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- /* Copyright (c) 2000, 2021, Oracle and/or its affiliates.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License, version 2.0,
- as published by the Free Software Foundation.
-
- This program is also distributed with certain software (including
- but not limited to OpenSSL) that is licensed under separate terms,
- as designated in a particular file or component or in included license
- documentation. The authors of MySQL hereby grant you an additional
- permission to link the program and your derivative works with the
- separately licensed software that they have included with MySQL.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License, version 2.0, for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
-
- /* close a isam-database */
- /*
- TODO:
- We need to have a separate mutex on the closed file to allow other threads
- to open other files during the time we flush the cache and close this file
- */
-
- #include "myisamdef.h"
-
- int mi_close_share(register MI_INFO *info, my_bool *closed_share)
- {
- int error=0,flag;
- MYISAM_SHARE *share=info->s;
- DBUG_ENTER("mi_close_share");
- DBUG_PRINT("enter",("base: 0x%lx reopen: %u locks: %u",
- (long) info, (uint) share->reopen,
- (uint) share->tot_locks));
-
- if (info->open_list.data)
- mysql_mutex_lock(&THR_LOCK_myisam);
- if (info->lock_type == F_EXTRA_LCK)
- info->lock_type=F_UNLCK; /* HA_EXTRA_NO_USER_CHANGE */
-
- if (info->lock_type != F_UNLCK)
- {
- if (mi_lock_database(info,F_UNLCK))
- error=my_errno();
- }
- mysql_mutex_lock(&share->intern_lock);
-
- if (share->options & HA_OPTION_READ_ONLY_DATA)
- {
- share->r_locks--;
- share->tot_locks--;
- }
- if (info->opt_flag & (READ_CACHE_USED | WRITE_CACHE_USED))
- {
- if (end_io_cache(&info->rec_cache))
- error=my_errno();
- info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED);
- }
- flag= !--share->reopen;
- if (info->open_list.data)
- myisam_open_list= list_delete(myisam_open_list, &info->open_list);
- mysql_mutex_unlock(&share->intern_lock);
-
- my_free(mi_get_rec_buff_ptr(info, info->rec_buff));
- if (flag)
- {
- DBUG_EXECUTE_IF("crash_before_flush_keys",
- if (share->kfile >= 0) abort(););
- if (share->kfile >= 0 &&
- flush_key_blocks(share->key_cache, keycache_thread_var(),
- share->kfile,
- share->temporary ? FLUSH_IGNORE_CHANGED :
- FLUSH_RELEASE))
- error=my_errno();
- if (share->kfile >= 0)
- {
- /*
- If we are crashed, we can safely flush the current state as it will
- not change the crashed state.
- We can NOT write the state in other cases as other threads
- may be using the file at this point
- */
- if (share->mode != O_RDONLY && mi_is_crashed(info))
- mi_state_info_write(share->kfile, &share->state, 1);
- /* Decrement open count must be last I/O on this file. */
- _mi_decrement_open_count(info);
- if (mysql_file_close(share->kfile, MYF(0)))
- error = my_errno();
- }
- if (share->file_map)
- {
- if (share->options & HA_OPTION_COMPRESS_RECORD)
- _mi_unmap_file(info);
- else
- mi_munmap_file(info);
- }
- if (share->decode_trees)
- {
- my_free(share->decode_trees);
- my_free(share->decode_tables);
- }
- thr_lock_delete(&share->lock);
- mysql_mutex_destroy(&share->intern_lock);
- {
- int i,keys;
- keys = share->state.header.keys;
- mysql_rwlock_destroy(&share->mmap_lock);
- for(i=0; i<keys; i++) {
- mysql_rwlock_destroy(&share->key_root_lock[i]);
- }
- }
- my_free(info->s);
- if (closed_share)
- *closed_share= TRUE;
- }
- if (info->open_list.data)
- mysql_mutex_unlock(&THR_LOCK_myisam);
- if (info->ftparser_param)
- {
- my_free(info->ftparser_param);
- info->ftparser_param= 0;
- }
- if (info->dfile >= 0 && mysql_file_close(info->dfile, MYF(0)))
- error = my_errno();
-
- myisam_log_command(MI_LOG_CLOSE,info,NULL,0,error);
- my_free(info);
-
- if (error)
- {
- set_my_errno(error);
- DBUG_RETURN(error);
- }
- DBUG_RETURN(0);
- } /* mi_close_share */
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