Megatest

		  (if (not *time-to-exit*) (loop))))
	    (if (common:low-noise-print 30)
		(debug:print-info 0 *default-log-port* "Exiting watchdog timer, *time-to-exit* = " *time-to-exit*" pid="(current-process-id)" this-wd-num="this-wd-num)))))))

;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
(define (common:watchdog)
  (let ((dbstruct (db:setup)))
    (if (dbr:dbstruct-read-only dbstruct)
        (common:readonly-watchdog dbstruct)
        (common:writable-watchdog dbstruct))))


(define (std-exit-procedure)
  (on-exit (lambda () 0))
  ;;(BB> "std-exit-procedure called; *time-to-exit*="*time-to-exit*)

          tmpdb))))

;; Make the dbstruct, setup up auxillary db's and call for main db at least once
;;
;; called in http-transport and replicated in rmt.scm for *local* access. 
;;
(define (db:setup #!key (areapath #f))
  ;;
  (cond
   (*dbstruct-db* *dbstruct-db*);; TODO: when multiple areas are supported, this optimization will be a hazard
   (else ;;(common:on-homehost?)
    (let* ((dbstruct (make-dbr:dbstruct)))
      (launch:setup areapath: areapath)
      (db:open-db dbstruct areapath: areapath)
      (set! *dbstruct-db* dbstruct)
      dbstruct))))
   ;; (else
   ;;  (debug:print 0 *default-log-port* "ERROR: attempt to open database when not on homehost. Exiting. Homehost: " (common:get-homehost))
   ;;  (exit 1))))

;;   returns:
;;     *toppath*
;;   side effects:
;;     sets; *configdat*    (megatest.config info)
;;           *runconfigdat* (runconfigs.config info)
;;           *configstatus* (status of the read data)
;;
(define (launch:setup #!key (force #f) (areapath #f))
  (mutex-lock! *launch-setup-mutex*)
  (if (and *toppath*
	   (eq? *configstatus* 'fulldata)) ;; got it all
      (begin
	(debug:print 0 *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: force areapath: areapath)))
	(mutex-unlock! *launch-setup-mutex*)
	res)))

(define (launch:setup-body #!key (force #f) (areapath #f))
  (let* ((toppath  (or *toppath* areapath (getenv "MT_RUN_AREA_HOME"))) ;; preserve toppath
	 (runname  (common:args-get-runname))
	 (target   (common:args-get-target))
	 (linktree (common:get-linktree))
	 (sections (if target (list "default" target) #f)) ;; for runconfigs
	 (mtconfig (or (args:get-arg "-config") "megatest.config")) ;; allow overriding megatest.config 
	 (rundir   (if (and runname target linktree)(conc linktree "/" target "/" runname) #f))
	 (mtcachef (and rundir (conc rundir "/" ".megatest.cfg-"  megatest-version "-" megatest-fossil-hash)))

  ;; 1. check if server is started IFF cmd is a write OR if we are not on the homehost, store in runremote
  ;; 2. check the age of the connections. refresh the connection if it is older than timeout-20 seconds.
  ;; 3. do the query, if on homehost use local access
  ;;
  (let* ((start-time (current-seconds)) ;; snapshot time so all use cases get same value
         (areapath *toppath*);; TODO - resolve from dbstruct to be compatible with multiple areas
         (dbfile (conc *toppath* "/megatest.db"))
         (readonly-mode (not (file-write-access? dbfile))) ;; TODO: use dbstruct or runremote to figure this out in future
	 (runremote  (or area-dat *runremote*)))
    ;;(print "BB> readonly-mode is "readonly-mode" dbfile is "dbfile)
    (cond
     ;; give up if more than 15 attempts
     ((> attemptnum 15)
      (debug:print 0 *default-log-port* "ERROR: 15 tries to start/connect to server. Giving up.")
      (exit 1))

     ;; readonly mode, read request-  handle it - case 20