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Comment:Added stop-the-train, crowbar switch
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SHA1: bf4367276064e2920c46982263af598ed52c601c
User & Date: matt on 2022-11-08 22:15:13
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Context
2022-11-10
13:37
Fixed server/client signature. I think. check-in: bf877ecde8 user: matt tags: v1.70
2022-11-08
22:15
Added stop-the-train, crowbar switch check-in: bf43672760 user: matt tags: v1.70
14:24
Added improved new to old converter check-in: 5458437545 user: mrwellan tags: v1.70
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified common.scm from [8e93110015] to [7a004393e6].

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;; (define old-exit exit)
;; 
;; (define (exit . code)
;;   (if (null? code)
;;       (old-exit)
;;       (old-exit code)))












;; execute thunk, return value.  If exception thrown, trap exception, return #f, and emit nonfatal condition note to *default-log-port* .
;; arguments - thunk, message
(define (common:fail-safe thunk warning-message-on-exception)
  (handle-exceptions
   exn
   (begin








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;; (define old-exit exit)
;; 
;; (define (exit . code)
;;   (if (null? code)
;;       (old-exit)
;;       (old-exit code)))

(define (stop-the-train)
  (thread-start! (make-thread (lambda ()
				(let loop ()
				  (if (and *toppath*
					   (file-exists? (conc *toppath*"/stop-the-train")))
				      (begin
					(debug:print 0 *default-log-port* "ERROR: found file "*toppath*"/stop-the-train, exiting immediately")
					(exit 1)))
				  (thread-sleep! 5)
				  (loop))))))

;; execute thunk, return value.  If exception thrown, trap exception, return #f, and emit nonfatal condition note to *default-log-port* .
;; arguments - thunk, message
(define (common:fail-safe thunk warning-message-on-exception)
  (handle-exceptions
   exn
   (begin
︙︙

Modified commonmod.scm from [79bf78cc96] to [2570fcf4eb].

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;;
(define (get-cfg-areas cfgdat)
  (let ((adat (get-section cfgdat "areas")))
    (map (lambda (entry)
	   `(,(car entry) . 
	     ,(val->alist (cadr entry))))
	 adat)))
	 




;; (define (debug:print . params) #f)
;; (define (debug:print-info . params) #f)
;; 
;; (define (set-functions dbgp dbgpinfo)
;;   (set! debug:print dbgp)
;;   (set! debug:print-info dbgpinfo))









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;;
(define (get-cfg-areas cfgdat)
  (let ((adat (get-section cfgdat "areas")))
    (map (lambda (entry)
	   `(,(car entry) . 
	     ,(val->alist (cadr entry))))
	 adat)))

;;======================================================================
;; misc stuff
;;======================================================================

;; (define (debug:print . params) #f)
;; (define (debug:print-info . params) #f)
;; 
;; (define (set-functions dbgp dbgpinfo)
;;   (set! debug:print dbgp)
;;   (set! debug:print-info dbgpinfo))
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Modified dashboard.scm from [124f6f1518] to [6283f67b19].

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	 (update-buttons tabdat uidat (dboard:tabdat-numruns tabdat) (dboard:tabdat-num-tests tabdat)))
       ))
   "dashboard:runs-tab-updater"))

;;======================================================================
;; The heavy lifting starts here
;;======================================================================


(define (main)
  ;; (print "Starting dashboard main")

  (let* ((mtdb-path (conc *toppath* "/.megatest/main.db"))
         (target (args:get-arg "-target"))
         (commondat       (dboard:commondat-make)))
    (if target
        (begin
          (args:remove-arg-from-ht "-target")
          (dboard:commondat-target-set! commondat target)








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	 (update-buttons tabdat uidat (dboard:tabdat-numruns tabdat) (dboard:tabdat-num-tests tabdat)))
       ))
   "dashboard:runs-tab-updater"))

;;======================================================================
;; The heavy lifting starts here
;;======================================================================
(stop-the-train)

(define (main)
  ;; (print "Starting dashboard main")
    
  (let* ((mtdb-path (conc *toppath* "/.megatest/main.db"))
         (target (args:get-arg "-target"))
         (commondat       (dboard:commondat-make)))
    (if target
        (begin
          (args:remove-arg-from-ht "-target")
          (dboard:commondat-target-set! commondat target)
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Modified dbfile.scm from [2d10dcee17] to [5fcb8e6b81].

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(define (dbfile:print-err . params)
  (with-output-to-port
      (current-error-port)
    (lambda ()
      (apply print params))))
    
;; open an sql database inside a file lock
;; returns: db existed-prior-to-opening
;; RA => Returns a db handler; sets the lock if opened in writable mode
;;
;; (define *db-open-mutex* (make-mutex))
;;
#;(define (dbfile:lock-create-open fname initproc)
  (let* ((parent-dir   (or (pathname-directory fname)(current-directory))) ;; no parent? go local
         (raw-fname    (pathname-file fname))
	 (dir-writable (file-write-access? parent-dir))
	 (file-exists  (file-exists? fname))
	 (file-write   (if file-exists
			   (file-write-access? fname)
			   dir-writable )))
    ;; (mutex-lock! *db-open-mutex*) ;; tried this mutex, not clear it helped.
    (if file-write ;; dir-writable
	(condition-case
         (let* ((lockfname   (conc fname ".lock"))
                (readyfname  (conc parent-dir "/.ready-" raw-fname))
                (readyexists (common:file-exists? readyfname)))
           (if (not readyexists)
               (common:simple-file-lock-and-wait lockfname))
           (let ((db      (sqlite3:open-database fname)))
             (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 136000))
             (sqlite3:execute db "PRAGMA synchronous = 0;")
             (if (not file-exists)
                 (initproc db))
             (if (not readyexists)
                 (begin
                   (common:simple-file-release-lock lockfname)
                   (with-output-to-file
                       readyfname
                     (lambda ()
                       (print "Ready at " 
                              (seconds->year-work-week/day-time 
                               (current-seconds)))))))
             db))
         (exn (io-error)  (dbfile:print-and-exit "ERROR: i/o error with " fname ". Check permissions, disk space etc. and try again."))
         (exn (corrupt)   (dbfile:print-and-exit "ERROR: database " fname " is corrupt. Repair it to proceed."))
         (exn (busy)      (dbfile:print-and-exit "ERROR: database " fname " is locked. Try copying to another location, remove original and copy back."))
         (exn (permission)(dbfile:print-and-exit "ERROR: database " fname " has some permissions problem."))
         (exn () (dbfile:print-and-exit "ERROR: Unknown error with database " fname " message: " ((condition-property-accessor 'exn 'message) exn))))
        
	(condition-case
         (begin
           (dbfile:print-err "WARNING: opening db in non-writable dir " fname)
           (let ((db (sqlite3:open-database fname)))
             (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 136000))
             (sqlite3:execute db "PRAGMA synchronous = 0;")
	     ;; (mutex-unlock! *db-open-mutex*)
             db))
         (exn (io-error)
	      (dbfile:print-and-exit
	       "ERROR: i/o error with " fname ". Check permissions, disk space etc. and try again."))
         (exn (corrupt)
	      (dbfile:print-and-exit
	       "ERROR: database " fname " is corrupt. Repair it to proceed."))
         (exn (busy)
	      (dbfile:print-and-exit
	       "ERROR: database " fname " is locked. Try copying to another location, remove original and copy back."))
         (exn (permission)
	      (dbfile:print-and-exit
	       "ERROR: database " fname " has some permissions problem."))
         (exn ()
	      (dbfile:print-and-exit
	       "ERROR: Unknown error with database " fname " message: " ((condition-property-accessor 'exn 'message) exn))))
	)))


;; This routine creates the db if not already present. It is only called if the db is not already opened
;;
#;(define (db:init-dbstruct dbstruct run-id init-proc #!key (do-sync #t))
  (let* ((subdb          (dbfile:get-subdb dbstruct run-id))
	 (tmpdb-stack    (dbr:subdb-dbstack subdb)) 
	 (max-stale-tmp  (dbr:dbstruct-max-stale-secs dbstruct));; (configf:lookup-number *configdat* "server" "filling-db-max-stale-seconds" default: 10))
	   (dbpath       (dbr:dbstruct-tmppath dbstruct)) ;;  (db:dbfile-path))      ;; path to tmp db area
	   (dbname       (dbfile:run-id->dbname run-id))
	   (dbexists     (file-exists? dbpath))
	   (areapath     (dbr:dbstruct-areapath dbstruct))
	   (mtdbfname    (conc areapath "/"dbname))
	   (mtdbexists   (file-exists? mtdbfname))
	   (mtdbmodtime  (if mtdbexists (dbfile:lazy-sqlite-db-modification-time mtdbfname)  #f))
	   (mtdb         (db:open-sqlite-db mtdbfname init-proc))
	   ;; the reference db for syncing
	   (refdbfname   (conc dbpath "/"dbname"_ref"))
	   (refndb       (db:open-megatest-db refdbfname))
	   ;; (mtdbpath     (dbr:dbdat-dbfile mtdb))
	   ;; the tmpdb
	   (tmpdbfname   (conc dbpath"/"dbname)) ;; /tmp/<stuff>/.megatest/[main|1,2...].db 
	   (tmpdb        (db:open-megatest-db tmpdbfname)) ;; lock-create-open dbpath db:initialize-main-db))
	   (dbfexists    (common:file-exists? tmpdbfname))  ;; (conc dbpath "/megatest.db")))
	   (tmpdbmodtime (if dbfexists  (common:lazy-sqlite-db-modification-time tmpdbfname) #f))
	   
	   (write-access (file-write-access? mtdbfname))
	   
	   ;; (mtdbmodtime (if mtdbexists
	   ;; (common:lazy-sqlite-db-modification-time mtdbpath)
	   ;; #f)) ; moving this before db:open-megatest-db is
	   ;; called. if wal mode is on -WAL and -shm file get
	   ;; created with causing the tmpdbmodtime timestamp
	   ;; always greater than mtdbmodtime (tmpdbmodtime (if
	   ;; dbfexists (common:lazy-sqlite-db-modification-time
	   ;; tmpdbfname) #f)) if wal mode is on -WAL and -shm
	   ;; file get created when db:open-megatest-db is
	   ;; called. modtimedelta will always be < 10 so db in
	   ;; tmp not get synced (tmpdbmodtime (if dbfexists
	   ;; (db:get-last-update-time (car tmpdb)) #f)) (fmt
	   ;; (file-modification-time tmpdbfname))
	   
	   (modtimedelta (and mtdbmodtime tmpdbmodtime (- mtdbmodtime tmpdbmodtime))))

    (when write-access
      (sqlite3:execute (dbr:dbdat-dbh mtdb) "drop trigger if exists update_tests_trigger")
      (sqlite3:execute (dbr:dbdat-dbh mtdb) "drop trigger if exists update_runs_trigger"))
    
    ;; (print "mtdbmodtime " mtdbmodtime " tmpdbmodtime " tmpdbmodtime " mtdbpath " mtdbpath " " (conc *toppath* "/megatest.db"))
    ;; (debug:print-info 13 *default-log-port* "db:open-db>> mtdbpath="mtdbpath" mtdbexists="mtdbexists" and write-access="write-access)
    (if (and dbexists (not write-access))
	(begin
	  (set! *db-write-access* #f)
	  (dbr:subdb-read-only-set! subdb #t)))
    (dbr:subdb-mtdb-set!   subdb mtdb)
    (dbr:subdb-tmpdb-set!  subdb tmpdb)
    (dbr:subdb-dbstack-set! subdb (make-stack)) ;; BB: why a stack?  Why would the number of db's be indeterminate?  Is this a legacy of 1.db 2.db .. ?
    (stack-push! (dbr:subdb-dbstack subdb) tmpdb) ;; olddb is already a (cons db path)
    (dbr:subdb-refndb-set! subdb refndb)
    (if (and  (or (not dbfexists)
		  (and modtimedelta
		       (> modtimedelta max-stale-tmp))) ;; if db in tmp is over ten seconds older than the file in MTRA then do a sync back
	      do-sync)
	(begin
	  (dbfile:print-err "filling db " (dbr:dbdat-dbfile tmpdb) " with data \n    from " (dbr:dbdat-dbfile mtdb) " mod time delta: " modtimedelta)
	  (db:sync-tables (db:sync-all-tables-list subdb) #f mtdb refndb tmpdb)
	  ;; touch tmp db to avoid wal mode wierdness  
	  (set! (file-modification-time tmpdbfname) (current-seconds))  
	  (dbfile:print-err "INFO: db:sync-all-tables-list done.")
	  )
	(dbfile:print-err " db, " (dbr:dbdat-dbfile tmpdb) " already exists or fresh enough, not propogating data from\n     " (dbr:dbdat-dbfile mtdb) " mod time delta: " modtimedelta) )
    ;; (db:multi-db-sync subdb 'old2new))  ;; migrate data from megatest.db automatically
    tmpdb))
		

(define (dbfile:cautious-open-database fname init-proc sync-mode journal-mode #!optional (tries-left 500))
  (let* ((busy-file  (conc fname"-journal"))
	 (delay-time (* (- 51 tries-left) 1.1))
      	 (write-access (file-write-access? fname))
         (dir-access (file-write-access? (pathname-directory fname)))
         (retry      (lambda ()
		       (thread-sleep! delay-time)
		       (if (> tries-left 0)
			   (dbfile:cautious-open-database fname init-proc
							  sync-mode: sync-mode journal-mode: journal-mode
							  (- tries-left 1))))))
    (assert (>= tries-left 0) (conc "FATAL: too many attempts in dbfile:cautious-open-database of "fname", giving up."))

    (if (and (file-write-access? fname)
	     (file-exists? busy-file))
	(begin
	  (if (common:low-noise-print 120 busy-file)
	      (dbfile:print-err "INFO: dbfile:cautious-open-database: journal file "
				busy-file" exists, trying again in few seconds."))
	  (thread-sleep! 1)
	  (if (eq? tries-left 2)
	      (begin
	  	(dbfile:print-err "INFO: forcing journal rollup "busy-file)
	  	(dbfile:brute-force-salvage-db fname)))
	  (dbfile:cautious-open-database fname init-proc sync-mode: sync-mode journal-mode: journal-mode (- tries-left 1)))

	(let* ((result (condition-case
		           (if dir-access
			       (dbfile:with-simple-file-lock
				(conc fname ".lock")
				(lambda ()
				  (let* ((db-exists (file-exists? fname))
					 (db        (sqlite3:open-database fname))) ;; creates an empty db if it did not already exist.
                                    (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 30000))
				    (if sync-mode
					(sqlite3:execute db (conc "PRAGMA synchronous = "sync-mode";")))
				    (if journal-mode
					(sqlite3:execute db (conc "PRAGMA journal_mode = "journal-mode";")))
				    (if (and init-proc (not db-exists))
					(init-proc db))
				    db)))
                               (begin
				 (if (file-exists? fname )
                                     (let ((db (sqlite3:open-database fname)))
				       ;; pragmas synchronous not needed because this db is used read-only
				       ;; (sqlite3:execute db (conc "PRAGMA synchronous = "mode";")
				       db )
                                     (print "file doesn't exist: " fname))))
			 (exn (io-error)
			      (dbfile:print-err exn "ERROR: i/o error with " fname ". Check permissions, disk space etc. and try again.")
			      (retry))
			 (exn (corrupt)
			      (dbfile:print-err exn "ERROR: database " fname " is corrupt. Repair it to proceed.")
			      (retry))
			 (exn (busy)
			      (dbfile:print-err exn "ERROR: database " fname
						" is locked. Try copying to another location, remove original and copy back.")
			      (retry))
			 (exn (permission)(dbfile:print-err exn "ERROR: database " fname " has some permissions problem.")
			      (retry))
			 (exn ()
			      (dbfile:print-err exn "ERROR: Unknown error with database " fname " message: "
						((condition-property-accessor 'exn 'message) exn))
			      (retry)))))
	  result))))

(define (dbfile:brute-force-salvage-db fname)
  (let* ((backupfname (conc fname"-"(current-process-id)".bak"))
	 (cmd (conc "cp "fname" "backupfname";mv "fname" "(conc fname ".delme;")
		    "cp "backupfname" "fname)))
    (dbfile:print-err "WARNING: attempting recovery of file "fname" by running commands:\n"
		      "  "cmd)
    (system cmd)))

#;(define (dbfile:cautious-open-database-orig fname init-proc #!optional (tries-left 50))
  (let* ((lock-file  (conc fname".lock"))
	 (delay-time (* (- 51 tries-left) 1.1))
	 (retry      (lambda ()
		       (thread-sleep! delay-time)
		       (if (> tries-left 0)
			   (dbfile:cautious-open-database fname init-proc (- tries-left 1))))))
    (assert (>= tries-left 0) (conc "FATAL: too many attempts in dbfile:cautious-open-database of "fname", giving up."))
    (if (and (file-write-access? fname) (not (dbfile:simple-file-lock lock-file expire-time: 3)))
	(begin
	  (dbfile:print-err "INFO: dbfile:cautious-open-database: lock file " lock-file " exists, trying again in few seconds.")
	  (thread-sleep! 1)
	  (if (eq? tries-left 2)
	      (begin
		(dbfile:print-err "INFO: stealing the lock "lock-file)
		(delete-file* lock-file)))
	  (dbfile:cautious-open-database fname init-proc (- tries-left 1)))
	(let* ((db-exists (file-exists? fname))
	       (result (condition-case
			   (let* ((db (sqlite3:open-database fname)))
			     (if (and init-proc (not db-exists))
				 (init-proc db))
			     db)
			(exn (io-error)
			     (dbfile:print-err exn "ERROR: i/o error with " fname ". Check permissions, disk space etc. and try again.")
			     (retry))
			(exn (corrupt)
			     (dbfile:print-err exn "ERROR: database " fname " is corrupt. Repair it to proceed.")
			     (retry))
			(exn (busy)
			     (dbfile:print-err exn "ERROR: database " fname
					       " is locked. Try copying to another location, remove original and copy back.")
			     (retry))
			(exn (permission)(dbfile:print-err exn "ERROR: database " fname " has some permissions problem.")
			     (retry))
			(exn ()
			     (dbfile:print-err exn "ERROR: Unknown error with database " fname " message: "
					       ((condition-property-accessor 'exn 'message) exn))
			     (retry)))))
          (if (file-write-access? fname)
	    (dbfile:simple-file-release-lock lock-file)
          )






	  result))))


(define (dbfile:open-no-sync-db dbpath)
  (if *no-sync-db*
      *no-sync-db*
      (begin
	(if (not (file-exists? dbpath))








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(define (dbfile:print-err . params)
  (with-output-to-port
      (current-error-port)
    (lambda ()
      (apply print params))))
    














































































































































(define (dbfile:cautious-open-database fname init-proc sync-mode journal-mode #!optional (tries-left 500))
  (let* ((busy-file  (conc fname"-journal"))
	 (delay-time (* (- 51 tries-left) 1.1))
      	 (write-access (file-write-access? fname))
         (dir-access (file-write-access? (pathname-directory fname)))
         (retry      (lambda ()
		       (thread-sleep! delay-time)
		       (if (> tries-left 0)
			   (dbfile:cautious-open-database fname init-proc
							  sync-mode: sync-mode journal-mode: journal-mode
							  (- tries-left 1))))))
    (assert (>= tries-left 0) (conc "FATAL: too many attempts in dbfile:cautious-open-database of "fname", giving up."))
    
    (if (and (file-write-access? fname)
	     (file-exists? busy-file))
	(begin
	  (if (common:low-noise-print 120 busy-file)
	      (dbfile:print-err "INFO: dbfile:cautious-open-database: journal file "
				busy-file" exists, trying again in few seconds."))
	  (thread-sleep! 1)
	  (if (eq? tries-left 2)
	      (begin
	  	(dbfile:print-err "INFO: forcing journal rollup "busy-file)
	  	(dbfile:brute-force-salvage-db fname)))
	  (dbfile:cautious-open-database fname init-proc sync-mode: sync-mode journal-mode: journal-mode (- tries-left 1)))
	
	(let* ((result (condition-case
		        (if dir-access
			    (dbfile:with-simple-file-lock
			     (conc fname ".lock")
			     (lambda ()
			       (let* ((db-exists (file-exists? fname))
				      (db        (sqlite3:open-database fname))) ;; creates an empty db if it did not already exist.
                                 (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 30000))
				 (if sync-mode
				     (sqlite3:execute db (conc "PRAGMA synchronous = "sync-mode";")))
				 (if journal-mode
				     (sqlite3:execute db (conc "PRAGMA journal_mode = "journal-mode";")))
				 (if (and init-proc (not db-exists))
				     (init-proc db))
				 db)))
                            (begin
			      (if (file-exists? fname )
                                  (let ((db (sqlite3:open-database fname)))
				    ;; pragmas synchronous not needed because this db is used read-only
				    ;; (sqlite3:execute db (conc "PRAGMA synchronous = "mode";")
				    db )
                                  (print "file doesn't exist: " fname))))

















































			(exn (io-error)
			     (dbfile:print-err exn "ERROR: i/o error with " fname ". Check permissions, disk space etc. and try again.")
			     (retry))
			(exn (corrupt)
			     (dbfile:print-err exn "ERROR: database " fname " is corrupt. Repair it to proceed.")
			     (retry))
			(exn (busy)
			     (dbfile:print-err exn "ERROR: database " fname
					       " is locked. Try copying to another location, remove original and copy back.")
			     (retry))
			(exn (permission)(dbfile:print-err exn "ERROR: database " fname " has some permissions problem.")
			     (retry))
			(exn ()
			     (dbfile:print-err exn "ERROR: Unknown error with database " fname " message: "
					       ((condition-property-accessor 'exn 'message) exn))
			     (retry)))))
	  result))))


(define (dbfile:brute-force-salvage-db fname)
  (let* ((backupfname (conc fname"-"(current-process-id)".bak"))
	 (cmd (conc "cp "fname" "backupfname";mv "fname" "(conc fname ".delme;")
		    "cp "backupfname" "fname)))
    (dbfile:print-err "WARNING: attempting recovery of file "fname" by running commands:\n"
		      "  "cmd)
    (system cmd)))


(define (dbfile:open-no-sync-db dbpath)
  (if *no-sync-db*
      *no-sync-db*
      (begin
	(if (not (file-exists? dbpath))
︙︙

Modified launch.scm from [8b5c3e3658] to [60d380c61b].

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;;   side effects:
;;     sets; *configdat*    (megatest.config info)
;;           *runconfigdat* (runconfigs.config info)
;;           *configstatus* (status of the read data)
;;
(define (launch:setup #!key (force-reread #f) (areapath #f))
  (mutex-lock! *launch-setup-mutex*)






  (if (and *toppath*
	   (eq? *configstatus* 'fulldata) (not force-reread)) ;; got it all
      (begin
	(debug:print 2 *default-log-port* "NOTE: skipping launch:setup-body call since we have fulldata")
	(mutex-unlock! *launch-setup-mutex*)
	*toppath*)
      (let ((res (launch:setup-body force-reread: force-reread areapath: areapath)))








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;;   side effects:
;;     sets; *configdat*    (megatest.config info)
;;           *runconfigdat* (runconfigs.config info)
;;           *configstatus* (status of the read data)
;;
(define (launch:setup #!key (force-reread #f) (areapath #f))
  (mutex-lock! *launch-setup-mutex*)
  ;; this stops the train quickly for new processes
  (if (and *toppath*
	   (file-exists? (conc *toppath*"/stop-the-train")))
      (begin
	(debug:print 0 *default-log-port* "ERROR: found file "*toppath*"/stop-the-train, exiting immediately")
	(exit 1)))
  (if (and *toppath*
	   (eq? *configstatus* 'fulldata) (not force-reread)) ;; got it all
      (begin
	(debug:print 2 *default-log-port* "NOTE: skipping launch:setup-body call since we have fulldata")
	(mutex-unlock! *launch-setup-mutex*)
	*toppath*)
      (let ((res (launch:setup-body force-reread: force-reread areapath: areapath)))
︙︙

Modified megatest.scm from [92b16ace59] to [7c70251ef1].

︙︙
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       (start-watchdog (and (null? no-watchdog-args-vals) start-watchdog-specail-arg-val)))
       ;(print  "no-watchdog-args="no-watchdog-args "no-watchdog-args-vals="no-watchdog-args-vals " start-watchdog-specail-arg-val:" start-watchdog-specail-arg-val " start-watchdog:" start-watchdog) 
;;  (if start-watchdog
;;      (thread-start! *watchdog*))
    #t
)




;; bracket open-output-file with code to make leading directory if it does not exist and handle exceptions
(define (open-logfile logpath-in)
  (condition-case
   (let* ((log-dir (or (pathname-directory logpath-in) "."))
	  (fname   (pathname-strip-directory logpath-in))
	  (logpath (if (> (string-length fname) 250)








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       (start-watchdog (and (null? no-watchdog-args-vals) start-watchdog-specail-arg-val)))
       ;(print  "no-watchdog-args="no-watchdog-args "no-watchdog-args-vals="no-watchdog-args-vals " start-watchdog-specail-arg-val:" start-watchdog-specail-arg-val " start-watchdog:" start-watchdog) 
;;  (if start-watchdog
;;      (thread-start! *watchdog*))
    #t
)

;; stop the train watchdog
(stop-the-train)

;; bracket open-output-file with code to make leading directory if it does not exist and handle exceptions
(define (open-logfile logpath-in)
  (condition-case
   (let* ((log-dir (or (pathname-directory logpath-in) "."))
	  (fname   (pathname-strip-directory logpath-in))
	  (logpath (if (> (string-length fname) 250)
︙︙

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