86 lines
3.4 KiB
C++
86 lines
3.4 KiB
C++
/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include <fcntl.h>
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#include "my_dbug.h"
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#include "storage/myisam/fulltext.h"
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#include "storage/myisam/myisamdef.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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int error = 0;
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LIST *list_element, *next_open;
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MI_INFO *info;
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DBUG_TRACE;
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mysql_mutex_lock(&THR_LOCK_myisam);
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for (list_element = myisam_open_list; list_element;
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list_element = next_open) {
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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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mysql_mutex_unlock(&THR_LOCK_myisam); /* Not exactly right... */
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if (mi_close(info)) error = my_errno();
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mysql_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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if (flush_key_blocks(info->s->key_cache, keycache_thread_var(),
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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)) error = my_errno();
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if (info->opt_flag & READ_CACHE_USED) {
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if (flush_io_cache(&info->rec_cache)) error = my_errno();
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reinit_io_cache(&info->rec_cache, READ_CACHE, 0,
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(bool)(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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info->was_locked = info->lock_type;
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if (mi_lock_database(info, F_UNLCK)) error = my_errno();
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}
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break;
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case HA_PANIC_READ: /* Restore to before WRITE */
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if (info->was_locked) {
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if (mi_lock_database(info, info->was_locked)) 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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(void)mi_log(0); /* Close log if neaded */
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ft_free_stopwords();
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}
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mysql_mutex_unlock(&THR_LOCK_myisam);
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if (!error) return 0;
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set_my_errno(error);
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return error;
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} /* mi_panic */
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