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/*****************************************************************************
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Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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/******************************************************
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File space management types
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Created May 26, 2009 Vasil Dimov
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*******************************************************/
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#include "fil0fil.h" /* for FIL_PAGE_DATA */
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/* If records are inserted in order, there are the following
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flags to tell this (their type is made byte for the compiler
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to warn if direction and hint parameters are switched in
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fseg_alloc_free_page): */
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#define FSP_UP ((byte)111) /* alphabetically upwards */
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#define FSP_DOWN ((byte)112) /* alphabetically downwards */
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#define FSP_NO_DIR ((byte)113) /* no order */
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/* File space extent size in pages */
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#define FSP_EXTENT_SIZE 64
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/* On a page of any file segment, data may be put starting from this offset: */
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#define FSEG_PAGE_DATA FIL_PAGE_DATA
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/* File segment header which points to the inode describing the file segment */
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typedef byte fseg_header_t;
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#define FSEG_HDR_SPACE 0 /* space id of the inode */
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#define FSEG_HDR_PAGE_NO 4 /* page number of the inode */
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#define FSEG_HDR_OFFSET 8 /* byte offset of the inode */
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#define FSEG_HEADER_SIZE 10
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/* Flags for fsp_reserve_free_extents */
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#define FSP_NORMAL 1000000
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#define FSP_UNDO 2000000
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#define FSP_CLEANING 3000000
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/* Number of pages described in a single descriptor page: currently each page
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description takes less than 1 byte; a descriptor page is repeated every
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this many file pages */
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#define XDES_DESCRIBED_PER_PAGE UNIV_PAGE_SIZE
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/* The space low address page map */
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/*--------------------------------------*/
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/* The following two pages are repeated
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every XDES_DESCRIBED_PER_PAGE pages in
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#define FSP_XDES_OFFSET 0 /* extent descriptor */
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#define FSP_IBUF_BITMAP_OFFSET 1 /* insert buffer bitmap */
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/* The ibuf bitmap pages are the ones whose
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page number is the number above plus a
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multiple of XDES_DESCRIBED_PER_PAGE */
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#define FSP_FIRST_INODE_PAGE_NO 2 /* in every tablespace */
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/* The following pages exist
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in the system tablespace (space 0). */
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#define FSP_IBUF_HEADER_PAGE_NO 3 /* in tablespace 0 */
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#define FSP_IBUF_TREE_ROOT_PAGE_NO 4 /* in tablespace 0 */
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/* The ibuf tree root page number in
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tablespace 0; its fseg inode is on the page
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number FSP_FIRST_INODE_PAGE_NO */
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#define FSP_TRX_SYS_PAGE_NO 5 /* in tablespace 0 */
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#define FSP_FIRST_RSEG_PAGE_NO 6 /* in tablespace 0 */
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#define FSP_DICT_HDR_PAGE_NO 7 /* in tablespace 0 */
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/*--------------------------------------*/
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#endif /* fsp0types_h */