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/* Copyright (C) 2000-2006 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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* Mostly constants and some macros/functions used by the server
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#ifndef DRIZZLE_SERVER_DEFINITIONS_H
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#define DRIZZLE_SERVER_DEFINITIONS_H
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#define NO_ALARM_LOOP /* lib5 and popen can't use alarm */
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/* These paths are converted to other systems (WIN95) before use */
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#define LANGUAGE "english/"
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#define ERRMSG_FILE "errmsg.sys"
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#define TEMP_PREFIX "MY"
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#define LOG_PREFIX "ML"
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#define PROGDIR "bin/"
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#define DATADIR "data/"
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#define SHAREDIR "share/"
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#define PLUGINDIR "lib/plugin"
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#define ER(X) _(drizzled_error_messages[(X) - ER_ERROR_FIRST])
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#define ER_SAFE(X) (((X) >= ER_ERROR_FIRST && (X) <= ER_ERROR_LAST) ? ER(X) : _("Invalid error code"))
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#define ERRMAPP 1 /* Errormap f|r my_error */
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#define LIBLEN FN_REFLEN-FN_LEN /* Max l{ngd p} dev */
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/* extra 4+4 bytes for slave tmp tables */
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#define MAX_DBKEY_LENGTH (NAME_LEN*2+1+1+4+4)
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#define MAX_ALIAS_NAME 256
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#define MAX_FIELD_NAME 34 /* Max colum name length +2 */
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#define MAX_SYS_VAR_LENGTH 32
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#define MAX_KEY MAX_INDEXES /* Max used keys */
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#define MAX_REF_PARTS 16 /* Max parts used as ref */
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#define MAX_KEY_LENGTH 4096 /* max possible key */
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#define MAX_KEY_LENGTH_DECIMAL_WIDTH 4 /* strlen("4096") */
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#define MAX_REFLENGTH 8 /* Max length for record ref */
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#define MAX_REFLENGTH 4 /* Max length for record ref */
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#define MAX_HOSTNAME 61 /* len+1 in mysql.user */
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#define MAX_MBWIDTH 4 /* Max multibyte sequence */
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#define MAX_FIELD_CHARLENGTH 255
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#define MAX_FIELD_VARCHARLENGTH 65535
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#define CONVERT_IF_BIGGER_TO_BLOB 512 /* Used for CREATE ... SELECT */
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/* Max column width +1 */
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#define MAX_FIELD_WIDTH (MAX_FIELD_CHARLENGTH*MAX_MBWIDTH+1)
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#define MAX_BIT_FIELD_LENGTH 64 /* Max length in bits for bit fields */
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#define MAX_DATE_WIDTH 10 /* YYYY-MM-DD */
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#define MAX_TIME_WIDTH 23 /* -DDDDDD HH:MM:SS.###### */
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#define MAX_DATETIME_FULL_WIDTH 29 /* YYYY-MM-DD HH:MM:SS.###### AM */
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#define MAX_DATETIME_WIDTH 19 /* YYYY-MM-DD HH:MM:SS */
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#define MAX_DATETIME_COMPRESSED_WIDTH 14 /* YYYYMMDDHHMMSS */
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#define MAX_TABLES (sizeof(table_map)*8-3) /* Max tables in join */
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#define PARAM_TABLE_BIT (((table_map) 1) << (sizeof(table_map)*8-3))
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#define OUTER_REF_TABLE_BIT (((table_map) 1) << (sizeof(table_map)*8-2))
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#define RAND_TABLE_BIT (((table_map) 1) << (sizeof(table_map)*8-1))
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#define PSEUDO_TABLE_BITS (PARAM_TABLE_BIT | OUTER_REF_TABLE_BIT | \
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#define MAX_FIELDS 4096 /* Limit in the .frm file */
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#define MAX_SELECT_NESTING (sizeof(nesting_map)*8-1)
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#define MAX_SORT_MEMORY (2048*1024-MALLOC_OVERHEAD)
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#define MIN_SORT_MEMORY (32*1024-MALLOC_OVERHEAD)
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/* Memory allocated when parsing a statement / saving a statement */
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#define MEM_ROOT_BLOCK_SIZE 8192
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#define MEM_ROOT_PREALLOC 8192
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#define TRANS_MEM_ROOT_BLOCK_SIZE 4096
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#define TRANS_MEM_ROOT_PREALLOC 4096
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#define DEFAULT_ERROR_COUNT 64
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#define EXTRA_RECORDS 10 /* Extra records in sort */
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#define SCROLL_EXTRA 5 /* Extra scroll-rows. */
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#define FIELD_NAME_USED ((uint) 32768) /* Bit set if fieldname used */
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#define FORM_NAME_USED ((uint) 16384) /* Bit set if formname used */
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#define FIELD_NR_MASK 16383 /* To get fieldnumber */
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#define FERR -1 /* Error from my_functions */
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#define CREATE_MODE 0 /* Default mode on new files */
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#define NAMES_SEP_CHAR '\377' /* Char to sep. names */
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#define READ_RECORD_BUFFER (uint) (IO_SIZE*8) /* Pointer_buffer_size */
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#define DISK_BUFFER_SIZE (uint) (IO_SIZE*16) /* Size of diskbuffer */
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#define ME_INFO (ME_HOLDTANG+ME_OLDWIN+ME_NOREFRESH)
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#define ME_ERROR (ME_BELL+ME_OLDWIN+ME_NOREFRESH)
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#define MYF_RW MYF(MY_WME+MY_NABP) /* Vid my_read & my_write */
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#define SPECIAL_USE_LOCKS 1 /* Lock used databases */
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#define SPECIAL_NO_NEW_FUNC 2 /* Skip new functions */
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#define SPECIAL_SKIP_SHOW_DB 4 /* Don't allow 'show db' */
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#define SPECIAL_WAIT_IF_LOCKED 8 /* Wait if locked database */
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#define SPECIAL_SAME_DB_NAME 16 /* form name = file name */
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#define SPECIAL_ENGLISH 32 /* English error messages */
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#define SPECIAL_NO_RESOLVE 64 /* Don't use gethostname */
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#define SPECIAL_NO_PRIOR 128 /* Don't prioritize threads */
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#define SPECIAL_BIG_SELECTS 256 /* Don't use heap tables */
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#define SPECIAL_NO_HOST_CACHE 512 /* Don't cache hosts */
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#define SPECIAL_SHORT_LOG_FORMAT 1024
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#define SPECIAL_SAFE_MODE 2048
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#define SPECIAL_LOG_QUERIES_NOT_USING_INDEXES 4096 /* Obsolete */
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#define store_record(A,B) memcpy((A)->B,(A)->record[0],(size_t) (A)->s->reclength)
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#define restore_record(A,B) memcpy((A)->record[0],(A)->B,(size_t) (A)->s->reclength)
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#define cmp_record(A,B) memcmp((A)->record[0],(A)->B,(size_t) (A)->s->reclength)
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#define empty_record(A) \
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restore_record((A),s->default_values); \
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memset((A)->null_flags, 255, (A)->s->null_bytes); \
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/* Defines for use with openfrm, openprt and openfrd */
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#define READ_ALL 1 /* openfrm: Read all parameters */
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#define CHANGE_FRM 2 /* openfrm: open .frm as O_RDWR */
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#define READ_KEYINFO 4 /* L{s nyckeldata fr}n filen */
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#define EXTRA_RECORD 8 /* Reservera plats f|r extra record */
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#define DONT_OPEN_TABLES 8 /* Don't open database-files (frd) */
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#define DONT_OPEN_MASTER_REG 16 /* Don't open first reg-file (prt) */
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#define EXTRA_LONG_RECORD 16 /* Plats f|r dubbel s|k-record */
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#define COMPUTE_TYPES 32 /* Kontrollera type f|r f{ltena */
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#define SEARCH_PRG 64 /* S|k efter registret i 'prg_dev' */
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#define READ_USED_NAMES 128 /* L{s anv{nda formul{rnamn */
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#define DONT_GIVE_ERROR 256 /* Don't do frm_error on openfrm */
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#define READ_SCREENS 1024 /* Read screens, info and helpfile */
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#define DELAYED_OPEN 4096 /* Open table later */
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#define OPEN_VIEW 8192 /* Allow open on view */
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#define OPEN_VIEW_NO_PARSE 16384 /* Open frm only if it's a view,
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but do not parse view itself */
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This flag is used in function get_all_tables() which fills
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I_S tables with data which are retrieved from frm files and storage engine
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The flag means that we need to open FRM file only to get necessary data.
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#define OPEN_FRM_FILE_ONLY 32768
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This flag is used in function get_all_tables() which fills
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I_S tables with data which are retrieved from frm files and storage engine
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The flag means that we need to process tables only to get necessary data.
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Views are not processed.
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#define OPEN_TABLE_ONLY OPEN_FRM_FILE_ONLY*2
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This flag is used in function get_all_tables() which fills
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I_S tables with data which are retrieved from frm files and storage engine
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The flag means that we need to process views only to get necessary data.
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Tables are not processed.
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#define OPEN_VIEW_ONLY OPEN_TABLE_ONLY*2
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This flag is used in function get_all_tables() which fills
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I_S tables with data which are retrieved from frm files and storage engine.
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The flag means that we need to open a view using
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open_normal_and_derived_tables() function.
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#define OPEN_VIEW_FULL OPEN_VIEW_ONLY*2
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This flag is used in function get_all_tables() which fills
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I_S tables with data which are retrieved from frm files and storage engine.
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The flag means that I_S table uses optimization algorithm.
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#define OPTIMIZE_I_S_TABLE OPEN_VIEW_FULL*2
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#define SC_INFO_LENGTH 4 /* Form format constant */
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#define TE_INFO_LENGTH 3
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#define MTYP_NOEMPTY_BIT 128
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#define FRM_VER_TRUE_VARCHAR (FRM_VER+4) /* 10 */
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#define MYSQL_VERSION_TABLESPACE_IN_FRM_CGE 50120
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#define MYSQL_VERSION_TABLESPACE_IN_FRM 50205
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#define MYSQL_VERSION_TABLESPACE_IN_FRM_STR "50205"
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Minimum length pattern before Turbo Boyer-Moore is used
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for SELECT "text" LIKE "%pattern%", excluding the two
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wildcards in class Item_func_like.
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#define MIN_TURBOBM_PATTERN_LEN 3
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Defines for binary logging.
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Do not decrease the value of BIN_LOG_HEADER_SIZE.
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Do not even increase it before checking code.
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#define BIN_LOG_HEADER_SIZE 4
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#define DEFAULT_KEY_CACHE_NAME "default"
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#define STORAGE_TYPE_MASK 7
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#define COLUMN_FORMAT_MASK 7
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#define COLUMN_FORMAT_SHIFT 3
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/* Below are #defines that used to be in mysql_priv.h */
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/***************************************************************************
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Configuration parameters
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****************************************************************************/
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#define ACL_CACHE_SIZE 256
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#define MAX_PASSWORD_LENGTH 32
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#define HOST_CACHE_SIZE 128
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#define MAX_ACCEPT_RETRY 10 // Test accept this many times
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#define MAX_FIELDS_BEFORE_HASH 32
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#define USER_VARS_HASH_SIZE 16
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#define TABLE_OPEN_CACHE_MIN 64
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#define TABLE_OPEN_CACHE_DEFAULT 64
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Value of 9236 discovered through binary search 2006-09-26 on Ubuntu Dapper
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Drake, libc6 2.3.6-0ubuntu2, Linux kernel 2.6.15-27-686, on x86. (Added
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100 bytes as reasonable buffer against growth and other environments'
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Feel free to raise this by the smallest amount you can to get the
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"execution_constants" test to pass.
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#define STACK_MIN_SIZE 12000 ///< Abort if less stack during eval.
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#define STACK_MIN_SIZE_FOR_OPEN 1024*80
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#define STACK_BUFF_ALLOC 352 ///< For stack overrun checks
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* @TODO Move into a drizzled.h since it's only used in drizzled.cc
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* @TODO Rename to DRIZZLED_NET_RETRY_COUNT
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#ifndef MYSQLD_NET_RETRY_COUNT
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#define MYSQLD_NET_RETRY_COUNT 10 ///< Abort read after this many int.
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#define TEMP_POOL_SIZE 128
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#define QUERY_ALLOC_BLOCK_SIZE 8192
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#define QUERY_ALLOC_PREALLOC_SIZE 8192
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#define TRANS_ALLOC_BLOCK_SIZE 4096
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#define TRANS_ALLOC_PREALLOC_SIZE 4096
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#define RANGE_ALLOC_BLOCK_SIZE 4096
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#define ACL_ALLOC_BLOCK_SIZE 1024
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#define UDF_ALLOC_BLOCK_SIZE 1024
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#define TABLE_ALLOC_BLOCK_SIZE 1024
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#define BDB_LOG_ALLOC_BLOCK_SIZE 1024
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#define WARN_ALLOC_BLOCK_SIZE 2048
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#define WARN_ALLOC_PREALLOC_SIZE 1024
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#define PROFILE_ALLOC_BLOCK_SIZE 2048
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#define PROFILE_ALLOC_PREALLOC_SIZE 1024
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The following parameters is to decide when to use an extra cache to
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optimise seeks when reading a big table in sorted order
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#define MIN_FILE_LENGTH_TO_USE_ROW_CACHE (10L*1024*1024)
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#define MIN_ROWS_TO_USE_TABLE_CACHE 100
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#define MIN_ROWS_TO_USE_BULK_INSERT 100
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The following is used to decide if MySQL should use table scanning
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instead of reading with keys. The number says how many evaluation of the
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WHERE clause is comparable to reading one extra row from a table.
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#define TIME_FOR_COMPARE 5 // 5 compares == one read
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Number of comparisons of table rowids equivalent to reading one row from a
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#define TIME_FOR_COMPARE_ROWID (TIME_FOR_COMPARE*2)
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For sequential disk seeks the cost formula is:
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DISK_SEEK_BASE_COST + DISK_SEEK_PROP_COST * #blocks_to_skip
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The cost of average seek
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DISK_SEEK_BASE_COST + DISK_SEEK_PROP_COST*BLOCKS_IN_AVG_SEEK =1.0.
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#define DISK_SEEK_BASE_COST ((double)0.9)
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#define BLOCKS_IN_AVG_SEEK 128
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#define DISK_SEEK_PROP_COST ((double)0.1/BLOCKS_IN_AVG_SEEK)
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Number of rows in a reference table when refereed through a not unique key.
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This value is only used when we don't know anything about the key
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#define MATCHING_ROWS_IN_OTHER_TABLE 10
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/** Don't pack string keys shorter than this (if PACK_KEYS=1 isn't used). */
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#define KEY_DEFAULT_PACK_LENGTH 8
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/** Characters shown for the command in 'show processlist'. */
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#define PROCESS_LIST_WIDTH 100
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/* Characters shown for the command in 'information_schema.processlist' */
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#define PROCESS_LIST_INFO_WIDTH 65535
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#define PRECISION_FOR_DOUBLE 53
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#define PRECISION_FOR_FLOAT 24
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Default time to wait before aborting a new client connection
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that does not respond to "initial server greeting" timely
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#define CONNECT_TIMEOUT 10
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/* The following can also be changed from the command line */
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#define DEFAULT_CONCURRENCY 10
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#define FLUSH_TIME 0 /**< Don't flush tables */
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#define MAX_CONNECT_ERRORS 10 ///< errors before disabling host
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#define INTERRUPT_PRIOR 10
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#define CONNECT_PRIOR 9
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#define QUERY_PRIOR 6
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/* Bits from testflag */
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#define TEST_PRINT_CACHED_TABLES 1
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#define TEST_NO_KEY_GROUP 2
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#define TEST_MIT_THREAD 4
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#define TEST_BLOCKING 8
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#define TEST_KEEP_TMP_TABLES 16
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#define TEST_READCHECK 64 /**< Force use of readcheck */
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#define TEST_NO_EXTRA 128
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#define TEST_CORE_ON_SIGNAL 256 /**< Give core if signal */
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#define TEST_NO_STACKTRACE 512
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#define TEST_SIGINT 1024 /**< Allow sigint on threads */
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#define TEST_SYNCHRONIZATION 2048 /**< get server to do sleep in some places */
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#endif /* End ifndef MYSQL_CLIENT */
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/* The rest of the file is included in the server only */
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/* Bits for different SQL modes modes (including ANSI mode) */
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#define MODE_REAL_AS_FLOAT 1
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#define MODE_PIPES_AS_CONCAT 2
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#define MODE_ANSI_QUOTES 4
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#define MODE_IGNORE_SPACE 8
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#define MODE_NOT_USED 16
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#define MODE_ONLY_FULL_GROUP_BY 32
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#define MODE_NO_UNSIGNED_SUBTRACTION 64
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#define MODE_NO_DIR_IN_CREATE 128
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#define MODE_POSTGRESQL 256
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#define MODE_ORACLE 512
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#define MODE_MSSQL 1024
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#define MODE_DB2 2048
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#define MODE_MAXDB 4096
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#define MODE_NO_KEY_OPTIONS 8192
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#define MODE_NO_TABLE_OPTIONS 16384
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#define MODE_NO_FIELD_OPTIONS 32768
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#define MODE_MYSQL323 65536L
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#define MODE_MYSQL40 (MODE_MYSQL323*2)
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#define MODE_ANSI (MODE_MYSQL40*2)
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#define MODE_NO_AUTO_VALUE_ON_ZERO (MODE_ANSI*2)
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#define MODE_NO_BACKSLASH_ESCAPES (MODE_NO_AUTO_VALUE_ON_ZERO*2)
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#define MODE_STRICT_TRANS_TABLES (MODE_NO_BACKSLASH_ESCAPES*2)
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#define MODE_STRICT_ALL_TABLES (MODE_STRICT_TRANS_TABLES*2)
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#define MODE_NO_ZERO_IN_DATE (MODE_STRICT_ALL_TABLES*2)
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#define MODE_NO_ZERO_DATE (MODE_NO_ZERO_IN_DATE*2)
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#define MODE_INVALID_DATES (MODE_NO_ZERO_DATE*2)
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#define MODE_ERROR_FOR_DIVISION_BY_ZERO (MODE_INVALID_DATES*2)
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#define MODE_TRADITIONAL (MODE_ERROR_FOR_DIVISION_BY_ZERO*2)
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#define MODE_NO_AUTO_CREATE_USER (MODE_TRADITIONAL*2)
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#define MODE_HIGH_NOT_PRECEDENCE (MODE_NO_AUTO_CREATE_USER*2)
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#define MODE_NO_ENGINE_SUBSTITUTION (MODE_HIGH_NOT_PRECEDENCE*2)
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#define MODE_PAD_CHAR_TO_FULL_LENGTH (1ULL << 31)
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/* @@optimizer_switch flags */
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#define OPTIMIZER_SWITCH_NO_MATERIALIZATION 1
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#define OPTIMIZER_SWITCH_NO_SEMIJOIN 2
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Replication uses 8 bytes to store SQL_MODE in the binary log. The day you
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use strictly more than 64 bits by adding one more define above, you should
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contact the replication team because the replication code should then be
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updated (to store more bytes on disk).
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NOTE: When adding new SQL_MODE types, make sure to also add them to
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the scripts used for creating the MySQL system tables
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in scripts/mysql_system_tables.sql and scripts/mysql_system_tables_fix.sql
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#define RAID_BLOCK_SIZE 1024
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#define MY_CHARSET_BIN_MB_MAXLEN 1
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#define UNCACHEABLE_DEPENDENT 1
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#define UNCACHEABLE_RAND 2
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#define UNCACHEABLE_SIDEEFFECT 4
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/// forcing to save JOIN for explain
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#define UNCACHEABLE_EXPLAIN 8
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/** Don't evaluate subqueries in prepare even if they're not correlated */
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#define UNCACHEABLE_PREPARE 16
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/* For uncorrelated SELECT in an UNION with some correlated SELECTs */
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#define UNCACHEABLE_UNITED 32
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/* Used to check GROUP BY list in the MODE_ONLY_FULL_GROUP_BY mode */
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#define UNDEF_POS (-1)
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/* BINLOG_DUMP options */
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#define BINLOG_DUMP_NON_BLOCK 1
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/* sql_show.cc:show_log_files() */
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#define SHOW_LOG_STATUS_FREE "FREE"
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#define SHOW_LOG_STATUS_INUSE "IN USE"
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/* Options to add_table_to_list() */
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#define TL_OPTION_UPDATING 1
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#define TL_OPTION_FORCE_INDEX 2
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#define TL_OPTION_IGNORE_LEAVES 4
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#define TL_OPTION_ALIAS 8
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/* Some portable defines */
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#define portable_sizeof_char_ptr 8
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#define tmp_file_prefix "#sql" /**< Prefix for tmp tables */
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#define tmp_file_prefix_length 4
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/* Flags for calc_week() function. */
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#define WEEK_MONDAY_FIRST 1
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#define WEEK_FIRST_WEEKDAY 4
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#define STRING_BUFFER_USUAL_SIZE 80
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Some defines for exit codes for ::is_equal class functions.
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#define IS_EQUAL_NO 0
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#define IS_EQUAL_YES 1
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#define IS_EQUAL_PACK_LENGTH 2
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#endif /* DRIZZLE_SERVER_DEFINITIONS_H */
added
removed
drizzled/definitions.h
