Megatest

	      (tests:summarize-test run-id test-id)  ;; don't force - just update if no
	      (rmt:update-run-stats run-id (rmt:get-raw-run-stats run-id)))
	    (mutex-unlock! m)
	    (debug:print 2 "Output from running " fullrunscript ", pid " (launch:einf-pid exit-info) " in work area " 
			 work-area ":\n====\n exit code " (launch:einf-exit-code exit-info) "\n" "====\n")
	    (if (not (launch:einf-exit-status exit-info))
		(exit 4)))))))

(define (launch:cache-config)
  ;; if we have a linktree and -runtests and -target and the directory exists dump the config
  ;; to megatest-(current-seconds).cfg and symlink it to megatest.cfg
  (if (and *configdat* 
	   (or (args:get-arg "-run")
	       (args:get-arg "-runtests")
	       (args:get-arg "-execute")))
      (let* ((linktree (get-environment-variable "MT_LINKTREE"))
	     (target   (common:args-get-target))
	     (runname  (or (args:get-arg "-runname")
			   (args:get-arg ":runname")
			   (getenv "MT_RUNNAME")))
	     (fulldir  (conc linktree "/"
			     target "/"
			     runname)))
	(debug:print-info 0 "Have -runtests with target=" target ", runname=" runname ", fulldir=" fulldir ", testpatt=" (or (args:get-arg "-testpatt") "%"))
	(if (file-exists? linktree) ;; can't proceed without linktree
	    (begin
	      (if (not (file-exists? fulldir))
		  (create-directory fulldir #t)) ;; need to protect with exception handler 
	      (if (and target
		       runname
		       (file-exists? fulldir))
		  (let ((tmpfile  (conc fulldir "/.megatest.cfg." (current-seconds)))
			(targfile (conc fulldir "/.megatest.cfg-"  megatest-version "-" megatest-fossil-hash))
			(rconfig  (conc fulldir "/.runconfig." megatest-version "-" megatest-fossil-hash)))
		    (if (file-exists? rconfig) ;; only cache megatest.config AFTER runconfigs has been cached
			(begin
			  (debug:print-info 0 "Caching megatest.config in " fulldir "/.megatest.cfg")
			  (configf:write-alist *configdat* tmpfile)
			  (system (conc "ln -sf " tmpfile " " targfile))))
		    )))))))

;; set up the very basics needed for doing anything here.
;;
(define (launch:setup-old #!key (force #f))
  ;; would set values for KEYS in the environment here for better support of env-override but 
  ;; have chicken/egg scenario. need to read megatest.config then read it again. Going to 
  ;; pass on that idea for now
  ;; special case
  (if (or force (not (hash-table? *configdat*)))  ;; no need to re-open on every call
      (begin
	(set! *configinfo* (or (if (get-environment-variable "MT_CMDINFO") ;; we are inside a test - do not reprocess configs

	      (setenv "MT_RUN_AREA_HOME" *toppath*)
	      (begin
		(debug:print 0 "ERROR: failed to find the top path to your Megatest area.")
		(exit 1)))
	  )))
  *toppath*)


































;; gather available information, if legit read configs in this order:
;;
;;   if have cache;
;;      read it a return it
;;   else
;;     megatest.config     (do not cache)
;;     runconfigs.config   (cache if all vars avail)
;;     megatest.config     (cache if all vars avail)
;;   returns:
;;     *toppath*
;;   side effects:
;;     sets; *configdat*    (megatest.config info)
;;           *runconfigdat* (runconfigs.config info)
;;           *configstatus* (status of the read data)
;;
(define (launch:setup-new #!key (force #f))
  (let* ((runname  (common:args-get-runname))
	 (target   (common:args-get-target))
	 (linktree (common:get-linktree))

	 (rundir   (if (and runname target linktree)(conc linktree "/" target "/" runname) #f))
	 (mtcachef (and rundir (conc rundir "/" ".megatest.cfg-"  megatest-version "-" megatest-fossil-hash)))
	 (rccachef (and rundir (conc rundir "/" ".runconfigs.cfg-"  megatest-version "-" megatest-fossil-hash)))
	 (cancreate (and rundir (file-exists? rundir)(file-write-access? rundir))))
    (print "runname: " runname " target: " target " mtcachef: " mtcachef " rccachef: " rccachef)
    (cond
     ;; data was read and cached and available in *configstatus*
     ((eq? *configstatus* 'fulldata)
      *toppath*)
     ;; if mtcachef exists just read it
     ((and mtcachef (file-exists? mtcachef))
      (set! *configdat*    (configf:read-alist mtcachef))
      (set! *runconfigdat* (configf:read-alist rccachef))
      (set! *configinfo*   (list *configdat*  (get-environment-variable "MT_RUN_AREA_HOME")))
      (set! *configstatus* 'fulldata)
      *toppath*)
     ;; we have all the info needed to fully process runconfigs and megatest.config
     (mtcachef              
      (let ((first-pass (find-and-read-config 
				  (or (args:get-arg "-config") "megatest.config")
				  environ-patt: "env-override"
				  given-toppath: (get-environment-variable "MT_RUN_AREA_HOME")
				  pathenvvar: "MT_RUN_AREA_HOME")))
	(if first-pass
	    (begin
	      (set! *configdat*  (car first-pass))
	      (set! *configinfo* first-pass)
	      (set! *toppath*    (cadr first-pass))
	      ;; the seed read is done, now read runconfigs, cache it then read megatest.config one more time and cache it
	      (let* ((keys     (rmt:get-keys))
		     (key-vals (if target (keys:target->keyval keys target) #f))
		     (sections (if target (list "default" target) #f)) ;; for runconfigs
		     (linktree (or (getenv "MT_LINKTREE")
				   (if *configdat* (configf:lookup *configdat* "setup" "linktree") #f)))
		     (runconfigdat (begin
				     (setenv "MT_RUN_AREA_HOME" *toppath*)
				     (if key-vals
					 (for-each (lambda (kt)
						     (setenv (car kt) (cadr kt)))
						   key-vals))
				     (read-config (conc *toppath* "/runconfigs.config") #f #t sections: sections))))
		(if cancreate (configf:write-alist runconfigdat rccachef))
		(set! *runconfigdat* runconfigdat)
		(let ((second-pass (find-and-read-config 
				    (or (args:get-arg "-config") "megatest.config")
				    environ-patt: "env-override"
				    given-toppath: (get-environment-variable "MT_RUN_AREA_HOME")
				    pathenvvar: "MT_RUN_AREA_HOME")))
		  (if cancreate (configf:write-alist (car second-pass) mtcachef))
		  (set! *configdat* (car second-pass))
		  (set! *toppath*   (cadr second-pass))
		  (if cancreate (set! *configstatus* 'fulldata)))))
	    ;; no configs found? should not happen but let's try to recover gracefully, return an empty hash-table
	    (set! *configdat* (make-hash-table))
	    )))
     ;; else read what you can and set the flag accordingly
     (else
      (let* ((cfgdat   (find-and-read-config 
			(or (args:get-arg "-config") "megatest.config")
			environ-patt: "env-override"
			given-toppath: (get-environment-variable "MT_RUN_AREA_HOME")
			pathenvvar: "MT_RUN_AREA_HOME"))
	     (sections (if target (list "default" target) #f))
	     (rdat     (read-config (conc (or *toppath* (get-environment-variable "MT_RUN_AREA_HOME")(cadr cfgdat))
					  "/runconfigs.config") #f #t sections: sections)))
	(set! *configinfo*   cfgdat)
	(set! *configdat*    (car cfgdat))
	(set! *runconfigdat* rdat)
	(set! *toppath*      (cadr cfgdat))
	(set! *configstatus* 'partial))))
    ;; final house keeping
    (let* ((keys     (rmt:get-keys))
	   (key-vals (if target (keys:target->keyval keys target) #f))
	   (sections (if target (list "default" target) #f)) ;; for runconfigs
	   (linktree (or (getenv "MT_LINKTREE")
			 (if *configdat* (configf:lookup *configdat* "setup" "linktree") #f))))
      (if linktree
	  (if (not (file-exists? linktree))
	      (begin
		(handle-exceptions
		 exn
		 (begin
		   (debug:print 0 "ERROR: Something went wrong when trying to create linktree dir at " linktree)
		   (debug:print 0 " message: " ((condition-property-accessor 'exn 'message) exn))
		   (exit 1))
		 (create-directory linktree #t))))
	  (begin
	    (debug:print 0 "ERROR: linktree not defined in [setup] section of megatest.config")
	    ;; (exit 1)
	    )))
    (if (and *toppath*
	     (directory-exists? *toppath*))
	(setenv "MT_RUN_AREA_HOME" *toppath*)
	(begin
	  (debug:print 0 "ERROR: failed to find the top path to your Megatest area.")))
    *toppath*))

(define launch:setup launch:setup-new)

(define (get-best-disk confdat testconfig)
  (let* ((disks   (or (and testconfig (hash-table-ref/default testconfig "disks" #f))
		      (hash-table-ref/default confdat "disks" #f)))
	 (minspace (let ((m (configf:lookup confdat "setup" "minspace")))
		     (string->number (or m "10000")))))
    (if disks