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(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
;; to get the lock
;;
(define (common:simple-file-lock fname #!key (expire-time 300))
(if (common:file-exists? fname)
(if (> (- (current-seconds)(file-modification-time fname)) expire-time)
(begin
(handle-exceptions exn #f (delete-file* fname))
#f))))
(define (common:simple-file-lock-and-wait fname #!key (expire-time 300))
(let ((end-time (+ expire-time (current-seconds))))
(let loop ((got-lock (common:simple-file-lock fname expire-time: expire-time)))
(if got-lock
#t
(if (> end-time (current-seconds))
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(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
;; to get the lock
;;
(define (common:simple-file-lock fname #!key (expire-time 300))
(let ((fmod-time (handle-exceptions
ext
(current-seconds)
(file-modification-time fname))))
(if (common:file-exists? fname)
(if (> (- (current-seconds) fmod-time) expire-time)
(begin
(handle-exceptions exn #f (delete-file* fname))
(common:simple-file-lock fname expire-time: expire-time))
#f)
(let ((key-string (conc (get-host-name) "-" (current-process-id))))
(with-output-to-file fname
(lambda ()
(print key-string)))
(thread-sleep! 0.25)
(if (common:file-exists? fname)
(handle-exceptions exn
#f
(with-input-from-file fname
(lambda ()
(equal? key-string (read-line)))))
#f)))))
(define (common:simple-file-lock-and-wait fname #!key (expire-time 300))
(let ((end-time (+ expire-time (current-seconds))))
(let loop ((got-lock (common:simple-file-lock fname expire-time: expire-time)))
(if got-lock
#t
(if (> end-time (current-seconds))
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(file-read-access? fullpath))
(handle-exceptions
exn
#f
(debug:print 2 *default-log-port* "reading file " fullpath)
(let ((real-age (- (current-seconds)(file-change-time fullpath))))
(if (< real-age age)
(with-input-from-file fullpath read)
(begin
(debug:print-info 2 *default-log-port* "file " fullpath " is too old (" real-age" seconds) to trust, skipping reading it")
#f))))
(begin
(debug:print 2 *default-log-port* "not reading file " fullpath)
#f)))
#f))
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(file-read-access? fullpath))
(handle-exceptions
exn
#f
(debug:print 2 *default-log-port* "reading file " fullpath)
(let ((real-age (- (current-seconds)(file-change-time fullpath))))
(if (< real-age age)
(handle-exceptions
exn
(begin
(debug:print-info 1 *default-log-port* " removing bad file " fullpath)
(delete-file* fullpath)
#f)
(with-input-from-file fullpath read))
(begin
(debug:print-info 2 *default-log-port* "file " fullpath " is too old (" real-age" seconds) to trust, skipping reading it")
#f))))
(begin
(debug:print 2 *default-log-port* "not reading file " fullpath)
#f)))
#f))
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(define (common:wait-for-cpuload maxload-in numcpus-in waitdelay #!key (count 1000) (msg #f)(remote-host #f)(force-maxload #f)(num-tries 5))
(let* ((loadavg (common:get-cpu-load remote-host))
(numcpus (if (<= 1 numcpus-in) ;; not possible to have zero. If we get 1, it's possible that we got the previous default, and we should check again
(common:get-num-cpus remote-host)
numcpus-in))
(maxload (if force-maxload
maxload-in
(max maxload-in 0.5))) ;; so maxload must be greater than 0.5 for now BUG - FIXME?
(first (car loadavg))
(next (cadr loadavg))
(adjmaxload (* maxload (max 1 numcpus))) ;; possible bug where
;; numcpus (or could be
;; maxload) is zero,
;; crude fallback is to
;; at least use 1
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(define (common:wait-for-cpuload maxload-in numcpus-in waitdelay #!key (count 1000) (msg #f)(remote-host #f)(force-maxload #f)(num-tries 5))
(let* ((loadavg (common:get-cpu-load remote-host))
(numcpus (if (<= 1 numcpus-in) ;; not possible to have zero. If we get 1, it's possible that we got the previous default, and we should check again
(common:get-num-cpus remote-host)
numcpus-in))
(maxload (if force-maxload
maxload-in
(if (number? maxload-in)
(max maxload-in 0.5)
0.5))) ;; so maxload must be greater than 0.5 for now BUG - FIXME?
(first (car loadavg))
(next (cadr loadavg))
(adjmaxload (* maxload (max 1 numcpus))) ;; possible bug where
;; numcpus (or could be
;; maxload) is zero,
;; crude fallback is to
;; at least use 1
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