98 lines
4.4 KiB
C
98 lines
4.4 KiB
C
/*---
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This software is copyrighted by the Regents of the University of
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California, and other parties. The following terms apply to all files
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associated with the software unless explicitly disclaimed in
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individual files.
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The authors hereby grant permission to use, copy, modify, distribute,
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and license this software and its documentation for any purpose,
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provided that existing copyright notices are retained in all copies
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and that this notice is included verbatim in any distributions. No
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written agreement, license, or royalty fee is required for any of the
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authorized uses. Modifications to this software may be copyrighted by
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their authors and need not follow the licensing terms described here,
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provided that the new terms are clearly indicated on the first page of
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each file where they apply.
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IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
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FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
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DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
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NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND
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THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
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MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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GOVERNMENT USE: If you are acquiring this software on behalf of the
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U.S. government, the Government shall have only "Restricted Rights" in
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the software and related documentation as defined in the Federal
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Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you are
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acquiring the software on behalf of the Department of Defense, the
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software shall be classified as "Commercial Computer Software" and the
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Government shall have only "Restricted Rights" as defined in Clause
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252.227-7013 (c) (1) of DFARs. Notwithstanding the foregoing, the
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authors grant the U.S. Government and others acting in its behalf
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permission to use and distribute the software in accordance with the
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terms specified in this license.
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---*/
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/**
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* @file
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*
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* interface for dealing with raw pages
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*
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* This file provides a re-entrant interface for pages that do not
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* contain any metadata that LLADD understands.
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*
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* @ingroup LLADD_CORE
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* $Id$
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STRUCTURE OF A RAW PAGE
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<pre>
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+----------------------------------------------------------------------+
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| USABLE SPACE |
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+----------------------------------------------------------------------+
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</pre>
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*/
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#include <stasis/common.h>
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#include <stasis/page.h>
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#define units_from_start_raw(unit,page,count) (((unit*)(page->memAddr))+(count))
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/**
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@return a pointer to the buffer memory that stores this page.
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*/
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byte* rawPageGetData(int xid, Page * page);
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/**
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Inform the raw page implementation that the page is dirty.
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*/
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void rawPageSetData(int xid, lsn_t lsn, Page * page);
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lsn_t rawPageReadLSN(const Page * page);
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void rawPageWriteLSN(int xid, Page * page, lsn_t lsn);
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/** Should be called when a transaction that has touched this page commits. */
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void rawPageCommit(int xid);
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/** Should be called when a transaction that has touched this page aborts. */
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void rawPageAbort(int xid);
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