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
|
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02111-1301, USA */
/* This file includes constants used with all databases */
/* Author: Michael Widenius */
#ifndef _my_base_h
#define _my_base_h
#ifndef stdin /* Included first in handler */
#define USES_TYPES /* my_dir with sys/types is included */
#define CHSIZE_USED
#include <global.h>
#include <my_dir.h> /* This includes types */
#include <my_sys.h>
#include <m_string.h>
#include <errno.h>
#ifdef MSDOS
#include <share.h> /* Neaded for sopen() */
#endif
#if !defined(USE_MY_FUNC) && !defined(THREAD)
#include <my_nosys.h> /* For faster code, after test */
#endif /* USE_MY_FUNC */
#endif /* stdin */
#include <my_list.h>
/* The following is bits in the flag parameter to ha_open() */
#define HA_OPEN_ABORT_IF_LOCKED 0 /* default */
#define HA_OPEN_WAIT_IF_LOCKED 1
#define HA_OPEN_IGNORE_IF_LOCKED 2
#define HA_OPEN_TMP_TABLE 4 /* Table is a temp table */
#define HA_OPEN_DELAY_KEY_WRITE 8 /* Don't update index */
#define HA_OPEN_ABORT_IF_CRASHED 16
#define HA_OPEN_FOR_REPAIR 32 /* open even if crashed */
/* The following is parameter to ha_rkey() how to use key */
enum ha_rkey_function {
HA_READ_KEY_EXACT, /* Find first record else error */
HA_READ_KEY_OR_NEXT, /* Record or next record */
HA_READ_KEY_OR_PREV, /* Record or previous */
HA_READ_AFTER_KEY, /* Find next rec. after key-record */
HA_READ_BEFORE_KEY, /* Find next rec. before key-record */
HA_READ_PREFIX, /* Key which as same prefix */
HA_READ_PREFIX_LAST /* Last key with the same prefix */
};
/* The following is parameter to ha_extra() */
enum ha_extra_function {
HA_EXTRA_NORMAL=0, /* Optimize for space (def) */
HA_EXTRA_QUICK=1, /* Optimize for speed */
HA_EXTRA_RESET=2, /* Reset database to after open */
HA_EXTRA_CACHE=3, /* Cash record in HA_rrnd() */
HA_EXTRA_NO_CACHE=4, /* End cacheing of records (def) */
HA_EXTRA_NO_READCHECK=5, /* No readcheck on update */
HA_EXTRA_READCHECK=6, /* Use readcheck (def) */
HA_EXTRA_KEYREAD=7, /* Read only key to database */
HA_EXTRA_NO_KEYREAD=8, /* Normal read of records (def) */
HA_EXTRA_NO_USER_CHANGE=9, /* No user is allowed to write */
HA_EXTRA_KEY_CACHE=10,
HA_EXTRA_NO_KEY_CACHE=11,
HA_EXTRA_WAIT_LOCK=12, /* Wait until file is avalably (def) */
HA_EXTRA_NO_WAIT_LOCK=13, /* If file is locked, return quickly */
HA_EXTRA_WRITE_CACHE=14, /* Use write cache in ha_write() */
HA_EXTRA_FLUSH_CACHE=15, /* flush write_record_cache */
HA_EXTRA_NO_KEYS=16, /* Remove all update of keys */
HA_EXTRA_KEYREAD_CHANGE_POS=17, /* Keyread, but change pos */
/* xxxxchk -r must be used */
HA_EXTRA_REMEMBER_POS=18, /* Remember pos for next/prev */
HA_EXTRA_RESTORE_POS=19,
HA_EXTRA_REINIT_CACHE=20, /* init cache from current record */
HA_EXTRA_FORCE_REOPEN=21, /* Datafile have changed on disk */
HA_EXTRA_FLUSH, /* Flush tables to disk */
HA_EXTRA_NO_ROWS, /* Don't write rows */
HA_EXTRA_RESET_STATE, /* Reset positions */
HA_EXTRA_IGNORE_DUP_KEY, /* Dup keys don't rollback everything*/
HA_EXTRA_NO_IGNORE_DUP_KEY,
HA_EXTRA_DONT_USE_CURSOR_TO_UPDATE /* Cursor will not be used for update */
};
/* The following is parameter to ha_panic() */
enum ha_panic_function {
HA_PANIC_CLOSE, /* Close all databases */
HA_PANIC_WRITE, /* Unlock and write status */
HA_PANIC_READ /* Lock and read keyinfo */
};
/* The following is parameter to ha_create(); keytypes */
enum ha_base_keytype {
HA_KEYTYPE_END=0,
HA_KEYTYPE_TEXT=1, /* Key is sorted as letters */
HA_KEYTYPE_BINARY=2, /* Key is sorted as unsigned chars */
HA_KEYTYPE_SHORT_INT=3,
HA_KEYTYPE_LONG_INT=4,
HA_KEYTYPE_FLOAT=5,
HA_KEYTYPE_DOUBLE=6,
HA_KEYTYPE_NUM=7, /* Not packed num with pre-space */
HA_KEYTYPE_USHORT_INT=8,
HA_KEYTYPE_ULONG_INT=9,
HA_KEYTYPE_LONGLONG=10,
HA_KEYTYPE_ULONGLONG=11,
HA_KEYTYPE_INT24=12,
HA_KEYTYPE_UINT24=13,
HA_KEYTYPE_INT8=14,
HA_KEYTYPE_VARTEXT=15, /* Key is sorted as letters */
HA_KEYTYPE_VARBINARY=16 /* Key is sorted as unsigned chars */
};
#define HA_MAX_KEYTYPE 31 /* Must be log2-1 */
/* These flags kan be OR:ed to key-flag */
#define HA_NOSAME 1 /* Set if not dupplicated records */
#define HA_PACK_KEY 2 /* Pack string key to previous key */
#define HA_AUTO_KEY 16
#define HA_BINARY_PACK_KEY 32 /* Packing of all keys to prev key */
#define HA_FULLTEXT 128 /* SerG: for full-text search */
#define HA_UNIQUE_CHECK 256 /* Check the key for uniqueness */
/* Automatic bits in key-flag */
#define HA_SPACE_PACK_USED 4 /* Test for if SPACE_PACK used */
#define HA_VAR_LENGTH_KEY 8
#define HA_NULL_PART_KEY 64
#ifndef ISAM_LIBRARY
#define HA_SORT_ALLOWS_SAME 512 /* Intern bit when sorting records */
#else
/* poor old NISAM has 8-bit flags :-( */
#define HA_SORT_ALLOWS_SAME 128 /* Intern bit when sorting records */
#endif
/* These flags can be order to key-seg-flag */
#define HA_SPACE_PACK 1 /* Pack space in key-seg */
#define HA_PART_KEY 4 /* Used by MySQL for part-key-cols */
#define HA_VAR_LENGTH 8
#define HA_NULL_PART 16
#define HA_BLOB_PART 32
#define HA_SWAP_KEY 64
#define HA_REVERSE_SORT 128 /* Sort key in reverse order */
/* optionbits for database */
#define HA_OPTION_PACK_RECORD 1
#define HA_OPTION_PACK_KEYS 2
#define HA_OPTION_COMPRESS_RECORD 4
#define HA_OPTION_LONG_BLOB_PTR 8 /* new ISAM format */
#define HA_OPTION_TMP_TABLE 16
#define HA_OPTION_CHECKSUM 32
#define HA_OPTION_DELAY_KEY_WRITE 64
#define HA_OPTION_NO_PACK_KEYS 128 /* Reserved for MySQL */
#define HA_OPTION_TEMP_COMPRESS_RECORD ((uint) 16384) /* set by isamchk */
#define HA_OPTION_READ_ONLY_DATA ((uint) 32768) /* Set by isamchk */
/* Bits in flag to create() */
#define HA_DONT_TOUCH_DATA 1 /* Don't empty datafile (isamchk) */
#define HA_PACK_RECORD 2 /* Request packed record format */
#define HA_CREATE_TMP_TABLE 4
#define HA_CREATE_CHECKSUM 8
#define HA_CREATE_DELAY_KEY_WRITE 64
/* Bits in flag to _status */
#define HA_STATUS_POS 1 /* Return position */
#define HA_STATUS_NO_LOCK 2 /* Don't use external lock */
#define HA_STATUS_TIME 4 /* Return update time */
#define HA_STATUS_CONST 8 /* Return constants values */
#define HA_STATUS_VARIABLE 16
#define HA_STATUS_ERRKEY 32
#define HA_STATUS_AUTO 64
/* Errorcodes given by functions */
#define HA_ERR_KEY_NOT_FOUND 120 /* Didn't find key on read or update */
#define HA_ERR_FOUND_DUPP_KEY 121 /* Dupplicate key on write */
#define HA_ERR_RECORD_CHANGED 123 /* Uppdate with is recoverable */
#define HA_ERR_WRONG_INDEX 124 /* Wrong index given to function */
#define HA_ERR_CRASHED 126 /* Indexfile is crashed */
#define HA_ERR_WRONG_IN_RECORD 127 /* Record-file is crashed */
#define HA_ERR_OUT_OF_MEM 128 /* Record-file is crashed */
#define HA_ERR_WRONG_COMMAND 131 /* Command not supported */
#define HA_ERR_OLD_FILE 132 /* old databasfile */
#define HA_ERR_NO_ACTIVE_RECORD 133 /* No record read in update() */
#define HA_ERR_RECORD_DELETED 134 /* Intern error-code */
#define HA_ERR_RECORD_FILE_FULL 135 /* No more room in file */
#define HA_ERR_INDEX_FILE_FULL 136 /* No more room in file */
#define HA_ERR_END_OF_FILE 137 /* end in next/prev/first/last */
#define HA_ERR_UNSUPPORTED 138 /* unsupported extension used */
#define HA_ERR_TO_BIG_ROW 139 /* Too big row */
#define HA_WRONG_CREATE_OPTION 140 /* Wrong create option */
#define HA_ERR_FOUND_DUPP_UNIQUE 141 /* Dupplicate unique on write */
#define HA_ERR_UNKNOWN_CHARSET 142 /* Can't open charset */
#define HA_ERR_WRONG_TABLE_DEF 143
#define HA_ERR_CRASHED_ON_REPAIR 144 /* Last (automatic?) repair failed */
#define HA_ERR_CRASHED_ON_USAGE 145 /* Table must be repaired */
#define HA_ERR_LOCK_WAIT_TIMEOUT 146
#define HA_ERR_LOCK_TABLE_FULL 147
#define HA_ERR_READ_ONLY_TRANSACTION 148 /* Updates not allowed */
#define HA_ERR_LOCK_DEADLOCK 149
#define HA_ERR_CANNOT_ADD_FOREIGN 150 /* Cannot add a foreign key constr. */
#define HA_ERR_NO_REFERENCED_ROW 151 /* Cannot add a child row */
#define HA_ERR_ROW_IS_REFERENCED 152 /* Cannot delete a parent row */
/* Other constants */
#define HA_NAMELEN 64 /* Max length of saved filename */
/* Intern constants in databases */
/* bits in _search */
#define SEARCH_FIND 1
#define SEARCH_NO_FIND 2
#define SEARCH_SAME 4
#define SEARCH_BIGGER 8
#define SEARCH_SMALLER 16
#define SEARCH_SAVE_BUFF 32
#define SEARCH_UPDATE 64
#define SEARCH_PREFIX 128
#define SEARCH_LAST 256
/* bits in opt_flag */
#define QUICK_USED 1
#define READ_CACHE_USED 2
#define READ_CHECK_USED 4
#define KEY_READ_USED 8
#define WRITE_CACHE_USED 16
#define OPT_NO_ROWS 32
/* bits in update */
#define HA_STATE_CHANGED 1 /* Database has changed */
#define HA_STATE_AKTIV 2 /* Has a current record */
#define HA_STATE_WRITTEN 4 /* Record is written */
#define HA_STATE_DELETED 8
#define HA_STATE_NEXT_FOUND 16 /* Next found record (record before) */
#define HA_STATE_PREV_FOUND 32 /* Prev found record (record after) */
#define HA_STATE_NO_KEY 64 /* Last read didn't find record */
#define HA_STATE_KEY_CHANGED 128
#define HA_STATE_WRITE_AT_END 256 /* set in _ps_find_writepos */
#define HA_STATE_BUFF_SAVED 512 /* If current keybuff is info->buff */
#define HA_STATE_ROW_CHANGED 1024 /* To invalide ROW cache */
#define HA_STATE_EXTEND_BLOCK 2048
enum en_fieldtype {
FIELD_LAST=-1,FIELD_NORMAL,FIELD_SKIPP_ENDSPACE,FIELD_SKIPP_PRESPACE,
FIELD_SKIPP_ZERO,FIELD_BLOB,FIELD_CONSTANT,FIELD_INTERVALL,FIELD_ZERO,
FIELD_VARCHAR,FIELD_CHECK
};
enum data_file_type {
STATIC_RECORD,DYNAMIC_RECORD,COMPRESSED_RECORD
};
/* For number of records */
#ifdef BIG_TABLES
typedef my_off_t ha_rows;
#else
typedef ulong ha_rows;
#endif
#define HA_POS_ERROR (~ (ha_rows) 0)
#define HA_OFFSET_ERROR (~ (my_off_t) 0)
#if SYSTEM_SIZEOF_OFF_T == 4
#define MAX_FILE_SIZE INT_MAX32
#else
#define MAX_FILE_SIZE LONGLONG_MAX
#endif
#endif /* _my_base_h */
|
