Megatest

;;       (old-exit code)))

(define getenv get-environment-variable)
(define (safe-setenv key val)
  (if (and (string? val)(string? key))
      (handle-exceptions
       exn
       (debug:print 0 *default-log-port* "ERROR: bad value for setenv, key=" key ", value=" val)
       (debug:print-error 0 *default-log-port* "bad value for setenv, key=" key ", value=" val)
       (setenv key val))
      (debug:print 0 *default-log-port* "ERROR: bad value for setenv, key=" key ", value=" val)))
      (debug:print-error 0 *default-log-port* "bad value for setenv, key=" key ", value=" val)))

(define home (getenv "HOME"))
(define user (getenv "USER"))

;; GLOBAL GLETCHES
(define *db-keys* #f)

(define (common:read-encoded-string instr)
  (handle-exceptions
   exn
   (handle-exceptions
    exn
    (begin
      (debug:print 0 *default-log-port* "ERROR: received bad encoded string \"" instr "\", message: " ((condition-property-accessor 'exn 'message) exn))
      (debug:print-error 0 *default-log-port* "received bad encoded string \"" instr "\", message: " ((condition-property-accessor 'exn 'message) exn))
      (print-call-chain (current-error-port))
      #f)
    (read (open-input-string (base64:base64-decode instr))))
   (read (open-input-string (z3:decode-buffer (base64:base64-decode instr))))))

;; dot-locking egg seems not to work, using this for now
;; if lock is older than expire-time then remove it and try again

      (thread-start! th1)
      (thread-start! th2)
      (thread-join! th1))))

(define (std-signal-handler signum)
  ;; (signal-mask! signum)
  (set! *time-to-exit* #t)
  (debug:print 0 *default-log-port* "ERROR: Received signal " signum " exiting promptly")
  (debug:print-error 0 *default-log-port* "Received signal " signum " exiting promptly")
  ;; (std-exit-procedure) ;; shouldn't need this since we are exiting and it will be called anyway
  (exit))

(set-signal-handler! signal/int  std-signal-handler)  ;; ^C
(set-signal-handler! signal/term std-signal-handler)
;; (set-signal-handler! signal/stop std-signal-handler)  ;; ^Z NO, do NOT handle ^Z!

		      #f)))
    (if valid
	(if split
	    tlist
	    target)
	(if target
	    (begin
	      (debug:print 0 *default-log-port* "ERROR: Invalid target, spaces or blanks not allowed \"" target "\", target should be: " (string-intersperse keys "/") ", have " tlist " for elements")
	      (debug:print-error 0 *default-log-port* "Invalid target, spaces or blanks not allowed \"" target "\", target should be: " (string-intersperse keys "/") ", have " tlist " for elements")
	      #f)
	    #f))))

;;======================================================================
;; M I S C   L I S T S
;;======================================================================

;; make "nice-path" available in config files and the repl
(define nice-path common:nice-path)

(define (common:read-link-f path)
  (handle-exceptions
      exn
      (begin
	(debug:print 0 *default-log-port* "ERROR: command \"/bin/readlink -f " path "\" failed.")
	(debug:print-error 0 *default-log-port* "command \"/bin/readlink -f " path "\" failed.")
	path) ;; just give up
    (with-input-from-pipe
	(conc "/bin/readlink -f " path)
      (lambda ()
	(read-line)))))

(define (get-cpu-load)

  (let* ((spacedat (common:check-db-dir-space))
	 (is-ok    (car spacedat))
	 (dbspace  (cadr spacedat))
	 (required (caddr spacedat))
	 (dbdir    (cadddr spacedat)))
    (if (not is-ok)
	(begin
	  (debug:print 0 *default-log-port* "ERROR: Insufficient space in " dbdir ", require " required ", have " dbspace  ", exiting now.")
	  (debug:print-error 0 *default-log-port* "Insufficient space in " dbdir ", require " required ", have " dbspace  ", exiting now.")
	  (exit 1)))))
  
;; paths is list of lists ((name path) ... )
;;
(define (common:get-disk-with-most-free-space disks minsize)
  (let ((best     #f)
	(bestsize 0))