mirror of
https://github.com/MariaDB/server.git
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115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include "fulltext.h"
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/* if flag == HA_PANIC_CLOSE then all misam files are closed */
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/* if flag == HA_PANIC_WRITE then all misam files are unlocked and
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all changed data in single user misam is written to file */
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/* if flag == HA_PANIC_READ then all misam files that was locked when
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mi_panic(HA_PANIC_WRITE) was done is locked. A mi_readinfo() is
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done for all single user files to get changes in database */
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int mi_panic(enum ha_panic_function flag)
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{
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int error=0;
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LIST *list_element,*next_open;
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MI_INFO *info;
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DBUG_ENTER("mi_panic");
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pthread_mutex_lock(&THR_LOCK_myisam);
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for (list_element=myisam_open_list ; list_element ; list_element=next_open)
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{
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next_open=list_element->next; /* Save if close */
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info=(MI_INFO*) list_element->data;
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switch (flag) {
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case HA_PANIC_CLOSE:
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pthread_mutex_unlock(&THR_LOCK_myisam); /* Not exactly right... */
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if (mi_close(info))
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error=my_errno;
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pthread_mutex_lock(&THR_LOCK_myisam);
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break;
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case HA_PANIC_WRITE: /* Do this to free databases */
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#ifdef CANT_OPEN_FILES_TWICE
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if (info->s->options & HA_OPTION_READ_ONLY_DATA)
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break;
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#endif
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if (flush_key_blocks(info->s->key_cache, info->s->kfile, FLUSH_RELEASE))
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error=my_errno;
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if (info->opt_flag & WRITE_CACHE_USED)
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if (flush_io_cache(&info->rec_cache))
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error=my_errno;
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if (info->opt_flag & READ_CACHE_USED)
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{
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if (flush_io_cache(&info->rec_cache))
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error=my_errno;
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reinit_io_cache(&info->rec_cache,READ_CACHE,0,
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(pbool) (info->lock_type != F_UNLCK),1);
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}
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if (info->lock_type != F_UNLCK && ! info->was_locked)
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{
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info->was_locked=info->lock_type;
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if (mi_lock_database(info,F_UNLCK))
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error=my_errno;
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}
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#ifdef CANT_OPEN_FILES_TWICE
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if (info->s->kfile >= 0 && my_close(info->s->kfile,MYF(0)))
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error = my_errno;
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if (info->dfile >= 0 && my_close(info->dfile,MYF(0)))
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error = my_errno;
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info->s->kfile=info->dfile= -1; /* Files aren't open anymore */
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break;
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#endif
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case HA_PANIC_READ: /* Restore to before WRITE */
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#ifdef CANT_OPEN_FILES_TWICE
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{ /* Open closed files */
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char name_buff[FN_REFLEN];
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if (info->s->kfile < 0)
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if ((info->s->kfile= my_open(fn_format(name_buff,info->filename,"",
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N_NAME_IEXT,4),info->mode,
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MYF(MY_WME))) < 0)
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error = my_errno;
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if (info->dfile < 0)
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{
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if ((info->dfile= my_open(fn_format(name_buff,info->filename,"",
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N_NAME_DEXT,4),info->mode,
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MYF(MY_WME))) < 0)
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error = my_errno;
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info->rec_cache.file=info->dfile;
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}
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}
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#endif
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if (info->was_locked)
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{
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if (mi_lock_database(info, info->was_locked))
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error=my_errno;
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info->was_locked=0;
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}
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break;
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}
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}
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if (flag == HA_PANIC_CLOSE)
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{
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VOID(mi_log(0)); /* Close log if neaded */
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ft_free_stopwords();
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}
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pthread_mutex_unlock(&THR_LOCK_myisam);
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if (!error)
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DBUG_RETURN(0);
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DBUG_RETURN(my_errno=error);
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} /* mi_panic */
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