Megatest

		     (string->number max-concurrent-jobs)
		     (not (>= num-running (string->number max-concurrent-jobs)))))
	    #t
	    (begin 
	      (debug:print 0 "WARNING: Max running jobs exceeded, current number running: " num-running 
			   ", max_concurrent_jobs: " max-concurrent-jobs)
	      #f)))))

(define (test:get-testconfig test-name system-allowed)
  (let* ((test-path    (conc *toppath* "/tests/" test-name))
	 (test-configf (conc test-path "/testconfig"))
	 (testexists   (and (file-exists? test-configf)(file-read-access? test-configf))))
    (if testexists
	(read-config test-configf #f system-allowed)
	#f)))
  
;; sort tests by priority and waiton
;; Move test specific stuff to a test unit FIXME one of these days
(define (tests:sort-by-priority-and-waiton test-names)
  (let ((testdetails   (make-hash-table))
	(mungepriority (lambda (priority)
			 (if priority
			     (let ((tmp (any->number priority)))
			       (if tmp tmp (begin (debug:print 0 "ERROR: bad priority value " priority ", using 0") 0)))
			     0))))
    (for-each (lambda (test-name)
		(let ((test-config (test:get-testconfig test-name #f)))
		  (if test-config (hash-table-set! testdetails test-name test-config))))
	      test-names)
    (sort 
     (hash-table-keys testdetails) ;; avoid dealing with deleted tests, look at the hash table
     (lambda (a b)
       (let* ((tconf-a   (hash-table-ref testdetails a))
	      (tconf-b   (hash-table-ref testdetails b))
	      (a-waiton   (config-lookup tconf-a "requirements" "waiton"))
	      (b-waiton   (config-lookup tconf-b "requirements" "waiton"))
	      (a-priority (mungepriority (config-lookup tconf-a "requirements" "priority")))
	      (b-priority (mungepriority (config-lookup tconf-b "requirements" "priority"))))
	 (if (and a-waiton (equal? a-waiton b))
	     #f ;; cannot have a which is waiting on b happening before b
	     (if (and b-waiton (equal? b-waiton a))
		 #t ;; this is the correct order, b is waiting on a and b is before a
		 (if (> a-priority b-priority)
		     #t ;; if a is a higher priority than b then we are good to go
		     #f))))))))

(define (run-tests db test-names)
  (let* ((keys        (db-get-keys db))
	 (keyvallst   (keys->vallist keys #t))
	 (run-id      (register-run db keys))  ;;  test-name)))
	 (deferred    '())) ;; delay running these since they have a waiton clause
    ;; on the first pass or call to run-tests set FAILS to NOT_STARTED if
    ;; -keepgoing is specified

      (for-each 
       (lambda (test-name)
	 (if (runs:can-run-more-tests db)
	     (run-one-test db run-id test-name keyvallst)
	     ;; add some delay 
	     ;(sleep 2)
	     ))
       (tests:sort-by-priority-and-waiton test-names))
      ;; (run-waiting-tests db)
      (if (args:get-arg "-keepgoing")
	  (let ((estrem (db:estimated-tests-remaining db run-id)))
	    (if (and (> estrem 0)
		     (eq? *globalexitstatus* 0))
		(begin
		  (debug:print 1 "Keep going, estimated " estrem " tests remaining to run, will continue in 3 seconds ...")
		  (sleep 3)
		  (run-waiting-tests db)
		  (loop (+ numtimes 1)))))))))
	   
;; VERY INEFFICIENT! Move stuff that should be done once up to calling proc
(define (run-one-test db run-id test-name keyvallst)
  (debug:print 1 "Launching test " test-name)
  ;; All these vars might be referenced by the testconfig file reader
  (setenv "MT_TEST_NAME" test-name) ;; 
  (setenv "MT_RUNNAME"   (args:get-arg ":runname"))
  (set-megatest-env-vars db run-id) ;; these may be needed by the launching process
  (change-directory *toppath*)
  (let* ((test-path    (conc *toppath* "/tests/" test-name)) ;; could use test:get-testconfig here ...
	 (test-configf (conc test-path "/testconfig"))
	 (testexists   (and (file-exists? test-configf)(file-read-access? test-configf)))
	 (test-conf    (if testexists (read-config test-configf #f #t) (make-hash-table)))
	 (waiton       (let ((w (config-lookup test-conf "requirements" "waiton")))
			 (if (string? w)(string-split w)'())))
	 (tags         (let ((t (config-lookup test-conf "setup" "tags")))
			 ;; we want our tags to be separated by commas and fully delimited by commas