From a175314c3e5827eb193872241446f2f8f5c9d33c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 20:07:14 +0200 Subject: Adding upstream version 1:10.5.12. Signed-off-by: Daniel Baumann --- storage/maria/ma_scan.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 storage/maria/ma_scan.c (limited to 'storage/maria/ma_scan.c') diff --git a/storage/maria/ma_scan.c b/storage/maria/ma_scan.c new file mode 100644 index 00000000..5f2945a3 --- /dev/null +++ b/storage/maria/ma_scan.c @@ -0,0 +1,75 @@ +/* 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 */ + +/* Read through all rows sequntially */ + +#include "maria_def.h" + +int maria_scan_init(register MARIA_HA *info) +{ + DBUG_ENTER("maria_scan_init"); + + info->cur_row.nextpos= info->s->pack.header_length; /* Read first record */ + info->lastinx= -1; /* Can't forward or backward */ + if (info->opt_flag & WRITE_CACHE_USED && flush_io_cache(&info->rec_cache)) + DBUG_RETURN(my_errno); + + if ((*info->s->scan_init)(info)) + DBUG_RETURN(my_errno); + DBUG_RETURN(0); +} + +/* + Read a row based on position. + + SYNOPSIS + maria_scan() + info Maria handler + record Read data here + + RETURN + 0 ok + HA_ERR_END_OF_FILE End of file + HA_ERR_RECORD_DELETED Record was deleted (can only happen for static rec) + # Error code +*/ + +int maria_scan(MARIA_HA *info, uchar *record) +{ + DBUG_ENTER("maria_scan"); + /* Init all but update-flag */ + info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED); + DBUG_RETURN((*info->s->scan)(info, record, info->cur_row.nextpos, 1)); +} + + +void maria_scan_end(MARIA_HA *info) +{ + (*info->s->scan_end)(info); +} + + +int _ma_def_scan_remember_pos(MARIA_HA *info, MARIA_RECORD_POS *lastpos) +{ + *lastpos= info->cur_row.lastpos; + return 0; +} + + +int _ma_def_scan_restore_pos(MARIA_HA *info, MARIA_RECORD_POS lastpos) +{ + info->cur_row.nextpos= lastpos; + return 0; +} -- cgit v1.2.3