mariadb/storage/xtradb/include/row0ext.ic
Sergei Golubchik ffa8c4cfcc Percona-Server-5.6.14-rel62.0 merge
support ha_innodb.so as a dynamic plugin.
* remove obsolete *,innodb_plugin.rdiff files
* s/--plugin-load=/--plugin-load-add=/
* MYSQL_PLUGIN_IMPORT glob_hostname[]
* use my_error instead of push_warning_printf(ER_DEFAULT)
* don't use tdc_size and tc_size in a module

update test cases (XtraDB is 5.6.14, InnoDB is 5.6.10)
* copy new tests over
* disable some tests for (old) InnoDB
* delete XtraDB tests that no longer apply

small compatibility changes:
* s/HTON_EXTENDED_KEYS/HTON_SUPPORTS_EXTENDED_KEYS/
* revert unnecessary InnoDB changes to make it a bit closer to the upstream

fix XtraDB to compile on Windows (both as a static and a dynamic plugin)

disable XtraDB on Windows (deadlocks) and where no atomic ops are available (e.g. CentOS 5)


storage/innobase/handler/ha_innodb.cc:
  revert few unnecessary changes to make it a bit closer to the original InnoDB
storage/innobase/include/univ.i:
  correct the version to match what it was merged from
2013-12-22 17:06:50 +01:00

87 lines
2.7 KiB
Text

/*****************************************************************************
Copyright (c) 2006, 2009, Oracle and/or its affiliates. All Rights Reserved.
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, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
/**************************************************//**
@file include/row0ext.ic
Caching of externally stored column prefixes
Created September 2006 Marko Makela
*******************************************************/
#include "rem0types.h"
#include "btr0types.h"
/********************************************************************//**
Looks up a column prefix of an externally stored column.
@return column prefix, or NULL if the column is not stored externally,
or pointer to field_ref_zero if the BLOB pointer is unset */
UNIV_INLINE
const byte*
row_ext_lookup_ith(
/*===============*/
const row_ext_t* ext, /*!< in/out: column prefix cache */
ulint i, /*!< in: index of ext->ext[] */
ulint* len) /*!< out: length of prefix, in bytes,
at most ext->max_len */
{
ut_ad(ext);
ut_ad(len);
ut_ad(i < ext->n_ext);
*len = ext->len[i];
ut_ad(*len <= ext->max_len);
ut_ad(ext->max_len > 0);
if (*len == 0) {
/* The BLOB could not be fetched to the cache. */
return(field_ref_zero);
} else {
return(ext->buf + i * ext->max_len);
}
}
/********************************************************************//**
Looks up a column prefix of an externally stored column.
@return column prefix, or NULL if the column is not stored externally,
or pointer to field_ref_zero if the BLOB pointer is unset */
UNIV_INLINE
const byte*
row_ext_lookup(
/*===========*/
const row_ext_t* ext, /*!< in: column prefix cache */
ulint col, /*!< in: column number in the InnoDB
table object, as reported by
dict_col_get_no(); NOT relative to the
records in the clustered index */
ulint* len) /*!< out: length of prefix, in bytes,
at most ext->max_len */
{
ulint i;
ut_ad(ext);
ut_ad(len);
for (i = 0; i < ext->n_ext; i++) {
if (col == ext->ext[i]) {
return(row_ext_lookup_ith(ext, i, len));
}
}
return(NULL);
}