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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 12:24:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-13 12:24:36 +0000 |
commit | 06eaf7232e9a920468c0f8d74dcf2fe8b555501c (patch) | |
tree | e2c7b5777f728320e5b5542b6213fd3591ba51e2 /storage/maria/ma_rsame.c | |
parent | Initial commit. (diff) | |
download | mariadb-06eaf7232e9a920468c0f8d74dcf2fe8b555501c.tar.xz mariadb-06eaf7232e9a920468c0f8d74dcf2fe8b555501c.zip |
Adding upstream version 1:10.11.6.upstream/1%10.11.6
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'storage/maria/ma_rsame.c')
-rw-r--r-- | storage/maria/ma_rsame.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/storage/maria/ma_rsame.c b/storage/maria/ma_rsame.c new file mode 100644 index 00000000..ae9545b9 --- /dev/null +++ b/storage/maria/ma_rsame.c @@ -0,0 +1,78 @@ +/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + 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 Street, Fifth Floor, Boston, MA 02110-1335 USA */ + +#include "maria_def.h" + +/** + Find current row with read on position or read on key + + @notes + If inx >= 0 find record using key else re-read row on last position + + @warning + This function is not row version safe. + This is not crtical as this function is not used by MySQL + + @return + @retval 0 Ok + @retval HA_ERR_KEY_NOT_FOUND Row is deleted + @retval HA_ERR_END_OF_FILE End of file + @retval HA_ERR_WRONG_INDEX Wrong inx argument +*/ + + +int maria_rsame(MARIA_HA *info, uchar *record, int inx) +{ + DBUG_ENTER("maria_rsame"); + + if (inx >= 0 && _ma_check_index(info, inx) < 0) + { + DBUG_PRINT("error", ("wrong index usage")); + DBUG_RETURN(my_errno); + } + if (info->cur_row.lastpos == HA_OFFSET_ERROR || + info->update & HA_STATE_DELETED) + { + DBUG_PRINT("error", ("no current record")); + DBUG_RETURN(my_errno=HA_ERR_KEY_NOT_FOUND); /* No current record */ + } + info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED); + + /* Read row from data file */ + if (fast_ma_readinfo(info)) + DBUG_RETURN(my_errno); + + if (inx >= 0) + { + MARIA_KEYDEF *keyinfo= info->last_key.keyinfo; + (*keyinfo->make_key)(info, &info->last_key, (uint) inx, + info->lastkey_buff, record, + info->cur_row.lastpos, + info->cur_row.trid); + if (info->s->lock_key_trees) + mysql_rwlock_rdlock(&keyinfo->root_lock); + _ma_search(info, &info->last_key, SEARCH_SAME, + info->s->state.key_root[inx]); + if (info->s->lock_key_trees) + mysql_rwlock_unlock(&keyinfo->root_lock); + } + + if (!(*info->read_record)(info, record, info->cur_row.lastpos)) + DBUG_RETURN(0); + if (my_errno == HA_ERR_RECORD_DELETED) + my_errno=HA_ERR_KEY_NOT_FOUND; + DBUG_PRINT("error", ("my_errno: %d", my_errno)); + DBUG_RETURN(my_errno); +} /* maria_rsame */ |