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mariadb/include/myisam.h
unknown 70aa7424c4 Big code cleanup/review before 4.0.2 release. 
(All commit emails since 4.0.1 checked)
This had to be done now, before the 4.1 tree changes to much, to make it easy to propagate bug fixes to the 4.1 tree.


BUILD/SETUP.sh:
  Added -DPEDANTIC_SAFEMALLOC as standard debug option
Docs/manual.texi:
  Changes for new version.
client/mysql.cc:
  Fixed default value for rehash
  cleanup
client/mysqladmin.c:
  Cleanup
client/mysqlbinlog.cc:
  cleanup
client/mysqldump.c:
  Cleanup
client/mysqlmanager-pwgen.c:
  Cleanup
client/mysqlmanagerc.c:
  Cleanup
client/mysqltest.c:
  Cleanup
dbug/dbug.c:
  Cleanup
extra/resolve_stack_dump.c:
  Cleanup & Simple optimizations
include/ft_global.h:
  Cleanup
include/my_alloc.h:
  Cleanup
include/my_global.h:
  Cleanup
include/my_sys.h:
  Cleanup
include/myisam.h:
  Cleanup
libmysql/libmysql.c:
  Cleanup
libmysql/manager.c:
  Cleanup
myisam/ft_boolean_search.c:
  Cleanup
myisam/ft_dump.c:
  Change strcpy -> strmov
myisam/ft_eval.c:
  Cleanup
myisam/ft_nlq_search.c:
  Cleanup
myisam/ft_test1.c:
  strncpy -> strnmov
myisam/ft_update.c:
  Cleanup
myisam/mi_static.c:
  Cleanup
myisam/mi_test2.c:
  Cleanup
myisam/mi_write.c:
  Cleanup
mysys/mf_fn_ext.c:
  Cleanup
mysys/mf_iocache.c:
  Cleanup
mysys/mf_iocache2.c:
  Cleanup
mysys/my_getopt.c:
  Cleanup
mysys/my_read.c:
  Cleanup
mysys/my_thr_init.c:
  Cleanup
mysys/queues.c:
  Cleanup
mysys/safemalloc.c:
  Cleanup
sql/field.cc:
  Indentation cleanups
sql/ha_berkeley.cc:
  Indentation cleanups
sql/ha_myisam.cc:
  Cleanup
sql/item.h:
  Indentation cleanups
sql/item_cmpfunc.cc:
  Indentation cleanups
sql/item_create.cc:
  cleanup
sql/item_func.cc:
  Cleanup
sql/item_func.h:
  Indentation cleanups
sql/item_strfunc.cc:
  Indentation cleanups
sql/item_sum.cc:
  Indentation cleanups
sql/item_timefunc.cc:
  Indentation cleanups
sql/lock.cc:
  Indentation cleanups
sql/log.cc:
  Cleanup
  strnmov -> strmake
sql/log_event.cc:
  Cleanup + optimizations
  Fixed memory leak
  Added missing pthread_mutex_unlock()  (On error condition)
sql/log_event.h:
  Indentation and comment cleanup
  Merged #ifdef's into common blocks for better readability
sql/mini_client.cc:
  Indentation cleanup
sql/mysql_priv.h:
  Cleanup
  Changed int function to bool
sql/mysqld.cc:
  Indentation and comment cleanup
sql/net_pkg.cc:
  Indentation cleanup
sql/net_serv.cc:
  Changed int function -> bool
sql/nt_servc.cc:
  Cleanup
sql/opt_range.cc:
  Indentation cleanup
sql/repl_failsafe.cc:
  Cleanup + simple optimization
  strnmov -> strmake
sql/slave.cc:
  strnmov -> strmake
  Cleanups
sql/slave.h:
  Cleanup
sql/sql_acl.cc:
  Indentation and DBUG_PRINT cleanup
  Changed WITH MAX... to not use =
sql/sql_base.cc:
  Indentation cleanup
sql/sql_cache.cc:
  Indentation cleanup
sql/sql_class.cc:
  Indentation cleanup
sql/sql_class.h:
  Renamed some struct slots
sql/sql_delete.cc:
  Indentation cleanup
sql/sql_handler.cc:
  Indentation cleanup
sql/sql_insert.cc:
  Use new slot names.
sql/sql_lex.cc:
  Indentation cleanup
sql/sql_lex.h:
  Indentation cleanup
sql/sql_load.cc:
  Indentation cleanup
sql/sql_parse.cc:
  Indentation cleanup
  Removed not used check from LOCK TABLES
sql/sql_repl.cc:
  strnmov -> strmake
sql/sql_repl.h:
  Removed test if file is included (We want to know if it's included twice to avoid this)
sql/sql_select.cc:
  Indentation cleanup
sql/sql_show.cc:
  Indentation cleanup
sql/sql_string.cc:
  Indentation cleanup
sql/sql_table.cc:
  Indentation cleanup
sql/sql_union.cc:
  Use renamed struct slot
sql/sql_update.cc:
  Indentation cleanup
sql/sql_yacc.yy:
  Removed = after GRANT ... MAX_  to make the syntax uniform
sql/table.cc:
  Indentation cleanup
sql/table.h:
  Indentation cleanup
sql/time.cc:
  Indentation cleanup
sql/udf_example.cc:
  Indentation cleanup
sql/unireg.cc:
  strnmov -> strmake
tests/grant.pl:
  Added test for LOCK TABLES
tools/mysqlmanager.c:
  Cleanup
  fopen() -> my_fopen()
vio/viosocket.c:
  DBUG_PRINT cleanups
vio/viosslfactories.c:
  Indentation cleanup
  Checking of results from malloc()
  Fixed possible memory leak
BitKeeper/etc/ignore:
  Added scripts/mysql_secure_installation to the ignore list
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted
2002-06-11 11:20:31 +03:00

425 lines
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/* Copyright (C) 2000 MySQL AB
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 should be included when using myisam_funktions */
#ifndef _myisam_h
#define _myisam_h
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _my_base_h
#include <my_base.h>
#endif
#ifndef _m_ctype_h
#include <m_ctype.h>
#endif
/* defines used by myisam-funktions */
/* The following defines can be increased if necessary */
#define MI_MAX_KEY 32 /* Max allowed keys */
#define MI_MAX_KEY_SEG 16 /* Max segments for key */
#define MI_MAX_KEY_LENGTH 500
#define MI_MAX_KEY_BUFF (MI_MAX_KEY_LENGTH+MI_MAX_KEY_SEG*6+8+8)
#define MI_MAX_POSSIBLE_KEY_BUFF (1024+6+6) /* For myisam_chk */
#define MI_MAX_POSSIBLE_KEY 64 /* For myisam_chk */
#define MI_MAX_MSG_BUF 1024 /* used in CHECK TABLE, REPAIR TABLE */
#define MI_NAME_IEXT ".MYI"
#define MI_NAME_DEXT ".MYD"
/* Max extra space to use when sorting keys */
#define MI_MAX_TEMP_LENGTH 256*1024L*1024L
/* Possible values for myisam_block_size (must be power of 2) */
#define MI_KEY_BLOCK_LENGTH 1024 /* default key block length */
#define MI_MIN_KEY_BLOCK_LENGTH 1024 /* Min key block length */
#define MI_MAX_KEY_BLOCK_LENGTH 16384
#define mi_portable_sizeof_char_ptr 8
typedef uint32 ha_checksum;
/* Param to/from mi_info */
typedef struct st_mi_isaminfo /* Struct from h_info */
{
ha_rows records; /* Records in database */
ha_rows deleted; /* Deleted records in database */
my_off_t recpos; /* Pos for last used record */
my_off_t newrecpos; /* Pos if we write new record */
my_off_t dupp_key_pos; /* Position to record with dupp key */
my_off_t data_file_length, /* Length of data file */
max_data_file_length,
index_file_length,
max_index_file_length,
delete_length;
ulong reclength; /* Recordlength */
ulong mean_reclength; /* Mean recordlength (if packed) */
ulonglong auto_increment;
ulonglong key_map; /* Which keys are used */
char *data_file_name, *index_file_name;
uint keys; /* Number of keys in use */
uint options; /* HA_OPTION_... used */
int errkey, /* With key was dupplicated on err */
sortkey; /* clustered by this key */
File filenr; /* (uniq) filenr for datafile */
time_t create_time; /* When table was created */
time_t check_time;
time_t update_time;
uint reflength;
ulong record_offset;
ulong *rec_per_key; /* for sql optimizing */
uint raid_type,raid_chunks;
ulong raid_chunksize;
} MI_ISAMINFO;
typedef struct st_mi_create_info
{
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;
uint raid_type,raid_chunks;
ulong raid_chunksize;
uint old_options;
uint8 language;
} MI_CREATE_INFO;
struct st_myisam_info; /* For referense */
typedef struct st_myisam_info MI_INFO;
typedef struct st_mi_keyseg /* Key-portion */
{
uint8 type; /* Type of key (for sort) */
uint8 language;
uint8 null_bit; /* bitmask to test for NULL */
uint8 bit_start,bit_end; /* if bit field */
uint16 flag;
uint16 length; /* Keylength */
uint32 start; /* Start of key in record */
uint32 null_pos; /* position to NULL indicator */
CHARSET_INFO *charset;
} MI_KEYSEG;
struct st_mi_s_param;
typedef struct st_mi_keydef /* Key definition with open & info */
{
uint16 keysegs; /* Number of key-segment */
uint16 flag; /* NOSAME, PACK_USED */
uint8 key_alg; /* BTREE, RTREE */
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 block_size; /* block_size (auto) */
uint32 version; /* For concurrent read/write */
MI_KEYSEG *seg,*end;
int (*bin_search)(struct st_myisam_info *info,struct st_mi_keydef *keyinfo,
uchar *page,uchar *key,
uint key_len,uint comp_flag,uchar * *ret_pos,
uchar *buff, my_bool *was_last_key);
uint (*get_key)(struct st_mi_keydef *keyinfo,uint nod_flag,uchar * *page,
uchar *key);
int (*pack_key)(struct st_mi_keydef *keyinfo,uint nod_flag,uchar *next_key,
uchar *org_key, uchar *prev_key, uchar *key,
struct st_mi_s_param *s_temp);
void (*store_key)(struct st_mi_keydef *keyinfo, uchar *key_pos,
struct st_mi_s_param *s_temp);
} MI_KEYDEF;
#define MI_UNIQUE_HASH_LENGTH 4
typedef struct st_unique_def /* Segment definition of unique */
{
uint16 keysegs; /* Number of key-segment */
uchar key; /* Mapped to which key */
uint8 null_are_equal;
MI_KEYSEG *seg,*end;
} MI_UNIQUEDEF;
typedef struct st_mi_decode_tree /* Decode huff-table */
{
uint16 *table;
uint quick_table_bits;
byte *intervalls;
} MI_DECODE_TREE;
struct st_mi_bit_buff;
/*
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_columndef /* column information */
{
int16 type; /* en_fieldtype */
uint16 length; /* length of field */
uint32 offset; /* Offset to position in row */
uint8 null_bit; /* If column may be 0 */
uint16 null_pos; /* position for null marker */
#ifndef NOT_PACKED_DATABASES
void (*unpack)(struct st_columndef *rec,struct st_mi_bit_buff *buff,
uchar *start,uchar *end);
enum en_fieldtype base_type;
uint space_length_bits,pack_type;
MI_DECODE_TREE *huff_tree;
#endif
} MI_COLUMNDEF;
/* invalidator function reference for Query Cache */
typedef void (* invalidator_by_filename)(const char * filename);
extern my_string myisam_log_filename; /* Name of logfile */
extern uint myisam_block_size;
extern my_bool myisam_flush,myisam_delay_key_write,myisam_single_user;
extern my_bool myisam_concurrent_insert;
extern my_off_t myisam_max_temp_length,myisam_max_extra_temp_length;
extern ulong myisam_bulk_insert_tree_size;
/* Prototypes for myisam-functions */
extern int mi_close(struct st_myisam_info *file);
extern int mi_delete(struct st_myisam_info *file,const byte *buff);
extern struct st_myisam_info *mi_open(const char *name,int mode,
uint wait_if_locked);
extern int mi_panic(enum ha_panic_function function);
extern int mi_rfirst(struct st_myisam_info *file,byte *buf,int inx);
extern int mi_rkey(struct st_myisam_info *file,byte *buf,int inx,
const byte *key,
uint key_len, enum ha_rkey_function search_flag);
extern int mi_rlast(struct st_myisam_info *file,byte *buf,int inx);
extern int mi_rnext(struct st_myisam_info *file,byte *buf,int inx);
extern int mi_rnext_same(struct st_myisam_info *info, byte *buf);
extern int mi_rprev(struct st_myisam_info *file,byte *buf,int inx);
extern int mi_rrnd(struct st_myisam_info *file,byte *buf, my_off_t pos);
extern int mi_scan_init(struct st_myisam_info *file);
extern int mi_scan(struct st_myisam_info *file,byte *buf);
extern int mi_rsame(struct st_myisam_info *file,byte *record,int inx);
extern int mi_rsame_with_pos(struct st_myisam_info *file,byte *record,
int inx, my_off_t pos);
extern int mi_update(struct st_myisam_info *file,const byte *old,
byte *new_record);
extern int mi_write(struct st_myisam_info *file,byte *buff);
extern my_off_t mi_position(struct st_myisam_info *file);
extern int mi_status(struct st_myisam_info *info, MI_ISAMINFO *x, uint flag);
extern int mi_lock_database(struct st_myisam_info *file,int lock_type);
extern int mi_create(const char *name,uint keys,MI_KEYDEF *keydef,
uint columns, MI_COLUMNDEF *columndef,
uint uniques, MI_UNIQUEDEF *uniquedef,
MI_CREATE_INFO *create_info, uint flags);
extern int mi_delete_table(const char *name);
extern int mi_rename(const char *from, const char *to);
extern int mi_extra(struct st_myisam_info *file,
enum ha_extra_function function);
extern ha_rows mi_records_in_range(struct st_myisam_info *info,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);
extern int mi_log(int activate_log);
extern int mi_is_changed(struct st_myisam_info *info);
extern int mi_delete_all_rows(struct st_myisam_info *info);
extern ulong _mi_calc_blob_length(uint length , const byte *pos);
extern uint mi_get_pointer_length(ulonglong file_length, uint def);
/* this is used to pass to mysql_myisamchk_table -- by Sasha Pachev */
#define MYISAMCHK_REPAIR 1 /* equivalent to myisamchk -r*/
#define MYISAMCHK_VERIFY 2 /* run equivalent of myisamchk -c,
* if corruption is detected, do myisamchk -r*/
/*
Definitions needed for myisamchk.c
Entries marked as "QQ to be removed" are NOT used to
pass check/repair options to mi_check.c. They are used
internally by myisamchk.c or/and ha_myisam.cc and should NOT
be stored together with other flags. They should be removed
from the following list to make adding of new flags possible.
*/
#define T_VERBOSE 1
#define T_SILENT 2
#define T_DESCRIPT 4
#define T_EXTEND 8
#define T_INFO 16
#define T_REP 32
#define T_FORCE_UNIQUENESS 64
#define T_FORCE_CREATE 128
#define T_WRITE_LOOP 256
#define T_UNPACK 512
#define T_STATISTICS (1L << 10)
#define T_VERY_SILENT (1L << 11)
#define T_SORT_RECORDS (1L << 12) /* QQ to be removed */
#define T_SORT_INDEX (1L << 13) /* QQ to be removed */
#define T_WAIT_FOREVER (1L << 14)
#define T_REP_BY_SORT (1L << 15)
#define T_FAST (1L << 16) /* QQ to be removed */
#define T_READONLY (1L << 17) /* QQ to be removed */
#define T_MEDIUM (1L << 18)
#define T_AUTO_INC (1L << 19)
#define T_CHECK (1L << 20) /* QQ to be removed */
#define T_UPDATE_STATE (1L << 21)
#define T_CHECK_ONLY_CHANGED (1L << 22) /* QQ to be removed */
#define T_DONT_CHECK_CHECKSUM (1L << 23)
#define T_TRUST_HEADER (1L << 24)
#define T_CREATE_MISSING_KEYS (1L << 25)
#define T_SAFE_REPAIR (1L << 26)
#define T_AUTO_REPAIR (1L << 27) /* QQ to be removed */
#define T_BACKUP_DATA (1L << 28)
#define T_CALC_CHECKSUM (1L << 29)
#define T_QUICK (1L << 30)
#define T_RETRY_WITHOUT_QUICK (1L << 31)
/*
Flags used by myisamchk.c or/and ha_myisam.cc that are NOT passed
to mi_check.c follows:
*/
#define TT_USEFRM 1
#define O_NEW_INDEX 1 /* Bits set in out_flag */
#define O_NEW_DATA 2
#define O_DATA_LOST 4
/* these struct is used by my_check to tell it what to do */
typedef struct st_sort_key_blocks /* Used when sorting */
{
uchar *buff,*end_pos;
uchar lastkey[MI_MAX_POSSIBLE_KEY_BUFF];
uint last_length;
int inited;
} SORT_KEY_BLOCKS;
struct st_mi_check_param;
typedef struct st_sort_info
{
MI_INFO *info;
struct st_mi_check_param *param;
enum data_file_type new_data_file_type;
SORT_KEY_BLOCKS *key_block,*key_block_end;
uint key,find_length,real_key_length;
my_off_t pos,max_pos,filepos,start_recpos,filelength,dupp,buff_length;
ha_rows max_records;
ulonglong unique[MI_MAX_KEY_SEG+1];
my_bool fix_datafile;
char *record,*buff;
void *wordlist, *wordptr;
MI_KEYDEF *keyinfo;
MI_KEYSEG *keyseg;
} SORT_INFO;
typedef struct st_mi_check_param
{
ulonglong auto_increment_value;
ulonglong max_data_file_length;
ulonglong keys_in_use;
my_off_t search_after_block;
my_off_t new_file_pos,key_file_blocks;
my_off_t keydata,totaldata,key_blocks,start_check_pos;
ha_rows total_records,total_deleted;
ha_checksum record_checksum,glob_crc;
ulong use_buffers,read_buffer_length,write_buffer_length,
sort_buffer_length,sort_key_blocks;
uint out_flag,warning_printed,error_printed,verbose;
uint opt_sort_key,total_files,max_level;
uint testflag;
uint8 language;
my_bool using_global_keycache, opt_lock_memory, opt_follow_links;
my_bool retry_repair, force_sort, calc_checksum;
char temp_filename[FN_REFLEN],*isam_file_name,*tmpdir;
int tmpfile_createflag;
myf myf_rw;
IO_CACHE read_cache;
SORT_INFO sort_info;
ulonglong unique_count[MI_MAX_KEY_SEG+1];
ha_checksum key_crc[MI_MAX_POSSIBLE_KEY];
ulong rec_per_key_part[MI_MAX_KEY_SEG*MI_MAX_POSSIBLE_KEY];
void *thd;
char *db_name,*table_name;
char *op_name;
} MI_CHECK;
typedef struct st_mi_sortinfo
{
ha_rows max_records;
SORT_INFO *sort_info;
char *tmpdir;
int (*key_cmp)(SORT_INFO *info, const void *, const void *);
int (*key_read)(SORT_INFO *info,void *buff);
int (*key_write)(SORT_INFO *info, const void *buff);
void (*lock_in_memory)(MI_CHECK *info);
uint key_length;
myf myf_rw;
} MI_SORT_PARAM;
/* functions in mi_check */
void myisamchk_init(MI_CHECK *param);
int chk_status(MI_CHECK *param, MI_INFO *info);
int chk_del(MI_CHECK *param, register MI_INFO *info, uint test_flag);
int chk_size(MI_CHECK *param, MI_INFO *info);
int chk_key(MI_CHECK *param, MI_INFO *info);
int chk_data_link(MI_CHECK *param, MI_INFO *info,int extend);
int mi_repair(MI_CHECK *param, register MI_INFO *info,
my_string name, int rep_quick);
int mi_sort_index(MI_CHECK *param, register MI_INFO *info, my_string name);
int mi_repair_by_sort(MI_CHECK *param, register MI_INFO *info,
const char * name, int rep_quick);
int change_to_newfile(const char * filename, const char * old_ext,
const char * new_ext, uint raid_chunks,
myf myflags);
int lock_file(MI_CHECK *param, File file, my_off_t start, int lock_type,
const char *filetype, const char *filename);
void lock_memory(MI_CHECK *param);
int flush_blocks(MI_CHECK *param, File file);
void update_auto_increment_key(MI_CHECK *param, MI_INFO *info,
my_bool repair);
int update_state_info(MI_CHECK *param, MI_INFO *info,uint update);
int filecopy(MI_CHECK *param, File to,File from,my_off_t start,
my_off_t length, const char *type);
int movepoint(MI_INFO *info,byte *record,my_off_t oldpos,
my_off_t newpos, uint prot_key);
int sort_write_record(SORT_INFO *sort_info);
int write_data_suffix(MI_CHECK *param, MI_INFO *info);
int _create_index_by_sort(MI_SORT_PARAM *info,my_bool no_messages,
ulong);
int test_if_almost_full(MI_INFO *info);
int recreate_table(MI_CHECK *param, MI_INFO **org_info, char *filename);
void mi_disable_non_unique_index(MI_INFO *info, ha_rows rows);
my_bool mi_test_if_sort_rep(MI_INFO *info, ha_rows rows, ulonglong key_map,
my_bool force);
#ifdef __cplusplus
}
#endif
#endif
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