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;;
;; You should have received a copy of the GNU General Public License
;; along with Megatest. If not, see <http://www.gnu.org/licenses/>.
;;======================================================================
(declare (unit commonmod))
(module commonmod
*
(import (prefix sqlite3 sqlite3:) posix typed-records srfi-18 srfi-69
md5 message-digest
regex srfi-1)
;;======================================================================
;; CONTENTS
;;
;; config file utils
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;;
;; You should have received a copy of the GNU General Public License
;; along with Megatest. If not, see <http://www.gnu.org/licenses/>.
;;======================================================================
(declare (unit commonmod))
(use srfi-69)
(module commonmod
*
(import scheme chicken data-structures extras files)
(import (prefix sqlite3 sqlite3:)
posix typed-records srfi-18 srfi-69
md5 message-digest
regex srfi-1)
;;======================================================================
;; CONTENTS
;;
;; config file utils
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(if valstr
(val->alist valstr)
'()))) ;; should it return empty list or #f to indicate not set?
(define (get-section cfgdat section)
(hash-table-ref/default cfgdat section '()))
;;======================================================================
;; misc conversion, data manipulation functions
;;======================================================================
;; if it looks like a number -> convert it to a number, else return it
;;
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(if valstr
(val->alist valstr)
'()))) ;; should it return empty list or #f to indicate not set?
(define (get-section cfgdat section)
(hash-table-ref/default cfgdat section '()))
;; 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 (file-exists? fname) ;; (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 (file-exists? fname) ;; (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))
(begin
(thread-sleep! 3)
(loop (common:simple-file-lock fname expire-time: expire-time)))
#f)))))
(define (common:simple-file-release-lock fname)
(handle-exceptions
exn
#f ;; I don't really care why this failed (at least for now)
(delete-file* fname)))
;;======================================================================
;; misc conversion, data manipulation functions
;;======================================================================
;; if it looks like a number -> convert it to a number, else return it
;;
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