LTP GCOV extension - code coverage report
Current view: directory - storage/maria - ma_update.c
Test: maria-mtr.html
Date: 2009-03-04 Instrumented lines: 98
Code covered: 0.0 % Executed lines: 0

       1                 : /* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
       2                 : 
       3                 :    This program is free software; you can redistribute it and/or modify
       4                 :    it under the terms of the GNU General Public License as published by
       5                 :    the Free Software Foundation; version 2 of the License.
       6                 : 
       7                 :    This program is distributed in the hope that it will be useful,
       8                 :    but WITHOUT ANY WARRANTY; without even the implied warranty of
       9                 :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      10                 :    GNU General Public License for more details.
      11                 : 
      12                 :    You should have received a copy of the GNU General Public License
      13                 :    along with this program; if not, write to the Free Software
      14                 :    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
      15                 : 
      16                 : #include "ma_fulltext.h"
      17                 : #include "ma_rt_index.h"
      18                 : #include "trnman.h"
      19                 : 
      20                 : /**
      21                 :    Update an old row in a MARIA table
      22                 : */
      23                 : 
      24                 : int maria_update(register MARIA_HA *info, const uchar *oldrec, uchar *newrec)
      25               0 : {
      26                 :   int flag,key_changed,save_errno;
      27                 :   reg3 my_off_t pos;
      28                 :   uint i;
      29                 :   uchar old_key_buff[MARIA_MAX_KEY_BUFF],*new_key_buff;
      30               0 :   my_bool auto_key_changed= 0;
      31                 :   ulonglong changed;
      32               0 :   MARIA_SHARE *share= info->s;
      33                 :   MARIA_KEYDEF *keyinfo;
      34               0 :   DBUG_ENTER("maria_update");
      35               0 :   LINT_INIT(new_key_buff);
      36               0 :   LINT_INIT(changed);
      37                 : 
      38               0 :   DBUG_EXECUTE_IF("maria_pretend_crashed_table_on_usage",
      39                 :                   maria_print_error(info->s, HA_ERR_CRASHED);
      40                 :                   DBUG_RETURN(my_errno= HA_ERR_CRASHED););
      41               0 :   if (!(info->update & HA_STATE_AKTIV))
      42                 :   {
      43               0 :     DBUG_RETURN(my_errno=HA_ERR_KEY_NOT_FOUND);
      44                 :   }
      45               0 :   if (share->options & HA_OPTION_READ_ONLY_DATA)
      46                 :   {
      47               0 :     DBUG_RETURN(my_errno=EACCES);
      48                 :   }
      49               0 :   if (share->state.state.key_file_length >= share->base.margin_key_file_length)
      50                 :   {
      51               0 :     DBUG_RETURN(my_errno=HA_ERR_INDEX_FILE_FULL);
      52                 :   }
      53               0 :   pos= info->cur_row.lastpos;
      54               0 :   if (_ma_readinfo(info,F_WRLCK,1))
      55               0 :     DBUG_RETURN(my_errno);
      56                 : 
      57               0 :   if ((*share->compare_record)(info,oldrec))
      58                 :   {
      59               0 :     save_errno= my_errno;
      60               0 :     DBUG_PRINT("warning", ("Got error from compare record"));
      61               0 :     goto err_end;                       /* Record has changed */
      62                 :   }
      63                 : 
      64                 :   /* Calculate and check all unique constraints */
      65               0 :   key_changed=0;
      66               0 :   for (i=0 ; i < share->state.header.uniques ; i++)
      67                 :   {
      68               0 :     MARIA_UNIQUEDEF *def=share->uniqueinfo+i;
      69               0 :     if (_ma_unique_comp(def, newrec, oldrec,1) &&
      70                 :         _ma_check_unique(info, def, newrec, _ma_unique_hash(def, newrec),
      71                 :                          pos))
      72                 :     {
      73               0 :       save_errno=my_errno;
      74               0 :       goto err_end;
      75                 :     }
      76                 :   }
      77               0 :   if (_ma_mark_file_changed(info))
      78                 :   {
      79               0 :     save_errno=my_errno;
      80               0 :     goto err_end;
      81                 :   }
      82                 : 
      83                 :   /* Ensure we don't try to restore auto_increment if it doesn't change */
      84               0 :   info->last_auto_increment= ~(ulonglong) 0;
      85                 : 
      86                 :   /* Check which keys changed from the original row */
      87                 : 
      88               0 :   new_key_buff= info->lastkey_buff2;
      89               0 :   changed=0;
      90               0 :   for (i=0, keyinfo= share->keyinfo ; i < share->base.keys ; i++, keyinfo++)
      91                 :   {
      92               0 :     if (maria_is_key_active(share->state.key_map, i))
      93                 :     {
      94               0 :       if (keyinfo->flag & HA_FULLTEXT )
      95                 :       {
      96               0 :         if (_ma_ft_cmp(info,i,oldrec, newrec))
      97                 :         {
      98               0 :           if ((int) i == info->lastinx)
      99                 :           {
     100                 :           /*
     101                 :             We are changeing the index we are reading on.  Mark that
     102                 :             the index data has changed and we need to do a full search
     103                 :             when doing read-next
     104                 :           */
     105               0 :             key_changed|=HA_STATE_WRITTEN;
     106                 :           }
     107               0 :           changed|=((ulonglong) 1 << i);
     108               0 :           if (_ma_ft_update(info,i,old_key_buff,oldrec,newrec,pos))
     109                 :             goto err;
     110                 :         }
     111                 :       }
     112                 :       else
     113                 :       {
     114                 :         MARIA_KEY new_key, old_key;
     115                 : 
     116               0 :         (*keyinfo->make_key)(info,&new_key, i, new_key_buff, newrec,
     117                 :                              pos, info->trn->trid);
     118               0 :         (*keyinfo->make_key)(info,&old_key, i, old_key_buff,
     119                 :                              oldrec, pos, info->cur_row.trid);
     120                 : 
     121                 :         /* The above changed info->lastkey2. Inform maria_rnext_same(). */
     122               0 :         info->update&= ~HA_STATE_RNEXT_SAME;
     123                 : 
     124               0 :         if (new_key.data_length != old_key.data_length ||
     125                 :             memcmp(old_key.data, new_key.data, new_key.data_length))
     126                 :         {
     127               0 :           if ((int) i == info->lastinx)
     128               0 :             key_changed|=HA_STATE_WRITTEN;      /* Mark that keyfile changed */
     129               0 :           changed|=((ulonglong) 1 << i);
     130               0 :           keyinfo->version++;
     131               0 :           if (keyinfo->ck_delete(info,&old_key))
     132               0 :             goto err;
     133               0 :           if (keyinfo->ck_insert(info,&new_key))
     134               0 :             goto err;
     135               0 :           if (share->base.auto_key == i+1)
     136               0 :             auto_key_changed=1;
     137                 :         }
     138                 :       }
     139                 :     }
     140                 :   }
     141                 : 
     142               0 :   if (share->calc_checksum)
     143                 :   {
     144                 :     /*
     145                 :       We can't use the row based checksum as this doesn't have enough
     146                 :       precision (one byte, while the table's is more bytes).
     147                 :       At least _ma_check_unique() modifies the 'newrec' record, so checksum
     148                 :       has to be computed _after_ it. Nobody apparently modifies 'oldrec'.
     149                 :       We need to pass the old row's checksum down to (*update_record)(), we do
     150                 :       this via info->new_row.checksum (not intuitive but existing code
     151                 :       mandated that cur_row is the new row).
     152                 :       If (*update_record)() fails, table will be marked corrupted so no need
     153                 :       to revert the live checksum change.
     154                 :     */
     155               0 :     info->cur_row.checksum= (*share->calc_checksum)(info, newrec);
     156               0 :     info->new_row.checksum= (*share->calc_checksum)(info, oldrec);
     157               0 :     info->state->checksum+= info->cur_row.checksum - info->new_row.checksum;
     158                 :   }
     159                 : 
     160               0 :   if ((*share->update_record)(info, pos, oldrec, newrec))
     161               0 :     goto err;
     162                 : 
     163               0 :   if (auto_key_changed & !share->now_transactional)
     164                 :   {
     165               0 :     const HA_KEYSEG *keyseg= share->keyinfo[share->base.auto_key-1].seg;
     166               0 :     const uchar *key= newrec + keyseg->start;
     167               0 :     set_if_bigger(share->state.auto_increment,
     168                 :                   ma_retrieve_auto_increment(key, keyseg->type));
     169                 :   }
     170                 : 
     171                 :   /*
     172                 :     We can't yet have HA_STATE_AKTIV here, as block_record dosn't support it
     173                 :   */
     174               0 :   info->update= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED | key_changed);
     175               0 :   share->state.changed|= STATE_NOT_MOVABLE | STATE_NOT_ZEROFILLED;
     176               0 :   info->state->changed= 1;
     177                 : 
     178                 :   /*
     179                 :     Every Maria function that updates Maria table must end with
     180                 :     call to _ma_writeinfo(). If operation (second param of
     181                 :     _ma_writeinfo()) is not 0 it sets share->changed to 1, that is
     182                 :     flags that data has changed. If operation is 0, this function
     183                 :     equals to no-op in this case.
     184                 : 
     185                 :     ma_update() must always pass !0 value as operation, since even if
     186                 :     there is no index change there could be data change.
     187                 :   */
     188               0 :   VOID(_ma_writeinfo(info, WRITEINFO_UPDATE_KEYFILE));
     189                 :   allow_break();                                /* Allow SIGHUP & SIGINT */
     190               0 :   if (info->invalidator != 0)
     191                 :   {
     192               0 :     DBUG_PRINT("info", ("invalidator... '%s' (update)",
     193                 :                         share->open_file_name.str));
     194               0 :     (*info->invalidator)(share->open_file_name.str);
     195               0 :     info->invalidator=0;
     196                 :   }
     197               0 :   DBUG_RETURN(0);
     198                 : 
     199               0 : err:
     200               0 :   DBUG_PRINT("error",("key: %d  errno: %d",i,my_errno));
     201               0 :   save_errno= my_errno;
     202               0 :   DBUG_ASSERT(save_errno);
     203               0 :   if (!save_errno)
     204               0 :     save_errno= HA_ERR_INTERNAL_ERROR;          /* Should never happen */
     205                 : 
     206               0 :   if (my_errno == HA_ERR_FOUND_DUPP_KEY || my_errno == HA_ERR_OUT_OF_MEM ||
     207                 :       my_errno == HA_ERR_RECORD_FILE_FULL)
     208                 :   {
     209               0 :     info->errkey= (int) i;
     210               0 :     flag=0;
     211                 :     do
     212                 :     {
     213               0 :       if (((ulonglong) 1 << i) & changed)
     214                 :       {
     215               0 :         if (share->keyinfo[i].flag & HA_FULLTEXT)
     216                 :         {
     217               0 :           if ((flag++ && _ma_ft_del(info,i,new_key_buff,newrec,pos)) ||
     218                 :               _ma_ft_add(info,i,old_key_buff,oldrec,pos))
     219                 :             break;
     220                 :         }
     221                 :         else
     222                 :         {
     223                 :           MARIA_KEY new_key, old_key;
     224               0 :           (*share->keyinfo[i].make_key)(info, &new_key, i, new_key_buff,
     225                 :                                         newrec, pos,
     226                 :                                         info->trn->trid);
     227               0 :           (*share->keyinfo[i].make_key)(info, &old_key, i, old_key_buff,
     228                 :                                         oldrec, pos, info->cur_row.trid);
     229               0 :           if ((flag++ && _ma_ck_delete(info, &new_key)) ||
     230                 :               _ma_ck_write(info, &old_key))
     231                 :             break;
     232                 :         }
     233                 :       }
     234               0 :     } while (i-- != 0);
     235                 :   }
     236                 :   else
     237                 :   {
     238               0 :     maria_print_error(share, HA_ERR_CRASHED);
     239               0 :     maria_mark_crashed(info);
     240                 :   }
     241               0 :   info->update= (HA_STATE_CHANGED | HA_STATE_AKTIV | HA_STATE_ROW_CHANGED |
     242                 :                  key_changed);
     243                 : 
     244               0 :  err_end:
     245               0 :   VOID(_ma_writeinfo(info,WRITEINFO_UPDATE_KEYFILE));
     246                 :   allow_break();                                /* Allow SIGHUP & SIGINT */
     247               0 :   if (save_errno == HA_ERR_KEY_NOT_FOUND)
     248                 :   {
     249               0 :     maria_print_error(share, HA_ERR_CRASHED);
     250               0 :     save_errno=HA_ERR_CRASHED;
     251                 :   }
     252               0 :   DBUG_RETURN(my_errno=save_errno);
     253                 : } /* maria_update */

Generated by: LTP GCOV extension version 1.4