diff options
Diffstat (limited to 'storage/myisam/mi_info.c')
| -rw-r--r-- | storage/myisam/mi_info.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/storage/myisam/mi_info.c b/storage/myisam/mi_info.c new file mode 100644 index 00000000..b754dde2 --- /dev/null +++ b/storage/myisam/mi_info.c @@ -0,0 +1,136 @@ +/* Copyright (c) 2000, 2001, 2003-2007 MySQL AB, 2009 Sun Microsystems, Inc. + Use is subject to license terms. + + 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 */ + +/* Return useful base information for an open table */ + +#include "myisamdef.h" +#ifdef _WIN32 +#include <sys/stat.h> +#endif + + /* Get position to last record */ + +my_off_t mi_position(MI_INFO *info) +{ + return info->lastpos; +} + + +/* Get information about the table */ +/* if flag == 2 one get current info (no sync from database */ + +int mi_status(MI_INFO *info, register MI_ISAMINFO *x, uint flag) +{ + MY_STAT state; + MYISAM_SHARE *share=info->s; + DBUG_ENTER("mi_status"); + + x->recpos = info->lastpos; + if (flag == HA_STATUS_POS) + DBUG_RETURN(0); /* Compatible with ISAM */ + if (!(flag & HA_STATUS_NO_LOCK)) + { + mysql_mutex_lock(&share->intern_lock); + (void) _mi_readinfo(info,F_RDLCK,0); + fast_mi_writeinfo(info); + mysql_mutex_unlock(&share->intern_lock); + } + if (flag & HA_STATUS_VARIABLE) + { + x->records = info->state->records; + x->deleted = info->state->del; + x->delete_length = info->state->empty; + x->data_file_length =info->state->data_file_length; + x->index_file_length=info->state->key_file_length; + + x->keys = share->state.header.keys; + x->check_time = share->state.check_time; + x->mean_reclength= x->records ? + (ulong) ((x->data_file_length - x->delete_length) / x->records) : + (ulong) share->min_pack_length; + } + if (flag & HA_STATUS_ERRKEY) + { + x->errkey = info->errkey; + x->dupp_key_pos= info->dupp_key_pos; + } + if (flag & HA_STATUS_CONST) + { + x->reclength = share->base.reclength; + x->max_data_file_length=share->base.max_data_file_length; + x->max_index_file_length=info->s->base.max_key_file_length; + x->filenr = info->dfile; + x->options = share->options; + x->create_time=share->state.create_time; + x->reflength= mi_get_pointer_length(share->base.max_data_file_length, + myisam_data_pointer_size); + x->record_offset= ((share->options & + (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)) ? + 0L : share->base.pack_reclength); + x->sortkey= -1; /* No clustering */ + x->rec_per_key = share->state.rec_per_key_part; + x->key_map = share->state.key_map; + x->data_file_name = share->data_file_name; + x->index_file_name = share->index_file_name; + } + if ((flag & HA_STATUS_TIME) && !mysql_file_fstat(info->dfile, &state, MYF(0))) + { + MSAN_STAT_WORKAROUND(&state); + x->update_time=state.st_mtime; + } + else + x->update_time=0; + if (flag & HA_STATUS_AUTO) + { + x->auto_increment= share->state.auto_increment+1; + if (!x->auto_increment) /* This shouldn't happen */ + x->auto_increment= ~(ulonglong) 0; + } + DBUG_RETURN(0); +} + + +/* + Write a message to the error log. + + SYNOPSIS + mi_report_error() + file_name Name of table file (e.g. index_file_name). + errcode Error number. + + DESCRIPTION + This function supplies my_error() with a table name. Most error + messages need one. Since string arguments in error messages are limited + to 64 characters by convention, we ensure that in case of truncation, + that the end of the index file path is in the message. This contains + the most valuable information (the table name and the database name). + + RETURN + void +*/ + +void mi_report_error(int errcode, const char *file_name) +{ + size_t lgt; + DBUG_ENTER("mi_report_error"); + DBUG_PRINT("enter",("errcode %d, table '%s'", errcode, file_name)); + + if ((lgt= strlen(file_name)) > 64) + file_name+= lgt - 64; + my_error(errcode, MYF(ME_ERROR_LOG), file_name); + DBUG_VOID_RETURN; +} + |