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76989cf55c
Docs/manual.texi: Updated section of how to change the socket file. Changelog for 3.23.43 include/merge.h: Fixed typo include/my_pthread.h: Fixed bug for WIN32 include/myisam.h: Fixed typo include/nisam.h: Fixed typo sql/handler.h: Fixed typo sql/sql_table.cc: Fixed typo sql/unireg.cc: F
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* Update current record in heap-database */
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#include "heapdef.h"
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int heap_update(HP_INFO *info, const byte *old, const byte *heap_new)
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{
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uint key;
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byte *pos;
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HP_SHARE *share=info->s;
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DBUG_ENTER("heap_update");
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test_active(info);
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pos=info->current_ptr;
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if (info->opt_flag & READ_CHECK_USED && _hp_rectest(info,old))
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DBUG_RETURN(my_errno); /* Record changed */
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if (--(share->records) < share->blength >> 1) share->blength>>= 1;
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share->changed=1;
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for (key=0 ; key < share->keys ; key++)
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{
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if (_hp_rec_key_cmp(share->keydef+key,old,heap_new))
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{
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if (_hp_delete_key(info,share->keydef+key,old,pos,key ==
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(uint) info->lastinx) ||
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_hp_write_key(share,share->keydef+key,heap_new,pos))
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goto err;
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}
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}
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memcpy(pos,heap_new,(size_t) share->reclength);
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if (++(share->records) == share->blength) share->blength+= share->blength;
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DBUG_RETURN(0);
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err:
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if (my_errno == HA_ERR_FOUND_DUPP_KEY)
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{
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info->errkey=key;
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do
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{
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if (_hp_rec_key_cmp(share->keydef+key,old,heap_new))
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{
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if (_hp_delete_key(info,share->keydef+key,heap_new,pos,0) ||
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_hp_write_key(share,share->keydef+key,old,pos))
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break;
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}
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} while (key-- > 0);
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}
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if (++(share->records) == share->blength) share->blength+= share->blength;
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DBUG_RETURN(my_errno);
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} /* heap_update */
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