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Viewing changes to storage/innobase/include/row0ext.h

Removing global errbuff and cleaning up two remaining instances that referenced it.

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storage/innobase/include/row0ext.h
 
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/*****************************************************************************
 
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Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved.
 
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This program is free software; you can redistribute it and/or modify it under
 
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the terms of the GNU General Public License as published by the Free Software
 
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Foundation; version 2 of the License.
 
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This program is distributed in the hope that it will be useful, but WITHOUT
 
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 
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You should have received a copy of the GNU General Public License along with
 
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 
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Place, Suite 330, Boston, MA 02111-1307 USA
 
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*****************************************************************************/
 
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/******************************************************
 
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Caching of externally stored column prefixes
 
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Created September 2006 Marko Makela
 
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*******************************************************/
 
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#ifndef row0ext_h
 
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#define row0ext_h
 
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#include "univ.i"
 
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#include "row0types.h"
 
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#include "data0types.h"
 
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#include "mem0mem.h"
 
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/************************************************************************
 
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Creates a cache of column prefixes of externally stored columns. */
 
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UNIV_INTERN
 
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row_ext_t*
 
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row_ext_create(
 
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/*===========*/
 
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                                /* out,own: column prefix cache */
 
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        ulint           n_ext,  /* in: number of externally stored columns */
 
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        const ulint*    ext,    /* in: col_no's of externally stored columns
 
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                                in the InnoDB table object, as reported by
 
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                                dict_col_get_no(); NOT relative to the records
 
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                                in the clustered index */
 
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        const dtuple_t* tuple,  /* in: data tuple containing the field
 
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                                references of the externally stored
 
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                                columns; must be indexed by col_no;
 
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                                the clustered index record must be
 
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                                covered by a lock or a page latch
 
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                                to prevent deletion (rollback or purge). */
 
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        ulint           zip_size,/* compressed page size in bytes, or 0 */
 
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        mem_heap_t*     heap);  /* in: heap where created */
 
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/************************************************************************
 
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Looks up a column prefix of an externally stored column. */
 
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UNIV_INLINE
 
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const byte*
 
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row_ext_lookup_ith(
 
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/*===============*/
 
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                                        /* out: column prefix, or NULL if
 
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                                        the column is not stored externally,
 
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                                        or pointer to field_ref_zero
 
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                                        if the BLOB pointer is unset */
 
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        const row_ext_t*        ext,    /* in/out: column prefix cache */
 
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        ulint                   i,      /* in: index of ext->ext[] */
 
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        ulint*                  len);   /* out: length of prefix, in bytes,
 
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                                        at most REC_MAX_INDEX_COL_LEN */
 
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/************************************************************************
 
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Looks up a column prefix of an externally stored column. */
 
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UNIV_INLINE
 
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const byte*
 
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row_ext_lookup(
 
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/*===========*/
 
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                                        /* out: column prefix, or NULL if
 
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                                        the column is not stored externally,
 
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                                        or pointer to field_ref_zero
 
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                                        if the BLOB pointer is unset */
 
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        const row_ext_t*        ext,    /* in: column prefix cache */
 
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        ulint                   col,    /* in: column number in the InnoDB
 
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                                        table object, as reported by
 
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                                        dict_col_get_no(); NOT relative to the
 
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                                        records in the clustered index */
 
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        ulint*                  len);   /* out: length of prefix, in bytes,
 
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                                        at most REC_MAX_INDEX_COL_LEN */
 
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/* Prefixes of externally stored columns */
 
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struct row_ext_struct{
 
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        ulint           n_ext;  /* number of externally stored columns */
 
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        const ulint*    ext;    /* col_no's of externally stored columns */
 
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        byte*           buf;    /* backing store of the column prefix cache */
 
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        ulint           len[1]; /* prefix lengths; 0 if not cached */
 
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};
 
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#ifndef UNIV_NONINL
 
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#include "row0ext.ic"
 
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#endif
 
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#endif