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- /*
- * $RCSfile: undo.h,v $
- * $Revision: 1.1.1.1 $
- * $Date: 1996/05/04 21:55:46 $
- */
- #ifndef __UNDO_H__
- #define __UNDO_H__
-
- /**********************************************************************
- * EXODUS Database Toolkit Software
- * Copyright (c) 1991 Computer Sciences Department, University of
- * Wisconsin -- Madison
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * THE COMPUTER SCIENCES DEPARTMENT OF THE UNIVERSITY OF WISCONSIN --
- * MADISON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.
- * THE DEPARTMENT DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
- * WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * The EXODUS Project Group requests users of this software to return
- * any improvements or extensions that they make to:
- *
- * EXODUS Project Group
- * c/o David J. DeWitt and Michael J. Carey
- * Computer Sciences Department
- * University of Wisconsin -- Madison
- * Madison, WI 53706
- *
- * or exodus@cs.wisc.edu
- *
- * In addition, the EXODUS Project Group requests that users grant the
- * Computer Sciences Department rights to redistribute these changes.
- **********************************************************************/
- /*
- * define a record that hold information concerning missing updates
- * to page pages.
- */
- typedef struct _MissingUpdateInfo {
-
- LISTELEMENT list; /* list of free/used tables */
- LIST *table; /* pointer to a malloced table */
- MAGIC magic;
- } MISSINGUPDATEINFO;
-
-
- #define MISSINGUPDATEINFO_MAGIC 0x576435ab
-
- /*
- * Define entries in the missing update table
- */
- typedef struct {
-
- PID pid;
- LRC lrc;
- LRC firstLRC; /* first operation not done */
- LSN firstLSN; /* first operation not done */
- LISTELEMENT list;
- PAGETYPE pageType;
-
- } MISSINGUPDATE;
-
-
- /*
- * define the magic checking macros
- */
- #if MAGIC_CHECKING IS_ENABLED
-
-
- #define INIT_MISSINGUPDATEINFO_MAGIC(_missingUpdateInfo) \
- (_missingUpdateInfo)->magic = MISSINGUPDATEINFO_MAGIC;
-
- #define CHECK_MISSINGUPDATEINFO_MAGIC(_missingUpdateInfo) \
- \
- if ((_missingUpdateInfo)->magic != MISSINGUPDATEINFO_MAGIC) { \
- \
- SM_ERROR(TYPE_FATAL, esmINTERNAL); \
- }
-
-
- #else
-
- #define INIT_MISSINGUPDATEINFO_MAGIC(_missingUpdateInfo)
- #define CHECK_MISSINGUPDATEINFO_MAGIC(_missingUpdateInfo)
-
- #endif
- #endif __UNDO_H__
-