Current File : //usr/include/mysql/server/private/maria.h
/* Copyright (C) 2006-2008 MySQL AB, 2008-2009 Sun Microsystems, Inc.
Copyright (c) 2009, 2019, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
/* This file should be included when using maria functions */
#ifndef _maria_h
#define _maria_h
#include <my_base.h>
#include <m_ctype.h>
#include "my_compare.h"
#include "ft_global.h"
#include <myisamchk.h>
#ifdef __cplusplus
extern "C" {
#endif
#define MARIA_UNIQUE_HASH_LENGTH 4
extern my_bool maria_delay_key_write;
uint maria_max_key_length(void);
#define maria_max_key_segments() HA_MAX_KEY_SEG
struct st_maria_bit_buff;
struct st_maria_page;
struct st_maria_s_param;
struct st_maria_share;
typedef struct st_maria_decode_tree MARIA_DECODE_TREE;
typedef struct st_maria_handler MARIA_HA;
typedef struct st_maria_key MARIA_KEY;
typedef ulonglong MARIA_RECORD_POS;
typedef struct st_maria_keydef /* Key definition with open & info */
{
struct st_maria_share *share; /* Pointer to base (set in open) */
mysql_rwlock_t root_lock; /* locking of tree */
uint16 keysegs; /* Number of key-segment */
uint16 flag; /* NOSAME, PACK_USED */
uint8 key_alg; /* BTREE, RTREE */
uint8 key_nr; /* key number (auto) */
uint16 block_length; /* Length of keyblock (auto) */
uint16 underflow_block_length; /* When to execute underflow */
uint16 keylength; /* Tot length of keyparts (auto) */
uint16 minlength; /* min length of (packed) key (auto) */
uint16 maxlength; /* max length of (packed) key (auto) */
uint16 max_store_length; /* Size to store key + overhead */
uint32 write_comp_flag; /* compare flag for write key (auto) */
uint32 version; /* For concurrent read/write */
uint32 ftkey_nr; /* full-text index number */
HA_KEYSEG *seg, *end;
struct st_mysql_ftparser *parser; /* Fulltext [pre]parser */
int (*bin_search)(const MARIA_KEY *key, const struct st_maria_page *page,
uint32 comp_flag, uchar **ret_pos, uchar *buff,
my_bool *was_last_key);
uint (*get_key)(MARIA_KEY *key, uint page_flag, uint nod_flag,
uchar **page);
uchar *(*skip_key)(MARIA_KEY *key, uint page_flag, uint nod_flag,
uchar *page);
int (*pack_key)(const MARIA_KEY *key, uint nod_flag,
uchar *next_key, uchar *org_key, uchar *prev_key,
struct st_maria_s_param *s_temp);
void (*store_key)(struct st_maria_keydef *keyinfo, uchar *key_pos,
struct st_maria_s_param *s_temp);
my_bool (*ck_insert)(MARIA_HA *inf, MARIA_KEY *key);
my_bool (*ck_delete)(MARIA_HA *inf, MARIA_KEY *klen);
MARIA_KEY *(*make_key)(MARIA_HA *info, MARIA_KEY *int_key, uint keynr,
uchar *key, const uchar *record,
MARIA_RECORD_POS filepos, ulonglong trid);
} MARIA_KEYDEF;
typedef struct st_maria_unique_def /* Segment definition of unique */
{
uint16 keysegs; /* Number of key-segment */
uint8 key; /* Mapped to which key */
uint8 null_are_equal;
HA_KEYSEG *seg, *end;
} MARIA_UNIQUEDEF;
/*
Note that null markers should always be first in a row !
When creating a column, one should only specify:
type, length, null_bit and null_pos
*/
typedef struct st_maria_columndef /* column information */
{
enum en_fieldtype type;
uint32 offset; /* Offset to position in row */
uint16 length; /* length of field */
uint16 column_nr;
/* Intern variable (size of total storage area for the row) */
uint16 fill_length;
uint16 null_pos; /* Position for null marker */
uint16 empty_pos; /* Position for empty marker */
uint8 null_bit; /* If column may be NULL */
/* Intern. Set if column should be zero packed (part of empty_bits) */
uint8 empty_bit;
#ifndef NOT_PACKED_DATABASES
void(*unpack)(struct st_maria_columndef *rec,
struct st_maria_bit_buff *buff,
uchar *start, uchar *end);
enum en_fieldtype base_type;
uint space_length_bits, pack_type;
MARIA_DECODE_TREE *huff_tree;
#endif
} MARIA_COLUMNDEF;
typedef struct st_maria_create_info
{
const char *index_file_name, *data_file_name; /* If using symlinks */
ha_rows max_rows;
ha_rows reloc_rows;
ulonglong auto_increment;
ulonglong data_file_length;
ulonglong key_file_length;
ulong s3_block_size;
/* Size of null bitmap at start of row */
uint null_bytes;
uint old_options;
uint compression_algorithm;
enum data_file_type org_data_file_type;
uint16 language;
my_bool with_auto_increment, transactional, encrypted;
} MARIA_CREATE_INFO;
extern int maria_create(const char *name, enum data_file_type record_type,
uint keys, MARIA_KEYDEF *keydef,
uint columns, MARIA_COLUMNDEF *columndef,
uint uniques, MARIA_UNIQUEDEF *uniquedef,
MARIA_CREATE_INFO *create_info, uint flags);
#ifdef __cplusplus
}
#endif
#endif
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