_mutex_unlock(&LOCK_status);

  /*
    Set max_used_connections to the number of currently open
    connections.  This is not perfect, but status data is not exact anyway.
  */
  max_used_connections= connection_count + extra_connection_count;
}

#ifdef HAVE_PSI_INTERFACE
static PSI_file_info all_server_files[]=
{
#ifdef HAVE_MMAP
  { &key_file_map, "map", 0},
#endif /* HAVE_MMAP */
  { &key_file_binlog, "binlog", 0},
  { &key_file_binlog_cache, "binlog_cache", 0},
  { &key_file_binlog_index, "binlog_index", 0},
  { &key_file_binlog_index_cache, "binlog_index_cache", 0},
  { &key_file_relaylog, "relaylog", 0},
  { &key_file_relaylog_cache, "relaylog_cache", 0},
  { &key_file_relaylog_index, "relaylog_index", 0},
  { &key_file_relaylog_index_cache, "relaylog_index_cache", 0},
  { &key_file_io_cache, "io_cache", 0},
  { &key_file_casetest, "casetest", 0},
  { &key_file_dbopt, "dbopt", 0},
  { &key_file_des_key_file, "des_key_file", 0},
  { &key_file_ERRMSG, "ERRMSG", 0},
  { &key_select_to_file, "select_to_file", 0},
  { &key_file_fileparser, "file_parser", 0},
  { &key_file_frm, "FRM", 0},
  { &key_file_global_ddl_log, "global_ddl_log", 0},
  { &key_file_load, "load", 0},
  { &key_file_loadfile, "LOAD_FILE", 0},
  { &key_file_log_event_data, "log_event_data", 0},
  { &key_file_log_event_info, "log_event_info", 0},
  { &key_file_master_info, "master_info", 0},
  { &key_file_misc, "misc", 0},
  { &key_file_partition_ddl_log, "partition_ddl_log", 0},
  { &key_file_pid, "pid", 0},
  { &key_file_query_log, "query_log", 0},
  { &key_file_relay_log_info, "relay_log_info", 0},
  { &key_file_send_file, "send_file", 0},
  { &key_file_slow_log, "slow_log", 0},
  { &key_file_tclog, "tclog", 0},
  { &key_file_trg, "trigger_name", 0},
  { &key_file_trn, "trigger", 0},
  { &key_file_init, "init", 0},
  { &key_file_binlog_state, "binlog_state", 0}
};
#endif /* HAVE_PSI_INTERFACE */

PSI_stage_info stage_after_apply_event= { 0, "After apply log event", 0};
PSI_stage_info stage_after_create= { 0, "After create", 0};
PSI_stage_info stage_after_opening_tables= { 0, "After opening tables", 0};
PSI_stage_info stage_after_table_lock= { 0, "After table lock", 0};
PSI_stage_info stage_allocating_local_table= { 0, "Allocating local table", 0};
PSI_stage_info stage_alter_inplace_prepare= { 0, "preparing for alter table", 0};
PSI_stage_info stage_alter_inplace= { 0, "altering table", 0};
PSI_stage_info stage_alter_inplace_commit= { 0, "Committing alter table to storage engine", 0};
PSI_stage_info stage_apply_event= { 0, "Apply log event", 0};
PSI_stage_info stage_changing_master= { 0, "Changing master", 0};
PSI_stage_info stage_checking_master_version= { 0, "Checking master version", 0};
PSI_stage_info stage_checking_permissions= { 0, "checking permissions", 0};
PSI_stage_info stage_checking_privileges_on_cached_query= { 0, "checking privileges on cached query", 0};
PSI_stage_info stage_checking_query_cache_for_query= { 0, "Checking query cache for query", 0};
PSI_stage_info stage_cleaning_up= { 0, "Reset for next command", 0};
PSI_stage_info stage_closing_tables= { 0, "closing tables", 0};
PSI_stage_info stage_connecting_to_master= { 0, "Connecting to master", 0};
PSI_stage_info stage_converting_heap_to_myisam= { 0, "Converting HEAP to " TMP_ENGINE_NAME, 0};
PSI_stage_info stage_copying_to_group_table= { 0, "Copying to group table", 0};
PSI_stage_info stage_copying_to_tmp_table= { 0, "Copying to tmp table", 0};
PSI_stage_info stage_copy_to_tmp_table= { 0, "copy to tmp table", PSI_FLAG_STAGE_PROGRESS};
PSI_stage_info stage_creating_delayed_handler= { 0, "Creating delayed handler", 0};
PSI_stage_info stage_creating_sort_index= { 0, "Creating sort index", 0};
PSI_stage_info stage_creating_table= { 0, "creating table", 0};
PSI_stage_info stage_creating_tmp_table= { 0, "Creating tmp table", 0};
PSI_stage_info stage_deleting_from_main_table= { 0, "Deleting from main table", 0};
PSI_stage_info stage_deleting_from_reference_tables= { 0, "Deleting from reference tables", 0};
PSI_stage_info stage_discard_or_import_tablespace= { 0, "Discard_or_import_tablespace", 0};
PSI_stage_info stage_enabling_keys= { 0, "Enabling keys", 0};
PSI_stage_info stage_end= { 0, "End of update loop", 0};
PSI_stage_info stage_executing= { 0, "Executing", 0};
PSI_stage_info stage_execution_of_init_command= { 0, "Execution of init_command", 0};
PSI_stage_info stage_explaining= { 0, "Explaining", 0};
PSI_stage_info stage_finding_key_cache= { 0, "Finding key cache", 0};
PSI_stage_info stage_finished_reading_one_binlog_switching_to_next_binlog= { 0, "Finished reading one binlog; switching to next binlog", 0};
PSI_stage_info stage_flushing_relay_log_and_master_info_repository= { 0, "Flushing relay log and master info repository.", 0};
PSI_stage_info stage_flushing_relay_log_info_file= { 0, "Flushing relay-log info file.", 0};
PSI_stage_info stage_freeing_items= { 0, "Freeing items", 0};
PSI_stage_info stage_fulltext_initialization= { 0, "Fulltext initialization", 0};
PSI_stage_info stage_got_handler_lock= { 0, "Got handler lock", 0};
PSI_stage_info stage_got_old_table= { 0, "Got old table", 0};
PSI_stage_info stage_init= { 0, "init", 0};
PSI_stage_info stage_init_update= { 0, "init for update", 0};
PSI_stage_info stage_insert= { 0, "Insert", 0};
PSI_stage_info stage_invalidating_query_cache_entries_table= { 0, "Invalidating query cache entries (table)", 0};
PSI_stage_info stage_invalidating_query_cache_entries_table_list= { 0, "Invalidating query cache entries (table list)", 0};
PSI_stage_info stage_killing_slave= { 0, "Killing slave", 0};
PSI_stage_info stage_logging_slow_query= { 0, "Logging slow query", 0};
PSI_stage_info stage_making_temp_file_append_before_load_data= { 0, "Making temporary file (append) before replaying LOAD DATA INFILE", 0};
PSI_stage_info stage_making_temp_file_create_before_load_data= { 0, "Making temporary file (create) before replaying LOAD DATA INFILE", 0};
PSI_stage_info stage_manage_keys= { 0, "Manage keys", 0};
PSI_stage_info stage_master_has_sent_all_binlog_to_slave= { 0, "Master has sent all binlog to slave; waiting for more updates", 0};
PSI_stage_info stage_opening_tables= { 0, "Opening tables", 0};
PSI_stage_info stage_optimizing= { 0, "Optimizing", 0};
PSI_stage_info stage_preparing= { 0, "Preparing", 0};
PSI_stage_info stage_purging_old_relay_logs= { 0, "Purging old relay logs", 0};
PSI_stage_info stage_query_end= { 0, "Query end", 0};
PSI_stage_info stage_starting_cleanup= { 0, "Starting cleanup", 0};
PSI_stage_info stage_rollback= { 0, "Rollback", 0};
PSI_stage_info stage_rollback_implicit= { 0, "Rollback_implicit", 0};
PSI_stage_info stage_commit= { 0, "Commit", 0};
PSI_stage_info stage_commit_implicit= { 0, "Commit implicit", 0};
PSI_stage_info stage_queueing_master_event_to_the_relay_log= { 0, "Queueing master event to the relay log", 0};
PSI_stage_info stage_reading_event_from_the_relay_log= { 0, "Reading event from the relay log", 0};
PSI_stage_info stage_recreating_table= { 0, "Recreating table", 0};
PSI_stage_info stage_registering_slave_on_master= { 0, "Registering slave on master", 0};
PSI_stage_info stage_removing_duplicates= { 0, "Removing duplicates", 0};
PSI_stage_info stage_removing_tmp_table= { 0, "Removing tmp table", 0};
PSI_stage_info stage_rename= { 0, "Rename", 0};
PSI_stage_info stage_rename_result_table= { 0, "Rename result table", 0};
PSI_stage_info stage_requesting_binlog_dump= { 0, "Requesting binlog dump", 0};
PSI_stage_info stage_reschedule= { 0, "Reschedule", 0};
PSI_stage_info stage_searching_rows_for_update= { 0, "Searching rows for update", 0};
PSI_stage_info stage_sending_binlog_event_to_slave= { 0, "Sending binlog event to slave", 0};
PSI_stage_info stage_sending_cached_result_to_client= { 0, "Sending cached result to client", 0};
PSI_stage_info stage_sending_data= { 0, "Sending data", 0};
PSI_stage_info stage_setup= { 0, "setup", 0};
PSI_stage_info stage_show_explain= { 0, "Show explain", 0};
PSI_stage_info stage_slave_has_read_all_relay_log= { 0, "Slave has read all relay log; waiting for more updates", 0};
PSI_stage_info stage_sorting= { 0, "Sorting", 0};
PSI_stage_info stage_sorting_for_group= { 0, "Sorting for group", 0};
PSI_stage_info stage_sorting_for_order= { 0, "Sorting for order", 0};
PSI_stage_info stage_sorting_result= { 0, "Sorting result", 0};
PSI_stage_info stage_statistics= { 0, "Statistics", 0};
PSI_stage_info stage_sql_thd_waiting_until_delay= { 0, "Waiting until MASTER_DELAY seconds after master executed event", 0 };
PSI_stage_info stage_storing_result_in_query_cache= { 0, "Storing result in query cache", 0};
PSI_stage_info stage_storing_row_into_queue= { 0, "Storing row into queue", 0};
PSI_stage_info stage_system_lock= { 0, "System lock", 0};
PSI_stage_info stage_unlocking_tables= { 0, "Unlocking tables", 0};
PSI_stage_info stage_table_lock= { 0, "table lock", 0};
PSI_stage_info stage_filling_schema_table= { 0, "Filling schema table", 0};
PSI_stage_info stage_update= { 0, "Update", 0};
PSI_stage_info stage_updating= { 0, "Updating", 0};
PSI_stage_info stage_updating_main_table= { 0, "Updating main table", 0};
PSI_stage_info stage_updating_reference_tables= { 0, "Updating reference tables", 0};
PSI_stage_info stage_upgrading_lock= { 0, "Upgrading lock", 0};
PSI_stage_info stage_user_lock= { 0, "User lock", 0};
PSI_stage_info stage_user_sleep= { 0, "User sleep", 0};
PSI_stage_info stage_verifying_table= { 0, "Verifying table", 0};
PSI_stage_info stage_waiting_for_delay_list= { 0, "Waiting for delay_list", 0};
PSI_stage_info stage_waiting_for_gtid_to_be_written_to_binary_log= { 0, "Waiting for GTID to be written to binary log", 0};
PSI_stage_info stage_waiting_for_handler_insert= { 0, "Waiting for handler insert", 0};
PSI_stage_info stage_waiting_for_handler_lock= { 0, "Waiting for handler lock", 0};
PSI_stage_info stage_waiting_for_handler_open= { 0, "Waiting for handler open", 0};
PSI_stage_info stage_waiting_for_insert= { 0, "Waiting for INSERT", 0};
PSI_stage_info stage_waiting_for_master_to_send_event= { 0, "Waiting for master to send event", 0};
PSI_stage_info stage_waiting_for_master_update= { 0, "Waiting for master update", 0};
PSI_stage_info stage_waiting_for_relay_log_space= { 0, "Waiting for the slave SQL thread to free enough relay log space", 0};
PSI_stage_info stage_waiting_for_semi_sync_ack_from_slave=
{ 0, "Waiting for semi-sync ACK from slave", 0};
PSI_stage_info stage_waiting_for_semi_sync_slave={ 0, "Waiting for semi-sync slave connection", 0};
PSI_stage_info stage_reading_semi_sync_ack={ 0, "Reading semi-sync ACK from slave", 0};
PSI_stage_info stage_waiting_for_slave_mutex_on_exit= { 0, "Waiting for slave mutex on exit", 0};
PSI_stage_info stage_waiting_for_slave_thread_to_start= { 0, "Waiting for slave thread to start", 0};
PSI_stage_info stage_waiting_for_table_flush= { 0, "Waiting for table flush", 0};
PSI_stage_info stage_waiting_for_query_cache_lock= { 0, "Waiting for query cache lock", 0};
PSI_stage_info stage_waiting_for_the_next_event_in_relay_log= { 0, "Waiting for the next event in relay log", 0};
PSI_stage_info stage_waiting_for_the_slave_thread_to_advance_position= { 0, "Waiting for the slave SQL thread to advance position", 0};
PSI_stage_info stage_waiting_to_finalize_termination= { 0, "Waiting to finalize termination", 0};
PSI_stage_info stage_binlog_waiting_background_tasks= { 0, "Waiting for background binlog tasks", 0};
PSI_stage_info stage_binlog_write= { 0, "Writing to binlog", 0};
PSI_stage_info stage_binlog_processing_checkpoint_notify= { 0, "Processing binlog checkpoint notification", 0};
PSI_stage_info stage_binlog_stopping_background_thread= { 0, "Stopping binlog background thread", 0};
PSI_stage_info stage_waiting_for_work_from_sql_thread= { 0, "Waiting for work from SQL thread", 0};
PSI_stage_info stage_waiting_for_prior_transaction_to_commit= { 0, "Waiting for prior transaction to commit", 0};
PSI_stage_info stage_waiting_for_prior_transaction_to_start_commit= { 0, "Waiting for prior transaction to start commit", 0};
PSI_stage_info stage_waiting_for_room_in_worker_thread= { 0, "Waiting for room in worker thread event queue", 0};
PSI_stage_info stage_waiting_for_workers_idle= { 0, "Waiting for worker threads to be idle", 0};
PSI_stage_info stage_waiting_for_ftwrl= { 0, "Waiting due to global read lock", 0};
PSI_stage_info stage_waiting_for_ftwrl_threads_to_pause= { 0, "Waiting for worker threads to pause for global read lock", 0};
PSI_stage_info stage_waiting_for_rpl_thread_pool= { 0, "Waiting while replication worker thread pool is busy", 0};
PSI_stage_info stage_master_gtid_wait_primary= { 0, "Waiting in MASTER_GTID_WAIT() (primary waiter)", 0};
PSI_stage_info stage_master_gtid_wait= { 0, "Waiting in MASTER_GTID_WAIT()", 0};
PSI_stage_info stage_gtid_wait_other_connection= { 0, "Waiting for other master connection to process the same GTID", 0};
PSI_stage_info stage_slave_background_process_request= { 0, "Processing requests", 0};
PSI_stage_info stage_slave_background_wait_request= { 0, "Waiting for requests", 0};
PSI_stage_info stage_waiting_for_deadlock_kill= { 0, "Waiting for parallel replication deadlock handling to complete", 0};
PSI_stage_info stage_starting= { 0, "starting", 0};

PSI_memory_key key_memory_DATE_TIME_FORMAT;
PSI_memory_key key_memory_DDL_LOG_MEMORY_ENTRY;
PSI_memory_key key_memory_Event_queue_element_for_exec_names;
PSI_memory_key key_memory_Event_scheduler_scheduler_param;
PSI_memory_key key_memory_Filesort_info_merge;
PSI_memory_key key_memory_Filesort_info_record_pointers;
PSI_memory_key key_memory_Gis_read_stream_err_msg;
PSI_memory_key key_memory_JOIN_CACHE;
PSI_memory_key key_memory_MPVIO_EXT_auth_info;
PSI_memory_key key_memory_MYSQL_BIN_LOG_basename;
PSI_memory_key key_memory_MYSQL_BIN_LOG_index;
PSI_memory_key key_memory_MYSQL_LOCK;
PSI_memory_key key_memory_MYSQL_LOG_name;
PSI_memory_key key_memory_MYSQL_RELAY_LOG_basename;
PSI_memory_key key_memory_MYSQL_RELAY_LOG_index;
PSI_memory_key key_memory_NAMED_ILINK_name;
PSI_memory_key key_memory_PROFILE;
PSI_memory_key key_memory_QUICK_RANGE_SELECT_mrr_buf_desc;
PSI_memory_key key_memory_Query_cache;
PSI_memory_key key_memory_Relay_log_info_group_relay_log_name;
PSI_memory_key key_memory_Row_data_memory_memory;
PSI_memory_key key_memory_Rpl_info_file_buffer;
PSI_memory_key key_memory_SLAVE_INFO;
PSI_memory_key key_memory_ST_SCHEMA_TABLE;
PSI_memory_key key_memory_Sort_param_tmp_buffer;
PSI_memory_key key_memory_Sys_var_charptr_value;
PSI_memory_key key_memory_TABLE;
PSI_memory_key key_memory_TABLE_RULE_ENT;
PSI_memory_key key_memory_TC_LOG_MMAP_pages;
PSI_memory_key key_memory_THD_db;
PSI_memory_key key_memory_THD_handler_tables_hash;
PSI_memory_key key_memory_THD_variables;
PSI_memory_key key_memory_Table_trigger_dispatcher;
PSI_memory_key key_memory_Unique_merge_buffer;
PSI_memory_key key_memory_Unique_sort_buffer;
PSI_memory_key key_memory_User_level_lock;
PSI_memory_key key_memory_XID;
PSI_memory_key key_memory_acl_cache;
PSI_memory_key key_memory_acl_mem;
PSI_memory_key key_memory_acl_memex;
PSI_memory_key key_memory_binlog_cache_mngr;
PSI_memory_key key_memory_binlog_pos;
PSI_memory_key key_memory_binlog_recover_exec;
PSI_memory_key key_memory_binlog_statement_buffer;
PSI_memory_key key_memory_binlog_ver_1_event;
PSI_memory_key key_memory_bison_stack;
PSI_memory_key key_memory_blob_mem_storage;
PSI_memory_key key_memory_dboptions_hash;
PSI_memory_key key_memory_errmsgs;
PSI_memory_key key_memory_frm_string;
PSI_memory_key key_memory_gdl;
PSI_memory_key key_memory_global_system_variables;
PSI_memory_key key_memory_handler_errmsgs;
PSI_memory_key key_memory_handlerton;
PSI_memory_key key_memory_hash_index_key_buffer;
PSI_memory_key key_memory_host_cache_hostname;
PSI_memory_key key_memory_ignored_db;
PSI_memory_key key_memory_locked_table_list;
PSI_memory_key key_memory_locked_thread_list;
PSI_memory_key key_memory_my_str_malloc;
PSI_memory_key key_memory_native_functions;
PSI_memory_key key_memory_prepared_statement_main_mem_root;
PSI_memory_key key_memory_prepared_statement_map;
PSI_memory_key key_memory_queue_item;
PSI_memory_key key_memory_quick_range_select_root;
PSI_memory_key key_memory_rpl_filter;
PSI_memory_key key_memory_sp_cache;
PSI_memory_key key_memory_sp_head_call_root;
PSI_memory_key key_memory_sp_head_execute_root;
PSI_memory_key key_memory_sp_head_main_root;
PSI_memory_key key_memory_table_mapping_root;
PSI_memory_key key_memory_table_share;
PSI_memory_key key_memory_table_triggers_list;
PSI_memory_key key_memory_thd_main_mem_root;
PSI_memory_key key_memory_thd_transactions;
PSI_memory_key key_memory_user_conn;
PSI_memory_key key_memory_user_var_entry;
PSI_memory_key key_memory_user_var_entry_value;

PSI_memory_key key_memory_String_value;

#ifdef HAVE_PSI_INTERFACE

PSI_stage_info *all_server_stages[]=
{
  & stage_after_apply_event,
  & stage_after_create,
  & stage_after_opening_tables,
  & stage_after_table_lock,
  & stage_allocating_local_table,
  & stage_alter_inplace,
  & stage_alter_inplace_commit,
  & stage_alter_inplace_prepare,
  & stage_apply_event,
  & stage_binlog_write,
  & stage_binlog_processing_checkpoint_notify,
  & stage_binlog_stopping_background_thread,
  & stage_binlog_waiting_background_tasks,
  & stage_changing_master,
  & stage_checking_master_version,
  & stage_checking_permissions,
  & stage_checking_privileges_on_cached_query,
  & stage_checking_query_cache_for_query,
  & stage_cleaning_up,
  & stage_closing_tables,
  & stage_commit,
  & stage_commit_implicit,
  & stage_connecting_to_master,
  & stage_converting_heap_to_myisam,
  & stage_copy_to_tmp_table,
  & stage_copying_to_group_table,
  & stage_copying_to_tmp_table,
  & stage_creating_delayed_handler,
  & stage_creating_sort_index,
  & stage_creating_table,
  & stage_creating_tmp_table,
  & stage_deleting_from_main_table,
  & stage_deleting_from_reference_tables,
  & stage_discard_or_import_tablespace,
  & stage_enabling_keys,
  & stage_end,
  & stage_executing,
  & stage_execution_of_init_command,
  & stage_explaining,
  & stage_finding_key_cache,
  & stage_finished_reading_one_binlog_switching_to_next_binlog,
  & stage_flushing_relay_log_and_master_info_repository,
  & stage_flushing_relay_log_info_file,
  & stage_freeing_items,
  & stage_fulltext_initialization,
  & stage_got_handler_lock,
  & stage_got_old_table,
  & stage_init,
  & stage_init_update,
  & stage_insert,
  & stage_invalidating_query_cache_entries_table,
  & stage_invalidating_query_cache_entries_table_list,
  & stage_killing_slave,
  & stage_logging_slow_query,
  & stage_making_temp_file_append_before_load_data,
  & stage_making_temp_file_create_before_load_data,
  & stage_manage_keys,
  & stage_master_has_sent_all_binlog_to_slave,
  & stage_opening_tables,
  & stage_optimizing,
  & stage_preparing,
  & stage_purging_old_relay_logs,
  & stage_starting_cleanup,
  & stage_query_end,
  & stage_queueing_master_event_to_the_relay_log,
  & stage_reading_event_from_the_relay_log,
  & stage_recreating_table,
  & stage_registering_slave_on_master,
  & stage_removing_duplicates,
  & stage_removing_tmp_table,
  & stage_rename,
  & stage_rename_result_table,
  & stage_requesting_binlog_dump,
  & stage_reschedule,
  & stage_rollback,
  & stage_rollback_implicit,
  & stage_searching_rows_for_update,
  & stage_sending_binlog_event_to_slave,
  & stage_sending_cached_result_to_client,
  & stage_sending_data,
  & stage_setup,
  & stage_show_explain,
  & stage_slave_has_read_all_relay_log,
  & stage_sorting,
  & stage_sorting_for_group,
  & stage_sorting_for_order,
  & stage_sorting_result,
  & stage_sql_thd_waiting_until_delay,
  & stage_statistics,
  & stage_storing_result_in_query_cache,
  & stage_storing_row_into_queue,
  & stage_system_lock,
  & stage_unlocking_tables,
  & stage_table_lock,
  & stage_filling_schema_table,
  & stage_update,
  & stage_updating,
  & stage_updating_main_table,
  & stage_updating_reference_tables,
  & stage_upgrading_lock,
  & stage_user_lock,
  & stage_user_sleep,
  & stage_verifying_table,
  & stage_waiting_for_delay_list,
  & stage_waiting_for_gtid_to_be_written_to_binary_log,
  & stage_waiting_for_handler_insert,
  & stage_waiting_for_handler_lock,
  & stage_waiting_for_handler_open,
  & stage_waiting_for_insert,
  & stage_waiting_for_master_to_send_event,
  & stage_waiting_for_master_update,
  & stage_waiting_for_prior_transaction_to_commit,
  & stage_waiting_for_prior_transaction_to_start_commit,
  & stage_waiting_for_query_cache_lock,
  & stage_waiting_for_relay_log_space,
  & stage_waiting_for_room_in_worker_thread,
  & stage_waiting_for_slave_mutex_on_exit,
  & stage_waiting_for_slave_thread_to_start,
  & stage_waiting_for_table_flush,
  & stage_waiting_for_the_next_event_in_relay_log,
  & stage_waiting_for_the_slave_thread_to_advance_position,
  & stage_waiting_for_work_from_sql_thread,
  & stage_waiting_to_finalize_termination,
  & stage_master_gtid_wait_primary,
  & stage_master_gtid_wait,
  & stage_gtid_wait_other_connection,
  & stage_slave_background_process_request,
  & stage_slave_background_wait_request,
  & stage_waiting_for_semi_sync_ack_from_slave,
  & stage_waiting_for_semi_sync_slave,
  & stage_reading_semi_sync_ack,
  & stage_waiting_for_deadlock_kill,
  & stage_starting
};

PSI_socket_key key_socket_tcpip, key_socket_unix, key_socket_client_connection;

static PSI_socket_info all_server_sockets[]=
{
  { &key_socket_tcpip, "server_tcpip_socket", PSI_FLAG_GLOBAL},
  { &key_socket_unix, "server_unix_socket", PSI_FLAG_GLOBAL},
  { &key_socket_client_connection, "client_connection", 0}
};

static PSI_memory_info all_server_memory[]=
{
  { &key_memory_locked_table_list, "Locked_tables_list::m_locked_tables_root", 0},
  { &key_memory_locked_thread_list, "display_table_locks", PSI_FLAG_THREAD},
  { &key_memory_thd_transactions, "THD::transactions::mem_root", PSI_FLAG_THREAD},
//  { &key_memory_delegate, "Delegate::memroot", 0},
  { &key_memory_acl_mem, "sql_acl_mem", PSI_FLAG_GLOBAL},
  { &key_memory_acl_memex, "sql_acl_memex", PSI_FLAG_GLOBAL},
  { &key_memory_acl_cache, "acl_cache", PSI_FLAG_GLOBAL},
  { &key_memory_thd_main_mem_root, "thd::main_mem_root", PSI_FLAG_THREAD},
//  { &key_memory_help, "help", 0},
//  { &key_memory_new_frm_mem, "new_frm_mem", 0},
  { &key_memory_table_share, "TABLE_SHARE::mem_root", PSI_FLAG_GLOBAL}, /* table definition cache */
  { &key_memory_gdl, "gdl", 0},
  { &key_memory_table_triggers_list, "Table_triggers_list", 0},
//  { &key_memory_servers, "servers", 0},
  { &key_memory_prepared_statement_map, "Prepared_statement_map", PSI_FLAG_THREAD},
  { &key_memory_prepared_statement_main_mem_root, "Prepared_statement::main_mem_root", PSI_FLAG_THREAD},
//  { &key_memory_protocol_rset_root, "Protocol_local::m_rset_root", PSI_FLAG_THREAD},
//  { &key_memory_warning_info_warn_root, "Warning_info::m_warn_root", PSI_FLAG_THREAD},
  { &key_memory_sp_cache, "THD::sp_cache", 0},
  { &key_memory_sp_head_main_root, "sp_head::main_mem_root", 0},
  { &key_memory_sp_head_execute_root, "sp_head::execute_mem_root", PSI_FLAG_THREAD},
  { &key_memory_sp_head_call_root, "sp_head::call_mem_root", PSI_FLAG_THREAD},
  { &key_memory_table_mapping_root, "table_mapping::m_mem_root", 0},
  { &key_memory_quick_range_select_root, "QUICK_RANGE_SELECT::alloc", PSI_FLAG_THREAD},
//  { &key_memory_quick_index_merge_root, "QUICK_INDEX_MERGE_SELECT::alloc", PSI_FLAG_THREAD},
//  { &key_memory_quick_ror_intersect_select_root, "QUICK_ROR_INTERSECT_SELECT::alloc", PSI_FLAG_THREAD},
//  { &key_memory_quick_ror_union_select_root, "QUICK_ROR_UNION_SELECT::alloc", PSI_FLAG_THREAD},
//  { &key_memory_quick_group_min_max_select_root, "QUICK_GROUP_MIN_MAX_SELECT::alloc", PSI_FLAG_THREAD},
//  { &key_memory_test_quick_select_exec, "test_quick_select", PSI_FLAG_THREAD},
//  { &key_memory_prune_partitions_exec, "prune_partitions::exec", 0},
  { &key_memory_binlog_recover_exec, "MYSQL_BIN_LOG::recover", 0},
  { &key_memory_blob_mem_storage, "Blob_mem_storage::storage", 0},
  { &key_memory_NAMED_ILINK_name, "NAMED_ILINK::name", 0},
  { &key_memory_String_value, "String::value", 0},
  { &key_memory_Sys_var_charptr_value, "Sys_var_charptr::value", 0},
  { &key_memory_queue_item, "Queue::queue_item", 0},
  { &key_memory_THD_db, "THD::db", 0},
  { &key_memory_user_var_entry, "user_var_entry", 0},
//  { &key_memory_Slave_job_group_group_relay_log_name, "Slave_job_group::group_relay_log_name", 0},
  { &key_memory_Relay_log_info_group_relay_log_name, "Relay_log_info::group_relay_log_name", 0},
  { &key_memory_binlog_cache_mngr, "binlog_cache_mngr", 0},
  { &key_memory_Row_data_memory_memory, "Row_data_memory::memory", 0},
//  { &key_memory_Gtid_set_to_string, "Gtid_set::to_string", 0},
//  { &key_memory_Gtid_state_to_string, "Gtid_state::to_string", 0},
//  { &key_memory_Owned_gtids_to_string, "Owned_gtids::to_string", 0},
//  { &key_memory_log_event, "Log_event", 0},
//  { &key_memory_Incident_log_event_message, "Incident_log_event::message", 0},
//  { &key_memory_Rows_query_log_event_rows_query, "Rows_query_log_event::rows_query", 0},
  { &key_memory_Sort_param_tmp_buffer, "Sort_param::tmp_buffer", 0},
  { &key_memory_Filesort_info_merge, "Filesort_info::merge", 0},
  { &key_memory_Filesort_info_record_pointers, "Filesort_info::record_pointers", 0},
//  { &key_memory_Filesort_buffer_sort_keys, "Filesort_buffer::sort_keys", 0},
  { &key_memory_handler_errmsgs, "handler::errmsgs", 0},
  { &key_memory_handlerton, "handlerton", 0},
  { &key_memory_XID, "XID", 0},
  { &key_memory_host_cache_hostname, "host_cache::hostname", 0},
  { &key_memory_user_var_entry_value, "user_var_entry::value", 0},
  { &key_memory_User_level_lock, "User_level_lock", 0},
  { &key_memory_MYSQL_LOG_name, "MYSQL_LOG::name", 0},
  { &key_memory_TC_LOG_MMAP_pages, "TC_LOG_MMAP::pages", 0},
//  { &key_memory_my_bitmap_map, "my_bitmap_map", 0},
  { &key_memory_QUICK_RANGE_SELECT_mrr_buf_desc, "QUICK_RANGE_SELECT::mrr_buf_desc", 0},
  { &key_memory_Event_queue_element_for_exec_names, "Event_queue_element_for_exec::names", 0},
  { &key_memory_my_str_malloc, "my_str_malloc", 0},
  { &key_memory_MYSQL_BIN_LOG_basename, "MYSQL_BIN_LOG::basename", 0},
  { &key_memory_MYSQL_BIN_LOG_index, "MYSQL_BIN_LOG::index", 0},
  { &key_memory_MYSQL_RELAY_LOG_basename, "MYSQL_RELAY_LOG::basename", 0},
  { &key_memory_MYSQL_RELAY_LOG_index, "MYSQL_RELAY_LOG::index", 0},
  { &key_memory_rpl_filter, "rpl_filter memory", 0},
  { &key_memory_errmsgs, "errmsgs", 0},
  { &key_memory_Gis_read_stream_err_msg, "Gis_read_stream::err_msg", 0},
//  { &key_memory_Geometry_objects_data, "Geometry::ptr_and_wkb_data", 0},
  { &key_memory_MYSQL_LOCK, "MYSQL_LOCK", 0},
//  { &key_memory_NET_buff, "NET::buff", 0},
//  { &key_memory_NET_compress_packet, "NET::compress_packet", 0},
  { &key_memory_Event_scheduler_scheduler_param, "Event_scheduler::scheduler_param", 0},
//  { &key_memory_Gtid_set_Interval_chunk, "Gtid_set::Interval_chunk", 0},
//  { &key_memory_Owned_gtids_sidno_to_hash, "Owned_gtids::sidno_to_hash", 0},
//  { &key_memory_Sid_map_Node, "Sid_map::Node", 0},
//  { &key_memory_Gtid_state_group_commit_sidno, "Gtid_state::group_commit_sidno_locks", 0},
//  { &key_memory_Mutex_cond_array_Mutex_cond, "Mutex_cond_array::Mutex_cond", 0},
  { &key_memory_TABLE_RULE_ENT, "TABLE_RULE_ENT", 0},
//  { &key_memory_Rpl_info_table, "Rpl_info_table", 0},
  { &key_memory_Rpl_info_file_buffer, "Rpl_info_file::buffer", 0},
//  { &key_memory_db_worker_hash_entry, "db_worker_hash_entry", 0},
//  { &key_memory_rpl_slave_check_temp_dir, "rpl_slave::check_temp_dir", 0},
//  { &key_memory_rpl_slave_command_buffer, "rpl_slave::command_buffer", 0},
  { &key_memory_binlog_ver_1_event, "binlog_ver_1_event", 0},
  { &key_memory_SLAVE_INFO, "SLAVE_INFO", 0},
  { &key_memory_binlog_pos, "binlog_pos", 0},
//  { &key_memory_HASH_ROW_ENTRY, "HASH_ROW_ENTRY", 0},
  { &key_memory_binlog_statement_buffer, "binlog_statement_buffer", 0},
//  { &key_memory_partition_syntax_buffer, "partition_syntax_buffer", 0},
//  { &key_memory_READ_INFO, "READ_INFO", 0},
  { &key_memory_JOIN_CACHE, "JOIN_CACHE", 0},
//  { &key_memory_TABLE_sort_io_cache, "TABLE::sort_io_cache", 0},
//  { &key_memory_frm, "frm", 0},
  { &key_memory_Unique_sort_buffer, "Unique::sort_buffer", 0},
  { &key_memory_Unique_merge_buffer, "Unique::merge_buffer", 0},
  { &key_memory_TABLE, "TABLE", PSI_FLAG_GLOBAL}, /* Table cache */
//  { &key_memory_frm_extra_segment_buff, "frm::extra_segment_buff", 0},
//  { &key_memory_frm_form_pos, "frm::form_pos", 0},
  { &key_memory_frm_string, "frm::string", 0},
//  { &key_memory_LOG_name, "LOG_name", 0},
  { &key_memory_DATE_TIME_FORMAT, "DATE_TIME_FORMAT", 0},
  { &key_memory_DDL_LOG_MEMORY_ENTRY, "DDL_LOG_MEMORY_ENTRY", 0},
  { &key_memory_ST_SCHEMA_TABLE, "ST_SCHEMA_TABLE", 0},
  { &key_memory_ignored_db, "ignored_db", 0},
  { &key_memory_PROFILE, "PROFILE", 0},
  { &key_memory_global_system_variables, "global_system_variables", 0},
  { &key_memory_THD_variables, "THD::variables", 0},
//  { &key_memory_Security_context, "Security_context", 0},
//  { &key_memory_shared_memory_name, "Shared_memory_name", 0},
  { &key_memory_bison_stack, "bison_stack", 0},
  { &key_memory_THD_handler_tables_hash, "THD::handler_tables_hash", 0},
  { &key_memory_hash_index_key_buffer, "hash_index_key_buffer", 0},
  { &key_memory_dboptions_hash, "dboptions_hash", 0},
  { &key_memory_user_conn, "user_conn", 0},
//  { &key_memory_LOG_POS_COORD, "LOG_POS_COORD", 0},
//  { &key_memory_XID_STATE, "XID_STATE", 0},
  { &key_memory_MPVIO_EXT_auth_info, "MPVIO_EXT::auth_info", 0},
//  { &key_memory_opt_bin_logname, "opt_bin_logname", 0},
  { &key_memory_Query_cache, "Query_cache", PSI_FLAG_GLOBAL},
//  { &key_memory_READ_RECORD_cache, "READ_RECORD_cache", 0},
//  { &key_memory_Quick_ranges, "Quick_ranges", 0},
//  { &key_memory_File_query_log_name, "File_query_log::name", 0},
  { &key_memory_Table_trigger_dispatcher, "Table_trigger_dispatcher::m_mem_root", 0},
//  { &key_memory_thd_timer, "thd_timer", 0},
//  { &key_memory_THD_Session_tracker, "THD::Session_tracker", 0},
//  { &key_memory_THD_Session_sysvar_resource_manager, "THD::Session_sysvar_resource_manager", 0},
//  { &key_memory_show_slave_status_io_gtid_set, "show_slave_status_io_gtid_set", 0},
//  { &key_memory_write_set_extraction, "write_set_extraction", 0},
//  { &key_memory_get_all_tables, "get_all_tables", 0},
//  { &key_memory_fill_schema_schemata, "fill_schema_schemata", 0},
  { &key_memory_native_functions, "native_functions", PSI_FLAG_GLOBAL},
};

/**
  Initialise all the performance schema instrumentation points
  used by the server.
*/
void init_server_psi_keys(void)
{
  const char* category= "sql";
  int count;

  count= array_elements(all_server_mutexes);
  mysql_mutex_register(category, all_server_mutexes, count);

  count= array_elements(all_server_rwlocks);
  mysql_rwlock_register(category, all_server_rwlocks, count);

  count= array_elements(all_server_conds);
  mysql_cond_register(category, all_server_conds, count);

  count= array_elements(all_server_threads);
  mysql_thread_register(category, all_server_threads, count);

  count= array_elements(all_server_files);
  mysql_file_register(category, all_server_files, count);

  count= array_elements(all_server_stages);
  mysql_stage_register(category, all_server_stages, count);

  count= array_elements(all_server_sockets);
  mysql_socket_register(category, all_server_sockets, count);

  count= array_elements(all_server_memory);
  mysql_memory_register(category, all_server_memory, count);

#ifdef HAVE_PSI_STATEMENT_INTERFACE
  init_sql_statement_info();
  count= array_elements(sql_statement_info);
  mysql_statement_register(category, sql_statement_info, count);

  init_sp_psi_keys();

  category= "com";
  init_com_statement_info();

  /*
    Register [0 .. COM_QUERY - 1] as "statement/com/..."
  */
  count= (int) COM_QUERY;
  mysql_statement_register(category, com_statement_info, count);

  /*
    Register [COM_QUERY + 1 .. COM_END] as "statement/com/..."
  */
  count= (int) COM_END - (int) COM_QUERY;
  mysql_statement_register(category, & com_statement_info[(int) COM_QUERY + 1], count);

  category= "abstract";
  /*
    Register [COM_QUERY] as "statement/abstract/com_query"
  */
  mysql_statement_register(category, & com_statement_info[(int) COM_QUERY], 1);

  /*
    When a new packet is received,
    it is instrumented as "statement/abstract/new_packet".
    Based on the packet type found, it later mutates to the
    proper narrow type, for example
    "statement/abstract/query" or "statement/com/ping".
    In cases of "statement/abstract/query", SQL queries are given to
    the parser, which mutates the statement type to an even more
    narrow classification, for example "statement/sql/select".
  */
  stmt_info_new_packet.m_key= 0;
  stmt_info_new_packet.m_name= "new_packet";
  stmt_info_new_packet.m_flags= PSI_FLAG_MUTABLE;
  mysql_statement_register(category, &stmt_info_new_packet, 1);

  /*
    Statements processed from the relay log are initially instrumented as
    "statement/abstract/relay_log". The parser will mutate the statement type to
    a more specific classification, for example "statement/sql/insert".
  */
  stmt_info_rpl.m_key= 0;
  stmt_info_rpl.m_name= "relay_log";
  stmt_info_rpl.m_flags= PSI_FLAG_MUTABLE;
  mysql_statement_register(category, &stmt_info_rpl, 1);
#endif
}

#endif /* HAVE_PSI_INTERFACE */


/*
  Connection ID allocation.

  We need to maintain thread_ids in the 32bit range,
  because this is how it is passed to the client in the protocol.

  The idea is to maintain a id range, initially set to
 (0,UINT32_MAX). Whenever new id is needed, we increment the
  lower limit and return its new value.

  On "overflow", if id can not be generated anymore(i.e lower == upper -1),
  we recalculate the range boundaries.
  To do that, we first collect thread ids that are in use, by traversing
  THD list, and find largest region within (0,UINT32_MAX), that is still free.

*/

static my_thread_id thread_id_max= UINT_MAX32;

#include <vector>
#include <algorithm>

/*
  Find largest unused thread_id range.

  i.e for every number N within the returned range,
  there is no existing connection with thread_id equal to N.

  The range is exclusive, lower bound is always >=0 and
  upper bound <=MAX_UINT32.

  @param[out] low  - lower bound for the range
  @param[out] high - upper bound for the range
*/

static my_bool recalculate_callback(THD *thd, std::vector<my_thread_id> *ids)
{
  ids->push_back(thd->thread_id);
  return 0;
}


static void recalculate_thread_id_range(my_thread_id *low, my_thread_id *high)
{
  std::vector<my_thread_id> ids;

  // Add sentinels
  ids.push_back(0);
  ids.push_back(UINT_MAX32);
  server_threads.iterate(recalculate_callback, &ids);

  std::sort(ids.begin(), ids.end());
  my_thread_id max_gap= 0;
  for (size_t i= 0; i < ids.size() - 1; i++)
  {
    my_thread_id gap= ids[i+1] - ids[i];
    if (gap > max_gap)
    {
      *low= ids[i];
      *high= ids[i+1];
      max_gap= gap;
    }
  }

  if (max_gap < 2)
  {
    /* Can't find free id. This is not really possible,
      we'd need 2^32 connections for this to happen.*/
    sql_print_error("Cannot find free connection id.");
    abort();
  }
}


my_thread_id next_thread_id(void)
{
  my_thread_id retval;
  DBUG_EXECUTE_IF("thread_id_overflow", global_thread_id= thread_id_max-2;);

  mysql_mutex_lock(&LOCK_thread_id);

  if (unlikely(global_thread_id == thread_id_max - 1))
  {
    recalculate_thread_id_range(&global_thread_id, &thread_id_max);
  }

  retval= ++global_thread_id;

  mysql_mutex_unlock(&LOCK_thread_id);
  return retval;
}