release/src/router/mysql/storage/myisammrg/myrg_panic.c

   1 /* Copyright (c) 2000, 2001, 2005, 2006 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 #include "myrg_def.h"
  17
  18         /* if flag == HA_PANIC_CLOSE then all misam files are closed */
  19         /* if flag == HA_PANIC_WRITE then all misam files are unlocked and
  20            all changed data in single user misam is written to file */
  21         /* if flag == HA_PANIC_READ then all misam files that was locked when
  22            mi_panic(HA_PANIC_WRITE) was done is locked. A mi_readinfo() is
  23            done for all single user files to get changes in database */
  24
  25
  26 int myrg_panic(enum ha_panic_function flag)
  27 {
  28   int error=0;
  29   LIST *list_element,*next_open;
  30   MYRG_INFO *info;
  31   DBUG_ENTER("myrg_panic");
  32
  33   for (list_element=myrg_open_list ; list_element ; list_element=next_open)
  34   {
  35     next_open=list_element->next;               /* Save if close */
  36     info=(MYRG_INFO*) list_element->data;
  37     if (flag == HA_PANIC_CLOSE && myrg_close(info))
  38       error=my_errno;
  39   }
  40   if (myrg_open_list && flag != HA_PANIC_CLOSE)
  41     DBUG_RETURN(mi_panic(flag));
  42   if (error)
  43     my_errno=error;
  44   DBUG_RETURN(error);
  45 }