Megatest

					    (printf "Sending signal/term to ~A\n" pid)
					    (process-signal pid signal/term))))))
		       (process:children #f))
		      (original-exit exit-code)))))

;; for some switches always print the command to stderr
;;
(if (args:any? "-run" "-runall" "-remove-runs" "-set-state-status" "-run-test")
    (debug:print 0 *default-log-port* (string-intersperse (argv) " ")))

;; some switches imply homehost. Exit here if not on homehost
;;
(let ((homehost-required  (list "-cleanup-db" "-server")))
  (if (apply args:any? homehost-required)
      (if (not (common:on-homehost?))

;; 	 (launch:setup))
;;     (let* ((since-time (string->number (args:get-arg "-since")))
;; 	   (run-ids    (db:get-changed-run-ids since-time)))
;;       ;; (rmt:get-tests-for-runs-mindata run-ids testpatt states status not-in)
;;       (print (sort run-ids <))
;;       (set! *didsomething* #t)))
      

;;======================================================================
;; run single test
;;======================================================================
;; launch test; executed from runloop
;; should only be called by megatest, not user.
(if (args:get-arg "-internal-run-test")
    (general-run-call
     "-internal-run-test"
     "run single test; internal use only"
     (lambda (target runname keys keyvals)
       (let* ((flags args:arg-hash))
         (run:test-standalone target runname keys keyvals flags)


         )
       )))

;;======================================================================
;; full run
;;======================================================================

;; get lock in db for full run for this directory
;; for all tests with deps
;;   walk tree of tests to find head tasks
;;   add head tasks to task queue
;;   add dependant tasks to task queue 
;;   add remaining tasks to task queue
;; for each task in task queue
;;   if have adequate resources
;;     launch task
;;   else
;;     put task in deferred queue
;; if still ok to run tasks
;;   process deferred tasks per above steps
     
;; run all tests are are Not COMPLETED and PASS or CHECK
(if (or (args:get-arg "-runall")
	(args:get-arg "-run")
	(args:get-arg "-rerun-clean")
	(args:get-arg "-rerun-all")
	(args:get-arg "-runtests"))
    (let ((need-clean (or (args:get-arg "-rerun-clean")

	 (test-names         #f)  ;; Generated by a call to (tests:filter-test-names all-test-names test-patts))
	 (required-tests     #f)  ;; Put fully qualified test/testpath names in this list to be done
         (waitors-upon       (make-hash-table)) ;; given a test, return list of tests waiting upon this test.
	 (task-key           (conc (hash-table->alist flags) " " (get-host-name) " " (current-process-id)))
	 ;; (tdbdat             (tasks:open-db))
	 (config-reruns      (let ((x (configf:lookup *configdat* "setup" "reruns")))
			       (if x (string->number x) #f)))
	 (allowed-tests      #f)
         (last-loop-top-time (current-seconds)))

    ;; check if readonly
    (when readonly-mode
      (debug:print-error 0 *default-log-port* "megatest.db is readonly.  Cannot proceed.")
      (exit 1))

    ;; per user request. If less than 100Meg space on dbdir partition, bail out with error

	  (setenv "MT_TEST_NAME" hed) ;; 
	  (let*-values (((waitons waitors config) (tests:get-waitons hed all-tests-registry))
                        ((hed-mode)
                         (let ((m (config-lookup config "requirements" "mode")))
                           (if m (map string->symbol (string-split m)) '(normal))))
                        ((hed-itemized-waiton) ;; are items in hed waiting on items of waiton?
                         (not (null? (lset-intersection eq? hed-mode '(itemmatch itemwait)))))
                        ((loop-delta-time) (- (current-seconds) last-loop-top-time))
                        
                        )
            (set! last-loop-top-time (current-seconds))
            (BB> "RUNLOOPTOP | cycletime="loop-delta-time" depth="(add1 (length tal))" hed="hed)
	    (debug:print-info 8 *default-log-port* "waitons: " waitons)
	    ;; check for hed in waitons => this would be circular, remove it and issue an
	    ;; error
	    (if (or (member hed waitons)
		    (member hed waitors))
		(begin
		  (debug:print-error 0 *default-log-port* "test " hed " has listed itself as a waiton or waitor, please correct this!")

  ;; At this point the list of parent tests is expanded 
  ;; NB// Should expand items here and then insert into the run queue.
  (debug:print 5 *default-log-port* "test-records: " test-records ", flags: " (hash-table->alist flags))

  ;; Do mark-and-find clean up of db before starting runing of quue
  ;;
  ;; (rmt:find-and-mark-incomplete)
  (BB> "entered run-tests-queue")
  (let* ((run-info             (rmt:get-run-info run-id))
	(tests-info            (mt:get-tests-for-run run-id #f '() '())) ;;  qryvals: "id,testname,item_path"))
	(sorted-test-names     (tests:sort-by-priority-and-waiton test-records)) 
	(test-registry         (make-hash-table))
	(registry-mutex        (make-mutex))
	(num-retries           0)
	(max-retries           (config-lookup *configdat* "setup" "maxretries"))

		  keyvals: keyvals
		  run-info: run-info
		  ;; newtal: newtal
		  all-tests-registry: all-tests-registry
		  ;; itemmaps: itemmaps
		  ;; prereqs-not-met: (rmt:get-prereqs-not-met run-id waitons hed item-path mode: testmode itemmaps: itemmaps)
		  ;; can-run-more-tests: (runs:can-run-more-tests run-id jobgroup max-concurrent-jobs) ;; look at the test jobgroup and tot jobs running
		  ))

        (rtq-looptop-lastvisit-time (current-seconds)))

    ;; Initialize the test-registery hash with tests that already have a record
    ;; convert state to symbol and use that as the hash value
    (for-each (lambda (trec)
		(let ((id (db:test-get-id        trec))
		      (tn (db:test-get-testname  trec))
		      (ip (db:test-get-item-path trec))
		      (st (db:test-get-state     trec)))
		  (if (not (equal? st "DELETED"))
		      (hash-table-set! test-registry (db:test-make-full-name tn ip) (string->symbol st)))))
	      tests-info)
    (set! max-retries (if (and max-retries (string->number max-retries))(string->number max-retries) 100))

    (let loop ((hed         (car sorted-test-names))
	       (tal         (cdr sorted-test-names)) 
	       (reg         '()) ;; registered, put these at the head of tal 
	       (reruns      '()))
      (let ((cycletime (- (current-seconds) rtq-looptop-lastvisit-time)))
        (BB> "RTQ LOOP TOP | cycletime="cycletime"| qdepth="(add1 (length tal))" hed="hed))
      (set! rtq-looptop-lastvisit-time (current-seconds))
      (runs:incremental-print-results run-id)

      (if (not (null? reruns))(debug:print-info 4 *default-log-port* "reruns=" reruns))

      ;; Here we mark any old defunct tests as incomplete. Do this every fifteen minutes
      ;; moving this to a parallel thread and just run it once.
      ;;

(define (runs:pretty-string lst)
  (map (lambda (t)
	 (if (not (vector? t))
	     (conc t)
	     (conc (db:test-get-testname t) ":" (db:test-get-state t) "/" (db:test-get-status t))))
       lst))




(define (run:test-standalone target runname keys keyvals flags)
  (let* ((run-id ...)
         (run-info ...)
         

  )

;; parent-test is there as a placeholder for when parent-tests can be run as a setup step
;;
(define (run:test run-id run-info keyvals runname test-record flags parent-test test-registry all-tests-registry)
  ;; all-tests-registry - used to determine test path
  ;; All these vars might be referenced by the testconfig file reader
  ;; flags are a hash of k/v pairs that could become commandline switches to a standalone version
  (let* ((test-name    (tests:testqueue-get-testname   test-record))
	 (test-waitons (tests:testqueue-get-waitons    test-record))
	 (test-conf    (tests:testqueue-get-testconfig test-record))
	 (itemdat      (tests:testqueue-get-itemdat    test-record))
	 (test-path    (hash-table-ref all-tests-registry test-name)) ;; path to test definition (conc *toppath* "/tests/" test-name)) ;; could use tests:get-testconfig here ...
	 (force        (hash-table-ref/default flags "-force" #f)) ;; ignore some red flags; should be removed
	 (rerun        (hash-table-ref/default flags "-rerun" #f)) ;; used to decide to rerun if test already exists, always rerun (pretend not started) 
	 (keepgoing    (hash-table-ref/default flags "-keepgoing" #f))
	 (incomplete-timeout (string->number (or (configf:lookup *configdat* "setup" "incomplete-timeout") "x")))
	 (item-path     "")
	 (db           #f)
	 (full-test-name #f))

    ;; setting itemdat to a list if it is #f

    (if (not (hash-table-ref/default *test-meta-updated* test-name #f))
        (begin
	   (hash-table-set! *test-meta-updated* test-name #t)
           (runs:update-test_meta test-name test-conf)))
    
    ;; itemdat => ((ripeness "overripe") (temperature "cool") (season "summer"))
    (let* ((new-test-path (string-intersperse (cons test-path (map cadr itemdat)) "/"))
	   (test-id       (rmt:get-test-id run-id test-name item-path)) ;; ?? necessary?
	   (testdat       (if test-id (rmt:get-test-info-by-id run-id test-id) #f)))
      (if (not testdat)
	  (let loop ()
	    ;; ensure that the path exists before registering the test
	    ;; NOPE: Cannot! Don't know yet which disk area will be assigned....
	    ;; (system (conc "mkdir -p " new-test-path))
	    ;;
	    ;; (open-run-close tests:register-test db run-id test-name item-path)
	    ;;
	    ;; NB// for the above line. I want the test to be registered long before this routine gets called!
	    ;;
	    (if (not test-id)(set! test-id (rmt:get-test-id run-id test-name item-path)))
	    (if (not test-id)
		(begin
		  (debug:print 2 *default-log-port* "WARN: Test not pre-created? test-name=" test-name ", item-path=" item-path ", run-id=" run-id)
		  (rmt:register-test run-id test-name item-path) ;; 
		  (set! test-id (rmt:get-test-id run-id test-name item-path))))
	    (debug:print-info 4 *default-log-port* "test-id=" test-id ", run-id=" run-id ", test-name=" test-name ", item-path=\"" item-path "\"")
	    (set! testdat (rmt:get-test-info-by-id run-id test-id))
	    (if (not testdat)
		(begin
		  (debug:print-info 0 *default-log-port* "WARNING: server is overloaded, trying again in one second")
		  (thread-sleep! 1)
		  (loop)))))
      (if (not testdat) ;; should NOT happen
	  (debug:print-error 0 *default-log-port* "failed to get test record for test-id " test-id))
      (set! test-id (db:test-get-id testdat))
      (if (common:file-exists? test-path)
	  (change-directory test-path)
	  (begin
	    (debug:print-error 0 *default-log-port* "test run path not created before attempting to run the test. Perhaps you are running -remove-runs at the same time?")
	    (change-directory *toppath*)))


      (case (if force ;; (args:get-arg "-force") 
		'NOT_STARTED
		(if testdat
		    (string->symbol (test:get-state testdat))
		    'failed-to-insert))
	((failed-to-insert) ;; should never happen now
	 (debug:print-error 0 *default-log-port* "Failed to insert the record into the db"))
	((NOT_STARTED COMPLETED DELETED INCOMPLETE)
	 (let ((runflag #f))
	   (cond
	    ;; -force, run no matter what
	    (force (set! runflag #t))
	    ;; NOT_STARTED, run no matter what

			     (> numseconds time-since-last))
			 (set! skip-test (conc "Skipping due to previous test run less than " (configf:lookup test-conf "skip" "rundelay") " ago"))))))
		 
		 (if skip-test
		     (begin
		       (mt:test-set-state-status-by-id run-id test-id "COMPLETED" "SKIP" skip-test)
		       (debug:print-info 1 *default-log-port* "SKIPPING Test " full-test-name " due to " skip-test))
		     (if (not (launch-test test-id run-id run-info keyvals runname test-conf test-name test-path itemdat flags)) ;; HERE WE GO
			 (begin
			   (print "ERROR: Failed to launch the test. Exiting as soon as possible")
			   (set! *globalexitstatus* 1) ;; 
			   (process-signal (current-process-id) signal/kill))))))))
	((KILLED) 
	 (debug:print 1 *default-log-port* "NOTE: " full-test-name " is already running or was explictly killed, use -force to launch it.")
	 (hash-table-set! test-registry (db:test-make-full-name test-name test-path) 'DONOTRUN)) ;; KILLED))