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-rw-r--r--storage/myisam/myisamdef.h803
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diff --git a/storage/myisam/myisamdef.h b/storage/myisam/myisamdef.h
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+/*
+ Copyright (c) 2000, 2012, Oracle and/or its affiliates.
+ Copyright (c) 2017, 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;
+
+
+typedef struct st_sort_key_blocks /* Used when sorting */
+{
+ uchar *buff, *end_pos;
+ uchar lastkey[HA_MAX_POSSIBLE_KEY_BUFF];
+ uint last_length;
+ int inited;
+} SORT_KEY_BLOCKS;
+
+
+typedef struct st_sort_ftbuf
+{
+ uchar *buf, *end;
+ int count;
+ uchar lastkey[HA_MAX_KEY_BUFF];
+} SORT_FT_BUF;
+
+/* 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