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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