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10,7/rms10/rmssrc/rmsput.b36
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MODULE PUT =
BEGIN
GLOBAL BIND PUTV = 1^24 + 0^18 + 11; !EDIT DATE: 6-APR-77
%([
FUNCTION: THIS MODULE CONTAINS ALL ROUTINES WHICH PROCESS
THE $PUT MACRO FOR RMS-20.
AUTHOR: S. BLOUNT
THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY ONLY BE USED
OR COPIED IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE.
!COPYRIGHT (C) 1977, 1979 BY DIGITAL EQUIPMENT CORPORATION
********** TABLE OF CONTENTS **************
ROUTINE FUNCTION
======= ========
$PUT PROCESSOR FOR $PUT MACRO
PUTASC "PUT"'S RECORD TO ASCII FILE
PUTSQR "PUT"'S RECORD TO A SEQUENTIAL OR RELATIVE FILE
PUTREC PERFORMS PHYSICAL TRANSFER OF RECORD
PUT "PUT"'S RECORD TO INDEXED FILE
SETPUT SET-UP FOR $PUT TO INDEXED FILE
REVISION HISTORY:
EDIT DATE WHO PURPOSE
==== ==== === =======
1 7-OCT-76 SEB MISC OPTIMIZATIONS
2 28-OCT-76 SEB ADD RELEASECURRENTBUCKET MACRO
3 8-NOV-76 SEB FIX BUG IN PUT TO REL FILE
4 23-NOV-76 SEB FIX CHECK OF VALID BIT
5 7-FEB-77 SEB FIX MAXRECORDSIZE COMP. IN SETPUT
SO TOO BIG RECORDS ARE DETECTED
6 11-MAR-77 SEB PUT CODE IN FOR CHECK BYTE
7 23-MAR-77 SEB UNDO EDIT 6
8 5-APR-77 SEB DON'T BLT FULL SIZE OF RELATIVE RECORD
9 6-APR-77 SEB CHANGE HYBYTE TO RST FIELD
*************************************************
* *
* NEW REVISION HISTORY *
* *
*************************************************
****************** Start RMS-10 V1.1 *********************
********************* TOPS-10 ONLY ***********************
PRODUCT MODULE SPR
EDIT EDIT QAR DESCRIPTION
====== ====== ===== ===========
100 10 Dev Make declarations for routine names
be EXTERNAL ROUTINE so RMS will compile
under BLISS V4 (RMT, 10/22/85).
103 11 Dev Indicate that a page has been updated before
starting the next file page so that RMS
will only do deferred writing when that option
is enabled. (RMT, 12/2/85)
***** END OF REVISION HISTORY *****
])%
FORWARD ROUTINE PUTSQR,
PUTREC: novalue; ! FORWARD DECLARATONS
EXTERNAL ROUTINE
CHKDUP, ! CHECK DUPLICATE RECORDS
! CHKMAP,
CKEYKK, ! COMPARE KEY STRINGS
CRASH,
DUMP,
CLEANUP, ! CLEAN UP AFTER A BAD PUT OPERATION
FOLLOWPATH, ! FOLLOW THE INDEX PATH
INSRTUDR, ! INSERT A USER DATA RECORD
INSRTSIDR, ! INSERT A SEC INDEX DATA RECORD
IDXUPDATE, ! UPDATE THE INDEX STRUCTURE
MAKIDX, ! CREATE AN INDEX STRUCTURE
MOVEKEY, ! MOVE A KEY STRING TO A BUFFER
NUMBERTORFA,
PUTBKT, ! PUT A BUCKET
SETNRP, ! SET UP THE NEXT RECORD POINTER
GTBYTE,
LOCKIT,
MOVEREC,
! MOVESTRING,
NOSPAN,
PUTASCII,
PUTLSN,
REMOVRECORD, ! TAKE UDR OUT OF FILE ON ERROR
RSETUP;
EXTERNAL
TBUFFER; ! TEMP BUFFER FOR KEY STRINGS
%([ EXTERNAL ERROR MESSAGES INVOKED WITHIN THIS MODULE ])%
EXTERNAL
MSGFAILURE, ! ROUTINE FAILURE
! MSGUNLOCKED, ! RECORD IS UNLOCKED
MSGCANTGETHERE; ! LOGIC BUG
! MSGASCII; ! ASCII FILE NOT DETECTED
REQUIRE 'RMSREQ';
EXTDECLARATIONS;
! $PUT
! ====
! PROCESSOR FOR $PUT MACRO
! INPUT:
! ADDRESS OF USER RECORD BLOCK (RAB)
! ADDRESS OF USER ERROR ROUTINE
! OUTPUT:
! <STATUS FIELD OF USER RAB>
! ROUTINES CALLED:
! PUTASCII
! PUTSQR
! PUTIDX
! RSETUP
! FORMAT OF THE $PUT MACRO:
!
! $PUT <RAB-ADDRESS> [,<ERROR-ADDRESS>]
!
! RAB FIELDS USED AS INPUT BY $PUT:
!
! ISI INTERNAL STREAM IDENTIFIER
! KBF KEY BUFFER ADDRESS (RELATIVE/INDEXED)
! KSZ SIZE OF KEY IN KEY BUFFER (INDEXED)
! LSN LINE-SEQUENCE NUMBER (LSA)
! RAC RECORD ACCESS
! RBF ADDRESS OF USER RECORD BUFFER
! ROP RECORD ACCESS OPTIONS
! RSZ SIZE OF RECORD
!
! RAB FIELDS WHICH ARE SET BY $PUT:
!
! BKT RECORD NUMBER OF CURRENT RECORD (RELATIVE)
! RBF ADDRESS OF BUFFER FOR NEXT RECORD (-11 COMPATIBILITY)
! RFA RECORD'S FILE ADDRESS
! STS COMPLETION STATUS CODE
! STV ADDITIONAL STATUS INFORMATION
GLOBAL ROUTINE %NAME('$PUT') ( BLOCK, ERRORRETURN ) =
BEGIN
ARGUMENT (BLOCK,BASEADD);
ARGUMENT (ERRORRETURN,BASEADD); ! ADDRESS OF USER ERROR ROUTINE
REGISTER
ERRORCODE; ! USED TO SAVE AN ERROR CODE
%IF INDX %THEN
EXTERNAL ROUTINE
PUTIDX;
%FI
RMSENTRY ( $PUT );
%([ FETCH INPUT ARGS ])%
RAB = .BLOCK; ! GET ADDRESS OF RAB
ERRADR = .ERRORRETURN; ! AND USER ERROR ADDRESS
CALLRSETUP ( PCI ( AXPUT )); ! DO OTHER STUFF
%(*** ERROR PROCESSING FOR $PUT MACRO ***
* *
* THE FOLLOWING ERRORS ARE CHECKED: *
* 1. RFA ADDRESSING IS ILLEGAL *
* 2. RECORD-SIZE < = MAX-REC-SIZE *
* 3. RECORD BUFFER MUST BE PROPER *
* 4. RECORD-SIZE FOR FIXED-LENGTH RECORDS *
* *
* *
*************************************************
])%
ERRORCODE = ZERO; ! ASSUME NO ERROR
IF RFAADR THEN ERRORCODE = ER$RAC; ! DONT ALLOW RFA ADDRESSING
IF ( .FST [ FSTMRS ] ISNT ZERO ) ! IF THERE IS A MAX RECORD SIZE...
THEN IF ( .RAB [ RABRSZ ] GTR .FST [ FSTMRS ] )
THEN ERRORCODE = ER$RSZ; ! RECORD IF BIGGER THAN MAXIMUM
IF .RAB [ RABRBF ] LEQ MINUSERBUFF THEN ERRORCODE = ER$RBF; ! CHECK BUFFER
IF FIXEDLENGTH
THEN
BEGIN
IF .RAB [ RABRSZ ] ISNT .FST [ FSTMRS ] THEN ERRORCODE = ER$RSZ
END;
%([ WAS THERE AN ERROR? ])%
IF .ERRORCODE ISNT ZERO
THEN
BEGIN
USRSTS = .ERRORCODE;
USEXITERR ! EXIT FROM RMS
END;
%([ ***** END OF ERROR PROCESSING FOR $PUT ****** ])%
%([ DISPATCH TO A ROUTINE TO WRITE A RECORD FOR EACH FILE ORGANIZATION ])%
CASE FILEORG FROM 0 TO 4 OF
SET
[0]: %( ASCII )% CALLPUTASCII; ! ASCII FILE
[1]: %( SEQ )% CALLPUTSQR; ! SEQUENTIAL FILE
[2]: %( REL )% CALLPUTSQR; ! RELATIVE FILE
[3]: %( INDX )% %IF INDX %THEN
CALLPUTIDX; !INDEXED FILE
%FI
[4]:
TES; %( END OF CASE FILEORG )%
%([ SET THE "SUCCESS" BIT AND REMEMBER THAT THIS WAS A $PUT ])%
SETSUCCESS; ! SET SUCCESS BIT AND LAST-OPER
%([ RETURN THE RFA OF THIS RECORD TO THE USER ])%
RAB [ RABRFA ] = .RST [ RSTDATARFA ];
%([ EXIT TO THE USER ])%
USEREXIT %( EXIT TO USER )%
END; %( OF $PUT PROCESSOR )%
! PUTSQR
! ======
! THIS ROUTINE PROCESSES THE $PUT VERB TO A SEQUENTIAL OR RELATIVE
! FILE
! INPUT:
! <NONE>
! OUTPUT:
! <NONE>
!
GLOBAL ROUTINE PUTSQR =
BEGIN
LOCAL
TEMP1,
BYTENUM, ! BYTE NUMBER OF TARGET RECORD
HEADER,
CRP; ! SAVE FOR ARA
REGISTER
FULLRECORDSIZE;
TRACE ( 'PUTSQR' );
%([ FIND THE CRP AND BYTE-ADDRESS OF THE CURRENT RECORD FOR EACH FILE TYPE ])%
%([ WE MUST PERFORM DIFFERENT OPERATIONS HERE DEPENDING
UPON THE FILE ORGANIZATION. HERE IS A SUMMARY OF
THE ACTIONS WHICH ARE DONE BELOW:
ASCII FILES:
IF THIS IS AN ASCII FILE, THEN WE SHOULD NOT BE HERE, MUST BE A BUG.
SEQUENTIAL FILES:
FOR SEQUENTIAL FILES, WE FIRST MUST COMPUTE THE SIZE
OF THIS RECORD IN WORDS. THIS QUANTITY IS COMPUTED HERE
BECAUSE IT IS USED HEAVILY LATER AND WE WOULD LIKE NOT
TO HAVE TO RE-COMPUTE IT SEVERAL TIMES. THEN, WE MUST
DETERMINE IF THIS RECORD CAN FIT ON THE PAGE IF THE
FB$BLK ATTRIBUTE IS DEFINED FOR THE FILE.
RELATIVE FILES:
WE MUST FETCH EITHER THE NRP OR THE USER'S RECORD
KEY, DEPENDING UPON HIS RECORD-ACCESS FIELD. THIS
VALUE WILL THEN BE MAPPED INTO AN RFA WHICH GIVES
THE STARTING ADDRESS OF THE TARGET RECORD. ])%
%([ COMPUTE THE SIZE IN WORDS OF THIS RECORD ])%
RST [ RSTRSZW ] = SIZEINWORDS ( .RAB [ RABRSZ ], .FST [ FSTBSZ ] );
CASE FILEORG FROM 0 TO 3 OF
SET
[0]: %(ASCII)% 0; ! SHOULD NOT GET HERE
[1]: %(SEQ)% BEGIN
CRP = .RST [ RSTNRP ] ; ! GET NRP
%([ IF FILE IS BLOCKED, SEE IF RECORD
CAN FIT ON THIS PAGE ])%
IF BLOCKED
THEN ! CHECK TO SEE IF RECORD CAN FIT ON PAGE
CRP =CALLNOSPAN ( LCI ( CRP ) );
BYTENUM = .CRP ! GET FILE ADDRESS
END; %( OF CASE SEQUENTIAL FILE )%
[2]: %(REL)% BEGIN
CRP = ( CASE RECORDACCESS FROM 0 TO 1 OF
SET
[0]: %(SEQ)% .RST [ RSTNRP ] ; ! FETCH NRP
[1]: %(KEY)% BEGIN
IF .RAB [ RABKBF ] LSS MINUSERBUFF THEN USERERROR ( ER$KBF );
..RAB [ RABKBF ]
END
TES); %( END OF CASE ADRMODE )%
IF ( BYTENUM = CALLNUMBERTORFA ( LCI ( CRP ) ) ) ! COMPUTE BYTE-# OF RECORD
IS FALSE THEN USERERROR ( ER$KEY ) ! RECORD WAS .GTR. MRN
END; %( OF RELATIVE FILE )%
[3]:
TES; %( END OF CASE FILEORG OF SET )%
%([ AT THIS POINT, WE HAVE THE FOLLOWING VALUES:
CRP = RFA OF THE RECORD TO BE WRITTEN
BYTENUM = BYTE ADDRESS OF RECORD ])%
%([ SET UP SOME VALUES WHICH WE WILL USE LATER SO THEY
CAN BE IN REGISTERS TO SAVE TIME ])%
FULLRECORDSIZE = .RST [ RSTRSZW ]; ! SIZE OF ENTIRE RECORD
%([ MAKE SURE THE RECORD CAN FIT ON ONE PAGE IF BLOCKED ])%
IF BLOCKED
THEN IF ( ( .FULLRECORDSIZE + HEADERSIZE ) GTR PAGESIZE ) THEN USERERROR ( ER$RSZ );
%([ PRINT OUT THE RESULTS FOR DEBUGGING ])%
LOOKAT ( ' BYTE NUMBER OF REC: ', BYTENUM );
LOOKAT ( ' CURRENT REC PTR:: ', CRP );
%([ UNLOCK CURRENT RECORD ])%
IF DATALOCKED THEN UNLOCK ( RST [ RSTDATARFA ] ); ! UNLOCK THE CURRENT RECORD
%([ MAKE CRP EQUAL TO NRP ])%
RST [ RSTDATARFA ] = .CRP; ! CRP = NRP
%([ LOCK THE RECORD TO BE WRITTEN ])%
IF LOCKING THEN LOCKREC ( CRP ); ! LOCK THE RECORD
%([ THE RECORD IS NOW LOCKED ( IF FILE-SHARING )
HOWEVER, IT MAY NOT BE IN OUR BUFFER SO
WE MUST GET IT THERE AND SET UP THE
POINTER TO IT ( PAGPTR ) WITHIN THE WINDOW PAGE ])%
%([ POSITION THE FILE TO THE CORRECT RECORD ])%
CALLGTBYTE ( LCI ( BYTENUM ), PCI ( FALSE )); ! FETCH FILE PAGE INTO USER WINDOW
%([ THE PAGE IS NOW IN THE BUFFER AND PAGPTR POINTS TO IT ])%
HEADER = .( .RST [ RSTPAGPTR ] ); ! GET RECORD HEADER
IF ( SEQFILE AND ( .HEADER ISNT ZERO ) ) THEN USERERROR ( ER$NEF ); ! ATTEMPT TO INSERT RECORD
%([ FOR RELATIVE FILES, THE RECORD CAN BE WRITTEN EXCEPT
IN THE CASE WHERE THE RECORD IS VALID, BUT NOT DELETED.
THEREFORE, WE MUST CHECK BOTH THE VALID AND THE DELETED
BITS IN THE RECORD HEADER. ])%
IF RELFILE
THEN %(CHECK FOR NON-DELETED RECORD)%
BEGIN
IF ( CHKFLAG ( HEADER, RHDRVALID+RHDRDELETE ) )
IS
( RHDRVALID )
THEN
USERERROR ( ER$REX );
RAB [ RABBKT ] = .CRP ! RETURN RECORD NUMBER
END; %(OF IF RELFILE)%
%([ NOW, MOVE THE RECORD ONTO THE FILE PAGE ])%
CALLPUTREC; ! MOVE RECORD
%([ UPDATE THE HIGHEST BYTE IN THE FILE ])%
TEMP1 = .BYTENUM + .FULLRECORDSIZE + HEADERSIZE; ! COMPUTE WHERE NEXT RECORD IS
IF .TEMP1 GTR .RST [ RSTHYBYTE ] ! IF THIS RECORD IS HIGHER THAN ANY PREVIOUS ONE...
THEN BEGIN
RST [ RSTHYBYTE ] = .TEMP1; ! RESET EOF BYTE
SIZEOFFILE = .TEMP1; ! CROCK
END;
%([ UPDATE THE NEXT RECORD POINTER ])%
IF SEQADR THEN RST [ RSTNRP ] =
( IF SEQFILE THEN .CRP + HEADERSIZE + .FULLRECORDSIZE ! NRP = OLD NRP + SIZE OF HEADER + SIZE OF RECORD
ELSE .CRP + 1 ); ! BUMP RECORD NUMBER FOR RELATIVE FILES
%( NOW RELEASE ANY LOCKED RECORD )%
IF DATALOCKED THEN UNLOCK ( RST [ RSTDATARFA ] ); ! UNLOCK THE RECORD
GOODRETURN
END; %( OF PUTSQR )%
! PUTREC
! ======
! THIS ROUTINE CREATES A RECORD IN A RMS-20 FILE. IT IS
! ASSUMED ON INPUT THAT PAGPTR POINTS TO THE
! CORRECT PLACE ON THE CURRENT WINDOW PAGE AT WHICH TO
! WRITE THE RECORD. THERE MUST BE NO OVERLAP PAST
! THE END OF THE WINDOW PAGE ON INPUT.
! ON OUTPUT, PAGPTR WILL BE CLOBBERED.
! INPUT:
! <NONE>
! OUTPUT:
! <NO STATUS RETURNED>
! GLOBALS USED:
! GTBYTE
! MOVEREC
GLOBAL ROUTINE PUTREC: NOVALUE =
BEGIN
LOCAL
COUNT,
BYTESIZE,
DUMMYLOCAL, ! USED TO PASS SUBROUTINE ARGS
NEWPAGE,
USERBUFF;
REGISTER
RECORDPTR,
TEMP,
BLTAC;
MAP
RECORDPTR: POINTER;
TRACE ( 'PUTREC' );
%([ CHECK VALIDITY OF A FEW THINGS ])%
RECORDPTR = .RST [ RSTPAGPTR ]; ! FETCH POINTER
%([ WRITE HEADER ])%
RECORDPTR [ WHOLEWORD ] = .RAB [ RABRSZ ] + RHDRVALID; ! RECORD-SIZE + VALID
%([ WE HAVE NOW WRITTEN THE HEADER FOR THIS RECORD.
WE MUST BUMP THE FILE POINTER AND CHECK TO SEE
IF WE ARE PAST THE END OF THE FILE BUFFER. IF SO,
WE WILL MAP IN THE NEXT PAGE OF THE FILE AND WRITE
THE REST OF THE RECORD ])%
RECORDPTR = .RECORDPTR + 1; ! BUMP FILE POINTER
IF ( .RECORDPTR AND OFSETMASK ) IS ZERO
THEN %( WE OVERLAPPED )%
BEGIN %( TO MAP NEXT PAGE )%
SETBFDUPD (CBD [BKDBFDADR]); ! INDIC FILE PAGE UPD
NEWPAGE = (( .CURRENTFILEPAGE +1 ) ^ P2W ); ! GET START OF NEXT FILE PAGE
%([ POSITION THE FILE ])%
CALLGTBYTE ( LCI ( NEWPAGE ), %( RFA OF NEXT PAGE )%
PCI ( FALSE )); %( NO ABORT )%
RECORDPTR = .RST [ RSTPAGPTR ] ! RESET POINTER
END; %( OF IF OFFSET IS ZERO )%
%([ WE ARE NOW READY TO MOVE THE RECORD TO THE FILE.
HOWEVER, IN MOST CASES THE RECORD WILL FIT ENTIRELY
ON THE CURRENT FILE PAGE. IF THIS IS THE CASE, WE
DON'T NEED TO PERFORM ALL THE PAGE TURNING THAT
"MOVEREC" CAN DO; SO, A QUICK BLT IS ALL WE NEED.
THEREFORE, IF THIS RECORD DOES NOT SPAN FILE PAGES,
WE WILL DO THE MOVE HERE; OTHERWISE, WE WILL CALL
"MOVEREC" TO DO IT FOR US. ])%
BYTESIZE = .FST [ FSTBSZ ]; ! BYTE SIZE OF RECORD TO MOVE
COUNT = .RAB [ RABRSZ ]; ! SIZE OF RECORD
USERBUFF = .RAB [ RABRBF ]; ! GET USER ADDRESS
TEMP = .RST [ RSTRSZW ]; ! GET RSZW INTO AC
IF ( ( .RECORDPTR AND OFSETMASK ) + .TEMP ) LSS PAGESIZE
THEN %(THIS RECORD DOES NOT SPAN PAGE BOUNDARIES)%
BEGIN
SETBFDUPD(CBD[BKDBFDADR]); !INDIC FILE PAGE UPD
MOVEWORDS ( %(FROM)% .USERBUFF,
%(TO)% .RECORDPTR,
%(SIZE)% .TEMP );
RETURN
END; %( OF IF THIS RECORD DOESNT SPAN PAGES )%
%([ SET UP TO MOVE THE RECORD, IF IT SPANS PAGES ])%
DUMMYLOCAL = .RECORDPTR; ! STORE IN LOCAL VARIABLE
CALLMOVEREC ( LCI ( DUMMYLOCAL ), %( WINDOW PTR )%
LCI ( USERBUFF ), %( USER BUFFER )%
PCI ( TRUE ), %( PUT-FLAG )%
LCI ( COUNT ), %( SIZE )%
LCI ( BYTESIZE ) ); %( GUESS WHAT )%
RETURN
END; %( OF PUTREC )%
! PUTIDX
! ======
! ROUTINE TO INSERT A USER DATA RECORD INTO AN INDEXED FILE. ON
! ENTRY TO THIS ROUTINE, NO PREPARATION OR RECORD UNLOCKING
! HAS BEEN DONE.
! INPUT:
! <NONE>
! OUTPUT:
! <NONE>
! ROUTINES CALLED:
! FOLLOWPATH
! INSRTUDR
! IDXUPDATE
! INSRTSIDR
! REMOVRECORD
GLOBAL ROUTINE PUTIDX: NOVALUE =
BEGIN
%IF INDX %THEN
EXTERNAL ROUTINE
PUTSIDR, ! PUT A SECONDARY RECORD
SETPUT; ! SET UP ROUTINE FOR PUT
LOCAL
RESULT,
RECDESC: FORMATS[ RDSIZE ], ! RECORD DESCRIPTOR PACKET
SECRECDESC: FORMATS[ RDSIZE ], ! RECORD DESCIPTOR PACKET FOR SEC INDEX
BKTDESC: FORMATS[ BDSIZE ], ! BUCKET DESCRIPTOR OF DATA
SPLITBD1: FORMATS[ BDSIZE ], ! BUCKET DESCRIPTOR FOR 1ST EXTRA BUCKET
SPLITBD2: FORMATS[ BDSIZE ], ! " " " 2ND EXTRA BUCKET
ROOTBD: FORMATS[ BDSIZE ], ! BUCKET DESC FOR INDEX ROOT
TEMPPTR: POINTER, ! PTR TO PROPER BUCKET DESCRIPTOR
USERRECORDPTR: POINTER, ! PTR TO THE USER'S RECORD
ADDRESSOFRECORD , ! SAVE LOCATION OF NEW RECORD HERE
KEYOFREFERENCE , ! CURRENT KEY VALUE
DATAPAGE ; ! DATA PAGE NUMBER
%([ DONT COMPILE FOR VERSION 1 ])%
TRACE ( 'PUTIDX');
%([ SET UP THE ADDRESS OF THE USER'S DATA RECORD ])%
USERRECORDPTR = .RAB [ RABRBF ];
%([ SET UP THE ARGUMENTS FOR THE PUT INDEXED OPERATION ])%
CALLSETPUT ( LCT ( RECDESC ) );
%([ SET OUR BUCKET DESCRIPTOR TO BE NULL ])%
SETNULLBD ( BKTDESC );
%([***** LOCK THE ENTIRE INDEX DURING OUR OPERATION ***** ])%
IF LOCKING
THEN
BEGIN
IF LOCKINDEX (ENQBLK, ENQEXC) IS FALSE
THEN USERERROR ( ER$EDQ )
END; %(OF IF LOCKING)%
%([ BEFORE WE INSERT THE RECORD, WE MUST CHECK TO MAKE
SURE THAT THIS KEY HAS AN INDEX STRUCTURE ])%
IF NOINDEXFLAG ISON
THEN %(WE MUST CREATE AN INDEX ROOT AND A FIRST DATA BUCKET )%
BEGIN
CALLMAKIDX; ! MAKE THE INDEX
%([ WE MUST NOW CHECK TO SEE IF THERE STILL ISN'T
AN INDEX FOR THIS KEY. THIS COULD BE TRUE IF
A FILE WITHOUT AN INDEX WAS OPENED, BUT SOMEONE
ELSE CREATED AN INDEX BEFORE WE DID. ])%
IF NOINDEXFLAG ISON
THEN %(THERE WAS AN ERROR)%
CALLCLEANUP ( %(BKT)% LCT ( BKTDESC ) )
END; %(OF IF NOINDEX FLAG IS SET)%
%([ INSERT THE DATA RECORD INTO THE PRIMARY INDEX ])%
IF CALLFOLLOWPATH ( %(REC DESC)% LCT ( RECDESC ),
%(BUCKET)% LCT ( BKTDESC )) IS FALSE
%([ IF WE COULDN'T LOCATE THE DATA BUCKET, THEN WE MUST
EXIT WITH FAILURE. HOWEVER, IF THE SEARCH KEY IS .GTR.
THAN ALL KEYS IN THE BUCKET, THEN THAT IS A REASONABLE
SITUATION. ])%
THEN CALLCLEANUP ( %(BKT)% LCT ( BKTDESC ) );
%([ CHECK FOR DUPLICATE RECORD ])%
RESULT = CALLCHKDUP ( %(REC DESC)% LCT ( RECDESC ),
%(BUCKET)% LCT ( BKTDESC ) );
%([ WE NOW HAVE LOCATED THE POSITION WHERE THE NEW RECORD
IS TO BE INSERTED. HOWEVER, WE MUST DETERMINE IF
SOME OTHER PROCESS ALREADY HAS THE BUCKET LOCKED. ])%
IF .RESULT ISNT FALSE %(DID CHKDUP SUCCEED?)%
THEN IF LOCKING
THEN
BEGIN %(TO LOCK THE BUCKET)%
RESULT = LOCKBD ( BKTDESC, ENQAA, ENQEXC ) ! DON'T WAIT FOR BUCKET
END; %(OF IF LOCKING)%
%([ THE RECPTR FIELD IN THE RECORD-DESCRIPTOR NOW CONTAINS
THE ADDRESS WHERE WE WANT TO WRITE OUR NEW RECORD. ])%
IF .RESULT ISNT FALSE %(IF CHKDUP SAID WE CAN GO ON)%
THEN
RESULT = CALLINSRTUDR ( %(REC-DESC)% LCT ( RECDESC ),
%(REC)% LPT ( USERRECORDPTR ),
%(BUCKET)% LCT ( BKTDESC ),
%(EXTRA-1)% LCT ( SPLITBD1 ),
%(EXTRA-2)% LCT ( SPLITBD2 ) );
%([ IF EITHER CHKDUP, LOCKIT, OR INSRTUDR RETURNED AN ERROR, WE
MUST CLEAN UP OUR OPERATIONS. ])%
IF .RESULT IS FALSE THEN
CALLCLEANUP ( %(BUCKET)% LCT ( BKTDESC ));
%([ WE MUST NOW SAVE THE ADDRESS WITHIN THE DATA BUCKET OF THE
THE RECORD WE JUST INSERTED ])%
ADDRESSOFRECORD = .RECDESC [ RDRECPTR ];
%([** IF IT IS SEQ $PUT AND A BUCKET SPLIT(ONE WAY) OCCURRED **])%
%([** WITH R-NEW GOING TO A NEW BUCKET, THEN THE ORIG BKT WAS **])%
%([** FLUSHED IN INSRTUDR SO WE MUST MAKE THE SPLIT BUCKET **])%
%([** THE CURRENT BKT... **])%
IF SEQADR ! SEQ ACCESS
THEN
IF FLUSHORIGBD ( RECDESC ) ISON
THEN
BEGIN
MOVEBKTDESC ( %(FROM)% SPLITBD1,
%(TO)% BKTDESC );
CLRFLAG ( RECDESC [ RDSTATUS ], RDFLGNEWINNEW );
END;
%([ AT THIS POINT, BOTH THE DATA BUCKET AND THE INDEX
ARE STILL LOCKED. WE MUST UPDATE THE INDEX STRUCTURE
(IF NECESSARY) AND THEN UNLOCK ALL THESE BUCKETS ])%
IF IDXUPDATEFLAG ( RECDESC ) ISON
THEN %(WE MUST UPDATE THE INDEX)%
BEGIN
IF CALLIDXUPDATE ( %(REC DESC)% LCT ( RECDESC ),
%(BUCKET)% LCT ( BKTDESC ),
%(EXTRA-1)% LCT ( SPLITBD1 ),
%(EXTRA-2)% LCT ( SPLITBD2 ) ) IS FALSE
THEN SETIDXERRORFLAG ( RECDESC ) ! REMEMBER THE ERROR
END; %(OF IF WE MUST UPDATE THE INDEX)%
%([ MOVE THE RFA OF THIS RECORD INTO THE RRV ADDRESS
IN THE RECORD DESCRIPTOR PACKET, AND INTO THE CURRENT
RP ADDRESS IN THE RST (SO IT CAN BE RETURNED TO THE
USER ON RETURN FROM PUTIDX) ])%
RST [ RSTDATARFA ] = (SECRECDESC [ RDRRV ] = .RECDESC [ RDRFA ] ); ! MOVE RFA TO RRV
SECRECDESC [ RDSTATUS ] = .RECDESC [ RDSTATUS ]; ! SAVE STATUS BITS
%([ LOOP OVER ALL KEY DESCRIPTORS ])%
KEYOFREFERENCE = REFPRIMARY; ! INITIALIZE TO 0
WHILE ( KDB = .KDB [ KDBNXT ] ) ISNT ZERO
DO %(THIS LOOP)%
BEGIN
%([ BUMP THE CURRENT KEY OF REFERENCE ])%
INC ( KEYOFREFERENCE, 1 );
%([ MAKE SURE RECORD IS LONG ENOUGH TO CONTAIN
THIS SECONDARY KEY VALUE ])%
IF .RAB [ RABRSZ ] GEQ .KDB [ KDBMINRSZ ]
%(AND)%
%(THIS KEY IS NOT THE NULL KEY VALUE)%
THEN
BEGIN %(TO INSERT RECORD INTO THIS SEC INDEX)%
RTRACE (%STRING(' INSERTING RECORD INTO SEC IDX',%CHAR(13),%CHAR(10)));
%([ INSERT THIS RECORD IN THE SECONDARY INDEX ])%
IF CALLPUTSIDR ( LCT ( SECRECDESC ) ) IS FALSE
THEN
CALLREMOVRECORD ( LCT ( RECDESC ),
LCT ( BKTDESC ) );
%([ WE MUST NOW MOVE THE FLAGS FROM THIS RECORD
DESCRIPTOR INTO THE PRIMARY RECORD DESCRIPTOR.
THUS, IF WE SAW EITHER AN INDEX ERROR OR A
DUPLICATE SECONDARY, WE MUST REMEMBER IT. ])%
SETFLAG ( RECDESC [ RDSTATUS ], .SECRECDESC [ RDSTATUS ] )
END %(OF RECORD IS TO BE INSERTED)%
END; %(OF WHILE KDB ISNT ZERO)%
%([ RECORD HAS BEEN INSERTED INTO ALL INDEXES ])%
RTRACE (%STRING(' RECORD HAS BEEN INSERTED',%CHAR(13),%CHAR(10)));
%([ UPDATE NRP IF THIS WAS A $PUT SEQUENTIAL ])%
KDB = .FST [ FSTKDB ]; ! SET UP FOR PRIM KEY
RECDESC [ RDRECPTR ] = .ADDRESSOFRECORD; ! RESTORE LOC OF RECORD
%([** UPDATE NRP IF THIS WAS A $PUT SEQ **])%
IF SEQADR ! SEQUENTIAL ACCESS
THEN
CALLSETNRP ( LCT ( RECDESC ), LCT ( BKTDESC ) );
%([ CHECK FOR DUPLICATE RECORDS ])%
IF SAMEKEYFLAG ( RECDESC ) ISON THEN USRSTS = SU$DUP;
%([ CHECK FOR INDEX UPDATE ERRORS ])%
IF IDXERRORFLAG ( RECDESC ) ISON THEN USRSTS = SU$IDX;
%([ GIVE THE DATA BUCKET BACK (IT HAS ALREADY BEEN WRITTEN TO THE FILE ])%
CALLPUTBKT ( %(NO UPDATE)% PCI ( FALSE ),
%(BKT)% LCT ( BKTDESC ) );
%([ UNLOCK THE INDEX STRUCTURE OF THE FILE SO OTHER PROCESSES
CAN TRAVERSE THE INDEX. ])%
IF LOCKING THEN UNLOCKINDEX;
%([ RETURN TO THE $PUT DISPATCHER ])%
RETURN
%FI
END; %(OF PUTIDX)%
! SETPUT
! ======
! ROUTINE TO SET UP THE RECORD DESCRIPTOR PACKET FOR A
! $PUT TO AN INDEXED FILE. THIS ROUTINE PERFORMS
! THE FOLLOWING OPERATIONS:
!
! 1. SET UP THE KEY DESCRIPTOR BLOCK POINTER
! 2. CHECK THE LAST USER KEY IF THIS IS A $PUT SEQ
! 3. CHECK THE USER RECORD SIZE
! 4. COMPUTE THE WORD SIZE (RSZW) OF THE RECORD AND STORE IT
! 5. MOVE THE KEY INTO A TEMPORARY BUFFER
! 6. CHECK FOR OUT-OF-SEQUENCE KEY STRING
! INPUT:
! RECDESC = RECORD DESCRIPTOR PACKET
! OUTPUT:
! <NO STATUS RETURNED>
! FIELDS IN THE RECORD DESC. WHICH ARE MODIFIED:
! USRSIZE = SIZE OF USER KEY STRING
! USERPTR = ADDRESS OF PRIMARY KEY STRING
! ROUTINES CALLED:
! CKEYUI
GLOBAL ROUTINE SETPUT ( RECDESC ) =
BEGIN
%IF INDX %THEN
ARGUMENT (RECDESC,BASEADD);
MAP
RECDESC: POINTER;
LOCAL
DATARECORDPTR: FORMAT, ! ADDR OF USER DATA RECORD
CBKDPTR: POINTER, ! PTR TO CURRENT BUCKET DESC
LASTKEYBUFF;
REGISTER
MAXRECORDSIZE, ! MAX SIZE OF USER DATA RECORD
TEMPAC ,
RECORDSIZE; ! CURRENT SIZE OF USER DATA RECORD
%([ ***DONT COMPILE FOR VERSION 1 ***])%
TRACE ( 'SETPUT' );
%([ SET UP THE KDB POINTER FOR PRIMARY KEY ])%
KDB = .FST [ FSTKDB ];
%([ RELEASE THE CURRENT BUCKET, IF ANY ])%
RELEASCURENTBKT;
%([ CHECK IF USER'S RECORD IS TOO BIG FOR A BUCKET ])%
MAXRECORDSIZE = ( .KDB [ KDBDBKZ ] ^ B2W ); ! SIZE OF BUCKET
MAXRECORDSIZE = .MAXRECORDSIZE - BHHDRSIZE - .KDB [ KDBHSZ ];
RECORDSIZE = ( RST [ RSTRSZ ] = .RAB [ RABRSZ ] ); ! GET RECORD SIZE
IF ( RST [ RSTRSZW ] = ( RECDESC [ RDLENGTH ] = SIZEINWORDS ( .RECORDSIZE, .FST [ FSTBSZ ] ) ) )
GTR .MAXRECORDSIZE THEN USERERROR ( ER$RSZ );
%([ CHECK THAT THE RECORD CONTAINS THE PRIMARY KEY ])%
IF .RECORDSIZE LSS .KDB [ KDBMINRSZ ]
THEN %(THE PRIMARY KEY IS NOT IN THE RECORD)%
USERERROR ( ER$RSZ );
%([ WE WILL NOW MOVE THE PRIMARY KEY TO A TEMPORARY
BUFFER TO SAVE TIME ])%
DATARECORDPTR = .RAB [ RABRBF ];
CALLMOVEKEY ( %(FROM)% LPT ( DATARECORDPTR ),
%(TO)% GCT ( TBUFFER ) );
%([ SET UP THE RECORD DESCRIPTOR TO INDICATE THAT THE
KEY STRING RESIDES IN OUR TEMPORARY BUFFER ])%
%([ ***NEXT INSTR. ASSUMES THAT RDFLAGS AND RDSTATUS ARE
IN WORD 0 ********* ])%
RECDESC [ WHOLEWORD ] = ZERO;
RECDESC [ RDUSERPTR ] = TBUFFER;
RECDESC [ RDUSERSIZE ] = .KDB [ KDBKSZ ]; ! USE FULL KEY SIZE
%([ IF THIS IS A SEQUENTIAL $PUT OPERATION, WE MUST CHECK
THAT THE CURRENT KEY IS HIGHER THAN THE LAST KEY USED ])%
IF SEQADR
THEN
BEGIN
%([ IF THE LAST OPERATION WAS ALSO A $PUT SEQUENTIAL,
THEN WE MUST COMPARE THE KEYS ])%
IF .RST [ RSTLASTOPER ] IS C$PUT
THEN IF ( CHKFLAG ( RST [ RSTFLAGS ], FLGLASTSEQ ) ISON )
THEN
BEGIN
LASTKEYBUFF = .RST [ RSTKEYBUFF ]; ! GET ADDR OF LAST KEY
IF CALLCKEYKK ( %(REC DESC)% BPT ( RECDESC ),
%(LAST KEY)% LPT ( LASTKEYBUFF ) ) IS TRUE
%([ IS THIS KEY GTR THAN THE LAST ONE? ])%
%([ NOTE THAT CKEYKK RETURNS TRUE ONLY IF THE
SEARCH KEY IS LEQ THE TARGET KEY, THUS WE
ACTUALLY WANT THIS ROUTINE TO FAIL FOR OUR
KEY COMPARISON ])%
THEN USERERROR ( ER$SEQ )
END; %(OF IF LAST OPER WAS PUT AND LASTSEQ ISON)%
%([ INDICATE THAT THIS OPERATION IS SEQUENTIAL ])%
SETFLAG ( RST [ RSTFLAGS ], FLGLASTSEQ )
END %(OF IF THIS WAS A PUT SEQUENTAIL)%
ELSE %(THIS IS A RANDOM PUT...CLEAR THE SEQ BIT)%
CLRFLAG ( RST [ RSTFLAGS ], FLGLASTSEQ );
GOODRETURN
%FI
END; %(OF SETPUT)%
END
ELUDOM