Megatest

	     (or (> monitor-modtime *last-monitor-update-time*)
		 (> (- run-update-time *last-monitor-update-time*) 5))) ;; update every 1/2 minute just in case
	(begin
	  (set! *last-monitor-update-time* run-update-time) ;; monitor-modtime)
	  #t)
	#f)))

;; DOES NOT WORK RELIABLY WITH /tmp WAL mode files. Timestamps only change when the db
;; is closed (I think). If db dir starts with /tmp always return true
;;
(define (dashboard:database-changed? commondat tabdat #!key (context-key 'default))
  (let* ((run-update-time (current-seconds))
	 (dbdir           (dboard:tabdat-dbdir tabdat))
	 (modtime         (dashboard:get-youngest-run-db-mod-time dbdir))
	 (recalc          (dashboard:recalc modtime 
					    (dboard:commondat-please-update commondat) 
					    (dboard:get-last-db-update tabdat context-key))))
    ;; (dboard:tabdat-last-db-update tabdat))))
    (if recalc 
	(dboard:set-last-db-update! tabdat context-key run-update-time))
    (dboard:commondat-please-update-set! commondat #f)
    recalc))

(define (dashboard:get-youngest-run-db-mod-time dbdir)
  (handle-exceptions
   exn
   (begin
     (debug:print 2 *default-log-port* "WARNING: error in accessing databases in get-youngest-run-db-mod-time: " ((condition-property-accessor 'exn 'message) exn)
		  " db-dir="dbdir ", exn=" exn)
     (current-seconds)) ;; something went wrong - just print an error and return current-seconds
   (common:max (map (lambda (filen)
		      (file-modification-time filen))
		    (glob (conc dbdir "/*.db*"))))))

(define (dboard:get-last-db-update tabdat context)
  (hash-table-ref/default (dboard:tabdat-last-db-update tabdat) context 0))

(define (dboard:set-last-db-update! tabdat context newtime)
  (hash-table-set! (dboard:tabdat-last-db-update tabdat) context newtime))