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/*****************************************************************************
Copyright (c) 1995, 2014, Oracle and/or its affiliates. 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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/******************************************************************//**
@file include/fut0lst.ic
File-based list utilities
Created 11/28/1995 Heikki Tuuri
***********************************************************************/
#include "buf0buf.h"
/********************************************************************//**
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 */
{
ut_ad(faddr && mtr);
ut_ad(mtr_memo_contains_page_flagged(mtr, faddr,
MTR_MEMO_PAGE_X_FIX
| MTR_MEMO_PAGE_SX_FIX));
ut_a(addr.page == FIL_NULL || addr.boffset >= FIL_PAGE_DATA);
ut_a(ut_align_offset(faddr, srv_page_size) >= FIL_PAGE_DATA);
mlog_write_ulint(faddr + FIL_ADDR_PAGE, addr.page, MLOG_4BYTES, mtr);
mlog_write_ulint(faddr + FIL_ADDR_BYTE, addr.boffset,
MLOG_2BYTES, mtr);
}
/********************************************************************//**
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 */
{
fil_addr_t addr;
ut_ad(faddr && mtr);
addr.page = mtr_read_ulint(faddr + FIL_ADDR_PAGE, MLOG_4BYTES, mtr);
addr.boffset = mtr_read_ulint(faddr + FIL_ADDR_BYTE, MLOG_2BYTES,
mtr);
ut_a(addr.page == FIL_NULL || addr.boffset >= FIL_PAGE_DATA);
ut_a(ut_align_offset(faddr, srv_page_size) >= FIL_PAGE_DATA);
return(addr);
}
/********************************************************************//**
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 */
{
ut_ad(mtr_memo_contains_page_flagged(mtr, base,
MTR_MEMO_PAGE_X_FIX
| MTR_MEMO_PAGE_SX_FIX));
mlog_write_ulint(base + FLST_LEN, 0, MLOG_4BYTES, mtr);
flst_zero_addr(base + FLST_FIRST, mtr);
flst_zero_addr(base + FLST_LAST, mtr);
}
/** Get the length of a list.
@param[in] base base node
@return length */
UNIV_INLINE
uint32_t
flst_get_len(
const flst_base_node_t* base)
{
return(mach_read_from_4(base + FLST_LEN));
}
/********************************************************************//**
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 */
{
return(flst_read_addr(base + FLST_FIRST, mtr));
}
/********************************************************************//**
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 */
{
return(flst_read_addr(base + FLST_LAST, mtr));
}
/********************************************************************//**
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 */
{
return(flst_read_addr(node + FLST_NEXT, mtr));
}
/********************************************************************//**
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 */
{
return(flst_read_addr(node + FLST_PREV, mtr));
}
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