head 1.10; access; symbols release_4_2:1.10 aix_ok:1.10 Version_2_1:1.7 Version_2:1.6 C_Demo_1:1.4; locks; strict; comment @ * @; 1.10 date 91.07.31.19.37.50; author mer; state Exp; branches; next 1.9; 1.9 date 91.07.29.07.09.18; author mer; state Exp; branches; next 1.8; 1.8 date 91.05.01.02.50.29; author cimarron; state Exp; branches; next 1.7; 1.7 date 90.08.17.08.53.40; author cimarron; state Exp; branches; next 1.6; 1.6 date 89.09.25.11.25.02; author cimarron; state Version_2; branches; next 1.5; 1.5 date 89.09.21.19.13.03; author hirohama; state Exp; branches; next 1.4; 1.4 date 89.09.05.17.10.34; author mao; state C_Demo_1; branches; next 1.3; 1.3 date 89.04.12.19.55.48; author dillon; state Exp; branches; next 1.2; 1.2 date 89.03.22.17.34.16; author muir; state Stab; branches; next 1.1; 1.1 date 89.01.17.05.54.41; author cimarron; state Exp; branches; next ; desc @@ 1.10 log @minor problem fixes @ text @/* ---------------------------------------------------------------- * FILE * pos.h * * DESCRIPTION * POSTGRES "position" definitions. * * A "position" ocnsists of "pageNumber ... offsetNumber" * where pageNumber occupies a number of page bits determined * by a PagePartition. * * IDENTIFICATION * $Header: RCS/pos.h,v 1.9 91/07/29 07:09:18 mer Exp Locker: mer $ * ---------------------------------------------------------------- */ #ifndef PosIncluded /* Include this file only once */ #define PosIncluded 1 #define POS_H "$Header: RCS/pos.h,v 1.9 91/07/29 07:09:18 mer Exp Locker: mer $" #include "tmp/c.h" #include "storage/part.h" #include "storage/pagenum.h" typedef bits16 PositionIdData; /* internal position identifier */ typedef PositionIdData *PositionId; /* position identifier */ /* ---------------- * support macros * ---------------- */ /* * PositionIdIsValid -- * True iff the position identifier is valid. */ #define PositionIdIsValid(positionId, partition) \ ((bool) (PointerIsValid(positionId) && \ (*(positionId) & OffsetNumberMask(partition)))) /* * PositionIdSetInValid -- * Make an invalid postion. */ #define PositionIdSetInvalid(positionId) *(positionId) = *(positionId) & 0x0 /* * PositionIdSet -- * Sets a position identifier to the specified value. */ #define PositionIdSet(positionId, partition, pageNumber, offsetNumber) \ Assert((pageNumber >> PagePartitionGetNumberOfPageBits(partition)) == 0); \ Assert((offsetNumber >> PagePartitionGetNumberOfOffsetBits(partition))==0);\ *(positionId) = offsetNumber | \ (pageNumber << PagePartitionGetNumberOfOffsetBits(partition)) /* * PositionIdGetPageNumber -- * Retrieve the page number from a position identifier. */ #define PositionIdGetPageNumber(positionId, partition) \ ((PageNumber) \ (0xffff & \ (*(positionId) >> PagePartitionGetNumberOfOffsetBits(partition)))) /* * PositionIdGetOffsetNumber -- * Retrieve the offset number from a position identifier. */ #define PositionIdGetOffsetNumber(positionId, partition) \ (AssertMacro(PositionIdIsValid(positionId, partition)) ? \ ((OffsetNumber) (*(positionId) & OffsetNumberMask(partition))) : \ (OffsetNumber) 0) #endif /* !defined(PosIncluded) */ @ 1.9 log @set invalid macro @ text @d13 1 a13 1 * $Header: /users/mer/postgres/src/lib/H/storage/RCS/pos.h,v 1.8 91/05/01 02:50:29 cimarron Exp Locker: mer $ d20 1 a20 1 #define POS_H "$Header: /users/mer/postgres/src/lib/H/storage/RCS/pos.h,v 1.8 91/05/01 02:50:29 cimarron Exp Locker: mer $" d45 1 a45 1 #define PositionIdSetInvalid(positionId) *(positionId) & 0x0 @ 1.8 log @round II of converting simple functions to macros + code cleaning in general @ text @d13 1 a13 1 * $Header$ d20 1 a20 1 #define POS_H "$Header: RCS/pos.h,v 1.7 90/08/17 08:53:40 cimarron Exp Locker: cimarron $" d40 6 @ 1.7 log @added pathnames to #include statements @ text @d1 5 a5 2 /* * pos.h -- d7 8 d20 1 a20 4 /* * Identification: */ #define POS_H "$Header: RCS/pos.h,v 1.6 89/09/25 11:25:02 cimarron Version_2 Locker: cimarron $" d29 4 d37 3 a39 6 extern bool PositionIdIsValid ARGS(( PositionId positionId, PagePartition partition )); d45 5 a49 8 extern void PositionIdSet ARGS(( PositionId positionId, PagePartition partition, PageNumber pageNumber, OffsetNumber offsetNumber )); d55 4 a58 6 extern PageNumber PositionIdGetPageNumber ARGS(( PositionId positionId, PagePartition partition )); d64 4 a67 6 extern OffsetNumber PositionIdGetOffsetNumber ARGS(( PositionId positionId, PagePartition partition )); @ 1.6 log @moved dynamic symbol stuff to syms.h @ text @d12 1 a12 1 #define POS_H "$Header: RCS/pos.h,v 1.5 89/09/21 19:13:03 hirohama Exp $" d14 3 a16 10 #ifndef C_H #include "c.h" #endif #ifndef PART_H # include "part.h" #endif #ifndef PAGENUM_H # include "pagenum.h" #endif @ 1.5 log @added ...SYMBOLS declarations miscellaneous cleanup @ text @d12 1 a12 1 #define POS_H "$Header: RCS/pos.h,v 1.4 89/09/05 17:10:34 mao C_Demo_1 Locker: hirohama $" a72 6 #define POS_SYMBOLS \ SymbolDecl(PositionIdIsValid, "_PositionIdIsValid"), \ SymbolDecl(PositionIdSet, "_PositionIdSet"), \ SymbolDecl(PositionIdGetPageNumber, "_PositionIdGetPageNumber"), \ SymbolDecl(PositionIdGetOffsetNumber, "_PositionIdGetOffsetNumber") @ 1.4 log @Working version of C-only demo @ text @a3 3 * * Identification: * $Header: /usr6/postgres/mao/postgres/src/lib/H/RCS/pos.h,v 1.3 89/04/12 19:55:48 dillon Exp $ d6 1 a6 1 #ifndef PosIncluded /* Include this file only once. */ d9 5 d18 6 a23 2 #include "part.h" #include "pagenum.h" d73 6 @ 1.3 log @c.h @ text @d6 1 a6 1 * $Header: /usr6/postgres/dillon/ptree/src/lib/H/RCS/pos.h,v 1.2 89/03/22 17:34:16 muir Stab $ @ 1.2 log @copyright removal @ text @d6 1 a6 1 * $Header: /usr6/postgres/muir/postgres/src/lib/H/RCS/pos.h,v 1.1 89/01/17 05:54:41 cimarron Exp $ d12 1 d14 1 @ 1.1 log @Initial revision @ text @a0 27 ; /* ; * ; * POSTGRES Data Base Management System ; * ; * Copyright (c) 1988 Regents of the University of California ; * ; * Permission to use, copy, modify, and distribute this software and its ; * documentation for educational, research, and non-profit purposes and ; * without fee is hereby granted, provided that the above copyright ; * notice appear in all copies and that both that copyright notice and ; * this permission notice appear in supporting documentation, and that ; * the name of the University of California not be used in advertising ; * or publicity pertaining to distribution of the software without ; * specific, written prior permission. Permission to incorporate this ; * software into commercial products can be obtained from the Campus ; * Software Office, 295 Evans Hall, University of California, Berkeley, ; * Ca., 94720 provided only that the the requestor give the University ; * of California a free licence to any derived software for educational ; * and research purposes. The University of California makes no ; * representations about the suitability of this software for any ; * purpose. It is provided "as is" without express or implied warranty. ; * ; */ d6 1 a6 1 * $Header: pos.h,v 1.1 88/11/11 16:37:20 postgres Exp $ @