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
|
/* Copyright (C) 2000 MySQL AB && Innobase Oy
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/*
This file is based on ha_berkeley.h of MySQL distribution
This file defines the Innodb handler: the interface between MySQL and
Innodb
*/
#ifdef __GNUC__
#pragma interface /* gcc class implementation */
#endif
typedef struct st_innobase_share {
THR_LOCK lock;
pthread_mutex_t mutex;
char *table_name;
uint table_name_length,use_count;
} INNOBASE_SHARE;
/* The class defining a handle to an Innodb table */
class ha_innobase: public handler
{
void* innobase_prebuilt; /* (row_prebuilt_t*) prebuilt
struct in Innodb, used to save
CPU */
THD* user_thd; /* the thread handle of the user
currently using the handle; this is
set in external_lock function */
ulong last_query_id; /* the latest query id where the
handle was used */
THR_LOCK_DATA lock;
INNOBASE_SHARE *share;
gptr alloc_ptr;
byte* upd_buff; /* buffer used in updates */
byte* key_val_buff; /* buffer used in converting
search key values from MySQL format
to Innodb format */
ulong int_table_flags;
uint primary_key;
uint last_dup_key;
ulong start_of_scan; /* this is set to 1 when we are
starting a table scan but have not
yet fetched any row, else 0 */
uint active_index_before_scan;
/* since a table scan in InnoDB is
always done through an index, a table
scan may change active_index; but
MySQL may assume that active_index
after a table scan is the same as
before; we store the value here so
that we can restore the value after
a scan */
uint last_match_mode;/* match mode of the latest search:
ROW_SEL_EXACT, ROW_SEL_EXACT_PREFIX,
or undefined */
longlong auto_inc_counter_for_this_stat;
ulong max_row_length(const byte *buf);
uint store_key_val_for_row(uint keynr, char* buff, const byte* record);
int update_thd(THD* thd);
int change_active_index(uint keynr);
int general_fetch(byte* buf, uint direction, uint match_mode);
int innobase_read_and_init_auto_inc(longlong* ret);
/* Init values for the class: */
public:
ha_innobase(TABLE *table): handler(table),
int_table_flags(HA_REC_NOT_IN_SEQ |
HA_KEYPOS_TO_RNDPOS | HA_LASTKEY_ORDER |
HA_NULL_KEY | HA_CAN_SQL_HANDLER |
HA_NOT_EXACT_COUNT |
HA_NO_WRITE_DELAYED |
HA_PRIMARY_KEY_IN_READ_INDEX |
HA_DROP_BEFORE_CREATE |
HA_NO_PREFIX_CHAR_KEYS |
HA_TABLE_SCAN_ON_INDEX),
last_dup_key((uint) -1),
start_of_scan(0)
{
}
~ha_innobase() {}
const char* table_type() const { return("InnoDB");}
const char *index_type(uint key_number) { return "BTREE"; }
const char** bas_ext() const;
ulong table_flags() const { return int_table_flags; }
ulong index_flags(uint idx) const
{
return (HA_READ_NEXT | HA_READ_PREV | HA_READ_ORDER |
HA_KEY_READ_ONLY);
}
uint max_record_length() const { return HA_MAX_REC_LENGTH; }
uint max_keys() const { return MAX_KEY; }
uint max_key_parts() const { return MAX_REF_PARTS; }
/* An InnoDB page must store >= 2 keys;
a secondary key record must also contain the
primary key value:
max key length is therefore set to slightly
less than 1 / 4 of page size which is 16 kB;
but currently MySQL does not work with keys
whose size is > MAX_KEY_LENGTH */
uint max_key_length() const { return((MAX_KEY_LENGTH <= 3500) ?
MAX_KEY_LENGTH : 3500);}
bool fast_key_read() { return 1;}
key_map keys_to_use_for_scanning() { return ~(key_map) 0; }
bool has_transactions() { return 1;}
int open(const char *name, int mode, uint test_if_locked);
void initialize(void);
int close(void);
double scan_time();
double read_time(uint index, uint ranges, ha_rows rows);
int write_row(byte * buf);
int update_row(const byte * old_data, byte * new_data);
int delete_row(const byte * buf);
int index_init(uint index);
int index_end();
int index_read(byte * buf, const byte * key,
uint key_len, enum ha_rkey_function find_flag);
int index_read_idx(byte * buf, uint index, const byte * key,
uint key_len, enum ha_rkey_function find_flag);
int index_read_last(byte * buf, const byte * key, uint key_len);
int index_next(byte * buf);
int index_next_same(byte * buf, const byte *key, uint keylen);
int index_prev(byte * buf);
int index_first(byte * buf);
int index_last(byte * buf);
int rnd_init(bool scan=1);
int rnd_end();
int rnd_next(byte *buf);
int rnd_pos(byte * buf, byte *pos);
void position(const byte *record);
void info(uint);
int analyze(THD* thd,HA_CHECK_OPT* check_opt);
int extra(enum ha_extra_function operation);
int reset(void);
int external_lock(THD *thd, int lock_type);
int start_stmt(THD *thd);
void position(byte *record);
ha_rows records_in_range(int inx,
const byte *start_key,uint start_key_len,
enum ha_rkey_function start_search_flag,
const byte *end_key,uint end_key_len,
enum ha_rkey_function end_search_flag);
ha_rows estimate_number_of_rows();
int create(const char *name, register TABLE *form,
HA_CREATE_INFO *create_info);
int delete_table(const char *name);
int rename_table(const char* from, const char* to);
int check(THD* thd, HA_CHECK_OPT* check_opt);
char* update_table_comment(const char* comment);
char* get_foreign_key_create_info();
void free_foreign_key_create_info(char* str);
THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
enum thr_lock_type lock_type);
void init_table_handle_for_HANDLER();
longlong get_auto_increment();
uint8 table_cache_type() { return HA_CACHE_TBL_ASKTRANSACT; }
};
extern bool innodb_skip;
extern uint innobase_init_flags, innobase_lock_type;
extern uint innobase_flush_log_at_trx_commit;
extern ulong innobase_cache_size;
extern char *innobase_home, *innobase_tmpdir, *innobase_logdir;
extern long innobase_lock_scan_time;
extern long innobase_mirrored_log_groups, innobase_log_files_in_group;
extern long innobase_log_file_size, innobase_log_buffer_size;
extern long innobase_buffer_pool_size, innobase_buffer_pool_awe_mem_mb,
innobase_additional_mem_pool_size;
extern long innobase_file_io_threads, innobase_lock_wait_timeout;
extern long innobase_force_recovery, innobase_thread_concurrency;
extern char *innobase_data_home_dir, *innobase_data_file_path;
extern char *innobase_log_group_home_dir, *innobase_log_arch_dir;
extern char *innobase_unix_file_flush_method;
/* The following variables have to be my_bool for SHOW VARIABLES to work */
extern my_bool innobase_log_archive,
innobase_use_native_aio, innobase_fast_shutdown;
extern "C" {
extern ulong srv_max_buf_pool_modified_pct;
}
extern TYPELIB innobase_lock_typelib;
bool innobase_init(void);
bool innobase_end(void);
bool innobase_flush_logs(void);
uint innobase_get_free_space(void);
int innobase_commit(THD *thd, void* trx_handle);
int innobase_report_binlog_offset_and_commit(
THD* thd,
void* trx_handle,
char* log_file_name,
my_off_t end_offset);
int innobase_commit_complete(
void* trx_handle);
int innobase_rollback(THD *thd, void* trx_handle);
int innobase_close_connection(THD *thd);
int innobase_drop_database(char *path);
int innodb_show_status(THD* thd);
bool innobase_query_caching_of_table_permitted(THD* thd, char* full_name,
uint full_name_len);
void innobase_release_temporary_latches(void* innobase_tid);
|
