/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; version 2 of the License .
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 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 02110-1335 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 "ftdefs.h"
int mi_close(register MI_INFO *info)
{
int error=0 ,flag;
MYISAM_SHARE *share=info->s;
DBUG_ENTER("mi_close" );
DBUG_PRINT("enter" ,("base: %p reopen: %u locks: %u" ,
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));
ftparser_call_deinitializer(info);
if (flag)
{
DBUG_EXECUTE_IF("crash_before_flush_keys" ,
if (share->kfile >= 0 ) DBUG_SUICIDE(););
if (share->kfile >= 0 &&
flush_key_blocks(share->key_cache, share->kfile, &share->dirty_part_map,
share->deleting ? 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 using - - external - locking .
Also , write the state if a temporary table is not being dropped
( the server might want to reopen it , and mi_lock_database ( ) only
writes the state for non - temp ones )
*/
if (share->index_mode != O_RDONLY &&
(mi_is_crashed(info) || (share->temporary && !share->deleting)))
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;
}
#ifdef HAVE_MMAP
if (share->file_map)
{
if (share->options & HA_OPTION_COMPRESS_RECORD)
_mi_unmap_file(info);
else
mi_munmap_file(info);
}
#endif
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 (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)
{
DBUG_RETURN(my_errno=error);
}
DBUG_RETURN(0 );
} /* mi_close */
Messung V0.5 in Prozent C=95 H=93 G=93
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-10-08)
¤
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