diff options
Diffstat (limited to 'storage/myisam/mi_close.c')
| -rw-r--r-- | storage/myisam/mi_close.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/storage/myisam/mi_close.c b/storage/myisam/mi_close.c new file mode 100644 index 00000000..56197729 --- /dev/null +++ b/storage/myisam/mi_close.c @@ -0,0 +1,137 @@ +/* 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->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 */ |