release/src/router/mysql/storage/heap/hp_panic.c

   1 /* Copyright (c) 2000-2002, 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 "heapdef.h"
  17
  18         /* if flag == HA_PANIC_CLOSE then all files are removed for more
  19            memory */
  20
  21 int hp_panic(enum ha_panic_function flag)
  22 {
  23   LIST *element,*next_open;
  24   DBUG_ENTER("hp_panic");
  25
  26   pthread_mutex_lock(&THR_LOCK_heap);
  27   for (element=heap_open_list ; element ; element=next_open)
  28   {
  29     HP_INFO *info=(HP_INFO*) element->data;
  30     next_open=element->next;    /* Save if close */
  31     switch (flag) {
  32     case HA_PANIC_CLOSE:
  33       hp_close(info);
  34       break;
  35     default:
  36       break;
  37     }
  38   }
  39   for (element=heap_share_list ; element ; element=next_open)
  40   {
  41     HP_SHARE *share=(HP_SHARE*) element->data;
  42     next_open=element->next;    /* Save if close */
  43     switch (flag) {
  44     case HA_PANIC_CLOSE:
  45     {
  46       if (!share->open_count)
  47         hp_free(share);
  48       break;
  49     }
  50     default:
  51       break;
  52     }
  53   }
  54   pthread_mutex_unlock(&THR_LOCK_heap);
  55   DBUG_RETURN(0);
  56 } /* hp_panic */