420 lines
16 KiB
C
Executable File
420 lines
16 KiB
C
Executable File
#ifndef h_disk
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#define h_disk
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/******************************************************************************
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*
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* Declarations for UniVerse Database disk i/o functions
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*
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* Module %M% Version %I% Date %H%
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*
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* (c) Copyright 1998 Ardent Software Inc. - All Rights Reserved
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* This is unpublished proprietary source code of Ardent Software Inc.
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* The copyright notice above does not evidence any actual or intented
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* publication of such source code.
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*
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*******************************************************************************
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*
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* Maintenence log - insert most recent change descriptions at top
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*
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* Date.... GTAR# WHO Description.........................................
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* 04/12/99 24729 LPC Add addr_support flag to T30infonew structure.
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* 03/27/99 24729 RGA Create new T30TABNEW struct with T30infonew.
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* 03/18/99 24480 RGA Change Ihead64 to reflect new size.
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* 02/01/99 24414 LPC Ihead changed to support 32-bit and 64-bit files.
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* 12/14/98 23910 DTM Correct GET_NUM_UV_USERS to initialize value.
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* 10/14/98 23801 SAP Change copyrights.
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* 10/08/98 23765 CSM remove package count array from license table
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* 10/02/98 23765 CSM Add license structure to disk SM segment
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* 05/20/98 21718 LPC/WSM Add support for file suspension
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* 05/20/98 22647 LPC Move filehdr.h to bottom of list of include files
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* 05/12/98 22647 LPC Moved file header masks and offsets to filehdr.h
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* 04/16/98 22807 CSM New DBscan mode to release latch held by the scan
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* 12/19/97 22373 CSM New DBscanhash mode and return val for select-update
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* 09/16/97 19940 GMH Mark featr5 as in use
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* 05/29/97 20606 LAG Added UDRcontrol to DBsegment definition. Added
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* UDRflags and UDRunique for replication
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* 04/25/97 20510 AGM Add performance counters to DBsegment
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* 04/03/97 20380 DTM Bump up file rev for NLSsortmap/NLSsortcksum
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* 09/10/96 19161 CSM Bump up file rev for freechain freeflag check
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* 06/13/96 18582 CSM Bump up sica rev for Cascades
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* 05/30/96 18321 MGM Added Idx_multpart for SQL index type 25 files.
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* 05/22/96 18423 GMM Added inclusion of iflags.h
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* 05/20/96 18403 DTM Added information for deadlock detection
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* 05/12/96 18403 DTM Added information for deadlock/latch daemon
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* 03/11/96 18125 GMH Add bit tags for idxoff word
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* 01/19/96 17832 HSB Added SQLidxmap for SQL index type 25 files.
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* 08/23/95 17242 AGM Replace COMPUTER==WINNT test by MSWIN test
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* 05/26/95 15077 GMM Used up two spare slots from DBsegment
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* 06/01/95 16615 PVW Move lock related defines into LOCK.h
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* 05/26/95 16490 FRA Port to SGI (cleanup warnings)
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* 05/26/95 16538 DTM Made DBlk_copy/DBlk_init macros
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* 04/18/95 16490 FRA Port to SGI
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* 04/18/95 16489 FRA Port to IBM
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* 04/10/95 16244 GMM Changed ino_t to uv_ino_t
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* 04/11/95 15958 PVW Change LOCK_WAIT,NOWAIT and add LOCK_DEMOTE
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* 03/31/95 16221 AGM Rename LOG.h again!
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* 03/30/95 14633 DTM Added macros for semset/semclr operations
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* 03/03/95 15757 FRA Remove EXTERN DBSHMSZ and fix FCNTRL_H include
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* 02/27/95 16051 AGM Revert clog.h to LOG.h
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* 11/08/94 15741 EAP Added NLSmapcsum & NLSmapname header offsets
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* 12/05/94 15335 FRA Port to R60000 add SMP file locking
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* 12/01/94 15406 PVW Remove references to debug[rgf]lock
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* 11/16/94 15328 PVW Implement exclusive group latches
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* 11/17/94 15078 SJM Change include of LOG.h to clog.h
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* 10/21/94 15166 GMM Added USE_SELECT type 3 for NT, ifdefed out sem decs
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* 10/26/94 14073 TMC change comments reserving featr3 and featr4
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* 10/25/94 15040 PVW Add DBlatch structure
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* 10/06/94 15067 PVW Change definition of Pend_table elements
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* 08/24/94 14762 CSM Remove old logging system variables, replace staletbl
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* 08/22/94 14718 RM Added ISOWRITE latches which block on RU locks
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* 08/17/94 14623 PVW Add additional LOCKFAIL_ERRORS
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* 08/12/94 14656 JWT Increase readu entries to 64 bytes
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* 08/10/94 14623 RM Add DBlock_error
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* 08/05/94 14606 PVW Change file,group,record lock structures
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* 08/04/94 14519 PVW Implement group shared latch
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* 08/04/94 14582 PVW Change type argument in DBrsemv() call
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* 07/26/94 13897 SHK Port to RS6000
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* 07/21/94 13286 DTM Modified DBFLOGV to avoid conflicts with uvbackup/restore
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* 07/06/94 14371 RM Added MAXRLOCK
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* 07/01/94 14362 RM Added LOCK_ANYRL
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* 06/30/94 14312 PVW Changed DBrsemp() interface
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* 06/28/94 14239 WLG Added comments for the DB*MASK constants
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* 06/24/94 13837 PVW Correct define for LIST_DEADLOCK
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* 06/07/94 14173 CSM Add lsn,chkpoint,tlnum,inconsistent flag to hdr/desc
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* 05/26/94 13836 PVW Add defines for DBrecordlocked()
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* 05/25/94 13837 PVW Implement Release 8 Lock Manager changes
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* 05/09/94 13837 PVW Add defines for other filelock types
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* 03/28/94 13179 JKW Initialize R8 Logging
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* 04/01/94 12303 WLG Fix DBFMASK to be same as highest rev stamp.
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* 03/15/94 12303 ALC Bumped file rev for PI/open converted files
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* 03/15/94 12406 GMM Put in change to allow multi uniVerses
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* 03/01/94 13167 JWT Integrate Pyramid O_SYNC change
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* 01/06/94 12807 CSM Add a sica Revision constant DBFSICA
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* 09/15/93 10922 FAI Changed inode to type ino_t.
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* 09/10/93 12230 RM Bumped file revision level for item padding
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* 08/02/93 10978 SHK Port to DEC AXP
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* 07/31/93 11923 LPC Add defines for Distributed Files
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* 07/22/93 11853 RM Added DBscan defines
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* 03/09/93 11180 DPB Move UVschema to 524
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* 12/14/92 10716 LPC Add Partblock offset to file header
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* 09/28/92 10291 GMH Moved location of Bakoffset
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* 08/11/92 8806 JKW add log variables
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* 08/05/92 9956 RM Newstyle item padding changes
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* 07/29/92 6818 GMH Add bak locations.
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* 06/30/92 8806 JKW Add tx counter
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* 03/26/92 9341 RM Add read only files
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* 03/23/92 8802 JKW Add readl functionality
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* 03/18/92 8989 LPC New file revision level for improved dynamic files.
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* 03/17/92 9296 DPB added support for SQL SICAs.
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* 11/15/91 8348 JWT detect resize operational error
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* 11/14/91 8907 TMC use poll for microsec sleep (USE_SELECT==2)
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* 06/17/91 8485 JWT fix syntax error
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* 05/22/91 8376 JWT new authorization
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* 04/10/91 8220 KIS Change semaphore count to continue from 0s base.
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* 04/09/91 8214 FAI Add signature_table[] for LONG_pid.
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* 01/10/91 7868 TMC Allow network debugging to be turned on and off
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* 09/25/90 4944 TMC Change semaphore number to be same as shared memory
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* 08/29/90 7025 KIS Changed names of featrx vars & add TLOGSEM semaphore
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* 08/28/90 7025 KIS Reserve featr4 for logging, if I/Os allowed
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* 08/14/90 7025 KIS Reserve featr3 for logging roll forward active
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* 07/19/90 7025 KIS Reserve featr2 for logging active
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* 05/04/90 5192 JWT New pstat interface
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* 04/17/90 7025 KIS Add for transaction logger magic#
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* 04/10/90 7010 JWT Critical error handling improvments
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* 03/29/90 6972 JWT new semset logic
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* 01/04/89 6758 JWT HP ASM_sem support
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* 09/28/89 6342 JWT Lessen file descriptor overhead
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* 09/27/89 6318 JWT fix large record handling
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* 08/24/89 6072 JWT tunable disk locking
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* 04/12/89 5927 TJR alignment for seqioua
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* 03/03/89 5751 JWT Implement onsite tunable parameters
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* 12/05/88 5590 DTW add flag for catalog shared memory
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* 11/28/88 5208 JWT Multi-thread READU
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* 10/05/88 5234 TJR user configurable wide zero
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* 07/25/88 - - Maintenence log purged at 5.2.1, see release 5.1.10.
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*
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*****************************************************************************/
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#include "iflags.h"
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#include FCNTL_H
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#include "MFILE.h"
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#include "DBFILE.h"
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#include "PFILE.h"
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#include "plock.h"
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#include "btree.h"
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#include "tunables.h"
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#include "portstat.h"
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#include "c_LOG.h"
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#include "LOCK.h"
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#include "perfdata.h"
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#include "UDR_include.h"
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/******************************************************************************
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*
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* NOTE: filehdr.h MUST be the last header file included in the list.
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*
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*****************************************************************************/
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#include "filehdr.h"
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/******************************************************************************
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*
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* NOTE: All file header information (offsets, masks and macros) have
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* been moved to filehdr.h, which is included from this file.
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*
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*****************************************************************************/
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#ifdef MSWIN
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/*
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* do nothing for SYNC_ON. For SYNC_OFF decrement the fdesc sync flag
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* as this is usually called in a loop involving the sync flag
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*/
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#define F_SYNC_ON(mf) \
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{ \
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}
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#define F_SYNC_OFF(mf) \
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if (((MFILE*)mf)->sync_on) \
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{ \
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((MFILE*)mf)->sync_on -= 1; \
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}
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#else
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#define F_SYNC_ON(mf) \
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if (DBshmseg->tune_vals.syncalloc)\
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{ if(((MFILE*)mf)->sync_on == 0)\
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{ ((MFILE*)mf)->EBWSsave = fcntl(((MFILE*)mf)->fp,\
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F_GETFL, 0);\
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(void) fcntl(((MFILE*)mf)->fp, F_SETFL,\
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((MFILE*)mf)->EBWSsave | O_SYNC);\
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}\
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((MFILE*)mf)->sync_on++;\
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}
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#define F_SYNC_OFF(mf) \
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if (((MFILE*)mf)->sync_on && --((MFILE*)mf)->sync_on <= 0)\
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{ (void) fcntl(((MFILE*)mf)->fp, F_SETFL,\
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((MFILE*)mf)->EBWSsave & ~O_SYNC);\
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}
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#endif
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#if defined(UV_MULTI_INSTALL)
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extern int p_home_inode();
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#endif
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/* opcodes for DBscan */
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#define SCANinit 1
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#define SCANread 0
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#define SCANterm -1
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#define SCANrestart -2
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#define SCANgrpsync -5
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#define SCANrellatch -6
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/* return values for DBscanhash */
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#define SCANatgrpend -8
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#define Sector DISKBLK /* Physical disk sector size */
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#define _ALIGN W_ALIGN /* Word alignment mask (Boundary-1)*/
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#define absaddr 0 /* Specifies seek relative to base of file */
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#define filend 2 /* specifies seek relative to end of file */
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#define HASHES 19
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#define _SHMrev UVREV
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#if defined(UV_MULTI_INSTALL)
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#define _SHMKEY (0xacec0000 | (p_home_inode()))
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#else
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#define _SHMKEY (0xacec0000 | (_SHMrev))
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#endif
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#if defined(UV_MULTI_INSTALL)
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#define _DUMBKEY (0xace01234 | (p_home_inode()))
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#else
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#define _DUMBKEY 0xace01234
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#endif
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#define _USMFKEY _SHMKEY /* file lock semaphore unique key */
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struct t30table
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{ int dev;
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uv_ino_t inode;
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int refs;
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struct T30info filedata;
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};
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#define T30TAB struct t30table
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struct t30tablenew
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{ int dev;
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uv_ino_t inode;
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int refs;
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int addr_support;
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T30INFONEW filedata;
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};
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#define T30TABNEW struct t30tablenew
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#define JAVACLT 0x1
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#define MAXCONNPERUSR 10
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struct pidpkg
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{ pid_t srvpid; /* pid of srvr handling conn */
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unsigned int packages; /* packages in use */
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};
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#define PIDPKG struct pidpkg
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struct uvseat
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{ BITMAP spares:(8*sizeof(BITMAP)-5), /* Flags */
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conninuse:4, /* connectons in use for seat */
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objcrtdst:1; /* seat created by Obj server */
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char macaddr[13]; /* MacAddress of PC */
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char devname[25]; /* device name on LAN */
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char devsubkey[25]; /* device sub-key for N-tier */
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u_long ipaddr; /* IP address */
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int pkgsused; /* bitmap of packages used */
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};
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#define UVSEAT struct uvseat
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#define GET_NUM_UV_USERS(result) \
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{ \
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int nseat; \
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UVSEAT *lictbl; \
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/* make sure we start at 0 */ \
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result = 0;\
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lictbl = (UVSEAT*)((char*)DBshmseg + (int)DBshmseg->lic_table);\
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for (nseat=0; nseat < DBshmseg->tune_vals.max_logins; nseat++) \
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result += lictbl[nseat].conninuse; \
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}
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#define _UVXDT 12
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#define _UVCDT 12
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#define _UVRSZ 128
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#define _PTRBUF 128
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struct DBsegment
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{ /* These items are used to control access to universe */
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/* at startup time */
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int logcur; /* current login count */
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int logpk[MAX_PACKAGES]; /* # active users of each pkg */
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#if COMPUTER == SEQUOIA
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char fill[ 128 - (((MAX_PACKAGES+1)*sizeof(int)) % 128)];
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#endif
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/* Next are some global parameters for universe jobs */
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UVTUNE tune_vals; /* universe tunables */
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char *psegaddr; /* base addr for Pseg */
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char uvhome[_UVRSZ]; /* home directory of uv */
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#if COMPUTER == SEQUOIA
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char fill1[128 - (sizeof(UVTUNE) + sizeof(char*) +
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(_UVRSZ * sizeof(char))) %128];
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#endif
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Pblock Gprtblk; /* Global pblk template */
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char Gpbuf[_PTRBUF]; /* Work area for above */
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#if COMPUTER == SEQUOIA
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char fill2[128 - (sizeof(Pblock) + (_PTRBUF * sizeof(char))) % 128];
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#endif
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struct LG_data LGcontrol;
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struct UDR_data UDRcontrol;
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int shm; /* true if using shared catalog */
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int txid; /* unique tx id counter */
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int nt_svc_pid; /* pid of the NT UV service */
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int nt_svc_thread; /* NT service remote thread routine*/
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int uvdlockd_pid; /* pid of the deadlock daemon */
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int spare7, /* Reserved for future use... */
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spare8, /* Reserved for future use... */
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spare9, /* Reserved for future use... */
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spare10, /* Reserved for future use... */
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spare11, /* Reserved for future use... */
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spare12, /* Reserved for future use... */
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spare13, /* Reserved for future use... */
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spare14, /* Reserved for future use... */
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featr1, /* Semaphore debugging feature */
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featr2, /* uvnetd debugging feature */
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featr3, /* uvnetlicd debugging feature */
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featr4, /* uvnetlicd watchdog feature */
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featr5, /* rpc debugging feature */
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featr6, /* File suspension toggle */
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featr7, /* Reserved for future use... */
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featr8, /* Reserved for future use... */
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featr9, /* Reserved for future use... */
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featr10, /* Reserved for future use... */
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featr11, /* Reserved for future use... */
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featr12, /* Reserved for future use... */
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featr13, /* Reserved for future use... */
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featr14, /* Reserved for future use... */
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featr15, /* Reserved for future use... */
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featr16; /* Reserved for future use... */
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#if COMPUTER == SEQUOIA
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char fill3[128 - (34 * sizeof(int)) % 128];
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#endif
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struct Pstat pstatbuf;
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#if COMPUTER == SEQUOIA
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char fill3[128 - sizeof(struct Pstat) % 128];
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#endif
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#ifdef LONG_pid
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long signature_table[SIG_TAB_SIZ]; /* Table for hashed signatures*/
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#endif
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/* sems is a pointer to an array of ints used for test */
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/* and set assembly code semaphores. They are allocated */
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/* with single statement to stress the fact that they */
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/* must be contiguously allocated. The number semaphores */
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/* is a tunable parameter. The first PSEMNUM of these */
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/* are used for controlling access to the system filelock */
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/* table. The next GSEMNUM are used to control access to */
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/* the group and readu lock tables. The next PSEMNUM are */
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/* for the BASIC user process locks. Three extra */
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/* semaphores are allocated. The first is used for login */
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/* limiting. The second is for the external Pstat process*/
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/* feature. The third is for type 30 file support */
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/* The fourth is for transaction loggint support. */
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DBSEM *sems;
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/* Next is a data area use for the BASIC process locks */
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short *usrldat;
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/* The remainer is made up of structures used for disk */
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/* I/O concurrency control. */
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SGPLCK *grpslot; /* group lock tables */
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SFLLCK *filslot; /* file lock tables */
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FS_OWNERS *fsoslot; /* FS lock owners */
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WAITERS *fswaiters; /* FS lock waiters */
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SRULCK *rduslot; /* readu table chunks */
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READL_OWNERS *rdlslot; /* owners of shared locks */
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WAITERS *rdlwaiters; /* RU lock waiters */
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char *LG_data_buffer; /* buffer for log messages */
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char *UDR_data_buffer; /* buffer for data replication messages */
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UVSEAT *lic_table; /* licenses */
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PIDPKG *pidpkglst; /* pid, package list */
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pid_t *uvnetd_pids; /* uvnetd pids */
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T30TABNEW *t30data; /* type 30 FCBs */
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#ifdef UV_PERFORMANCE_DATA
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PERF_DATA perfdata; /* Performance data */
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#endif
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};
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/* Old Ihead define */
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/* #define Ihead (sizeof(DBDADDR)+sizeof(DBDADDR)+sizeof(DBFLAGW)) */
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/* New Ihead definitions */
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/* Ihead32 - Record block size for a UniVerse 32-bit file: */
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/* 4 byte forward link, 4 byte backward link, 4 byte flagword */
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/* Ihead64 - Record block size for a UniVerse 64-bit file: */
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/* 8 byte forward link, 8 byte backward link, 4 byte flagword,*/
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/* 4 byte pads (alignment) */
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#define Ihead32 12
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#define Ihead64 24
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#define keymrk (uchar) CHR_377
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#define DBilen(x) (*((int *) (x-sizeof(DBFLAGW)))^blink)
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#endif /* end of disk.h */
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