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(let ((syncprag (configf:lookup *configdat* "setup" "sychronous")))
(sqlite3:execute db (conc "PRAGMA synchronous = " (or syncprag 0) ";"))))
;; open an sql database inside a file lock
;; returns: db existed-prior-to-opening
;; RA => Returns a db handler; sets the lock if opened in writable mode
;;
(define *db-open-mutex* (make-mutex))
(define (db:lock-create-open fname initproc)
(let* ((parent-dir (or (pathname-directory fname)(current-directory))) ;; no parent? go local
(dir-writable (file-write-access? parent-dir))
(file-exists (file-exists? fname))
(file-write (if file-exists
(file-write-access? fname)
dir-writable )))
(mutex-lock! *db-open-mutex*)
(if file-write ;; dir-writable
(let (;; (lock (obtain-dot-lock fname 1 5 10))
(db (sqlite3:open-database fname)))
(sqlite3:set-busy-handler! db (make-busy-timeout 136000))
;; (db:set-sync db)
(sqlite3:execute db "PRAGMA synchronous = 0;")
(if (not file-exists)
(begin
(if (and (configf:lookup *configdat* "setup" "use-wal")
(string-match "^/tmp/.*" fname)) ;; this is a file in /tmp
(sqlite3:execute db "PRAGMA journal_mode=WAL;")
(print "Creating " fname " in NON-WAL mode."))
(initproc db)))
;; (release-dot-lock fname)
(mutex-unlock! *db-open-mutex*)
db)
(begin
(debug:print 2 *default-log-port* "WARNING: opening db in non-writable dir " fname)
(let ((db (sqlite3:open-database fname)))
(mutex-unlock! *db-open-mutex*)
db))))) ;; )
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(let ((syncprag (configf:lookup *configdat* "setup" "sychronous")))
(sqlite3:execute db (conc "PRAGMA synchronous = " (or syncprag 0) ";"))))
;; open an sql database inside a file lock
;; returns: db existed-prior-to-opening
;; RA => Returns a db handler; sets the lock if opened in writable mode
;;
;;(define *db-open-mutex* (make-mutex))
(define (db:lock-create-open fname initproc)
(let* ((parent-dir (or (pathname-directory fname)(current-directory))) ;; no parent? go local
(dir-writable (file-write-access? parent-dir))
(file-exists (file-exists? fname))
(file-write (if file-exists
(file-write-access? fname)
dir-writable )))
;;(mutex-lock! *db-open-mutex*) ;; tried this mutex, not clear it helped.
(if file-write ;; dir-writable
(let (;; (lock (obtain-dot-lock fname 1 5 10))
(db (sqlite3:open-database fname)))
(sqlite3:set-busy-handler! db (make-busy-timeout 136000))
;; (db:set-sync db)
(sqlite3:execute db "PRAGMA synchronous = 0;")
(if (not file-exists)
(begin
(if (and (configf:lookup *configdat* "setup" "use-wal")
(string-match "^/tmp/.*" fname)) ;; this is a file in /tmp
(sqlite3:execute db "PRAGMA journal_mode=WAL;")
(print "Creating " fname " in NON-WAL mode."))
(initproc db)))
;; (release-dot-lock fname)
;;(mutex-unlock! *db-open-mutex*)
db)
(begin
(debug:print 2 *default-log-port* "WARNING: opening db in non-writable dir " fname)
(let ((db (sqlite3:open-database fname)))
;;(mutex-unlock! *db-open-mutex*)
db))))) ;; )
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