18
18
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21
/* The old structures from unireg */
23
#ifndef DRIZZLED_STRUCTS_H
24
#define DRIZZLED_STRUCTS_H
26
23
#include <drizzled/base.h>
27
#include <mysys/definitions.h>
24
#include <drizzled/definitions.h>
28
25
#include <drizzled/lex_string.h>
32
typedef struct st_io_cache IO_CACHE;
34
typedef struct st_date_time_format {
35
unsigned char positions[8];
36
char time_separator; /* Separator between hour and minute */
37
uint32_t flag; /* For future */
42
typedef struct st_keyfile_info { /* used with ha_info() */
43
unsigned char ref[MAX_REFLENGTH]; /* Pointer to current row */
44
unsigned char dupp_ref[MAX_REFLENGTH]; /* Pointer to dupp row */
45
uint32_t ref_length; /* Length of ref (1-8) */
46
uint32_t block_size; /* index block size */
47
File filenr; /* (uniq) filenr for table */
48
ha_rows records; /* Records i datafilen */
49
ha_rows deleted; /* Deleted records */
50
uint64_t data_file_length; /* Length off data file */
51
uint64_t max_data_file_length; /* Length off data file */
52
uint64_t index_file_length;
53
uint64_t max_index_file_length;
54
uint64_t delete_length; /* Free bytes */
55
uint64_t auto_increment_value;
56
int errkey,sortkey; /* Last errorkey and sorted by */
57
time_t create_time; /* When table was created */
60
uint64_t mean_rec_length; /* physical reclength */
64
typedef struct st_key_part_info { /* Info about a key part */
26
#include <drizzled/thr_lock.h>
31
{ /* Info about a key part */
66
uint offset; /* offset in record (from 0) */
67
uint null_offset; /* Offset to null_bit in record */
34
unsigned int offset; /* offset in record (from 0) */
35
unsigned int null_offset; /* Offset to null_bit in record */
68
36
/* Length of key part in bytes, excluding NULL flag and length bytes */
102
78
ulong *rec_per_key;
108
struct st_join_table;
110
typedef struct st_reginfo { /* Extra info about reg */
111
struct st_join_table *join_tab; /* Used by SELECT() */
86
public: /* Extra info about reg */
87
JoinTable *join_tab; /* Used by SELECT() */
112
88
enum thr_lock_type lock_type; /* How database is used */
113
89
bool not_exists_optimize;
114
90
bool impossible_range;
118
struct st_read_record; /* For referense later */
122
struct st_join_table;
124
typedef struct st_read_record { /* Parameter to read_record */
125
Table *table; /* Head-form */
127
Table **forms; /* head and ref forms */
128
int (*read_record)(struct st_read_record *);
131
uint32_t cache_records;
132
uint32_t ref_length,struct_length,reclength,rec_cache_size,error_offset;
134
unsigned char *ref_pos; /* pointer to form->refpos */
135
unsigned char *record;
136
unsigned char *rec_buf; /* to read field values after filesort */
137
unsigned char *cache,*cache_pos,*cache_end,*read_positions;
139
bool print_error, ignore_not_found_rows;
140
struct st_join_table *do_insideout_scan;
149
uint64_t minute,second,second_part;
154
typedef struct st_known_date_time_format {
155
const char *format_name;
156
const char *date_format;
157
const char *datetime_format;
158
const char *time_format;
159
} KNOWN_DATE_TIME_FORMAT;
162
extern const char *show_comp_option_name[];
164
typedef int *(*update_var)(Session *, struct st_mysql_show_var *);
166
typedef struct st_lex_user {
167
LEX_STRING user, host, password;
171
This structure specifies the maximum amount of resources which
172
can be consumed by each account. Zero value of a member means
175
typedef struct user_resources {
176
/* Maximum number of queries/statements per hour. */
179
Maximum number of updating statements per hour (which statements are
180
updating is defined by sql_command_flags array).
183
/* Maximum number of connections established per hour. */
184
uint32_t conn_per_hour;
185
/* Maximum number of concurrent connections. */
188
Values of this enum and specified_limits member are used by the
189
parser to store which user limits were specified in GRANT statement.
191
enum {QUERIES_PER_HOUR= 1, UPDATES_PER_HOUR= 2, CONNECTIONS_PER_HOUR= 4,
192
USER_CONNECTIONS= 8};
193
uint32_t specified_limits;
198
This structure is used for counting resources consumed and for checking
199
them against specified user limits.
201
typedef struct user_conn {
203
Pointer to user+host key (pair separated by '\0') defining the entity
204
for which resources are counted (By default it is user account thus
205
priv_user/priv_host pair is used. If --old-style-user-limits option
206
is enabled, resources are counted for each user+host separately).
209
/* Pointer to host part of the key. */
212
The moment of time when per hour counters were reset last time
213
(i.e. start of "hour" for conn_per_hour, updates, questions counters).
215
uint64_t reset_utime;
216
/* Total length of the key. */
218
/* Current amount of concurrent connections for this account. */
219
uint32_t connections;
221
Current number of connections per hour, number of updating statements
222
per hour and total number of statements per hour for this account.
224
uint32_t conn_per_hour, updates, questions;
225
/* Maximum amount of resources which account is allowed to consume. */
226
USER_RESOURCES user_resources;
229
/* Bits in form->update */
230
#define REG_MAKE_DUPP 1 /* Make a copy of record when read */
231
#define REG_NEW_RECORD 2 /* Write a new record if not found */
232
#define REG_UPDATE 4 /* Uppdate record */
233
#define REG_DELETE 8 /* Delete found record */
234
#define REG_PROG 16 /* User is updating database */
235
#define REG_CLEAR_AFTER_WRITE 32
236
#define REG_MAY_BE_UPDATED 64
237
#define REG_AUTO_UPDATE 64 /* Used in D-forms for scroll-tables */
238
#define REG_OVERWRITE 128
239
#define REG_SKIP_DUP 256
92
: join_tab(NULL), lock_type(TL_UNLOCK),
93
not_exists_optimize(false), impossible_range(false) {}
98
not_exists_optimize= false;
99
impossible_range= false;
103
typedef int *(*update_var)(Session *, struct drizzle_show_var *);
105
} /* namespace drizzled */
241
107
/* Bits in form->status */
242
108
#define STATUS_NO_RECORD (1+2) /* Record isn't usably */
243
109
#define STATUS_GARBAGE 1
244
110
#define STATUS_NOT_FOUND 2 /* No record in database when needed */
245
111
#define STATUS_NO_PARENT 4 /* Parent record wasn't found */
246
#define STATUS_NOT_READ 8 /* Record isn't read */
247
#define STATUS_UPDATED 16 /* Record is updated by formula */
248
112
#define STATUS_NULL_ROW 32 /* table->null_row is set */
249
#define STATUS_DELETED 64
252
Such interval is "discrete": it is the set of
253
{ auto_inc_interval_min + k * increment,
254
0 <= k <= (auto_inc_interval_values-1) }
255
Where "increment" is maintained separately by the user of this class (and is
256
currently only session->variables.auto_increment_increment).
257
It mustn't derive from Sql_alloc, because SET INSERT_ID needs to
258
allocate memory which must stay allocated for use by the next statement.
260
class Discrete_interval {
262
uint64_t interval_min;
263
uint64_t interval_values;
264
uint64_t interval_max; // excluded bound. Redundant.
266
Discrete_interval *next; // used when linked into Discrete_intervals_list
267
void replace(uint64_t start, uint64_t val, uint64_t incr)
270
interval_values= val;
271
interval_max= (val == UINT64_MAX) ? val : start + val * incr;
273
Discrete_interval(uint64_t start, uint64_t val, uint64_t incr) :
274
interval_min(start), interval_values(val),
275
interval_max((val == UINT64_MAX) ? val : start + val * incr),
278
Discrete_interval() :
279
interval_min(0), interval_values(0),
280
interval_max(0), next(NULL)
282
uint64_t minimum() const { return interval_min; };
283
uint64_t values() const { return interval_values; };
284
uint64_t maximum() const { return interval_max; };
286
If appending [3,5] to [1,2], we merge both in [1,5] (they should have the
287
same increment for that, user of the class has to ensure that). That is
288
just a space optimization. Returns 0 if merge succeeded.
290
bool merge_if_contiguous(uint64_t start, uint64_t val, uint64_t incr)
292
if (interval_max == start)
294
if (val == UINT64_MAX)
296
interval_values= interval_max= val;
300
interval_values+= val;
301
interval_max= start + val * incr;
309
/* List of Discrete_interval objects */
310
class Discrete_intervals_list {
312
Discrete_interval *head;
313
Discrete_interval *tail;
315
When many intervals are provided at the beginning of the execution of a
316
statement (in a replication slave or SET INSERT_ID), "current" points to
317
the interval being consumed by the thread now (so "current" goes from
318
"head" to "tail" then to NULL).
320
Discrete_interval *current;
321
uint32_t elements; // number of elements
323
/* helper function for copy construct and assignment operator */
324
void copy_(const Discrete_intervals_list& from)
326
for (Discrete_interval *i= from.head; i; i= i->next)
328
Discrete_interval j= *i;
333
Discrete_intervals_list() :
334
head(NULL), tail(NULL),
335
current(NULL), elements(0) {};
336
Discrete_intervals_list(const Discrete_intervals_list& from) :
337
head(NULL), tail(NULL),
338
current(NULL), elements(0)
342
Discrete_intervals_list& operator=(const Discrete_intervals_list& from)
355
for (Discrete_interval *i= head; i;)
357
Discrete_interval *next= i->next;
364
const Discrete_interval* get_next()
366
Discrete_interval *tmp= current;
368
current= current->next;
371
~Discrete_intervals_list() { empty(); };
372
bool append(uint64_t start, uint64_t val, uint64_t incr);
373
bool append(Discrete_interval *interval);
374
uint64_t minimum() const { return (head ? head->minimum() : 0); };
375
uint64_t maximum() const { return (head ? tail->maximum() : 0); };
376
uint32_t nb_elements() const { return elements; }
379
#endif /* DRIZZLED_STRUCTS_H */