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+/*****************************************************************************
+
+Copyright (c) 1997, 2009, Innobase Oy. 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., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+
+*****************************************************************************/
+
+/**************************************************//**
+@file include/row0purge.h
+Purge obsolete records
+
+Created 3/14/1997 Heikki Tuuri
+*******************************************************/
+
+#ifndef row0purge_h
+#define row0purge_h
+
+#include "univ.i"
+#include "data0data.h"
+#include "btr0types.h"
+#include "btr0pcur.h"
+#include "dict0types.h"
+#include "trx0types.h"
+#include "que0types.h"
+#include "row0types.h"
+
+/********************************************************************//**
+Creates a purge node to a query graph.
+@return own: purge node */
+UNIV_INTERN
+purge_node_t*
+row_purge_node_create(
+/*==================*/
+ que_thr_t* parent, /*!< in: parent node, i.e., a thr node */
+ mem_heap_t* heap); /*!< in: memory heap where created */
+/***********************************************************//**
+Does the purge operation for a single undo log record. This is a high-level
+function used in an SQL execution graph.
+@return query thread to run next or NULL */
+UNIV_INTERN
+que_thr_t*
+row_purge_step(
+/*===========*/
+ que_thr_t* thr); /*!< in: query thread */
+
+/* Purge node structure */
+
+struct purge_node_struct{
+ que_common_t common; /*!< node type: QUE_NODE_PURGE */
+ /*----------------------*/
+ /* Local storage for this graph node */
+ roll_ptr_t roll_ptr;/* roll pointer to undo log record */
+ trx_undo_rec_t* undo_rec;/* undo log record */
+ trx_undo_inf_t* reservation;/* reservation for the undo log record in
+ the purge array */
+ undo_no_t undo_no;/* undo number of the record */
+ ulint rec_type;/* undo log record type: TRX_UNDO_INSERT_REC,
+ ... */
+ btr_pcur_t pcur; /*!< persistent cursor used in searching the
+ clustered index record */
+ ibool found_clust;/* TRUE if the clustered index record
+ determined by ref was found in the clustered
+ index, and we were able to position pcur on
+ it */
+ dict_table_t* table; /*!< table where purge is done */
+ ulint cmpl_info;/* compiler analysis info of an update */
+ upd_t* update; /*!< update vector for a clustered index
+ record */
+ dtuple_t* ref; /*!< NULL, or row reference to the next row to
+ handle */
+ dtuple_t* row; /*!< NULL, or a copy (also fields copied to
+ heap) of the indexed fields of the row to
+ handle */
+ dict_index_t* index; /*!< NULL, or the next index whose record should
+ be handled */
+ mem_heap_t* heap; /*!< memory heap used as auxiliary storage for
+ row; this must be emptied after a successful
+ purge of a row */
+};
+
+#ifndef UNIV_NONINL
+#include "row0purge.ic"
+#endif
+
+#endif