Megatest

(define *last-num-running-tests* 0)
(define (runs:can-run-more-tests db test-record)
  (let* ((tconfig                 (tests:testqueue-get-testconfig test-record))
	 (jobgroup                (config-lookup tconfig "requirements" "jobgroup"))
	 (num-running             (db:get-count-tests-running db))
	 (num-running-in-jobgroup (db:get-count-tests-running-in-jobgroup db jobgroup))
	 (max-concurrent-jobs     (let ((mcj (config-lookup *configdat* "setup"     "max_concurrent_jobs")))
				    (if (and mcj (string->number mcj))
					(string->number mcj)
					#f)))
	 (job-group-limit         (config-lookup *configdat* "jobgroups" jobgroup)))
    (if (not (eq? *last-num-running-tests* num-running))
	(begin
	  (debug:print 2 "max-concurrent-jobs: " max-concurrent-jobs ", num-running: " num-running)
	  (set! *last-num-running-tests* num-running)))
    (if (not (eq? 0 *globalexitstatus*))
	(list #f num-running num-running-in-jobgroup max-concurrent-jobs job-group-limit)
	(let ((can-not-run-more (cond
				 ;; if max-concurrent-jobs is set and the number running is greater 
				 ;; than it than cannot run more jobs
				 ((and max-concurrent-jobs (>= num-running max-concurrent-jobs))


				  (debug:print 0 "WARNING: Max running jobs exceeded, current number running: " num-running 
					       ", max_concurrent_jobs: " max-concurrent-jobs)
				  #t)
				 ;; if job-group-limit is set and number of jobs in the group is greater
				 ;; than the limit then cannot run more jobs of this kind
				 ((and job-group-limit
				       (>= num-running-in-jobgroup job-group-limit))
				  (debug:print 1 "WARNING: number of jobs " num-running-in-jobgroup 
					       " in " jobgroup " exceeded, will not run " (tests:testqueue-get-testname test-record))
				  #t)
				 (else #f))))
	  (list (not can-not-run-more) num-running num-running-in-jobgroup max-concurrent-jobs job-group-limit)))))

;;======================================================================
;; New methodology. These routines will replace the above in time. For
;; now the code is duplicated. This stuff is initially used in the monitor
;; based code.
;;======================================================================

	    (if (member test-name waitons)
		(begin
		  (debug:print 0 "ERROR: test " test-name " has listed itself as a waiton, please correct this!")
		  (set! waiton (filter (lambda (x)(not (equal? x hed))) waitons))))

	    (cond ;; OUTER COND
	     ((not items) ;; when false the test is ok to be handed off to launch (but not before)
	      (let* ((run-limits-info         (open-run-close runs:can-run-more-tests #f test-record)) ;; look at the test jobgroup and tot jobs running
		     (have-resources          (car run-limits-info))
		     (num-running             (list-ref run-limits-info 1))
		     (num-running-in-jobgroup (list-ref run-limits-info 2))
		     (max-concurrent-jobs     (list-ref run-limits-info 3))
		     (job-group-limit         (list-ref run-limits-info 4))
		     (prereqs-not-met         (open-run-close db:get-prereqs-not-met #f run-id waitons item-path mode: testmode))
		     (fails                   (runs:calc-fails prereqs-not-met))
		     (non-completed           (runs:calc-not-completed prereqs-not-met)))
		(debug:print 8 "INFO: have-resources: " have-resources " prereqs-not-met: " 
			     (string-intersperse 
			      (map (lambda (t)
				     (if (vector? t)
					 (conc (db:test-get-state t) "/" (db:test-get-status t))
					 (conc " WARNING: t is not a vector=" t )))
				   prereqs-not-met) ", ") " fails: " fails)
		(debug:print 4 "INFO: hed=" hed)

		;; Don't know at this time if the test have been launched at some time in the past
		;; i.e. is this a re-launch?
		(debug:print 4 "INFO: run-limits-info = " run-limits-info)
		(cond ;; INNER COND #1 for a launchable test
		 ;; Check item path against item-patts
		 ((and (not (patt-list-match item-path item-patts))
		       (not (equal? item-path "")))
		  ;; else the run is stuck, temporarily or permanently
		  ;; but should check if it is due to lack of resources vs. prerequisites
		  (debug:print 1 "INFO: Skipping " (tests:testqueue-get-testname test-record) " " item-path " as it doesn't match " item-patts)
		  (thread-sleep! *global-delta*)
		  (if (not (null? tal))
		      (loop (car tal)(cdr tal) reruns)))
		 ((and (not (hash-table-ref/default test-registery (runs:make-full-test-name test-name item-path) #f))
		       (and max-concurrent-jobs (> (- max-concurrent-jobs num-running) 5)))
		  (open-run-close db:tests-register-test #f run-id test-name item-path)
		  (hash-table-set! test-registery (runs:make-full-test-name test-name item-path) #t)
		  (thread-sleep! *global-delta*)
		  (loop (car newtal)(cdr newtal) reruns))
		 ((not have-resources) ;; simply try again after waiting a second
		  (thread-sleep! (+ 1 *global-delta*))
		  (debug:print 1 "INFO: no resources to run new tests, waiting ...")

[setup]
# exectutable /path/to/megatest
max_concurrent_jobs 30
linktree /tmp/mt_links

[jobtools]
useshell yes
# ## launcher launches jobs, the job is managed on the target host
## by megatest, comment out launcher to run local
# workhosts localhost hermes