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/*****************************************************************************

Copyright (c) 1995, 2023, Oracle and/or its affiliates.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.

This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation.  The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.

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, version 2.0, 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.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA

*****************************************************************************/

/******************************************************************//**
@file include/fut0lst.h
File-based list utilities

Created 11/28/1995 Heikki Tuuri
***********************************************************************/

#ifndef fut0lst_h
#define fut0lst_h

#ifndef UNIV_INNOCHECKSUM

#include "univ.i"

#include "fil0fil.h"
#include "mtr0mtr.h"


/* The C 'types' of base node and list node: these should be used to
write self-documenting code. Of course, the sizeof macro cannot be
applied to these types! */

typedef	byte	flst_base_node_t;
typedef	byte	flst_node_t;

/* The physical size of a list base node in bytes */
#define	FLST_BASE_NODE_SIZE	(4 + 2 * FIL_ADDR_SIZE)
#endif /* !UNIV_INNOCHECKSUM */

/* The physical size of a list node in bytes */
#define	FLST_NODE_SIZE		(2 * FIL_ADDR_SIZE)

#if !defined UNIV_HOTBACKUP && !defined UNIV_INNOCHECKSUM
/********************************************************************//**
Initializes a list base node. */
UNIV_INLINE
void
flst_init(
/*======*/
	flst_base_node_t*	base,	/*!< in: pointer to base node */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Adds a node as the last node in a list. */
void
flst_add_last(
/*==========*/
	flst_base_node_t*	base,	/*!< in: pointer to base node of list */
	flst_node_t*		node,	/*!< in: node to add */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Adds a node as the first node in a list. */
void
flst_add_first(
/*===========*/
	flst_base_node_t*	base,	/*!< in: pointer to base node of list */
	flst_node_t*		node,	/*!< in: node to add */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Inserts a node after another in a list. */
void
flst_insert_after(
/*==============*/
	flst_base_node_t*	base,	/*!< in: pointer to base node of list */
	flst_node_t*		node1,	/*!< in: node to insert after */
	flst_node_t*		node2,	/*!< in: node to add */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Inserts a node before another in a list. */
void
flst_insert_before(
/*===============*/
	flst_base_node_t*	base,	/*!< in: pointer to base node of list */
	flst_node_t*		node2,	/*!< in: node to insert */
	flst_node_t*		node3,	/*!< in: node to insert before */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Removes a node. */
void
flst_remove(
/*========*/
	flst_base_node_t*	base,	/*!< in: pointer to base node of list */
	flst_node_t*		node2,	/*!< in: node to remove */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */

/** Get the length of a list.
@param[in]	base	base node
@return length */
UNIV_INLINE
ulint
flst_get_len(
	const flst_base_node_t*	base);
/********************************************************************//**
Gets list first node address.
@return file address */
UNIV_INLINE
fil_addr_t
flst_get_first(
/*===========*/
	const flst_base_node_t*	base,	/*!< in: pointer to base node */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Gets list last node address.
@return file address */
UNIV_INLINE
fil_addr_t
flst_get_last(
/*==========*/
	const flst_base_node_t*	base,	/*!< in: pointer to base node */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Gets list next node address.
@return file address */
UNIV_INLINE
fil_addr_t
flst_get_next_addr(
/*===============*/
	const flst_node_t*	node,	/*!< in: pointer to node */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Gets list prev node address.
@return file address */
UNIV_INLINE
fil_addr_t
flst_get_prev_addr(
/*===============*/
	const flst_node_t*	node,	/*!< in: pointer to node */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Writes a file address. */
UNIV_INLINE
void
flst_write_addr(
/*============*/
	fil_faddr_t*	faddr,	/*!< in: pointer to file faddress */
	fil_addr_t	addr,	/*!< in: file address */
	mtr_t*		mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Reads a file address.
@return file address */
UNIV_INLINE
fil_addr_t
flst_read_addr(
/*===========*/
	const fil_faddr_t*	faddr,	/*!< in: pointer to file faddress */
	mtr_t*			mtr);	/*!< in: mini-transaction handle */
/********************************************************************//**
Validates a file-based list.
@return TRUE if ok */
ibool
flst_validate(
/*==========*/
	const flst_base_node_t*	base,	/*!< in: pointer to base node of list */
	mtr_t*			mtr1);	/*!< in: mtr */
/********************************************************************//**
Prints info of a file-based list. */
void
flst_print(
/*=======*/
	const flst_base_node_t*	base,	/*!< in: pointer to base node of list */
	mtr_t*			mtr);	/*!< in: mtr */


#ifndef UNIV_NONINL
#include "fut0lst.ic"
#endif

#endif /* !UNIV_HOTBACKUP && !UNIV_INNOCHECKSUM*/

#endif

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