1 /* Copyright (c) 2000, 2002-2004, 2007, 2008 MySQL AB
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; version 2 of the License.
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 GNU General Public License for more details.
12 You should have received a copy of the GNU General Public License
13 along with this program; if not, write to the Free Software
14 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
17 Static variables for mysys library. All definied here for easy making of
24 #define MAX_SIGNALS 10 /* Max signals under a dont-allow */
25 #define MIN_KEYBLOCK (min(IO_SIZE,1024))
26 #define MAX_KEYBLOCK 8192 /* Max keyblocklength == 8*IO_SIZE */
27 #define MAX_BLOCK_TYPES MAX_KEYBLOCK/MIN_KEYBLOCK
31 sig_handler (*func
)(int number
);
35 Structure that stores information of a allocated memory block
36 The data is at &struct_adr+sizeof(ALIGN_SIZE(sizeof(struct irem)))
37 The lspecialvalue is at the previous 4 bytes from this, which may not
38 necessarily be in the struct if the struct size isn't aligned at a 8 byte
44 struct st_irem
*next
; /* Linked list of structures */
45 struct st_irem
*prev
; /* Other link */
46 char *filename
; /* File in which memory was new'ed */
47 size_t datasize
; /* Size requested */
48 uint32 linenum
; /* Line number in above file */
49 uint32 SpecialValue
; /* Underrun marker value */
53 extern char NEAR curr_dir
[FN_REFLEN
],NEAR home_dir_buff
[FN_REFLEN
];
55 extern volatile int _my_signals
;
56 extern struct st_remember _my_sig_remember
[MAX_SIGNALS
];
58 extern const char *soundex_map
;
60 extern USED_MEM
* my_once_root_block
;
61 extern uint my_once_extra
;
63 extern uchar
*sf_min_adress
,*sf_max_adress
;
64 extern uint sf_malloc_count
;
65 extern struct st_irem
*sf_malloc_root
;
67 extern struct st_my_file_info my_file_info_default
[MY_NFILE
];
69 extern ulonglong query_performance_frequency
, query_performance_offset
;
71 #if defined(THREAD) && !defined(__WIN__)
72 extern sigset_t my_signals
; /* signals blocked by mf_brkhant */