1/*****************************************************************************
2
3Copyright (c) 1995, 2009, Oracle and/or its affiliates. All Rights Reserved.
4
5This program is free software; you can redistribute it and/or modify
6it under the terms of the GNU General Public License, version 2.0,
7as published by the Free Software Foundation.
8
9This program is also distributed with certain software (including
10but not limited to OpenSSL) that is licensed under separate terms,
11as designated in a particular file or component or in included license
12documentation.  The authors of MySQL hereby grant you an additional
13permission to link the program and your derivative works with the
14separately licensed software that they have included with MySQL.
15
16This program is distributed in the hope that it will be useful,
17but WITHOUT ANY WARRANTY; without even the implied warranty of
18MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19GNU General Public License, version 2.0, for more details.
20
21You should have received a copy of the GNU General Public License along with
22this program; if not, write to the Free Software Foundation, Inc.,
2351 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
24
25*****************************************************************************/
26
27/******************************************************************//**
28@file include/fut0fut.ic
29File-based utilities
30
31Created 12/13/1995 Heikki Tuuri
32***********************************************************************/
33
34#include "srv0srv.h"
35#include "sync0rw.h"
36#include "buf0buf.h"
37
38/********************************************************************//**
39Gets a pointer to a file address and latches the page.
40@return pointer to a byte in a frame; the file page in the frame is
41bufferfixed and latched */
42UNIV_INLINE
43byte*
44fut_get_ptr(
45/*========*/
46	ulint		space,	/*!< in: space id */
47	ulint		zip_size,/*!< in: compressed page size in bytes
48				or 0 for uncompressed pages */
49	fil_addr_t	addr,	/*!< in: file address */
50	ulint		rw_latch, /*!< in: RW_S_LATCH, RW_X_LATCH */
51	mtr_t*		mtr)	/*!< in: mtr handle */
52{
53	buf_block_t*	block;
54	byte*		ptr;
55
56	ut_ad(addr.boffset < UNIV_PAGE_SIZE);
57	ut_ad((rw_latch == RW_S_LATCH) || (rw_latch == RW_X_LATCH));
58
59	block = buf_page_get(space, zip_size, addr.page, rw_latch, mtr);
60
61	SRV_CORRUPT_TABLE_CHECK(block, return(0););
62
63	ptr = buf_block_get_frame(block) + addr.boffset;
64
65	buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK);
66
67	return(ptr);
68}
69