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Viewing changes to storage/innobase/row/row0ext.c

  • Committer: Mark Atwood
  • Date: 2009-03-04 01:02:00 UTC
  • mto: (968.2.20 mordred)
  • mto: This revision was merged to the branch mainline in revision 971.
  • Revision ID: me@mark.atwood.name-20090304010200-t1n4xxdoil2yae9a
add gearman logging plugin

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storage/innobase/row/row0ext.c
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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., 51 Franklin
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St, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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/**************************************************//**
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@file row/row0ext.c
 
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/******************************************************
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Caching of externally stored column prefixes
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(c) 2006 Innobase Oy
 
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Created September 2006 Marko Makela
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*******************************************************/
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#include "btr0cur.h"
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/********************************************************************//**
 
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/************************************************************************
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Fills the column prefix cache of an externally stored column. */
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static
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void
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row_ext_cache_fill(
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/*===============*/
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        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           zip_size,/*!< compressed page size in bytes, or 0 */
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        const dfield_t* dfield) /*!< in: data field */
 
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        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           zip_size,/* compressed page size in bytes, or 0 */
 
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        const dfield_t* dfield) /* in: data field */
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{
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        const byte*     field   = static_cast<const byte *>(dfield_get_data(dfield));
 
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        const byte*     field   = dfield_get_data(dfield);
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        ulint           f_len   = dfield_get_len(dfield);
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        byte*           buf     = ext->buf + i * REC_MAX_INDEX_COL_LEN;
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        }
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}
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/********************************************************************//**
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Creates a cache of column prefixes of externally stored columns.
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@return own: column prefix cache */
 
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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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        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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                                /* 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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        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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        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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        ulint           i;
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        row_ext_t*      ret = static_cast<row_ext_t *>(mem_heap_alloc(heap, (sizeof *ret)
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                                             + (n_ext - 1) * sizeof ret->len));
 
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        row_ext_t*      ret = mem_heap_alloc(heap, (sizeof *ret)
 
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                                             + (n_ext - 1) * sizeof ret->len);
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        ut_ad(ut_is_2pow(zip_size));
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        ut_ad(zip_size <= UNIV_PAGE_SIZE);
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        ret->n_ext = n_ext;
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        ret->ext = ext;
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        ret->buf = static_cast<byte *>(mem_heap_alloc(heap, n_ext * REC_MAX_INDEX_COL_LEN));
 
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        ret->buf = mem_heap_alloc(heap, n_ext * REC_MAX_INDEX_COL_LEN);
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#ifdef UNIV_DEBUG
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        memset(ret->buf, 0xaa, n_ext * REC_MAX_INDEX_COL_LEN);
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        UNIV_MEM_ALLOC(ret->buf, n_ext * REC_MAX_INDEX_COL_LEN);