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60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/*****************************************************************************
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Copyright (c) 1994, 2016, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2018, 2020, MariaDB Corporation.
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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.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/ha0ha.h
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The hash table interface for the adaptive hash index
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Created 8/18/1994 Heikki Tuuri
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*******************************************************/
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#ifndef ha0ha_h
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#define ha0ha_h
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#include "hash0hash.h"
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#include "page0types.h"
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#include "buf0types.h"
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#include "rem0types.h"
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#ifdef BTR_CUR_HASH_ADAPT
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/*************************************************************//**
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Looks for an element in a hash table.
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@return pointer to the data of the first hash table node in chain
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having the fold number, NULL if not found */
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UNIV_INLINE
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const rec_t*
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ha_search_and_get_data(
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/*===================*/
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hash_table_t* table, /*!< in: hash table */
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ulint fold); /*!< in: folded value of the searched data */
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/** The hash table external chain node */
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struct ha_node_t {
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ulint fold; /*!< fold value for the data */
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ha_node_t* next; /*!< next chain node or NULL if none */
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#if defined UNIV_AHI_DEBUG || defined UNIV_DEBUG
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buf_block_t* block; /*!< buffer block containing the data, or NULL */
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#endif /* UNIV_AHI_DEBUG || UNIV_DEBUG */
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const rec_t* data; /*!< pointer to the data */
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};
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#include "ha0ha.inl"
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#endif /* BTR_CUR_HASH_ADAPT */
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#endif
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