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46 lines
1.6 KiB
Text
46 lines
1.6 KiB
Text
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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 include/fsp0fsp.ic
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File space management
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Created 12/18/1995 Heikki Tuuri
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*******************************************************/
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/***********************************************************************//**
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Checks if a page address is an extent descriptor page address.
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@return TRUE if a descriptor page */
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UNIV_INLINE
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ibool
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fsp_descr_page(
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/*===========*/
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ulint zip_size,/*!< in: compressed page size in bytes;
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0 for uncompressed pages */
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ulint page_no)/*!< in: page number */
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{
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ut_ad(ut_is_2pow(zip_size));
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if (!zip_size) {
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return(UNIV_UNLIKELY((page_no & (UNIV_PAGE_SIZE - 1))
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== FSP_XDES_OFFSET));
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}
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return(UNIV_UNLIKELY((page_no & (zip_size - 1)) == FSP_XDES_OFFSET));
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}
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