release/src/router/mysql/mysys/my_static.h

   1 /* Copyright (c) 2000, 2002-2004, 2007, 2008 MySQL AB
   2
   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.
   6
   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.
  11
  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 */
  15
  16 /*
  17   Static variables for mysys library. All definied here for easy making of
  18   a shared library
  19 */
  20
  21 C_MODE_START
  22 #include <signal.h>
  23
  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
  28
  29 struct st_remember {
  30   int number;
  31   sig_handler (*func)(int number);
  32 };
  33
  34 /*
  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
  39   boundary.
  40 */
  41
  42 struct st_irem
  43 {
  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           */
  50 };
  51
  52
  53 extern char     NEAR curr_dir[FN_REFLEN],NEAR home_dir_buff[FN_REFLEN];
  54
  55 extern volatile int _my_signals;
  56 extern struct st_remember _my_sig_remember[MAX_SIGNALS];
  57
  58 extern const char *soundex_map;
  59
  60 extern USED_MEM* my_once_root_block;
  61 extern uint      my_once_extra;
  62
  63 extern uchar    *sf_min_adress,*sf_max_adress;
  64 extern uint     sf_malloc_count;
  65 extern struct st_irem *sf_malloc_root;
  66
  67 extern struct st_my_file_info my_file_info_default[MY_NFILE];
  68
  69 extern ulonglong query_performance_frequency, query_performance_offset;
  70
  71 #if defined(THREAD) && !defined(__WIN__)
  72 extern sigset_t my_signals;             /* signals blocked by mf_brkhant */
  73 #endif
  74 C_MODE_END