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Trailing-Edge - PDP-10 Archives - BB-FP64A-SB_1986 - 10,7/who/whostr.mac
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	TITLE	STRSCN - STRUCTURE mode scan defaulting for WHO

	SEARCH	WHOMAC

	$SETUP	(STRSCN)

Comment |

This module provides the STRUCTURE mode specific scan defaulting code. Its
only entry point is STRSCN.

|
;               TABLE OF CONTENTS FOR STRSCN
;
;
;                        SECTION                                   PAGE
;    1. STRSCN - Apply STRUCTURE mode specific scan input defaults   3
;    2. Storage...................................................   4
	SUBTTL	STRSCN - Apply STRUCTURE mode specific scan input defaults

;This routine applies the following defaults to the command line
;

STRSCN::SKIPE	.FXEXT(I)		;INSURE NO EXTENSION
	$FATAL	(EIC,<Extension illegal in this context>)

; Check for STR:
	MOVX	T1,FX.NDV		;AND THE NULL DEVICE BIT
	TDNE	T1,.FXMOD(I)		;DEVICE SPECIFIED?
	JRST	STRSC1			;NO
	SKIPE	.FXNAM(I)		;IS THE FILENAME WORD NON-ZERO?
	$FATAL (MSG,<Multiple structure names given>)
	MOVE	T1,.FXDEV(I)		;GET DEVICE NAME
	PUSHJ	P,STRMSK		;GENERATE A MASK
	JRST	STRSC4			;ENTER COMMON CODE

; Check for STR or #nn
STRSC1:	SKIPN	T1,.FXNAM(I)		;GET STR NAME FROM FILE NAME WORD
	JRST	STRSC3			;THERE ISN'T ONE
	TLNE	T1,(77B5)		;AND IS THE FIRST CHARACTER BLANK?
	JRST	STRSC2			;NO--GO CHECK OUT THE MASK
	MOVSS	T1			;POSITION STRUCTURE NUMBER
	PUSHJ	P,STRFSN##		;CONVERT TO STR NAME
	  $FATAL (ISN,<Illegal structure number>)
	MOVEM	T1,.FXNAM(I)		;UPDATE NAME
	SETOM	.FXNMM(I)		;NO WILDCARDS, IMPLIED OR EXPLICITE
	JRST	STRSC4			;FINISH UP
STRSC2:	MOVE	T2,.FXNMM(I)		;GET MASK
	CAMN	T2,[EXP -1]		;NEED TO FIX IT UP?
	PUSHJ	P,STRMSK		;YES--GENERATE NEW MASK
	JRST	STRSC4			;ONWARD

; Check for /STRUCTURE
STRSC3:	SKIPN	T1,.FZSTN##(I)		;GET NAME FROM SWITCH ARGUMENT
	JRST	STRSC4			;NONE GIVEN
	MOVE	T2,.FZSTM##(I)		;GET MASK
	MOVEM	T2,.FXNMM(I)		;STORE
	CAMN	T2,[EXP -1]		;WILDCARDS SPECIFIED?
	PUSHJ	P,STRMSK		;GENERATE A MASK

; Here to check for conflicts
STRSC4:	CHKSWT	(STN,STRUCTURE)		;CHECK FOR CONFLICTS
	MOVE	T1,.FXNMM(I)		;GET NAME MASK
	MOVEM	T1,.FZSTM##(I)		;STORE AS STRUCTURE MASK
	POPJ	P,			;AND RETURN
; Here to generate a mask based on the structure name
STRMSK:	MOVEM	T1,.FXNAM(I)		;UPDATE STR NAME
	SETZ	T2,			;CLEAR NEW MASK
	EXCH	T1,T2			;GET STR NAME
	MOVEI	T3,6			;LOOP FOR 6 CHARACTERS
STRMS1:	LSHC	T1,6			;SHIFT IN A CHARACTER
	TRON	T1,77			;MASK CHARACTER
	TRZ	T1,77			;ELSE MAKE IT LOOK WILD
	SOJG	T3,STRMS1		;LOOP
	MOVEM	T1,.FXNMM(I)		;STORE IT
	MOVE	T1,.FXNAM(I)		;RELOAD THE NAME
	POPJ	P,			;RETURN
	SUBTTL	Storage

	$LOW

	PRGEND
	TITLE	STRGET - Get STRUCTURE information

	SEARCH	WHOMAC
	$SETUP	(STRGET)

;               TABLE OF CONTENTS FOR STRGET
;
;
;                        SECTION                                   PAGE
;    1. Main STRUCTURE routines
;         1.1   STRNXT - Get the next structure...................   3
;         1.2   STRSET - Setup for a new structure................   4
;         1.3   STRINC - Handle incremental statistics............   5
;         1.4   STRSRT - Handle structure sorting.................   6
;    2. STRUCTURE tables
;         2.1   Define all structure subfields....................   7
;    3. DATA STORAGE..............................................  12
	SUBTTL	Main STRUCTURE routines -- STRNXT - Get the next structure

STRNXT::JUMPL	O,STRNX1		;JUMP IF THE FIRST TIME
	SKIPL	S.SORT##		;SEE IF /SORT
	 JRST	SRTNXT			;YES--GET NEXT STR
	ADDI	O,1			;NO--BUMP TO NEXT
	CAMLE	O,MAXSTR		;SEE IF PAST END
	 POPJ	P,			;YES--RETURN
	JRST	STRNX2			;NO--SETUP FOR THIS STR

STRNX1:	MOVEI	T1,^D36			;MAX STRUCTURE NUMBER
	MOVEM	T1,MAXSTR		;SAVE
	MOVEI	T1,^D10			;SET A HASH TABLE LENGTH
	MOVEI	T2,^D2			;AND SIZE OF ENTRY
	PUSHJ	P,.HASHI##		;INIT IT
	MOVEI	O,1			;START WITH STRCTURE 1
	SKIPL	T1,S.SORT##		;GET /SORT
	 JRST	STRSRT			;GO PROCESS IF GIVEN

STRNX2:	PUSHJ	P,STRSET		;SETUP FOR THIS STRUCTURE
	 JRST	STRNXT			;NOT ASSIGNED
	JRST	.POPJ1##		;AND RETURN
	SUBTTL	Main STRUCTURE routines -- STRSET - Setup for a new structure

STRSET::SKIPE	JP,STRCOR		;SEE IF CORE ALLOCATED YET
	 JRST	STRS.C			;YES
	MOVEI	T1,.SBLEN		;NO--GET SIZE
	PUSHJ	P,M$ALLOC##		;GET CORE
	MOVEM	T1,STRCOR		;SAVE STARTING ADDRESS
	MOVEI	JP,(T1)			;AND INTO JP
STRS.C:	HRLI	T1,(JP)			;GET STARTING ADDRESS
	HRRI	T1,1(JP)		;ENDING ADDRESS
	SETOM	(JP)			;SET FIRST WORD TO -1
	BLT	T1,.SBLEN-1(JP)		;AND SET THEM ALL TO -1
	MOVEI	T1,(O)			;GET STRUCTURE
	PJRST	STRFSN##		;CONVERT FS NUM TO STR NAME AND RETURN
	SUBTTL	Main STRUCTURE routines -- STRINC - Handle incremental statistics

STRINC::
STRINJ:	POPJ	P,			;NONE FOR NOW
	SUBTTL	Main STRUCTURE routines -- STRSRT - Handle structure sorting

STRSRT:	PUSHJ	P,.SAVE1##		;SAVE P1
	MOVEI	P1,(T1)			;SAVE SORT INDEX
	MOVE	T1,MAXSTR		;GET MAX STRS
	IMULI	T1,2			;2 WORD TABLE
	MOVN	T2,T1			;NEGATE INTO T2
	HRLZM	T2,SRTTAB		;SAVE -N,,0
	PUSHJ	P,I$ALLOC##		;GET THE CORE
	HRRM	T1,SRTTAB		;SAVE START
SRTJ.1:	PUSHJ	P,STRSET		;SETUP FOR THIS STRUCTURE
	 JRST	SRTJ.2			;NOT ASSIGNED
	PUSHJ	P,@SUMLOD##(P1)		;GET SORT KEY
	MOVEI	T2,-1(O)		;GET STRUCTURE
	IMULI	T2,2			;DOUBLE
	ADD	T2,SRTTAB		;PLUS START OF TABLE
	MOVEM	T1,(T2)			;SAVE SORT KEY FIELD
	MOVEM	O,1(T2)			;SAVE STRUCTURE NUMBER
SRTJ.2:	ADDI	O,1			;BUMP TO NEXT STRUCTURE
	CAMG	O,MAXSTR		;ALL DONE?
	 JRST	SRTJ.1			;NO--ADVANCE TO NEXT
	MOVE	T1,SRTTAB		;GET AOBJN WORD
	MOVE	T2,[400000,,2]		;UNSIGNED AND STRAIGHT SORT
	SKIPLE	S.SORT##+1		;SEE IF DESCENDING
	 TLO	T2,200000		;YES-SET FLAG
	PUSHJ	P,.SORT2##		;SORT THE LIST
	MOVE	T1,SRTTAB		;GET AOBJN
	MOVEM	T1,SRTPTR		;SAVE
	SETZM	SRTCNT			;NO STRUCTURES YET
	JRST	STRNXT			;AND BACK TO THE TOP


SRTNXT:	SKIPL	T1,SRTPTR		;GET POINTER
	 POPJ	P,			;ALL DONE
	SKIPN	O,1(T1)			;GET STR NUMBER
	 JRST	STRS.1			;NONE
	PUSHJ	P,STRSET		;SETUP FOR THIS STRUCTURE
	 JRST	STRS.1			;NOT ASSIGNED NOW?
	AOS	T1,SRTCNT		;COUNT THE STRUCTURES
	CAMLE	T1,S.SORT##+2		;IN RANGE?
	 POPJ	P,			;NO--STOP NOW
	MOVE	T1,[2,,2]		;ADVANCE POINTER
	ADDM	T1,SRTPTR		;TO NEXT PAIR
	JRST	.POPJ1##		;AND USE THAT J

STRS.1:	MOVE	T1,[2,,2]		;ADVANCE POINTER
	ADDM	T1,SRTPTR		;TO NEXT PAIR
	JRST	SRTNXT			;AND GET NEXT
	SUBTTL	STRUCTURE tables -- Define all structure subfields

; This macro fetches a sub-field about the structure. If the field has been
; gotten before, it simply returns the known field. If the field has
; not been gotten before, it it derived/computed, stored for later
; use, and returned.
;
; In all cases, the field will be returned in T1, and set in table
; .SBxxx (flag SB%xxx indicates if the field has been gotten)

DEFINE	SB$(X,N<1>),<
   XLIST
	SB%'X==.SBLEN			;;FLAG WORD
	.SB'X==.SBLEN+1			;;DATA WORD
	.SBLEN==.SBLEN+2
IFG N-1,.SBLEN==.SBLEN+N
	SB$'X::	AOSN	SB%'X(JP)	;;DO WE HAVE THE INFO?
		 JRST	SB1'X		;;NO--GO GET IT
		MOVE	T1,.SB'X(JP)	;;YES--JUST GET IT NOW
		POPJ	P,		;;AND RETURN
	SB1'X:				;;(HERE TO GET INFO)
   DEFINE END$,<
	XLIST
	MOVEM	T1,.SB'X(JP)		;STORE
	POPJ	P,			;AND RETURN
	LIST
   >
   LIST
>;END DEFINE

	.SBLEN==0
SB$(STN)	;STRUCTURE NAME
	MOVEI	T1,(O)			;GET FS NUMBER
	PUSHJ	P,STRFSN##		;CONVERT TO STR NAME
	  MOVEI	T1,0			;NO SUCH STR
	END$

SB$(FSN)	;FILE STRUCTURE NUMBER
	MOVEI	T1,(O)			;GET FS NUMBER
	END$

SB$(MTC)	;MOUNT COUNT
	PUSHJ	P,SB$DCH		;GET DISK CHARACTERISTICS
	MOVE	T1,.DCSMT(T1)		;GET MOUNT COUNT
	END$

SB$(SAJ)	;SINGLE ACCESS JOB NUMBER
	PUSHJ	P,SB$DCH		;GET DISK CHARACTERISTICS
	SKIPG	T1,.DCSAJ(T1)		;GET SINGLE ACCESS JOB NUMBER
	MOVEI	T1,0			;NOT SINGLE ACCESS
	END$

SB$(FRE)	;FIRST-COME, FIRST-SERVED BLOCKS AVAILABLE TO ALL USERS
	PUSHJ	P,SB$DCH		;GET DISK CHARACTERISTICS
	MOVE	T1,.DCFCT(T1)		;GET BLOCKS FREE
	END$

SB$(OWN)	;OWNER PPN
	PUSHJ	P,SB$DCH		;GET DISK CHARACTERISTICS
	MOVE	T1,.DCOWN(T1)		;GET OWNER PPN
	END$

SB$(DCH,.DCMAX+2)	;DISK CHARACTERISTICS BLOCK
	PUSHJ	P,SB$STN		;GET STR NAME
	MOVEM	T1,.SBDCH+2+.DCNAM(JP)	;SAVE IN ARG BLOCK
	MOVSI	T1,.DCMAX		;ARG BLOCK LENGTH
	HRRI	T1,.SBDCH+2(JP)		;ARG BLOCK ADDRESS
	PUSHJ	P,UDSKCHR##		;GET DISK CHARACTERISTICS
	  TDZA	T1,T1			;FAILED FOR SOME REASON
	MOVEM	T1,.SBDCH+1(JP)		;SAVE STUFF RETURNED IN THE AC
	MOVEI	T1,.SBDCH+2(JP)		;POINT TO DSKCHR BLOCK
	END$
	SUBTTL	DATA STORAGE

	$LOW

STRCOR::BLOCK	1
MAXSTR:	BLOCK	1
SRTTAB:	BLOCK	1
SRTPTR:	BLOCK	1
SRTCNT:	BLOCK	1

	END