diff options
Diffstat (limited to 'storage/myisam/myisamdef.h')
| -rw-r--r-- | storage/myisam/myisamdef.h | 803 |
1 files changed, 803 insertions, 0 deletions
diff --git a/storage/myisam/myisamdef.h b/storage/myisam/myisamdef.h new file mode 100644 index 00000000..c90d989c --- /dev/null +++ b/storage/myisam/myisamdef.h @@ -0,0 +1,803 @@ +/* + Copyright (c) 2000, 2012, Oracle and/or its affiliates. + Copyright (c) 2017, 2022, 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; version 2 of the License. + + 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 St, Fifth Floor, Boston, MA 02110-1335 USA */ + +/* This file is included by all internal myisam files */ + +#include <my_global.h> +#include <myisam.h> /* Structs & some defines */ +#include <myisampack.h> /* packing of keys */ +#include <my_tree.h> +#include <my_pthread.h> +#include <thr_lock.h> +#include <mysql/psi/mysql_file.h> + +C_MODE_START + +typedef struct st_mi_status_info +{ + ha_rows records; /* Rows in table */ + ha_rows del; /* Removed rows */ + my_off_t empty; /* lost space in datafile */ + my_off_t key_empty; /* lost space in indexfile */ + my_off_t key_file_length; + my_off_t data_file_length; + ha_checksum checksum; + my_bool uncacheable; /* Active concurrent insert */ +} MI_STATUS_INFO; + +typedef struct st_mi_state_info +{ + struct + { /* Fileheader */ + uchar file_version[4]; + uchar options[2]; + uchar header_length[2]; + uchar state_info_length[2]; + uchar base_info_length[2]; + uchar base_pos[2]; + uchar key_parts[2]; /* Key parts */ + uchar unique_key_parts[2]; /* Key parts + unique parts */ + uchar keys; /* number of keys in file */ + uchar uniques; /* number of UNIQUE definitions */ + uchar language; /* Language for indexes */ + uchar max_block_size_index; /* max keyblock size */ + uchar fulltext_keys; + uchar not_used; /* To align to 8 */ + } header; + + MI_STATUS_INFO state; + ha_rows split; /* number of split blocks */ + my_off_t dellink; /* Link to next removed block */ + ulonglong auto_increment; + ulong process; /* process that updated table last */ + ulong unique; /* Unique number for this process */ + ulong update_count; /* Updated for each write lock */ + ulong status; + ulong *rec_per_key_part; + ha_checksum checksum; /* Table checksum */ + my_off_t *key_root; /* Start of key trees */ + my_off_t *key_del; /* delete links for trees */ + my_off_t rec_per_key_rows; /* Rows when calculating rec_per_key */ + + ulong sec_index_changed; /* Updated when new sec_index */ + ulong sec_index_used; /* which extra index are in use */ + ulonglong key_map; /* Which keys are in use */ + ulong version; /* timestamp of create */ + time_t create_time; /* Time when created database */ + time_t recover_time; /* Time for last recover */ + time_t check_time; /* Time for last check */ + uint sortkey; /* sorted by this key (not used) */ + uint open_count; + uint8 changed; /* Changed since myisamchk */ + + uint8 dupp_key; /* Lastly processed index with */ + /* violated uniqueness constraint */ + + /* the following isn't saved on disk */ + uint state_diff_length; /* Should be 0 */ + uint state_length; /* Length of state header in file */ + ulong *key_info; +} MI_STATE_INFO; + +#define MI_STATE_INFO_SIZE (24+14*8+7*4+2*2+8) +#define MI_STATE_KEY_SIZE 8U +#define MI_STATE_KEYBLOCK_SIZE 8U +#define MI_STATE_KEYSEG_SIZE 4U +#define MI_STATE_EXTRA_SIZE ((MI_MAX_KEY+MI_MAX_KEY_BLOCK_SIZE)*MI_STATE_KEY_SIZE + MI_MAX_KEY*HA_MAX_KEY_SEG*MI_STATE_KEYSEG_SIZE) +#define MI_KEYDEF_SIZE (2+ 5*2) +#define MI_UNIQUEDEF_SIZE (2+1+1) +#define HA_KEYSEG_SIZE (6+ 2*2 + 4*2) +#define MI_COLUMNDEF_SIZE (2*3+1) +#define MI_BASE_INFO_SIZE (5*8 + 8*4 + 4 + 4*2 + 16) +#define MI_INDEX_BLOCK_MARGIN 16U /* Safety margin for .MYI tables */ + +typedef struct st_mi_base_info +{ + my_off_t keystart; /* Start of keys */ + my_off_t max_data_file_length; + my_off_t max_key_file_length; + my_off_t margin_key_file_length; + ha_rows records, reloc; /* Create information */ + ulong mean_row_length; /* Create information */ + ulong reclength; /* length of unpacked record */ + ulong pack_reclength; /* Length of full packed rec. */ + ulong min_pack_length; + ulong max_pack_length; /* Max possibly length of packed rec.*/ + ulong min_block_length; + ulong fields, /* fields in table */ + pack_fields; /* packed fields in table */ + uint rec_reflength; /* = 2-8 */ + uint key_reflength; /* = 2-8 */ + uint keys; /* same as in state.header */ + uint auto_key; /* Which key-1 is a auto key */ + uint blobs; /* Number of blobs */ + uint pack_bits; /* Length of packed bits */ + uint max_key_block_length; /* Max block length */ + uint max_key_length; /* Max key length */ + /* Extra allocation when using dynamic record format */ + uint extra_alloc_bytes; + uint extra_alloc_procent; + /* The following are from the header */ + uint key_parts, all_key_parts; +} MI_BASE_INFO; + + + /* Structs used intern in database */ + +typedef struct st_mi_blob /* Info of record */ +{ + ulong offset; /* Offset to blob in record */ + uint pack_length; /* Type of packed length */ + ulong length; /* Calc:ed for each record */ +} MI_BLOB; + + +typedef struct st_mi_isam_pack +{ + ulong header_length; + uint ref_length; + uchar version; +} MI_PACK; + +#define MAX_NONMAPPED_INSERTS 1000 + +typedef struct st_mi_isam_share +{ /* Shared between opens */ + MI_STATE_INFO state; + MI_BASE_INFO base; + MI_KEYDEF ft2_keyinfo; /* Second-level ft-key definition */ + MI_KEYDEF *keyinfo; /* Key definitions */ + MI_UNIQUEDEF *uniqueinfo; /* unique definitions */ + HA_KEYSEG *keyparts; /* key part info */ + MI_COLUMNDEF *rec; /* Pointer to field information */ + MI_PACK pack; /* Data about packed records */ + MI_BLOB *blobs; /* Pointer to blobs */ + LIST *in_use; /* List of threads using this table */ + char *unique_file_name; /* realpath() of index file */ + char *data_file_name, /* Resolved path names from symlinks */ + *index_file_name; + uchar *file_map; /* mem-map of file if possible */ + KEY_CACHE *key_cache; /* ref to the current key cache */ + /* To mark the key cache partitions containing dirty pages for this file */ + ulonglong dirty_part_map; + MI_DECODE_TREE *decode_trees; + uint16 *decode_tables; + /* Function to use for a row checksum. */ + int(*read_record) (struct st_myisam_info *, my_off_t, uchar*); + int(*write_record) (struct st_myisam_info *, const uchar*); + int(*update_record) (struct st_myisam_info *, my_off_t, const uchar*); + int(*delete_record) (struct st_myisam_info *); + int(*read_rnd) (struct st_myisam_info *, uchar*, my_off_t, my_bool); + int(*compare_record) (struct st_myisam_info *, const uchar*); + ha_checksum(*calc_checksum) (struct st_myisam_info *, const uchar*); + /* calculate checksum for a row during check table */ + ha_checksum(*calc_check_checksum)(struct st_myisam_info *, const uchar *); + int(*compare_unique) (struct st_myisam_info *, MI_UNIQUEDEF *, + const uchar *record, my_off_t pos); + size_t (*file_read) (MI_INFO *, uchar *, size_t, my_off_t, myf); + size_t (*file_write) (MI_INFO *, const uchar *, size_t, my_off_t, myf); + invalidator_by_filename invalidator; /* query cache invalidator */ + /* query cache invalidator for changing state */ + invalidator_by_filename chst_invalidator; + ulong this_process; /* processid */ + ulong last_process; /* For table-change-check */ + ulong last_version; /* Version on start */ + ulong options; /* Options used */ + ulong min_pack_length; /* These are used by packed data */ + ulong max_pack_length; + ulong state_diff_length; + uint rec_reflength; /* rec_reflength in use now */ + ulong vreclength; /* full reclength, including vcols */ + uint unique_name_length; + uint32 ftkeys; /* Number of full-text keys + 1 */ + File kfile; /* Shared keyfile */ + File data_file; /* Shared data file */ + int mode; /* mode of file on open */ + uint reopen; /* How many times reopened */ + uint w_locks,r_locks,tot_locks; /* Number of read/write locks */ + uint blocksize; /* blocksize of keyfile */ + myf write_flag; + enum data_file_type data_file_type; + /* Below flag is needed to make log tables work with concurrent insert */ + my_bool is_log_table; + /* This is 1 if they table checksum is of old type */ + my_bool has_null_fields; + my_bool has_varchar_fields; + + my_bool changed, /* If changed since lock */ + global_changed, /* If changed since open */ + not_flushed, temporary, delay_key_write, concurrent_insert; + my_bool deleting; /* we are going to delete this table */ + THR_LOCK lock; + mysql_mutex_t intern_lock; /* Locking for use with _locking */ + mysql_rwlock_t *key_root_lock; + size_t mmaped_length; + uint nonmmaped_inserts; /* counter of writing in non-mmaped + area */ + mysql_rwlock_t mmap_lock; +} MYISAM_SHARE; + + +struct st_myisam_info +{ + MYISAM_SHARE *s; /* Shared between opens */ + MI_STATUS_INFO *state, save_state; + MI_BLOB *blobs; /* Pointer to blobs */ + MI_BIT_BUFF bit_buff; + /* accumulate indexfile changes between writes */ + TREE *bulk_insert; + DYNAMIC_ARRAY *ft1_to_ft2; /* used only in ft1->ft2 conversion */ + MEM_ROOT ft_memroot; /* used by the parser */ + MYSQL_FTPARSER_PARAM *ftparser_param; /* share info between init/deinit */ + void *external_ref; /* For MariaDB TABLE */ + LIST in_use; /* Thread using this table */ + char *filename; /* parameter to open filename */ + uchar *buff, /* Temp area for key */ + *lastkey,*lastkey2; /* Last used search key */ + uchar *first_mbr_key; /* Searhed spatial key */ + uchar *rec_buff; /* Tempbuff for recordpack */ + uchar *int_keypos, /* Save position for next/previous */ + *int_maxpos; /* -""- */ + uint int_nod_flag; /* -""- */ + uint32 int_keytree_version; /* -""- */ + int (*read_record)(struct st_myisam_info*, my_off_t, uchar*); + invalidator_by_filename invalidator; /* query cache invalidator */ + ulong this_unique; /* unique filenumber or thread */ + ulong last_unique; /* last unique number */ + ulong this_loop; /* counter for this open */ + ulong last_loop; /* last used counter */ + my_off_t lastpos, /* Last record position */ + nextpos; /* Position to next record */ + my_off_t save_lastpos; + my_off_t pos; /* Intern variable */ + my_off_t last_keypage; /* Last key page read */ + my_off_t last_search_keypage; /* Last keypage when searching */ + my_off_t dupp_key_pos; + ha_checksum checksum; /* Temp storage for row checksum */ + /* + QQ: the following two xxx_length fields should be removed, + as they are not compatible with parallel repair + */ + ulong packed_length, blob_length; /* Length of found, packed record */ + int dfile; /* The datafile */ + uint open_flag; /* Parameters for open */ + uint opt_flag; /* Optim. for space/speed */ + uint once_flags; /* For MYISAMMRG */ + uint update; /* If file changed since open */ + int lastinx; /* Last used index */ + uint lastkey_length; /* Length of key in lastkey */ + uint last_rkey_length; /* Last length in mi_rkey() */ + enum ha_rkey_function last_key_func; /* CONTAIN, OVERLAP, etc */ + uint save_lastkey_length; + uint pack_key_length; /* For MYISAMMRG */ + uint16 last_used_keyseg; /* For MyISAMMRG */ + int errkey; /* Got last error on this key */ + int lock_type; /* How database was locked */ + int tmp_lock_type; /* When locked by readinfo */ + uint data_changed; /* Somebody has changed data */ + uint save_update; /* When using KEY_READ */ + int save_lastinx; + LIST open_list; + IO_CACHE rec_cache; /* When cacheing records */ + uint preload_buff_size; /* When preloading indexes */ + myf lock_wait; /* is 0 or MY_SHORT_WAIT */ + my_bool was_locked; /* Was locked in panic */ + my_bool intern_lock_locked; /* locked in mi_extra() */ + my_bool append_insert_at_end; /* Set if concurrent insert */ + my_bool quick_mode; + /* If info->buff can't be used for rnext */ + my_bool page_changed; + /* If info->buff has to be reread for rnext */ + my_bool buff_used; + my_bool create_unique_index_by_sort; + index_cond_func_t index_cond_func; /* Index condition function */ + void *index_cond_func_arg; /* parameter for the func */ + rowid_filter_func_t rowid_filter_func; /* rowid filter check function */ + rowid_filter_is_active_func_t rowid_filter_is_active_func; /* is activefunction */ + void *rowid_filter_func_arg; /* parameter for the func */ + THR_LOCK_DATA lock; + uchar *rtree_recursion_state; /* For RTREE */ + int rtree_recursion_depth; +}; + +#define USE_WHOLE_KEY (HA_MAX_KEY_BUFF*2) /* Use whole key in _mi_search() */ +#define F_EXTRA_LCK -1 +/* bits in opt_flag */ +#define MEMMAP_USED 32U +#define REMEMBER_OLD_POS 64U + +#define WRITEINFO_UPDATE_KEYFILE 1U +#define WRITEINFO_NO_UNLOCK 2U + +/* once_flags */ +#define USE_PACKED_KEYS 1U +#define RRND_PRESERVE_LASTINX 2U + +/* bits in state.changed */ +#define STATE_CHANGED 1U +#define STATE_CRASHED 2U +#define STATE_CRASHED_ON_REPAIR 4U +#define STATE_NOT_ANALYZED 8U +#define STATE_NOT_OPTIMIZED_KEYS 16U +#define STATE_NOT_SORTED_PAGES 32U + +/* options to mi_read_cache */ +#define READING_NEXT 1U +#define READING_HEADER 2U + +#define mi_getint(x) ((uint) mi_uint2korr(x) & 32767) +#define mi_putint(x,y,nod) { uint16 boh=(nod ? (uint16) 32768 : 0) + (uint16) (y);\ + mi_int2store(x,boh); } +#define mi_test_if_nod(x) (x[0] & 128 ? info->s->base.key_reflength : 0) +#define mi_report_crashed(A, B) _mi_report_crashed((A), (B), __FILE__, __LINE__) +#define mi_mark_crashed(x) do{(x)->s->state.changed|= STATE_CRASHED; \ + DBUG_PRINT("error", ("Marked table crashed")); \ + mi_report_crashed((x), 0); \ + }while(0) +#define mi_mark_crashed_on_repair(x) do{(x)->s->state.changed|= \ + STATE_CRASHED|STATE_CRASHED_ON_REPAIR; \ + (x)->update|= HA_STATE_CHANGED; \ + DBUG_PRINT("error", \ + ("Marked table crashed")); \ + }while(0) +#define mi_is_crashed(x) ((x)->s->state.changed & STATE_CRASHED) +#define mi_is_crashed_on_repair(x) ((x)->s->state.changed & STATE_CRASHED_ON_REPAIR) +#define mi_print_error(SHARE, ERRNO) \ + mi_report_error((ERRNO), (SHARE)->index_file_name) + +/* Functions to store length of space packed keys, VARCHAR or BLOB keys */ + +#define store_key_length(key,length) \ +{ if ((length) < 255) \ + { *(key)=(length); } \ + else \ + { *(key)=255; mi_int2store((key)+1,(length)); } \ +} + +#define get_key_full_length(length,key) \ +{ if ((uchar) *(key) != 255) \ + length= ((uint) (uchar) *((key)++))+1; \ + else \ + { length=mi_uint2korr((key)+1)+3; (key)+=3; } \ +} + +#define get_key_full_length_rdonly(length,key) \ +{ if ((uchar) *(key) != 255) \ + length= ((uint) (uchar) *((key)))+1; \ + else \ + { length=mi_uint2korr((key)+1)+3; } \ +} + +#define get_pack_length(length) ((length) >= 255 ? 3 : 1) + +#define MI_MIN_BLOCK_LENGTH 20 /* Because of delete-link */ +#define MI_EXTEND_BLOCK_LENGTH 20 /* Don't use to small record-blocks */ +#define MI_SPLIT_LENGTH ((MI_EXTEND_BLOCK_LENGTH+4)*2) +#define MI_MAX_DYN_BLOCK_HEADER 20 /* Max prefix of record-block */ +#define MI_BLOCK_INFO_HEADER_LENGTH 20 +#define MI_DYN_DELETE_BLOCK_HEADER 20 /* length of delete-block-header */ +#define MI_DYN_MAX_BLOCK_LENGTH ((1UL << 24)-4UL) +#define MI_DYN_MAX_ROW_LENGTH (MI_DYN_MAX_BLOCK_LENGTH - MI_SPLIT_LENGTH) +#define MI_DYN_ALIGN_SIZE 4U /* Align blocks on this */ +#define MI_MAX_DYN_HEADER_BYTE 13 /* max header byte for dynamic rows */ +#define MI_MAX_BLOCK_LENGTH (((1U << 24)-1) & (~(MI_DYN_ALIGN_SIZE-1))) +#define MI_REC_BUFF_OFFSET ALIGN_SIZE(MI_DYN_DELETE_BLOCK_HEADER+sizeof(uint32)) + + +#define PACK_TYPE_SELECTED 1U /* Bits in field->pack_type */ +#define PACK_TYPE_SPACE_FIELDS 2U +#define PACK_TYPE_ZERO_FILL 4U +#define MI_FOUND_WRONG_KEY 0x7FFFFFFF /* Impossible value from ha_key_cmp */ + +#define MI_MAX_KEY_BLOCK_SIZE (MI_MAX_KEY_BLOCK_LENGTH/MI_MIN_KEY_BLOCK_LENGTH) +#define MI_BLOCK_SIZE(key_length,data_pointer,key_pointer,block_size) (((((key_length)+(data_pointer)+(key_pointer))*4+(key_pointer)+2)/(block_size)+1)*(block_size)) +#define MI_MAX_KEYPTR_SIZE 5 /* For calculating block lengths */ +#define MI_MIN_KEYBLOCK_LENGTH 50 /* When to split delete blocks */ + +#define MI_MIN_SIZE_BULK_INSERT_TREE 16384U /* this is per key */ +#define MI_MIN_ROWS_TO_USE_BULK_INSERT 100 +#define MI_MIN_ROWS_TO_DISABLE_INDEXES 100 +#define MI_MIN_ROWS_TO_USE_WRITE_CACHE 10 + +/* The UNIQUE check is done with a hashed long key */ + +#define MI_UNIQUE_HASH_TYPE HA_KEYTYPE_ULONG_INT +#define mi_unique_store(A,B) mi_int4store((A),(B)) + +extern mysql_mutex_t THR_LOCK_myisam; +#ifdef DONT_USE_RW_LOCKS +#define mysql_rwlock_wrlock(A) {} +#define mysql_rwlock_rdlock(A) {} +#define mysql_rwlock_unlock(A) {} +#endif + +/* Some extern variables */ + +extern LIST *myisam_open_list; +extern uchar myisam_file_magic[], myisam_pack_file_magic[]; +extern uint myisam_read_vec[], myisam_readnext_vec[]; +extern uint myisam_quick_table_bits; +extern File myisam_log_file; +extern ulong myisam_pid; +extern my_bool (*mi_killed)(MI_INFO *); +extern void _mi_report_crashed(MI_INFO *file, const char *message, + const char *sfile, uint sline); +/* This is used by _mi_calc_xxx_key_length och _mi_store_key */ + +typedef struct st_mi_s_param +{ + uint ref_length, key_length, + n_ref_length, + n_length, totlength, part_of_prev_key, prev_length, pack_marker; + uchar *key, *prev_key, *next_key_pos; + my_bool store_not_null; +} MI_KEY_PARAM; + +/* Prototypes for intern functions */ + +extern int _mi_read_dynamic_record(MI_INFO *info, my_off_t filepos, uchar *buf); +extern int _mi_write_dynamic_record(MI_INFO *, const uchar *); +extern int _mi_update_dynamic_record(MI_INFO *, my_off_t, const uchar *); +extern int _mi_delete_dynamic_record(MI_INFO *info); +extern int _mi_cmp_dynamic_record(MI_INFO *info, const uchar *record); +extern int _mi_read_rnd_dynamic_record(MI_INFO *, uchar *, my_off_t, my_bool); +extern int _mi_write_blob_record(MI_INFO *, const uchar *); +extern int _mi_update_blob_record(MI_INFO *, my_off_t, const uchar *); +extern int _mi_read_static_record(MI_INFO *info, my_off_t filepos, uchar *buf); +extern int _mi_write_static_record(MI_INFO *, const uchar *); +extern int _mi_update_static_record(MI_INFO *, my_off_t, const uchar *); +extern int _mi_delete_static_record(MI_INFO *info); +extern int _mi_cmp_static_record(MI_INFO *info, const uchar *record); +extern int _mi_read_rnd_static_record(MI_INFO *, uchar *, my_off_t, my_bool); +extern int _mi_ck_write(MI_INFO *info, uint keynr, uchar *key, uint length); +extern int _mi_ck_real_write_btree(MI_INFO *info, MI_KEYDEF *keyinfo, + uchar *key, uint key_length, + my_off_t *root, uint comp_flag); +extern int _mi_enlarge_root(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *key, + my_off_t *root); +extern int _mi_insert(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *key, + uchar *anc_buff, uchar *key_pos, uchar *key_buff, + uchar *father_buff, uchar *father_keypos, + my_off_t father_page, my_bool insert_last); +extern int _mi_split_page(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *key, + uchar *buff, uchar *key_buff, my_bool insert_last); +extern uchar *_mi_find_half_pos(uint nod_flag, MI_KEYDEF *keyinfo, + uchar *page, uchar *key, + uint *return_key_length, uchar ** after_key); +extern int _mi_calc_static_key_length(MI_KEYDEF *keyinfo, uint nod_flag, + uchar *key_pos, uchar *org_key, + uchar *key_buff, uchar *key, + MI_KEY_PARAM *s_temp); +extern int _mi_calc_var_key_length(MI_KEYDEF *keyinfo, uint nod_flag, + uchar *key_pos, uchar *org_key, + uchar *key_buff, uchar *key, + MI_KEY_PARAM *s_temp); +extern int _mi_calc_var_pack_key_length(MI_KEYDEF *keyinfo, uint nod_flag, + uchar *key_pos, uchar *org_key, + uchar *prev_key, uchar *key, + MI_KEY_PARAM *s_temp); +extern int _mi_calc_bin_pack_key_length(MI_KEYDEF *keyinfo, uint nod_flag, + uchar *key_pos, uchar *org_key, + uchar *prev_key, uchar *key, + MI_KEY_PARAM *s_temp); +void _mi_store_static_key(MI_KEYDEF *keyinfo, uchar *key_pos, + MI_KEY_PARAM *s_temp); +void _mi_store_var_pack_key(MI_KEYDEF *keyinfo, uchar *key_pos, + MI_KEY_PARAM *s_temp); +void _mi_store_bin_pack_key(MI_KEYDEF *keyinfo, uchar *key_pos, + MI_KEY_PARAM *s_temp); + +extern int _mi_ck_delete(MI_INFO *info, uint keynr, uchar *key, + uint key_length); +extern int _mi_readinfo(MI_INFO *info, int lock_flag, int check_keybuffer); +extern int _mi_writeinfo(MI_INFO *info, uint options); +extern int _mi_test_if_changed(MI_INFO *info); +extern int _mi_mark_file_changed(MI_INFO *info); +extern int _mi_decrement_open_count(MI_INFO *info); +void _mi_report_crashed_ignore(MI_INFO *file, const char *message, + const char *sfile, uint sline); +extern int _mi_check_index(MI_INFO *info, int inx); +extern int _mi_search(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *key, + uint key_len, uint nextflag, my_off_t pos); +extern int _mi_bin_search(struct st_myisam_info *info, MI_KEYDEF *keyinfo, + uchar *page, uchar *key, uint key_len, + uint comp_flag, uchar **ret_pos, uchar *buff, + my_bool *was_last_key); +extern int _mi_seq_search(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *page, + uchar *key, uint key_len, uint comp_flag, + uchar ** ret_pos, uchar *buff, + my_bool *was_last_key); +extern int _mi_prefix_search(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *page, + uchar *key, uint key_len, uint comp_flag, + uchar ** ret_pos, uchar *buff, + my_bool *was_last_key); +extern my_off_t _mi_kpos(uint nod_flag, uchar *after_key); +extern void _mi_kpointer(MI_INFO *info, uchar *buff, my_off_t pos); +extern my_off_t _mi_dpos(MI_INFO *info, uint nod_flag, uchar *after_key); +extern my_off_t _mi_rec_pos(MYISAM_SHARE *info, uchar *ptr); +extern void _mi_dpointer(MI_INFO *info, uchar *buff, my_off_t pos); +extern uint _mi_get_static_key(MI_KEYDEF *keyinfo, uint nod_flag, + uchar **page, uchar *key); +extern uint _mi_get_pack_key(MI_KEYDEF *keyinfo, uint nod_flag, uchar **page, + uchar *key); +extern uint _mi_get_binary_pack_key(MI_KEYDEF *keyinfo, uint nod_flag, + uchar ** page_pos, uchar *key); +extern uchar *_mi_get_last_key(MI_INFO *info, MI_KEYDEF *keyinfo, + uchar *keypos, uchar *lastkey, uchar *endpos, + uint *return_key_length); +extern uchar *_mi_get_key(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *page, + uchar *key, uchar *keypos, + uint *return_key_length); +extern uint _mi_keylength(MI_KEYDEF *keyinfo, uchar *key); +extern uint _mi_keylength_part(MI_KEYDEF *keyinfo, uchar *key, HA_KEYSEG *end); +extern uchar *_mi_move_key(MI_KEYDEF *keyinfo, uchar *to, uchar *from); +extern int _mi_search_next(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *key, + uint key_length, uint nextflag, my_off_t pos); +extern int _mi_search_first(MI_INFO *info, MI_KEYDEF *keyinfo, my_off_t pos); +extern int _mi_search_last(MI_INFO *info, MI_KEYDEF *keyinfo, my_off_t pos); +extern uchar *_mi_fetch_keypage(MI_INFO *info, MI_KEYDEF *keyinfo, + my_off_t page, int level, uchar *buff, + int return_buffer); +extern int _mi_write_keypage(MI_INFO *info, MI_KEYDEF *keyinfo, my_off_t page, + int level, uchar *buff); +extern int _mi_dispose(MI_INFO *info, MI_KEYDEF *keyinfo, my_off_t pos, + int level); +extern my_off_t _mi_new(MI_INFO *info, MI_KEYDEF *keyinfo, int level); +extern uint _mi_make_key(MI_INFO *info, uint keynr, uchar *key, + const uchar *record, my_off_t filepos); +extern uint _mi_pack_key(MI_INFO *info, uint keynr, uchar *key, + uchar *old, key_part_map keypart_map, + HA_KEYSEG ** last_used_keyseg); +extern int _mi_read_key_record(MI_INFO *info, my_off_t filepos, uchar *buf); +extern int _mi_read_cache(IO_CACHE *info, uchar *buff, my_off_t pos, + size_t length, int re_read_if_possibly); +extern ulonglong retrieve_auto_increment(MI_INFO *info, const uchar *record); + +extern uchar *mi_alloc_rec_buff(MI_INFO *, ulong, uchar **); +#define mi_get_rec_buff_ptr(info,buf) \ + ((((info)->s->options & HA_OPTION_PACK_RECORD) && (buf)) ? \ + (buf) - MI_REC_BUFF_OFFSET : (buf)) +#define mi_get_rec_buff_len(info,buf) \ + (*((uint32 *)(mi_get_rec_buff_ptr(info,buf)))) + +extern size_t _mi_rec_unpack(MI_INFO *info, uchar *to, uchar *from, + ulong reclength); +extern my_bool _mi_rec_check(MI_INFO *info,const uchar *record, uchar *packpos, + ulong packed_length, my_bool with_checkum); +extern int _mi_write_part_record(MI_INFO *info, my_off_t filepos, ulong length, + my_off_t next_filepos, uchar ** record, + ulong *reclength, int *flag); +extern void _mi_print_key(FILE *stream, HA_KEYSEG *keyseg, const uchar *key, + uint length); +extern my_bool _mi_read_pack_info(MI_INFO *info, pbool fix_keys); +extern int _mi_read_pack_record(MI_INFO *info, my_off_t filepos, uchar *buf); +extern int _mi_read_rnd_pack_record(MI_INFO *, uchar *, my_off_t, my_bool); +extern int _mi_pack_rec_unpack(MI_INFO *info, MI_BIT_BUFF *bit_buff, + uchar *to, uchar *from, ulong reclength); +extern ulonglong mi_safe_mul(ulonglong a, ulonglong b); +extern int _mi_ft_update(MI_INFO *info, uint keynr, uchar *keybuf, + const uchar *oldrec, const uchar *newrec, + my_off_t pos); +extern my_bool mi_yield_and_check_if_killed(MI_INFO *info, int inx); +extern my_bool mi_killed_standalone(MI_INFO *); + +struct st_sort_info; + + +typedef struct st_mi_block_info /* Parameter to _mi_get_block_info */ +{ + uchar header[MI_BLOCK_INFO_HEADER_LENGTH]; + ulong rec_len; + ulong data_len; + ulong block_len; + ulong blob_len; + my_off_t filepos; + my_off_t next_filepos; + my_off_t prev_filepos; + uint second_read; + uint offset; +} MI_BLOCK_INFO; + + +struct st_sort_key_blocks /* Used when sorting */ +{ + uchar *buff, *end_pos; + uchar lastkey[HA_MAX_POSSIBLE_KEY_BUFF]; + uint last_length; + int inited; +}; + + +struct st_sort_ftbuf +{ + uchar *buf, *end; + int count; + uchar lastkey[HA_MAX_KEY_BUFF]; +}; + +/* bits in return from _mi_get_block_info */ + +#define BLOCK_FIRST 1U +#define BLOCK_LAST 2U +#define BLOCK_DELETED 4U +#define BLOCK_ERROR 8U /* Wrong data */ +#define BLOCK_SYNC_ERROR 16U /* Right data at wrong place */ +#define BLOCK_FATAL_ERROR 32U /* hardware-error */ + +#define NEED_MEM ((uint) 10*4*(IO_SIZE+32)+32) /* Nead for recursion */ +#define MAXERR 20 +#define BUFFERS_WHEN_SORTING 16 /* Alloc for sort-key-tree */ +#define WRITE_COUNT MY_HOW_OFTEN_TO_WRITE +#define INDEX_TMP_EXT ".TMM" +#define DATA_TMP_EXT ".TMD" + +#define UPDATE_TIME 1U +#define UPDATE_STAT 2U +#define UPDATE_SORT 4U +#define UPDATE_AUTO_INC 8U +#define UPDATE_OPEN_COUNT 16U + +/* We use MY_ALIGN_DOWN here mainly to ensure that we get stable values for mysqld --help ) */ +#define KEY_BUFFER_INIT MY_ALIGN_DOWN(1024L*1024L-MALLOC_OVERHEAD, IO_SIZE) +#define READ_BUFFER_INIT MY_ALIGN_DOWN(1024L*256L-MALLOC_OVERHEAD, 1024) +#define SORT_BUFFER_INIT MY_ALIGN_DOWN(1024L*1024L*128L-MALLOC_OVERHEAD, 1024) +#define MIN_SORT_BUFFER 4096U + +enum myisam_log_commands +{ + MI_LOG_OPEN, MI_LOG_WRITE, MI_LOG_UPDATE, MI_LOG_DELETE, MI_LOG_CLOSE, + MI_LOG_EXTRA, MI_LOG_LOCK, MI_LOG_DELETE_ALL +}; + +#define myisam_log(a,b,c,d) if (myisam_log_file >= 0) _myisam_log(a,b,c,d) +#define myisam_log_command(a,b,c,d,e) if (myisam_log_file >= 0) _myisam_log_command(a,b,c,d,e) +#define myisam_log_record(a,b,c,d,e) if (myisam_log_file >= 0) _myisam_log_record(a,b,c,d,e) + +#define fast_mi_writeinfo(INFO) if (!(INFO)->s->tot_locks) (void) _mi_writeinfo((INFO),0) +#define fast_mi_readinfo(INFO) ((INFO)->lock_type == F_UNLCK) && _mi_readinfo((INFO),F_RDLCK,1) + +extern uint _mi_get_block_info(MI_BLOCK_INFO *, File, my_off_t); +extern uint _mi_rec_pack(MI_INFO *info, uchar *to, const uchar *from); +extern uint _mi_pack_get_block_info(MI_INFO *myisam, MI_BIT_BUFF *bit_buff, + MI_BLOCK_INFO *info, uchar **rec_buff_p, + File file, my_off_t filepos); +extern void _mi_store_blob_length(uchar *pos, uint pack_length, uint length); +extern void _myisam_log(enum myisam_log_commands command, MI_INFO *info, + const uchar *buffert, uint length); +extern void _myisam_log_command(enum myisam_log_commands command, + MI_INFO *info, const uchar *buffert, + uint length, int result); +extern void _myisam_log_record(enum myisam_log_commands command, MI_INFO *info, + const uchar *record, my_off_t filepos, + int result); +extern void mi_report_error(int errcode, const char *file_name); +extern my_bool _mi_memmap_file(MI_INFO *info); +extern void _mi_unmap_file(MI_INFO *info); +extern uint save_pack_length(uint version, uchar *block_buff, ulong length); +extern uint calc_pack_length(uint version, ulong length); +extern size_t mi_mmap_pread(MI_INFO *info, uchar *Buffer, + size_t Count, my_off_t offset, myf MyFlags); +extern size_t mi_mmap_pwrite(MI_INFO *info, const uchar *Buffer, + size_t Count, my_off_t offset, myf MyFlags); +extern size_t mi_nommap_pread(MI_INFO *info, uchar *Buffer, + size_t Count, my_off_t offset, myf MyFlags); +extern size_t mi_nommap_pwrite(MI_INFO *info, const uchar *Buffer, + size_t Count, my_off_t offset, myf MyFlags); + +uint mi_state_info_write(File file, MI_STATE_INFO *state, uint pWrite); +uchar *mi_state_info_read(uchar *ptr, MI_STATE_INFO *state); +uint mi_state_info_read_dsk(File file, MI_STATE_INFO *state, my_bool pRead); +uint mi_base_info_write(File file, MI_BASE_INFO *base); +uchar *mi_n_base_info_read(uchar *ptr, MI_BASE_INFO *base); +int mi_keyseg_write(File file, const HA_KEYSEG *keyseg); +uchar *mi_keyseg_read(uchar *ptr, HA_KEYSEG *keyseg); +uint mi_keydef_write(File file, MI_KEYDEF *keydef); +uchar *mi_keydef_read(uchar *ptr, MI_KEYDEF *keydef); +uint mi_uniquedef_write(File file, MI_UNIQUEDEF *keydef); +uchar *mi_uniquedef_read(uchar *ptr, MI_UNIQUEDEF *keydef); +uint mi_recinfo_write(File file, MI_COLUMNDEF *recinfo); +uchar *mi_recinfo_read(uchar *ptr, MI_COLUMNDEF *recinfo); +extern int mi_disable_indexes(MI_INFO *info); +extern int mi_enable_indexes(MI_INFO *info); +extern int mi_indexes_are_disabled(MI_INFO *info); +ulong _mi_calc_total_blob_length(MI_INFO *info, const uchar *record); +ha_checksum mi_checksum(MI_INFO *info, const uchar *buf); +ha_checksum mi_static_checksum(MI_INFO *info, const uchar *buf); +my_bool mi_check_unique(MI_INFO *info, MI_UNIQUEDEF *def, const uchar *record, + ha_checksum unique_hash, my_off_t pos); +ha_checksum mi_unique_hash(MI_UNIQUEDEF *def, const uchar *buf); +int _mi_cmp_static_unique(MI_INFO *info, MI_UNIQUEDEF *def, + const uchar *record, my_off_t pos); +int _mi_cmp_dynamic_unique(MI_INFO *info, MI_UNIQUEDEF *def, + const uchar *record, my_off_t pos); +int mi_unique_comp(MI_UNIQUEDEF *def, const uchar *a, const uchar *b, + my_bool null_are_equal); +my_bool mi_get_status(void *param, my_bool concurrent_insert); +void mi_update_status(void *param); +void mi_restore_status(void *param); +void mi_copy_status(void *to, void *from); +my_bool mi_check_status(void *param); +void mi_fix_status(MI_INFO *org_table, MI_INFO *new_table); +extern MI_INFO *test_if_reopen(char *filename); +my_bool check_table_is_closed(const char *name, const char *where); +int mi_open_datafile(MI_INFO *info, MYISAM_SHARE *share); + +int mi_open_keyfile(MYISAM_SHARE *share); +void mi_setup_functions(MYISAM_SHARE *share); +my_bool mi_dynmap_file(MI_INFO *info, my_off_t size); +int mi_munmap_file(MI_INFO *info); +void mi_remap_file(MI_INFO *info, my_off_t size); + +check_result_t mi_check_index_tuple(MI_INFO *info, uint keynr, uchar *record); + + /* Functions needed by mi_check */ +int killed_ptr(HA_CHECK *param); +void mi_check_print_error(HA_CHECK *param, const char *fmt, ...); +void mi_check_print_warning(HA_CHECK *param, const char *fmt, ...); +void mi_check_print_info(HA_CHECK *param, const char *fmt, ...); +pthread_handler_t thr_find_all_keys(void *arg); +extern void mi_set_index_cond_func(MI_INFO *info, index_cond_func_t check_func, + void *func_arg); +extern void mi_set_rowid_filter_func(MI_INFO *info, + rowid_filter_func_t check_func, + rowid_filter_is_active_func_t is_active_func, + void *func_arg); +int flush_blocks(HA_CHECK *param, KEY_CACHE *key_cache, File file, + ulonglong *dirty_part_map); + +#ifdef HAVE_PSI_INTERFACE +extern PSI_mutex_key mi_key_mutex_MYISAM_SHARE_intern_lock, + mi_key_mutex_MI_SORT_INFO_mutex, mi_key_mutex_MI_CHECK_print_msg; + +extern PSI_rwlock_key mi_key_rwlock_MYISAM_SHARE_key_root_lock, + mi_key_rwlock_MYISAM_SHARE_mmap_lock; + +extern PSI_cond_key mi_key_cond_MI_SORT_INFO_cond; + +extern PSI_file_key mi_key_file_datatmp, mi_key_file_dfile, mi_key_file_kfile, + mi_key_file_log; + +extern PSI_thread_key mi_key_thread_find_all_keys; + +void init_myisam_psi_keys(); +#else +#define init_myisam_psi_keys() do { } while(0) +#endif /* HAVE_PSI_INTERFACE */ + +extern PSI_memory_key mi_key_memory_MYISAM_SHARE; +extern PSI_memory_key mi_key_memory_MI_INFO; +extern PSI_memory_key mi_key_memory_MI_INFO_ft1_to_ft2; +extern PSI_memory_key mi_key_memory_MI_INFO_bulk_insert; +extern PSI_memory_key mi_key_memory_record_buffer; +extern PSI_memory_key mi_key_memory_FTB; +extern PSI_memory_key mi_key_memory_FT_INFO; +extern PSI_memory_key mi_key_memory_FTPARSER_PARAM; +extern PSI_memory_key mi_key_memory_ft_memroot; +extern PSI_memory_key mi_key_memory_ft_stopwords; +extern PSI_memory_key mi_key_memory_MI_SORT_PARAM; +extern PSI_memory_key mi_key_memory_MI_SORT_PARAM_wordroot; +extern PSI_memory_key mi_key_memory_SORT_FT_BUF; +extern PSI_memory_key mi_key_memory_SORT_KEY_BLOCKS; +extern PSI_memory_key mi_key_memory_filecopy; +extern PSI_memory_key mi_key_memory_SORT_INFO_buffer; +extern PSI_memory_key mi_key_memory_MI_DECODE_TREE; +extern PSI_memory_key mi_key_memory_MYISAM_SHARE_decode_tables; +extern PSI_memory_key mi_key_memory_preload_buffer; +extern PSI_memory_key mi_key_memory_stPageList_pages; +extern PSI_memory_key mi_key_memory_keycache_thread_var; + +C_MODE_END |