Megatest

;; 	(dbr:dbstruct-inuse-set! dbstruct #f)
;; 	(mutex-unlock! *rundb-mutex*))))

;; (db:with-db dbstruct run-id sqlite3:exec "select blah from blaz;")
;; r/w is a flag to indicate if the db is modified by this query #t = yes, #f = no
;;
(define (db:with-db dbstruct run-id r/w proc . params)
  (let* ((dbdat (if (dbr:dbstruct? dbstruct)
		    (db:get-db dbstruct run-id)
		    (begin
		      (print-call-chain)
		      (print "db:with-db called with dbdat instead of dbstruct, FIXME!!")
		      dbstruct))) ;; cheat, allow for passing in a dbdat
	 (db    (db:dbdat-get-db dbdat))) 
    (handle-exceptions
     exn
     (begin
       (debug:print-error 0 *default-log-port* "sqlite3 issue in db:with-db, dbstruct=" dbstruct ", run-id=" run-id ", proc=" proc ", params=" params " error: " ((condition-property-accessor 'exn 'message) exn))
       (print-call-chain (current-error-port)))
     (let ((res (apply proc db params)))

(define (db:open-db dbstruct) ;;  (conc *toppath* "/megatest.db") (car *configinfo*))) 
  (let ((tmpdb (dbr:dbstruct-tmpdb dbstruct))) ;; RA => Returns the first reference in dbstruct
    (if tmpdb
	tmpdb
        ;; (mutex-lock! *rundb-mutex*)
        (let* ((dbpath       (db:dbfile-path)) ;;  0))
               (dbexists     (file-exists? dbpath))
               (tmpdb        (db:open-megatest-db path: dbpath)) ;; lock-create-open dbpath db:initialize-main-db))
               (mtdb         (db:open-megatest-db))
               (write-access (file-write-access? dbpath)))
          (if (and dbexists (not write-access))
              (set! *db-write-access* #f))
          (dbr:dbstruct-mtdb-set!   dbstruct mtdb)
          (dbr:dbstruct-tmpdb-set!  dbstruct tmpdb) ;; olddb is already a (cons db path)
          ;;	    (mutex-unlock! *rundb-mutex*)

	dbstruct)))
	  
;; Open the classic megatest.db file (defaults to open in toppath)
;;
;;   NOTE: returns a dbdat not a dbstruct!
;;
(define (db:open-megatest-db #!key (path #f))
  (let* ((dbpath       (conc (or path *toppath*) "/megatest.db"))
	 (dbexists     (file-exists? dbpath))
	 (db           (db:lock-create-open dbpath
					    (lambda (db)
					      (db:initialize-main-db db)
					      (db:initialize-run-id-db db))))
	 (write-access (file-write-access? dbpath)))
    (if (and dbexists (not write-access))

(define (db:get-access-mode)
  (if (args:get-arg "-use-db-cache") 'cached 'rmt))

;; Add db direct
;;
(define (db:dispatch-query access-mode rmt-cmd db-cmd . params)
  (if (eq? access-mode 'cached)
      (print "not doing cached calls right now"))
;;      (apply db:call-with-cached-db db-cmd params)
      (apply rmt-cmd params))
;;)

;; return the target db handle so it can be used
;;
(define (db:cache-for-read-only source target #!key (use-last-update #f))
  (if (and (hash-table-ref/default *global-db-store* target #f)
	   (>= (file-modification-time target)(file-modification-time source)))
      (hash-table-ref *global-db-store* target)