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/* Copyright (c) Monty Program Ab; 1991-2011
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; version 2
of the License.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA */
#ifndef _my_handler_h
#define _my_handler_h
/*
There is a hard limit for the maximum number of keys as there are only
8 bits in the index file header for the number of keys in a table.
This means that 0..255 keys can exist for a table. The idea of
HA_MAX_POSSIBLE_KEY is to ensure that one can use myisamchk & tools on
a MyISAM table for which one has more keys than MyISAM is normally
compiled for. If you don't have this, you will get a core dump when
running myisamchk compiled for 128 keys on a table with 255 keys.
*/
#define HA_MAX_POSSIBLE_KEY 255 /* For myisamchk */
/*
The following defines can be increased if necessary.
But beware the dependency of HA_MAX_POSSIBLE_KEY_BUFF and HA_MAX_KEY_LENGTH.
*/
#define HA_MAX_KEY_LENGTH 1000 /* Max length in bytes */
#define HA_MAX_KEY_SEG 32 /* Max segments for key */
#define HA_MAX_POSSIBLE_KEY_BUFF (HA_MAX_KEY_LENGTH + 24+ 6+6)
#define HA_MAX_KEY_BUFF (HA_MAX_KEY_LENGTH+HA_MAX_KEY_SEG*6+8+8)
#define HA_MAX_MSG_BUF 1024 /* used in CHECK TABLE, REPAIR TABLE */
/*
Inside an in-memory data record, memory pointers to pieces of the
record (like BLOBs) are stored in their native byte order and in
this amount of bytes.
*/
#define portable_sizeof_char_ptr 8
/* Register / unregister errors for my_error() */
extern void my_handler_error_register(void);
extern void my_handler_error_unregister(void);
#endif /* _my_handler_h */
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